/**** 
* Classes
****/ 
var ConfigContainer = Container.expand(function (config) {
	var self = Container.call(this);
	config = config || {};
	// Private variables
	var destroyCalled = false;
	// Public variables
	self.x = config.x || 0;
	self.y = config.y || 0;
	self.rotation = config.rotation || 0;
	self.alpha = config.alpha !== undefined ? config.alpha : 1.0;
	if (config.scale !== undefined || config.scaleX !== undefined || config.scaleY !== undefined) {
		var scaleX = config.scaleX !== undefined ? config.scaleX : config.scale !== undefined ? config.scale : 1;
		var scaleY = config.scaleY !== undefined ? config.scaleY : config.scale !== undefined ? config.scale : 1;
		self.scale.set(scaleX, scaleY);
	}
	// Public functions
	self.callDestroy = function () {
		if (!destroyCalled) {
			destroyCalled = true;
			self.onDestroy();
			destroy();
		}
	};
	self.onDestroy = function () {};
	// Enable inheritance
	return self;
});
var ProgressBar = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var width = config.width || 100;
	var height = config.height || 10;
	var weight = config.weight || 4;
	self.attachAsset('shapeBox', {
		width: width + 2 * weight,
		height: height + 2 * weight,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	var tint = config.tint || 0xFFFFFF;
	var bar = self.attachAsset('shapeBox', {
		x: -width,
		width: width,
		height: height,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: tint
	});
	self.updatePercentage = function (percentage) {
		bar.scale.x = Math.min(1.0, Math.max(0, percentage));
	};
	if (config.percentage !== undefined) {
		self.updatePercentage(config.percentage);
	}
});
var JoystickKnob = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	self.attachAsset('shapeEllipse', {
		width: config.size,
		height: config.size,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x808080,
		alpha: 0.5
	});
	self.attachAsset('joystickKnob', {
		width: config.size * 0.65,
		height: config.size * 0.65,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	self.attachAsset('outlineSmall', {
		width: config.size + 5,
		height: config.size + 5,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	return self;
});
var Joystick = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var size = config.size || 100;
	var maxDistance = size / 2;
	var base = self.attachAsset('shapeEllipse', {
		width: size,
		height: size,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xA0A0A0,
		alpha: 0.5
	});
	self.attachAsset('outlineLarge', {
		width: size + 5,
		height: size + 5,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	var knob = self.addChild(new JoystickKnob({
		size: size / 2
	}));
	var pressed = false;
	self.magnitude = 0;
	self.direction = undefined;
	self.down = function (x, y, obj) {
		if (x === 0 && y === 0) {
			self.magnitude = 0;
			self.direction = undefined;
		} else {
			var distance = Math.sqrt(x * x + y * y);
			if (distance <= size / 2) {
				pressed = true;
				knob.x = x;
				knob.y = y;
				self.magnitude = distance / maxDistance;
				self.direction = Math.atan2(y, x);
			}
		}
	};
	self.movement = function (x, y, obj) {
		if (pressed) {
			if (x === 0 && y === 0) {
				self.magnitude = 0;
				self.direction = undefined;
			} else {
				var distance = Math.sqrt(x * x + y * y);
				var direction = Math.atan2(y, x);
				if (distance > maxDistance) {
					x = Math.cos(direction) * maxDistance;
					y = Math.sin(direction) * maxDistance;
					distance = maxDistance;
				}
				knob.x = x;
				knob.y = y;
				self.magnitude = distance / maxDistance;
				self.direction = direction;
			}
		}
	};
	self.release = function (x, y, obj) {
		pressed = false;
		self.magnitude = 0;
		self.direction = undefined;
		knob.x = 0;
		knob.y = 0;
	};
	return self;
});
var Hero = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	self.speed = HERO_SPEED_BASE;
	self.healthMax = HERO_HEALTH_BASE;
	self.health = self.healthMax;
	var healthBar = self.addChild(new ProgressBar({
		y: -self.height / 2 - 10,
		tint: HERO_COLOUR
	}));
	self.update = function () {
		if (!isPaused && joystick.direction !== undefined) {
			self.rotation = joystick.direction;
			var speedX = Math.cos(joystick.direction) * joystick.magnitude * self.speed;
			var speedY = Math.sin(joystick.direction) * joystick.magnitude * self.speed;
			self.x += speedX;
			self.y += speedY;
			if (self.x < HERO_BORDER) {
				self.x = HERO_BORDER;
			} else if (self.x > GAME_WIDTH - HERO_BORDER) {
				self.x = GAME_WIDTH - HERO_BORDER;
			}
			if (self.y < HERO_BORDER) {
				self.y = HERO_BORDER;
			} else if (self.y > GAME_WIDTH - HERO_BORDER) {
				self.y = GAME_WIDTH - HERO_BORDER;
			}
			self.scale.x = speedX < 0 ? -1 : 1;
		}
	};
	self.takeDamage = function (amount) {
		self.health = Math.max(0, self.health - amount);
		healthBar.updatePercentage(self.health / self.healthMax);
		LK.effects.flashObject(self.collision, 0xAA0000, 1000);
		if (self.health <= 0) {
			LK.effects.flashScreen(0xAA0000, 1000);
			LK.showGameOver();
		}
	};
	self.healPercentage = function (percentage) {
		if (percentage > 0) {
			self.health = Math.min(self.healthMax, self.health + self.healthMax * percentage);
			LK.effects.flashObject(self.collision, HERO_COLOUR, 1000);
		}
		healthBar.updatePercentage(self.health / self.healthMax);
	};
});
var SortingContainer = Container.expand(function () {
	var self = Container.call(this);
	self.update = function () {
		self.children.sort(function (a, b) {
			return a.y - b.y;
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
;
//==============================================================================
// Global constants & settings
//==============================================================================
;
var GAME_TICKS = 60;
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
;
// Hero settings
var HERO_COLOUR = 0x0FA0FF;
var HERO_BORDER = 200;
var HERO_HEALTH_BASE = 100;
var HERO_HEALTH_BONUS = 30;
var HERO_SPEED_BASE = 8;
var HERO_SPEED_BONUS = 2;
var HERO_XP_REQUIRED = 20;
var HERO_XP_SCALING = 1.2;
// Enemy settings
var ENEMY_COLOUR = 0xAA0000;
var ENEMY_BORDER = 50; // Forced minimum move distance from the edge of the screen
var ENEMY_BORDER_SPAWN = -100;
var ENEMY_SPAWN_DELAY = 2 * GAME_TICKS;
var ENEMY_SPAWN_RATE_BASE = 1 * GAME_TICKS;
var ENEMY_SPAWN_RATE_SCALE = 0.75 * GAME_TICKS;
var ENEMY_SPAWN_RATE_MIN = 0.25 * GAME_TICKS;
var ENEMY_LIMIT = 40;
var ENEMY_XP_RANGE = 50;
var ENEMY_STATE_MOVE = 'move';
var ENEMY_STATE_FLEE = 'flee';
var ENEMY_STATE_ATTACK = 'attack';
var ENEMY_BASIC_SPEED = 2.5;
var ENEMY_BASIC_HEALTH_BASE = 10;
var ENEMY_BASIC_HEALTH_SCALE = 50;
var ENEMY_BASIC_HEALTH_OFFSET = 30;
var ENEMY_BASIC_ATTACK_RANGE = 100;
var ENEMY_BASIC_ATTACK_DAMAGE = 10;
var ENEMY_BASIC_ATTACK_COOLDOWN = GAME_TICKS / 6;
var ENEMY_BASIC_GRAPHICS_OFFSET = -100;
var ENEMY_BASIC_BOB_MAGNITUDE = 2;
var ENEMY_BASIC_BOB_PERIOD = 10;
var ENEMY_BASIC_XP_DROP_CHANCE = 0.3; // Per level of Luck
var ENEMY_RANGED_SPEED = 1.5;
var ENEMY_RANGED_HEALTH_BASE = 20;
var ENEMY_RANGED_HEALTH_SCALE = 60;
var ENEMY_RANGED_HEALTH_OFFSET = 20;
var ENEMY_RANGED_RANGE_MIN = 500;
var ENEMY_RANGED_RANGE_VAR = 250;
var ENEMY_RANGED_ATTACK_DAMAGE = 5;
var ENEMY_RANGED_MOVE_COOLDOWN_ADJUSTMENT = -0.5;
var ENEMY_RANGED_GRAPHICS_OFFSET = -100;
var ENEMY_RANGED_FLEE_DISTANCE_FACTOR = 0.35;
var ENEMY_RANGED_FLEE_SPEED_FACTOR = 1.5;
var ENEMY_RANGED_SCALE_PERIOD = 20;
var ENEMY_RANGED_SCALE_MAGNITUDE = 0.05;
var ENEMY_RANGED_XP_DROP_BASE = 2;
var ENEMY_RANGED_XP_DROP_CHANCE = 0.5; // Per level of Luck
var ENEMY_RANGED_DIFFICULTY = 0.2;
var ENEMY_RANGED_SPAWN_CHANCE_MIN = 0.4;
var ENEMY_RANGED_SPAWN_CHANCE_FACTOR = 0.5;
// Pickup settings
var PICKUP_HEAL_MINOR = 0.1;
var PICKUP_HEAL_MAJOR = 1.0;
var PICKUP_HEALTH_COUNT = 3;
var PICKUP_HEALTH_CHANCE = 0.02; // Per level of luck
var PICKUP_CRUCIFIX_COUNT = 1;
var PICKUP_CRUCIFIX_RANGE = 100;
var PICKUP_WEAPON_RANGE = 100;
;
//==============================================================================
// Instances & variables
//==============================================================================
;
// Variables
var isPaused = false;
var level = 1;
var experience = 0;
var levelRequirement = HERO_XP_REQUIRED;
var enemyCount = 0;
var minorBoonCount = 0;
var majorBoonCount = 0;
var pickupHealthCount = 0;
var pickupCrucifixCount = 0;
var difficultyScale = 0;
var startingWeapons = [];
var minorBoonLevels = {
	'Luck': 0,
	'Scale': 0,
	'Range': 0,
	'Damage': 0,
	'Rearm': 0,
	'Duration': 0,
	'Health': 0,
	'Speed': 0
};
var majorBoonLevels = {
	'Growth': 0,
	'Split': 0
};
;
// Game instances
game.attachAsset('grassTop', {
	y: HERO_BORDER - 100,
	x: GAME_WIDTH / 2,
	anchorX: 0.5
});
game.attachAsset('grassBot', {
	y: GAME_HEIGHT - HERO_BORDER + 100,
	x: GAME_WIDTH / 2,
	anchorX: 0.5,
	anchorY: 1.0
});
var backgroundContainer = game.addChild(new Container());
var midBackContainer = game.addChild(new SortingContainer());
var hero = game.addChild(new Hero({
	x: GAME_WIDTH / 2,
	y: GAME_HEIGHT / 2
}));
var midFrontContainer = game.addChild(new SortingContainer());
var foregroundContainer = game.addChild(new Container());
var joystick = game.addChild(new Joystick({
	size: 400,
	x: GAME_WIDTH - 400,
	y: GAME_HEIGHT - 400
}));
;
//==============================================================================
// Global events
//==============================================================================
;
// Add event listeners for the joystick
game.move = function (x, y, obj) {
	joystick.movement(x - joystick.x, y - joystick.y, obj);
};
game.up = function (x, y, obj) {
	joystick.release(x, y, obj);
};
;
//==============================================================================
// Global helper functions
//==============================================================================
;
function checkBounds(x, y) {
	var borderOrBorderX = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
	var borderY = arguments.length > 3 ? arguments[3] : undefined;
	return x < borderOrBorderX || x > 2048 - borderOrBorderX || y < (borderY || borderOrBorderX) || y > 2732 - (borderY || borderOrBorderX);
}
function addExperience(amount) {
	experience += amount;
	if (experience >= levelRequirement) {
		level++;
		experience -= levelRequirement;
		levelRequirement = Math.floor(levelRequirement * 1.2);
		// onLevelUp(level);
	}
	progressBar.setPercentage(experience / levelRequirement);
}

===================================================================
--- original.js
+++ change.js
@@ -27,33 +27,59 @@
 	self.onDestroy = function () {};
 	// Enable inheritance
 	return self;
 });
+var ProgressBar = ConfigContainer.expand(function (config) {
+	var self = ConfigContainer.call(this, config);
+	var width = config.width || 100;
+	var height = config.height || 10;
+	var weight = config.weight || 4;
+	self.attachAsset('shapeBox', {
+		width: width + 2 * weight,
+		height: height + 2 * weight,
+		anchorX: 0.5,
+		anchorY: 0.5,
+		tint: 0x000000
+	});
+	var tint = config.tint || 0xFFFFFF;
+	var bar = self.attachAsset('shapeBox', {
+		x: -width,
+		width: width,
+		height: height,
+		anchorX: 0.5,
+		anchorY: 0.5,
+		tint: tint
+	});
+	self.updatePercentage = function (percentage) {
+		bar.scale.x = Math.min(1.0, Math.max(0, percentage));
+	};
+	if (config.percentage !== undefined) {
+		self.updatePercentage(config.percentage);
+	}
+});
 var JoystickKnob = ConfigContainer.expand(function (config) {
 	var self = ConfigContainer.call(this, config);
 	self.attachAsset('shapeEllipse', {
 		width: config.size,
 		height: config.size,
 		anchorX: 0.5,
 		anchorY: 0.5,
-		tint: 0xA0A0A0,
+		tint: 0x808080,
 		alpha: 0.5
 	});
 	self.attachAsset('joystickKnob', {
 		width: config.size * 0.65,
 		height: config.size * 0.65,
 		anchorX: 0.5,
 		anchorY: 0.5,
-		tint: 0x000000,
-		alpha: 0.75
+		tint: 0x000000
 	});
 	self.attachAsset('outlineSmall', {
-		width: config.size,
-		height: config.size,
+		width: config.size + 5,
+		height: config.size + 5,
 		anchorX: 0.5,
 		anchorY: 0.5,
-		tint: 0x000000,
-		alpha: 0.75
+		tint: 0x000000
 	});
 	return self;
 });
 var Joystick = ConfigContainer.expand(function (config) {
@@ -64,18 +90,17 @@
 		width: size,
 		height: size,
 		anchorX: 0.5,
 		anchorY: 0.5,
-		tint: 0x808080,
+		tint: 0xA0A0A0,
 		alpha: 0.5
 	});
 	self.attachAsset('outlineLarge', {
-		width: size,
-		height: size,
+		width: size + 5,
+		height: size + 5,
 		anchorX: 0.5,
 		anchorY: 0.5,
-		tint: 0x000000,
-		alpha: 0.75
+		tint: 0x000000
 	});
 	var knob = self.addChild(new JoystickKnob({
 		size: size / 2
 	}));
@@ -125,8 +150,54 @@
 		knob.y = 0;
 	};
 	return self;
 });
+var Hero = ConfigContainer.expand(function (config) {
+	var self = ConfigContainer.call(this, config);
+	self.speed = HERO_SPEED_BASE;
+	self.healthMax = HERO_HEALTH_BASE;
+	self.health = self.healthMax;
+	var healthBar = self.addChild(new ProgressBar({
+		y: -self.height / 2 - 10,
+		tint: HERO_COLOUR
+	}));
+	self.update = function () {
+		if (!isPaused && joystick.direction !== undefined) {
+			self.rotation = joystick.direction;
+			var speedX = Math.cos(joystick.direction) * joystick.magnitude * self.speed;
+			var speedY = Math.sin(joystick.direction) * joystick.magnitude * self.speed;
+			self.x += speedX;
+			self.y += speedY;
+			if (self.x < HERO_BORDER) {
+				self.x = HERO_BORDER;
+			} else if (self.x > GAME_WIDTH - HERO_BORDER) {
+				self.x = GAME_WIDTH - HERO_BORDER;
+			}
+			if (self.y < HERO_BORDER) {
+				self.y = HERO_BORDER;
+			} else if (self.y > GAME_WIDTH - HERO_BORDER) {
+				self.y = GAME_WIDTH - HERO_BORDER;
+			}
+			self.scale.x = speedX < 0 ? -1 : 1;
+		}
+	};
+	self.takeDamage = function (amount) {
+		self.health = Math.max(0, self.health - amount);
+		healthBar.updatePercentage(self.health / self.healthMax);
+		LK.effects.flashObject(self.collision, 0xAA0000, 1000);
+		if (self.health <= 0) {
+			LK.effects.flashScreen(0xAA0000, 1000);
+			LK.showGameOver();
+		}
+	};
+	self.healPercentage = function (percentage) {
+		if (percentage > 0) {
+			self.health = Math.min(self.healthMax, self.health + self.healthMax * percentage);
+			LK.effects.flashObject(self.collision, HERO_COLOUR, 1000);
+		}
+		healthBar.updatePercentage(self.health / self.healthMax);
+	};
+});
 var SortingContainer = Container.expand(function () {
 	var self = Container.call(this);
 	self.update = function () {
 		self.children.sort(function (a, b) {
@@ -161,8 +232,10 @@
 var HERO_HEALTH_BASE = 100;
 var HERO_HEALTH_BONUS = 30;
 var HERO_SPEED_BASE = 8;
 var HERO_SPEED_BONUS = 2;
+var HERO_XP_REQUIRED = 20;
+var HERO_XP_SCALING = 1.2;
 // Enemy settings
 var ENEMY_COLOUR = 0xAA0000;
 var ENEMY_BORDER = 50; // Forced minimum move distance from the edge of the screen
 var ENEMY_BORDER_SPAWN = -100;
@@ -218,8 +291,11 @@
 //==============================================================================
 ;
 // Variables
 var isPaused = false;
+var level = 1;
+var experience = 0;
+var levelRequirement = HERO_XP_REQUIRED;
 var enemyCount = 0;
 var minorBoonCount = 0;
 var majorBoonCount = 0;
 var pickupHealthCount = 0;
@@ -242,20 +318,24 @@
 };
 ;
 // Game instances
 game.attachAsset('grassTop', {
-	y: HERO_BORDER,
+	y: HERO_BORDER - 100,
 	x: GAME_WIDTH / 2,
 	anchorX: 0.5
 });
 game.attachAsset('grassBot', {
-	y: GAME_HEIGHT - HERO_BORDER,
+	y: GAME_HEIGHT - HERO_BORDER + 100,
 	x: GAME_WIDTH / 2,
 	anchorX: 0.5,
 	anchorY: 1.0
 });
 var backgroundContainer = game.addChild(new Container());
 var midBackContainer = game.addChild(new SortingContainer());
+var hero = game.addChild(new Hero({
+	x: GAME_WIDTH / 2,
+	y: GAME_HEIGHT / 2
+}));
 var midFrontContainer = game.addChild(new SortingContainer());
 var foregroundContainer = game.addChild(new Container());
 var joystick = game.addChild(new Joystick({
 	size: 400,
@@ -273,5 +353,24 @@
 };
 game.up = function (x, y, obj) {
 	joystick.release(x, y, obj);
 };
-;
\ No newline at end of file
+;
+//==============================================================================
+// Global helper functions
+//==============================================================================
+;
+function checkBounds(x, y) {
+	var borderOrBorderX = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
+	var borderY = arguments.length > 3 ? arguments[3] : undefined;
+	return x < borderOrBorderX || x > 2048 - borderOrBorderX || y < (borderY || borderOrBorderX) || y > 2732 - (borderY || borderOrBorderX);
+}
+function addExperience(amount) {
+	experience += amount;
+	if (experience >= levelRequirement) {
+		level++;
+		experience -= levelRequirement;
+		levelRequirement = Math.floor(levelRequirement * 1.2);
+		// onLevelUp(level);
+	}
+	progressBar.setPercentage(experience / levelRequirement);
+}
\ No newline at end of file