GameScene.swift

//
//  GameScene.swift
//  spaceshooter
//
//

import SpriteKit

class GameScene: SKScene {
    override func didMoveToView(view: SKView) {
        /* Setup your scene here */
        
        self.backgroundColor = SKColor.blackColor()
        
        let starFieldEmmiter = SKEmitterNode(fileNamed: "StarField.sks")
        starFieldEmmiter.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMaxY(self.frame))
        starFieldEmmiter.zPosition = -20
        starFieldEmmiter.advanceSimulationTime(NSTimeInterval(starFieldEmmiter.particleLifetime))
        
        self.addChild(starFieldEmmiter)
        
        let starship = SKSpriteNode(imageNamed:"Spaceship")
        starship.xScale = 0.2
        starship.yScale = 0.2
        
        starship.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMinY(self.frame) + 100)
        
        self.addChild(starship)
    }
    
    override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
        /* Called when a touch begins */
        
        for touch in (touches as! Set<UITouch>) {
            let location = touch.locationInNode(self)
            
            let sprite = SKSpriteNode(imageNamed:"Spaceship")
            
            sprite.xScale = 0.5
            sprite.yScale = 0.5
            sprite.position = location
            
            let action = SKAction.rotateByAngle(CGFloat(M_PI), duration:1)
            
            sprite.runAction(SKAction.repeatActionForever(action))
            
            self.addChild(sprite)
        }
    }
   
    override func update(currentTime: CFTimeInterval) {
        /* Called before each frame is rendered */
    }
}