From Valve Developer Community
- Start Disabled
- Don't create particles when spawned.
- Particle Color (R G B)
- Color of the particles.
- Particle Per Second
- Number of particles to spawn, per second.
- Maximum Particle Speed
- Maximum speed that the particles can move after spawning.
- Minimum Particle Lifetime
- Minimum number of seconds until each particle dies. Particles live for a random duration between this and 'Maximum Particle Lifetime'.
- Maximum Particle Lifetime
- Maximum number of seconds until each particle dies. Particles live for a random duration between 'Minimum Particle Lifetime' and this.
- Maximum Visible Distance
- Maximum distance at which particles are visible. They fade to translucent at this distance.
- When set, this entity spawns the number of particles in SpawnRate immediately, and then goes inactive.