macos - didBegin联系逻辑 OSX swift

Question

我在创建的 OSX 游戏上的 didBeginContact 内部逻辑遇到一些问题。它是用 swift 编写的，目前的代码如下:

   func didBeginContact(contact: SKPhysicsContact) {

    let collision: UInt32 = contact.bodyA.categoryBitMask |
        contact.bodyB.categoryBitMask

    if collision == PhysicsCategory.player | PhysicsCategory.wall {

    } else if collision ==
        PhysicsCategory.player | PhysicsCategory.box {
            player.setJump(true)

    } else if collision ==
        PhysicsCategory.player | PhysicsCategory.floor {
            player.setJump(true)
    }

    if collision ==
        PhysicsCategory.laser | PhysicsCategory.wall {

            effects = SKEmitterNode(fileNamed: "Explosion.sks")
            addChild(effects!)
            laser!.removeFromParent()
    }

   else  if collision ==
        PhysicsCategory.laser | PhysicsCategory.floor {
            effects = SKEmitterNode(fileNamed: "Explosion.sks")
            addChild(effects!)
             laser!.removeFromParent()
    }

我觉得这些困惑的 if 语句效率非常低，但我不知道如何将其转换为 switch 语句，或者是否会更有效。我尝试删除“else”并只添加一系列“if”语句，但是当发生碰撞时我会遇到更多错误(盒子穿过墙壁掉落等......)任何建议将不胜感激

Answer 1

如果有人偶然发现这个问题，我是这样解决的。

let collision: UInt32 = contact.bodyA.categoryBitMask | 

 contact.bodyB.categoryBitMask

    switch collision{

    case PhysicsCategory.player | PhysicsCategory.floor:
         playerObj.setJump(true)

    case  PhysicsCategory.player | PhysicsCategory.box:
        playerObj.setJump(true)

    case PhysicsCategory.player | PhysicsCategory.wall:
        return
     // ect...
     default:
        return
}