Event fired when a collider/rigidbody has begun touching another rigidbody/collider.
|source||The GameObject that was collided||GameObject|
|other||The GameObject that collided with ‘source’||GameObject|
|contactPoint||The 3d world coordinates of the collision contact point||Vector3|
|relativeVelocity||The relative linear velocity of the two colliding objects||Vector3|
Events of this type are managed by the On Collision Enter program.