Converting a game to state based.

[Speakeasys]

I have a space invaders game that I'm trying to convert from a single javascript instantiation to state based code. I want to add a menu screen, loading screen, etc... I'm just not sure how to do it.

Do I drop some of it in a Boot state and some of it in a Preload state? I was thinking the boot state would hold the create function and update function while the preload state would hold the preload function that creates the images and sprites. Any suggestions are much appreciated! 

 

 

Here is an example of what I'm aiming for:

 

https://github.com/RocketshipGames/phaser-fullscreen

 

 

And here is my current code:

var game = new Phaser.Game(800, 600, Phaser.AUTO, 'phaser-example', { preload: preload, create: create, update: update });function preload() {	game.load.image('bullet', 'assets/games/invaders/bullet.png');	game.load.image('enemyBullet', 'assets/games/invaders/enemy-bullet.png');	game.load.spritesheet('invader', 'assets/games/invaders/invader32x32x4.png', 32, 32);	game.load.image('ship', 'assets/games/invaders/player.png');	game.load.spritesheet('kaboom', 'assets/games/invaders/explode.png', 128, 128);	game.load.image('starfield', 'assets/games/invaders/starfield.png');	this.load.atlasJSONHash('fullscreen',                            'assets/fullscreen.png',                            'assets/fullscreen.json');}var player;var aliens;var bullets;var bulletTime = 0;var cursors;var fireButton;var explosions;var starfield;var score = 0;var scoreString = '';var scoreText;var lives;var enemyBullet;var firingTimer = 0;var stateText;var livingEnemies = [];function create() {	game.physics.startSystem(Phaser.Physics.ARCADE);	starfield = game.add.tileSprite(0, 0, 800, 600, 'starfield');	bullets = game.add.group();	bullets.enableBody = true;	bullets.physicsBodyType = Phaser.Physics.ARCADE;	bullets.createMultiple(30, 'bullet');	bullets.setAll('anchor.x', 0.5);	bullets.setAll('anchor.y', 1);	bullets.setAll('outOfBoundsKill', true);	bullets.setAll('checkWorldBounds', true);	enemyBullets = game.add.group();	enemyBullets.enableBody = true;	enemyBullets.physicsBodyType = Phaser.Physics.ARCADE;	enemyBullets.createMultiple(30, 'enemyBullet');	enemyBullets.setAll('anchor.x', 0.5);	enemyBullets.setAll('anchor.y', 1);	enemyBullets.setAll('outOfBoundsKill', true);	enemyBullets.setAll('checkWorldBounds', true);	player = game.add.sprite(400, 500, 'ship');	player.anchor.setTo(0.5, 0.5);		game.physics.enable(player, Phaser.Physics.ARCADE);	aliens = game.add.group();	aliens.enableBody = true;	aliens.physicsBodyType = Phaser.Physics.ARCADE;	createAliens();	scoreString = 'Score : ';	scoreText = game.add.text(10, 10, scoreString + score, { font: '34px Arial', fill: '#fff' });	lives = game.add.group();	game.add.text(game.world.width - 100, 10, 'Lives : ', { font: '34px Arial', fill: '#fff' });	stateText = game.add.text(game.world.centerX,game.world.centerY,' ', { font: '84px Arial', fill: '#fff' });	stateText.anchor.setTo(0.5, 0.5);	stateText.visible = false;	for (var i = 0; i < 3; i++) 	{		var ship = lives.create(game.world.width - 100 + (30 * i), 60, 'ship');		ship.anchor.setTo(0.5, 0.5);		ship.angle = 90;		ship.alpha = 0.4;	}	explosions = game.add.group();	explosions.createMultiple(30, 'kaboom');	explosions.forEach(setupInvader, this);	cursors = game.input.keyboard.createCursorKeys();	fireButton = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);	game.scale.fullScreenScaleMode = Phaser.ScaleManager.EXACT_FIT;	var fullscreen = this.add.button(this.game.width, this.game.height,'fullscreen', gofull,    				game.toggleFullscreen,this,'over', 'up', 'down');    fullscreen.pivot.x = fullscreen.width;        fullscreen.pivot.y = fullscreen.height;}function createAliens () {	for (var y = 0; y < 4; y++)	{		for (var x = 0; x < 10; x++)		{			var alien = aliens.create(x * 48, y * 50, 'invader');			alien.anchor.setTo(0.5, 0.5);			alien.animations.add('fly', [ 0, 1, 2, 3 ], 20, true);			alien.play('fly');			alien.body.moves = false;		}	}	aliens.x = 100;	aliens.y = 50;	var tween = game.add.tween(aliens).to( { x: 200 }, 2000, Phaser.Easing.Linear.None, true, 0, 1000, true);	tween.onLoop.add(descend, this);}function setupInvader (invader) {	invader.anchor.x = 0.5;	invader.anchor.y = 0.5;	invader.animations.add('kaboom');}function descend() {	aliens.y += 10;}function update() {	starfield.tilePosition.y += 2;	if (player.alive)	{		player.body.velocity.setTo(0, 0);				if (cursors.left.isDown)		{			player.body.velocity.x = -200;		}		else if (cursors.right.isDown)		{			player.body.velocity.x = 200;		}		if (fireButton.isDown)		{			fireBullet();		}		if (game.time.now > firingTimer)		{			enemyFires();		}		game.physics.arcade.overlap(bullets, aliens, collisionHandler, null, this);		game.physics.arcade.overlap(enemyBullets, player, enemyHitsPlayer, null, this);		game.physics.arcade.overlap(player, aliens, playerCollision, null, this);	}}function playerCollision (player,aliens){	player.kill();	live = lives.getFirstAlive();	if (live)	{			live.kill();	}	aliens.reset();	createAliens();	var explosion = explosions.getFirstExists(false);	explosion.reset(player.body.x, player.body.y);	explosion.play('kaboom', 30, false, true);	player.revive();	if (lives.countLiving() < 1)	{		player.kill();		enemyBullets.callAll('kill');		stateText.text=" GAME OVER \n Click to restart";		stateText.visible = true;		game.input.onTap.addOnce(restart,this);	}}function collisionHandler (bullet, alien) {	bullet.kill();	alien.kill();	score += 20;	scoreText.text = scoreString + score;	var explosion = explosions.getFirstExists(false);	explosion.reset(alien.body.x, alien.body.y);	explosion.play('kaboom', 30, false, true);	if (aliens.countLiving() == 0)	{		score += 1000;		scoreText.text = scoreString + score;		stateText.text = " You Won, \n Click to restart";		stateText.visible = true;		enemyBullets.callAll('kill');		game.input.onTap.addOnce(restart,this);	}}function enemyHitsPlayer (player,bullet) {	bullet.kill();	live = lives.getFirstAlive();	if (live)	{		live.kill();	}	var explosion = explosions.getFirstExists(false);	explosion.reset(player.body.x, player.body.y);	explosion.play('kaboom', 30, false, true);	if (lives.countLiving() < 1)	{		player.kill();		enemyBullets.callAll('kill');		stateText.text=" GAME OVER \n Click to restart";		stateText.visible = true;		game.input.onTap.addOnce(restart,this);			}}function enemyFires () {	enemyBullet = enemyBullets.getFirstExists(false);	livingEnemies.length=0;	aliens.forEachAlive(function(alien)	{		livingEnemies.push(alien);	});	if (enemyBullet && livingEnemies.length > 0)	{		var random=game.rnd.integerInRange(0,livingEnemies.length-1);		var shooter=livingEnemies[random];		enemyBullet.reset(shooter.body.x, shooter.body.y);		game.physics.arcade.moveToObject(enemyBullet,player,120);		firingTimer = game.time.now + 2000;	}}function fireBullet () {	if (game.time.now > bulletTime)	{		bullet = bullets.getFirstExists(false);		if (bullet)		{			bullet.reset(player.x, player.y + 8);			bullet.body.velocity.y = -400;			bulletTime = game.time.now + 200;		}	}}function resetBullet (bullet) {	bullet.kill();}function restart () {	lives.callAll('revive');	aliens.removeAll();	createAliens();	player.revive();	stateText.visible = false;}function gofull() {    if (game.scale.isFullScreen)    {        game.scale.stopFullScreen();    }    else    {        game.scale.startFullScreen(false);    }}

[minhaz1217]

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