Character.js

Character = function(gameState) {
	this.gameState = gameState;
};

Character.prototype = {
	GRAVITY: 1300,
	ACCELERATION: 75,
	JUMP_ACCELERATION: -500,
	MAX_SPEED: 500,
	turnedRight: false,
	jumping: true,

	preload: function() {
		this.gameState.load.spritesheet('torso',
			'assets/character_spritesheet_body.png', 40, 40);
		this.gameState.load.spritesheet('legs',
			'assets/character_spritesheet_legs.png', 40, 19);
		this.gameState.load.image('blood1', 'assets/meat1.png');
		this.gameState.load.image('blood2', 'assets/meat2.png');

		this.hookShot = new HookShot(this.gameState);
		this.hookShot.preload();
	},

	/**
	 * The initial position of the Character in world coordinates x, y.
	 */
	create: function(x, y) {
		this.legs = this.gameState.add.sprite(x, y, 'legs');
		this.legs.anchor.setTo(0, 0);

		this.torso = this.gameState.add.sprite(x+20, y-10, 'torso');
		this.torso.anchor.setTo(0.5, 0.5);
		// Whether or not the head is rotating to indicate a cooldown.
		this.torso.rotating = false;

		this.gameState.physics.arcade.enable(this.torso);
		this.torso.body.drag = {x: 500, y: 500};

		// Define the animations
		this.legs.animations.add('left', [ 0, 1, 2, 3 ], 15);
		this.legs.animations.add('right', [ 5, 6, 7, 4 ], 15);
		this.legs.animations.add('jumpLeft', [ 2 ], 10);
		this.legs.animations.add('jumpRight', [ 7 ], 10);
		this.legs.animations.add('landLeft', [ 1 ], 10);
		this.legs.animations.add('landRight', [ 6 ], 10);
		this.torso.animations.add('left', [ 0 ], 10);
		this.torso.animations.add('right', [ 1 ], 10);

		this.cursors = this.gameState.input.keyboard.createCursorKeys();

		this.torso.animations.play('right');
		this.legs.animations.play('jumpRight');
		this.jumping = true;

		this.hookShot.create(this.torso);
		this.enableWASD();

		this.meat = this.gameState.add.group();
		this.meat.enableBody = true;
	},

	/**
	 * @param inputEnabled Whether or not the user is able to control the character.
	 */
	update: function(inputEnabled) {
		// Do physics-y things first
		this.gameState.physics.arcade.collide(this.torso,
			this.gameState.ground);

		if(inputEnabled)
			this.checkKeyPresses();
		this.hookShot.update();

		// Walk or run left and right.
		var accel = 0;
		if (!this.hookShot.pulling){
			if (this.cursors.right.pressed) {
				accel = this.ACCELERATION;
				if(!this.jumping)
					this.legs.animations.play('right');
				this.turnedRight = true;
			} else if (this.cursors.left.pressed) {
				accel = -this.ACCELERATION;
				if(!this.jumping)
					this.legs.animations.play('left');
				this.turnedRight = false;
			}
		}

		if (this.torso.body.blocked.down) {
			this.torso.body.velocity.x += accel;
		}
		else {
			this.torso.body.velocity.x += accel / 4;
		}

		// Avoid nasty errors.
		if (isNaN(this.torso.body.velocity.x)) {
			this.torso.body.velocity.x = 0;
		}

		// Slow down bobby if he's touching any surface.
		if (this.torso.body.blocked.down || this.torso.body.blocked.up
				|| this.torso.body.blocked.left || this.torso.body.blocked.right) {
			this.torso.body.velocity.x -= this.torso.body.velocity.x / 10;
		}

		if(this.torso.body.blocked.down){
			// Landing animation, note that this must be before the jump
			// function.
			if (this.jumping) {
				this.jumping = false;
				if (this.torso.body.velocity.x > 0)
					this.legs.animations.play('landRight');
				else
					this.legs.animations.play('landLeft');
			}

			// Jump bobby, jump!
			if (this.cursors.up.pressed) {
				this.jumping = true;
				this.torso.body.velocity.y = this.JUMP_ACCELERATION;
				if (this.torso.body.velocity.x > 0)
					this.legs.animations.play('jumpRight');
				else
					this.legs.animations.play('jumpLeft');
			}
		}

		var angle = -game.physics.arcade.angleToPointer(this.torso) + Math.PI / 2;
		// Shoot on mouseDown, cancel on mouseUp
		if(inputEnabled){
			if (game.input.activePointer.isDown){
				this.hookShot.shoot(
					this.torso.x + 20 * Math.sin(angle),
					this.torso.y + 20 * Math.cos(angle),
					game.physics.arcade.angleToPointer(this.torso)
				);
				// To lock the head from following the mouse.
				this.torso.rotating = true;
			}
			else if (game.input.activePointer.isUp
							 && this.hookShot.shooting
							 || this.hookShot.pulling){
				this.hookShot.cancelHook();
			}
		}

		// So don't ask me exactly why I add π / 2 here, I just do.
		angle += Math.PI / 2;

		if(inputEnabled && !this.torso.rotating){
			if (angle > Math.PI * 3 / 2 || angle < Math.PI / 2) {
				this.torso.animations.frame = 0;
				this.torso.rotation = -angle;
			} else {
				this.torso.animations.frame = 1;
				this.torso.rotation = -angle - Math.PI;
			}
		}

		// Enforce the max speed
		if(!this.hookShot.pulling){
			if (this.torso.body.velocity.x >= this.MAX_SPEED)
				this.torso.body.velocity.x = this.MAX_SPEED;
			else if (this.torso.body.velocity.x <= -this.MAX_SPEED)
				this.torso.body.velocity.x = -this.MAX_SPEED;
			if (this.torso.body.velocity.y >= this.MAX_SPEED)
				this.torso.body.velocity.y = this.MAX_SPEED;
			else if (this.torso.body.velocity.y <= -this.MAX_SPEED)
				this.torso.body.velocity.y = -this.MAX_SPEED
		}

		this.legs.position.y = this.torso.body.y + 29;
		this.legs.position.x = this.torso.body.x;
	},

	characterOutsideWorld : function() {
		game.state.restart(game.state.current);
	},

	enableGravity: function() {
		this.torso.body.gravity.y = this.GRAVITY;
	},

	enableWASD: function() {
		this.WKey = game.input.keyboard.addKey(Phaser.Keyboard.W);
		this.AKey = game.input.keyboard.addKey(Phaser.Keyboard.A);
		this.DKey = game.input.keyboard.addKey(Phaser.Keyboard.D);
		this.ÄKey = game.input.keyboard.addKey(Phaser.Keyboard.Ä);
		this.EKey = game.input.keyboard.addKey(Phaser.Keyboard.E);
	},

	checkKeyPresses: function(){
		this.cursors.up.pressed = this.WKey.isDown || this.ÄKey.isDown || cursors.up.isDown;
		this.cursors.left.pressed = this.AKey.isDown || cursors.left.isDown;
		this.cursors.right.pressed = this.DKey.isDown || this.EKey.isDown || cursors.right.isDown;
	},

	enableCheckWorldBounds: function() {
		this.torso.checkWorldBounds = true;
		this.torso.events.onOutOfBounds.add(this.characterOutsideWorld);
	},

	blood: function() {
		this.torso.kill();

		var iterations = 0;

		for (var i = 0; i < 200; i++) {
			if(Math.random() < 0.5)
				var tmpmeat = this.gameState.add.sprite(this.torso.x, this.torso.y, 'blood1')
			else
				var tmpmeat = this.gameState.add.sprite(this.torso.x, this.torso.y, 'blood2');

			this.meat.add(tmpmeat);
			tmpmeat.body.gravity.y = 1200;
			tmpmeat.body.drag = {x: 500, y: 500};
			tmpmeat.body.angularDrag = 500;
			tmpmeat.anchor.setTo(0.5, 0.5);

			if (Math.random() < 0.5)
				var velocityX = -Math.pow(Math.random(), 2) * 700;
			else
				var velocityX = Math.pow(Math.random(), 2) * 700;
			tmpmeat.body.velocity.x = this.torso.body.velocity.x + velocityX;
			tmpmeat.body.velocity.y = this.torso.body.velocity.y + Math.pow(Math.random(), 2) * -700;
			tmpmeat.body.angularVelocity = tmpmeat.body.velocity.x * Math.random();
		}
	}
};