Control Point (particles)

Control Points are used to pass data into and between particle systems. Each one can store any or all of the following:

• Its number (0 to 63)
• An attachment type
• An attachment point
• An origin
• A matrix (usually for rotation)
• An associated entity

The meaning of these values are flexible however, and "cheats" such storing an RGB colour in the origin value are supported.

Particle systems inherit the control points of their parents.

Note:Control Points 0 (vecOrigin) and 1 (vecStart) are defined when dispatching from the server. Be aware of this when choosing which CPs to use in your system.

Defining

Within a particle system

Use one of these Operators:

• Set Control Point Positions
• Set Control Point To Particles' Center
• Set Control Point To Player
• Set child control points from particle positions
• Movement Match Particle Velocities

In a map

Fill in the fields of the info_particle_system used to spawn the system.

In code

See Particles In Code#Control points.

In a QC

Confirm:It is not possible to configure control points when compiling a model.

However, see the Position on Model Random initializer.

Mapping to other values

Mapping functions

Operators

Remap Control Point to Scalar

Remap Distance to Control Point to Scalar

Remap Distance Between Two Control Points to Scalar

Initializers

Remap Control Point to Vector

Note:There is no 'CP to Vector' operator, just this initializer. The reasons for this omission are not clear.

Remap Control Point to Scalar

Remap Initial Distance to Control Point to Scalar

Potential targets

Scalar

Lifespan

Creation time

Radius

Roll speed

Alpha

Alpha alternate

Sequence number

Sequence number 1

Trail length

Particle ID

Yaw

Vector

Position

Roll

RGB Colour (normalised)

Other

These sample values from CPs rather than remapping their literal values:

• Color Light from Control Point
• Velocity Inherit from Control Point

Spawning children at control points

By default, child systems spawn at their parent's origin. To change this, use one of the "Position" Initializers with a reference to the appropriate CP number.