Question

我的游戏应用程序有随机移动的对象。当我触摸/抓住它时，我想停止并在屏幕上打印一些单词。但我不知道在gamescene.swift页面中我能做什么。我应该在touchesBegan中写些什么？这是我的代码：

import SpriteKit

let BallCategoryName = "ball"

class GameScene: SKScene {
   override func didMoveToView(view: SKView) {
       super.didMoveToView(view)

       let borderBody = SKPhysicsBody(edgeLoopFromRect: self.frame)


       borderBody.friction = 0


       self.physicsBody = borderBody


       physicsWorld.gravity = CGVectorMake(15, 15)

       let ball = childNodeWithName(BallCategoryName) as! SKSpriteNode
       ball.physicsBody!.applyImpulse(CGVectorMake(10, -10))

 }
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {

       let touch = touches.first as! UITouch


        }

}

Answer 1

首先，您需要将变量球放在didMoveToView：

之外

class GameScene: SKScene {

    let ball = childNodeWithName(BallCategoryName) as! SKSpriteNode

    override func didMoveToView(view: SKView) {
        [...]
    }
}

的touchesBegan：

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
    for touch:AnyObject in touches{
        let location = (touch as! UITouch).locationInNode(self)
        let nodeTouched = nodeAtPoint(location)

        //Detect if the ball is touched
        if(nodeTouched == ball){
            //Do something
        }
    }
}

当我触摸物体时，如何停止移动物体？

1 个答案: