phaser.js

(function () {

    var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'game',
        {preload: preload, create: create, update: update, render: render}
    );

    function preload() {

        game.load.spritesheet('dude', '../assets/dude.png', 32, 48);
        game.load.spritesheet('chick', '../assets/chick.png', 16, 18);
        game.load.image('background', '../assets/background2.png');
        game.load.image('atari','../assets/atari800xl.png')

    }

    function create() {

        game.physics.startSystem(Phaser.Physics.ARCADE);
        game.physics.arcade.gravity.y = 100;

        var bg = game.add.tileSprite(0, 0, 800, 600, 'background');
        this.dude = game.add.sprite(0, 0, 'dude');
        game.physics.enable( this.dude, Phaser.Physics.ARCADE);
        this.dude.body.collideWorldBounds = true;

        this.dude.animations.add('left', [0, 1, 2, 3], 10, true);

        this.dude.animations.play('left');


        this.chick = game.add.sprite( game.world.centerX,0, 'chick');
        game.physics.enable( this.chick, Phaser.Physics.ARCADE);
        this.chick.body.collideWorldBounds = true;
        this.chick.body.bounce.setTo(1, 1);
        this.chick.scale.setTo(2, 2);

        this.cursors = game.input.keyboard.createCursorKeys();
    }

    function update() {
        game.physics.arcade.overlap(this.chick, this.dude, collision, null, this);

        function collision(chick,dude){
            chick.kill();
        }

        if (this.cursors.left.isDown) {
            this.dude.animations.play('left');
            this.dude.body.velocity.x = -100;
        }else if (this.cursors.right.isDown) {
            this.dude.animations.play('right');
            this.dude.body.velocity.x = 100;
        }else{
            this.dude.animations.stop();
            this.dude.body.velocity.x = 0;
        }

    }

    function render() {

    }

})();