无法调用SpriteKit的didBeginContact

I tested with a simple scene.

我测试了一个简单的场景。

Func didBeginContact can't be called.

无法调用Func didBeginContact。

I have try to use collisionBitMask and s1.physicsBody = SKPhysicsBody(circleOfRadius: 100). The problem was persistent.

我尝试使用collisionBitMask和s1.physicsBody = SKPhysicsBody(circleOfRadius:100)。问题持续存在。

What can I do to fix it?

我该怎么做才能解决它?

import SpriteKit

class Test2Scene: SKScene, SKPhysicsContactDelegate {
    override func didMoveToView(view: SKView) {
        physicsWorld.contactDelegate = self
        physicsWorld.speed = 0


        let s1 = SKSpriteNode(imageNamed: kImagePlayer)
        s1.position = CGPointMake(100, 100)
        s1.physicsBody = SKPhysicsBody(rectangleOfSize: s1.size)
        s1.physicsBody?.categoryBitMask = 1
        s1.physicsBody?.contactTestBitMask = 2
        //s1.physicsBody?.collisionBitMask = 2
        self.addChild(s1)


        let s2 = SKSpriteNode(imageNamed: kImagePlayer)
        s2.position = CGPointMake(100, 500);
        s2.runAction(SKAction.moveToY(0, duration: 1))
        s2.physicsBody = SKPhysicsBody(rectangleOfSize: s2.size)
        s2.physicsBody?.categoryBitMask = 2
        //s2.physicsBody?.collisionBitMask = 1
        self.addChild(s2);

        print("view did load")
    }

    func didBeginContact(contact: SKPhysicsContact) {
        print("aaa")
    }
    func didEndContact(contact: SKPhysicsContact) {
        print("bbb")
    }
}

2 个解决方案

#1

Your code is pretty much all wrong, but your offender is :

你的代码几乎都错了,但你的罪犯是:

physicsWorld.speed = 0

From the docs:

来自文档:

The default value is 1.0, which means the simulation runs at normal speed. A value other than the default changes the rate at which time passes in the physics simulation. For example, a speed value of 2.0 indicates that time in the physics simulation passes twice as fast as the scene’s simulation time. A value of 0.0 pauses the physics simulation.

默认值为1.0,表示模拟以正常速度运行。默认值以外的值会更改物理模拟中经过的速率。例如,速度值为2.0表示物理模拟中的时间传递速度是场景模拟时间的两倍。值0.0会暂停物理模拟。

So setting it to 0.0 pauses the simulation. Second problem is that your nodes are affected by gravity but you move them using SKAction. That way you are pulling the node out of physics simulation and you may experience weird behaviours.

因此将其设置为0.0会暂停模拟。第二个问题是您的节点受重力影响,但您使用SKAction移动它们。这样你就可以将节点拉出物理模拟,你可能会遇到奇怪的行为。

Also I would recommend to read this great * post about bitmasks and how they work / should be used.

另外,我建议阅读这篇关于bitmasks以及它们如何工作/应该如何使用的*文章。

#2

Find out the reason. Need use

找出原因。需要使用

s1.physicsBody!.dynamic = true
s2.physicsBody!.dynamic = true

#1