> For the complete documentation index, see [llms.txt](https://docs.siminsights.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.siminsights.com/hyperskill-studio-authoring/state-machine-reference/triggers/collide.md).

# Collide

The Collide Trigger occurs when two specified entities come into contact with each other.

* **Target A Type:** the type of the first target: Virtual Object or Virtual Object Group.
* **Target A:** the first entity that will be collided.
* **Target B Type:** the type of the second target.
* **Target B:** the second entity that will be collided.

Target A and Target B must be different. A Virtual Object that is snapped to another Virtual Object will not consume the collision.