collisionBitMask值在SpriteKit中不起作用

我有兩個我想碰撞的實體。我有一個結構，以保持不同的物理類的軌跡：collisionBitMask值在SpriteKit中不起作用

struct PhysicsCategory { 
    static let Player: Int32 = 0x1 << 1 
    static let Obstacle: Int32 = 0x1 << 2 
    static let Ground: Int32 = 0x1 << 3 
}

我希望我的球員節點與我的障礙物碰撞的節點。這裏是我的球員節點的物理：

self.physicsBody = SKPhysicsBody(rectangleOf: (self.size)) 
    self.physicsBody?.isDynamic = true 
    self.physicsBody?.categoryBitMask = UInt32(PhysicsCategory.Player) 
    self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Obstacle) 
    self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Ground)

這裏是我的障礙節點的物理

self.physicsBody = SKPhysicsBody(rectangleOf: self.size) 
    self.physicsBody?.categoryBitMask = UInt32(PhysicsCategory.Obstacle) 
    self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Player) 
    self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Ground) 
    self.physicsBody?.isDynamic = true 
    self.physicsBody?.velocity = CGVector(dx: -240, dy: 0) 
    self.physicsBody?.linearDamping = 0 
    self.physicsBody?.friction = 0

當他們穿越的路徑，他們只是通過彼此。但是，它們都與地面碰撞。我究竟做錯了什麼？

來源

2017-08-04 5AMWE5T

該方案的基本mation告訴你如果你寫x = 1和x = 2之後，你的x是2 –

當您第二次設置時，您正在覆蓋collisionBitMask。您應該設置一個OR位掩碼，其符號爲|。

更換

self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Obstacle) 
self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Ground)

有：

self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Obstacle) | UInt32(PhysicsCategory.Ground)

和

self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Player) 
self.physicsBody?.collisionBitMask = UInt32(PhysicsCategory.Ground)

有：

來源

2017-08-04 15:17:56 the4kman

collisionBitMask值在SpriteKit中不起作用

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