Legacy Documentation: Version 5.3
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Physics2D.IsTouching

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public static function IsTouching(collider1: Collider2D, collider2: Collider2D): bool;
public static bool IsTouching(Collider2D collider1, Collider2D collider2);

Parameters

collider1 The collider to check if it is touching collider2.
collider2 The collider to check if it is touching collider1.

Returns

bool Whether collider1 is touching collider2 or not.

Description

Check whether collider1 is touching collider2 or not.

It is important to understand that checking if colliders are touching or not is performed against the last physics system update i.e. the state of touching colliders at that time. If you have just added a new Collider2D or have moved a Collider2D but a physics update has not yet taken place then the colliders will not be shown as touching. The touching state is identical to that indicated by the physics collision or trigger callbacks.