didBeginContact不叫swift3 Xcode8

Question

我的方法didBeginContact有问题。我有一个球和一面墙。 两个对象的碰撞都很好。如果两个对象发生碰撞，它们会改变它们的位置，但不会调用方法didBeginContact。

// constants.swift
...

let ballCategory: UInt32 = 0x1 << 0 
let wallCategory: UInt32 = 0x1 << 1

...

// Physics balls (ball.swift)
...

init() {
  let size = CGSize(width: 32, height: 44)
  loadPhysicsBodyWithSize(size: size)
}

func loadPhysicsBodyWithSize(size: CGSize){
 physicsBody = SKPhysicsBody(rectangleOf: size)
 physicsBody?.categoryBitMask = ballCategory
 physicsBody?.contactTestBitMask = wallCategory
 physicsBody?.affectedByGravity = false
}

...

// Physics wall (wall.swift)
...

init() {
  let size = CGSize(width: 32, height: 44)
  loadPhysicsBodyWithSize(size: size)
}

func loadPhysicsBodyWithSize(size: CGSize){
 physicsBody = SKPhysicsBody(rectangleOf: size)
 physicsBody?.categoryBitMask = wallCategory
 physicsBody?.affectedByGravity = false
}

...

// GameScene (gameScene.swift)
class GameScene: SKScene, SKPhysicsContactDelegate { 
...
 override func didMove(to view: SKView) {
   physicsWorld.contactDelegate = self
 }
 func didBeginContact(contact: SKPhysicsContact){
  print("didBeginContact called")
 }
}

有人有什么想法吗？谢谢你的帮助！

Answer 1

我通过改变

解决了这个问题

func didBeginContact（联系方式：SKPhysicsContact）

到

func didBegin（_ contact：SKPhysicsContact）