ios - *碰撞*通过位掩码

Question

我试图不接触穴居人和其他带有碰撞位掩码的图像，但我的穴居人击中了一切。

func addCaveManBitMasks(){

    caveManNode.physicsBody?.categoryBitMask = PhysicsCategory.caveman
    caveManNode.physicsBody?.contactTestBitMask = PhysicsCategory.tri | PhysicsCategory.trex | PhysicsCategory.newblock |  PhysicsCategory.fireBall | PhysicsCategory.waterblock | PhysicsCategory.secondwaterblock | PhysicsCategory.star
    caveManNode.physicsBody?.collisionBitMask = PhysicsCategory.newblock
}
func addTriBitMasks(){

    triImage.physicsBody?.categoryBitMask = PhysicsCategory.tri
    triImage.physicsBody?.contactTestBitMask =  PhysicsCategory.caveman
    triImage.physicsBody?.collisionBitMask = 0
}
func addRexBitMasks(){
    tRexImage.physicsBody?.categoryBitMask = PhysicsCategory.trex
    tRexImage.physicsBody?.contactTestBitMask =  PhysicsCategory.caveman
    tRexImage.physicsBody?.collisionBitMask = 0
}
func addNewBlockManBitMasks(){
    newBlockImageNode.physicsBody?.categoryBitMask = PhysicsCategory.newblock
    newBlockImageNode.physicsBody?.contactTestBitMask = PhysicsCategory.caveman | PhysicsCategory.steg
    newBlockImageNode.physicsBody?.collisionBitMask = PhysicsCategory.caveman
}
func addFireBallBitMasks(){
    fireBall.physicsBody?.categoryBitMask = PhysicsCategory.fireBall
    fireBall.physicsBody?.contactTestBitMask = PhysicsCategory.caveman
    fireBall.physicsBody?.collisionBitMask = 0
}
func addStarBitMasks(){
    onScreenStar.physicsBody?.categoryBitMask = PhysicsCategory.star
    onScreenStar.physicsBody?.contactTestBitMask = PhysicsCategory.caveman
    onScreenStar.physicsBody?.collisionBitMask = 0
}


struct PhysicsCategory {

    static let caveman: UInt32 = 0x1 << 0
    static let tri: UInt32 = 0x1 << 1
    static let trex: UInt32 = 0x1 << 2
    static let fireBall: UInt32 = 0x1 << 3
    static let steg: UInt32 = 0x1 << 4
    static let ptero: UInt32 = 0x1 << 5
    static let waterblock: UInt32 = 0x1 << 6
    static let secondwaterblock: UInt32 = 0x1 << 7
    static let newblock: UInt32 = 0x1 << 8
    static let star: UInt32 = 0x1 << 9
    static let food: UInt32 = 0x1 << 10


}

tri、rex、fireball 和 newblock 彼此不接触，这是完美的，但我也需要穴居人做同样的事情。穴居人应该只碰撞 与它所做的新方 block 。我很困惑，非常感谢您的解释

Answer 1

这是因为您将所有其他对象 collisionBitMask 设置为与穴居人相同。将那些其他对象的碰撞位掩码更改为您尚未在另一个节点上使用的位掩码，因为它的类别，你会很好。