Question

我正在创建一个游戏，它会产生随机敌人并将它们移动到屏幕上以供用户使用spritekit进行拍摄。我遇到的问题是检测敌人何时被触碰。我尝试了很多不同的方法，但没有任何效果。我认为我遇到的问题是每个产生的敌人都使用相同的变量。所有我真正想知道的是当触摸其中一个“敌人”精灵时我如何执行某个代码块。这是我添加敌人的功能，然后我在计时器上调用此功能来添加敌人。任何帮助将非常感激，因为我迷失和沮丧。提前致谢

func addEnemy() {

    let distance = CGFloat(self.frame.size.height-150)

    possibleEnemy = GKRandomSource.sharedRandom().arrayByShufflingObjects(in: possibleEnemies) as! [String]

    let enemy = SKSpriteNode(imageNamed: possibleEnemies[0])
    let randomEnemyPosition = GKRandomDistribution(lowestValue: 200, highestValue: Int(distance))


    let position = CGFloat(randomEnemyPosition.nextInt())

    enemy.isUserInteractionEnabled = true
    enemy.name = "\(possibleEnemies[0])"
    enemy.position = CGPoint(x:-50, y: position)
    enemy.physicsBody = SKPhysicsBody(rectangleOf: enemy.size)
    enemy.physicsBody?.isDynamic = true
    enemy.physicsBody?.categoryBitMask = enemyCategory
    enemy.physicsBody?.collisionBitMask = 0
    self.addChild(enemy)
    let animationDuration:TimeInterval = 6
    let oscillate = SKAction.oscillation(amplitude: 30, timePeriod: 4, midPoint: enemy.position)
    enemy.run(SKAction.repeatForever(oscillate))
    enemy.run(SKAction.moveBy(x: size.width, y: 0, duration: 5))
    var actionArray = [SKAction]()
    actionArray.append(SKAction.moveTo(x: self.frame.width, duration: animationDuration))
    actionArray.append(SKAction.removeFromParent())
    enemy.run(SKAction.sequence(actionArray))


}

编辑：用于检测敌人是否被触摸的代码

override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    for touch: AnyObject in touches {



        let location = touch.location(in: self)

        if enemy.contains(location) {

            //Run code


        }
    }

}

编辑：尝试检测节点是否被触摸的其他方法

let touch:UITouch = touches.anyObject()! as UITouch
let positionInScene = touch.locationInNode(self)
let touchedNode = self.nodeAtPoint(positionInScene)

if let name = touchedNode.name
{
    if name == "enemy"
    {
        //Run code
    }
}

}

随机节点生成SpriteKit

0 个答案: