Swift SpriteKit touchesBegan detect right/left

Question

In meiner Anwendung verwende ich den unten stehenden Code, um den Ball zu prellen, aber das Problem ist, dass der Ball nach links springt, wenn ich rechts drücke, und links, wenn ich nach links drücke. Wenn ich in der Mitte drücke, springt es wie gewohnt senkrecht nach oben. Dies ist der Code Ich verwende:

var PlayingFlag:Bool = false 
let jumpAmount:Double = 310.0 
var Ballx1:CGFloat = 0.0 
var Ballx2:CGFloat = 0.0 
var Ballx3:CGFloat = 0.0 
var Ballx4:CGFloat = 0.0 
var BallMoveAmount = (10.0, 100.0, 150.0, 200.0) 

func CreateBall(){ 

     let ballTexture = SKTexture(imageNamed: "ball") 
     ballTexture.filteringMode = .Nearest 
     self.ball = SKSpriteNode(texture: ballTexture) 
     self.ball!.physicsBody = SKPhysicsBody(texture: ballTexture, size: ball!.size) 
     self.ball!.physicsBody?.dynamic = true 
     self.ball!.physicsBody?.allowsRotation = true 
     self.ball!.physicsBody?.restitution = 0.6 
     self.ball!.physicsBody?.mass = 0.430 // m = 430g 
     self.ball!.position = CGPoint(x: self.frame.size.width/2 , y: self.frame.size.height) 
     self.ball!.physicsBody?.collisionBitMask = 0x1 << 1 
     self.ball!.zPosition = 10 
     self.addChild(self.ball!) 

     let Ballx0 = ball!.size.width 
     self.Ballx1 = Ballx0 * 0.2 
     self.Ballx2 = Ballx0 * 0.4 
     self.Ballx3 = Ballx0 * 0.6 
     self.Ballx4 = Ballx0 * 0.8 
    } 

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

     let ballHeight = self.ball!.size.height 
      for touch : UITouch in touches{ 

       let tpoint = touch.locationInNode(self) 
       if tpoint.y < (self.ball!.position.y + (ballHeight/2.0)) { 
        if tpoint.y > (self.ball!.position.y - (ballHeight/2.0)) 
        { 
         var xpower:Double = 0.0 
         let xpo = abs(tpoint.x - self.ball!.position.x) 
         if(xpo < self.Ballx1){ 
          xpower = BallMoveAmount.0 
         }else if (xpo < self.Ballx2) { 
          xpower = BallMoveAmount.1 
         }else if (xpo < self.Ballx3) { 
          xpower = BallMoveAmount.2 
         }else if (xpo < self.Ballx4) { 
          xpower = BallMoveAmount.3 
         }else{ 
          return 
         } 

         if xpo > 0 { 
          xpower = xpower * -1 
         } 
         self.ball!.physicsBody?.velocity = CGVector.zero 
         self.ball!.physicsBody?.applyImpulse(CGVector(dx: xpower, dy: self.jumpAmount)) 
         self.ball!.runAction(se_ball) 

         if !self.PlayingFlag { // initial touch 
          self.gonode?.removeFromParent() 
          self.PlayingFlag = true 
         }else{ 
          //something else 
         } 
        } 
       } 
      } 
     } 

func didBeginContact(contact: SKPhysicsContact) { 

     if !self.PlayingFlag { return } 
     if contact.bodyA.node == self.floorSprite || contact.bodyB.node == self.floorSprite { 

      self.PlayingFlag = false 

      // Game over... 

      self.ball?.removeFromParent() 
     } 
    } 

Answer 1

Versuchen Hinzufügen dieser Funktion:

func vectorFrom(point pointA: CGPoint, to pointB: CGPoint) -> CGVector { 
     let vector = CGVector(dx: pointB.x - pointA.x, dy: 310.0) 
     return vector 
    } 

Und dann diese Zeile ändern:

self.ball!.physicsBody?.applyImpulse(CGVector(dx: xpower, dy: self.jumpAmount)) 

dazu:

let dirVector = vectorFrom(point: tpoint, to: ball!.position) 
ball!.physicsBody?.applyImpulse(dirVector) 

Lassen Sie mich wissen, ob dies für Sie nicht funktionieren!

Answer 2

Try Ändern

if xpo > 0 { 
    xpower = xpower * -1 
} 

Um

if xpo > 0 { 
    xpower = xpower * 1.5 
}