Increment Strip Index On Start
Menu Path: Spawn > Custom > Increment Strip Index On Start
The Increment Strip Index On Start Block helps to manage the initialization of Particle Strips. A Particle Strip comprises of linked groups of particles and the amount of these groups is defined by the strip's stripIndex attribute. Each particle with the same stripIndex attribute will a be part of the same strip, incrementing the stripIndex will create a new strip. This Block increments the Particle Strip's stripIndex attribute (unsigned integer) each time the start event of the Spawn Context triggers. This adds a new linked group of particles to the Particle Strip.
The stripIndex attribute returns to zero when a stop event triggers or if stripIndex reaches the Strip Max Count. This goes back to the first strip group index.
A VFX Graph with an Increment Strip Index On Start Block, resulting in colorful particles spawning.
Block compatibility
This Block is compatible with the following Contexts:
Block properties
| Input | Type | Description |
|---|---|---|
| Strip Max Count | uint | The maximum value stripIndex can be. The range that stripIndex can be is between zero and this value minus one. |
Remarks
This Block uses a VFXSpawnerCallback interface and you can use it as a reference to create your own implementation. The implementation for this Block is in com.unity.visualeffectgraph > Runtime > CustomSpawners > IncrementStripIndexOnStart.cs.