func_smokevolume
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func_smokevolume creates a mist effect in 
d1_eli_01. One is also used in the airlock.Code classes:
CFuncSmokeVolumeCBaseParticleEntityCBaseEntity(all ents)
func_smokevolume is a brush entity present in all Source games. It spawns sprites within its volume. Commonly used for large, localized areas of fog.
Warning: func_smokevolumes should not intersect with func_precipitations, as it can freeze the game. The exact cause of this is not clear.
Note: Drawing large numbers of transparent sprites can be expensive.
Flags[edit | edit source]
- 1: Blend Colors
Keyvalues[edit | edit source]
- Particle Color1 (R G B)
(Color1)<color255> - Color 1. If Blend Colors is checked, sprites can be blends between these two colors. If not, they will either be one or the other.
- Particle Color2 (R G B)
(Color2)<color255> - Color 2. If Blend Colors is checked, sprites can be blends between these two colors. If not, they will either be one or the other.
- Material
(material)<material> - What the sprites will appear as.
- Particle Draw Width
(ParticleDrawWidth)<float> - Size of the sprites.
- Particle Spacing Distance
(ParticleSpacingDistance)<float> - The distance between the particles inside the volume. The lower the number, the denser the particles, and the more overdraw (drawing a pixel multiple times) there will be.
- Density Ramp Speed
(DensityRampSpeed)<float> - How quickly the Density changes.
- Rotation Speed
(RotationSpeed)<float> - The speed that the particles should rotate, in degrees per second.
- Movement Speed
(MovementSpeed)<float> - The speed that the particles should move around, in units per second.
- Density
(Density)<float> - Sprite transparency. Ranges from 0.0 (fully invisible, does not render at all) to 1.0.
- Max Draw Distance
(MaxDrawDistance)<float>(available in all games since
) - How far away the player can be from any part of the brush while still rendering the sprites. 0 means any distance.
