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.
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. |
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 > SpawnOverDistance.cs.