CODEWITHSUNDEEP
unity-game-enginecollision-detectionrigid-bodies
kag359six
kag359six

Reputation: 2263

Collision Events in Unity3D

I noticed that OnCollisionEnter2D does not trigger when two objects with Collider2D components make contact. It only triggers when one of them has a RigidBody attached to it. This seems odd to me, because the Unity editor itself says that having a static collider in place of a non moving RigidBody is much better for performance. Then why does Unity not allow two game objects with static colliders trigger collision events when they make contact?

Upvotes: 1

Views: 136

Answers (1)

Gunnar B.
Gunnar B.

Reputation: 2989

Sure, static colliders are more performant, but as the word indicates: they are static.
Movement requires physics calculation and therefore a rigidbody (which holds information about speed etc.). This is actually stated in the docs for the normal collision here http://docs.unity3d.com/ScriptReference/Collider.OnCollisionEnter.html

Upvotes: 1

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