我有两个SKNode
对象。当它们碰撞时,它们的位置会发生变化。
我怎样才能防止这种情况发生?同时,我仍然希望能够通过- (void)didBeginContact
回复他们的联系;
我尝试将他们的mass
属性都设置为0.0f
但这不起作用。
您可以通过设置类别、碰撞和接触位掩码来实现这一点。
uint32_t bodyABitMask = 1<<0;
uint32_t bodyBBitMask = 1<<1;
//A mask that defines which categories this physics body belongs to.
[bodyA setCategoryBitMask:bodyABitMask];
[bodyB setCategoryBitMask:bodyBBitMask];
//A mask that defines which categories of physics bodies
//can collide with this physics body.
[bodyA setCollisionBitMask:0];
[bodyB setCollisionBitMask:0];
//A mask that defines which categories of bodies cause
//intersection notifications with this physics body.
[bodyA setContactTestBitMask:bodyBBitMask];
[bodyB setContactTestBitMask:bodyABitMask];
在上述情况下,主体A和正文B不能碰撞,但是一旦它们接触,您将收到didBeginContact。