1
私は、画面の中央近くの一点から四角に移動するファイルを持っています。1つのノードをある位置から別の位置に移動するにはどうすればよいですか？
その後、別の位置に移動したいと思いますが、その方法はわかりません。
これは、これまでの私のコードです。実行すると、1つのポイントに移動して停止します。
私がしたいことは、その1点に移動してすぐに同じx値でy値が画面の上部に触れる点に移動することです。
override func didMoveToView(view: SKView) {
self.physicsWorld.contactDelegate = self
createEnemies()
}
deinit{
print("deinit called")
}
func randomBetweenNumbers(firstNum: CGFloat, secondNum: CGFloat) -> CGFloat{
return CGFloat(arc4random())/CGFloat(UINT32_MAX) * abs(firstNum - secondNum) + min(firstNum, secondNum)
}
//Helper method for spawning a point along the screen borders. This will not work for diagonal lines.
func randomPointBetween(start:CGPoint, end:CGPoint)->CGPoint{
return CGPoint(x: randomBetweenNumbers(start.x, secondNum: end.x), y: randomBetweenNumbers(start.y, secondNum: end.y))
}
func createEnemies(){
//Randomize spawning time.
//This will create a node every 0.5 +/- 0.1 seconds, means between 0.4 and 0.6 sec
let wait = SKAction .waitForDuration(0.5, withRange: 0.2)
weak var weakSelf = self //Use weakSelf to break a possible strong reference cycle
let spawn = SKAction.runBlock({
var random = arc4random() % 4 + 1
var position = CGPoint()
var moveTo = CGPoint()
var offset:CGFloat = 40
switch random {
//Left
case 1:
position = weakSelf!.randomPointBetween(CGPoint(x: 0, y: weakSelf!.frame.height/2), end: CGPoint(x: 0, y: weakSelf!.frame.height/2))
//Move to opposite side
moveTo = CGPoint(x: weakSelf!.frame.width/4, y: weakSelf!.frame.height/2)
//moveTo2 = CGPoint(x: weakSelf!.frame.width/4, y: weakSelf!.frame.height)
break
default:
break
}
weakSelf!.spawnEnemyAtPosition(position, moveTo: moveTo)
})
let spawning = SKAction.sequence([wait,spawn])
self.runAction(SKAction.repeatActionForever(spawning), withKey:"spawning")
}
func spawnEnemyAtPosition(position:CGPoint, moveTo:CGPoint){
let enemy = SKSpriteNode(color: SKColor.redColor(), size: CGSize(width: 40, height: 40))
enemy.position = position
enemy.physicsBody = SKPhysicsBody(rectangleOfSize: enemy.size)
enemy.physicsBody?.affectedByGravity = false
enemy.physicsBody?.dynamic = true
enemy.physicsBody?.collisionBitMask = 0 // no collisions
//Here you can randomize the value of duration parameter to change the speed of a node
let move = SKAction.moveTo(moveTo,duration: 2.5)
//let remove = SKAction.removeFromParent()
enemy.runAction(SKAction.sequence([move]))
/*if enemy.position = CGPoint(x: weakSelf!.frame.width/4, y: weakSelf!.frame.height/2) {
let move2 = SKAction.moveTo(moveTo2,duration: 2.5)
enemy.runAction(SKAction.sequence([move2]))
}*/
self.addChild(enemy)
print("\(enemy.position)")
}
func didBeginContact(contact: SKPhysicsContact) {
}
/*
Added for debugging purposes
override func touchesBegan(touches: NSSet, withEvent event: UIEvent?) {
//Just make a transition to the other scene, in order to check if deinit is called
//You have to make a new scene ... I named it WelcomeScene
var scene:WelcomeScene = WelcomeScene(fileNamed: "WelcomeScene.sks")
scene.scaleMode = .AspectFill
self.view?.presentScene(scene)
}
*/
http://stackoverflow.com/questions/36684255/how-to-move-node-in-the-direction-of-another-node?rq=1 –