Skip to content
OpenTS Manual

SpawnSparkPercentage

The chance that a spark system throws a burst on any one frame.

Specification
Applies to
ParticleSystemType
File
rules.ini
Section
[<ObjectType ID>]
Value
floating point
When omitted
0.0

A fraction from 0 to 1, rolled once per frame while the system still has SparkSpawnFrames left. At 1 every frame throws a burst, and at .4 about two frames in five do, which is what makes a welding shower stutter rather than pour. Only the Spark behavior reads it.

rules.ini
[MySparkSys] ; a ParticleSystemType registered in [ParticleSystems]
BehavesLike=Spark
HoldsWhat=MySpark ; a ParticleType registered in [Particles]
ParticleCap=12
SparkSpawnFrames=20
SpawnSparkPercentage=.4 ; roughly two frames in five throw

The roll is skipped on the system’s final spark frame, which throws unconditionally, so a system whose rolls all fail still produces that one burst before it clears away. A figure of 1 or above throws on every frame.

See also — BehavesLike, SparkSpawnFrames, ParticleCap