IgnoreLayerCollision but then allow collision for some objects with that layer

[codebiscuits]

I’m not sure why you’re experiencing a problem, but an alternative approach could be to use contact modification to selectively ingore/ not ignore collisions, like these balls that ignore the collision going in, but pay attention on the way out:

Experimental contacts modification API

Here's a quick test I did: [image] (git repo here: https://github.com/0lento/ContactModSampleUnity) Basically there are few things happening here: 1) There are no forces/velocities added directly to these two balls in the scene. Instead the cubes at the bottom are acting as boost pads through contact modification (they just make the ball contact points think that the pads actually are moving at certain velocity). 2) Second ball has additional contact modification hack to check if the con…