Func precipitation

Template:Base brush It creates rain, snow, or ash inside its volume.

Rain particles created by func_precipitation in Counter-Strike: Global Offensive

Keyvalues

Density (0-100%) (renderamt) <integer>

This is the amount of particles that fall down from top side of brush. However distance from first particle to second depends on a brush volume size!

Color (R G B) (rendercolor) <color255>

Color added to sprites which are rendered transparently (probably rain and snow particles)

Precipitation Type (preciptype) <choices>

Precipitation type

• 0: Rain. Rain falling. Example: CS:S map "de_aztec"
• 1: Snow. Identical to Rain, use "Snowfall" instead
• 2: Ash. Ash falling. Appears with missing textures in most games other than EP1. A fix can be applied by extracting all 3 materials/effects/fleck_ash* textures and materials/effects/ember_swirling001 from ep1_pak_dir.vpk. Example: Used throughout EP1
• 3: Snowfall. Snow falling. Example: DoD:S map "dod_colmar".
• 4: Particle Rain. (in all games since ) Particle rain with slight mist and refraction. Examples: Left 4 Dead's "No Mercy" campaign, CS:GO map "de_aztec"
• 5: Particle Ash. (in all games since ) Particle ash. Example: Left 4 Dead's "Dead Air" campaign.
• 6: Particle Rain Storm. (in all games since ) Particle rain with no mist/refraction and more angled particles. Alpha values over 100 enable an additional flying leaves effect seen during the storm event. Example: Left 4 Dead 2's "Hard Rain" and "The Passing" campaigns.
• 7: Particle Snow. (in all games since ) Particle snowfall. Example: CS:GO map "ar_monastery"
• 7: Particle Bugs. (only in ) Particle flying bugs. In later games, this value is used by Particle Snow instead. Example: Left 4 Dead 2's "Swamp Fever" campaign.
• 8: Particle Smoke. (only in ) Particle smoke with variable density. Example: Left 4 Dead 2's "Dead Center" campaign.

Name (targetname) <string>[ Edit ]

The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g. parentname or target).
Also displayed in Hammer's 2D views and Entity Report.

See also:  Generic Keyvalues, Inputs and Outputs available to all entities

Inputs

Alpha  !FGD

Changes the density of the rain, and may add additional particle effects like fog or leafs. It accepts inputs from -1 to 255.

Related Console Commands

There are a number of console commands that control precipitation rendering. See the Precipitation issues page for details on various issues and workarounds involving this entity.

Command Name	Value	Description
r_RainParticleDensity	<float>	Set the density to enable or disable any precipitation particle. Value 1 to enable and 0 to disable.
r_rainalpha	<float>	Adjusts transparency of rain particles.
r_rainProfile	<bool>	Displays stats on rain rendering costs.
r_RainHack	<bool>	Overrides density values set in Hammer. Enabling will result in longer and more dense rain than at 100%. Can help solve visibility issues. Note:Rain may fall through brushes when this command is enabled.
r_rainspeed	<float>	Lower values will cause rain to disappear sooner and fall slower. Default value is 600.0f
r_RainSideVel	<float>	Controls sideways movement of the rain particles.
r_RainSimulate	<bool>	Toggles animation on the rain; freezes the rain when set to 0.
r_rainwidth	<float>	Widens the rain's alpha to desired value. Default value is 0.5
r_RainRadius	<float>	Distance from the brush where the rain starts/stops rendering.
r_rainlength	<float>	Changes the length of the rain particles. Default value is 0.1f
r_RainSplashPercentage	<float>	Percent chance of splash particles spawning when a particle is used.
r_raindensity	<float>	No function. Use r_RainParticleDensity instead.
r_rainalphapow	<float>	Raises the value of r_rainalpha exponentially. Confirm:Some say this has no effect?

Warning:func_precipitation brushes should not overlap func_smokevolume brushes, as it can freeze the game. The exact cause of this is not clear.

Note:The precipitation created by this entity is not gpu-accelerated. In resource-intensive multiplayer games such as , it's recommended to use a particle system to create weather effects rather than relying on this entity.

See Also

• func_precipitation_blocker