hytopia/docs/server.collisioncallback.md

The HYTOPIA SDK makes it easy for developers to create massively multiplayer games using JavaScript or TypeScript.

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[Home](./index.md) &gt; [server](./server.md) &gt; [CollisionCallback](./server.collisioncallback.md)

## CollisionCallback type

A callback function that is called when a collision occurs.

**Signature:**

```typescript
export type CollisionCallback = ((other: BlockType | Entity, started: boolean) => void) | ((other: BlockType | Entity, started: boolean, colliderHandleA: number, colliderHandleB: number) => void);
```
**References:** [BlockType](./server.blocktype.md)<!-- -->, [Entity](./server.entity.md)