Box2d collisions (android AndEnigne)

I learn AndEngine and trying to make a simple game. I use physics engine box2d and need to make 2 objects in physicsworld that will be able to pass through him self and won't be able to penetrate rest of objects in this world. Is it possieble ?

Tha开发者_JAVA百科nks in advance

Greg.

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Yes, its possible using collision filters. I think there's an example in the andengine demos