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Question by claudiorota · Aug 05, 2018 at 09:23 PM · physicsrigidbodybugcollision detection

PROBLEM: collision between two rigidbodies

Hi, i have a problem when two ridigbodies collide each other. When this happens, these two rigidbodies start to go backwards, as if there is a force that pushes them. I found a lot of posts about this problem, but with those solutions i could not fix my problem. I have two rigidbodies with sphere collider. Thank you.

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Answer by gashraf · Aug 05, 2018 at 09:47 PM

Hi @claudiorota, You could try using a custom Physic Material (on Asset pane, right click --> Create --> Physic Material) to set the bounciness and friction properties and then use this material for your individual colliders on the game objects. Hope it helps you :)

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Answer by claudiorota · Aug 05, 2018 at 10:50 PM

Thank you, @gashraf, i tried what you suggest me but my problem still there is. I tried also to disabled my script that controls player's movement when he hits other player , but he still moves under that mysterious force.

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avatar image gashraf · Aug 06, 2018 at 04:51 AM 0
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Try adding friction to the ground as well using the same method. When two moving bodies collide, they will naturally repel from each other due to conservation of momentum... m1.v1 = m2.v2. To dissipate the transferred energy, you can increase ground friction which would stop them soon. Also ensure that the collider material bounciness is 0 and damping is high.

If you want one of the bodies to remain still, and the other to bounce off it, e.g. a cannon ball hitting a tower, make sure you set the tower rigidbody to is$$anonymous$$inematic. That way it will serve as a passive object for others to collide against it.

Lastly you can try playing with the masses of the objects... lighter vs. heavier.

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Answer by claudiorota · Aug 06, 2018 at 07:16 PM

@gashraf No, it doesn't work :( I think i have to handle something by script but i don't know what.

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