> For the complete documentation index, see [llms.txt](https://sunfish-studios.gitbook.io/main/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sunfish-studios.gitbook.io/main/vehicle/animation-behaviours/bobber-trigger.md).
# Bobber Trigger
A `StateMachineBehaviour` that triggers bobber spawn or retreat events at specific animation times. Works with any component implementing `IBobberSpawner`.
✅ **Requires**:
* At least one `IBobberSpawner` on the Animator’s parent or children (e.g., `FishingCaster`).
***
🔧 **Inspector Settings**
**Effect Type**\
Determines which event this behaviour controls:
* **Spawn**: Triggers `OnBobberSpawn()` at a set animation time.
* **Retreat**: Triggers `OnBobberRetreat()` at a set animation time.
**Spawn Time** *(visible only if Effect Type = Spawn)*\
Normalized animation time (0.0–1.0) when the bobber should appear.
**Retreat Time** *(visible only if Effect Type = Retreat)*\
Normalized animation time (0.0–1.0) when the bobber should disappear.
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📈 **Key Behavior**
**Activation**
* On state enter: Notifies all `IBobberSpawner` instances that a bobber animation has started.
* During update: Compares current normalized animation time against the configured trigger time.
* On state exit: Notifies spawners that the animation ended—*but only if exiting to a different state* (skips self-transitions).
***
💡 **Notes**
* Designed to be attached to specific animation states (e.g., “Fishing Rod Cast” and “Fishing End”).
* [**BobberController** ](/main/vehicle/main-components/bobber-controller.md)implements IBobberSpawner
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