arcade physics/ship trail

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

function preload() {

    game.load.image('chunk', 'assets/sprites/chunk.png');
    game.load.image('arrow', 'assets/sprites/asteroids_ship.png');

}

var sprite;
var bmd;

function create() {

    game.physics.startSystem(Phaser.Physics.ARCADE);

    //  Click on the left or right of the game to shoot the space ship in that direction

    game.stage.backgroundColor = '#124184';

    bmd = game.add.bitmapData(800, 600);
    bmd.context.fillStyle = '#ffffff';

    var bg = game.add.sprite(0, 0, bmd);

    game.physics.arcade.gravity.y = 100;

    sprite = game.add.sprite(32, 450, 'arrow');
    sprite.anchor.set(0.5);

    game.physics.enable(sprite, Phaser.Physics.ARCADE);

    sprite.body.collideWorldBounds = true;
    sprite.body.bounce.set(0.8);

    game.input.onDown.add(launch, this);

}

function launch() {

    if (game.input.x < sprite.x)
    {
        sprite.body.velocity.setTo(-200, -200);
    }
    else
    {
        sprite.body.velocity.setTo(200, -200);
    }

}

function update() {

    sprite.rotation = sprite.body.angle;

    bmd.context.fillRect(sprite.x, sprite.y, 2, 2);

    bmd.dirty = true;

}

function render() {

    game.debug.bodyInfo(sprite, 32, 32);

}