GameScene

gistfile1.txt

//
//  GameScene.swift
//  swiftSpriteKit
//
//  Created by anjani on 07/11/2014.
//  Copyright (c) 2014 anjani vangallu All rights reserved.

import SpriteKit

class GameScene: SKScene,SKPhysicsContactDelegate        {
    
       var hero    = SKSpriteNode()
       var ground   = SKNode()
   
    var heroBaseline = CGFloat(0)
    var onGround = true
    var velocityY = CGFloat(0)
    var gravity = CGFloat(0.0)

 
    
override func didMoveToView(view: SKView)
{
        
   //self.physicsWorld.gravity = CGVectorMake(0, -9.8)
    
     var herotexture = SKTexture(imageNamed: "hero.png")
     hero = SKSpriteNode(texture: herotexture)
     hero.position = CGPoint(x: CGRectGetMidX(self.frame)-250, y: CGRectGetMidY(self.frame)+100)
     hero.setScale(1.5)
     hero.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(100, 100))
     hero.physicsBody!.dynamic = true
     //hero.physicsBody!.mass = 1.0
     hero.physicsBody!.allowsRotation = false
     self.addChild(hero)
    
    ground.position = CGPointMake(0, 0)
    ground.physicsBody = SKPhysicsBody(rectangleOfSize: CGSizeMake(self.frame.size.width, 300))
    ground.physicsBody!.dynamic = false
    self.addChild(ground)
    
    var bg = SKTexture(imageNamed: "bg")
    
    var bgSKSpriteNode = SKSpriteNode(texture: bg)
    bgSKSpriteNode.position = CGPoint(x: CGRectGetMidX(self.frame), y: CGRectGetMidY(self.frame))
    bgSKSpriteNode.zPosition = -10
    self.addChild(bgSKSpriteNode)
    

}
    
func didBeginContact(contact: SKPhysicsContact){

    
}

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) {
        
        let touch = touches.anyObject() as UITouch
        
        let touchLocation = touch.locationInNode(self)
        if nodeAtPoint(touchLocation) == hero {
            var jump = SKAction.moveByX(0.0, y: 300.0, duration: 1.0)
            hero.runAction(jump
            )
        }

    }
    
    override func touchesEnded(touches: NSSet, withEvent event: UIEvent) {
        if self.velocityY < -19.0 {
            self.velocityY = -19.0
        }
    }
    
    override func update(currentTime: NSTimeInterval) {
       
        //jump
        self.velocityY += self.gravity
        self.hero.position.y -= velocityY
        
        if self.hero.position.y < self.ground.position.y{
            self.hero.position.y = self.ground.position.y
            velocityY = 0.0
            self.onGround = true
        }

    
}