Question

我正在为iOS开发一款小游戏。

我的场景中有一个SKSpriteNode - 当我用＆＃34; removeFromParent＆＃34;删除它时并触摸它最后的区域，我仍然得到了这个功能。

我的代码如下：

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
    /* Called when a touch begins */

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

        if tapToPlayNode.containsPoint(location){
            tapToPlayNode.removeFromParent()
            startNewGame()
        }
    }
}

func startNewGame(){
    //Starts a new game with resetted values and characters in position
    println("Ready.. set.. GO!")

    //Shows the ui (value 1)
    toggleUiWithValue(1)
}

换句话说，我得到了＃34;准备好......设置...... GO！＆＃34;即使在删除区域后我也会触摸该区域。

任何线索？

贝斯茨，

Answer 1

您的tapToPlayNode仍由自己保留，并从其父级中删除。您应该将其设为可选var tapToPlayNode:SKSpriteNode?，并在将其从此父级中删除后将其设为nil：

if let playNode = self.tapToPlayNode {
   for touch: AnyObject in touches {
   let location = touch.locationInNode(self)

        if playNode.containsPoint(location) {
            playNode.removeFromParent()
            startNewGame()
            self.tapToPlayNode = nil // il it here!
            break
        }
    }
}

您还可以避免保留tapToPlayNode的引用，并在初始化时为其命名：

node.name = @"tapToPlayNodeName"
// Add node to scene and do not keep a var to hold it!

override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
/* Called when a touch begins */

    // Retrieve the ode here
    let tapToPlayNode = container.childNodeWithName("tapToPlayNodeName")!
    for touch: AnyObject in touches {
       let location = touch.locationInNode(self)

        if tapToPlayNode.containsPoint(location){
            tapToPlayNode.removeFromParent()
            startNewGame()
        }
    }
}

（Swift + Spritekit） - 完全删除节点及其数据

1 个答案: