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Question by theechefanthony · Apr 24 at 05:21 PM · rigidbody3dcollision detection

How can I detect collision between two objects when one can't have a rigidbody applied?

Currently in my game, I have a weapon that creates an instance of a prefab projectile with a collider and a rigidbody. I apply a force to this projectile to move it forward from whatever direction the "gun" is facing.


However, I need a way to delete these projectiles once they hit the terrain.


I'm working in a test scene with a single, stretched out cube as the floor. I'm having trouble using this terrain with the built-in collision system, as both objects (the projectile and the terrain) need rigidbodies. The projectile already has a rigidbody, but I can't give the terrain a rigidbody. Since both have rigidbodies, collision between the terrain and projectile results in the whole terrain moving. This basically destroys the whole level.


So, currently, I'm stuck trying to find workarounds. I just need to be able to destroy the projectile on contact with the terrain. Thank you!

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Answer by keroltarr · Apr 24 at 07:09 PM

one 1 of the 2 objects need to have a rigidbody component remove the rigidbody from the terrain and that should fix your issue.

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