swift - didBegin 联系人未在 Swift 中被调用

Question

我有两个节点，我想检测它们之间的碰撞，但出于某种原因

func didBegin(_ contact: SKPhysicsContact) {

没有被调用。

它是一个球和一个桨:

ball.physicsBody?.categoryBitMask = 2
ball.physicsBody?.contactTestBitMask = 2        
ball.physicsBody?.isDynamic = true

main.physicsBody?.categoryBitMask = 1
main.physicsBody?.contactTestBitMask = 1
main.physicsBody?.isDynamic = false

_

func didBegin(_ contact: SKPhysicsContact) {
        print("Collision") //Obviously this will be better in future, but I need to detect collision for a start
}

当球四处移动时，它确实会从 Racket 上反弹，但我需要能够检测到这一点。

谢谢

Answer 1

检查这些东西:

确保将物理世界联系委托(delegate)设置为自身 GameScene 类:SKScene、SKPhysicsContactDelegate{

override func didMove(to view: SKView) {
    physicsWorld.contactDelegate = self
    self.backgroundColor = .white
    }

如果您指定了一个物理体，例如:

box.physicsBody = SKPhysicsBody(rectangleOf: CGSize)

确保它绝对是展开的(!不是？)

box.physicsBody!.affectedByGravity = true

使物理体动态化:

    box.physicsBody!.isDynamic = true