Particle System Renderers

From Valve Developer Community

render_animated_sprites

Renders animated sprites of varying orientations.

animation rate

Rate at which to animate particles (???).

orientation_type

Various orientation types:

• 0 - Billboarded (always face camera)
• 1 - Fix Z and rotate along X and Y
• 2 - Fix X and Y and rotate along Z (always face up)

render_sprite_trail

Renders animated sprites with trails based on their velocity.

render_rope

Renders all particles in the system into one continuous "rope", the smoothness can be adjusted by changing texel_size and subdivision_count. Killing particles will cause the rope to instantly flick to adjust the rope to remain continuous, so random lifetimes and continuous emitters can look poor, depending on the effect.