# Step Trigger

This script uses the **OnTriggerEnter** callback to detect if the feet of the animal is colliding with the **Ground Layer,** from the  [**Steps Manager**](/animal-controller/utilities/steps-manager.md). It will send upwards to the [**Steps Manager**](/animal-controller/utilities/steps-manager.md) where the contact was made so it can place the **tracks, dust particles** and play a **step sound**.

![](/files/-Lzwh4pFdqOTpEKSQQod)

{% hint style="danger" %}
This Component requires any type of **Collider.** Usually has a Sphere collider attached to it.
{% endhint %}

![](/files/-Lzwh7NSSYyQxnJSYJDR)


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