Different shapes in a single body with different collision mask

[NumberOneRobot]

I am trying to make a combat game. I want players to collide with the ground like normal, but to interact differently when they collide with other players. To do this, I've created a body with two shapes, one that is not a sensor, and collides with the ground, and one that is a sensor, and collides with other players.

 

When I try to have both of the shapes active on the body, however, I fall through the ground. When only the ground colliding shape is active, the ground collision happens, but the other collision (obviously) does not happen.

 

Is this a limitation in the p2 physics engine that doesn't allow a body to have shapes with different collision masks, or or do you think there is something I am doing wrong to mess this up?

 

Below is the code I'm using to add the shapes to the body. I set the collision mask when I load the shapes earlier in the code.

for (var i = 0; i < groundCollisionShapes.length; i++) {	this.body.addShape(groundCollisionShapes[i], groundCollisionShapes[i].offset);}for (var i = 0; i < playerCollisionShapes.length; i++) {	this.body.addShape(playerCollisionShapes[i], playerCollisionShapes[i].offset);}

[ZoomBox]

I'm totally sure it's possible.

 

I believe you could try to change the colisions mask after creating all the shapes.

I know I had to do a little trick like that. If you don't find I'll check this in a few hours.