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Question by jctwood · Feb 13, 2018 at 11:22 AM · rigidbodycollision detectionparticle system

OnParticleCollision not being called on Rigidbody

I have an object that scales when a particle collides with it using the OnParticleCollision method within a script on the object.

Everything works perfectly until I add a Rigidbody to the object or its parent at which point I can still see the particles colliding with the object but the OnParticleCollision method is no longer called.

On the particle system I have "EnableDynamicColliders" and "SendCollisionMessages" both enabled. The object's collider is not a trigger and the Rigidbody is not kinematic and has Continuous Dynamic collision.

Any help would be much appreciated.

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Answer by jctwood · Feb 13, 2018 at 11:27 AM

The parent object had a Rigidbody but the object itself did not. Once I added a Rigidbody to the object itself and connected them with a FixedJoint the OnParticleCollision method began being fired again. This means an object without a Rigidbody but whose parent has a Rigidbody will not receive OnParticleCollision messages.

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