Swift 快速多点触控对象
这是我在斯威夫特的第一场比赛。我想用SpriteKit做一个更高级的突破游戏,就像这样 我想创建4个桨并用4个手指分别移动它们,我尝试过这样做,但当我移动一个桨时,第二个也会移动。。。我能做什么Swift 快速多点触控对象,swift,ios8,multi-touch,Swift,Ios8,Multi Touch,这是我在斯威夫特的第一场比赛。我想用SpriteKit做一个更高级的突破游戏,就像这样 我想创建4个桨并用4个手指分别移动它们,我尝试过这样做,但当我移动一个桨时,第二个也会移动。。。我能做什么 import SpriteKit import AVFoundation class GameScene: SKScene { var fingerIsOnPaddle1 = false var fingerIsOnPaddle2 = false var fingerISOn
import SpriteKit
import AVFoundation
class GameScene: SKScene {
var fingerIsOnPaddle1 = false
var fingerIsOnPaddle2 = false
var fingerISOnPaddle3 = false
var fingerIsOnPaddle4 = false
let shurikenCategoryName = "shuriken"
let paddleCategoryName = "paddle"
let paddle2CategoryName = "paddle2"
let paddle3CategoryName = "paddle3"
let paddle4CategoryName = "paddle4"
let brickCategoryName = "brick"
let backgroundMusicPlayer = AVAudioPlayer()
override init(size: CGSize){
super.init(size: size)
let bgMusicURL = NSBundle.mainBundle().URLForResource("bgMusicMP3", withExtension: "mp3")
backgroundMusicPlayer = AVAudioPlayer(contentsOfURL: bgMusicURL, error: nil)
backgroundMusicPlayer.numberOfLoops = -1
backgroundMusicPlayer.prepareToPlay()
backgroundMusicPlayer.play()
let backgroundImage = SKSpriteNode(imageNamed: "bg")
backgroundImage.position = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 3)
self.addChild(backgroundImage)
self.physicsWorld.gravity = CGVectorMake(0, 0)
let worldBorder = SKPhysicsBody(edgeLoopFromRect: self.frame)
self.physicsBody = worldBorder
self.physicsBody?.friction = 0
let shuriken = SKSpriteNode(imageNamed: "shuriken")
shuriken.name = shurikenCategoryName
shuriken.position = CGPointMake(self.frame.size.width/2, self.frame.size.height / 2)
self.addChild(shuriken)
shuriken.physicsBody = SKPhysicsBody(circleOfRadius: shuriken.frame.width / 2)
shuriken.physicsBody?.friction = 0
shuriken.physicsBody?.restitution = 1
shuriken.physicsBody?.linearDamping = 0
shuriken.physicsBody?.applyImpulse(CGVectorMake(2, 2))
shuriken.physicsBody?.allowsRotation = true
let paddle = SKSpriteNode(imageNamed: "paddle")
paddle.name = paddleCategoryName
paddle.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame)/4)
self.addChild(paddle)
paddle.physicsBody = SKPhysicsBody(rectangleOfSize: paddle.frame.size)
paddle.physicsBody?.friction = 0.4
paddle.physicsBody?.restitution = 0.1
paddle.physicsBody?.dynamic = false
//paddle.position = CGPointMake(CGRectGetMidX(self.frame)/2, CGRectGetMidY(self.frame)/4)
//self.addChild(paddle)
let paddle2 = SKSpriteNode(imageNamed: "paddle")
paddle2.name = paddle2CategoryName
paddle2.position = CGPointMake(CGRectGetMidX(self.frame)/5, CGRectGetMidY(self.frame))
paddle2.zRotation = CGFloat(M_PI_2)
self.addChild(paddle2)
paddle2.physicsBody = SKPhysicsBody(rectangleOfSize: paddle.frame.size)
paddle2.physicsBody?.friction = 0.4
paddle2.physicsBody?.restitution = 0.1
paddle2.physicsBody?.dynamic = false
let paddle3 = SKSpriteNode(imageNamed: "paddle")
paddle3.name = paddle2CategoryName
paddle3.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame)/4*7)
self.addChild(paddle3)
let paddle4 = SKSpriteNode(imageNamed: "paddle")
paddle4.name = paddle2CategoryName
paddle4.position = CGPointMake(CGRectGetMidX(self.frame)/5*9, CGRectGetMidY(self.frame))
paddle4.zRotation = CGFloat(M_PI_2)
self.addChild(paddle4)
}
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
let touch = touches.anyObject() as UITouch
let touchLocation = touch.locationInNode(self)
let body:SKPhysicsBody? = self.physicsWorld.bodyAtPoint(touchLocation)
if body?.node?.name == paddleCategoryName {
println("Paddle 1 touched")
fingerIsOnPaddle1 = true
}
if body?.node?.name == paddle2CategoryName{
println("Paddle 2 touched")
fingerIsOnPaddle2 = true
}
}
override func touchesMoved(touches: NSSet, withEvent event: UIEvent) {
if fingerIsOnPaddle1{
let touch = touches.anyObject() as UITouch
let touchLoc = touch.locationInNode(self)
let prevTouchLoc = touch.previousLocationInNode(self)
let paddle = self.childNodeWithName(paddleCategoryName) as SKSpriteNode
var newXPos = paddle.position.x + (touchLoc.x - prevTouchLoc.x)
paddle.position = CGPointMake(newXPos, paddle.position.y)
}
if fingerIsOnPaddle2{
let touch2 = touches.anyObject() as UITouch
let touchLoc2 = touch2.locationInNode(self)
let prevTouchLoc2 = touch2.previousLocationInNode(self)
let paddle2 = self.childNodeWithName(paddle2CategoryName) as SKSpriteNode
var newYPos = paddle2.position.y + (touchLoc2.y - prevTouchLoc2.y)
paddle2.position = CGPointMake(paddle2.position.y, newYPos)
}
}
override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
}
required init?(coder aDecoder: NSCoder){
super.init(coder: aDecoder)
}
}
这里问题的关键在于touchesbeated函数,它需要一组触摸。这是一种非常常见的模式,只使用第一个模式,使用任意对象,但不必这样做,您可以在其上循环,如下所示:
override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
for touch in touches as? UITouch {
let touchLocation = touch.locationInNode(self)
let body:SKPhysicsBody? = self.physicsWorld.bodyAtPoint(touchLocation)
if body?.node?.name == paddleCategoryName {
println("Paddle 1 touched")
fingerIsOnPaddle1 = true
}
if body?.node?.name == paddle2CategoryName{
println("Paddle 2 touched")
fingerIsOnPaddle2 = true
}
}
}
我要做的是制作一个定制的桨类,然后调用该类中继承自SKSpriteNode的touchesBegind/任何方法,而不是在场景中调用它。你能给我举个小例子吗,我对Swift非常熟悉,我不理解你所说的继承自SKSpriteNode的意思。非常感谢你!您以前使用过面向对象编程语言吗?我建议在尝试制作游戏之前先学习一些更快速的/计算机科学。继承是非常基本的。敬畏的人,我很难过地看到堆栈溢出严重地未能回答这个问题。我怀疑Bobytza是否还会在意,但我还是要发布一个答案。感谢laaate的回答:也许有时候我会再次尝试我的想法。