swift 2.0分配了哪个图像

我想知道如何检查分配给SKSpriteNode的图像

这是我的密码： 更新日期：2月11日

import SpriteKit

class GameScene: SKScene, SKPhysicsContactDelegate {

    override func didMoveToView(view: SKView) {
        /* Setup your scene here */

       self.physicsWorld.contactDelegate = self

    }//enddidMoveToView

    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
       /* Called when a touch begins */
        print("hello")
        var ball = SKSpriteNode()
        for touch in touches {

            let location = touch.locationInNode(self)
            //calls a ball with a randomImgColor
            ball = SKSpriteNode(imageNamed:"ball\(arc4random_uniform(3))")
            ball.xScale = 0.1
            ball.yScale = 0.1
            ball.physicsBody = SKPhysicsBody(circleOfRadius:  ball.size.height / 2.5)
            ball.position = location

            if ball == SKSpriteNode(imageNamed:"ball0") {
                print("the red ball was assigned")
            } else if ball == SKSpriteNode(imageNamed:"ball1") {
                print("the green ball was assigned")
            } else if ball == SKSpriteNode(imageNamed:"ball2") {
                print("the blue ball was assigned")
            }

            self.addChild(ball) 
        }//ends touch
    }//endtouchesBegan


    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */
    }


}//end GameScene

导入SpriteKit
类游戏场景：SKScene，SKPhysicContactDelegate{
覆盖func didMoveToView（视图：SKView）{
/*在这里设置场景*/
self.physicsWorld.contactDelegate=self
}//enddidMoveToView
覆盖功能触摸开始（触摸：设置，withEvent事件：UIEvent？）{
/*当触摸开始时调用*/
打印（“你好”）
var ball=SKSpriteNode（）
接触{
let location=touch.locationInNode（自）
//使用随机颜色调用球
ball=SKSpriteNode（图像名为：“ball\（arc4random_uniform（3）））
ball.xScale=0.1
ball.yScale=0.1
ball.physicsBody=SKPhysicsBody（圆形半径：ball.size.height/2.5）
ball.position=位置
如果ball==SKSpriteNode（图像名为：“ball0”）{
打印（“红色球已分配”）
}如果ball==SKSpriteNode（图像名为：“ball1”）{
打印（“绿色球已分配”）
}如果ball==SKSpriteNode（图像名为：“ball2”）{
打印（“蓝球已分配”）
}
self.addChild（ball）
}//结束接触
}//结束接触开始了
覆盖函数更新（currentTime:CFTimeInterval）{
/*在渲染每个帧之前调用*/
}
}//结束游戏场景

我为您提供了一个解决方案，但它可能不是您想要的。由于通过将随机字符串传递到

SKSpriteNode

中来创建图像，因此可以将该字符串存储在变量中，并将

SKSpriteNotes

.name

属性设置为相同的值，然后检查name的值。这样就省去了创建要检查的实例的麻烦：

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        for touch in touches {
            var ball = SKSpriteNode() // in your for loop!
            let location = touch.locationInNode(self)
            let random = "ball\(arc4random_uniform(3))" // <-- notice
            ball = SKSpriteNode(imageNamed:random)
            ball.xScale = 0.1
            ball.yScale = 0.1
            ball.physicsBody = SKPhysicsBody(circleOfRadius:  ball.size.height / 2.5)
            ball.name = random // <-- set name == to your ball type
            ball.position = location

            // safely unwrap ball name
            guard let ballName = ball.name else {
                return
            }
            print(ballName)
            // check ball name
            if ballName == "ball0" {
                print("the red ball was assigned")
            } else if ballName == "ball1" {
                print("the green ball was assigned")
            } else if ballName == "ball2" {
                print("the blue ball was assigned")
            }

            self.addChild(ball)
        }
    }//ends touch    

虽然我不能确定你的意图是什么，但我想你希望你的条件语句在for-in循环中正确吗

for touch in touches {
    let location = touch.locationInNode(self)

    //calls a ball with a randomImgColor
    ball = SKSpriteNode(imageNamed:"ball\(arc4random_uniform(3))")
    ball.position = location

    if ball == SKSpriteNode(imageNamed:"ball0") {
        print("the red ball was assigned")
    } else if ball == SKSpriteNode(imageNamed:"ball1") {
        print("the green ball was assigned")
    } else if ball == SKSpriteNode(imageNamed:"ball2") {
        print("the blue ball was assigned")
    }

    self.addChild(ball) 
}

---

当然可以。第一次使用这项服务，我印象深刻，很高兴在这个世界上有像你这样的人：）我一定是弄错了。我认为读你的代码有道理，但我没有得到任何指纹。这个@dan Beaulieu有什么原因吗？在“touchesEnded”函数的顶部添加一条打印语句以确保它启动。更新后，看看我的新解决方案是否能让您在任何地方都完美无瑕，这正是我想要的谢谢

for touch in touches {
    let location = touch.locationInNode(self)

    //calls a ball with a randomImgColor
    ball = SKSpriteNode(imageNamed:"ball\(arc4random_uniform(3))")
    ball.position = location

    if ball == SKSpriteNode(imageNamed:"ball0") {
        print("the red ball was assigned")
    } else if ball == SKSpriteNode(imageNamed:"ball1") {
        print("the green ball was assigned")
    } else if ball == SKSpriteNode(imageNamed:"ball2") {
        print("the blue ball was assigned")
    }

    self.addChild(ball) 
}