Calculating WaterDepth

[Cobalt]

[Spike]

what are you actually trying to do? work out how much water there is above the player?
that's not going to work with traceline. traceline can only detect solids, it can't find water.
trace_inwater / trace_inopen merely state that *part* of the trace was inside water/empty. if they're both set then you know that it crosses a water surface, but you don't know where. probably you'll have to bisect it until you find where the surface is.

basically trace up from 0 to 1000 units. if it crosses into air, try 0 to 500, if it doesn't, try 500 to 750, etc, until the range is small enough that you don't care too much.
or you can spam some pointcontents calls.

[Cobalt]

Hrm, I thought the trace_fraction would reflect how much of the trace took place before it encountered the non water content.

There is also : trace_plane_dist , but it does not seem to be well documented in any QC stuff I can find.

[Spike]

like I said. traceline is never blocked by 'nothing', thus the trace will happily leave the water and give you nice fractions and stuff. it can never impact on the inside of the water surface.

trace_plane_dist describes the wall that got hit. its not really very useful, so noone uses it. go research standard plane equations, and then negate the distance, and you'll have a better understanding of this result value.

[Cobalt]

[Seven]

Hello Cobalt,

If I understood you correctly, you want to write qc for detecting a water surface, and then start a calculation to compare the players origin with it ?
Qrv did the 1st part here for you:
viewtopic.php?f=2&t=4397

I also use this and it works great.
The only thing is, that you should not do it every frame as it will become a bit performance hungry then.
You can adjust its accuracy and thereby influence directly the performance impact.

For Darkplaces (or other supporting engines), DP_SV_ENTITYCONTENTSTRANSITION might be better though.

Best regards.

[Cobalt]

[PrimalLove]