L4D2 Rain storm doesn't work

All I want are raindrops that fall and emit do their sprite animation upon contact. I placed a func_precipitation in the sky, regular rain works great, particle rain does not. The second I switch to particle rain its over. I want the sweet stuff just like from hard rain campaign. Any advice? I follow the tutorials but none of them work. I edited the instance of c4m4_storm_ent and deleted all the instances within that file because they messed everything up supposedly. Could that cause problems? Thanks.

Ok, new update. I set the shaders to high, and leaves fall from the sky, which is cool, I guess. Off in the distance, above my bsp brushes (possibly at the origin) is a single point where all rain droplets are colliding. I'm not sure what to do. Advice? Here is the compile log without RAD compiled.

---

---

Running command: cd "c:\program files\steam\steamapps\common\left 4 dead 2\bin"

---

---

Running command: "c:\program files\steam\steamapps\common\left 4 dead 2\bin\vbsp
.exe" -game "c:\program files\steam\steamapps\common\left 4 dead 2\left4dead2" "
C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc\test.vm
f"

---

Valve Software - vbsp.exe (Apr 21 2010)
2 threads
materialPath: c:\program files\steam\steamapps\common\left 4 dead 2\left4dead2\m
aterials
Loading C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.vmf
***need to set $abovewater for material dev/dev_water2_cheap
***need to set $abovewater for material dev/dev_water2_cheap
Patching WVT material: maps/test/nature/blend_dirt_mud_01_wvt_patch
fixing up env_cubemap materials on brush sides...
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
ProcessBlock_Thread: 0...1...2...3...4...5...6...7...8...9...10 (0)
Processing areas...done (0)
Building Faces...done (0)
FixTjuncs...
PruneNodes...
WriteBSP...
done (0)
writing C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.prt...Building visibility clusters...
done (0)
Finding displacement neighbors...
Finding lightmap sample positions...
Displacement Alpha : 0...1...2...3...4...5...6...7...8...9...10
Building Physics collision data...
done (1) (199265 bytes)
Cannot build Physics2 data
-----------
DataLinker total stream size 0.0 KiB
Placing detail props : 0...1...2...3...4...5...6...7...8...9...10
Water found with no water_lod_control entity, creating a default one.
Compacting texture/material tables...
Reduced 394 texinfos to 186
Reduced 88 texdatas to 64 (3468 bytes to 2590)
Writing C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.bsp
1 second elapsed

---

Running command: cd "c:\program files\steam\steamapps\common\left 4 dead 2\bin"

---

---

Running command: "c:\program files\steam\steamapps\common\left 4 dead 2\bin\vvis
.exe" -game "c:\program files\steam\steamapps\common\left 4 dead 2\left4dead2" -
fast "C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc\t
est"

---

Valve Software - vvis.exe (Apr 21 2010)
fastvis = true
2 threads
reading c:\program files\steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.bsp
max farz in all env_fog_controller entities: -1.000000 (used for radial vis)
reading c:\program files\steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.prt
471 portalclusters
1151 numportals
BasePortalVis: 0...1...2...3...4...5...6...7...8...9...10 (0)
Optimized: 10748 visible clusters (0.00%)
Total clusters visible: 102103
Average clusters visible: 216
Building PAS...
Average clusters audible: 437
visdatasize:52707 compressed from 60288
writing c:\program files\steam\steamapps\common\left 4 dead 2\sdk_content\mapsrc
\test.bsp
0 seconds elapsed

---

Running command: copy "C:\Program Files\Steam\steamapps\common\left 4 dead 2\sdk
_content\mapsrc\test.bsp" "c:\program files\steam\steamapps\common\left 4 dead 2
\left4dead2\maps\test.bsp"

---

Finished. Press a key to close.

Found the problem. Particle rain/rainstorm both require a very high skybox ceiling to work. I believe they were hitting the top of the un-rendered side of the skybox, and freaking out and teleporting to the origin.

Sorry we couldn't help you here. But glad to know. However, that rain particle cloud looks pretty cool. kah-may-ha-may-HA!

Yea, I do happen to remember func_precipitation needing some kind of space above (by how much, I don't know) in order to function properly. So many things that aren't documented...

Oh, be sure to add a water_lod_control entity in your map!

best of luck to you and your map.

---

Blog: www.playingarchitecture.net
LinkedIn: Eric Lancon
Twitter:@Riven202

Riven said:
kah-may-ha-may-HA!

I keep hearing that all the time at school

And yeah I've noticed the lack of water_lod_control's in that compile log as well

---

Youtube Channel: https://www.youtube.com/c/Nibgames

Hello ...

I too have the same problem could you tell me how you solved please that I can not?

As a test I created a room with walls and ceiling to 32 using the texture skybox3d and the floor are always 32 but with the texture concrete_floor_02
then I used the trigger throughout the room changed the class into func_precipitation
density at 100
precipitation type: particle rain storm

end, but not even the rain falls, however if instead of using particle rain storm rain the rain but not the sketches you see how I can fix?

I was forgetting I put entities water_lod_control

Sorry for the English I'm using google transla...

Help please ...