Spawn Over Distance
Menu Path: Spawn > Custom > Spawn Over Distance
The Spawn Over Distance Block calculates the displacement of a position relative to the previous frame's value. Depending on this size of the displacement and the Rate Per Unit property, the system spawns a particle.
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Block compatibility
This Block is compatible with the following Contexts:
Block properties
Input |
Type |
Description |
Position |
Vector3 |
The reference position to use to check whether to spawn a particle or not. The system automatically stores this value in the position spawn state attribute. It stores the previous value in the oldPosition spawn state attribute. |
Rate per Unit |
float |
The number of particles to spawn per unit of displacement. |
Velocity Threshold |
float |
The maximum velocity to consider for spawning. If the position moves faster than this threshold, the Block does not spawn anymore particles. |
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 > SpawnOverDistance.cs.
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