Question

嗨，所以我希望用户只能从顶排的钉子上方点击，将球从钉子上掉下来。现在，您可以轻松触摸屏幕上的任何位置，包括目标，球将会到达那里。我已经尝试过使用if语句和CGPoint来制作它，这样你就可以从钉子上方删除它，但我太初学了解它。感谢。

这是我的代码，使用Swift 2和Xcode 7：我认为它会进入这里......

    for touch in touches {

        if self.nunus.count >= numberOfNunus {
            self.removeChildrenInArray(self.nunus)
            self.nunus = []
            self.score = 0
            updateLabels()
        } else {

            let nunu = SKSpriteNode(imageNamed:"nunu")

            nunu.xScale = 0.13
            nunu.yScale = 0.13
            nunu.position = touch.locationInNode(self)

            nunu.physicsBody = SKPhysicsBody(circleOfRadius: nunu.size.height / 2)
            nunu.physicsBody?.categoryBitMask = self.nunuCategory
            nunu.physicsBody?.collisionBitMask = self.pegCategory | self.borderCategory | self.postCategory | self.nunuCategory
            nunu.physicsBody?.contactTestBitMask = smallGoalCategory | self.mediumGoalCategory | self.bigGoalCategory



            self.addChild(nunu)

            self.nunus.append(nunu)
            updateLabels()
        }
    }
}

Answer 1

如果只触摸高于场景的midle，此代码会创建和删除节点。如果你想改变高度改变这一行：

if location.y > worl.frame.size.height / 2

例如：

if location.y > worl.frame.size.height * 0.8

表示您的触摸位置必须高于场景高度的80％

touchesBegan：

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

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

        if location.y > worl.frame.size.height / 2 {

            createNode()
        }
    }
}

func createAndDropNode() {

    //code here
}

world - 与SKScene完全相同的SKNode

Answer 2

想出来。 iPhone屏幕上的点数为500或以上。因此，如果用户触及500点以下，则丢球的代码将无法运行。我添加了这行代码： if touch.locationInNode（self）.y＆gt; 500

func touchesBegan（touches：Set，withEvent event：UIEvent？）{ / *触摸开始时调用* /

for touch in touches { if touch.locationInNode(self).y > 500 { if self.nunus.count >= numberOfNunus { self.removeChildrenInArray(self.nunus) self.nunus = [] self.score = 0 updateLabels() } else { let nunu = SKSpriteNode(imageNamed:"nunu") nunu.xScale = 0.13 nunu.yScale = 0.13 nunu.position = touch.locationInNode(self) nunu.physicsBody = SKPhysicsBody(circleOfRadius: nunu.size.height / 2) nunu.physicsBody?.categoryBitMask = self.nunuCategory nunu.physicsBody?.collisionBitMask = self.pegCategory | self.borderCategory | self.postCategory | self.nunuCategory nunu.physicsBody?.contactTestBitMask = smallGoalCategory | self.mediumGoalCategory | self.bigGoalCategory self.addChild(nunu) self.nunus.append(nunu) updateLabels() } } } }

需要帮助才能使球只能从游戏的顶部掉落

2 个答案: