var enemyCreator = function(){
    if (player._exists){
      var randomValue = game.rnd.integerInRange(0, game.canvas.height)
        var e = enemies.create(game.canvas.width, randomValue, 'enemy');
        game.physics.arcade.enable(e, Phaser.Physics.ARCADE);
        e.body.velocity.x = -200;
        game.physics.arcade.overlap(e, bullets, bulletHitEnemy, null, this);
        game.physics.enable(boss, Phaser.Physics.ARCADE);
        e.body.velocity.setTo((Math.floor(Math.random() * 1000) + 1), (Math.floor(Math.random() * 750) + 1));
        e.body.collideWorldBounds = true;
        e.body.bounce.set(1.05);
        e.body.gravity.set(0, 0);
      };
    };