/*
Copyright (C) 1996-1997 Id Software, Inc.
Copyright (C) 2016      Spike

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

/*
The aim of this particle system is to have as much as possible configurable.
Some parts still fail here, and are marked FIXME
Effects are flushed on new maps.
The engine has a few builtins.
*/

#include "quakedef.h"

#ifdef PSET_SCRIPT
#define USE_DECALS
#define Con_Printf Con_SafePrintf

#ifdef GLQUAKE
#include "glquake.h"//hack
#endif

#define frandom() (rand()*(1.0f/RAND_MAX))
#define crandom() (rand()*(2.0f/RAND_MAX)-1.0f)
#define hrandom() (rand()*(1.0f/RAND_MAX)-0.5f)
#define particle_s fparticle_s
#define particle_t fparticle_t
typedef vec_t	vec2_t[2];
#define FloatInterpolate(a, bness, b, c) ((c) = (a) + (b - a)*bness)
#define Vector2Copy(a,b) do{(b)[0]=(a)[0];(b)[1]=(a)[1];}while(0)
#define Vector2Set(r,x,y) do{(r)[0] = x; (r)[1] = y;}while(0)
#define VectorClear(a)			((a)[0]=(a)[1]=(a)[2]=0)
#define VectorInterpolate(a, bness, b, c) FloatInterpolate((a)[0], bness, (b)[0], (c)[0]),FloatInterpolate((a)[1], bness, (b)[1], (c)[1]),FloatInterpolate((a)[2], bness, (b)[2], (c)[2])
#define VectorSet(r,x,y,z) do{(r)[0] = x; (r)[1] = y;(r)[2] = z;}while(0)
#define Vector4Clear(a)			((a)[0]=(a)[1]=(a)[2]=(a)[3]=0)
#define Vector4Copy(a,b) do{(b)[0]=(a)[0];(b)[1]=(a)[1];(b)[2]=(a)[2];(b)[3]=(a)[3];}while(0)
#define Vector4Scale(in,scale,out)		((out)[0]=(in)[0]*scale,(out)[1]=(in)[1]*scale,(out)[2]=(in)[2]*scale,(out)[3]=(in)[3]*scale)
vec_t VectorNormalize2 (const vec3_t v, vec3_t out)
{
	float	length, ilength;

	length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];

	if (length)
	{
		length = sqrt (length);		// FIXME
		ilength = 1/length;
		out[0] = v[0]*ilength;
		out[1] = v[1]*ilength;
		out[2] = v[2]*ilength;
	}
	else
	{
		VectorClear (out);
	}
		
	return length;
}
void VectorVectors(const vec3_t forward, vec3_t right, vec3_t up)
{
	if (!forward[0] && !forward[1])
	{
		if (forward[2])
			right[1] = -1;
		else
			right[1] = 0;
		right[0] = right[2] = 0;
	}
	else
	{
		right[0] = forward[1];
		right[1] = -forward[0];
		right[2] = 0;
		VectorNormalize(right);
	}
	CrossProduct(right, forward, up);
}
typedef enum { BM_BLEND/*SRC_ALPHA ONE_MINUS_SRC_ALPHA*/, BM_BLENDCOLOUR/*SRC_COLOR ONE_MINUS_SRC_COLOR*/, BM_ADDA/*SRC_ALPHA ONE*/, BM_ADDC/*GL_SRC_COLOR GL_ONE*/, BM_SUBTRACT/*SRC_ALPHA ONE_MINUS_SRC_COLOR*/, BM_INVMODA/*ZERO ONE_MINUS_SRC_ALPHA*/, BM_INVMODC/*ZERO ONE_MINUS_SRC_COLOR*/, BM_PREMUL/*ONE ONE_MINUS_SRC_ALPHA*/} blendmode_t;
typedef struct trailstate_s {
	struct trailstate_s **key;  // key to check if ts has been overwriten
	struct trailstate_s *assoc; // assoc linked trail
	struct beamseg_s *lastbeam; // last beam pointer (flagged with BS_LASTSEG)
	union {
		float lastdist;			// last distance used with particle effect
		float statetime;		// time to emit effect again (used by spawntime field)
	} state1;
	union {
		float laststop;			// last stopping point for particle effect
		float emittime;			// used by r_effect emitters
	} state2;
} trailstate_t;
#define CON_WARNING "Warning: "
entity_t	*CL_EntityNum (int num);
#define BEF_LINES 1

#define Z_Malloc malloc
#define Z_Free free
#define Z_Realloc realloc

extern int PClassic_PointFile(int c, vec3_t point);
//#define FALLBACKBIAS 0x1000000

#define PART_VALID(part) ((part) >= 0 && (part) < numparticletypes)

#define P_INVALID -1
static int pe_default = P_INVALID;
static int pe_size2 = P_INVALID;
static int pe_size3 = P_INVALID;
static int pe_defaulttrail = P_INVALID;

static float psintable[256];

int PScript_RunParticleEffectState (vec3_t org, vec3_t dir, float count, int typenum, trailstate_t **tsk);
int PScript_ParticleTrail (vec3_t startpos, vec3_t end, int type, int dlkey, vec3_t axis[3], trailstate_t **tsk);
static qboolean P_LoadParticleSet(char *name, qboolean implicit);
static void R_Particles_KillAllEffects(void);

static void buildsintable(void)
{
	int i;
	for (i = 0; i < 256; i++)
		psintable[i] = sin((i*M_PI)/128);
}
#define sin(x) (psintable[(int)((x)*(128/M_PI)) & 255])
#define cos(x) (psintable[((int)((x)*(128/M_PI)) + 64) & 255])

typedef struct particle_s
{
	struct particle_s	*next;
	float		die;

// driver-usable fields
	vec3_t		org;
	vec4_t		rgba;
	float		scale;
	float		s1, t1, s2, t2;

	vec3_t		oldorg;	//to throttle traces
	vec3_t		vel;	//renderer uses for sparks
	float		angle;
	union {
		float nextemit;
		trailstate_t *trailstate;
	} state;
// drivers never touch the following fields
	float		rotationspeed;
} particle_t;

typedef struct clippeddecal_s
{
	struct clippeddecal_s	*next;
	float		die;

	int entity;		//>0 is a lerpentity, <0 is a csqc ent. 0 is world. woot.
	qmodel_t *model;	//just for paranoia

	vec3_t		vertex[3];
	vec2_t		texcoords[3];
	float		valpha[3];

	vec4_t		rgba;
} clippeddecal_t;

#define BS_LASTSEG 0x1 // no draw to next, no delete
#define BS_DEAD    0x2 // segment is dead
#define BS_NODRAW  0x4 // only used for lerp switching

typedef struct beamseg_s
{
	struct beamseg_s *next;  // next in beamseg list

	particle_t *p;
	int    flags;            // flags for beamseg
	vec3_t dir;

	float texture_s;
} beamseg_t;



typedef struct skytris_s {
	struct skytris_s *next;
	vec3_t org;
	vec3_t x;
	vec3_t y;
	float area;
	float nexttime;
	int ptype;
	struct msurface_s *face;
} skytris_t;

typedef struct skytriblock_s
{
	struct skytriblock_s *next;
	unsigned int count;
	skytris_t tris[1024];
} skytriblock_t;

//this is the required render state for each particle
//dynamic per-particle stuff isn't important. only static state.
typedef struct {
	enum {PT_NORMAL, PT_SPARK, PT_SPARKFAN, PT_TEXTUREDSPARK, PT_BEAM, PT_CDECAL, PT_UDECAL, PT_INVISIBLE} type;

	blendmode_t blendmode;
	gltexture_t *texture;
	qboolean	nearest;

	float scalefactor;
	float invscalefactor;
	float stretch;
	float minstretch;	//limits the particle's length to a multiple of its width.
	int premul;	//0: direct rgba. 1: rgb*a,a (blend). 2: rgb*a,0 (add).
} plooks_t;

//these could be deltas or absolutes depending on ramping mode.
typedef struct {
	vec3_t rgb;
	float alpha;
	float scale;
	float rotation;
} ramp_t;
#if UNSUPPORTED
typedef struct {
	char name[MAX_QPATH];
	qmodel_t *model;
	float framestart;
	float framecount;
	float framerate;
	float alpha;
	float scalemin, scalemax;
	int skin;
	int traileffect;
	unsigned int rflags;
#define RF_USEORIENTATION Q2RF_CUSTOMSKIN	//private flag
} partmodels_t;
#endif
typedef struct {
	char name[MAX_QPATH];
	float vol;
	float atten;
	float delay;
	float pitch;
	float weight;
} partsounds_t;
// TODO: merge in alpha with rgb to gain benefit of vector opts
typedef struct part_type_s {
	char name[MAX_QPATH];
	char config[MAX_QPATH];
	char texname[MAX_QPATH];

#if UNSUPPORTED
	int nummodels;
	partmodels_t *models;
#endif

	int numsounds;
	partsounds_t *sounds;

	vec3_t rgb;	//initial colour
	float alpha;
	vec3_t rgbchange;	//colour delta (per second)
	float alphachange;
	vec3_t rgbrand;		//random rgb colour to start with
	float alpharand;
	int colorindex;		//get colour from a palette
	int colorrand;		//and add up to this amount
	float rgbchangetime;//colour stops changing at this time
	vec3_t rgbrandsync;	//like rgbrand, but a single random value instead of separate (can mix)
	float scale;		//initial scale
	float scalerand;	//with up to this much extra
	float die, randdie;	//how long it lasts (plus some rand)
	float veladd, randomveladd;		//scale the incoming velocity by this much
	float orgadd, randomorgadd;		//spawn the particle this far along its velocity direction
	float spawnvel, spawnvelvert; //spawn the particle with a velocity based upon its spawn type (generally so it flies outwards)
	vec3_t orgbias;		//static 3d world-coord bias
	vec3_t velbias;
	vec3_t orgwrand;	//3d world-coord randomisation without relation to spawn mode
	vec3_t velwrand;	//3d world-coord randomisation without relation to spawn mode
	float viewspacefrac;
	float flurry;
	int surfflagmatch;	//this decal only spawns on these surfaces
	int surfflagmask;	//this decal only spawns on these surfaces

	float s1, t1, s2, t2;	//texture coords
	float texsstride;	//addition for s for each random slot.
	int randsmax;	//max times the stride can be added

	plooks_t *slooks;	//shared looks, so state switches don't apply between particles so much.
	plooks_t looks;		//

	float spawntime;	//time limit for trails
	float spawnchance;	//if < 0, particles might not spawn so many

	float rotationstartmin, rotationstartrand;
	float rotationmin, rotationrand;

	float scaledelta;
	float countextra;
	float count;
	float countrand;
	float rainfrequency;	//surface emitter multiplier

	int assoc;
	int cliptype;
	int inwater;
	float clipcount;
	int emit;
	float emittime;
	float emitrand;
	float emitstart;

	float areaspread;
	float areaspreadvert;

	float spawnparam1;
	float spawnparam2;
/*	float spawnparam3; */

	enum {
		SM_BOX, //box = even spread within the area
		SM_CIRCLE, //circle = around edge of a circle
		SM_BALL, //ball = filled sphere
		SM_SPIRAL, //spiral = spiral trail
		SM_TRACER, //tracer = tracer trail
		SM_TELEBOX, //telebox = q1-style telebox
		SM_LAVASPLASH, //lavasplash = q1-style lavasplash
		SM_UNICIRCLE, //unicircle = uniform circle
		SM_FIELD, //field = synced field (brightfield, etc)
		SM_DISTBALL, // uneven distributed ball
		SM_MESHSURFACE //distributed roughly evenly over the surface of the mesh
	} spawnmode;

	float gravity;
	vec3_t friction;
	float clipbounce;
	float stainonimpact;

	vec3_t dl_rgb;
	float dl_radius[2];
	float dl_time;
	vec4_t dl_decay;
	float dl_corona_intensity;
	float dl_corona_scale;
	vec3_t dl_scales;
	//PT_NODLSHADOW
	int dl_cubemapnum;
#if UNSUPPORTED
	vec3_t stain_rgb;
	float stain_radius;
#endif

	enum {RAMP_NONE, RAMP_DELTA, RAMP_NEAREST, RAMP_LERP} rampmode;
	int rampindexes;
	ramp_t *ramp;

	int loaded;	//0 if not loaded, 1 if automatically loaded, 2 if user loaded
	particle_t	*particles;
	clippeddecal_t *clippeddecals;
	beamseg_t *beams;
	struct part_type_s *nexttorun;

	unsigned int flags;
#define PT_VELOCITY			0x0001	// has velocity modifiers
#define PT_FRICTION			0x0002	// has friction modifiers
#define PT_CHANGESCOLOUR	0x0004
#define PT_CITRACER			0x0008	// Q1-style tracer behavior for colorindex
#define PT_INVFRAMETIME		0x0010	// apply inverse frametime to count (causes emits to be per frame)
#define PT_AVERAGETRAIL		0x0020	// average trail points from start to end, useful with t_lightning, etc
#define PT_NOSTATE			0x0040	// don't use trailstate for this emitter (careful with assoc...)
#define PT_NOSPREADFIRST	0x0080	// don't randomize org/vel for first generated particle
#define PT_NOSPREADLAST		0x0100	// don't randomize org/vel for last generated particle
#define PT_TROVERWATER		0x0200	// don't spawn if underwater
#define PT_TRUNDERWATER		0x0400	// don't spawn if overwater
#define PT_NODLSHADOW		0x0800	// dlights from this effect don't cast shadows.
#define PT_WORLDSPACERAND	0x1000	// effect has orgwrand or velwrand properties
	unsigned int fluidmask;

	unsigned int state;
#define PS_INRUNLIST 0x1 // particle type is currently in execution list
} part_type_t;

typedef struct pcfg_s
{
	struct pcfg_s *next;
	char name[1];
} pcfg_t;
static pcfg_t *loadedconfigs;

#ifndef TYPESONLY

//triangle fan sparks use these. // defined but not used
//static double sint[7] = {0.000000, 0.781832,  0.974928,  0.433884, -0.433884, -0.974928, -0.781832};
//static double cost[7] = {1.000000, 0.623490, -0.222521, -0.900969, -0.900969, -0.222521,  0.623490};

#define crand() (rand()%32767/16383.5f-1)

//static void P_ReadPointFile_f (void);

#define MAX_BEAMSEGS			(1<<11)	// default max # of beam segments
#define MAX_PARTICLES			(1<<18)	// max # of particles at one time
#define MAX_DECALS				(1<<18)	// max # of decal fragments at one time
#define MAX_TRAILSTATES			(1<<10)	// default max # of trailstates

//int		ramp1[8] = {0x6f, 0x6d, 0x6b, 0x69, 0x67, 0x65, 0x63, 0x61};
//int		ramp2[8] = {0x6f, 0x6e, 0x6d, 0x6c, 0x6b, 0x6a, 0x68, 0x66};
//int		ramp3[8] = {0x6d, 0x6b, 6,	  5,    4,    3,    2,    1};

static particle_t	*free_particles;
static particle_t	*particles;	//contains the initial list of alloced particles.
static int			r_numparticles;
static int			r_particlerecycle;

static beamseg_t	*free_beams;
static beamseg_t	*beams;
static int			r_numbeams;

static skytriblock_t *skytrimem;
static skytris_t *skytris;

static clippeddecal_t	*free_decals;
static clippeddecal_t	*decals;
static int			r_numdecals;
static int			r_decalrecycle;

static trailstate_t *trailstates;
static int			ts_cycle; // current cyclic index of trailstates
static int			r_numtrailstates;

static		qboolean r_plooksdirty;	//a particle effect was changed, reevaluate shared looks.

static void FinishParticleType(part_type_t *ptype);

static void R_ParticleDesc_Callback(struct cvar_s *var);
static cvar_t r_bouncysparks = {"r_bouncysparks", "1"};
static cvar_t r_part_rain = {"r_part_rain", "1"};
#if UNSUPPORTED
static cvar_t r_bloodstains = {"r_bloodstains", "1"};
#endif
static cvar_t r_decal_noperpendicular = {"r_decal_noperpendicular", "1"};
static cvar_t r_particledesc = {"r_particledesc", "classic"};
static cvar_t r_part_rain_quantity = {"r_part_rain_quantity", "1"};
static cvar_t r_particle_tracelimit = {"r_particle_tracelimit", "0x7fffffff"};
static cvar_t r_part_sparks = {"r_part_sparks", "1"};
static cvar_t r_part_sparks_trifan = {"r_part_sparks_trifan", "1"};
static cvar_t r_part_sparks_textured = {"r_part_sparks_textured", "1"};
static cvar_t r_part_beams = {"r_part_beams", "1"};
static cvar_t r_part_contentswitch = {"r_part_contentswitch", "1"};
static cvar_t r_part_density = {"r_part_density", "1"};
static cvar_t r_part_maxparticles = {"r_part_maxparticles", "65536"};
static cvar_t r_part_maxdecals = {"r_part_maxdecals", "8192"};
static cvar_t r_lightflicker = {"r_lightflicker", "1"};

static float particletime;

typedef struct
{
	int firstidx;
	int firstvert;
	int numidx;
	int numvert;

	gltexture_t *texture;
	blendmode_t blendmode;
	int beflags;
} scenetris_t;
#define MAX_INDICIES 0xffff
static scenetris_t *cl_stris;
static unsigned int cl_numstris;
static unsigned int cl_maxstris;
static vec3_t *cl_strisvertv;
static vec2_t *cl_strisvertt;
static vec4_t *cl_strisvertc;
static unsigned int cl_numstrisvert;
static unsigned int cl_maxstrisvert;
static unsigned short *cl_strisidx;
static unsigned int cl_numstrisidx;
static unsigned int cl_maxstrisidx;


/*
Q1BSP_RecursiveHullTrace
Optimised version of vanilla's SV_RecursiveHullCheck that avoids the excessive pointcontents calls by using the traceline itself to check for contents.
call Q1BSP_RecursiveHullCheck for a drop-in replacement of SV_RecursiveHullCheck, if desired.
*/
enum
{
	rht_solid,
	rht_empty,
	rht_impact
};
struct rhtctx_s
{
	vec3_t start, end;
	mclipnode_t	*clipnodes;
	mplane_t	*planes;
};
static int Q1BSP_RecursiveHullTrace (struct rhtctx_s *ctx, int num, float p1f, float p2f, vec3_t p1, vec3_t p2, trace_t *trace)
{
	mclipnode_t	*node;
	mplane_t	*plane;
	float		t1, t2;
	vec3_t		mid;
	int			side;
	float		midf;
	int rht;

reenter:

	if (num < 0)
	{
		/*hit a leaf*/
		if (num == CONTENTS_SOLID)
		{
			if (trace->allsolid)
				trace->startsolid = true;
			return rht_solid;
		}
		else
		{
			trace->allsolid = false;
			if (num == CONTENTS_EMPTY)
				trace->inopen = true;
			else
				trace->inwater = true;
			return rht_empty;
		}
	}

	/*its a node*/

	/*get the node info*/
	node = ctx->clipnodes + num;
	plane = ctx->planes + node->planenum;

	if (plane->type < 3)
	{
		t1 = p1[plane->type] - plane->dist;
		t2 = p2[plane->type] - plane->dist;
	}
	else
	{
		t1 = DotProduct (plane->normal, p1) - plane->dist;
		t2 = DotProduct (plane->normal, p2) - plane->dist;
	}

	/*if its completely on one side, resume on that side*/
	if (t1 >= 0 && t2 >= 0)
	{
		//return Q1BSP_RecursiveHullTrace (hull, node->children[0], p1f, p2f, p1, p2, trace);
		num = node->children[0];
		goto reenter;
	}
	if (t1 < 0 && t2 < 0)
	{
		//return Q1BSP_RecursiveHullTrace (hull, node->children[1], p1f, p2f, p1, p2, trace);
		num = node->children[1];
		goto reenter;
	}

	if (plane->type < 3)
	{
		t1 = ctx->start[plane->type] - plane->dist;
		t2 = ctx->end[plane->type] - plane->dist;
	}
	else
	{
		t1 = DotProduct (plane->normal, ctx->start) - plane->dist;
		t2 = DotProduct (plane->normal, ctx->end) - plane->dist;
	}

	side = t1 < 0;

	midf = t1 / (t1 - t2);
	if (midf < p1f) midf = p1f;
	if (midf > p2f) midf = p2f;
	VectorInterpolate(ctx->start, midf, ctx->end, mid);

	rht = Q1BSP_RecursiveHullTrace(ctx, node->children[side], p1f, midf, p1, mid, trace);
	if (rht != rht_empty && !trace->allsolid)
		return rht;
	rht = Q1BSP_RecursiveHullTrace(ctx, node->children[side^1], midf, p2f, mid, p2, trace);
	if (rht != rht_solid)
		return rht;

	if (side)
	{
		/*we impacted the back of the node, so flip the plane*/
		trace->plane.dist = -plane->dist;
		VectorScale(plane->normal, -1, trace->plane.normal);
		midf = (t1 + DIST_EPSILON) / (t1 - t2);
	}
	else
	{
		/*we impacted the front of the node*/
		trace->plane.dist = plane->dist;
		VectorCopy(plane->normal, trace->plane.normal);
		midf = (t1 - DIST_EPSILON) / (t1 - t2);
	}

	t1 = DotProduct (trace->plane.normal, ctx->start) - trace->plane.dist;
	t2 = DotProduct (trace->plane.normal, ctx->end) - trace->plane.dist;
	midf = (t1 - DIST_EPSILON) / (t1 - t2);
	if (midf < 0)
		midf = 0;
	if (midf > 1)
		midf = 1;
	trace->fraction = midf;
	VectorCopy (mid, trace->endpos);
	VectorInterpolate(ctx->start, midf, ctx->end, trace->endpos);

	return rht_impact;
}
static qboolean Q1BSP_RecursiveHullCheck (hull_t *hull, int num, float p1f, float p2f, vec3_t p1, vec3_t p2, trace_t *trace)
{	//this function is basicall meant as a drop-in replacement for fte's SV_RecursiveHullCheck. p1f and p2f must be 0+1 respectively, num must be hull->firstclipnode
	/*if (VectorEquals(p1, p2))
	{
		//points cannot cross planes, so do it faster
		switch(Q1_HullPointContents(hull, num, p1))
		{
		case CONTENTS_SOLID:
			trace->startsolid = true;
			break;
		case CONTENTS_EMPTY:
			trace->allsolid = false;
			trace->inopen = true;
			break;
		default:
			trace->allsolid = false;
			trace->inwater = true;
			break;
		}
		return true;
	}
	else*/
	{
		struct rhtctx_s ctx;
		VectorCopy(p1, ctx.start);
		VectorCopy(p2, ctx.end);
		ctx.clipnodes = hull->clipnodes;
		ctx.planes = hull->planes;
		return Q1BSP_RecursiveHullTrace(&ctx, num, p1f, p2f, p1, p2, trace) != rht_impact;
	}
}

float CL_TraceLine (vec3_t start, vec3_t end, vec3_t impact, vec3_t normal, int *entnum)
{	//FIXME: not sure what to do about startsolid.
	int i;
	trace_t	trace;
	float frac = 1;
	entity_t *ent;
	vec3_t relstart, relend;
	VectorCopy (end, impact);
	VectorSet(normal, 0, 0, 1);
	if (entnum)
		*entnum = 0;
	for (i = 0; i < cl.num_entities; i++)
	{
		ent = &cl_entities[i];
		if (!ent->model || ent->model->needload || ent->model->type != mod_brush)
			continue;

		//FIXME: deal with rotations
		VectorSubtract(start, ent->origin, relstart);
		VectorSubtract(end, ent->origin, relend);

		memset (&trace, 0, sizeof(trace));
		trace.fraction = 1;
		Q1BSP_RecursiveHullCheck(&ent->model->hulls[0], ent->model->hulls[0].firstclipnode, 0, 1, relstart, relend, &trace);
//		SV_RecursiveHullCheck (ent->model->hulls, ent->model->hulls[0].firstclipnode, 0, 1, relstart, relend, &trace);

		if (frac > trace.fraction)
		{
			frac = trace.fraction;

			//FIXME: deal with rotations.
			VectorAdd(trace.endpos, ent->origin, impact);
			VectorCopy (trace.plane.normal, normal);

			if (entnum)
				*entnum = i;
			if (frac <= 0)
				break;
		}
	}
	return frac;
}

//these are not the actual values, but they'll do
#define FTECONTENTS_EMPTY		0
#define FTECONTENTS_SOLID		1
#define FTECONTENTS_WATER		2
#define FTECONTENTS_SLIME		4
#define FTECONTENTS_LAVA		8
#define	FTECONTENTS_SKY			16
#define	FTECONTENTS_FLUID		(FTECONTENTS_WATER|FTECONTENTS_SLIME|FTECONTENTS_LAVA|FTECONTENTS_SKY)
#define	FTECONTENTS_PLAYERCLIP	0

int SV_HullPointContents (hull_t *hull, int num, vec3_t p);
static unsigned int CL_PointContentsMask (vec3_t p)
{
	static const unsigned int cont_qtof[] =
	{
		0,	//invalid
		FTECONTENTS_EMPTY,
		FTECONTENTS_SOLID,
		FTECONTENTS_WATER,
		FTECONTENTS_SLIME,
		FTECONTENTS_LAVA,
		FTECONTENTS_SKY
	};

	unsigned int		cont;

	cont = -SV_HullPointContents (&cl.worldmodel->hulls[0], 0, p);
	if (cont < sizeof(cont_qtof)/sizeof(cont_qtof[0]))
		return cont_qtof[cont];
	else
		return cont_qtof[-(CONTENTS_WATER)];	//assume water
}

static int numparticletypes;
static part_type_t *part_type;
static part_type_t *part_run_list;

static struct {
	char *oldn;
	char *newn;
} legacynames[] =
{
	{"t_rocket",	"TR_ROCKET"},
	{"t_grenade",	"TR_GRENADE"},
	{"t_gib",		"TR_BLOOD"},

	{"te_plasma",	"TE_TEI_PLASMAHIT"},
	{"te_smoke",	"TE_TEI_SMOKE"},

	{NULL}
};

static struct partalias_s
{
	struct partalias_s *next;
	const char *from;
	const char *to;
} *partaliaslist;
typedef struct associatedeffect_s
{
	struct associatedeffect_s *next;
	char mname[MAX_QPATH];
	char pname[MAX_QPATH];
	enum
	{
		AE_TRAIL,
		AE_EMIT,
		AE_REPLACE
	} type;
} associatedeffect_t;
static associatedeffect_t *associatedeffect;
static void PScript_AssociateEffect_f(void)
{
	const char *modelname = Cmd_Argv(1);
	const char *effectname = Cmd_Argv(2);
	int type = atoi(Cmd_Argv(3));
	associatedeffect_t *ae;
	if (!strcmp(Cmd_Argv(0), "r_trail"))
		type = AE_TRAIL;
	else
	{
		if (type)
			type = AE_REPLACE;
		else
			type = AE_EMIT;
	}

	if (
		strstr(modelname, "player") ||
		strstr(modelname, "eyes") ||
		strstr(modelname, "flag") ||
		strstr(modelname, "tf_stan") ||
		strstr(modelname, ".bsp") ||
		strstr(modelname, "turr"))
	{
		Con_Printf("Sorry: Not allowed to attach effects to model \"%s\"\n", modelname);
		return;
	}

	if (strlen (modelname) >= MAX_QPATH || strlen(effectname) >= MAX_QPATH)
		return;

	/*replace the old one if it exists*/
	for(ae = associatedeffect; ae; ae = ae->next)
	{
		if (!strcmp(ae->mname, modelname))
			if ((ae->type==AE_TRAIL) == (type==AE_TRAIL))
			{
				strcpy(ae->pname, effectname);
				break;
			}
	}
	if (!ae)
	{
		ae = Z_Malloc(sizeof(*ae));
		ae->type = type;
		strcpy(ae->mname, modelname);
		strcpy(ae->pname, effectname);
		ae->next = associatedeffect;
		associatedeffect = ae;
	}

	r_plooksdirty = true;
}
static void P_PartRedirect_f(void)
{
	struct partalias_s **link, *l;
	const char *from = Cmd_Argv(1);
	const char *to = Cmd_Argv(2);

	//user wants to list all
	if (!*from)
	{
		for (l = partaliaslist; l; l = l->next)
		{
			Con_Printf("%s -> %s\n", l->from, l->to);
		}
		return;
	}

	//unlink the current value
	for (link = &partaliaslist; (l=*link); link = &(*link)->next)
	{
		if (!q_strcasecmp(l->from, from))
		{
			//they didn't specify a to, so just print out this one effect without removing it.
			if (Cmd_Argc() == 2)
			{
				Con_Printf("particle %s is currently remapped to %s\n", l->from, l->to);
				return;
			}
			*link = l->next;
			Z_Free(l);
			break;
		}
	}

	//create a new entry.
	if (*to && q_strcasecmp(from, to))
	{
		l = Z_Malloc(sizeof(*l) + strlen(from) + strlen(to) + 2);
		l->from = (char*)(l + 1);
		strcpy((char*)l->from, from);
		l->to = l->from + strlen(l->from)+1;
		strcpy((char*)l->to, to);
		l->next = partaliaslist;
		partaliaslist = l;
	}

	r_plooksdirty = true;
}
void PScript_UpdateModelEffects(qmodel_t *mod)
{
	associatedeffect_t *ae;
	mod->emiteffect = P_INVALID;
	mod->traileffect = P_INVALID;
	for(ae = associatedeffect; ae; ae = ae->next)
	{
		if (!strcmp(ae->mname, mod->name))
		{
			switch(ae->type)
			{
			case AE_TRAIL:
				mod->traileffect = PScript_FindParticleType(ae->pname);
				break;
			case AE_EMIT:
				mod->emiteffect = PScript_FindParticleType(ae->pname);
				mod->flags &= ~MOD_EMITREPLACE;
				break;
			case AE_REPLACE:
				mod->emiteffect = PScript_FindParticleType(ae->pname);
				mod->flags |= MOD_EMITREPLACE;
				break;
			}
		}
	}
}

static part_type_t *P_GetParticleType(const char *config, const char *name)
{
	int i;
	part_type_t *ptype;
	part_type_t *oldlist = part_type;
	char cfgbuf[MAX_QPATH];
	char *dot = strchr(name, '.');
	if (dot && (dot - name) < MAX_QPATH-1)
	{
		config = cfgbuf;
		memcpy(cfgbuf, name, dot - name);
		cfgbuf[dot - name] = 0;
		name = dot+1;
	}

	for (i = 0; legacynames[i].oldn; i++)
	{
		if (!strcmp(name, legacynames[i].oldn))
		{
			name = legacynames[i].newn;
			break;
		}
	}
	for (i = 0; i < numparticletypes; i++)
	{
		ptype = &part_type[i];
		if (!q_strcasecmp(ptype->name, name))
			if (!q_strcasecmp(ptype->config, config))	//must be an exact match.
				return ptype;
	}
	part_type = Z_Realloc(part_type, sizeof(part_type_t)*(numparticletypes+1));
	ptype = &part_type[numparticletypes++];
	memset(ptype, 0, sizeof(*ptype));
	q_strlcpy(ptype->name, name, sizeof(ptype->name));
	q_strlcpy(ptype->config, config, sizeof(ptype->config));
	ptype->assoc = P_INVALID;
	ptype->inwater = P_INVALID;
	ptype->cliptype = P_INVALID;
	ptype->emit = P_INVALID;

	if (oldlist)
	{
		if (part_run_list)
			part_run_list = (part_type_t*)((char*)part_run_list - (char*)oldlist + (char*)part_type);

		for (i = 0; i < numparticletypes; i++)
			if (part_type[i].nexttorun)
				part_type[i].nexttorun = (part_type_t*)((char*)part_type[i].nexttorun - (char*)oldlist + (char*)part_type);
	}

	ptype->loaded = 0;
	ptype->ramp = NULL;
	ptype->particles = NULL;
	ptype->beams = NULL;

	r_plooksdirty = true;
	return ptype;
}

//unconditionally allocates a particle object. this allows out-of-order allocations.
static int P_AllocateParticleType(const char *config, const char *name)	//guarentees that the particle type exists, returning it's index.
{
	part_type_t *pt = P_GetParticleType(config, name);
	return pt - part_type;
}

static void PScript_RetintEffect(part_type_t *to, part_type_t *from, const char *colourcodes)
{
	char name[sizeof(to->name)];
	char config[sizeof(to->config)];

	q_strlcpy(name, to->name, sizeof(to->name));
	q_strlcpy(config, to->config, sizeof(to->config));

	//'to' was already purged, so we don't need to care about that.
	memcpy(to, from, sizeof(*to));

	q_strlcpy(to->name, name, sizeof(to->name));
	q_strlcpy(to->config, config, sizeof(to->config));

	//make sure 'to' has its own copy of any lists, so that we don't have issues when freeing this memory again.
#if UNSUPPORTED
	if (to->models)
	{
		to->models = Z_Malloc(to->nummodels * sizeof(*to->models));
		memcpy(to->models, from->models, to->nummodels * sizeof(*to->models));
	}
#endif
	if (to->sounds)
	{
		to->sounds = Z_Malloc(to->numsounds * sizeof(*to->sounds));
		memcpy(to->sounds, from->sounds, to->numsounds * sizeof(*to->sounds));
	}
	if (to->ramp)
	{
		to->ramp = Z_Malloc(to->rampindexes * sizeof(*to->ramp));
		memcpy(to->ramp, from->ramp, to->rampindexes * sizeof(*to->ramp));
	}

	//'from' might still have some links so we need to clear those out.
	to->nexttorun = NULL;
	to->particles = NULL;
	to->clippeddecals = NULL;
	to->beams = NULL;
	to->slooks = &to->looks;
	r_plooksdirty = true;

	to->colorindex = strtoul(colourcodes, (char**)&colourcodes, 10);
	if (*colourcodes == '_')
		colourcodes++;
	to->colorrand = strtoul(colourcodes, (char**)&colourcodes, 10);
}

//public interface. get without creating.
int PScript_FindParticleType(const char *fullname)
{
	int i;
	part_type_t *ptype = NULL;
	char cfg[MAX_QPATH];
	char *dot;
	const char *name = fullname;

	//check particle aliases, mostly for tex_sky1 -> weather.te_rain for example, or whatever
	struct partalias_s *l;
	int recurselimit = 5;
	for (l = partaliaslist; l; )
	{
		if (!q_strcasecmp(l->from, name))
		{
			name = l->to;

			if (recurselimit --> 0)
				l = partaliaslist;
			else
				return P_INVALID;
		}
		else
			l = l->next;
	}

	dot = strchr(name, '.');
	if (dot && (dot - name) < MAX_QPATH-1)
	{
		memcpy(cfg, name, dot - name);
		cfg[dot-name] = 0;
		name = dot+1;
	}
	else
		*cfg = 0;

	for (i = 0; legacynames[i].oldn; i++)
	{
		if (!strcmp(name, legacynames[i].oldn))
		{
			name = legacynames[i].newn;
			break;
		}
	}

	if (*cfg)
	{	//favour the namespace if one is specified
		for (i = 0; i < numparticletypes; i++)
		{
			if (!q_strcasecmp(part_type[i].name, name))
			{
				if (!q_strcasecmp(part_type[i].config, cfg))
				{
					ptype = &part_type[i];
					break;
				}
			}
		}
	}
	else
	{
		//but be prepared to load it from any namespace if its not got a namespace specified.
		for (i = 0; i < numparticletypes; i++)
		{
			if (!q_strcasecmp(part_type[i].name, name))
			{
				ptype = &part_type[i];
				if (ptype->loaded)	//(mostly) ignore ones that are not currently loaded
					break;
			}
		}
	}
	if (!ptype || !ptype->loaded)
	{
		if (!q_strncasecmp(name, "te_explosion2_", 14))
		{
			int from = PScript_FindParticleType(va("%s.te_explosion2", cfg));
			if (from != P_INVALID)
			{
				int to = P_AllocateParticleType(cfg, name);
				PScript_RetintEffect(&part_type[to], &part_type[from], name+14);
				return to;
			}
		}
		if (*cfg)
			if (P_LoadParticleSet(cfg, true))
				return PScript_FindParticleType(fullname);

/*		if (fallback)
		{
			if (!strncmp(name, "classic_", 8))
				i = fallback->FindParticleType(name+8);
			else
				i = fallback->FindParticleType(name);
			if (i != P_INVALID)
				return i+FALLBACKBIAS;
		}
*/
		return P_INVALID;
	}
	return i;
}

static int CheckAssosiation(const char *config, const char *name, int from)
{
	int to, orig;

	orig = to = P_AllocateParticleType(config, name);

	while(to != P_INVALID)
	{
		if (to == from)
		{
			Con_Printf("Assosiation of %s would cause infinate loop\n", name);
			return P_INVALID;
		}
		to = part_type[to].assoc;
	}
	return orig;
}

static void P_LoadTexture(part_type_t *ptype, qboolean warn)
{
#if UNSUPPORTED
	for (i = 0; i < ptype->nummodels; i++)
		ptype->models[i].model = NULL;
#endif

	if (*ptype->texname)
	{
		byte *data = NULL;
		char filename[MAX_QPATH];
		int fwidth=0, fheight=0;
		int hunkmark;
		char *texname = va("%s%s%s", ptype->texname, ptype->looks.premul?"_premul":"", ptype->looks.nearest?"_nearest":"");
		
		ptype->looks.texture = TexMgr_FindTexture(NULL, texname);
		if (!ptype->looks.texture)
		{
			hunkmark = Hunk_LowMark();
			if (!data)
			{
				q_snprintf (filename, sizeof(filename), "textures/%s", ptype->texname);
				data = Image_LoadImage (filename, &fwidth, &fheight);
			}
			if (!data)
			{
				q_snprintf (filename, sizeof(filename), "%s", ptype->texname);
				data = Image_LoadImage (filename, &fwidth, &fheight);
			}

			if (data)
			{
				ptype->looks.texture = TexMgr_LoadImage(NULL, texname, fwidth, fheight, SRC_RGBA, data, filename, 0, (ptype->looks.premul?TEXPREF_PREMULTIPLY:0)|(ptype->looks.nearest?TEXPREF_NEAREST:TEXPREF_LINEAR)|TEXPREF_NOPICMIP|TEXPREF_ALPHA);
			}
			Hunk_FreeToLowMark(hunkmark);
		}
	}
	else
		ptype->looks.texture = 0;

	if (!ptype->looks.texture)
	{
		//the specified texture isn't valid. make something up based upon the particle's type
		ptype->s1 = 0;
		ptype->t1 = 0;
		ptype->s2 = 1;
		ptype->t2 = 1;
		ptype->randsmax = 1;

#define PARTICLETEXTURESIZE 64
		if (ptype->looks.type == PT_SPARK)
		{
			static gltexture_t *thetex;
			if (!thetex)
			{
				static byte data[4*4*4];
				memset(data, 0xff, sizeof(data));
				thetex = TexMgr_LoadImage(NULL, "particles/white", 4, 4, SRC_RGBA, data, "", (src_offset_t)data, TEXPREF_PERSIST|TEXPREF_NOPICMIP|TEXPREF_LINEAR|TEXPREF_ALPHA);
			}
			ptype->looks.texture = thetex;
		}
		else if (ptype->looks.type == PT_BEAM) //untextured beams get a single continuous blob
		{
			static gltexture_t *thetex;
			if (!thetex)
			{
				int y, x;
				float dy, d;
				static byte data[PARTICLETEXTURESIZE*PARTICLETEXTURESIZE*4];
				memset(data, 0xff, sizeof(data));
				for (y = 0;y < PARTICLETEXTURESIZE;y++)
				{
					dy = (y - 0.5f*PARTICLETEXTURESIZE) / (PARTICLETEXTURESIZE*0.5f-1);
					d = 256 * (1 - (dy*dy));
					if (d < 0) d = 0;
					for (x = 0;x < PARTICLETEXTURESIZE;x++)
					{
						data[(y*PARTICLETEXTURESIZE+x)*4+3] = (byte) d;
					}
				}
				thetex = TexMgr_LoadImage(NULL, "particles/beamtexture", PARTICLETEXTURESIZE, PARTICLETEXTURESIZE, SRC_RGBA, data, "", (src_offset_t)data, TEXPREF_PERSIST|TEXPREF_NOPICMIP|TEXPREF_LINEAR|TEXPREF_ALPHA);
			}
			ptype->looks.texture = thetex;
		}
		else if (ptype->looks.type == PT_SPARKFAN) 	//untextured beams get a single continuous blob
		{
			static gltexture_t *thetex;
			if (!thetex)
			{
				int y, x;
				float dy, dx, d;
				static byte data[PARTICLETEXTURESIZE*PARTICLETEXTURESIZE*4];
				for (y = 0;y < PARTICLETEXTURESIZE;y++)
				{
					dy = y / (PARTICLETEXTURESIZE*0.5f-1);
					for (x = 0;x < PARTICLETEXTURESIZE;x++)
					{
						dx = x / (PARTICLETEXTURESIZE*0.5f-1);
						d = 256 * (1 - (dx+dy));
						if (d < 0) d = 0;
						data[(y*PARTICLETEXTURESIZE+x)*4+0] = (byte) d;
						data[(y*PARTICLETEXTURESIZE+x)*4+1] = (byte) d;
						data[(y*PARTICLETEXTURESIZE+x)*4+2] = (byte) d;
						data[(y*PARTICLETEXTURESIZE+x)*4+3] = (byte) d/2;
					}
				}
				thetex = TexMgr_LoadImage(NULL, "particles/ptritexture", PARTICLETEXTURESIZE, PARTICLETEXTURESIZE, SRC_RGBA, data, "", (src_offset_t)data, TEXPREF_PERSIST|TEXPREF_NOPICMIP|TEXPREF_LINEAR|TEXPREF_ALPHA);
			}
			ptype->looks.texture = thetex;
		}
		else if (strstr(ptype->texname, "glow") || strstr(ptype->texname, "ball") || ptype->looks.type == PT_TEXTUREDSPARK) //sparks and special names get a nice circular texture.
		{
			static gltexture_t *thetex;
			if (!thetex)
			{
				int y, x;
				float dy, dx, d;
				static byte data[PARTICLETEXTURESIZE*PARTICLETEXTURESIZE*4];
				memset(data, 0xff, sizeof(data));
				for (y = 0;y < PARTICLETEXTURESIZE;y++)
				{
					dy = (y - 0.5f*PARTICLETEXTURESIZE) / (PARTICLETEXTURESIZE*0.5f-1);
					for (x = 0;x < PARTICLETEXTURESIZE;x++)
					{
						dx = (x - 0.5f*PARTICLETEXTURESIZE) / (PARTICLETEXTURESIZE*0.5f-1);
						d = 256 * (1 - (dx*dx+dy*dy));
						if (d < 0) d = 0;
						data[(y*PARTICLETEXTURESIZE+x)*4+3] = (byte) d;
					}
				}
				thetex = TexMgr_LoadImage(NULL, "particles/balltexture", PARTICLETEXTURESIZE, PARTICLETEXTURESIZE, SRC_RGBA, data, "", (src_offset_t)data, TEXPREF_PERSIST|TEXPREF_NOPICMIP|TEXPREF_LINEAR|TEXPREF_ALPHA);
			}
			ptype->looks.texture = thetex;
		}
		else //anything else gets a fuzzy texture
		{
			static gltexture_t *thetex;
			if (!thetex)
			{
				int y, x;
				static byte	exptexture[16][16] =
				{
					{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
					{0,0,0,0,1,0,0,0,1,0,0,1,0,0,0,0},
					{0,0,0,1,1,1,1,1,3,1,1,2,1,0,0,0},
					{0,0,0,1,1,1,1,4,4,4,5,4,2,1,1,0},
					{0,0,1,1,6,5,5,8,6,8,3,6,3,2,1,0},
					{0,0,1,5,6,7,5,6,8,8,8,3,3,1,0,0},
					{0,0,0,1,6,8,9,9,9,9,4,6,3,1,0,0},
					{0,0,2,1,7,7,9,9,9,9,5,3,1,0,0,0},
					{0,0,2,4,6,8,9,9,9,9,8,6,1,0,0,0},
					{0,0,2,2,3,5,6,8,9,8,8,4,4,1,0,0},
					{0,0,1,2,4,1,8,7,8,8,6,5,4,1,0,0},
					{0,1,1,1,7,8,1,6,7,5,4,7,1,0,0,0},
					{0,1,2,1,1,5,1,3,4,3,1,1,0,0,0,0},
					{0,0,0,0,0,1,1,1,1,1,0,0,0,0,0,0},
					{0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0},
					{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
				};
				static byte data[16*16*4];
				for (x=0 ; x<16 ; x++)
				{
					for (y=0 ; y<16 ; y++)
					{
						data[(y*16+x)*4+0] = 255;
						data[(y*16+x)*4+1] = 255;
						data[(y*16+x)*4+2] = 255;
						data[(y*16+x)*4+3] = exptexture[x][y]*255/9.0;
					}
				}
				thetex = TexMgr_LoadImage(NULL, "particles/fuzzyparticle", 16, 16, SRC_RGBA, data, "", (src_offset_t)data, TEXPREF_PERSIST|TEXPREF_NOPICMIP|TEXPREF_LINEAR|TEXPREF_ALPHA);
			}
			ptype->looks.texture = thetex;
		}
	}
}

static void P_ResetToDefaults(part_type_t *ptype)
{
	particle_t *parts;
	part_type_t *torun;
	char tnamebuf[sizeof(ptype->name)];
	char tconfbuf[sizeof(ptype->config)];

	// go with a lazy clear of list.. mark everything as DEAD and let
	// the beam rendering handle removing nodes
	beamseg_t *beamsegs = ptype->beams;
	while (beamsegs)
	{
		beamsegs->flags |= BS_DEAD;
		beamsegs = beamsegs->next;
	}

	// forget any particles before its wiped
	while (ptype->particles)
	{
		parts = ptype->particles->next;
		ptype->particles->next = free_particles;
		free_particles = ptype->particles;
		ptype->particles = parts;
	}

	// if we're in the runstate loop through and remove from linked list
	if (ptype->state & PS_INRUNLIST)
	{
		if (part_run_list == ptype)
			part_run_list = part_run_list->nexttorun;
		else
		{
			for (torun = part_run_list; torun != NULL; torun = torun->nexttorun)
			{
				if (torun->nexttorun == ptype)
					torun->nexttorun = torun->nexttorun->nexttorun;
			}
		}
	}

	//some things need to be preserved before we clear everything.
	beamsegs = ptype->beams;
	strcpy(tnamebuf, ptype->name);
	strcpy(tconfbuf, ptype->config);

	//free uneeded info
	if (ptype->ramp)
		Z_Free(ptype->ramp);
#if UNSUPPORTED
	if (ptype->models)
		Z_Free(ptype->models);
#endif
	if (ptype->sounds)
		Z_Free(ptype->sounds);

	//reset everything we're too lazy to specifically set
	memset(ptype, 0, sizeof(*ptype));

	//now set any non-0 defaults.

	ptype->beams = beamsegs;
	ptype->rainfrequency = 1;
	strcpy(ptype->name, tnamebuf);
	strcpy(ptype->config, tconfbuf);
	ptype->assoc=P_INVALID;
	ptype->inwater = P_INVALID;
	ptype->cliptype = P_INVALID;
	ptype->emit = P_INVALID;
	ptype->fluidmask = FTECONTENTS_FLUID;
	ptype->alpha = 1;
	ptype->alphachange = 1;
	ptype->clipbounce = 0.8;
	ptype->clipcount = 1;
	ptype->colorindex = -1;
	ptype->rotationstartmin = -M_PI;	//start with a random angle
	ptype->rotationstartrand = M_PI-ptype->rotationstartmin;
	ptype->spawnchance = 1;
	ptype->dl_time = 0;
	VectorSet(ptype->dl_rgb, 1, 1, 1);
	ptype->dl_corona_intensity = 0.25;
	ptype->dl_corona_scale = 0.5;
	VectorSet(ptype->dl_scales, 0, 1, 1);
	ptype->looks.stretch = 0.05;

	ptype->randsmax = 1;
	ptype->s2 = 1;
	ptype->t2 = 1;
}


//This is the function that loads the effect descriptions.
void PScript_ParseParticleEffectFile(const char *config, qboolean part_parseweak, FILE *context)
{
	const char *var, *value;
	char *buf;
	qboolean settype;
	qboolean setalphadelta;
	qboolean setbeamlen;

	part_type_t *ptype;
	int pnum, assoc;
	char line[512];
	char part_parsenamespace[MAX_QPATH];

	byte *palrgba = (byte *)d_8to24table; 

	q_strlcpy(part_parsenamespace, config, sizeof(part_parsenamespace));
	config = part_parsenamespace;

nexteffect:

	if (!fgets(line, sizeof(line), context))
		return;	//eof
reparse:

	Cmd_TokenizeString(line);

	var = Cmd_Argv(0);


	if (!strcmp(var, "r_effect") || !strcmp(var, "r_trail"))
	{	//add an emit/trail effect to all ents using said model
		PScript_AssociateEffect_f();
		goto nexteffect;
	}
	else if (!strcmp(var, "r_partredirect"))
	{	//add an emit/trail effect to all ents using said model
		P_PartRedirect_f();
		goto nexteffect;
	}
	else if (strcmp(var, "r_part"))
	{
		if (*var)
			Con_SafePrintf("Unknown particle command \"%s\"\n", var);
		goto nexteffect;
	}

	settype = false;
	setalphadelta = false;
	setbeamlen = false;

	if (Cmd_Argc()!=2)
	{
		if (!strcmp(Cmd_Argv(1), "namespace"))
		{
			q_strlcpy(part_parsenamespace, Cmd_Argv(2), sizeof(part_parsenamespace));
			if (Cmd_Argc() >= 4)
				part_parseweak = atoi(Cmd_Argv(3));
			goto nexteffect;
		}
		Con_Printf("No name for particle effect\n");
		goto nexteffect;
	}

	buf = fgets(line, sizeof(line), context);
	if (!buf)
		return;	//eof
	while (*buf && *buf <= ' ')
		buf++;	//no whitespace please.
	if (*buf != '{')
	{
		Con_Printf("This is a multiline command and should be used within config files\n");
		goto reparse;
	}

	var = Cmd_Argv(1);
	if (*var == '+')
		ptype = P_GetParticleType(config, var+1);
	else
		ptype = P_GetParticleType(config, var);

	//'weak' configs do not replace 'strong' configs
	//we allow weak to replace weak as a solution to the +assoc chain thing (to add, we effectively need to 'replace').
	if ((part_parseweak && ptype->loaded==2))
	{
		int depth = 1;
		while(1)
		{
			buf = fgets(line, sizeof(line), context);
			if (!buf)
				return;

			while (*buf && *buf <= ' ')
				buf++;	//no whitespace please.
			if (*buf == '{')
				depth++;
			else if (*buf == '}')
			{
				if (--depth == 0)
					break;
			}
		}
		goto nexteffect;
	}

	if (*var == '+')
	{
		if (ptype->loaded)
		{
			int i, parenttype;
			char newname[256];
			for (i = 0; i < 64; i++)
			{
				parenttype = ptype - part_type;
				q_snprintf(newname, sizeof(newname), "+%i%s", i, ptype->name);
				ptype = P_GetParticleType(config, newname);
				if (!ptype->loaded)
				{
					if (part_type[parenttype].assoc != P_INVALID)
						Con_Printf("warning: assoc on particle chain %s overridden\n", var+1);
					part_type[parenttype].assoc = ptype - part_type;
					break;
				}
			}
			if (i == 64)
			{
				Con_Printf("Too many duplicate names, gave up\n");
				return;
			}
		}
	}
	else
	{
		if (ptype->loaded)
		{
			assoc = ptype->assoc;
			while (assoc != P_INVALID && assoc < numparticletypes)
			{
				if (*part_type[assoc].name == '+')
				{
					part_type[assoc].loaded = false;
					assoc = part_type[assoc].assoc;
				}
				else
					break;
			}
		}
	}
	if (!ptype)
	{
		Con_Printf("Bad name\n");
		return;
	}

	pnum = ptype-part_type;

	P_ResetToDefaults(ptype);

	while(1)
	{
		buf = fgets(line, sizeof(line), context);
		if (!buf)
		{
			Con_Printf("Unexpected end of buffer with effect %s\n", ptype->name);
			return;
		}

		while (*buf && *buf <= ' ')
			buf++;	//no whitespace please.
		if (*buf == '}')
			break;

		Cmd_TokenizeString(buf);
		var = Cmd_Argv(0);
		value = Cmd_Argv(1);

		// TODO: switch this mess to some sort of binary tree to increase parse speed
#if UNSUPPORTED
		if (!strcmp(var, "if"))
		{
			//cheesy way to handle if statements inside particle configs.
			Cmd_if_f();
		}
		else
#endif
#if UNSUPPORTED
			if (!strcmp(var, "shader"))
		{
			q_strlcpy(ptype->texname, ptype->name, sizeof(ptype->texname));
			buf = Cbuf_GetNext(Cmd_ExecLevel, true);
			while (*buf && *buf <= ' ')
				buf++;	//no leading whitespace please.
			if (*buf == '{')
			{
				int nest = 1;
				char *str = Z_Malloc(3);
				int slen = 2;
				str[0] = '{';
				str[1] = '\n';
				str[2] = 0;
				while(nest)
				{
					buf = Cbuf_GetNext(Cmd_ExecLevel, true);
					if (!*buf)
					{
						Con_Printf("Unexpected end of buffer with effect %s\n", ptype->name);
						break;
					}
					while (*buf && *buf <= ' ')
						buf++;	//no leading whitespace please.
					if (*buf == '}')
						--nest;
					if (*buf == '{')
						nest++;
					str = Z_Realloc(str, slen + strlen(buf) + 2);
					strcpy(str + slen, buf);
					slen += strlen(str + slen);
					str[slen++] = '\n';
				}
				str[slen] = 0;
				R_RegisterShader(ptype->texname, SUF_NONE, str);
				Z_Free(str);
			}
			else
				Cbuf_InsertText(buf, Cmd_ExecLevel, true);
		}
		else
#endif
			if (!strcmp(var, "texture") || !strcmp(var, "linear_texture") || !strcmp(var, "nearest_texture") || !strcmp(var, "nearesttexture"))
		{
			q_strlcpy(ptype->texname, value, sizeof(ptype->texname));
			ptype->looks.nearest = !strncmp(var, "nearest", 7);
		}
		else if (!strcmp(var, "tcoords"))
		{
			float tscale;

			tscale = atof(Cmd_Argv(5));
			if (tscale <= 0)
				tscale = 1;

			ptype->s1 = atof(value)/tscale;
			ptype->t1 = atof(Cmd_Argv(2))/tscale;
			ptype->s2 = atof(Cmd_Argv(3))/tscale;
			ptype->t2 = atof(Cmd_Argv(4))/tscale;

			ptype->randsmax = atoi(Cmd_Argv(6));
			ptype->texsstride = atof(Cmd_Argv(7));

			if (ptype->randsmax < 1 || ptype->texsstride == 0)
				ptype->randsmax = 1;
		}
		else if (!strcmp(var, "atlas"))
		{	//atlas countineachaxis first [last]
			int dims;
			int i;
			int m;

			dims = atof(Cmd_Argv(1));
			i = atoi(Cmd_Argv(2));
			m = atoi(Cmd_Argv(3));
			if (dims < 1)
				dims = 1;

			if (m > (m/dims)*dims+dims-1)
			{
				m = (m/dims)*dims+dims-1;
				Con_Printf("effect %s wraps across an atlased line\n", ptype->name);
			}
			if (m < i)
				m = i;

			ptype->s1 = 1.0/dims * (i%dims);
			ptype->s2 = 1.0/dims * (1+(i%dims));
			ptype->t1 = 1.0/dims * (i/dims);
			ptype->t2 = 1.0/dims * (1+(i/dims));

			ptype->randsmax = m-i;
			ptype->texsstride = ptype->s2-ptype->s1;

			//its modulo
			ptype->randsmax++;
		}
		else if (!strcmp(var, "rotation"))
		{
			ptype->rotationstartmin = atof(value)*M_PI/180;
			if (Cmd_Argc()>2)
				ptype->rotationstartrand = atof(Cmd_Argv(2))*M_PI/180-ptype->rotationstartmin;
			else
				ptype->rotationstartrand = 0;

			ptype->rotationmin = atof(Cmd_Argv(3))*M_PI/180;
			if (Cmd_Argc()>4)
				ptype->rotationrand = atof(Cmd_Argv(4))*M_PI/180-ptype->rotationmin;
			else
				ptype->rotationrand = 0;
		}
		else if (!strcmp(var, "rotationstart"))
		{
			ptype->rotationstartmin = atof(value)*M_PI/180;
			if (Cmd_Argc()>2)
				ptype->rotationstartrand = atof(Cmd_Argv(2))*M_PI/180-ptype->rotationstartmin;
			else
				ptype->rotationstartrand = 0;
		}
		else if (!strcmp(var, "rotationspeed"))
		{
			ptype->rotationmin = atof(value)*M_PI/180;
			if (Cmd_Argc()>2)
				ptype->rotationrand = atof(Cmd_Argv(2))*M_PI/180-ptype->rotationmin;
			else
				ptype->rotationrand = 0;
		}
		else if (!strcmp(var, "beamtexstep"))
		{
			ptype->rotationstartmin = 1/atof(value);
			ptype->rotationstartrand = 0;
			setbeamlen = true;
		}
		else if (!strcmp(var, "beamtexspeed"))
		{
			ptype->rotationmin = atof(value);
		}
		else if (!strcmp(var, "scale"))
		{
			ptype->scale = atof(value);
			if (Cmd_Argc()>2)
				ptype->scalerand = atof(Cmd_Argv(2)) - ptype->scale;
		}
		else if (!strcmp(var, "scalerand"))
			ptype->scalerand = atof(value);

		else if (!strcmp(var, "scalefactor"))
			ptype->looks.scalefactor = atof(value);
		else if (!strcmp(var, "scaledelta"))
			ptype->scaledelta = atof(value);
		else if (!strcmp(var, "stretchfactor"))	//affects sparks
		{
			ptype->looks.stretch = atof(value);
			ptype->looks.minstretch = (Cmd_Argc()>2)?atof(Cmd_Argv(2)):0;
		}

		else if (!strcmp(var, "step"))
		{
			ptype->count = 1/atof(value);
			if (Cmd_Argc()>2)
				ptype->countrand = 1/atof(Cmd_Argv(2));
		}
		else if (!strcmp(var, "count"))
		{
			ptype->count = atof(value);
			if (Cmd_Argc()>2)
				ptype->countrand = atof(Cmd_Argv(2));
			if (Cmd_Argc()>3)
				ptype->countextra = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "rainfrequency"))
		{	//multiplier to ramp up the effect or whatever (without affecting spawn patterns).
			ptype->rainfrequency = atof(value);
		}

		else if (!strcmp(var, "alpha"))
			ptype->alpha = atof(value);
		else if (!strcmp(var, "alpharand"))
			ptype->alpharand = atof(value);
#ifndef NOLEGACY
		else if (!strcmp(var, "alphachange"))
		{
			Con_DPrintf("%s.%s: alphachange is deprecated, use alphadelta\n", ptype->config, ptype->name);
			ptype->alphachange = atof(value);
		}
#endif
		else if (!strcmp(var, "alphadelta"))
		{
			ptype->alphachange = atof(value);
			setalphadelta = true;
		}
		else if (!strcmp(var, "die"))
		{
			ptype->die = atof(value);
			if (Cmd_Argc()>2)
			{
				float mn=ptype->die,mx=atof(Cmd_Argv(2));
				if (mn > mx)
				{
					mn = mx;
					mx = ptype->die;
				}
				ptype->die = mx;
				ptype->randdie = mx-mn;
			}
		}
#ifndef NOLEGACY
		else if (!strcmp(var, "diesubrand"))
		{
			Con_DPrintf("%s.%s: diesubrand is deprecated, use die with two arguments\n", ptype->config, ptype->name);
			ptype->randdie = atof(value);
		}
#endif

		else if (!strcmp(var, "randomvel"))
		{
			ptype->velbias[0] = ptype->velbias[1] = 0;
			ptype->velwrand[0] = ptype->velwrand[1] = atof(value);
			if (Cmd_Argc()>3)
			{
				ptype->velbias[2] = atof(Cmd_Argv(2));
				ptype->velwrand[2] = atof(Cmd_Argv(3));
				ptype->velwrand[2] -= ptype->velbias[2]; /*make vert be the total range*/
				ptype->velwrand[2] /= 2; /*vert is actually +/- 1, not 0 to 1, so rescale it*/
				ptype->velbias[2] += ptype->velwrand[2]; /*and bias must be centered to the range*/
			}
			else if (Cmd_Argc()>2)
			{
				ptype->velwrand[2] = atof(Cmd_Argv(2));
				ptype->velbias[2] = 0;
			}
			else
			{
				ptype->velwrand[2] = ptype->velwrand[0];
				ptype->velbias[2] = 0;
			}
		}
		else if (!strcmp(var, "veladd"))
		{
			ptype->veladd = atof(value);
			ptype->randomveladd = 0;
			if (Cmd_Argc()>2)
				ptype->randomveladd = atof(Cmd_Argv(2)) - ptype->veladd;
		}
		else if (!strcmp(var, "orgadd"))
		{
			ptype->orgadd = atof(value);
			ptype->randomorgadd = 0;
			if (Cmd_Argc()>2)
				ptype->randomorgadd = atof(Cmd_Argv(2)) - ptype->orgadd;
		}

		else if (!strcmp(var, "orgbias"))
		{
			ptype->orgbias[0] = atof(value);
			ptype->orgbias[1] = atof(Cmd_Argv(2));
			ptype->orgbias[2] = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "velbias"))
		{
			ptype->velbias[0] = atof(value);
			ptype->velbias[1] = atof(Cmd_Argv(2));
			ptype->velbias[2] = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "orgwrand"))
		{
			ptype->orgwrand[0] = atof(value);
			ptype->orgwrand[1] = atof(Cmd_Argv(2));
			ptype->orgwrand[2] = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "velwrand"))
		{
			ptype->velwrand[0] = atof(value);
			ptype->velwrand[1] = atof(Cmd_Argv(2));
			ptype->velwrand[2] = atof(Cmd_Argv(3));
		}

		else if (!strcmp(var, "friction"))
		{
			ptype->friction[2] = ptype->friction[1] = ptype->friction[0] = atof(value);

			if (Cmd_Argc()>3)
			{
				ptype->friction[2] = atof(Cmd_Argv(3));
				ptype->friction[1] = atof(Cmd_Argv(2));
			}
			else if (Cmd_Argc()>2)
			{
				ptype->friction[2] = atof(Cmd_Argv(2));
			}
		}
		else if (!strcmp(var, "gravity"))
			ptype->gravity = atof(value);
		else if (!strcmp(var, "flurry"))
			ptype->flurry = atof(value);

		else if (!strcmp(var, "assoc"))
		{
			assoc = CheckAssosiation(config, value, pnum);	//careful - this can realloc all the particle types
			ptype = &part_type[pnum];
			ptype->assoc = assoc;
		}
		else if (!strcmp(var, "inwater"))
		{
			// the underwater effect switch should only occur for
			// 1 level so the standard assoc check works
			assoc = CheckAssosiation(config, value, pnum);
			ptype = &part_type[pnum];
			ptype->inwater = assoc;
		}
		else if (!strcmp(var, "underwater"))
		{
			ptype->flags |= PT_TRUNDERWATER;

parsefluid:
			if ((ptype->flags & (PT_TRUNDERWATER|PT_TROVERWATER)) == (PT_TRUNDERWATER|PT_TROVERWATER))
			{
				ptype->flags &= ~PT_TRUNDERWATER;
				Con_Printf("%s.%s: both over and under water\n", ptype->config, ptype->name);
			}
			if (Cmd_Argc() == 1)
				ptype->fluidmask = FTECONTENTS_FLUID;
			else
			{
				int i = Cmd_Argc();
				ptype->fluidmask = 0;
				while (i --> 1)
				{
					const char *value = Cmd_Argv(i);
					if (!strcmp(value, "water"))
						ptype->fluidmask |= FTECONTENTS_WATER;
					else if (!strcmp(value, "slime"))
						ptype->fluidmask |= FTECONTENTS_SLIME;
					else if (!strcmp(value, "lava"))
						ptype->fluidmask |= FTECONTENTS_LAVA;
					else if (!strcmp(value, "sky"))
						ptype->fluidmask |= FTECONTENTS_SKY;
					else if (!strcmp(value, "fluid"))
						ptype->fluidmask |= FTECONTENTS_FLUID;
					else if (!strcmp(value, "solid"))
						ptype->fluidmask |= FTECONTENTS_SOLID;
					else if (!strcmp(value, "playerclip"))
						ptype->fluidmask |= FTECONTENTS_PLAYERCLIP;
					else if (!strcmp(value, "none"))
						ptype->fluidmask |= 0;
					else
						Con_Printf("%s.%s: unknown contents: %s\n", ptype->config, ptype->name, value);
				}
			}
		}
		else if (!strcmp(var, "notunderwater"))
		{
			ptype->flags |= PT_TROVERWATER;
			goto parsefluid;
		}
#if UNSUPPORTED
		else if (!strcmp(var, "model"))
		{
			partmodels_t *mod;
			char *e;

			ptype->models = Z_Realloc(ptype->models, sizeof(partmodels_t)*(ptype->nummodels+1));
			q_strlcpy(ptype->models[ptype->nummodels].name, Cmd_Argv(1), sizeof(ptype->models[ptype->nummodels].name));
			mod = &ptype->models[ptype->nummodels++];

			mod->framestart = 0;
			mod->framecount = 1;
			mod->framerate = 10;
			mod->alpha = 1;
			mod->skin = 0;
			mod->traileffect = P_INVALID;
			mod->rflags = RF_NOSHADOW;
			mod->scalemin = mod->scalemax = 1;

			strtoul(Cmd_Argv(2), &e, 0);
			while(*e == ' ' || *e == '\t')
				e++;
			if (*e)
			{
				int p;
				for(p = 2; p < Cmd_Argc(); p++)
				{
					e = Cmd_Argv(p);

					if (!q_strncasecmp(e, "frame=", 6))
					{
						mod->framestart = atof(e+6);
						mod->framecount = 1;
					}
					else if (!q_strncasecmp(e, "framestart=", 11))
						mod->framestart = atof(e+11);
					else if (!q_strncasecmp(e, "framecount=", 11))
						mod->framecount = atof(e+11);
					else if (!q_strncasecmp(e, "frameend=", 9))	//misnomer.
						mod->framecount = atof(e+9);
					else if (!q_strncasecmp(e, "frames=", 7))
						mod->framecount = atof(e+7);
					else if (!q_strncasecmp(e, "framerate=", 10))
						mod->framerate = atof(e+10);
					else if (!q_strncasecmp(e, "skin=", 5))
						mod->skin = atoi(e+5);
					else if (!q_strncasecmp(e, "alpha=", 6))
						mod->alpha = atof(e+6);
					else if (!q_strncasecmp(e, "scalemin=", 9))
						mod->scalemin = atof(e+9);
					else if (!q_strncasecmp(e, "scalemax=", 9))
						mod->scalemax = atof(e+9);
					else if (!q_strncasecmp(e, "trail=", 6))
					{
						mod->traileffect = P_AllocateParticleType(config, e+6);//careful - this can realloc all the particle types
						ptype = &part_type[pnum];
					}
					else if (!q_strncasecmp(e, "orient", 6))
						mod->rflags |= RF_USEORIENTATION;	//use the dir to orient the model, instead of always facing up.
					else if (!q_strncasecmp(e, "additive", 8))
						mod->rflags |= RF_ADDITIVE;			//additive blend
					else if (!q_strncasecmp(e, "transparent", 11))
						mod->rflags |= RF_TRANSLUCENT;		//force blend
					else if (!q_strncasecmp(e, "fullbright", 10))
						mod->rflags |= Q2RF_FULLBRIGHT;		//fullbright, woo
					else if (!q_strncasecmp(e, "shadow", 6))
						mod->rflags &= ~RF_NOSHADOW;		//clear noshadow
					else if (!q_strncasecmp(e, "noshadow", 8))
						mod->rflags |= RF_NOSHADOW;			//set noshadow (cos... you know...)
					else
						Con_Printf("Bad named argument: %s\n", e);
				}
			}
			else
			{
				mod->framestart = atof(Cmd_Argv(2));
				mod->framecount = atof(Cmd_Argv(3));
				mod->framerate = atof(Cmd_Argv(4));
				mod->alpha = atof(Cmd_Argv(5));
				if (*Cmd_Argv(6))
				{
					mod->traileffect = P_AllocateParticleType(config, Cmd_Argv(6));//careful - this can realloc all the particle types
					ptype = &part_type[pnum];
				}
				else
					mod->traileffect = P_INVALID;
			}
		}
#endif
		else if (!strcmp(var, "sound"))
		{
			const char *e;
			ptype->sounds = Z_Realloc(ptype->sounds, sizeof(partsounds_t)*(ptype->numsounds+1));
			q_strlcpy(ptype->sounds[ptype->numsounds].name, Cmd_Argv(1), sizeof(ptype->sounds[ptype->numsounds].name));
			if (*ptype->sounds[ptype->numsounds].name)
				S_PrecacheSound(ptype->sounds[ptype->numsounds].name);

			ptype->sounds[ptype->numsounds].vol = 1;
			ptype->sounds[ptype->numsounds].atten = 1;
			ptype->sounds[ptype->numsounds].pitch = 100;
			ptype->sounds[ptype->numsounds].delay = 0;
			ptype->sounds[ptype->numsounds].weight = 0;

			strtoul(Cmd_Argv(2), (char**)&e, 0);
			while(*e == ' ' || *e == '\t')
				e++;
			if (*e)
			{
				int p;
				for(p = 2; p < Cmd_Argc(); p++)
				{
					e = Cmd_Argv(p);

					if (!q_strncasecmp(e, "vol=", 4) || !q_strncasecmp(e, "volume=", 7))
						ptype->sounds[ptype->numsounds].vol = atof(strchr(e, '=')+1);
					else if (!q_strncasecmp(e, "attn=", 5) || !q_strncasecmp(e, "atten=", 6) || !q_strncasecmp(e, "attenuation=", 12))
					{
						e = strchr(e, '=')+1;
						if (!strcmp(e, "none"))
							ptype->sounds[ptype->numsounds].atten = 0;
						else if (!strcmp(e, "normal"))
							ptype->sounds[ptype->numsounds].atten = 1;
						else
							ptype->sounds[ptype->numsounds].atten = atof(e);
					}
					else if (!q_strncasecmp(e, "pitch=", 6))
						ptype->sounds[ptype->numsounds].pitch = atof(strchr(e, '=')+1);
					else if (!q_strncasecmp(e, "delay=", 6))
						ptype->sounds[ptype->numsounds].delay = atof(strchr(e, '=')+1);
					else if (!q_strncasecmp(e, "weight=", 7))
						ptype->sounds[ptype->numsounds].weight = atof(strchr(e, '=')+1);
					else
						Con_Printf("Bad named argument: %s\n", e);
				}
			}
			else
			{
				ptype->sounds[ptype->numsounds].vol = atof(Cmd_Argv(2));
				if (!ptype->sounds[ptype->numsounds].vol)
					ptype->sounds[ptype->numsounds].vol = 1;
				ptype->sounds[ptype->numsounds].atten = atof(Cmd_Argv(3));
				if (!ptype->sounds[ptype->numsounds].atten)
					ptype->sounds[ptype->numsounds].atten = 1;
				ptype->sounds[ptype->numsounds].pitch = atof(Cmd_Argv(4));
				if (!ptype->sounds[ptype->numsounds].pitch)
					ptype->sounds[ptype->numsounds].pitch = 100;
				ptype->sounds[ptype->numsounds].delay = atof(Cmd_Argv(5));
				if (!ptype->sounds[ptype->numsounds].delay)
					ptype->sounds[ptype->numsounds].delay = 0;
				ptype->sounds[ptype->numsounds].weight = atof(Cmd_Argv(6));
			}
			if (!ptype->sounds[ptype->numsounds].weight)
				ptype->sounds[ptype->numsounds].weight = 1;
			ptype->numsounds++;
		}
		else if (!strcmp(var, "colorindex"))
		{
			if (Cmd_Argc()>2)
				ptype->colorrand = strtoul(Cmd_Argv(2), NULL, 0);
			ptype->colorindex = strtoul(value, NULL, 0);
		}
		else if (!strcmp(var, "colorrand"))
			ptype->colorrand = atoi(value); // now obsolete
		else if (!strcmp(var, "citracer"))
			ptype->flags |= PT_CITRACER;

		else if (!strcmp(var, "red"))
			ptype->rgb[0] = atof(value)/255;
		else if (!strcmp(var, "green"))
			ptype->rgb[1] = atof(value)/255;
		else if (!strcmp(var, "blue"))
			ptype->rgb[2] = atof(value)/255;
		else if (!strcmp(var, "rgb"))
		{	//byte version
			ptype->rgb[0] = ptype->rgb[1] = ptype->rgb[2] = atof(value)/255;
			if (Cmd_Argc()>3)
			{
				ptype->rgb[1] = atof(Cmd_Argv(2))/255;
				ptype->rgb[2] = atof(Cmd_Argv(3))/255;
			}
		}
		else if (!strcmp(var, "rgbf"))
		{	//float version
			ptype->rgb[0] = ptype->rgb[1] = ptype->rgb[2] = atof(value);
			if (Cmd_Argc()>3)
			{
				ptype->rgb[1] = atof(Cmd_Argv(2));
				ptype->rgb[2] = atof(Cmd_Argv(3));
			}
		}

		else if (!strcmp(var, "reddelta"))
		{
			ptype->rgbchange[0] = atof(value)/255;
			if (!ptype->rgbchangetime)
				ptype->rgbchangetime = ptype->die;
		}
		else if (!strcmp(var, "greendelta"))
		{
			ptype->rgbchange[1] = atof(value)/255;
			if (!ptype->rgbchangetime)
				ptype->rgbchangetime = ptype->die;
		}
		else if (!strcmp(var, "bluedelta"))
		{
			ptype->rgbchange[2] = atof(value)/255;
			if (!ptype->rgbchangetime)
				ptype->rgbchangetime = ptype->die;
		}
		else if (!strcmp(var, "rgbdelta"))
		{	//byte version
			ptype->rgbchange[0] = ptype->rgbchange[1] = ptype->rgbchange[2] = atof(value)/255;
			if (Cmd_Argc()>3)
			{
				ptype->rgbchange[1] = atof(Cmd_Argv(2))/255;
				ptype->rgbchange[2] = atof(Cmd_Argv(3))/255;
			}
			if (!ptype->rgbchangetime)
				ptype->rgbchangetime = ptype->die;
		}
		else if (!strcmp(var, "rgbdeltaf"))
		{	//float version
			ptype->rgbchange[0] = ptype->rgbchange[1] = ptype->rgbchange[2] = atof(value);
			if (Cmd_Argc()>3)
			{
				ptype->rgbchange[1] = atof(Cmd_Argv(2));
				ptype->rgbchange[2] = atof(Cmd_Argv(3));
			}
			if (!ptype->rgbchangetime)
				ptype->rgbchangetime = ptype->die;
		}
		else if (!strcmp(var, "rgbdeltatime"))
			ptype->rgbchangetime = atof(value);

		else if (!strcmp(var, "redrand"))
			ptype->rgbrand[0] = atof(value)/255;
		else if (!strcmp(var, "greenrand"))
			ptype->rgbrand[1] = atof(value)/255;
		else if (!strcmp(var, "bluerand"))
			ptype->rgbrand[2] = atof(value)/255;
		else if (!strcmp(var, "rgbrand"))
		{	//byte version
			ptype->rgbrand[0] = ptype->rgbrand[1] = ptype->rgbrand[2] = atof(value)/255;
			if (Cmd_Argc()>3)
			{
				ptype->rgbrand[1] = atof(Cmd_Argv(2))/255;
				ptype->rgbrand[2] = atof(Cmd_Argv(3))/255;
			}
		}
		else if (!strcmp(var, "rgbrandf"))
		{	//float version
			ptype->rgbrand[0] = ptype->rgbrand[1] = ptype->rgbrand[2] = atof(value);
			if (Cmd_Argc()>3)
			{
				ptype->rgbrand[1] = atof(Cmd_Argv(2));
				ptype->rgbrand[2] = atof(Cmd_Argv(3));
			}
		}

		else if (!strcmp(var, "rgbrandsync"))
		{
			ptype->rgbrandsync[0] = ptype->rgbrandsync[1] = ptype->rgbrandsync[2] = atof(value);
			if (Cmd_Argc()>3)
			{
				ptype->rgbrandsync[1] = atof(Cmd_Argv(2));
				ptype->rgbrandsync[2] = atof(Cmd_Argv(3));
			}
		}
		else if (!strcmp(var, "redrandsync"))
			ptype->rgbrandsync[0] = atof(value);
		else if (!strcmp(var, "greenrandsync"))
			ptype->rgbrandsync[1] = atof(value);
		else if (!strcmp(var, "bluerandsync"))
			ptype->rgbrandsync[2] = atof(value);

		else if (!strcmp(var, "stains"))
			ptype->stainonimpact = atof(value);
		else if (!strcmp(var, "blend"))
		{
			ptype->looks.premul = false;
			if (!strcmp(value, "adda") || !strcmp(value, "add"))
				ptype->looks.blendmode = BM_ADDA;
			else if (!strcmp(value, "addc"))
				ptype->looks.blendmode = BM_ADDC;
			else if (!strcmp(value, "subtract"))
				ptype->looks.blendmode = BM_SUBTRACT;
			else if (!strcmp(value, "invmoda") || !strcmp(value, "invmod"))
				ptype->looks.blendmode = BM_INVMODA;
			else if (!strcmp(value, "invmodc"))
				ptype->looks.blendmode = BM_INVMODC;
			else if (!strcmp(value, "blendcolour") || !strcmp(value, "blendcolor"))
				ptype->looks.blendmode = BM_BLENDCOLOUR;
			else if (!strcmp(value, "blendalpha"))
				ptype->looks.blendmode = BM_BLEND;
			else if (!strcmp(value, "premul_subtract"))
			{
				ptype->looks.premul = 1;
				ptype->looks.blendmode = BM_INVMODC;
			}
			else if (!strcmp(value, "premul_add"))
			{
				ptype->looks.premul = 2;
				ptype->looks.blendmode = BM_PREMUL;
			}
			else if (!strcmp(value, "premul_blend"))
			{
				ptype->looks.premul = 1;
				ptype->looks.blendmode = BM_PREMUL;
			}
			else
				ptype->looks.blendmode = BM_BLEND;	//fallback
		}
		else if (!strcmp(var, "spawnmode"))
		{
			if (!strcmp(value, "circle"))
				ptype->spawnmode = SM_CIRCLE;
			else if (!strcmp(value, "ball"))
				ptype->spawnmode = SM_BALL;
			else if (!strcmp(value, "spiral"))
				ptype->spawnmode = SM_SPIRAL;
			else if (!strcmp(value, "tracer"))
				ptype->spawnmode = SM_TRACER;
			else if (!strcmp(value, "telebox"))
				ptype->spawnmode = SM_TELEBOX;
			else if (!strcmp(value, "lavasplash"))
				ptype->spawnmode = SM_LAVASPLASH;
			else if (!strcmp(value, "uniformcircle"))
				ptype->spawnmode = SM_UNICIRCLE;
			else if (!strcmp(value, "syncfield"))
			{
				ptype->spawnmode = SM_FIELD;
#ifndef NOLEGACY
				ptype->spawnparam1 = 16;
				ptype->spawnparam2 = 0;
#endif
			}
			else if (!strcmp(value, "distball"))
				ptype->spawnmode = SM_DISTBALL;
			else
				ptype->spawnmode = SM_BOX;

			if (Cmd_Argc()>2)
			{
				if (Cmd_Argc()>3)
					ptype->spawnparam2 = atof(Cmd_Argv(3));
				ptype->spawnparam1 = atof(Cmd_Argv(2));
			}
		}
		else if (!strcmp(var, "type"))
		{
			if (!strcmp(value, "beam"))
				ptype->looks.type = PT_BEAM;
			else if (!strcmp(value, "spark") || !strcmp(value, "linespark"))
				ptype->looks.type = PT_SPARK;
			else if (!strcmp(value, "sparkfan") || !strcmp(value, "trianglefan"))
				ptype->looks.type = PT_SPARKFAN;
			else if (!strcmp(value, "texturedspark"))
				ptype->looks.type = PT_TEXTUREDSPARK;
			else if (!strcmp(value, "decal") || !strcmp(value, "cdecal"))
				ptype->looks.type = PT_CDECAL;
			else if (!strcmp(value, "udecal"))
				ptype->looks.type = PT_UDECAL;
			else
				ptype->looks.type = PT_NORMAL;
			settype = true;
		}
		else if (!strcmp(var, "clippeddecal"))	//mask, match
		{
			if (Cmd_Argc()>=2)
			{//decal only appears where: (surfflags&mask)==match
				ptype->surfflagmatch = ptype->surfflagmask = strtoul(Cmd_Argv(1), NULL, 0);
				if (Cmd_Argc()>=3)
					ptype->surfflagmatch = strtoul(Cmd_Argv(2), NULL, 0);
			}
			ptype->looks.type = PT_CDECAL;
			settype = true;
		}
#ifndef NOLEGACY
		else if (!strcmp(var, "isbeam"))
		{
			Con_DPrintf("%s.%s: isbeam is deprecated, use type beam\n", ptype->config, ptype->name);
			ptype->looks.type = PT_BEAM;
			settype = true;
		}
#endif
		else if (!strcmp(var, "spawntime"))
			ptype->spawntime = atof(value);
		else if (!strcmp(var, "spawnchance"))
			ptype->spawnchance = atof(value);
		else if (!strcmp(var, "cliptype"))
		{
			assoc = P_AllocateParticleType(config, value);//careful - this can realloc all the particle types
			ptype = &part_type[pnum];
			ptype->cliptype = assoc;
		}
		else if (!strcmp(var, "clipcount"))
			ptype->clipcount = atof(value);
		else if (!strcmp(var, "clipbounce"))
		{
			ptype->clipbounce = atof(value);
			if (ptype->clipbounce < 0 && ptype->cliptype == P_INVALID)
				ptype->cliptype = pnum;
		}
		else if (!strcmp(var, "bounce"))
		{
			ptype->cliptype = pnum;
			ptype->clipbounce = atof(value);
		}

		else if (!strcmp(var, "emit"))
		{
			assoc = P_AllocateParticleType(config, value);//careful - this can realloc all the particle types
			ptype = &part_type[pnum];
			ptype->emit = assoc;
		}
		else if (!strcmp(var, "emitinterval"))
			ptype->emittime = atof(value);
		else if (!strcmp(var, "emitintervalrand"))
			ptype->emitrand = atof(value);
		else if (!strcmp(var, "emitstart"))
			ptype->emitstart = atof(value);

#ifndef NOLEGACY
		// old names
		else if (!strcmp(var, "areaspread"))
		{
			Con_DPrintf("%s.%s: areaspread is deprecated, use spawnorg\n", ptype->config, ptype->name);
			ptype->areaspread = atof(value);
		}
		else if (!strcmp(var, "areaspreadvert"))
		{
			Con_DPrintf("%s.%s: areaspreadvert is deprecated, use spawnorg\n", ptype->config, ptype->name);
			ptype->areaspreadvert = atof(value);
		}
		else if (!strcmp(var, "offsetspread"))
		{
			Con_DPrintf("%s.%s: offsetspread is deprecated, use spawnvel\n", ptype->config, ptype->name);
			ptype->spawnvel = atof(value);
		}
		else if (!strcmp(var, "offsetspreadvert"))
		{
			Con_DPrintf("%s.%s: offsetspreadvert is deprecated, use spawnvel\n", ptype->config, ptype->name);
			ptype->spawnvelvert  = atof(value);
		}
#endif

		// current names
		else if (!strcmp(var, "spawnorg"))
		{
			ptype->areaspreadvert = ptype->areaspread = atof(value);

			if (Cmd_Argc()>2)
				ptype->areaspreadvert = atof(Cmd_Argv(2));
		}
		else if (!strcmp(var, "spawnvel"))
		{
			ptype->spawnvelvert = ptype->spawnvel = atof(value);

			if (Cmd_Argc()>2)
				ptype->spawnvelvert = atof(Cmd_Argv(2));
		}

#ifndef NOLEGACY
		// spawn mode param fields
		else if (!strcmp(var, "spawnparam1"))
		{
			ptype->spawnparam1 = atof(value);
			Con_DPrintf("%s.%s: 'spawnparam1' is deprecated, use 'spawnmode foo X'\n", ptype->config, ptype->name);
		}
		else if (!strcmp(var, "spawnparam2"))
		{
			ptype->spawnparam2 = atof(value);
			Con_DPrintf("%s.%s: 'spawnparam2' is deprecated, use 'spawnmode foo X Y'\n", ptype->config, ptype->name);
		}
/*		else if (!strcmp(var, "spawnparam3"))
			ptype->spawnparam3 = atof(value); */
		else if (!strcmp(var, "up"))
			ptype->orgbias[2] = atof(value);
#endif

		else if (!strcmp(var, "rampmode"))
		{
			if (!strcmp(value, "none"))
				ptype->rampmode = RAMP_NONE;
#ifndef NOLEGACY
			else if (!strcmp(value, "absolute"))
			{
				Con_DPrintf("%s.%s: 'rampmode absolute' is deprecated, use 'rampmode nearest'\n", ptype->config, ptype->name);
				ptype->rampmode = RAMP_NEAREST;
			}
#endif
			else if (!strcmp(value, "nearest"))
				ptype->rampmode = RAMP_NEAREST;
			else if (!strcmp(value, "lerp"))	//don't use the name 'linear'. ramps are there to avoid linear...
				ptype->rampmode = RAMP_LERP;
			else //if (!strcmp(value, "delta"))
				ptype->rampmode = RAMP_DELTA;
		}
		else if (!strcmp(var, "rampindexlist"))
		{ // better not use this with delta ramps...
			int cidx, i;

			i = 1;
			while (i < Cmd_Argc())
			{
				ptype->ramp = Z_Realloc(ptype->ramp, sizeof(ramp_t)*(ptype->rampindexes+1));

				cidx = atoi(Cmd_Argv(i));
				ptype->ramp[ptype->rampindexes].alpha = cidx > 255 ? 0.5 : 1;

				cidx = (cidx & 0xff) * 4;
				ptype->ramp[ptype->rampindexes].rgb[0] = palrgba[cidx] * (1/255.0);
				ptype->ramp[ptype->rampindexes].rgb[1] = palrgba[cidx+1] * (1/255.0);
				ptype->ramp[ptype->rampindexes].rgb[2] = palrgba[cidx+2] * (1/255.0);

				ptype->ramp[ptype->rampindexes].scale = ptype->scale;

				ptype->rampindexes++;
				i++;
			}
		}
		else if (!strcmp(var, "rampindex"))
		{
			int cidx;
			ptype->ramp = Z_Realloc(ptype->ramp, sizeof(ramp_t)*(ptype->rampindexes+1));

			cidx = atoi(value);
			ptype->ramp[ptype->rampindexes].alpha = cidx > 255 ? 0.5 : 1;

			if (Cmd_Argc() > 2) // they gave alpha
				ptype->ramp[ptype->rampindexes].alpha *= atof(Cmd_Argv(2));

			cidx = (cidx & 0xff) * 4;
			ptype->ramp[ptype->rampindexes].rgb[0] = palrgba[cidx] * (1/255.0);
			ptype->ramp[ptype->rampindexes].rgb[1] = palrgba[cidx+1] * (1/255.0);
			ptype->ramp[ptype->rampindexes].rgb[2] = palrgba[cidx+2] * (1/255.0);

			if (Cmd_Argc() > 3) // they gave scale
				ptype->ramp[ptype->rampindexes].scale = atof(Cmd_Argv(3));
			else
				ptype->ramp[ptype->rampindexes].scale = ptype->scale;


			ptype->rampindexes++;
		}
		else if (!strcmp(var, "ramp"))
		{
			ptype->ramp = Z_Realloc(ptype->ramp, sizeof(ramp_t)*(ptype->rampindexes+1));

			ptype->ramp[ptype->rampindexes].rgb[0] = atof(value)/255;
			if (Cmd_Argc()>3)	//seperate rgb
			{
				ptype->ramp[ptype->rampindexes].rgb[1] = atof(Cmd_Argv(2))/255;
				ptype->ramp[ptype->rampindexes].rgb[2] = atof(Cmd_Argv(3))/255;

				if (Cmd_Argc()>4)	//have we alpha and scale changes?
				{
					ptype->ramp[ptype->rampindexes].alpha = atof(Cmd_Argv(4));
					if (Cmd_Argc()>5)	//have we scale changes?
						ptype->ramp[ptype->rampindexes].scale = atof(Cmd_Argv(5));
					else
						ptype->ramp[ptype->rampindexes].scale = ptype->scaledelta;
				}
				else
				{
					ptype->ramp[ptype->rampindexes].alpha = ptype->alpha;
					ptype->ramp[ptype->rampindexes].scale = ptype->scaledelta;
				}
			}
			else	//they only gave one value
			{
				ptype->ramp[ptype->rampindexes].rgb[1] = ptype->ramp[ptype->rampindexes].rgb[0];
				ptype->ramp[ptype->rampindexes].rgb[2] = ptype->ramp[ptype->rampindexes].rgb[0];

				ptype->ramp[ptype->rampindexes].alpha = ptype->alpha;
				ptype->ramp[ptype->rampindexes].scale = ptype->scaledelta;
			}

			ptype->rampindexes++;
		}
		else if (!strcmp(var, "viewspace"))
			ptype->viewspacefrac = (Cmd_Argc()>1)?atof(value):1;
		else if (!strcmp(var, "perframe"))
			ptype->flags |= PT_INVFRAMETIME;
		else if (!strcmp(var, "averageout"))
			ptype->flags |= PT_AVERAGETRAIL;
		else if (!strcmp(var, "nostate"))
			ptype->flags |= PT_NOSTATE;
		else if (!strcmp(var, "nospreadfirst"))
			ptype->flags |= PT_NOSPREADFIRST;
		else if (!strcmp(var, "nospreadlast"))
			ptype->flags |= PT_NOSPREADLAST;

		else if (!strcmp(var, "lightradius"))
		{	//float version
			ptype->dl_radius[0] = ptype->dl_radius[1] = atof(value);
			if (Cmd_Argc()>2)
				ptype->dl_radius[1] = atof(Cmd_Argv(2));
			ptype->dl_radius[1] -= ptype->dl_radius[0];
		}
		else if (!strcmp(var, "lightradiusfade"))
			ptype->dl_decay[3] = atof(value);
		else if (!strcmp(var, "lightrgb"))
		{
			ptype->dl_rgb[0] = atof(value);
			ptype->dl_rgb[1] = atof(Cmd_Argv(2));
			ptype->dl_rgb[2] = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "lightrgbfade"))
		{
			ptype->dl_decay[0] = atof(value);
			ptype->dl_decay[1] = atof(Cmd_Argv(2));
			ptype->dl_decay[2] = atof(Cmd_Argv(3));
		}
		else if (!strcmp(var, "lightcorona"))
		{
			ptype->dl_corona_intensity = atof(value);
			ptype->dl_corona_scale = atof(Cmd_Argv(2));
		}
		else if (!strcmp(var, "lighttime"))
			ptype->dl_time = atof(value);
		else if (!strcmp(var, "lightshadows"))
			ptype->flags = (ptype->flags & ~PT_NODLSHADOW) | (atof(value)?0:PT_NODLSHADOW);
		else if (!strcmp(var, "lightcubemap"))
			ptype->dl_cubemapnum = atoi(value);
		else if (!strcmp(var, "lightscales"))
		{	//ambient diffuse specular
			ptype->dl_scales[0] = atof(value);
			ptype->dl_scales[1] = atof(Cmd_Argv(2));
			ptype->dl_scales[2] = atof(Cmd_Argv(3));
		}
#if UNSUPPORTED
		else if (!strcmp(var, "spawnstain"))
		{
			ptype->stain_radius = atof(value);
			ptype->stain_rgb[0] = atof(Cmd_Argv(2));
			ptype->stain_rgb[1] = atof(Cmd_Argv(3));
			ptype->stain_rgb[2] = atof(Cmd_Argv(4));
		}
#endif
		else
			Con_DPrintf("%s.%s: %s is not a recognised particle type field\n", ptype->config, ptype->name, var);
	}
	ptype->loaded = part_parseweak?1:2;
	if (ptype->clipcount < 1)
		ptype->clipcount = 1;

	if (!settype)
	{
		if (ptype->looks.type == PT_NORMAL && !*ptype->texname)
		{
			if (ptype->scale)
			{
				ptype->looks.type = PT_SPARKFAN;
				Con_DPrintf("%s.%s: effect lacks a texture. assuming type sparkfan.\n", ptype->config, ptype->name);
			}
			else
			{
				ptype->looks.type = PT_SPARK;
				Con_DPrintf("%s.%s: effect lacks a texture. assuming type spark.\n", ptype->config, ptype->name);
			}
		}
		else if (ptype->looks.type == PT_SPARK)
		{
			if (*ptype->texname)
				ptype->looks.type = PT_TEXTUREDSPARK;
			else if (ptype->scale)
				ptype->looks.type = PT_SPARKFAN;
		}
	}

	// use old behavior if not using alphadelta
	if (!setalphadelta)
		ptype->alphachange = (-ptype->alphachange / ptype->die) * ptype->alpha;

	FinishParticleType(ptype);

	if (ptype->looks.type == PT_BEAM && !setbeamlen)
		ptype->rotationstartmin = 1/128.0;

	goto nexteffect;
}

#if 1//_DEBUG
// R_BeamInfo_f - debug junk
static void P_BeamInfo_f (void)
{
	beamseg_t *bs;
	int i, j, k, l, m;

	i = 0;

	for (bs = free_beams; bs; bs = bs->next)
		i++;

	Con_Printf("%i free beams\n", i);

	for (i = 0; i < numparticletypes; i++)
	{
		m = l = k = j = 0;
		for (bs = part_type[i].beams; bs; bs = bs->next)
		{
			if (!bs->p)
				k++;

			if (bs->flags & BS_DEAD)
				l++;

			if (bs->flags & BS_LASTSEG)
				m++;

			j++;
		}

		if (j)
			Con_Printf("Type %i = %i NULL p, %i DEAD, %i LASTSEG, %i total\n", i, k, l, m, j);
	}
}

static void P_PartInfo_f (void)
{
	particle_t *p;
	clippeddecal_t *d;
	part_type_t *ptype;
	int totalp = 0, totald = 0, freep, freed, runningp=0, runningd=0, runninge=0, runningt=0;

	int i, j, k;

	Con_DPrintf("Full list of  effects:\n");
	for (i = 0; i < numparticletypes; i++)
	{
		j = 0;
		for (p = part_type[i].particles; p; p = p->next)
			j++;
		totalp += j;

		k = 0;
		for (d = part_type[i].clippeddecals; d; d = d->next)
			k++;
		totald += k;

		if (j||k)
		{
			Con_DPrintf("Type %s.%s = %i+%i total\n", part_type[i].config, part_type[i].name, j,k);
			if (!(part_type[i].state & PS_INRUNLIST))
				Con_Printf(CON_WARNING "%s.%s NOT RUNNING\n", part_type[i].config, part_type[i].name);
		}
	}

	Con_Printf("Running effects:\n");
	// maintain run list
	for (ptype = part_run_list; ptype; ptype = ptype->nexttorun)
	{
		Con_Printf("Type %s.%s", ptype->config, ptype->name);

		j = 0;
		for (p = ptype->particles; p; p = p->next)
			j++;
		if (j)
		{
			Con_Printf("\t%i particles", j);
			if (ptype->cliptype >= 0 || ptype->stainonimpact)
			{
				Con_Printf("(+traceline)");
				runningt += j;
			}
		}
		runningp += j;

		k = 0;
		for (d = ptype->clippeddecals; d; d = d->next)
			k++;
		if (k)
			Con_Printf("%s%i decals", ptype->particles?", ":"\t", k);
		runningd += k;

		Con_Printf("\n");
		runninge++;
	}
	Con_Printf("End of list\n");

	for (p = free_particles, freep = 0; p; p = p->next)
		freep++;
	for (d = free_decals, freed = 0; d; d = d->next)
		freed++;

	Con_DPrintf("%i running effects.\n", runninge);
	Con_Printf("%i particles, %i free, %i traces.\n", runningp, freep, runningt);
	Con_Printf("%i decals, %i free.\n", runningd, freed);

	if (totalp != runningp)
		Con_Printf("%i particles unaccounted for\n", totalp - runningp);
	if (totald != runningd)
		Con_Printf("%i decals unaccounted for\n", totald - runningd);
}
#endif

static void FinishParticleType(part_type_t *ptype)
{
	//if there is a chance that it moves
	if (ptype->gravity || ptype->veladd || ptype->spawnvel || ptype->spawnvelvert || DotProduct(ptype->velwrand,ptype->velwrand) || DotProduct(ptype->velbias,ptype->velbias) || ptype->flurry)
		ptype->flags |= PT_VELOCITY;
	if (DotProduct(ptype->velbias,ptype->velbias) || DotProduct(ptype->velwrand,ptype->velwrand) || DotProduct(ptype->orgwrand,ptype->orgwrand))
		ptype->flags |= PT_WORLDSPACERAND;
	//if it has friction
	if (ptype->friction[0] || ptype->friction[1] || ptype->friction[2])
		ptype->flags |= PT_FRICTION;

	P_LoadTexture(ptype, true);
	if (ptype->dl_decay[3] && !ptype->dl_time)
		ptype->dl_time = ptype->dl_radius[0] / ptype->dl_decay[3];
	if (ptype->looks.scalefactor > 1 && !ptype->looks.invscalefactor)
	{
		ptype->scale *= ptype->looks.scalefactor;
		ptype->scalerand *= ptype->looks.scalefactor;
		/*too lazy to go through ramps*/
		ptype->looks.scalefactor = 1;
	}
	ptype->looks.invscalefactor = 1-ptype->looks.scalefactor;

	if (ptype->looks.type == PT_TEXTUREDSPARK && !ptype->looks.stretch)
		ptype->looks.stretch = 0.05;	//the old default.

	if (ptype->looks.type == PT_SPARK && r_part_sparks.value<0)
		ptype->looks.type = PT_INVISIBLE;
	if (ptype->looks.type == PT_TEXTUREDSPARK && !r_part_sparks_textured.value)
		ptype->looks.type = PT_SPARK;
	if (ptype->looks.type == PT_SPARKFAN && !r_part_sparks_trifan.value)
		ptype->looks.type = PT_SPARK;
	if (ptype->looks.type == PT_SPARK && !r_part_sparks.value)
		ptype->looks.type = PT_INVISIBLE;
	if (ptype->looks.type == PT_BEAM && r_part_beams.value <= 0)
		ptype->looks.type = PT_INVISIBLE;
	
	if (ptype->rampmode && !ptype->ramp)
	{
		ptype->rampmode = RAMP_NONE;
		Con_Printf("%s.%s: Particle has a ramp mode but no ramp\n", ptype->config, ptype->name);
	}
	else if (ptype->ramp && !ptype->rampmode)
	{
		Con_Printf("%s.%s: Particle has a ramp but no ramp mode\n", ptype->config, ptype->name);
	}
	r_plooksdirty = true;
}

#ifdef PSET_SCRIPT_EFFECTINFO
static void FinishEffectinfoParticleType(part_type_t *ptype, qboolean blooddecalonimpact)
{
	if (ptype->looks.type == PT_CDECAL)
	{
		if (ptype->die == 9999)
			ptype->die = 20;
		ptype->alphachange = -(ptype->alpha / ptype->die);
	}
	else if (ptype->looks.type == PT_UDECAL)
	{
		//dp's decals have a size as a radius. fte's udecals are 'just' quads.
		//also, dp uses 'stretch'.
		ptype->looks.stretch *= 1/1.414213562373095;
		ptype->scale *= ptype->looks.stretch;
		ptype->scalerand *= ptype->looks.stretch;
		ptype->scaledelta *= ptype->looks.stretch;
		ptype->looks.stretch = 1;
	}
	else if (ptype->looks.type == PT_NORMAL)
	{
		//fte's textured particles are *0.25 for some reason.
		//but fte also uses radiuses, while dp uses total size so we only need to double it here..
		ptype->scale *= 2*ptype->looks.stretch;
		ptype->scalerand *= 2*ptype->looks.stretch;
		ptype->scaledelta *= 2*2*ptype->looks.stretch;
		ptype->looks.stretch = 1;
	}
	if (blooddecalonimpact)	//DP blood particles generate decals unconditionally (and prevent blood from bouncing)
		ptype->clipbounce = -2;
	if (ptype->looks.type == PT_TEXTUREDSPARK)
	{
		ptype->looks.stretch *= 0.04;
		if (ptype->looks.stretch < 0)
			ptype->looks.stretch = 0.000001;
	}
	
	if (ptype->die == 9999)	//internal: means unspecified.
	{
		if (ptype->alphachange)
			ptype->die = (ptype->alpha+ptype->alpharand)/-ptype->alphachange;
		else
			ptype->die = 15;
	}
	ptype->looks.minstretch = 0.5;
	FinishParticleType(ptype);
}
static void P_ImportEffectInfo(const char *config, char *line, qboolean part_parseweak)
{
	part_type_t *ptype = NULL;
	int parenttype;
	char arg[8][1024];
	unsigned int args = 0;
	qboolean blooddecalonimpact = false;	//tracked separately because it needs to override another field

	float teximages[256][4];

	{
		int i;
		FILE *file;
		const char *line;
		char linebuf[1024];
		//default assumes 8*8 grid, but we allow more
		for (i = 0; i < 256; i++)
		{
			teximages[i][0] = 1/8.0 * (i & 7);
			teximages[i][1] = 1/8.0 * (1+(i & 7));
			teximages[i][2] = 1/8.0 * (1+(i>>3));
			teximages[i][3] = 1/8.0 * (i>>3);
		}

		COM_FOpenFile("particles/particlefont.txt", &file, NULL);
		if (file)
		{
			while (fgets(linebuf, sizeof(linebuf), file))
			{
				float s1,s2,t1,t2;
				line = COM_Parse(linebuf);
				i = atoi(com_token);
				line = COM_Parse(line);
				s1 = atof(com_token);
				line = COM_Parse(line);
				t1 = atof(com_token);
				line = COM_Parse(line);
				s2 = atof(com_token);
				line = COM_Parse(line);
				t2 = atof(com_token);
				if (line)
				{
					teximages[i][0] = s1;
					teximages[i][1] = s2;
					teximages[i][2] = t2;
					teximages[i][3] = t1;
				}
			}
			fclose(file);
		}
	}

	for (;line && *line;)
	{
		char *eol;

		//multi-line comments need special handling.
		while (*line == ' ' || *line == '\t')
			line++;
		if (line[0] == '/' && line[1] == '*')
		{
			line += 2;
			while (*line)
			{
				if (line[0] == '*' && line[1] == '/')
				{
					line+=2;
					break;
				}
				line++;
			}
			continue;
		}

		eol = strchr(line, '\n');
		args = 0;
		if (eol)
			*eol++=0;
		for (args = 0; line; )
		{
			line = (char*)COM_Parse(line);
			if (line && args < sizeof(arg)/sizeof(arg[args]))
			{
				q_strlcpy(arg[args], com_token, sizeof(arg[args]));
				args++;
			}
		}
		line = eol;

		if (args <= 0)
			continue;

		if (!strcmp(arg[0], "effect"))
		{
			char newname[64];
			int i;

			if (ptype)
				FinishEffectinfoParticleType(ptype, blooddecalonimpact);
			blooddecalonimpact = false;

			ptype = P_GetParticleType(config, arg[1]);
			if (ptype->loaded)
			{
				for (i = 0; i < 64; i++)
				{
					parenttype = ptype - part_type;
					q_snprintf(newname, sizeof(newname), "%i+%s", i, arg[1]);
					ptype = P_GetParticleType(config, newname);
					if (!ptype->loaded)
					{
						part_type[parenttype].assoc = ptype - part_type;
						break;
					}
				}
				if (i == 64)
				{
					Con_Printf("Too many duplicate names, gave up\n");
					break;
				}
			}
			P_ResetToDefaults(ptype);
			ptype->loaded = part_parseweak?1:2;
			ptype->scale = 1;
			ptype->alpha = 0;
			ptype->alpharand = 1;
			ptype->alphachange = -1;
			ptype->die = 9999;
			strcpy(ptype->texname, "particles/particlefont");
			ptype->rgb[0] = 1;
			ptype->rgb[1] = 1;
			ptype->rgb[2] = 1;

//			ptype->spawnmode = SM_BALL;

			ptype->colorindex = -1;
			ptype->spawnchance = 1;
			ptype->looks.scalefactor = 2;
			ptype->looks.invscalefactor = 0;
			ptype->looks.type = PT_NORMAL;
			ptype->looks.blendmode = BM_PREMUL;
			ptype->looks.premul = 1;
			ptype->looks.stretch = 1;

			ptype->dl_time = 0;

			i = 63; //default texture is 63.
			ptype->s1 = teximages[i][0];
			ptype->s2 = teximages[i][1];
			ptype->t1 = teximages[i][2];
			ptype->t2 = teximages[i][3];
			ptype->texsstride = 0;
			ptype->randsmax = 1;
		}
		else if (!ptype)
		{
			Con_Printf("Bad effectinfo file\n");
			break;
		}
		else if (!strcmp(arg[0], "countabsolute") && args == 2)
			ptype->countextra = atof(arg[1]);
		else if (!strcmp(arg[0], "count") && args == 2)
			ptype->count = atof(arg[1]);
		else if (!strcmp(arg[0], "type") && args == 2)
		{
			if (!strcmp(arg[1], "decal") || !strcmp(arg[1], "cdecal"))
			{
				ptype->looks.type = PT_CDECAL;
				ptype->looks.blendmode = BM_INVMODC;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "udecal"))
			{
				ptype->looks.type = PT_UDECAL;
				ptype->looks.blendmode = BM_INVMODC;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "alphastatic"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_PREMUL;//BM_BLEND;
				ptype->looks.premul = 1;
			}
			else if (!strcmp(arg[1], "static"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "smoke"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "spark"))
			{
				ptype->looks.type = PT_TEXTUREDSPARK;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "bubble"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "blood"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_INVMODC;
				ptype->looks.premul = 2;
				ptype->gravity = 800*1;
				blooddecalonimpact = true;
			}
			else if (!strcmp(arg[1], "beam"))
			{
				ptype->looks.type = PT_BEAM;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "snow"))
			{
				ptype->looks.type = PT_NORMAL;
				ptype->looks.blendmode = BM_PREMUL;//BM_ADDA;
				ptype->looks.premul = 2;
				ptype->flurry = 32;	//may not still be valid later, but at least it would be an obvious issue with the original.
			}
			else
			{
				Con_Printf("effectinfo type %s not supported\n", arg[1]);
			}
		}
		else if (!strcmp(arg[0], "tex") && args == 3)
		{
			int mini = atoi(arg[1]);
			int maxi = atoi(arg[2]);
			ptype->s1 = teximages[mini][0];
			ptype->s2 = teximages[mini][1];
			ptype->t1 = teximages[mini][2];
			ptype->t2 = teximages[mini][3];
			ptype->texsstride = teximages[(mini+1)&(sizeof(teximages)/sizeof(teximages[0])-1)][0] - teximages[mini][0];
			ptype->randsmax = (maxi - mini);
			if (ptype->randsmax < 1)
				ptype->randsmax = 1;
		}
		else if (!strcmp(arg[0], "size") && args == 3)
		{
			float s1 = atof(arg[1]), s2 = atof(arg[2]);
			ptype->scale = s1;
			ptype->scalerand = (s2-s1);
		}
		else if (!strcmp(arg[0], "sizeincrease") && args == 2)
			ptype->scaledelta = atof(arg[1]);
		else if (!strcmp(arg[0], "color") && args == 3)
		{
			unsigned int rgb1 = strtoul(arg[1], NULL, 0), rgb2 = strtoul(arg[2], NULL, 0);
			int i;
			for (i = 0; i < 3; i++)
			{
				ptype->rgb[i] = ((rgb1>>(16-i*8)) & 0xff)/255.0;
				ptype->rgbrand[i] = (int)(((rgb2>>(16-i*8)) & 0xff) - ((rgb1>>(16-i*8)) & 0xff))/255.0;
				ptype->rgbrandsync[i] = 1;
			}
		}
		else if (!strcmp(arg[0], "alpha") && args == 4)
		{
			float a1 = atof(arg[1]), a2 = atof(arg[2]), f = atof(arg[3]);
			if (a1 > a2)
			{	//backwards
				ptype->alpha = a2/256;
				ptype->alpharand = (a1-a2)/256;
			}
			else
			{
				ptype->alpha = a1/256;
				ptype->alpharand = (a2-a1)/256;
			}
			ptype->alphachange = -f/256;
		}
		else if (!strcmp(arg[0], "velocityoffset") && args == 4)
		{	/*a 3d world-coord addition*/
			ptype->velbias[0] = atof(arg[1]);
			ptype->velbias[1] = atof(arg[2]);
			ptype->velbias[2] = atof(arg[3]);
		}
		else if (!strcmp(arg[0], "velocityjitter") && args == 4)
		{
			ptype->velwrand[0] = atof(arg[1]);
			ptype->velwrand[1] = atof(arg[2]);
			ptype->velwrand[2] = atof(arg[3]);
		}
		else if (!strcmp(arg[0], "originoffset") && args == 4)
		{	/*a 3d world-coord addition*/
			ptype->orgbias[0] = atof(arg[1]);
			ptype->orgbias[1] = atof(arg[2]);
			ptype->orgbias[2] = atof(arg[3]);
		}
		else if (!strcmp(arg[0], "originjitter") && args == 4)
		{
			ptype->orgwrand[0] = atof(arg[1]);
			ptype->orgwrand[1] = atof(arg[2]);
			ptype->orgwrand[2] = atof(arg[3]);
		}
		else if (!strcmp(arg[0], "gravity") && args == 2)
		{
			ptype->gravity = 800*atof(arg[1]);
		}
		else if (!strcmp(arg[0], "bounce") && args == 2)
		{
			ptype->clipbounce = atof(arg[1]);
			if (ptype->clipbounce < 0)
				ptype->cliptype = ptype - part_type;
		}
		else if (!strcmp(arg[0], "airfriction") && args == 2)
			ptype->friction[2] = ptype->friction[1] = ptype->friction[0] = atof(arg[1]);
		else if (!strcmp(arg[0], "liquidfriction") && args == 2)
			;
		else if (!strcmp(arg[0], "underwater") && args == 1)
			ptype->flags |= PT_TRUNDERWATER;
		else if (!strcmp(arg[0], "notunderwater") && args == 1)
			ptype->flags |= PT_TROVERWATER;
		else if (!strcmp(arg[0], "velocitymultiplier") && args == 2)
			ptype->veladd = atof(arg[1]);
		else if (!strcmp(arg[0], "trailspacing") && args == 2)
			ptype->count = 1 / atof(arg[1]);
		else if (!strcmp(arg[0], "time") && args == 3)
		{
			ptype->die = atof(arg[1]);
			ptype->randdie = atof(arg[2]) - ptype->die;
			if (ptype->randdie < 0)
			{
				ptype->die = atof(arg[2]);
				ptype->randdie = atof(arg[1]) - ptype->die;
			}
		}
		else if (!strcmp(arg[0], "stretchfactor") && args == 2)
			ptype->looks.stretch = atof(arg[1]);
		else if (!strcmp(arg[0], "blend") && args == 2)
		{
			if (!strcmp(arg[1], "invmod"))
			{
				ptype->looks.blendmode = BM_INVMODC;
				ptype->looks.premul = 2;
			}
			else if (!strcmp(arg[1], "alpha"))
			{
				ptype->looks.blendmode = BM_PREMUL;
				ptype->looks.premul = 1;
			}
			else if (!strcmp(arg[1], "add"))
			{
				ptype->looks.blendmode = BM_PREMUL;
				ptype->looks.premul = 2;
			}
			else
				Con_Printf("effectinfo 'blend %s' not supported\n", arg[1]);
		}
		else if (!strcmp(arg[0], "orientation") && args == 2)
		{
			if (!strcmp(arg[1], "billboard"))
				ptype->looks.type = PT_NORMAL;
			else if (!strcmp(arg[1], "spark"))
				ptype->looks.type = PT_TEXTUREDSPARK;
			else if (!strcmp(arg[1], "oriented"))	//FIXME: not sure this points the right way. also, its double-sided in dp.
			{
				if (ptype->looks.type != PT_CDECAL)
					ptype->looks.type = PT_UDECAL;
			}
			else if (!strcmp(arg[1], "beam"))
				ptype->looks.type = PT_BEAM;
			else
				Con_Printf("effectinfo 'orientation %s' not supported\n", arg[1]);
		}
		else if (!strcmp(arg[0], "lightradius") && args == 2)
		{
			ptype->dl_radius[0] = atof(arg[1]);
			ptype->dl_radius[1] = 0;
		}
		else if (!strcmp(arg[0], "lightradiusfade") && args == 2)
			ptype->dl_decay[3] = atof(arg[1]);
		else if (!strcmp(arg[0], "lightcolor") && args == 4)
		{
			ptype->dl_rgb[0] = atof(arg[1]);
			ptype->dl_rgb[1] = atof(arg[2]);
			ptype->dl_rgb[2] = atof(arg[3]);
		}
		else if (!strcmp(arg[0], "lighttime") && args == 2)
			ptype->dl_time = atof(arg[1]);
		else if (!strcmp(arg[0], "lightshadow") && args == 2)
			ptype->flags = (ptype->flags & ~PT_NODLSHADOW) | (!atoi(arg[1])?PT_NODLSHADOW:0);
		else if (!strcmp(arg[0], "lightcubemapnum") && args == 2)
			ptype->dl_cubemapnum = atoi(arg[1]);
		else if (!strcmp(arg[0], "lightcorona") && args == 3)
		{
			ptype->dl_corona_intensity = atof(arg[1])*0.25;	//dp scales them by 0.25
			ptype->dl_corona_scale = atof(arg[2]);
		}
#if 1
		else if (!strcmp(arg[0], "staincolor") && args == 3)	//stainmaps multiplier
			Con_DPrintf("Particle effect token %s not supported\n", arg[0]);
		else if (!strcmp(arg[0], "stainalpha") && args == 3)	//affects stainmaps AND stain-decals.
			Con_DPrintf("Particle effect token %s not supported\n", arg[0]);
		else if (!strcmp(arg[0], "stainsize") && args == 3)		//affects stainmaps AND stain-decals.
			Con_DPrintf("Particle effect token %s not supported\n", arg[0]);
		else if (!strcmp(arg[0], "staintex") && args == 3)		//actually spawns a decal
			Con_DPrintf("Particle effect token %s not supported\n", arg[0]);
		else if (!strcmp(arg[0], "stainless") && args == 2)
			Con_DPrintf("Particle effect token %s not supported\n", arg[0]);
#endif
		else if (!strcmp(arg[0], "rotate") && args == 5)
		{
			ptype->rotationstartmin		= atof(arg[1]);
			ptype->rotationstartrand	= atof(arg[2]) - ptype->rotationstartmin;
			ptype->rotationmin			= atof(arg[3]);
			ptype->rotationrand			= atof(arg[4]) - ptype->rotationmin;
			ptype->rotationstartmin		*= M_PI/180;
			ptype->rotationstartrand	*= M_PI/180;
			ptype->rotationmin			*= M_PI/180;
			ptype->rotationrand			*= M_PI/180;
			ptype->rotationstartmin += M_PI/4;
		}
		else
			Con_Printf("Particle effect token not recognised, or invalid args: %s %s %s %s %s %s\n", arg[0], args<2?"":arg[1], args<3?"":arg[2], args<4?"":arg[3], args<5?"":arg[4], args<6?"":arg[5]);
		args = 0;
	}

	if (ptype)
		FinishEffectinfoParticleType(ptype, blooddecalonimpact);

	r_plooksdirty = true;
}

static qboolean P_ImportEffectInfo_Name(char *config)
{
	char *file;

	file = (char*)COM_LoadMallocFile(va("%s.txt", config), NULL);
	if (!file)
	{
		Con_Printf("%s not found\n", config);
		return false;
	}
	P_ImportEffectInfo(config, file, false);
	free(file);
	return true;
}
#endif

/*
===============
R_InitParticles
===============
*/
void PScript_InitParticles (void)
{
	Cvar_RegisterVariable(&r_bouncysparks);
	Cvar_RegisterVariable(&r_part_rain);
#if UNSUPPORTED
	Cvar_RegisterVariable(&r_bloodstains);
#endif
	Cvar_RegisterVariable(&r_decal_noperpendicular);
	Cvar_RegisterVariable(&r_particledesc);
	Cvar_RegisterVariable(&r_part_rain_quantity);
	Cvar_RegisterVariable(&r_particle_tracelimit);
	Cvar_RegisterVariable(&r_part_sparks);
	Cvar_RegisterVariable(&r_part_sparks_trifan);
	Cvar_RegisterVariable(&r_part_sparks_textured);
	Cvar_RegisterVariable(&r_part_beams);
	Cvar_RegisterVariable(&r_part_contentswitch);
	Cvar_RegisterVariable(&r_part_density);
	Cvar_RegisterVariable(&r_part_maxparticles);
	Cvar_RegisterVariable(&r_part_maxdecals);
	Cvar_RegisterVariable(&r_lightflicker);

	Cmd_AddCommand("r_partredirect", P_PartRedirect_f);

//#if _DEBUG
	Cmd_AddCommand("r_partinfo", P_PartInfo_f);
	Cmd_AddCommand("r_beaminfo", P_BeamInfo_f);
//#endif
}

void PScript_Shutdown (void)
{
	Cvar_SetCallback(&r_particledesc, NULL);

//	if (fallback)
//		fallback->ShutdownParticles();

	pe_default			= P_INVALID;
	pe_size2			= P_INVALID;
	pe_size3			= P_INVALID;
	pe_defaulttrail		= P_INVALID;

	while(loadedconfigs)
	{
		pcfg_t *cfg;
		cfg = loadedconfigs;
		loadedconfigs = cfg->next;
		Z_Free(cfg);
	}

	while (numparticletypes > 0)
	{
		numparticletypes--;
#if UNSUPPORTED
		if (part_type[numparticletypes].models)
			Z_Free(part_type[numparticletypes].models);
#endif
		if (part_type[numparticletypes].sounds)
			Z_Free(part_type[numparticletypes].sounds);
		if (part_type[numparticletypes].ramp)
			Z_Free(part_type[numparticletypes].ramp);
	}
	Z_Free (part_type);
	part_type = NULL;
	part_run_list = NULL;
//	fallback = NULL;

	Z_Free (particles);
	Z_Free (beams);
	Z_Free (decals);
	Z_Free (trailstates);

	free_particles = NULL;
	free_decals = NULL;
	free_beams = NULL;

	skytris = NULL;
	while(skytrimem)
	{
		void *f = skytrimem;
		skytrimem = skytrimem->next;
		Z_Free(f);
	}

	r_numparticles = 0;
	r_numdecals = 0;

	//FIXME: clear static ent trailstates, delta ent trailstates, beam trailstates
}

qboolean PScript_Startup (void)
{
	int newmaxp, newmaxd;

	newmaxp = r_part_maxparticles.value;
	if (newmaxp < 1)
		newmaxp = 1;
	if (newmaxp > MAX_PARTICLES)
		newmaxp = MAX_PARTICLES;
	newmaxd = r_part_maxdecals.value;
	if (newmaxd < 1)
		newmaxd = 1;
	if (newmaxd > MAX_DECALS)
		newmaxd = MAX_DECALS;

//	if (newmaxp != r_numparticles || newmaxd != r_numdecals)
//		PScript_Shutdown();

	if (!r_numparticles)	//already inited
	{
		r_numparticles = newmaxp;
		r_numdecals = newmaxd;

		buildsintable();

		r_numbeams = MAX_BEAMSEGS;
		r_numtrailstates = MAX_TRAILSTATES;

		particles = (particle_t *)Z_Malloc (r_numparticles * sizeof(particle_t));

		beams = (beamseg_t *)Z_Malloc (r_numbeams * sizeof(beamseg_t));

		decals = (clippeddecal_t *)Z_Malloc (r_numdecals * sizeof(clippeddecal_t));

		trailstates = (trailstate_t *)Z_Malloc (r_numtrailstates * sizeof(trailstate_t));
		memset(trailstates, 0, r_numtrailstates * sizeof(trailstate_t));
		ts_cycle = 0;

		Cvar_SetCallback(&r_particledesc, R_ParticleDesc_Callback);
	}
	r_particledesc.callback(&r_particledesc);

	return true;
}

void PScript_RecalculateSkyTris (void)
{
	skytris = NULL;
	while(skytrimem)
	{
		void *f = skytrimem;
		skytrimem = skytrimem->next;
		Z_Free(f);
	}

	if (cl.worldmodel && !cl.worldmodel->needload && cl.worldmodel->type == mod_brush)
	{
		qmodel_t *m = cl.worldmodel;
		int t;
		int i;
		int ptype;
		msurface_t *surf;
		char key[128];
		const char *data = COM_Parse(cl.worldmodel->entities);
		int *remaps;
		remaps = malloc(sizeof(*remaps)*m->numtextures);
		for (t = 0; t < m->numtextures; t++)
			remaps[t] = P_INVALID;

		//parse the worldspawn entity fields for "_texpart_FOO" keys to give texture "FOO" particles from the effect specified by the value
		if (data && com_token[0] == '{')
		{
			while (1)
			{
				data = COM_Parse(data);
				if (!data)
					break; // error
				if (com_token[0] == '}')
					break; // end of worldspawn
				if (com_token[0] == '_')
					strcpy(key, com_token + 1);
				else
					strcpy(key, com_token);
				while (key[strlen(key)-1] == ' ') // remove trailing spaces
					key[strlen(key)-1] = 0;
				data = COM_Parse(data);
				if (!data)
					break; // error
				if (!q_strncasecmp("texpart_", key, 8))
				{
					for (t = 0; t < m->numtextures; t++)
					{
						if (!q_strcasecmp(key+8, m->textures[t]->name))
							remaps[t] = PScript_FindParticleType(com_token);
					}
				}
			}
		}

		for (t = 0; t < m->numtextures; t++)
		{
			ptype = remaps[t];
			if (ptype == P_INVALID)
				ptype = PScript_FindParticleType(va("tex_%s", m->textures[t]->name));

			if (ptype >= 0)
			{
				for (i=0; i<m->nummodelsurfaces; i++)
				{
					surf = m->surfaces + i + m->firstmodelsurface;
					if (surf->texinfo->texture == m->textures[t])
					{
						/*FIXME: it would be a good idea to determine the surface's (midpoint) pvs cluster so that we're not spamming for the entire map*/
						PScript_EmitSkyEffectTris(m, surf, ptype);
					}
				}
			}
		}
		free(remaps);
	}
}
/*
===============
P_ClearParticles
===============
*/
void PScript_ClearParticles (void)
{
	int		i;

	PScript_Startup();

//	if (fallback)
//		fallback->ClearParticles();

	free_particles = &particles[0];
	for (i=0 ;i<r_numparticles ; i++)
		particles[i].next = &particles[i+1];
	particles[r_numparticles-1].next = NULL;

	free_decals = &decals[0];
	for (i=0 ;i<r_numdecals ; i++)
		decals[i].next = &decals[i+1];
	decals[r_numdecals-1].next = NULL;

	free_beams = &beams[0];
	for (i=0 ;i<r_numbeams ; i++)
	{
		beams[i].p = NULL;
		beams[i].flags = BS_DEAD;
		beams[i].next = &beams[i+1];
	}
	beams[r_numbeams-1].next = NULL;

	particletime = cl.time;

	for (i = 0; i < numparticletypes; i++)
	{
		P_LoadTexture(&part_type[i], false);
	}

	for (i = 0; i < numparticletypes; i++)
	{
		part_type[i].clippeddecals = NULL;
		part_type[i].particles = NULL;
		part_type[i].beams = NULL;
	}

	skytris = NULL;
	while(skytrimem)
	{
		void *f = skytrimem;
		skytrimem = skytrimem->next;
		Z_Free(f);
	}
	r_plooksdirty = true;
}

static qboolean P_LoadParticleSet(char *name, qboolean implicit)
{
	FILE *file;
	pcfg_t *cfg;

	if (!*name)
		return false;

	//protect against configs being loaded multiple times. this can easily happen with namespaces (especially if an effect is missing).
	for (cfg = loadedconfigs; cfg; cfg = cfg->next)
	{
		//already loaded?
		if (!strcmp(cfg->name, name))
			return false;
	}
	cfg = Z_Malloc(sizeof(*cfg) + strlen(name));
	strcpy(cfg->name, name);
	cfg->next = loadedconfigs;
	loadedconfigs = cfg;

	if (!strcmp(name, "classic"))
	{
#ifdef PSET_CLASSIC
		if (fallback)
			fallback->ShutdownParticles();
		fallback = &pe_classic;
		if (fallback)
		{
			fallback->InitParticles();
			fallback->ClearParticles();
		}
#endif
		return true;
	}

	COM_FOpenFile(va("particles/%s.cfg", name), &file, NULL);
	if (!file)
		COM_FOpenFile(va("%s.cfg", name), &file, NULL);
	if (file)
	{
		PScript_ParseParticleEffectFile(name, implicit, file);
		fclose(file);
	}
	else
	{
#ifdef PSET_SCRIPT_EFFECTINFO
		if (!strcmp(name, "effectinfo") || !strncmp(name, "effectinfo_", 11))
		{
			//FIXME: we're loading this too early to deal with per-map stuff.
			//FIXME: wait until after particle precache info has been received, and only reload if the loaded configs actually changed.
			P_ImportEffectInfo_Name(name);
			return true;
		}

		if (P_LoadParticleSet("high", true))
			Con_Printf(CON_WARNING "Couldn't find particle description %s, loading 'high' instead\n", name);
		else
#endif
		{
			Con_Printf(CON_WARNING "Couldn't find particle description %s\n", name);
			return false;
		}
	}
	return true;
}

static void R_Particles_KillAllEffects(void)
{
	int i;
	pcfg_t *cfg;

	for (i = 0; i < numparticletypes; i++)
	{
		*part_type[i].texname = '\0';
		part_type[i].scale = 0;
		part_type[i].loaded = 0;
		if (part_type->ramp)
			Z_Free(part_type->ramp);
		part_type->ramp = NULL;
		part_type->rampmode = RAMP_NONE;
	}

//	f_modified_particles = false;

/*	if (fallback)
	{
		fallback->ShutdownParticles();
		fallback = NULL;
	}
*/
	while(loadedconfigs)
	{
		cfg = loadedconfigs;
		loadedconfigs = cfg->next;
		Z_Free(cfg);
	}
}

static void R_ParticleDesc_Callback(struct cvar_s *var)
{
	const char *c;

	R_Particles_KillAllEffects();
	r_plooksdirty = true;

	for (c = var->string; (c=COM_Parse(c)); )
	{
		if (*com_token)
			P_LoadParticleSet(com_token, false);
	}

	//make sure nothing is stale.
	CL_RegisterParticles();
}

static void P_AddRainParticles(void)
{
	float x;
	float y;
	static float skipped;
	static float lastrendered;
	part_type_t *type;

	vec3_t org, vdist;

	skytris_t *st;

	if (!r_part_rain.value || !r_part_rain_quantity.value)
	{
		skipped = true;
		return;
	}

	if (lastrendered < particletime - 0.5)
		skipped = true;	//we've gone for half a sec without any new rain. This would cause some strange effects, so reset times.

	if (skipped)
	{
		for (st = skytris; st; st = st->next)
		{
			st->nexttime = particletime;
		}
	}
	skipped = false;

	lastrendered = particletime;

	for (st = skytris; st; st = st->next)
	{
		if (st->face->visframe != r_visframecount)
		{
			st->nexttime = particletime;
			continue;
		}

		if ((unsigned int)st->ptype >= (unsigned int)numparticletypes)
			continue;
		type = &part_type[st->ptype];
		if (!type->loaded)	//woo, batch skipping.
			continue;

		while (st->nexttime < particletime)
		{
			if (!free_particles)
				return;

			st->nexttime += 10000/(st->area*r_part_rain_quantity.value*type->rainfrequency);

			x = frandom()*frandom();
			y = frandom() * (1-x);
			VectorMA(st->org, x, st->x, org);
			VectorMA(org, y, st->y, org);


			VectorSubtract(org, r_refdef.vieworg, vdist);

			if (VectorLength(vdist) > (1024+512)*frandom())
				continue;

			if (st->face->flags & SURF_PLANEBACK)
				VectorMA(org, -0.5, st->face->plane->normal, org);
			else
				VectorMA(org, 0.5, st->face->plane->normal, org);

			if (!(CL_PointContentsMask(org) & FTECONTENTS_SOLID))	//should be paranoia
			{
				if (st->face->flags & SURF_PLANEBACK)
				{
					vdist[0] = -st->face->plane->normal[0];
					vdist[1] = -st->face->plane->normal[1];
					vdist[2] = -st->face->plane->normal[2];
					PScript_RunParticleEffectState(org, vdist, 1, st->ptype, NULL);
				}
				else
					PScript_RunParticleEffectState(org, st->face->plane->normal, 1, st->ptype, NULL);
			}
		}
	}
}

static void R_Part_SkyTri(float *v1, float *v2, float *v3, msurface_t *surf, int ptype)
{
	float dot;
	float xm;
	float ym;
	float theta;
	vec3_t xd;
	vec3_t yd;

	skytris_t *st;

	skytriblock_t *mem = skytrimem;
	if (!mem || mem->count == sizeof(mem->tris)/sizeof(mem->tris[0]))
	{
		skytrimem = Z_Malloc(sizeof(*skytrimem));
		skytrimem->next = mem;
		skytrimem->count = 0;
		mem = skytrimem;
	}

	st = &mem->tris[mem->count];
	VectorCopy(v1, st->org);
	VectorSubtract(v2, st->org, st->x);
	VectorSubtract(v3, st->org, st->y);

	VectorCopy(st->x, xd);
	VectorCopy(st->y, yd);
/*
	xd[2] = 0;	//prevent area from being valid on vertical surfaces
	yd[2] = 0;
*/
	xm = VectorLength(xd);
	ym = VectorLength(yd);

	dot = DotProduct(xd, yd);
	theta = acos(dot/(xm*ym));
	st->area = sin(theta)*xm*ym;
	st->nexttime = particletime;
	st->face = surf;
	st->ptype = ptype;

	if (st->area<=0)
		return;//bummer.
	mem->count++;

	st->next = skytris;
	skytris = st;
}



void PScript_EmitSkyEffectTris(qmodel_t *mod, msurface_t 	*fa, int ptype)
{
	vec3_t		verts[64];
	int v1;
	int v2;
	int v3;
	int numverts;
	int i, lindex;
	float *vec;

	if (ptype < 0 || ptype >= numparticletypes)
		return;

	//
	// convert edges back to a normal polygon
	//
	numverts = 0;
	for (i=0 ; i<fa->numedges ; i++)
	{
		lindex = mod->surfedges[fa->firstedge + i];

		if (lindex > 0)
			vec = mod->vertexes[mod->edges[lindex].v[0]].position;
		else
			vec = mod->vertexes[mod->edges[-lindex].v[1]].position;
		VectorCopy (vec, verts[numverts]);
		numverts++;

		if (numverts>=64)
		{
			Con_Printf("Too many verts on sky surface\n");
			return;
		}
	}

	v1 = 0;
	v2 = 1;
	for (v3 = 2; v3 < numverts; v3++)
	{
		R_Part_SkyTri(verts[v1], verts[v2], verts[v3], fa, ptype);

		v2 = v3;
	}
}

// Trailstate functions
static void P_CleanTrailstate(trailstate_t *ts)
{
	// clear LASTSEG flag from lastbeam so it can be reused
	if (ts->lastbeam)
	{
		ts->lastbeam->flags &= ~BS_LASTSEG;
		ts->lastbeam->flags |= BS_NODRAW;
	}

	// clean structure
	memset(ts, 0, sizeof(trailstate_t));
}

static void PScript_DelinkTrailstate(trailstate_t **tsk)
{
	trailstate_t *ts;
	trailstate_t *assoc;

	if (*tsk == NULL)
		return; // not linked to a trailstate

	ts = *tsk; // store old pointer
	*tsk = NULL; // clear pointer

	if (ts->key != tsk)
		return; // prevent overwrite

	assoc = ts->assoc; // store assoc
	P_CleanTrailstate(ts); // clean directly linked trailstate

	// clean trailstates assoc linked
	while (assoc)
	{
		ts = assoc->assoc;
		P_CleanTrailstate(assoc);
		assoc = ts;
	}
}

static trailstate_t *P_NewTrailstate(trailstate_t **key)
{
	trailstate_t *ts;

	// bounds check here in case r_numtrailstates changed
	if (ts_cycle >= r_numtrailstates)
		ts_cycle = 0;

	// get trailstate
	ts = trailstates + ts_cycle;

	// clear trailstate
	P_CleanTrailstate(ts);

	// set key
	ts->key = key;

	// advance index cycle
	ts_cycle++;

	// return clean trailstate
	return ts;
}

#define NUMVERTEXNORMALS	162
static float	r_avertexnormals[NUMVERTEXNORMALS][3] = {
#include "anorms.h"
};
static vec2_t	avelocities[NUMVERTEXNORMALS];
#define BEAMLENGTH 16
// vec3_t	avelocity = {23, 7, 3};
// float	partstep = 0.01;
// float	timescale = 0.01;


#if UNSUPPORTED
static void PScript_ApplyOrgVel(vec3_t oorg, vec3_t ovel, vec3_t eforg, vec3_t axis[3], int pno, int pmax, part_type_t *ptype)
{
	vec3_t ofsvec, arsvec;

	float k,l,m;
	int spawnspc, i=pno, j;


	l=0;
	j=0;
	k=0;
	m=0;

	spawnspc = 8;
	switch (ptype->spawnmode)
	{
	case SM_UNICIRCLE:
		m = pmax;
		if (ptype->looks.type == PT_BEAM)
			m--;

		if (m < 1)
			m = 0;
		else
			m = (M_PI*2)/m;

		if (ptype->spawnparam1) /* use for weird shape hacks */
			m *= ptype->spawnparam1;
		break;
	case SM_TELEBOX:
		spawnspc = 4;
		l = -ptype->areaspreadvert;
	case SM_LAVASPLASH:
		j = k = -ptype->areaspread;
		if (ptype->spawnparam1)
			m = ptype->spawnparam1;
		else
			m = 0.55752; /* default weird number for tele/lavasplash used in vanilla Q1 */

		if (ptype->spawnparam2)
			spawnspc = (int)ptype->spawnparam2;
		break;
	case SM_FIELD:
		if (!avelocities[0][0])
		{
			for (j=0 ; j<NUMVERTEXNORMALS ; j++)
			{
				avelocities[j][0] = (rand()&255) * 0.01;
				avelocities[j][1] = (rand()&255) * 0.01;
			}
		}

		j = pno%NUMVERTEXNORMALS;
		m = pno/NUMVERTEXNORMALS;
		break;
	default:	//others don't need intitialisation
		break;
	}


	ovel[0] = 0;
	ovel[1] = 0;
	ovel[2] = 0;

	// handle spawn modes (org/vel)
	switch (ptype->spawnmode)
	{
	case SM_BOX:
		ofsvec[0] = crandom();
		ofsvec[1] = crandom();
		ofsvec[2] = crandom();

		arsvec[0] = ofsvec[0]*ptype->areaspread;
		arsvec[1] = ofsvec[1]*ptype->areaspread;
		arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
		break;
	case SM_TELEBOX:
		ofsvec[0] = k;
		ofsvec[1] = j;
		ofsvec[2] = l+4;
		VectorNormalize(ofsvec);
		VectorScale(ofsvec, 1.0-(frandom())*m, ofsvec);

		// org is just like the original
		arsvec[0] = j + (rand()%spawnspc);
		arsvec[1] = k + (rand()%spawnspc);
		arsvec[2] = l + (rand()%spawnspc);

		// advance telebox loop
		j += spawnspc;
		if (j >= ptype->areaspread)
		{
			j = -ptype->areaspread;
			k += spawnspc;
			if (k >= ptype->areaspread)
			{
				k = -ptype->areaspread;
				l += spawnspc;
				if (l >= ptype->areaspreadvert)
					l = -ptype->areaspreadvert;
			}
		}
		break;
	case SM_LAVASPLASH:
		// calc directions, org with temp vector
		ofsvec[0] = k + (rand()%spawnspc);
		ofsvec[1] = j + (rand()%spawnspc);
		ofsvec[2] = 256;

		arsvec[0] = ofsvec[0];
		arsvec[1] = ofsvec[1];
		arsvec[2] = frandom()*ptype->areaspreadvert;

		VectorNormalize(ofsvec);
		VectorScale(ofsvec, 1.0-(frandom())*m, ofsvec);

		// advance splash loop
		j += spawnspc;
		if (j >= ptype->areaspread)
		{
			j = -ptype->areaspread;
			k += spawnspc;
			if (k >= ptype->areaspread)
				k = -ptype->areaspread;
		}
		break;
	case SM_UNICIRCLE:
		ofsvec[0] = cos(m*i);
		ofsvec[1] = sin(m*i);
		ofsvec[2] = 0;
		VectorScale(ofsvec, ptype->areaspread, arsvec);
		break;
	case SM_FIELD:
		arsvec[0] = (cl.time * avelocities[i][0]) + m;
		arsvec[1] = (cl.time * avelocities[i][1]) + m;
		arsvec[2] = cos(arsvec[1]);

		ofsvec[0] = arsvec[2]*cos(arsvec[0]);
		ofsvec[1] = arsvec[2]*sin(arsvec[0]);
		ofsvec[2] = -sin(arsvec[1]);

//		arsvec[0] = r_avertexnormals[j][0]*ptype->areaspread + ofsvec[0]*BEAMLENGTH;
//		arsvec[1] = r_avertexnormals[j][1]*ptype->areaspread + ofsvec[1]*BEAMLENGTH;
//		arsvec[2] = r_avertexnormals[j][2]*ptype->areaspreadvert + ofsvec[2]*BEAMLENGTH;

		l = ptype->spawnparam2 * sin(cl.time+j+m);
		arsvec[0] = r_avertexnormals[j][0]*(ptype->areaspread+l) + ofsvec[0]*ptype->spawnparam1;
		arsvec[1] = r_avertexnormals[j][1]*(ptype->areaspread+l) + ofsvec[1]*ptype->spawnparam1;
		arsvec[2] = r_avertexnormals[j][2]*(ptype->areaspreadvert+l) + ofsvec[2]*ptype->spawnparam1;

		VectorNormalize(ofsvec);

		j++;
		if (j >= NUMVERTEXNORMALS)
		{
			j = 0;
			m += 0.1762891; // some BS number to try to "randomize" things
		}
		break;
	case SM_DISTBALL:
		{
			float rdist;

			rdist = ptype->spawnparam2 - crandom()*(1-(crandom() * ptype->spawnparam1));

			// this is a strange spawntype, which is based on the fact that
			// crandom()*crandom() provides something similar to an exponential
			// probability curve
			ofsvec[0] = hrandom();
			ofsvec[1] = hrandom();
			if (ptype->areaspreadvert)
				ofsvec[2] = hrandom();
			else
				ofsvec[2] = 0;

			VectorNormalize(ofsvec);
			VectorScale(ofsvec, rdist, ofsvec);

			arsvec[0] = ofsvec[0]*ptype->areaspread;
			arsvec[1] = ofsvec[1]*ptype->areaspread;
			arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
		}
		break;
	default: // SM_BALL, SM_CIRCLE
		ofsvec[0] = hrandom();
		ofsvec[1] = hrandom();
		if (ptype->areaspreadvert)
			ofsvec[2] = hrandom();
		else
			ofsvec[2] = 0;

		VectorNormalize(ofsvec);
		if (ptype->spawnmode != SM_CIRCLE)
			VectorScale(ofsvec, frandom(), ofsvec);

		arsvec[0] = ofsvec[0]*ptype->areaspread;
		arsvec[1] = ofsvec[1]*ptype->areaspread;
		arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
		break;
	}

	k = ptype->orgadd + frandom()*ptype->randomorgadd;
	l = ptype->veladd + frandom()*ptype->randomveladd;

#if 1
	VectorMA(ovel, ofsvec[0]*ptype->spawnvel, axis[0], ovel);
	VectorMA(ovel, ofsvec[1]*ptype->spawnvel, axis[1], ovel);
	VectorMA(ovel, l+ofsvec[2]*ptype->spawnvelvert, axis[2], ovel);

	VectorMA(eforg, arsvec[0], axis[0], oorg);
	VectorMA(oorg, arsvec[1], axis[1], oorg);
	VectorMA(oorg, k+arsvec[2], axis[2], oorg);
#else
	oorg[0] = eforg[0] + arsvec[0];
	oorg[1] = eforg[1] + arsvec[1];
	oorg[2] = eforg[2] + arsvec[2];

	// apply arsvec+ofsvec
	if (efdir)
	{
		ovel[0] += efdir[0]*l+ofsvec[0]*ptype->spawnvel;
		ovel[1] += efdir[1]*l+ofsvec[1]*ptype->spawnvel;
		ovel[2] += efdir[2]*l+ofsvec[2]*ptype->spawnvelvert;

		oorg[0] += efdir[0]*k;
		oorg[1] += efdir[1]*k;
		oorg[2] += efdir[2]*k;
	}
	else
	{//efdir is effectively up - '0 0 -1'
		ovel[0] += ofsvec[0]*ptype->spawnvel;
		ovel[1] += ofsvec[1]*ptype->spawnvel;
		ovel[2] += ofsvec[2]*ptype->spawnvelvert - l;

		oorg[2] -= k;
	}
#endif

	if (ptype->flags & PT_WORLDSPACERAND)
	{
		do
		{
			ofsvec[0] = crand();
			ofsvec[1] = crand();
			ofsvec[2] = crand();
		} while(DotProduct(ofsvec,ofsvec)>1);	//crap, but I'm trying to mimic dp
		oorg[0] += ofsvec[0] * ptype->orgwrand[0];
		oorg[1] += ofsvec[1] * ptype->orgwrand[1];
		oorg[2] += ofsvec[2] * ptype->orgwrand[2];
		ovel[0] += ofsvec[0] * ptype->velwrand[0];
		ovel[1] += ofsvec[1] * ptype->velwrand[1];
		ovel[2] += ofsvec[2] * ptype->velwrand[2];
		VectorAdd(ovel, ptype->velbias, ovel);
	}

	VectorAdd(oorg, ptype->orgbias, oorg);
}
#endif

static void PScript_EffectSpawned(part_type_t *ptype, vec3_t org, vec3_t axis[3], int dlkey, float countscale)
{
#if UNSUPPORTED
	if (ptype->nummodels)
	{
		int count = ptype->countextra + countscale*(ptype->count+ptype->countrand*frandom());
		int i;
		partmodels_t *mod;
		if (!ptype->countextra && !ptype->count)
			count = countscale;
		for (i = 0; i < count; i++)
		{
			mod = &ptype->models[rand() % ptype->nummodels];
			if (!mod->model)
				mod->model = Mod_ForName(mod->name, false);
			if (mod->model)
			{
				vec3_t morg, mdir;
				float scale = frandom() * (mod->scalemax-mod->scalemin) + mod->scalemin;
				PScript_ApplyOrgVel(morg, mdir, org, axis, i, count, ptype);
				CL_SpawnSpriteEffect(morg, mdir, (mod->rflags&RF_USEORIENTATION)?axis[2]:NULL, mod->model, mod->framestart, mod->framecount, mod->framerate?mod->framerate:10, mod->alpha?mod->alpha:1, scale, ptype->rotationmin*180/M_PI, ptype->gravity, mod->traileffect, mod->rflags & ~RF_USEORIENTATION, mod->skin);
			}
		}
	}
#endif
	if (ptype->dl_radius[0] || ptype->dl_radius[1])// && r_rocketlight.value)
	{
		float radius;
		dlight_t *dl;

		static int flickertime;
		static int flicker;
		int i = realtime*20;
		if (flickertime != i)
		{
			flickertime = i;
			flicker = rand();
		}
		radius = ptype->dl_radius[0] + (r_lightflicker.value?((flicker + dlkey*2000)&0xffff)*(1.0f/0xffff):0.5)*ptype->dl_radius[1];

#if 1 //qs
		dl = CL_AllocDlight (dlkey);
		VectorCopy (org,  dl->origin);
		dl->radius = radius;
		dl->minlight = 0;
		dl->die = cl.time + ptype->dl_time;
		dl->decay = ptype->dl_decay[3];
		VectorCopy(ptype->dl_rgb, dl->color);
		//FIXME: no rgb decay
		//FIXME: rtlights... *cough*
#else //orig fte code
		dl = CL_NewDlight(dlkey, org, radius, ptype->dl_time, ptype->dl_rgb[0], ptype->dl_rgb[1], ptype->dl_rgb[2]);
		dl->channelfade[0]	= ptype->dl_decay[0];
		dl->channelfade[1]	= ptype->dl_decay[1];
		dl->channelfade[2]	= ptype->dl_decay[2];
		dl->decay			= ptype->dl_decay[3];
		dl->corona			= ptype->dl_corona_intensity;
		dl->coronascale		= ptype->dl_corona_scale;
#ifdef RTLIGHTS
		dl->lightcolourscales[0] = ptype->dl_scales[0];
		dl->lightcolourscales[1] = ptype->dl_scales[1];
		dl->lightcolourscales[2] = ptype->dl_scales[2];
#endif
		if (ptype->flags & PT_NODLSHADOW)
			dl->flags |= LFLAG_NOSHADOWS;
		if (ptype->dl_cubemapnum)
			Q_snprintfz(dl->cubemapname, sizeof(dl->cubemapname), "cubemaps/%i", ptype->dl_cubemapnum);
#endif
	}
	if (ptype->numsounds)
	{
		int i;
		float w,tw;
		for (i = 0, tw = 0; i < ptype->numsounds; i++)
			tw += ptype->sounds[i].weight;
		w = frandom() * tw;	//select the sound by weight
		//and figure out which one that weight corresponds to
		for (i = 0, tw = 0; i < ptype->numsounds; i++)
		{
			tw += ptype->sounds[i].weight;
			if (w <= tw)
			{
				if (*ptype->sounds[i].name && ptype->sounds[i].vol > 0)
				{	//FIXME: no delay, no pitch
					S_StartSound(0, 0, S_PrecacheSound(ptype->sounds[i].name), org, ptype->sounds[i].vol, ptype->sounds[i].atten);
				}
				break;
			}
		}
	}
#if UNSUPPORTED
	if (ptype->stain_radius)
		Surf_AddStain(org, ptype->stain_rgb[0], ptype->stain_rgb[1], ptype->stain_rgb[2], ptype->stain_radius);
#endif
}

#ifdef USE_DECALS
void PerpendicularVector( vec3_t dst, const vec3_t src );
#define DEG2RAD( a ) ( (a) * M_PI_DIV_180 )
static void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees )
{
	float	m[3][3];
	float	im[3][3];
	float	zrot[3][3];
	float	tmpmat[3][3];
	float	rot[3][3];
	int	i;
	vec3_t vr, vup, vf;

	vf[0] = dir[0];
	vf[1] = dir[1];
	vf[2] = dir[2];

	PerpendicularVector( vr, dir );
	CrossProduct( vr, vf, vup );

	m[0][0] = vr[0];
	m[1][0] = vr[1];
	m[2][0] = vr[2];

	m[0][1] = vup[0];
	m[1][1] = vup[1];
	m[2][1] = vup[2];

	m[0][2] = vf[0];
	m[1][2] = vf[1];
	m[2][2] = vf[2];

	memcpy( im, m, sizeof( im ) );

	im[0][1] = m[1][0];
	im[0][2] = m[2][0];
	im[1][0] = m[0][1];
	im[1][2] = m[2][1];
	im[2][0] = m[0][2];
	im[2][1] = m[1][2];

	memset( zrot, 0, sizeof( zrot ) );
	zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F;

	zrot[0][0] = cos( DEG2RAD( degrees ) );
	zrot[0][1] = sin( DEG2RAD( degrees ) );
	zrot[1][0] = -sin( DEG2RAD( degrees ) );
	zrot[1][1] = cos( DEG2RAD( degrees ) );

	R_ConcatRotations( m, zrot, tmpmat );
	R_ConcatRotations( tmpmat, im, rot );

	for ( i = 0; i < 3; i++ )
	{
		dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2];
	}
}

typedef struct
{
	part_type_t *ptype;
	int entity;
	qmodel_t *model;
	vec3_t center;
	vec3_t normal;
	vec3_t tangent1;
	vec3_t tangent2;

	float scale0;
	float scale1;
	float scale2;

	float bias1;
	float bias2;
} decalctx_t;
static void PScript_AddDecals(void *vctx, vec3_t *points, size_t numtris)
{
	decalctx_t *ctx = vctx;
	part_type_t *ptype = ctx->ptype;
	clippeddecal_t *d;
	unsigned int i;
	vec3_t vec;
	byte *palrgba = (byte *)d_8to24table;
	while(numtris-->0)
	{
		if (!free_decals)
			break;

		d = free_decals;
		free_decals = d->next;
		d->next = ptype->clippeddecals;
		ptype->clippeddecals = d;

		for (i = 0; i < 3; i++)
		{
			VectorCopy(points[i], d->vertex[i]);
			VectorSubtract(d->vertex[i], ctx->center, vec);
			d->texcoords[i][0] = (DotProduct(vec, ctx->tangent1)*ctx->scale1)+ctx->bias1;
			d->texcoords[i][1] = (DotProduct(vec, ctx->tangent2)*ctx->scale2)+ctx->bias2;
			if (r_decal_noperpendicular.value)
			{
				//the decal code is already making sure the surfaces are mostly aligned, which should solve some issues.
				//this means we can make sure that there's NO fading at all, so no issues if the center of the effect is not actually aligned with any surface (yay inprecision).
				d->valpha[i] = 1;
			}
			else
			{
				//fade the alpha depending on the distance from the center)
				//FIXME: should be fabsed by glsl so that linear interpolation works correctly
				d->valpha[i] = 1 - fabs((DotProduct(vec, ctx->normal)*ctx->scale0));
			}
		}
		points += 3;

		d->entity = ctx->entity;
		d->model = ctx->model;
		d->die = ptype->randdie*frandom();

		if (ptype->die)
			d->rgba[3] = ptype->alpha + d->die*ptype->alphachange;
		else
			d->rgba[3] = ptype->alpha;
		d->rgba[3] += ptype->alpharand*frandom();

		if (ptype->colorindex >= 0)
		{
			int cidx;
			cidx = ptype->colorrand > 0 ? rand() % ptype->colorrand : 0;
			cidx = ptype->colorindex + cidx;
			if (cidx > 255)
				d->rgba[3] = d->rgba[3] / 2; // Hexen 2 style transparency
			cidx = (cidx & 0xff) * 4;
			d->rgba[0] = palrgba[cidx] * (1/255.0);
			d->rgba[1] = palrgba[cidx+1] * (1/255.0);
			d->rgba[2] = palrgba[cidx+2] * (1/255.0);
		}
		else
			VectorCopy(ptype->rgb, d->rgba);

		vec[2] = frandom();
		vec[0] = vec[2]*ptype->rgbrandsync[0] + frandom()*(1-ptype->rgbrandsync[0]);
		vec[1] = vec[2]*ptype->rgbrandsync[1] + frandom()*(1-ptype->rgbrandsync[1]);
		vec[2] = vec[2]*ptype->rgbrandsync[2] + frandom()*(1-ptype->rgbrandsync[2]);
		d->rgba[0] += vec[0]*ptype->rgbrand[0] + ptype->rgbchange[0]*d->die;
		d->rgba[1] += vec[1]*ptype->rgbrand[1] + ptype->rgbchange[1]*d->die;
		d->rgba[2] += vec[2]*ptype->rgbrand[2] + ptype->rgbchange[2]*d->die;

		d->die = particletime + ptype->die - d->die;

		if (ptype->looks.type != PT_CDECAL)
			d->die += 20;

		// maintain run list
		if (!(ptype->state & PS_INRUNLIST))
		{
			ptype->nexttorun = part_run_list;
			part_run_list = ptype;
			ptype->state |= PS_INRUNLIST;
		}
	}
}


typedef struct fragmentdecal_s fragmentdecal_t;
static void Mod_ClipDecal(qmodel_t *mod, vec3_t center, vec3_t normal, vec3_t tangent1, vec3_t tangent2, float size, unsigned int surfflagmask, unsigned int surfflagmatch, void (*callback)(void *ctx, vec3_t *points, size_t numpoints), void *ctx);

//clipped decals actually work by defining the area of the decal with some planes, and then chopping away the entirety of the world based upon those planes (hurrah for bsp to trivially reject most of it)
//the decal is then textured according to some texture projection.
#define MAXFRAGMENTVERTS (128*3)
struct fragmentdecal_s
{
	vec3_t center;

	vec3_t normal;
	vec3_t planenorm[6];
	float planedist[6];
	int numplanes;

	vec_t radius;

	//will only appear on surfaces with the matching surfaceflag
	unsigned int surfflagmask;
	unsigned int surfflagmatch;

	void (*callback)(void *ctx, vec3_t *points, size_t numpoints);
	void *ctx;
};
static int Fragment_ClipPolyToPlane(vec3_t *inverts, vec3_t *outverts, int incount, float *plane, float planedist)
{
	float dotv[MAXFRAGMENTVERTS+1];
	char keep[MAXFRAGMENTVERTS+1];
#define KEEP_KILL 0
#define KEEP_KEEP 1
#define KEEP_BORDER 2
	int i;
	int outcount = 0;
	int clippedcount = 0;
	float d;
	float *p1, *p2;
	float *out;
#define FRAG_EPSILON (1.0/32) //0.5

	for (i = 0; i < incount; i++)
	{
		dotv[i] = DotProduct(inverts[i], plane) - planedist;
		if (dotv[i]<-FRAG_EPSILON)
		{
			keep[i] = KEEP_KILL;
			clippedcount++;
		}
		else if (dotv[i] > FRAG_EPSILON)
			keep[i] = KEEP_KEEP;
		else
			keep[i] = KEEP_BORDER;
	}
	dotv[i] = dotv[0];
	keep[i] = keep[0];

	if (clippedcount == incount)
		return 0;	//all were clipped
	if (clippedcount == 0)
	{	//none were clipped
		for (i = 0; i < incount; i++)
			VectorCopy(inverts[i], outverts[i]);
		return incount;
	}

	for (i = 0; i < incount; i++)
	{
		p1 = inverts[i];
		if (keep[i] == KEEP_BORDER)
		{
			out = outverts[outcount++];
			VectorCopy(p1, out);
			continue;
		}
		if (keep[i] == KEEP_KEEP)
		{
			out = outverts[outcount++];
			VectorCopy(p1, out);
		}
		if (keep[i+1] == KEEP_BORDER || keep[i] == keep[i+1])
			continue;
		p2 = inverts[(i+1)%incount];
		d = dotv[i] - dotv[i+1];
		if (d)
			d = dotv[i] / d;

		out = outverts[outcount++];
		VectorInterpolate(p1, d, p2, out);
	}
	return outcount;
}
static void Fragment_ClipPoly(fragmentdecal_t *dec, int numverts, vec3_t *inverts)
{
	//emit the triangle, and clip it's fragments.
	int p;
	vec3_t verts[2][MAXFRAGMENTVERTS];
	vec3_t decalfragmentverts[MAXFRAGMENTVERTS];
	int flip;
	vec3_t d1, d2, n;
	size_t numtris;

	if (numverts > MAXFRAGMENTVERTS)
		return;

	if (r_decal_noperpendicular.value)
	{
		VectorSubtract(inverts[1], inverts[0], d1);
		for (p = 2; ; p++)
		{
			if (p >= numverts)
				return;
			VectorSubtract(inverts[p], inverts[0], d2);
			CrossProduct(d1, d2, n);
			if (DotProduct(n,n)>.1)
				break;
		}
		VectorNormalizeFast(n);
		if (DotProduct(n, dec->normal) < 0.1)
			return;	//faces too far way from the normal
	}

	flip = 0;
	//clip to the first plane specially, so we don't have extra copys
	numverts = Fragment_ClipPolyToPlane(inverts, verts[flip], numverts, dec->planenorm[0], dec->planedist[0]);

	if (numverts < 3)	//totally clipped.
		return;

	//clip the polygon to the 6 planes.
	for (p = 1; p < dec->numplanes; p++)
	{
		numverts = Fragment_ClipPolyToPlane(verts[flip], verts[flip^1], numverts, dec->planenorm[p], dec->planedist[p]);
		flip^=1;

		if (numverts < 3)	//totally clipped.
			return;
	}

	//decompose the resulting polygon into triangles.

	numtris = 0;
	while(numverts-->2)
	{
		if (numtris+3 > MAXFRAGMENTVERTS)
		{
			dec->callback(dec->ctx, decalfragmentverts, numtris);
			numtris = 0;
			break;
		}

		VectorCopy(verts[flip][0],			decalfragmentverts[numtris*3+0]);
		VectorCopy(verts[flip][numverts-1],	decalfragmentverts[numtris*3+1]);
		VectorCopy(verts[flip][numverts],	decalfragmentverts[numtris*3+2]);
		numtris++;
	}
	if (numtris)
		dec->callback(dec->ctx, decalfragmentverts, numtris);
}
//this could be inlined, but I'm lazy.
static void Q1BSP_Fragment_Surface (fragmentdecal_t *dec, msurface_t *surf)
{
	int i;
	vec3_t verts[MAXFRAGMENTVERTS];
	glpoly_t *poly;

#if 0
	//fixme: proper shader-based rejection
	//dec->surfflagmask;
	//dec->surfflagmatch;
#else
	//water and sky should not get decals.
	if (surf->flags & (SURF_DRAWSKY|SURF_DRAWTURB))
		return;
#endif

	for (poly = surf->polys; poly; poly = poly->next)
	{
		if (poly->numverts > MAXFRAGMENTVERTS)
			continue;

		for (i = 0; i < poly->numverts; i++)
			VectorCopy(poly->verts[i], verts[i]);
		Fragment_ClipPoly(dec, i, verts);
	}
}
static void Q1BSP_ClipDecalToNodes (qmodel_t *mod, fragmentdecal_t *dec, mnode_t *node)
{
	mplane_t		*splitplane;
	float			dist;
	msurface_t		*surf;
	unsigned int	i;

	if (node->contents < 0)
		return;

	splitplane = node->plane;
	dist = DotProduct (dec->center, splitplane->normal) - splitplane->dist;

	if (dist > dec->radius)
	{
		Q1BSP_ClipDecalToNodes (mod, dec, node->children[0]);
		return;
	}
	if (dist < -dec->radius)
	{
		Q1BSP_ClipDecalToNodes (mod, dec, node->children[1]);
		return;
	}

// mark the polygons
	surf = mod->surfaces + node->firstsurface;
	if (r_decal_noperpendicular.value)
	{
		for (i=0 ; i<node->numsurfaces ; i++, surf++)
		{
			if (surf->flags & SURF_PLANEBACK)
			{
				if (-DotProduct(surf->plane->normal, dec->normal) > -0.5)
					continue;
			}
			else
			{
				if (DotProduct(surf->plane->normal, dec->normal) > -0.5)
					continue;
			}
			Q1BSP_Fragment_Surface(dec, surf);
		}
	}
	else
	{
		for (i=0 ; i<node->numsurfaces ; i++, surf++)
			Q1BSP_Fragment_Surface(dec, surf);
	}

	Q1BSP_ClipDecalToNodes (mod, dec, node->children[0]);
	Q1BSP_ClipDecalToNodes (mod, dec, node->children[1]);
}


static void Mod_ClipDecal(qmodel_t *mod, vec3_t center, vec3_t normal, vec3_t tangent1, vec3_t tangent2, float size, unsigned int surfflagmask, unsigned int surfflagmatch, void (*callback)(void *ctx, vec3_t *points, size_t numpoints), void *ctx)
{	//quad marks a full, independant quad
	int p;
	float r;
	fragmentdecal_t dec;

	VectorCopy(center, dec.center);
	VectorCopy(normal, dec.normal);
	dec.radius = 0;
	dec.callback = callback;
	dec.ctx = ctx;
	dec.surfflagmask = surfflagmask;
	dec.surfflagmatch = surfflagmatch;

	VectorCopy(tangent1,	dec.planenorm[0]);
	VectorScale(tangent1,	-1, dec.planenorm[1]);
	VectorCopy(tangent2,	dec.planenorm[2]);
	VectorScale(tangent2,	-1, dec.planenorm[3]);
	VectorCopy(dec.normal,		dec.planenorm[4]);
	VectorScale(dec.normal,	-1, dec.planenorm[5]);
	for (p = 0; p < 6; p++)
	{
		r = sqrt(DotProduct(dec.planenorm[p], dec.planenorm[p]));
		VectorScale(dec.planenorm[p], 1/r, dec.planenorm[p]);
		r*= size/2;
		if (r > dec.radius)
			dec.radius = r;
		dec.planedist[p] = -(r - DotProduct(dec.center, dec.planenorm[p]));
	}
	dec.numplanes = 6;

	if (mod && !mod->needload && mod->type == mod_brush)
		Q1BSP_ClipDecalToNodes(mod, &dec, mod->nodes + mod->hulls[0].firstclipnode);
}
#endif

int PScript_RunParticleEffectState (vec3_t org, vec3_t dir, float count, int typenum, trailstate_t **tsk)
{
	part_type_t *ptype = &part_type[typenum];
	int i, j, k, l, spawnspc;
	float m, pcount;//, orgadd, veladd;
	vec3_t axis[3]={{1,0,0},{0,1,0},{0,0,-1}};
	particle_t	*p;
	beamseg_t *b, *bfirst;
	vec3_t ofsvec, arsvec; // offsetspread vec, areaspread vec

	float orgadd, veladd;
	trailstate_t *ts;
	byte *palrgba = (byte *)d_8to24table;

//	if (typenum >= FALLBACKBIAS && fallback)
//		return fallback->RunParticleEffectState(org, dir, count, typenum-FALLBACKBIAS, NULL);

	if (typenum < 0 || typenum >= numparticletypes)
		return 1;

	if (!ptype->loaded)
		return 1;

	// inwater check, switch only once
	if (r_part_contentswitch.value && ptype->inwater >= 0 && cl.worldmodel)
	{
		unsigned int cont;
		cont = CL_PointContentsMask(org);

		if (cont & FTECONTENTS_FLUID)
			ptype = &part_type[ptype->inwater];
	}

	// eliminate trailstate if flag set
	if (ptype->flags & PT_NOSTATE)
		tsk = NULL;

	// trailstate allocation/deallocation
	if (tsk)
	{
		// if *tsk = NULL get a new one
		if (*tsk == NULL)
		{
			ts = P_NewTrailstate(tsk);
			*tsk = ts;
		}
		else
		{
			ts = *tsk;

			if (ts->key != tsk) // trailstate was overwritten
			{
				ts = P_NewTrailstate(tsk); // so get a new one
				*tsk = ts;
			}
		}
	}
	else
		ts = NULL;

	// get msvc to shut up
	j = k = l = 0;
	m = 0;

	while(ptype)
	{
		if (r_part_contentswitch.value && (ptype->flags & (PT_TRUNDERWATER | PT_TROVERWATER)) && cl.worldmodel)
		{
			unsigned int cont;
			cont = CL_PointContentsMask(org);

			if ((ptype->flags & PT_TROVERWATER) && (cont & ptype->fluidmask))
				goto skip;
			if ((ptype->flags & PT_TRUNDERWATER) && !(cont & ptype->fluidmask))
				goto skip;
		}

		if (dir && (dir[0] || dir[1] || dir[2]))
		{
			void PerpendicularVector( vec3_t dst, const vec3_t src );
			VectorCopy(dir, axis[2]);
			VectorNormalize(axis[2]);
			PerpendicularVector(axis[0], axis[2]);
			VectorNormalize(axis[0]);
			CrossProduct(axis[2], axis[0], axis[1]);
			VectorNormalize(axis[1]);
		}
		PScript_EffectSpawned(ptype, org, axis, 0, count);

		if (ptype->looks.type == PT_CDECAL)
		{
#ifdef USE_DECALS
			vec3_t vec={0.5, 0.5, 0.5};
			int i;
			decalctx_t ctx;
			vec3_t bestdir;
			vec3_t start, end;

			if (!free_decals)
				return 0;

			ctx.entity = 0;

			VectorCopy(org, ctx.center);
			if (!dir || (dir[0] == 0 && dir[1] == 0 && dir[2] == 0))
			{
				float bestfrac = 1;
				float frac;
				vec3_t impact, normal;
				int what;
				bestdir[0] = 0;
				bestdir[1] = 0.73;
				bestdir[2] = 0.73;
				VectorNormalize(bestdir);
				for (i = 0; i < 6; i++)
				{
					if (i >= 3)
					{
						end[0] = (i==3)*16;
						end[1] = (i==4)*16;
						end[2] = (i==5)*16;
					}
					else
					{
						end[0] = -(i==0)*16;
						end[1] = -(i==1)*16;
						end[2] = -(i==2)*16;
					}
					VectorSubtract(org, end, start);
					VectorAdd(org, end, end);


					frac = CL_TraceLine(start, end, impact, normal, &what);
					if (bestfrac > frac)
					{
						bestfrac = frac;
						VectorCopy(normal, bestdir);
						VectorCopy(impact, ctx.center);
						ctx.entity = what;
					}
				}
				dir = bestdir;
			}
			else
			{	//try to get it exactly on the plane, otherwise network or collision inprecisions can leave us further away from the surface than the radius of the decal
				VectorSubtract(org, dir, start);
				VectorAdd(org, dir, end);
				CL_TraceLine(start, end, ctx.center, bestdir, &ctx.entity);
			}
			if (ctx.entity)
			{
				entity_t *ent = CL_EntityNum(ctx.entity);
				if (ent->model)	//looks like its active.
				{
					ctx.model = ent->model;
					//FIXME: rotate normal
					VectorSubtract(ctx.center, ent->origin, ctx.center);
				}
				else
				{
					ctx.entity = 0;
					ctx.model = cl.worldmodel;
				}
			}
			else
			{
				ctx.entity = 0;
				ctx.model = cl.worldmodel;
			}
			if (!ctx.model)
				return 0;

			VectorScale(dir, -1, ctx.normal);
			VectorNormalize(ctx.normal);

			//we know the normal now. pick two random tangents.
			VectorNormalize(vec);
			CrossProduct(ctx.normal, vec, ctx.tangent1);
			RotatePointAroundVector(ctx.tangent2, ctx.normal, ctx.tangent1, frandom()*360);
			CrossProduct(ctx.normal, ctx.tangent2, ctx.tangent1);

			VectorNormalize(ctx.tangent1);
			VectorNormalize(ctx.tangent2);

			ctx.ptype = ptype;
			ctx.scale1 = ptype->s2 - ptype->s1;
			ctx.bias1 = ptype->s1 + ctx.scale1/2;
			ctx.scale2 = ptype->t2 - ptype->t1;
			ctx.bias2 = ptype->t1 + ctx.scale2/2;
			m = ptype->scale + frandom() * ptype->scalerand;
			ctx.scale0 = 2.0 / m;
			ctx.scale1 /= m;
			ctx.scale2 /= m;

			//inserts decals through a callback.
			Mod_ClipDecal(ctx.model, ctx.center, ctx.normal, ctx.tangent2, ctx.tangent1, m, ptype->surfflagmask, ptype->surfflagmatch, PScript_AddDecals, &ctx);
#endif
			if (ptype->assoc < 0)
				break;
			ptype = &part_type[ptype->assoc];
			continue;
		}
		// init spawn specific variables
		b = bfirst = NULL;
		spawnspc = 8;
		pcount = ptype->countextra + r_part_density.value*count*(ptype->count+ptype->countrand*frandom());
		if (ptype->flags & PT_INVFRAMETIME)
			pcount /= host_frametime;
		if (ts)
			pcount += ts->state2.emittime;

		switch (ptype->spawnmode)
		{
		case SM_UNICIRCLE:
			m = pcount;
			if (ptype->looks.type == PT_BEAM)
				m--;

			if (m < 1)
				m = 0;
			else
				m = (M_PI*2)/m;

			if (ptype->spawnparam1) /* use for weird shape hacks */
				m *= ptype->spawnparam1;
			break;
		case SM_TELEBOX:
			spawnspc = 4;
			l = -ptype->areaspreadvert;
		case SM_LAVASPLASH:
			j = k = -ptype->areaspread;
			if (ptype->spawnparam1)
				m = ptype->spawnparam1;
			else
				m = 0.55752; /* default weird number for tele/lavasplash used in vanilla Q1 */

			if (ptype->spawnparam2)
				spawnspc = (int)ptype->spawnparam2;
			break;
		case SM_FIELD:
			if (!avelocities[0][0])
			{
				for (j=0 ; j<NUMVERTEXNORMALS ; j++)
				{
					avelocities[j][0] = (rand()&255) * 0.01;
					avelocities[j][1] = (rand()&255) * 0.01;
				}
			}

			j = 0;
			m = 0;
			break;
//		case SM_MESHSURFACE:
//			meshsurface = querymesh;
//			totalarea = gah;
//			density = count / totalarea;
//			area = 0;
//			tri = -1;
//			break;
		default:	//others don't need intitialisation
			break;
		}

		// time limit (for completeness)
		if (ptype->spawntime && ts)
		{
			if (ts->state1.statetime > particletime)
				return 0; // timelimit still in effect

			ts->state1.statetime = particletime + ptype->spawntime; // record old time
		}

		// random chance for point effects
		if (ptype->spawnchance < frandom())
		{
			i = ceil(pcount);
			break;
		}

		/*this is a hack, use countextra=1, count=0*/
		if (!ptype->die && ptype->count == 1 && ptype->countrand == 0 && pcount < 1)
			pcount = 1;

		// particle spawning loop
		for (i = 0; i < pcount; i++)
		{
			if (!free_particles)
				break;
			p = free_particles;
			if (ptype->looks.type == PT_BEAM)
			{
				if (!free_beams)
					break;
				if (b)
				{
					b = b->next = free_beams;
					free_beams = free_beams->next;
				}
				else
				{
					b = bfirst = free_beams;
					free_beams = free_beams->next;
				}
				b->texture_s = i; // TODO: FIX THIS NUMBER
				b->flags = 0;
				b->p = p;
				VectorClear(b->dir);
			}
			free_particles = p->next;
			p->next = ptype->particles;
			ptype->particles = p;

			p->die = ptype->randdie*frandom();
			p->scale = ptype->scale+ptype->scalerand*frandom();
			if (ptype->die)
				p->rgba[3] = ptype->alpha+p->die*ptype->alphachange;
			else
				p->rgba[3] = ptype->alpha;
			p->rgba[3] += ptype->alpharand*frandom();
			// p->color = 0;
			if (ptype->emittime < 0)
				p->state.trailstate = NULL;
			else
				p->state.nextemit = particletime + ptype->emitstart - p->die;

			p->rotationspeed = ptype->rotationmin + frandom()*ptype->rotationrand;
			p->angle = ptype->rotationstartmin + frandom()*ptype->rotationstartrand;
			p->s1 = ptype->s1;
			p->t1 = ptype->t1;
			p->s2 = ptype->s2;
			p->t2 = ptype->t2;
			if (ptype->randsmax!=1)
			{
				m = ptype->texsstride * (rand()%ptype->randsmax);
				p->s1 += m;
				p->s2 += m;
			}

			if (ptype->colorindex >= 0)
			{
				int cidx;
				cidx = ptype->colorrand > 0 ? rand() % ptype->colorrand : 0;
				cidx = ptype->colorindex + cidx;
				if (cidx > 255)
					p->rgba[3] = p->rgba[3] / 2; // Hexen 2 style transparency
				cidx = (cidx & 0xff) * 4;
				p->rgba[0] = palrgba[cidx] * (1/255.0);
				p->rgba[1] = palrgba[cidx+1] * (1/255.0);
				p->rgba[2] = palrgba[cidx+2] * (1/255.0);
			}
			else
				VectorCopy(ptype->rgb, p->rgba);

			// use org temporarily for rgbsync
			p->org[2] = frandom();
			p->org[0] = p->org[2]*ptype->rgbrandsync[0] + frandom()*(1-ptype->rgbrandsync[0]);
			p->org[1] = p->org[2]*ptype->rgbrandsync[1] + frandom()*(1-ptype->rgbrandsync[1]);
			p->org[2] = p->org[2]*ptype->rgbrandsync[2] + frandom()*(1-ptype->rgbrandsync[2]);

			p->rgba[0] += p->org[0]*ptype->rgbrand[0] + ptype->rgbchange[0]*p->die;
			p->rgba[1] += p->org[1]*ptype->rgbrand[1] + ptype->rgbchange[1]*p->die;
			p->rgba[2] += p->org[2]*ptype->rgbrand[2] + ptype->rgbchange[2]*p->die;

#if 0
			PScript_ApplyOrgVel(p->org, p->vel, org, axis, i, pcount, ptype);
#else
			p->vel[0] = 0;
			p->vel[1] = 0;
			p->vel[2] = 0;

			// handle spawn modes (org/vel)
			switch (ptype->spawnmode)
			{
/*			case SM_MESHSURFACE:
				if (area <= 0)
				{
					tri++;
					area += calcarea(tri);
					arsvec[] = calcnormal(tri);
				}

				ofsvec[] = randompointintriangle(tri);

				area -= density;
				break;
*/
			case SM_BOX:
				ofsvec[0] = crandom();
				ofsvec[1] = crandom();
				ofsvec[2] = crandom();

				arsvec[0] = ofsvec[0]*ptype->areaspread;
				arsvec[1] = ofsvec[1]*ptype->areaspread;
				arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
				break;
			case SM_TELEBOX:
				ofsvec[0] = k;
				ofsvec[1] = j;
				ofsvec[2] = l+4;
				VectorNormalize(ofsvec);
				VectorScale(ofsvec, 1.0-(frandom())*m, ofsvec);

				// org is just like the original
				arsvec[0] = j + (rand()%spawnspc);
				arsvec[1] = k + (rand()%spawnspc);
				arsvec[2] = l + (rand()%spawnspc);

				// advance telebox loop
				j += spawnspc;
				if (j >= ptype->areaspread)
				{
					j = -ptype->areaspread;
					k += spawnspc;
					if (k >= ptype->areaspread)
					{
						k = -ptype->areaspread;
						l += spawnspc;
						if (l >= ptype->areaspreadvert)
							l = -ptype->areaspreadvert;
					}
				}
				break;
			case SM_LAVASPLASH:
				// calc directions, org with temp vector
				ofsvec[0] = k + (rand()%spawnspc);
				ofsvec[1] = j + (rand()%spawnspc);
				ofsvec[2] = 256;

				arsvec[0] = ofsvec[0];
				arsvec[1] = ofsvec[1];
				arsvec[2] = frandom()*ptype->areaspreadvert;

				VectorNormalize(ofsvec);
				VectorScale(ofsvec, 1.0-(frandom())*m, ofsvec);

				// advance splash loop
				j += spawnspc;
				if (j >= ptype->areaspread)
				{
					j = -ptype->areaspread;
					k += spawnspc;
					if (k >= ptype->areaspread)
						k = -ptype->areaspread;
				}
				break;
			case SM_UNICIRCLE:
				ofsvec[0] = cos(m*i);
				ofsvec[1] = sin(m*i);
				ofsvec[2] = 0;
				VectorScale(ofsvec, ptype->areaspread, arsvec);
				break;
			case SM_FIELD:
				arsvec[0] = (cl.time * avelocities[i][0]) + m;
				arsvec[1] = (cl.time * avelocities[i][1]) + m;
				arsvec[2] = cos(arsvec[1]);

				ofsvec[0] = arsvec[2]*cos(arsvec[0]);
				ofsvec[1] = arsvec[2]*sin(arsvec[0]);
				ofsvec[2] = -sin(arsvec[1]);

//				arsvec[0] = r_avertexnormals[j][0]*ptype->areaspread + ofsvec[0]*BEAMLENGTH;
//				arsvec[1] = r_avertexnormals[j][1]*ptype->areaspread + ofsvec[1]*BEAMLENGTH;
//				arsvec[2] = r_avertexnormals[j][2]*ptype->areaspreadvert + ofsvec[2]*BEAMLENGTH;

				orgadd = ptype->spawnparam2 * sin(cl.time+j+m);
				arsvec[0] = r_avertexnormals[j][0]*(ptype->areaspread+orgadd) + ofsvec[0]*ptype->spawnparam1;
				arsvec[1] = r_avertexnormals[j][1]*(ptype->areaspread+orgadd) + ofsvec[1]*ptype->spawnparam1;
				arsvec[2] = r_avertexnormals[j][2]*(ptype->areaspreadvert+orgadd) + ofsvec[2]*ptype->spawnparam1;

				VectorNormalize(ofsvec);

				j++;
				if (j >= NUMVERTEXNORMALS)
				{
					j = 0;
					m += 0.1762891; // some BS number to try to "randomize" things
				}
				break;
			case SM_DISTBALL:
				{
					float rdist;

					rdist = ptype->spawnparam2 - crandom()*(1-(crandom() * ptype->spawnparam1));

					// this is a strange spawntype, which is based on the fact that
					// crandom()*crandom() provides something similar to an exponential
					// probability curve
					ofsvec[0] = hrandom();
					ofsvec[1] = hrandom();
					if (ptype->areaspreadvert)
						ofsvec[2] = hrandom();
					else
						ofsvec[2] = 0;

					VectorNormalize(ofsvec);
					VectorScale(ofsvec, rdist, ofsvec);

					arsvec[0] = ofsvec[0]*ptype->areaspread;
					arsvec[1] = ofsvec[1]*ptype->areaspread;
					arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
				}
				break;
			default: // SM_BALL, SM_CIRCLE
				{
					ofsvec[0] = hrandom();
					ofsvec[1] = hrandom();
					if (ptype->areaspreadvert)
						ofsvec[2] = hrandom();
					else
						ofsvec[2] = 0;

					VectorNormalize(ofsvec);
					if (ptype->spawnmode != SM_CIRCLE)
						VectorScale(ofsvec, frandom(), ofsvec);

					arsvec[0] = ofsvec[0]*ptype->areaspread;
					arsvec[1] = ofsvec[1]*ptype->areaspread;
					arsvec[2] = ofsvec[2]*ptype->areaspreadvert;
				}
				break;
			}

			// apply arsvec+ofsvec
			orgadd = ptype->orgadd + frandom()*ptype->randomorgadd;
			veladd = ptype->veladd + frandom()*ptype->randomveladd;
#if 1
			if (dir)
				veladd *= VectorLength(dir);
			VectorMA(p->vel, ofsvec[0]*ptype->spawnvel, axis[0], p->vel);
			VectorMA(p->vel, ofsvec[1]*ptype->spawnvel, axis[1], p->vel);
			VectorMA(p->vel, veladd+ofsvec[2]*ptype->spawnvelvert, axis[2], p->vel);

			VectorMA(org, arsvec[0], axis[0], p->org);
			VectorMA(p->org, arsvec[1], axis[1], p->org);
			VectorMA(p->org, orgadd+arsvec[2], axis[2], p->org);
#else
			p->org[0] = org[0] + arsvec[0];
			p->org[1] = org[1] + arsvec[1];
			p->org[2] = org[2] + arsvec[2];
			if (dir)
			{
				p->vel[0] += dir[0]*veladd+ofsvec[0]*ptype->spawnvel;
				p->vel[1] += dir[1]*veladd+ofsvec[1]*ptype->spawnvel;
				p->vel[2] += dir[2]*veladd+ofsvec[2]*ptype->spawnvelvert;

				p->org[0] += dir[0]*orgadd;
				p->org[1] += dir[1]*orgadd;
				p->org[2] += dir[2]*orgadd;
			}
			else
			{
				p->vel[0] += ofsvec[0]*ptype->spawnvel;
				p->vel[1] += ofsvec[1]*ptype->spawnvel;
				p->vel[2] += ofsvec[2]*ptype->spawnvelvert - veladd;

				p->org[2] -= orgadd;
			}
#endif
			if (ptype->flags & PT_WORLDSPACERAND)
			{
				do
				{
					ofsvec[0] = crand();
					ofsvec[1] = crand();
					ofsvec[2] = crand();
				} while(DotProduct(ofsvec,ofsvec)>1);	//crap, but I'm trying to mimic dp
				p->org[0] += ofsvec[0] * ptype->orgwrand[0];
				p->org[1] += ofsvec[1] * ptype->orgwrand[1];
				p->org[2] += ofsvec[2] * ptype->orgwrand[2];
				p->vel[0] += ofsvec[0] * ptype->velwrand[0];
				p->vel[1] += ofsvec[1] * ptype->velwrand[1];
				p->vel[2] += ofsvec[2] * ptype->velwrand[2];
				VectorAdd(p->vel, ptype->velbias, p->vel);
			}
			VectorAdd(p->org, ptype->orgbias, p->org);
#endif

			p->die = particletime + ptype->die - p->die;

			VectorCopy(p->org, p->oldorg);
		}

		// update beam list
		if (ptype->looks.type == PT_BEAM)
		{
			if (b)
			{
				// update dir for bfirst for certain modes since it will never get updated
				switch (ptype->spawnmode)
				{
				case SM_UNICIRCLE:
					// kinda hackish here, assuming ofsvec contains the point at i-1
					arsvec[0] = cos(m*(i-2));
					arsvec[1] = sin(m*(i-2));
					arsvec[2] = 0;
					VectorSubtract(b->p->org, arsvec, bfirst->dir);
					VectorNormalize(bfirst->dir);
					break;
				default:
					break;
				}

				b->flags |= BS_NODRAW;
				b->next = ptype->beams;
				ptype->beams = bfirst;
			}
		}

		// save off emit times in trailstate
		if (ts)
			ts->state2.emittime = pcount - i;

		// maintain run list
		if (!(ptype->state & PS_INRUNLIST) && (ptype->particles || ptype->clippeddecals))
		{
			ptype->nexttorun = part_run_list;
			part_run_list = ptype;
			ptype->state |= PS_INRUNLIST;
		}

skip:

		// go to next associated effect
		if (ptype->assoc < 0)
			break;

		// new trailstate
		if (ts)
		{
			tsk = &(ts->assoc);
			// if *tsk = NULL get a new one
			if (*tsk == NULL)
			{
				ts = P_NewTrailstate(tsk);
				*tsk = ts;
			}
			else
			{
				ts = *tsk;

				if (ts->key != tsk) // trailstate was overwritten
				{
					ts = P_NewTrailstate(tsk); // so get a new one
					*tsk = ts;
				}
			}
		}

		ptype = &part_type[ptype->assoc];
	}

	return 0;
}

int PScript_RunParticleEffectTypeString (vec3_t org, vec3_t dir, float count, const char *name)
{
	int type = PScript_FindParticleType(name);
	if (type < 0)
		return 1;

	return PScript_RunParticleEffectState(org, dir, count, type, NULL);
}

int PScript_EntParticleTrail(vec3_t oldorg, entity_t *ent, const char *name)
{
	vec3_t axis[3];
	int type = PScript_FindParticleType(name);
	if (type < 0)
		return 1;

	AngleVectors(ent->angles, axis[0], axis[1], axis[2]);
	return PScript_ParticleTrail(oldorg, ent->origin, type, ent-cl_entities, axis, &ent->trailstate);
}

/*
===============
P_RunParticleEffect

===============
*/
int PScript_RunParticleEffect (vec3_t org, vec3_t dir, int color, int count)
{
	int ptype;

	ptype = PScript_FindParticleType(va("pe_%i", color));
	if (PScript_RunParticleEffectState(org, dir, count, ptype, NULL))
	{
		if (count > 130 && PART_VALID(pe_size3))
		{
			part_type[pe_size3].colorindex = color & ~0x7;
			part_type[pe_size3].colorrand = 8;
			return PScript_RunParticleEffectState(org, dir, count, pe_size3, NULL);
		}
		else if (count > 20 && PART_VALID(pe_size2))
		{
			part_type[pe_size2].colorindex = color & ~0x7;
			part_type[pe_size2].colorrand = 8;
			return PScript_RunParticleEffectState(org, dir, count, pe_size2, NULL);
		}
		else if (PART_VALID(pe_default))
		{
			part_type[pe_default].colorindex = color & ~0x7;
			part_type[pe_default].colorrand = 8;
			return PScript_RunParticleEffectState(org, dir, count, pe_default, NULL);
		}
//		else if (fallback)
//			return fallback->RunParticleEffect(org, dir, color, count);
		return true;
	}
	return false;
}

#if UNSUPPORTED
//h2 stylie
static void PScript_RunParticleEffect2 (vec3_t org, vec3_t dmin, vec3_t dmax, int color, int effect, int count)
{
	int			i, j;
	float		num;
	float invcount;
	vec3_t	nvel;

	int ptype = PScript_FindParticleType(va("pe2_%i_%i", effect, color));
	if (!PART_VALID(ptype))
	{
		ptype = PScript_FindParticleType(va("pe2_%i", effect));
		if (!PART_VALID(ptype))
		{
			/*if (fallback)
			{
				fallback->RunParticleEffect2(org, dmin, dmax, color, effect, count);
				return;
			}*/
			ptype = pe_default;
		}
		if (!PART_VALID(ptype))
			return;
		part_type[ptype].colorindex = color;
	}

	invcount = 1/part_type[ptype].count; // using this to get R_RPET to always spawn 1
	count = count * part_type[ptype].count;

	for (i=0 ; i<count ; i++)
	{
		if (!free_particles)
			return;

		for (j=0 ; j<3 ; j++)
		{
			num = rand() / (float)RAND_MAX;
			nvel[j] = dmin[j] + ((dmax[j] - dmin[j]) * num);
		}
		PScript_RunParticleEffectState(org, nvel, invcount, ptype, NULL);

	}
}

/*
===============
P_RunParticleEffect3

===============
*/
//h2 stylie
static void PScript_RunParticleEffect3 (vec3_t org, vec3_t box, int color, int effect, int count)
{
	int			i, j;
	vec3_t	nvel;
	float		num;
	float invcount;

	int ptype = PScript_FindParticleType(va("pe3_%i_%i", effect, color));
	if (!PART_VALID(ptype))
	{
		ptype = PScript_FindParticleType(va("pe3_%i", effect));
		if (!PART_VALID(ptype))
		{
//			if (fallback)
//			{
//				fallback->RunParticleEffect3(org, box, color, effect, count);
//				return;
//			}
			ptype = pe_default;
		}
		if (!PART_VALID(ptype))
			return;
		part_type[ptype].colorindex = color;
	}

	invcount = 1/part_type[ptype].count; // using this to get R_RPET to always spawn 1
	count = count * part_type[ptype].count;

	for (i=0 ; i<count ; i++)
	{
		if (!free_particles)
			return;

		for (j=0 ; j<3 ; j++)
		{
			num = rand() / (float)RAND_MAX;
			nvel[j] = (box[j] * num * 2) - box[j];
		}

		PScript_RunParticleEffectState(org, nvel, invcount, ptype, NULL);
	}
}

/*
===============
P_RunParticleEffect4

===============
*/
//h2 stylie
static void PScript_RunParticleEffect4 (vec3_t org, float radius, int color, int effect, int count)
{
	int			i, j;
	vec3_t	nvel;
	float		num;
	float invcount;

	int ptype = PScript_FindParticleType(va("pe4_%i_%i", effect, color));
	if (!PART_VALID(ptype))
	{
		ptype = PScript_FindParticleType(va("pe4_%i", effect));
		if (!PART_VALID(ptype))
		{
//			if (fallback)
//			{
//				fallback->RunParticleEffect4(org, radius, color, effect, count);
//				return;
//			}
			ptype = pe_default;
		}
		if (!PART_VALID(ptype))
			return;
		part_type[ptype].colorindex = color;
	}

	invcount = 1/part_type[ptype].count; // using this to get R_RPET to always spawn 1
	count = count * part_type[ptype].count;

	for (i=0 ; i<count ; i++)
	{
		if (!free_particles)
			return;

		for (j=0 ; j<3 ; j++)
		{
			num = rand() / (float)RAND_MAX;
			nvel[j] = (radius * num * 2) - radius;
		}
		PScript_RunParticleEffectState(org, nvel, invcount, ptype, NULL);
	}
}

static void PScript_ParticleTrailIndex (vec3_t start, vec3_t end, int color, int crnd, trailstate_t **tsk)
{
	if (PART_VALID(pe_defaulttrail))
	{
		part_type[pe_defaulttrail].colorindex = color;
		part_type[pe_defaulttrail].colorrand = crnd;
		PScript_ParticleTrail(start, end, pe_defaulttrail, 0, NULL, tsk);
	}
}

static void PScript_RunParticleEffectPalette (const char *nameprefix, vec3_t org, vec3_t dir, int color, int count)
{
	int ptype;

	ptype = PScript_FindParticleType(va("%s_%i", nameprefix, color));
	if (ptype != P_INVALID)
		PScript_RunParticleEffectState(org, dir, count, ptype, NULL);
	else
	{
		ptype = PScript_FindParticleType(nameprefix);
		if (!PART_VALID(ptype))
		{
			part_type[ptype].colorindex = color;
			PScript_RunParticleEffectState(org, dir, count, ptype, NULL);
		}
	}
}

static void PScript_RunParticleCube(int ptype, vec3_t minb, vec3_t maxb, vec3_t dir_min, vec3_t dir_max, float count, int colour, qboolean gravity, float jitter)
{
	vec3_t org;
	int			i, j;
	float		num;
	float invcount;

	if (!PART_VALID(ptype))
		ptype = PScript_FindParticleType(va("te_cube%s_%i", gravity?"_g":"", colour));
	if (!PART_VALID(ptype))
	{
		ptype = PScript_FindParticleType(va("te_cube%s", gravity?"_g":""));
		if (!PART_VALID(ptype))
			ptype = pe_default;
		if (!PART_VALID(ptype))
			return;
		part_type[ptype].colorindex = colour;
	}

	invcount = 1/part_type[ptype].count; // using this to get R_RPET to always spawn 1
	count = count * part_type[ptype].count;

	for (i=0 ; i<count ; i++)
	{
		if (!free_particles)
			return;

		for (j=0 ; j<3 ; j++)
		{
			num = rand() / (float)RAND_MAX;
			org[j] = minb[j] + num*(maxb[j]-minb[j]);
		}
		PScript_RunParticleEffectState(org, dir_min, invcount, ptype, NULL);
	}
}
#endif

void PScript_RunParticleWeather(vec3_t minb, vec3_t maxb, vec3_t dir, float count, int colour, const char *efname)
{
	vec3_t org;
	int			i, j;
	float		num;
	float invcount;

	int ptype = PScript_FindParticleType(va("te_%s_%i", efname, colour));
	if (!PART_VALID(ptype))
	{
		ptype = PScript_FindParticleType(va("te_%s", efname));
		if (!PART_VALID(ptype))
			ptype = pe_default;
		if (!PART_VALID(ptype))
			return;
		part_type[ptype].colorindex = colour;
	}

	invcount = 1/part_type[ptype].count; // using this to get R_RPET to always spawn 1
	count = count * part_type[ptype].count;

	for (i=0 ; i<count ; i++)
	{
		if (!free_particles)
			return;

		for (j=0 ; j<3 ; j++)
		{
			num = rand() / (float)RAND_MAX;
			org[j] = minb[j] + num*(maxb[j]-minb[j]);
		}
		PScript_RunParticleEffectState(org, dir, invcount, ptype, NULL);
	}
}

static void PScript_ParticleTrailDraw (vec3_t startpos, vec3_t end, part_type_t *ptype, trailstate_t **tsk, int dlkey, vec3_t dlaxis[3])
{
	vec3_t	vec, vstep, right, up, start;
	float	len;
	int			tcount;
	particle_t	*p;
	beamseg_t   *b;
	beamseg_t   *bfirst;
	trailstate_t *ts;
	float count;

	float veladd = -ptype->veladd;
	float step;
	float stop;
	float tdegree = 2.0*M_PI/256; /* MSVC whine */
	float sdegree = 0;
	float nrfirst, nrlast;
	byte *palrgba = (byte *)d_8to24table;

	VectorCopy(startpos, start);

	// eliminate trailstate if flag set
	if (ptype->flags & PT_NOSTATE)
		tsk = NULL;

	// trailstate allocation/deallocation
	if (tsk)
	{
		// if *tsk = NULL get a new one
		if (*tsk == NULL)
		{
			ts = P_NewTrailstate(tsk);
			*tsk = ts;
		}
		else
		{
			ts = *tsk;

			if (ts->key != tsk) // trailstate was overwritten
			{
				ts = P_NewTrailstate(tsk); // so get a new one
				*tsk = ts;
			}
		}
	}
	else
		ts = NULL;

	PScript_EffectSpawned(ptype, start, dlaxis, dlkey, 1);

	if (ptype->assoc>=0)
	{
		if (ts)
			PScript_ParticleTrail(start, end, ptype->assoc, dlkey, NULL, &(ts->assoc));
		else
			PScript_ParticleTrail(start, end, ptype->assoc, dlkey, NULL, NULL);
	}

	if (r_part_contentswitch.value && (ptype->flags & (PT_TRUNDERWATER | PT_TROVERWATER)) && cl.worldmodel)
	{
		unsigned int cont;
		cont = CL_PointContentsMask(startpos);

		if ((ptype->flags & PT_TROVERWATER) && (cont & ptype->fluidmask))
			return;
		if ((ptype->flags & PT_TRUNDERWATER) && !(cont & ptype->fluidmask))
			return;
	}

	// time limit for trails
	if (ptype->spawntime && ts)
	{
		if (ts->state1.statetime > particletime)
			return; // timelimit still in effect

		ts->state1.statetime = particletime + ptype->spawntime; // record old time
		ts = NULL; // clear trailstate so we don't save length/lastseg
	}

	// random chance for trails
	if (ptype->spawnchance < frandom())
		return; // don't spawn but return success

	if (!ptype->die)
		ts = NULL;

	// use ptype step to calc step vector and step size
	step = (ptype->count*r_part_density.value) + ptype->countextra;
	if (step>0)
	{
		step = 1/step;
		if (step < 0.01)
			step = 0.01;
	}
	else
		step = 0;

	VectorSubtract (end, start, vec);
	len = VectorNormalize (vec);

	if (ptype->flags & PT_AVERAGETRAIL)
	{
		float tavg;
		// mangle len/step to get last point to be at end
		tavg = len / step;
		tavg = tavg / ceil(tavg);
		step *= tavg;
		len += step;
	}

	VectorScale(vec, step, vstep);

	// add offset
//	VectorAdd(start, ptype->orgbias, start);

	// spawn mode precalculations
	if (ptype->spawnmode == SM_SPIRAL)
	{
		VectorVectors(vec, right, up);

		// precalculate degree of rotation
		if (ptype->spawnparam1)
			tdegree = 2.0*M_PI/ptype->spawnparam1; /* distance per rotation inversed */
		sdegree = ptype->spawnparam2*(M_PI/180);
	}
	else if (ptype->spawnmode == SM_CIRCLE)
	{
		VectorVectors(vec, right, up);
	}

	// store last stop here for lack of a better solution besides vectors
	if (ts)
	{
		ts->state2.laststop = stop = ts->state2.laststop + len;	//when to stop
		len = ts->state1.lastdist;
	}
	else
	{
		stop = len;
		len = 0;
	}

//	len = ts->lastdist/step;
//	len = (len - (int)len)*step;
//	VectorMA (start, -len, vec, start);

	if (ptype->flags & PT_NOSPREADFIRST)
		nrfirst = len + step*1.5;
	else
		nrfirst = len;

	if (ptype->flags & PT_NOSPREADLAST)
		nrlast = stop;
	else
		nrlast = stop + step;

	b = bfirst = NULL;

	if (len < stop)
		count = (stop-len) / step;
	else
	{
		count = 0;
		step = 0;
		VectorClear(vstep);
	}
	count += ptype->countextra;

	while (count-->0)//len < stop)
	{
		len += step;

		if (!free_particles)
		{
			len = stop;
			break;
		}

		p = free_particles;
		if (ptype->looks.type == PT_BEAM)
		{
			if (!free_beams)
			{
				len = stop;
				break;
			}
			if (b)
			{
				b = b->next = free_beams;
				free_beams = free_beams->next;
			}
			else
			{
				b = bfirst = free_beams;
				free_beams = free_beams->next;
			}
			b->texture_s = len; // not sure how to calc this
			b->flags = 0;
			b->p = p;
			VectorCopy(vec, b->dir);
		}

		free_particles = p->next;
		p->next = ptype->particles;
		ptype->particles = p;

		p->die = ptype->randdie*frandom();
		p->scale = ptype->scale+ptype->scalerand*frandom();
		if (ptype->die)
			p->rgba[3] = ptype->alpha+p->die*ptype->alphachange;
		else
			p->rgba[3] = ptype->alpha;
		p->rgba[3] += ptype->alpharand*frandom();
//		p->color = 0;

//		if (ptype->spawnmode == SM_TRACER)
		if (ptype->spawnparam1)
			tcount = (int)(len * ptype->count / ptype->spawnparam1);
		else
			tcount = (int)(len * ptype->count);

		if (ptype->colorindex >= 0)
		{
			int cidx;
			cidx = ptype->colorrand > 0 ? rand() % ptype->colorrand : 0;
			if (ptype->flags & PT_CITRACER) // colorindex behavior as per tracers in std Q1
				cidx += ((tcount & 4) << 1);

			cidx = ptype->colorindex + cidx;
			if (cidx > 255)
				p->rgba[3] = p->rgba[3] / 2;
			cidx = (cidx & 0xff) * 4;
			p->rgba[0] = palrgba[cidx] * (1/255.0);
			p->rgba[1] = palrgba[cidx+1] * (1/255.0);
			p->rgba[2] = palrgba[cidx+2] * (1/255.0);
		}
		else
			VectorCopy(ptype->rgb, p->rgba);

		// use org temporarily for rgbsync
		p->org[2] = frandom();
		p->org[0] = p->org[2]*ptype->rgbrandsync[0] + frandom()*(1-ptype->rgbrandsync[0]);
		p->org[1] = p->org[2]*ptype->rgbrandsync[1] + frandom()*(1-ptype->rgbrandsync[1]);
		p->org[2] = p->org[2]*ptype->rgbrandsync[2] + frandom()*(1-ptype->rgbrandsync[2]);

		p->rgba[0] += p->org[0]*ptype->rgbrand[0] + ptype->rgbchange[0]*p->die;
		p->rgba[1] += p->org[1]*ptype->rgbrand[1] + ptype->rgbchange[1]*p->die;
		p->rgba[2] += p->org[2]*ptype->rgbrand[2] + ptype->rgbchange[2]*p->die;

		VectorClear (p->vel);
		if (ptype->emittime < 0)
			p->state.trailstate = NULL; // init trailstate
		else
			p->state.nextemit = particletime + ptype->emitstart - p->die;

		p->rotationspeed = ptype->rotationmin + frandom()*ptype->rotationrand;
		p->angle = ptype->rotationstartmin + frandom()*ptype->rotationstartrand;
		p->s1 = ptype->s1;
		p->t1 = ptype->t1;
		p->s2 = ptype->s2;
		p->t2 = ptype->t2;
		if (ptype->randsmax!=1)
		{
			float offs;
			offs = ptype->texsstride * (rand()%ptype->randsmax);
			p->s1 += offs;
			p->s2 += offs;
			while (p->s1 >= 1)
			{
				p->s1 -= 1;
				p->s2 -= 1;
				p->t1 += ptype->texsstride;
				p->t2 += ptype->texsstride;
			}
		}

		if (len < nrfirst || len >= nrlast)
		{
			// no offset or areaspread for these particles...
			p->vel[0] = vec[0]*veladd;
			p->vel[1] = vec[1]*veladd;
			p->vel[2] = vec[2]*veladd;

			VectorCopy(start, p->org);
		}
		else
		{
			switch(ptype->spawnmode)
			{
			case SM_TRACER:
				if (tcount & 1)
				{
					p->vel[0] = vec[1]*ptype->spawnvel;
					p->vel[1] = -vec[0]*ptype->spawnvel;
					p->org[0] = vec[1]*ptype->areaspread;
					p->org[1] = -vec[0]*ptype->areaspread;
				}
				else
				{
					p->vel[0] = -vec[1]*ptype->spawnvel;
					p->vel[1] = vec[0]*ptype->spawnvel;
					p->org[0] = -vec[1]*ptype->areaspread;
					p->org[1] = vec[0]*ptype->areaspread;
				}

				p->vel[0] += vec[0]*veladd;
				p->vel[1] += vec[1]*veladd;
				p->vel[2] = vec[2]*veladd;

				p->org[0] += start[0];
				p->org[1] += start[1];
				p->org[2] = start[2];
				break;
			case SM_SPIRAL:
				{
					float tsin, tcos;
					float tright, tup;

					tcos = cos(len*tdegree+sdegree);
					tsin = sin(len*tdegree+sdegree);

					tright = tcos*ptype->areaspread;
					tup = tsin*ptype->areaspread;

					p->org[0] = start[0] + right[0]*tright + up[0]*tup;
					p->org[1] = start[1] + right[1]*tright + up[1]*tup;
					p->org[2] = start[2] + right[2]*tright + up[2]*tup;

					tright = tcos*ptype->spawnvel;
					tup = tsin*ptype->spawnvel;

					p->vel[0] = vec[0]*veladd + right[0]*tright + up[0]*tup;
					p->vel[1] = vec[1]*veladd + right[1]*tright + up[1]*tup;
					p->vel[2] = vec[2]*veladd + right[2]*tright + up[2]*tup;
				}
				break;
			// TODO: directionalize SM_BALL/SM_CIRCLE/SM_DISTBALL
			case SM_BALL:
				p->org[0] = crandom();
				p->org[1] = crandom();
				p->org[2] = crandom();
				VectorNormalize(p->org);
				VectorScale(p->org, frandom(), p->org);

				p->vel[0] = vec[0]*veladd + p->org[0]*ptype->spawnvel;
				p->vel[1] = vec[1]*veladd + p->org[1]*ptype->spawnvel;
				p->vel[2] = vec[2]*veladd + p->org[2]*ptype->spawnvelvert;

				p->org[0] = p->org[0]*ptype->areaspread + start[0];
				p->org[1] = p->org[1]*ptype->areaspread + start[1];
				p->org[2] = p->org[2]*ptype->areaspreadvert + start[2];
				break;

			case SM_CIRCLE:
				{
					float tsin, tcos;

					tcos = cos(len*tdegree)*ptype->areaspread;
					tsin = sin(len*tdegree)*ptype->areaspread;

					p->org[0] = start[0] + right[0]*tcos + up[0]*tsin + vstep[0] * (len*tdegree);
					p->org[1] = start[1] + right[1]*tcos + up[1]*tsin + vstep[1] * (len*tdegree);
					p->org[2] = start[2] + right[2]*tcos + up[2]*tsin + vstep[2] * (len*tdegree)*50;

					tcos = cos(len*tdegree)*ptype->spawnvel;
					tsin = sin(len*tdegree)*ptype->spawnvel;

					p->vel[0] = vec[0]*veladd + right[0]*tcos + up[0]*tsin;
					p->vel[1] = vec[1]*veladd + right[1]*tcos + up[1]*tsin;
					p->vel[2] = vec[2]*veladd + right[2]*tcos + up[2]*tsin;
				}
				break;

			case SM_DISTBALL:
				{
					float rdist;

					rdist = ptype->spawnparam2 - crandom()*(1-(crandom() * ptype->spawnparam1));

					// this is a strange spawntype, which is based on the fact that
					// crandom()*crandom() provides something similar to an exponential
					// probability curve
					p->org[0] = crandom();
					p->org[1] = crandom();
					p->org[2] = crandom();

					VectorNormalize(p->org);
					VectorScale(p->org, rdist, p->org);

					p->vel[0] = vec[0]*veladd + p->org[0]*ptype->spawnvel;
					p->vel[1] = vec[1]*veladd + p->org[1]*ptype->spawnvel;
					p->vel[2] = vec[2]*veladd + p->org[2]*ptype->spawnvelvert;

					p->org[0] = p->org[0]*ptype->areaspread + start[0];
					p->org[1] = p->org[1]*ptype->areaspread + start[1];
					p->org[2] = p->org[2]*ptype->areaspreadvert + start[2];
				}
				break;
			default:
				p->org[0] = crandom();
				p->org[1] = crandom();
				p->org[2] = crandom();

				p->vel[0] = vec[0]*veladd + p->org[0]*ptype->spawnvel;
				p->vel[1] = vec[1]*veladd + p->org[1]*ptype->spawnvel;
				p->vel[2] = vec[2]*veladd + p->org[2]*ptype->spawnvelvert;

				p->org[0] = p->org[0]*ptype->areaspread + start[0];
				p->org[1] = p->org[1]*ptype->areaspread + start[1];
				p->org[2] = p->org[2]*ptype->areaspreadvert + start[2];
				break;
			}

			if (ptype->orgadd)
			{
				p->org[0] += vec[0]*ptype->orgadd;
				p->org[1] += vec[1]*ptype->orgadd;
				p->org[2] += vec[2]*ptype->orgadd;
			}
		}
		if (ptype->flags & PT_WORLDSPACERAND)
		{
			vec3_t vtmp;
			do
			{
				vtmp[0] = crand();
				vtmp[1] = crand();
				vtmp[2] = crand();
			} while(DotProduct(vtmp,vtmp)>1);	//crap, but I'm trying to mimic dp
			p->org[0] += vtmp[0] * ptype->orgwrand[0];
			p->org[1] += vtmp[1] * ptype->orgwrand[1];
			p->org[2] += vtmp[2] * ptype->orgwrand[2];
			p->vel[0] += vtmp[0] * ptype->velwrand[0];
			p->vel[1] += vtmp[1] * ptype->velwrand[1];
			p->vel[2] += vtmp[2] * ptype->velwrand[2];
			VectorAdd(p->vel, ptype->velbias, p->vel);
		}
		VectorAdd(p->org, ptype->orgbias, p->org);

		VectorAdd (start, vstep, start);

		if (ptype->countrand)
		{
			float rstep = frandom() / ptype->countrand;
			VectorMA(start, rstep, vec, start);
			step += rstep;
		}

		p->die = particletime + ptype->die - p->die;
		VectorCopy(p->org, p->oldorg);
	}

	if (ts)
	{
		ts->state1.lastdist = len;

		// update beamseg list
		if (ptype->looks.type == PT_BEAM)
		{
			if (b)
			{
				if (ptype->beams)
				{
					if (ts->lastbeam)
					{
						b->next = ts->lastbeam->next;
						ts->lastbeam->next = bfirst;
						ts->lastbeam->flags &= ~BS_LASTSEG;
					}
					else
					{
						b->next = ptype->beams;
						ptype->beams = bfirst;
					}
				}
				else
				{
					ptype->beams = bfirst;
					b->next = NULL;
				}

				b->flags |= BS_LASTSEG;
				ts->lastbeam = b;
			}

			if ((!free_particles || !free_beams) && ts->lastbeam)
			{
				ts->lastbeam->flags &= ~BS_LASTSEG;
				ts->lastbeam->flags |= BS_NODRAW;
				ts->lastbeam = NULL;
			}
		}
	}
	else if (ptype->looks.type == PT_BEAM)
	{
		if (b)
		{
			b->flags |= BS_NODRAW;
			b->next = ptype->beams;
			ptype->beams = bfirst;
		}
	}

	// maintain run list
	if (!(ptype->state & PS_INRUNLIST))
	{
		ptype->nexttorun = part_run_list;
		part_run_list = ptype;
		ptype->state |= PS_INRUNLIST;
	}

	return;
}

int PScript_ParticleTrail (vec3_t startpos, vec3_t end, int type, int dlkey, vec3_t axis[3], trailstate_t **tsk)
{
	part_type_t *ptype = &part_type[type];

	// TODO: fallback particle system won't have a decent trailstate which will mess up
	// high fps trails
//	if (type >= FALLBACKBIAS && fallback)
//		return fallback->ParticleTrail(startpos, end, type-FALLBACKBIAS, dlkey, axis, NULL);

	if (type < 0 || type >= numparticletypes)
		return 1;	//bad value

	if (!ptype->loaded)
		return 1;

	// inwater check, switch only once
	if (r_part_contentswitch.value && ptype->inwater >= 0 && cl.worldmodel)
	{
		unsigned int cont;
		cont = CL_PointContentsMask(startpos);

		if (cont & FTECONTENTS_FLUID)
			ptype = &part_type[ptype->inwater];
	}

	PScript_ParticleTrailDraw (startpos, end, ptype, tsk, dlkey, axis);
	return 0;
}

static vec3_t pright, pup;
static float pframetime;

static void R_AddFanSparkParticle(scenetris_t *t, particle_t *p, plooks_t *type)
{
	vec3_t v, cr, o2;
	float scale;

	if (cl_numstrisvert+3 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*3;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	scale = (p->org[0] - r_origin[0])*vpn[0] + (p->org[1] - r_origin[1])*vpn[1]
		+ (p->org[2] - r_origin[2])*vpn[2];
	scale = (scale*p->scale)*(type->invscalefactor) + p->scale * (type->scalefactor*250);
	if (scale < 20)
		scale = 0.05;
	else
		scale = 0.05 + scale * 0.0001;

	if (type->premul)
	{
		vec4_t rgba;
		float a = p->rgba[3];
		if (a > 1)
			a = 1;
		rgba[0] = p->rgba[0] * a;
		rgba[1] = p->rgba[1] * a;
		rgba[2] = p->rgba[2] * a;
		rgba[3] = (type->premul==2)?0:a;
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+2]);
	}
	else
	{
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+2]);
	}

	Vector2Set(cl_strisvertt[cl_numstrisvert+0], p->s1, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], p->s1, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+2], p->s2, p->t1);


	VectorMA(p->org, -scale, p->vel, o2);
	VectorSubtract(r_refdef.vieworg, o2, v);
	CrossProduct(v, p->vel, cr);
	VectorNormalize(cr);

	VectorCopy(p->org, cl_strisvertv[cl_numstrisvert+0]);
	VectorMA(o2, -p->scale, cr, cl_strisvertv[cl_numstrisvert+1]);
	VectorMA(o2, p->scale, cr, cl_strisvertv[cl_numstrisvert+2]);

	if (cl_numstrisidx+3 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*3;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;

	cl_numstrisvert += 3;

	t->numvert += 3;
	t->numidx += 3;

}

//static void R_AddLineSparkParticle(int count, particle_t **plist, plooks_t *type)
static void R_AddLineSparkParticle(scenetris_t *t, particle_t *p, plooks_t *type)
{
	if (cl_numstrisvert+2 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*2;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	if (type->premul)
	{
		float a = p->rgba[3];
		if (a > 1)
			a = 1;
		VectorScale(p->rgba, a, cl_strisvertc[cl_numstrisvert+0]);
		cl_strisvertc[cl_numstrisvert+0][3] = (type->premul==2)?0:a;
		Vector4Clear(cl_strisvertc[cl_numstrisvert+1]);
	}
	else
	{
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+0]);
		VectorCopy(p->rgba, cl_strisvertc[cl_numstrisvert+1]);
		cl_strisvertc[cl_numstrisvert+1][3] = 0;
	}
	Vector2Set(cl_strisvertt[cl_numstrisvert+0], p->s1, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], p->s2, p->t2);

	VectorCopy(p->org, cl_strisvertv[cl_numstrisvert+0]);
	VectorMA(p->org, -1.0/10, p->vel, cl_strisvertv[cl_numstrisvert+1]);
	
	if (cl_numstrisidx+2 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*2;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;

	cl_numstrisvert += 2;

	t->numvert += 2;
	t->numidx += 2;
}

static void R_AddTSparkParticle(scenetris_t *t, particle_t *p, plooks_t *type)
{
	vec3_t v, cr, o2;
//	float scale;

	if (cl_numstrisvert+4 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*4;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	if (type->premul)
	{
		vec4_t rgba;
		float a = p->rgba[3];
		if (a > 1)
			a = 1;
		rgba[0] = p->rgba[0] * a;
		rgba[1] = p->rgba[1] * a;
		rgba[2] = p->rgba[2] * a;
		rgba[3] = (type->premul==2)?0:a;
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+3]);
	}
	else
	{
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+3]);
	}

	Vector2Set(cl_strisvertt[cl_numstrisvert+0], p->s1, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], p->s1, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+2], p->s2, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+3], p->s2, p->t1);

	{
		vec3_t movedir;
		float halfscale = p->scale*0.5;
		float length = VectorNormalize2(p->vel, movedir);
		if (type->stretch < 0)
			length = -type->stretch;	//fixed lengths
		else if (type->stretch)
			length *= type->stretch;	//velocity multiplier
		else
			Sys_Error("type->stretch should be 0.05\n");
//			length *= 0.05;				//fallback

		if (length < halfscale * type->minstretch)
			length = halfscale * type->minstretch;

		VectorMA(p->org, -length, movedir, o2);
		VectorSubtract(r_refdef.vieworg, o2, v);
		CrossProduct(v, p->vel, cr);
		VectorNormalize(cr);
		VectorMA(o2, -p->scale/2, cr, cl_strisvertv[cl_numstrisvert+0]);
		VectorMA(o2, p->scale/2, cr, cl_strisvertv[cl_numstrisvert+1]);

		VectorMA(p->org, length, movedir, o2);
	}

	VectorSubtract(r_refdef.vieworg, o2, v);
	CrossProduct(v, p->vel, cr);
	VectorNormalize(cr);

	VectorMA(o2, p->scale*0.5, cr, cl_strisvertv[cl_numstrisvert+2]);
	VectorMA(o2, -p->scale*0.5, cr, cl_strisvertv[cl_numstrisvert+3]);



	if (cl_numstrisidx+6 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*6;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 3;

	cl_numstrisvert += 4;

	t->numvert += 4;
	t->numidx += 6;
}

static void R_DrawParticleBeam(scenetris_t *t, beamseg_t *b, plooks_t *type)
{
	vec3_t v;
	vec3_t cr;
	beamseg_t *c;
	particle_t *p;
	particle_t *q;
	float ts;

	c = b->next;

	q = c->p;
	if (!q)
		return;
	p = b->p;

	if (cl_numstrisvert+4 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*4;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

//		q->rgba[3] = 1;
//		p->rgba[3] = 1;

	VectorSubtract(r_refdef.vieworg, q->org, v);
	VectorNormalize(v);
	CrossProduct(c->dir, v, cr);
	VectorNormalize(cr);
	ts = c->texture_s*q->angle + particletime*q->rotationspeed;
	Vector4Copy(q->rgba, cl_strisvertc[cl_numstrisvert+0]);
	Vector4Copy(q->rgba, cl_strisvertc[cl_numstrisvert+1]);
	Vector2Set(cl_strisvertt[cl_numstrisvert+0], ts, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], ts, p->t2);
	VectorMA(q->org, -q->scale, cr, cl_strisvertv[cl_numstrisvert+0]);
	VectorMA(q->org, q->scale, cr, cl_strisvertv[cl_numstrisvert+1]);

	VectorSubtract(r_refdef.vieworg, p->org, v);
	VectorNormalize(v);
	CrossProduct(b->dir, v, cr); // replace with old p->dir?
	VectorNormalize(cr);
	ts = b->texture_s*p->angle + particletime*p->rotationspeed;
	Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+2]);
	Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+3]);
	Vector2Set(cl_strisvertt[cl_numstrisvert+2], ts, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+3], ts, p->t1);
	VectorMA(p->org, p->scale, cr, cl_strisvertv[cl_numstrisvert+2]);
	VectorMA(p->org, -p->scale, cr, cl_strisvertv[cl_numstrisvert+3]);

	t->numvert += 4;

	if (cl_numstrisidx+6 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*6;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 3;
	cl_numstrisvert += 4;
	t->numidx += 4;
}

static void R_AddClippedDecal(scenetris_t *t, clippeddecal_t *d, plooks_t *type)
{
	if (cl_numstrisvert+4 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*4;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	if (d->entity > 0)
	{
		entity_t *le = CL_EntityNum(d->entity);
		if (le->angles[0] || le->angles[1] || le->angles[2])
		{	//FIXME: deal with rotated entities.
			d->die = -1;
			return;
		}
		VectorAdd(d->vertex[0], le->origin, cl_strisvertv[cl_numstrisvert+0]);
		VectorAdd(d->vertex[1], le->origin, cl_strisvertv[cl_numstrisvert+1]);
		VectorAdd(d->vertex[2], le->origin, cl_strisvertv[cl_numstrisvert+2]);
	}
	else
	{
		VectorCopy(d->vertex[0], cl_strisvertv[cl_numstrisvert+0]);
		VectorCopy(d->vertex[1], cl_strisvertv[cl_numstrisvert+1]);
		VectorCopy(d->vertex[2], cl_strisvertv[cl_numstrisvert+2]);
	}

	if (type->premul)
	{
		vec4_t rgba;
		float a = d->rgba[3];
		if (a > 1)
			a = 1;
		rgba[0] = d->rgba[0] * a;
		rgba[1] = d->rgba[1] * a;
		rgba[2] = d->rgba[2] * a;
		rgba[3] = (type->premul==2)?0:a;
		Vector4Scale(rgba, d->valpha[0], cl_strisvertc[cl_numstrisvert+0]);
		Vector4Scale(rgba, d->valpha[1], cl_strisvertc[cl_numstrisvert+1]);
		Vector4Scale(rgba, d->valpha[2], cl_strisvertc[cl_numstrisvert+2]);
	}
	else
	{
		Vector4Copy(d->rgba, cl_strisvertc[cl_numstrisvert+0]);
		cl_strisvertc[cl_numstrisvert+0][3] *= d->valpha[0];
		Vector4Copy(d->rgba, cl_strisvertc[cl_numstrisvert+1]);
		cl_strisvertc[cl_numstrisvert+1][3] *= d->valpha[1];
		Vector4Copy(d->rgba, cl_strisvertc[cl_numstrisvert+2]);
		cl_strisvertc[cl_numstrisvert+2][3] *= d->valpha[2];
	}

	Vector2Copy(d->texcoords[0], cl_strisvertt[cl_numstrisvert+0]);
	Vector2Copy(d->texcoords[1], cl_strisvertt[cl_numstrisvert+1]);
	Vector2Copy(d->texcoords[2], cl_strisvertt[cl_numstrisvert+2]);

	if (cl_numstrisidx+3 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*3;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;

	cl_numstrisvert += 3;

	t->numvert += 3;
	t->numidx += 3;
}

static void R_AddUnclippedDecal(scenetris_t *t, particle_t *p, plooks_t *type)
{
	float x, y;
	vec3_t sdir, tdir;

	if (cl_numstrisvert+4 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*4;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	if (type->premul)
	{
		vec4_t rgba;
		float a = p->rgba[3];
		if (a > 1)
			a = 1;
		rgba[0] = p->rgba[0] * a;
		rgba[1] = p->rgba[1] * a;
		rgba[2] = p->rgba[2] * a;
		rgba[3] = (type->premul==2)?0:a;
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+3]);
	}
	else
	{
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+3]);
	}

	Vector2Set(cl_strisvertt[cl_numstrisvert+0], p->s1, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], p->s1, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+2], p->s2, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+3], p->s2, p->t1);

//	if (p->vel[1] == 1)
	{
		VectorSet(sdir, 1, 0, 0);
		VectorSet(tdir, 0, 1, 0);
	}

	if (p->angle)
	{
		x = sin(p->angle)*p->scale;
		y = cos(p->angle)*p->scale;

		cl_strisvertv[cl_numstrisvert+0][0] = p->org[0] - x*sdir[0] - y*tdir[0];
		cl_strisvertv[cl_numstrisvert+0][1] = p->org[1] - x*sdir[1] - y*tdir[1];
		cl_strisvertv[cl_numstrisvert+0][2] = p->org[2] - x*sdir[2] - y*tdir[2];
		cl_strisvertv[cl_numstrisvert+1][0] = p->org[0] - y*sdir[0] + x*tdir[0];
		cl_strisvertv[cl_numstrisvert+1][1] = p->org[1] - y*sdir[1] + x*tdir[1];
		cl_strisvertv[cl_numstrisvert+1][2] = p->org[2] - y*sdir[2] + x*tdir[2];
		cl_strisvertv[cl_numstrisvert+2][0] = p->org[0] + x*sdir[0] + y*tdir[0];
		cl_strisvertv[cl_numstrisvert+2][1] = p->org[1] + x*sdir[1] + y*tdir[1];
		cl_strisvertv[cl_numstrisvert+2][2] = p->org[2] + x*sdir[2] + y*tdir[2];
		cl_strisvertv[cl_numstrisvert+3][0] = p->org[0] + y*sdir[0] - x*tdir[0];
		cl_strisvertv[cl_numstrisvert+3][1] = p->org[1] + y*sdir[1] - x*tdir[1];
		cl_strisvertv[cl_numstrisvert+3][2] = p->org[2] + y*sdir[2] - x*tdir[2];
	}
	else
	{
		VectorMA(p->org, -p->scale, tdir, cl_strisvertv[cl_numstrisvert+0]);
		VectorMA(p->org, -p->scale, sdir, cl_strisvertv[cl_numstrisvert+1]);
		VectorMA(p->org, p->scale, tdir, cl_strisvertv[cl_numstrisvert+2]);
		VectorMA(p->org, p->scale, sdir, cl_strisvertv[cl_numstrisvert+3]);
	}

	if (cl_numstrisidx+6 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*6;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 3;

	cl_numstrisvert += 4;

	t->numvert += 4;
	t->numidx += 6;
}

static void R_AddTexturedParticle(scenetris_t *t, particle_t *p, plooks_t *type)
{
	float scale, x, y;

	if (cl_numstrisvert+4 > cl_maxstrisvert)
	{
		cl_maxstrisvert+=64*4;
		cl_strisvertv = Z_Realloc(cl_strisvertv, sizeof(*cl_strisvertv)*cl_maxstrisvert);
		cl_strisvertt = Z_Realloc(cl_strisvertt, sizeof(*cl_strisvertt)*cl_maxstrisvert);
		cl_strisvertc = Z_Realloc(cl_strisvertc, sizeof(*cl_strisvertc)*cl_maxstrisvert);
	}

	if (type->scalefactor == 1)
		scale = p->scale*0.25;
	else
	{
		scale = (p->org[0] - r_origin[0])*vpn[0] + (p->org[1] - r_origin[1])*vpn[1]
			+ (p->org[2] - r_origin[2])*vpn[2];
		scale = (scale*p->scale)*(type->invscalefactor) + p->scale * (type->scalefactor*250);
		if (scale < 20)
			scale = 0.25;
		else
			scale = 0.25 + scale * 0.001;
	}

	if (type->premul)
	{
		vec4_t rgba;
		float a = p->rgba[3];
		if (a > 1)
			a = 1;
		rgba[0] = p->rgba[0] * a;
		rgba[1] = p->rgba[1] * a;
		rgba[2] = p->rgba[2] * a;
		rgba[3] = (type->premul==2)?0:a;
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(rgba, cl_strisvertc[cl_numstrisvert+3]);
	}
	else
	{
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+0]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+1]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+2]);
		Vector4Copy(p->rgba, cl_strisvertc[cl_numstrisvert+3]);
	}

	Vector2Set(cl_strisvertt[cl_numstrisvert+0], p->s1, p->t1);
	Vector2Set(cl_strisvertt[cl_numstrisvert+1], p->s1, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+2], p->s2, p->t2);
	Vector2Set(cl_strisvertt[cl_numstrisvert+3], p->s2, p->t1);

	if (p->angle)
	{
		x = sin(p->angle)*scale;
		y = cos(p->angle)*scale;

		cl_strisvertv[cl_numstrisvert+0][0] = p->org[0] - x*pright[0] - y*pup[0];
		cl_strisvertv[cl_numstrisvert+0][1] = p->org[1] - x*pright[1] - y*pup[1];
		cl_strisvertv[cl_numstrisvert+0][2] = p->org[2] - x*pright[2] - y*pup[2];
		cl_strisvertv[cl_numstrisvert+1][0] = p->org[0] - y*pright[0] + x*pup[0];
		cl_strisvertv[cl_numstrisvert+1][1] = p->org[1] - y*pright[1] + x*pup[1];
		cl_strisvertv[cl_numstrisvert+1][2] = p->org[2] - y*pright[2] + x*pup[2];
		cl_strisvertv[cl_numstrisvert+2][0] = p->org[0] + x*pright[0] + y*pup[0];
		cl_strisvertv[cl_numstrisvert+2][1] = p->org[1] + x*pright[1] + y*pup[1];
		cl_strisvertv[cl_numstrisvert+2][2] = p->org[2] + x*pright[2] + y*pup[2];
		cl_strisvertv[cl_numstrisvert+3][0] = p->org[0] + y*pright[0] - x*pup[0];
		cl_strisvertv[cl_numstrisvert+3][1] = p->org[1] + y*pright[1] - x*pup[1];
		cl_strisvertv[cl_numstrisvert+3][2] = p->org[2] + y*pright[2] - x*pup[2];
	}
	else
	{
		VectorMA(p->org, -scale, pup, cl_strisvertv[cl_numstrisvert+0]);
		VectorMA(p->org, -scale, pright, cl_strisvertv[cl_numstrisvert+1]);
		VectorMA(p->org, scale, pup, cl_strisvertv[cl_numstrisvert+2]);
		VectorMA(p->org, scale, pright, cl_strisvertv[cl_numstrisvert+3]);
	}

	if (cl_numstrisidx+6 > cl_maxstrisidx)
	{
		cl_maxstrisidx += 64*6;
		cl_strisidx = Z_Realloc(cl_strisidx, sizeof(*cl_strisidx)*cl_maxstrisidx);
	}
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 1;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 0;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 2;
	cl_strisidx[cl_numstrisidx++] = (cl_numstrisvert - t->firstvert) + 3;

	cl_numstrisvert += 4;

	t->numvert += 4;
	t->numidx += 6;
}

static void PScript_DrawParticleTypes (void)
{
#if UNSUPPORTED
	float viewtranslation[16];
	static float lastviewmatrix[16];
#endif

	void (*bdraw)(scenetris_t *t, beamseg_t *p, plooks_t *type);
	void (*tdraw)(scenetris_t *t, particle_t *p, plooks_t *type);

	vec3_t oldorg;
	vec3_t stop, normal;
	part_type_t *type, *lastvalidtype;
	particle_t		*p, *kill;
	clippeddecal_t *d, *dkill;
	ramp_t *ramp;
	float grav;
	vec3_t friction;
	scenetris_t *scenetri;
	float dist;
	particle_t *kill_list, *kill_first;	//the kill list is to stop particles from being freed and reused whilst still in this loop
										//which is bad because beams need to find out when particles died. Reuse can do wierd things.
										//remember that they're not drawn instantly either.
	beamseg_t *b, *bkill;

	int traces=r_particle_tracelimit.value;
	int rampind;
	static float oldtime;
	static float flurrytime;
	qboolean doflurry;
	int batchflags;
	unsigned int i, o;

	if (r_plooksdirty)
	{
		int i, j;

		pe_default			= PScript_FindParticleType("PE_DEFAULT");
		pe_size2			= PScript_FindParticleType("PE_SIZE2");
		pe_size3			= PScript_FindParticleType("PE_SIZE3");
		pe_defaulttrail		= PScript_FindParticleType("PE_DEFAULTTRAIL");

		for (i = 0; i < numparticletypes; i++)
		{
			//set the fallback
			part_type[i].slooks = &part_type[i].looks;
			for (j = i-1; j-- > 0;)
			{
				if (!memcmp(&part_type[i].looks, &part_type[j].looks, sizeof(plooks_t)))
				{
					part_type[i].slooks = part_type[j].slooks;
					break;
				}
			}
		}
		r_plooksdirty = false;
		CL_RegisterParticles();
		PScript_RecalculateSkyTris();
	}

	pframetime = cl.time - oldtime;
	if (pframetime < 0)
		pframetime = 0;
	oldtime = cl.time;

	VectorScale (vup, 1.5, pup);
	VectorScale (vright, 1.5, pright);

	kill_list = kill_first = NULL;

	flurrytime -= pframetime;
	if (flurrytime < 0)
	{
		doflurry = true;
		flurrytime = 0.1+frandom()*0.3;
	}
	else
		doflurry = false;


	if (!free_decals)
	{
		//mark some as dead, so we can keep spawning new ones next frame.
		for (i = 0; i < 256; i++)
		{
			decals[r_decalrecycle].die = -1;
			if (++r_decalrecycle >= r_numdecals)
				r_decalrecycle = 0;
		}
	}
	if (!free_particles)
	{
		//mark some as dead.
		for (i = 0; i < 256; i++)
		{
			particles[r_particlerecycle].die = -1;
			if (++r_particlerecycle >= r_numparticles)
				r_particlerecycle = 0;
		}
	}

#if UNSUPPORTED
	{
		float tmp[16];
		Matrix4_Invert(r_refdef.m_view, tmp);
		Matrix4_Multiply(tmp, lastviewmatrix, viewtranslation);
		memcpy(lastviewmatrix, r_refdef.m_view, sizeof(tmp));
	}
#endif

	for (type = part_run_list, lastvalidtype = NULL; type != NULL; type = type->nexttorun)
	{
		if (type->clippeddecals)
		{
			if (cl_numstris && cl_stris[cl_numstris-1].texture == type->looks.texture && cl_stris[cl_numstris-1].blendmode == type->looks.blendmode && cl_stris[cl_numstris-1].beflags == 0)
				scenetri = &cl_stris[cl_numstris-1];
			else
			{
				if (cl_numstris == cl_maxstris)
				{
					cl_maxstris+=8;
					cl_stris = Z_Realloc(cl_stris, sizeof(*cl_stris)*cl_maxstris);
				}
				scenetri = &cl_stris[cl_numstris++];
				scenetri->texture = type->looks.texture;
				scenetri->blendmode = type->looks.blendmode;
				scenetri->beflags = 0;
				scenetri->firstidx = cl_numstrisidx;
				scenetri->firstvert = cl_numstrisvert;
				scenetri->numvert = 0;
				scenetri->numidx = 0;
			}

			for ( ;; )
			{
				dkill = type->clippeddecals;
				if (dkill && dkill->die < particletime)
				{
					type->clippeddecals = dkill->next;
					dkill->next = free_decals;
					free_decals = dkill;
					continue;
				}
				break;
			}
			for (d=type->clippeddecals ; d ; d=d->next)
			{
				for ( ;; )
				{
					dkill = d->next;
					if (dkill && dkill->die < particletime)
					{
						d->next = dkill->next;
						dkill->next = free_decals;
						free_decals = dkill;
						continue;
					}
					break;
				}


				if (d->die - particletime <= type->die)
				{
					switch (type->rampmode)
					{
					case RAMP_NEAREST:
						rampind = (int)(type->rampindexes * (type->die - (d->die - particletime)) / type->die);
						if (rampind >= type->rampindexes)
							rampind = type->rampindexes - 1;
						ramp = type->ramp + rampind;
						VectorCopy(ramp->rgb, d->rgba);
						d->rgba[3] = ramp->alpha;
						break;
					case RAMP_LERP:
						{
							float frac = (type->rampindexes * (type->die - (d->die - particletime)) / type->die);
							int s1, s2;
							s1 = frac;
							s2 = s1+1;
							if (s1 > type->rampindexes-1)
								s1 = type->rampindexes-1;
							if (s2 > type->rampindexes-1)
								s2 = type->rampindexes-1;
							frac -= s1;
							VectorInterpolate(type->ramp[s1].rgb, frac, type->ramp[s2].rgb, d->rgba);
							FloatInterpolate(type->ramp[s1].alpha, frac, type->ramp[s2].alpha, d->rgba[3]);
						}
						break;
					case RAMP_DELTA:	//particle ramps
						ramp = type->ramp + (int)(type->rampindexes * (type->die - (d->die - particletime)) / type->die);
						VectorMA(d->rgba, pframetime, ramp->rgb, d->rgba);
						d->rgba[3] -= pframetime*ramp->alpha;
						break;
					case RAMP_NONE:	//particle changes acording to it's preset properties.
						if (particletime < (d->die-type->die+type->rgbchangetime))
						{
							d->rgba[0] += pframetime*type->rgbchange[0];
							d->rgba[1] += pframetime*type->rgbchange[1];
							d->rgba[2] += pframetime*type->rgbchange[2];
						}
						d->rgba[3] += pframetime*type->alphachange;
					}
				}

				if (cl_numstrisvert - scenetri->firstvert >= MAX_INDICIES-6)
				{
					//generate a new mesh if the old one overflowed. yay smc...
					if (cl_numstris == cl_maxstris)
					{
						cl_maxstris+=8;
						cl_stris = Z_Realloc(cl_stris, sizeof(*cl_stris)*cl_maxstris);
					}
					scenetri = &cl_stris[cl_numstris++];
					scenetri->texture = scenetri[-1].texture;
					scenetri->blendmode = scenetri[-1].blendmode;
					scenetri->beflags = scenetri[-1].beflags;
					scenetri->firstidx = cl_numstrisidx;
					scenetri->firstvert = cl_numstrisvert;
					scenetri->numvert = 0;
					scenetri->numidx = 0;
				}
				R_AddClippedDecal(scenetri, d, type->slooks);
			}
		}

		bdraw = NULL;
		tdraw = NULL;
		batchflags = 0;

		// set drawing methods by type and cvars and hope branch
		// prediction takes care of the rest
		switch(type->looks.type)
		{
		default:
		case PT_INVISIBLE:
			break;
		case PT_BEAM:
			bdraw = R_DrawParticleBeam;
			break;
		case PT_CDECAL:
			break;
		case PT_UDECAL:
			tdraw = R_AddUnclippedDecal;
			break;
		case PT_NORMAL:
			tdraw = R_AddTexturedParticle;
			break;
		case PT_SPARK:
			tdraw = R_AddLineSparkParticle;
			batchflags = BEF_LINES;
			break;
		case PT_SPARKFAN:
			tdraw = R_AddFanSparkParticle;
			break;
		case PT_TEXTUREDSPARK:
			tdraw = R_AddTSparkParticle;
			break;
		}

		if (cl_numstris && cl_stris[cl_numstris-1].texture == type->looks.texture && cl_stris[cl_numstris-1].blendmode == type->looks.blendmode && cl_stris[cl_numstris-1].beflags == batchflags)
			scenetri = &cl_stris[cl_numstris-1];
		else
		{
			if (cl_numstris == cl_maxstris)
			{
				cl_maxstris+=8;
				cl_stris = Z_Realloc(cl_stris, sizeof(*cl_stris)*cl_maxstris);
			}
			scenetri = &cl_stris[cl_numstris++];
			scenetri->texture = type->looks.texture;
			scenetri->blendmode = type->looks.blendmode;
			scenetri->beflags = batchflags;
			scenetri->firstidx = cl_numstrisidx;
			scenetri->firstvert = cl_numstrisvert;
			scenetri->numvert = 0;
			scenetri->numidx = 0;
		}

		if (!type->die)
		{
			while ((p=type->particles))
			{
				if (scenetri && tdraw)
				{
					if (cl_numstrisvert - scenetri->firstvert >= MAX_INDICIES-6)
					{
						//generate a new mesh if the old one overflowed. yay smc...
						if (cl_numstris == cl_maxstris)
						{
							cl_maxstris+=8;
							cl_stris = Z_Realloc(cl_stris, sizeof(*cl_stris)*cl_maxstris);
						}
						scenetri = &cl_stris[cl_numstris++];
						scenetri->texture = scenetri[-1].texture;
						scenetri->blendmode = scenetri[-1].blendmode;
						scenetri->beflags = scenetri[-1].beflags;
						scenetri->firstidx = cl_numstrisidx;
						scenetri->firstvert = cl_numstrisvert;
						scenetri->numvert = 0;
						scenetri->numidx = 0;
					}
					tdraw(scenetri, p, type->slooks);
				}

				// make sure emitter runs at least once
				if (type->emit >= 0 && type->emitstart <= 0)
					PScript_RunParticleEffectState(p->org, p->vel, 1, type->emit, NULL);

#if UNSUPPORTED
				// make sure stain effect runs
				if (type->stainonimpact && r_bloodstains.value)
				{
					if (traces-->0&&CL_TraceLine(oldorg, p->org, stop, normal, NULL)<1)
					{
						Surf_AddStain(stop,	(p->rgba[1]*-10+p->rgba[2]*-10),
											(p->rgba[0]*-10+p->rgba[2]*-10),
											(p->rgba[0]*-10+p->rgba[1]*-10),
											30*p->rgba[3]*type->stainonimpact*r_bloodstains.value);
					}
				}
#endif

				type->particles = p->next;
//				p->next = free_particles;
//				free_particles = p;
				p->next = kill_list;
				kill_list = p;
				if (!kill_first) // branch here is probably faster than list traversal later
					kill_first = p;
			}

			if (type->beams)
			{
				b = type->beams;
			}

			while ((b=type->beams) && (b->flags & BS_DEAD))
			{
				type->beams = b->next;
				b->next = free_beams;
				free_beams = b;
			}

			while (b)
			{
				if (!(b->flags & BS_NODRAW))
				{
					// no BS_NODRAW implies b->next != NULL
					// BS_NODRAW should imply b->next == NULL or b->next->flags & BS_DEAD
					VectorCopy(b->next->p->org, stop);
					VectorCopy(b->p->org, oldorg);
					VectorSubtract(stop, oldorg, b->next->dir);
					VectorNormalize(b->next->dir);
					if (bdraw)
						bdraw(scenetri, b, type->slooks);
				}

				// clean up dead entries ahead of current
				for ( ;; )
				{
					bkill = b->next;
					if (bkill && (bkill->flags & BS_DEAD))
					{
						b->next = bkill->next;
						bkill->next = free_beams;
						free_beams = bkill;
						continue;
					}
					break;
				}

				b->flags |= BS_DEAD;
				b = b->next;
			}

			goto endtype;
		}

		//kill off early ones.
		if (type->emittime < 0)
		{
			for ( ;; )
			{
				kill = type->particles;
				if (kill && kill->die < particletime)
				{
					PScript_DelinkTrailstate(&kill->state.trailstate);
					type->particles = kill->next;
					kill->next = kill_list;
					kill_list = kill;
					if (!kill_first)
						kill_first = kill;
					continue;
				}
				break;
			}
		}
		else
		{
			for ( ;; )
			{
				kill = type->particles;
				if (kill && kill->die < particletime)
				{
					type->particles = kill->next;
					kill->next = kill_list;
					kill_list = kill;
					if (!kill_first)
						kill_first = kill;
					continue;
				}
				break;
			}
		}

		grav = type->gravity*pframetime;
		friction[0] = 1 - type->friction[0]*pframetime;
		friction[1] = 1 - type->friction[1]*pframetime;
		friction[2] = 1 - type->friction[2]*pframetime;

		for (p=type->particles ; p ; p=p->next)
		{
			if (type->emittime < 0)
			{
				for ( ;; )
				{
					kill = p->next;
					if (kill && kill->die < particletime)
					{
						PScript_DelinkTrailstate(&kill->state.trailstate);
						p->next = kill->next;
						kill->next = kill_list;
						kill_list = kill;
						if (!kill_first)
							kill_first = kill;
						continue;
					}
					break;
				}
			}
			else
			{
				for ( ;; )
				{
					kill = p->next;
					if (kill && kill->die < particletime)
					{
						p->next = kill->next;
						kill->next = kill_list;
						kill_list = kill;
						if (!kill_first)
							kill_first = kill;
						continue;
					}
					break;
				}
			}

			VectorCopy(p->org, oldorg);
			if (type->flags & PT_VELOCITY)
			{
				p->org[0] += p->vel[0]*pframetime;
				p->org[1] += p->vel[1]*pframetime;
				p->org[2] += p->vel[2]*pframetime;
				p->vel[2] -= grav;
				if (type->flags & PT_FRICTION)
				{
					p->vel[0] *= friction[0];
					p->vel[1] *= friction[1];
					p->vel[2] *= friction[2];
				}
				if (type->flurry && doflurry)
				{	//these should probably be partially synced, 
					p->vel[0] += crandom() * type->flurry;
					p->vel[1] += crandom() * type->flurry;
				}
			}

#if UNSUPPORTED
			if (type->viewspacefrac)
			{
				vec3_t tmp;
				Matrix4x4_CM_Transform3(viewtranslation, p->org, tmp);
				VectorInterpolate(p->org, type->viewspacefrac, tmp, p->org);
				Matrix4x4_CM_Transform3x3(viewtranslation, p->vel, tmp);
				VectorInterpolate(p->vel, type->viewspacefrac, tmp, p->vel);
			}
#endif

			p->angle += p->rotationspeed*pframetime;

			switch (type->rampmode)
			{
			case RAMP_NEAREST:
				rampind = (int)(type->rampindexes * (type->die - (p->die - particletime)) / type->die);
				if (rampind >= type->rampindexes)
					rampind = type->rampindexes - 1;
				ramp = type->ramp + rampind;
				VectorCopy(ramp->rgb, p->rgba);
				p->rgba[3] = ramp->alpha;
				p->scale = ramp->scale;
				break;
			case RAMP_LERP:
				{
					float frac = (type->rampindexes * (type->die - (p->die - particletime)) / type->die);
					int s1, s2;
					s1 = frac;
					s2 = s1+1;
					if (s1 > type->rampindexes-1)
						s1 = type->rampindexes-1;
					if (s2 > type->rampindexes-1)
						s2 = type->rampindexes-1;
					frac -= s1;
					VectorInterpolate(type->ramp[s1].rgb, frac, type->ramp[s2].rgb, p->rgba);
					FloatInterpolate(type->ramp[s1].alpha, frac, type->ramp[s2].alpha, p->rgba[3]);
					FloatInterpolate(type->ramp[s1].scale, frac, type->ramp[s2].scale, p->scale);
				}
				break;
			case RAMP_DELTA:	//particle ramps
				rampind = (int)(type->rampindexes * (type->die - (p->die - particletime)) / type->die);
				if (rampind >= type->rampindexes)
					rampind = type->rampindexes - 1;
				ramp = type->ramp + rampind;
				VectorMA(p->rgba, pframetime, ramp->rgb, p->rgba);
				p->rgba[3] -= pframetime*ramp->alpha;
				p->scale += pframetime*ramp->scale;
				break;
			case RAMP_NONE:	//particle changes acording to it's preset properties.
				if (particletime < (p->die-type->die+type->rgbchangetime))
				{
					p->rgba[0] += pframetime*type->rgbchange[0];
					p->rgba[1] += pframetime*type->rgbchange[1];
					p->rgba[2] += pframetime*type->rgbchange[2];
				}
				p->rgba[3] += pframetime*type->alphachange;
				p->scale += pframetime*type->scaledelta;
			}

			if (type->emit >= 0)
			{
				if (type->emittime < 0)
					PScript_ParticleTrail(oldorg, p->org, type->emit, 0, NULL, &p->state.trailstate);
				else if (p->state.nextemit < particletime)
				{
					p->state.nextemit = particletime + type->emittime + frandom()*type->emitrand;
					PScript_RunParticleEffectState(p->org, p->vel, 1, type->emit, NULL);
				}
			}

			if (type->cliptype>=0 && r_bouncysparks.value)
			{
				VectorSubtract(p->org, p->oldorg, stop);
				if (!type->clipbounce || DotProduct(stop,stop) > 10*10)
				{
					int e;
					if (traces-->0&&CL_TraceLine(p->oldorg, p->org, stop, normal, &e)<1)
					{
#if UNSUPPORTED
						if (type->stainonimpact && r_bloodstains.value)
							Surf_AddStain(stop,	p->rgba[1]*-10+p->rgba[2]*-10,
												p->rgba[0]*-10+p->rgba[2]*-10,
												p->rgba[0]*-10+p->rgba[1]*-10,
												30*p->rgba[3]*r_bloodstains.value);
#endif

						if (type->clipbounce < 0)
						{
							p->die = -1;
#ifdef USE_DECALS
							if (type->clipbounce == -2)
							{	//this type of particle splatters itself as a decal when it hits a wall.
								decalctx_t ctx;
								float m;
								vec3_t vec={0.5, 0.5, 0.431};
								qmodel_t *model;

								ctx.entity = e;
								if (!ctx.entity)
								{
									model = cl.worldmodel;
									VectorCopy(p->org, ctx.center);
								}
								else if (e)
								{	//this trace hit a door or something.
									entity_t *ent = CL_EntityNum(e);
									model = ent->model;
									VectorSubtract(p->org, ent->origin, ctx.center);
									//FIXME: rotate center+normal around entity.
								}
								else
									continue;	//err, no idea.

								VectorScale(normal, -1, ctx.normal);
								VectorNormalize(ctx.normal);

								VectorNormalize(vec);
								CrossProduct(ctx.normal, vec, ctx.tangent1);
								RotatePointAroundVector(ctx.tangent2, ctx.normal, ctx.tangent1, frandom()*360);
								CrossProduct(ctx.normal, ctx.tangent2, ctx.tangent1);

								VectorNormalize(ctx.tangent1);
								VectorNormalize(ctx.tangent2);

								ctx.ptype = type;
								ctx.scale1 = type->s2 - type->s1;
								ctx.bias1 = type->s1 + (ctx.scale1*0.5);
								ctx.scale2 = type->t2 - type->t1;
								ctx.bias2 = type->t1 + (ctx.scale2*0.5);
								m = p->scale*(1.5+frandom()*0.5)*0.5;	//decals should be a little bigger, for some reason.
								ctx.scale0 = 2.0 / m;
								ctx.scale1 /= m;
								ctx.scale2 /= m;

								//inserts decals through a callback.
								Mod_ClipDecal(model, ctx.center, ctx.normal, ctx.tangent2, ctx.tangent1, m, type->surfflagmask, type->surfflagmatch, PScript_AddDecals, &ctx);
							}
#endif
							continue;
						}
						else if (part_type + type->cliptype == type)
						{	//bounce
							dist = DotProduct(p->vel, normal);// * (-1-(rand()/(float)0x7fff)/2);
							dist *= -type->clipbounce;
							VectorMA(p->vel, dist, normal, p->vel);
							VectorCopy(stop, p->org);

							if (!*type->texname && VectorLength(p->vel)<1000*pframetime && type->looks.type == PT_NORMAL)
							{
								p->die = -1;
								continue;
							}
						}
						else
						{
							p->die = -1;
							VectorNormalize(p->vel);

							if (type->clipbounce)
							{
								VectorScale(normal, type->clipbounce, normal);
								PScript_RunParticleEffectState(stop, normal, type->clipcount/part_type[type->cliptype].count, type->cliptype, NULL);
							}
							else
								PScript_RunParticleEffectState(stop, p->vel, type->clipcount/part_type[type->cliptype].count, type->cliptype, NULL);
							continue;
						}
					}
					VectorCopy(p->org, p->oldorg);
				}
			}
#if UNSUPPORTED
			else if (type->stainonimpact && r_bloodstains.value)
			{
				VectorSubtract(p->org, p->oldorg, stop);
				if (DotProduct(stop,stop) > 10*10)
				{
					if (traces-->0&&CL_TraceLine(p->oldorg, p->org, stop, normal, NULL)<1)
					{
						if (type->stainonimpact < 0)
							Surf_AddStain(stop,	(p->rgba[0]*-1),
												(p->rgba[1]*-1),
												(p->rgba[2]*-1),
												p->scale*-type->stainonimpact*r_bloodstains.value);
						else
							Surf_AddStain(stop,	(p->rgba[1]*-10+p->rgba[2]*-10),
												(p->rgba[0]*-10+p->rgba[2]*-10),
												(p->rgba[0]*-10+p->rgba[1]*-10),
												30*p->rgba[3]*type->stainonimpact*r_bloodstains.value);
						p->die = -1;
						continue;
					}
					VectorCopy(p->org, p->oldorg);
				}
			}
#endif

			if (scenetri && tdraw)
			{
				if (cl_numstrisvert - scenetri->firstvert >= MAX_INDICIES-6)
				{
					//generate a new mesh if the old one overflowed. yay smc...
					if (cl_numstris == cl_maxstris)
					{
						cl_maxstris+=8;
						cl_stris = Z_Realloc(cl_stris, sizeof(*cl_stris)*cl_maxstris);
					}
					scenetri = &cl_stris[cl_numstris++];
					scenetri->texture = scenetri[-1].texture;
					scenetri->blendmode = scenetri[-1].blendmode;
					scenetri->beflags = scenetri[-1].beflags;
					scenetri->firstidx = cl_numstrisidx;
					scenetri->firstvert = cl_numstrisvert;
					scenetri->numvert = 0;
					scenetri->numidx = 0;
				}
				tdraw(scenetri, p, type->slooks);
			}
		}

		// beams are dealt with here

		// kill early entries
		for ( ;; )
		{
			bkill = type->beams;
			if (bkill && (bkill->flags & BS_DEAD || bkill->p->die < particletime) && !(bkill->flags & BS_LASTSEG))
			{
				type->beams = bkill->next;
				bkill->next = free_beams;
				free_beams = bkill;
				continue;
			}
			break;
		}


		b = type->beams;
		if (b)
		{
			for ( ;; )
			{
				if (b->next)
				{
					// mark dead entries
					if (b->flags & (BS_LASTSEG|BS_DEAD|BS_NODRAW))
					{
						// kill some more dead entries
						for ( ;; )
						{
							bkill = b->next;
							if (bkill && (bkill->flags & BS_DEAD) && !(bkill->flags & BS_LASTSEG))
							{
								b->next = bkill->next;
								bkill->next = free_beams;
								free_beams = bkill;
								continue;
							}
							break;
						}

						if (!bkill) // have to check so we don't hit NULL->next
							continue;
					}
					else
					{
						if (!(b->next->flags & BS_DEAD))
						{
							VectorCopy(b->next->p->org, stop);
							VectorCopy(b->p->org, oldorg);
							VectorSubtract(stop, oldorg, b->next->dir);
							VectorNormalize(b->next->dir);
							if (bdraw)
							{
								VectorAdd(stop, oldorg, stop);
								VectorScale(stop, 0.5, stop);
#ifdef UNSUPPORTED
								RQ_AddDistReorder(bdraw, b, type->slooks, stop);
#endif
							}
						}

						if (b->p->die < particletime)
							b->flags |= BS_DEAD;
					}
				}
				else
				{
					if (b->p->die < particletime) // end of the list check
						b->flags |= BS_DEAD;

					break;
				}

				if (b->p->die < particletime)
					b->flags |= BS_DEAD;

				b = b->next;
			}
		}

endtype:

		// delete from run list if necessary
		if (!type->particles && !type->beams && !type->clippeddecals)
		{
			if (!lastvalidtype)
				part_run_list = type->nexttorun;
			else
				lastvalidtype->nexttorun = type->nexttorun;
			type->state &= ~PS_INRUNLIST;
		}
		else
			lastvalidtype = type;
	}

	// lazy delete for particles is done here
	if (kill_list)
	{
		kill_first->next = free_particles;
		free_particles = kill_list;
	}

	particletime += pframetime;

	if (!cl_numstris)
		return;

	Fog_DisableGFog (); //additive stuff looks like arse. this stuff should really be done in a fragment shader, although we could also fake things here

	//mess around with tmu states
	GL_DisableMultitexture();
	glEnable(GL_TEXTURE_2D);
	glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);	//make sure the colour values are used.

	//other states
	glEnable(GL_BLEND);	//yes, we need blending
	glDisable(GL_ALPHA_TEST);
	glDepthMask(GL_FALSE);	//don't write depth. this prevents the particles from fighting each other, although alpha-blended particles will still be weird.
	GL_PolygonOffset (OFFSET_DECAL);
	glDisable(GL_CULL_FACE);

	//mess around with where glDrawElements gets its data from
	GL_BindBuffer (GL_ARRAY_BUFFER, 0);
	GL_BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
	GL_ClientActiveTextureFunc (GL_TEXTURE0_ARB);
	glEnableClientState (GL_VERTEX_ARRAY);
	glEnableClientState (GL_TEXTURE_COORD_ARRAY);
	glEnableClientState (GL_COLOR_ARRAY);

	for (o = 0; o < 3; o++)
	{
		static const struct
		{
			unsigned int order;
			GLenum srcf;
			GLenum dstf;
		} factors[] = {
			{1, GL_SRC_ALPHA,	GL_ONE_MINUS_SRC_ALPHA},	//BM_BLEND
			{1, GL_SRC_COLOR,	GL_ONE_MINUS_SRC_COLOR},	//BM_BLENDCOLOUR
			{2, GL_SRC_ALPHA,	GL_ONE},					//BM_ADDA
			{2, GL_SRC_COLOR,	GL_ONE},					//BM_ADDC	sort-additive
			{0, GL_SRC_ALPHA,	GL_ONE_MINUS_SRC_COLOR},	//BM_SUBTRACT
			{0, GL_ZERO,		GL_ONE_MINUS_SRC_ALPHA},	//BM_INVMODA	sort-decal
			{0, GL_ZERO,		GL_ONE_MINUS_SRC_COLOR},	//BM_INVMODC	sort-decal
			{2, GL_ONE,			GL_ONE_MINUS_SRC_ALPHA}		//BM_PREMUL	sort-additive
		};

		for (i = 0; i < cl_numstris; i++)
		{
			if (factors[cl_stris[i].blendmode].order != o)
				continue;

			glBlendFunc(factors[cl_stris[i].blendmode].srcf, factors[cl_stris[i].blendmode].dstf);

			glVertexPointer(3, GL_FLOAT, sizeof(*cl_strisvertv), cl_strisvertv + cl_stris[i].firstvert);
			glTexCoordPointer(2, GL_FLOAT, sizeof(*cl_strisvertt), cl_strisvertt + cl_stris[i].firstvert);
			glColorPointer(4, GL_FLOAT, sizeof(*cl_strisvertc), cl_strisvertc + cl_stris[i].firstvert);
			if (cl_stris[i].beflags & BEF_LINES)
			{
				glDisable(GL_TEXTURE_2D);
				glShadeModel(GL_SMOOTH);
//				glDrawRangeElements(GL_LINES, 0, cl_stris[i].numvert, cl_stris[i].numidx, GL_UNSIGNED_SHORT, cl_strisidx + cl_stris[i].firstidx);
				glDrawElements(GL_LINES, cl_stris[i].numidx, GL_UNSIGNED_SHORT, cl_strisidx + cl_stris[i].firstidx);
				glEnable(GL_TEXTURE_2D);
			}
			else
			{
				GL_Bind(cl_stris[i].texture);
//				glDrawRangeElements(GL_TRIANGLES, 0, cl_stris[i].numvert, cl_stris[i].numidx, GL_UNSIGNED_SHORT, cl_strisidx + cl_stris[i].firstidx);
				glDrawElements(GL_TRIANGLES, cl_stris[i].numidx, GL_UNSIGNED_SHORT, cl_strisidx + cl_stris[i].firstidx);
			}
		}
	}
	glDisableClientState (GL_VERTEX_ARRAY);
	glDisableClientState (GL_TEXTURE_COORD_ARRAY);
	glDisableClientState (GL_COLOR_ARRAY);
	glEnable(GL_TEXTURE_2D);
	glDisable(GL_BLEND);
	glShadeModel(GL_FLAT);
	glDepthMask(GL_TRUE);
	glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	GL_PolygonOffset (OFFSET_NONE);
	cl_numstris = 0;
	cl_numstrisvert = 0;
	cl_numstrisidx = 0;
}

/*
===============
R_DrawParticles
===============
*/
void PScript_DrawParticles (void)
{
	P_AddRainParticles();

	PScript_DrawParticleTypes();

//	if (fallback)
//		fallback->DrawParticles();
}

#endif
#endif


