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Question by nickavv · Dec 22, 2013 at 02:38 AM · physicstriggerphysics2d

Trigger behavior between physics(2d) objects

I've got collectable objects and a player object in my game. Both need physics2d to interact with their environment, however I need there to be trigger-like behavior between the two types of objects. In other words I need the physics from the collectables to not push the player around if one happens to fly into him at an angle. I still need the collectables to bounce off each other though. How do I achieve this?

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avatar image KellyThomas · Dec 22, 2013 at 02:55 AM 0
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Have you tried marking the coin's colliders as triggers?

avatar image nickavv · Dec 22, 2013 at 03:15 AM 0
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But I still need the collectable to have physics interaction with the level. just not with the player. I tried using collision layers but that seems to disable triggers as well Basically I need both types of objects to have physics behavior, just not with each other

avatar image nickavv · Dec 22, 2013 at 03:11 PM 0
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You should post that as an answer, because it works and I will accept it. thank you!

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Answer by KellyThomas · Dec 22, 2013 at 08:52 AM

I don't know if this is the best solution but one way to do it would be to add a child gameobject to the coin. Give the child gameobject a collider and assign it to a separate physics layer.

You could then set this other collider as a trigger and use collision layers to only check collisions against the player.

You could then use the collisions layers to set the first collider to ignore the player.

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