How to collide with just on part of the actor ?

nakatinenakatine Member Posts: 16
edited November -1 in Working with GS (Mac)
I've got an arrow which rotate in the center of the scene.
I've put little actor around the arrow and I want the arrow to collide with them.
My problem is that I just want the top of the arrow to collide with the actor.
Could you help me ?
Thanks.
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