Wildcard collision handler musings

wildcard_collisions.c

static cpBool
PlayerTerrainBegin(cpArbiter *arb, cpSpace *space, void *data)
{
	CP_ARBITER_GET_SHAPES(arb, playerShape, terrainShape);
	
	GameObject *player = cpShapeGetUserData(playerShape);
	GameObject *terrain = cpShapeGetUserData(terrainShape);
	
	cpBool retvalA = player.collidedWith(terrain);
	cpBool retvalB = terrain.collidedWith(player);
	
	// Uh... Make the player muddy?
	
	return cpTrue || retvalA && retvalB || whatever;
}

// This would be the default handler to be called when a specific handler doesn't exist
static cpBool
DefaultBegin(cpArbiter *arb, cpSpace *space, void *data)
{
	CP_ARBITER_GET_SHAPES(arb, shapeA, shapeB);
	
	GameObject *a = cpShapeGetUserData(shapeA);
	GameObject *b = cpShapeGetUserData(shapeB);
	
	return (a.collidedWith(b) && b.collidedWith(a);
}

// when the space is initialized:
cpSpaceAddCollisionHandler(space, PLAYER_TYPE, TERRAIN_TYPE, PlayerTerrainBegin, NULL, NULL, NULL, NULL);