Is it possible to enable gravity and collision separately for a mesh

Questions
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1

I’m trying to enable collision and gravity on meshes seperatly in my application. This is triggered on a toggle button event. I used physicsImpostor to enable gravity, when using this the collision is enabled by default. when I try to disable the collision by setting “checkCollisions” to false, it not working.
Is it possible to enable and disable collision without affecting the gravity functionality of the mesh.

2

checkCollisions uses the native collision system of BabylonJS, so in case of physics engine set it to false.

In the physics engine you can set collisionFilterGroup and collisionFilterMask. A collision between A and B will happen if A.collisionFilterGroup & b.collisionFilterMask !== 0.

So for every “digit” of A and B the AND-operator is applied. By default group and mask is -1.

The example PG of @Cedric:

But I recommend to use new Havok physics engine:

How collision filters are set in Havok:

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3

Thanks for the response. I tried the collisionFilterGroup and collisionFilterMask, it works. Just need to try the Havok physics engine.

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4

Is it possible to keep the collision enabled and disable just the gravity of a mesh.

5

Assuming we talk about Havok, then the PhysicsBody can setGravityFactor:

Otherwise this topic explains workarounds in other physic engines:

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