env_fire
env_fire is a point entity available in all 
Source games. It handles a single flame (_firesmoke) at its origin. The flame causes heat "damage" to other env_fire entities around it and will eventually ignite them, causing the fire to spread. env_firesource will add heat damage to nearby env_fire entities and ignite them/maintain ignition.
Note:The fire may fall through the world on spawn if placed exactly at ground level. Place it a little bit above the ground to fix this.
Bug*:While still available, it does not have particle effects in 
Team Fortress 2. This method is recommended instead. Class hierarchy
|
|---|
| CFire |
fire.cpp
|
Keyvalues
- Name
(targetname)<string> - The name that other entities refer to this entity by, via Inputs/Outputs or other keyvalues (e.g.
parentnameortarget).
Also displayed in Hammer's 2D views and Entity Report.See also: Generic Keyvalues, Inputs and Outputs available to all entities
- Duration
(health)<integer> - Amount of time the fire will burn.
- Size
(firesize)<integer> - Height (in world units) of the flame.
- Attack
(fireattack)<integer> - Amount of time the fire takes to grow to full strength.
- Type
(firetype)<choices> - Either Natural or Plasma. Natural is a general all purpose flame, like a wood fire.
- 0: Natural
- 1: Plasma
Warning:Effects for this type do not exist!
- Ignition Point
(ignitionpoint)<float> - Amount of heat 'damage' to take before this flame should ignite.
- Damage Scale
(damagescale)<float> - Multiplier of the burn damage done by the flame.
- Light Color
(LightColor)<color255> (in all games since
) - Color of dynamic light for this fire.
- Light Radius Scale
(LightRadiusScale)<float> (in all games since) - Multiplier for the glow radius.
- Light Brightness
(LightBrightness)<integer> (in all games since) - Integer exponent for the glow brightness.
- Loop sound
(LoopSound)<sound> (in all games since) - Looping sound to play while this fire is burning.
- Ignite sound
(IgniteSound)<sound> (in all games since) - One shot sound to play when the fire starts.
- Start Disabled
(StartDisabled)<boolean> - Stay dormant until activated.
Note:Unless you also checked the "Start On" flag, env_fire will not automatically ignite even if you set this keyvalue to No. Likewise, env_fire will still ignite if you have the "Start On" flag checked, even if this key value is set to Yes.Flags
Infinite Duration : [1]
Note:In Alien Swarm, an env_fire cannot be extinguished with the fire extinguisher unless Infinite Duration is set.Smokeless : [2]
Start On : [4]
Start Full : [8]
How?: as in, start out ready to ignite as soon as it's damaged?
Don't drop : [16]
No glow : [32]
Delete when out : [128]
Visible from above : [256] (removed since )
No sound : [256] (in all games since )
No ignite sound : [512] (in all games since )
No fueling once lit : [1024] (in all games since )
Fast burn think : [2048] (in all games since )
Inputs
StartFire- Start the fire.
Extinguish<float>- Puts out the fire permanently in the number of seconds specified.
ExtinguishTemporary<float>- Puts out the fire temporarily in the number of seconds specified.
EnableDisable:
Enable / Disable- Enable/disable this entity from performing its task. It might also disappear from view.
Outputs
OnIgnited- Fires when the fire is first ignited.
OnExtinguished- Fires when the fire is fully extinguished.
ConVars/Commands
| Cvar/Command | Parameters or default value | Descriptor | Effect |
|---|---|---|---|
fire_maxabsorb | 50 | Arbitrary number (float) | Upper limit for how much heat "damage" a fire can take before the damage begins to force the flame to grow. Heat is usually absorbed from other env_fires. |
fire_absorbrate | 3 | Multiplier (float) | Scalar for how fast fires can absorb heat. |
fire_extscale | 12 | Multiplier (float) | Effectively only a scalar for the Strength of an env_extinguisherjet. |
fire_extabsorb | 5 | Multiplier (float) | Todo: Effect description. |
fire_heatscale | 1.0 | Multiplier (float) | Scalar for how much damage a fire can do (both to fires and other objects such as the player). |
fire_incomingheatscale | 0.1 | Multiplier (float) | Scalar for how much heat a fire can take from other fires if it is already ignited. |
fire_dmgscale | 0.1 | Multiplier (float) | Todo: Effect description. |
fire_dmgbase | 1 | Health Amount | Base damage that a fire does to objects such as the player. This amount multiplies depending on the user's difficulty setting:
|
fire_growthrate | 1.0 | Multiplier (float) | Scalar for how much heat a fire can passively add to itself at once. Thinking interval is 0.1 seconds. |
fire_dmginterval | 1.0 | Seconds | Once a fire has damaged something, it will wait this long before it can damage anything again. |
