Question

我喜欢创造左侧和右侧，当我触摸它们时，一只鸟会飞向左侧或右侧！

我创造了一只鸟

var birdtexture = SKTexture(imageNamed: "flappy1.png")            
bird = SKSpriteNode(texture: birdtexture)
bird.position
bird.size
bird.physicsBody = SKPhysicsBody(circleOfRadius: bird.size.width/2)
bird.physicsBody?.dynamic = true
bird.physicsBody?.allowsRotation = false
self.addChild(bird)

然后我创建左节点

var groundleft = SKSpriteNode()
groundleft.position = CGPoint(x: 0, y: 50)
groundleft.size = CGSize(width: 500, height: 100)
groundleft.color = UIColor(red: 7, green: 5, blue: 7, alpha: 20)


groundleft.physicsBody = SKPhysicsBody(rectangleOfSize:CGSizeMake(self.size.width, 100))
groundleft.physicsBody?.dynamic = true
groundleft.physicsBody?.affectedByGravity = false
groundleft.name = "toleft"
self.addChild(groundleft)

然后我去TouchBegan

let touch = touches.first as! UITouch
let touchLocation = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(touchLocation)

if(touchedNode.name == "toleft"){

    bird.physicsBody?.velocity = CGVectorMake(0, 0)
    bird.physicsBody?.applyImpulse(CGVectorMake(-10, 100))

}

为什么它没有用。我的方法错了吗？有没有其他方法让我工作？请帮忙，非常感谢

Answer 1

在touchesBegan方法中试试这个：

override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {

    if let touch = touches.first as? UITouch {

        let touchLocation = touch.locationInNode(self)
        if nodeAtPoint(touchLocation) == groundleft {   //your sprite node
            //do something

        } 
    }
    super.touchesBegan(touches , withEvent:event)
}

真的需要关于UITouch的帮助（精灵套件）

1 个答案: