Collider 2D

Colliders define an approximate shape for an object that’s used by the physics engine to determine collisions with other objects.

2D colliders all have names ending ‘2D’. A collider named without a ‘2D’ ending is a 3D joint. Note that you can’t mix 3D game objects and 2D colliders or 2D game objects and 3D colliders.

The collider types that can be used with Rigidbody 2D are:

• Circle Collider 2D
• Box Collider 2D
• Edge Collider 2D
• Polygon Collider 2D

See the pages about these components for further details.

USE AUTO MASS:

Note that a Collider’s mass determines the Rigidbody’s mass if you have Use Auto Mass selected. This option is good to use in conjunction with the Buoyancy Effector 2D.