16 lines
728 B
Markdown
16 lines
728 B
Markdown
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# Spawner Callbacks
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**Note:** This feature is currently experimental and is subject to change in later major versions. To use this feature, enable **Experimental Operators/Blocks** in the **Visual Effects** tab of your Project's Preferences.
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Spawner Callbacks is a C# API that allows you to define custom runtime behavior and create new Blocks for use in Spawn Contexts.
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Spawner Callbacks allow you to:
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* Control the Spawn Context state (Playing, Stopped, Delayed).
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* Read/Write the Output Spawn Count.
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* Read/Write SpawnEvent Attributes.
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## Writing Spawner Callbacks
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The full Spawner Callbacks API reference is available [here](https://docs.unity3d.com/2019.3/Documentation/ScriptReference/VFX.VFXSpawnerCallbacks.html).
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