/**** 
* Classes
****/ 
var ConfigContainer = Container.expand(function (config) {
	var self = Container.call(this);
	config = config || {};
	var destroyCalled = false;
	self.tags = {};
	self.id = id++;
	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);
	}
	self.callDestroy = function () {
		if (!destroyCalled) {
			destroyCalled = true;
			self.onDestroy();
			self.destroy();
		}
	};
	self.onDestroy = function () {};
	return self;
});
var Weapon = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	self.cooldown = 0;
	self.update = function () {
		if (!isPaused) {
			if (--self.cooldown <= 0) {
				self.launchProjectiles();
			}
			self.onUpdate();
		}
	};
	self.onUpdate = function () {};
	self.launchProjectiles = function () {};
	return self;
});
var WeaponCross = Weapon.expand(function (config) {
	var self = Weapon.call(this, config);
	self.cooldown = WEAPON_CROSS_COOLDOWN_BASE;
	self.launchProjectiles = function () {
		if (enemyCount > 0) {
			var attackSpeed = 1 + WEAPON_CROSS_COOLDOWN_SCALING * minorBoonLevels[BOON_REARM];
			var scale = 1 + WEAPON_CROSS_SCALE_SCALING * minorBoonLevels[BOON_SCALE];
			var range = WEAPON_CROSS_RANGE_BASE + WEAPON_CROSS_RANGE_SCALING * minorBoonLevels[BOON_RANGE];
			var damage = WEAPON_CROSS_DAMAGE_BASE + WEAPON_CROSS_DAMAGE_SCALING * minorBoonLevels[BOON_DAMAGE];
			var linger = WEAPON_CROSS_LINGER_BASE + WEAPON_CROSS_LINGER_SCALING * minorBoonLevels[BOON_DURATION];
			var growthRate = WEAPON_CROSS_GROWTH_SCALING * majorBoonLevels[BOON_GROWTH];
			var splitCount = 1 + majorBoonLevels[BOON_SPLIT];
			var closestEnemy = null;
			var minDistanceSqr = Infinity;
			for (var i = 0; i < midgroundContainer.children.length; i++) {
				var child = midgroundContainer.children[i];
				if (child.tags[TAG_ENEMY] && !child.tags[TAG_PROJECTILE]) {
					var dx = hero.x - child.x;
					var dy = (hero.y - child.y) / GAME_PERSPECTIVE;
					var distanceSqr = dx * dx + dy * dy;
					if (distanceSqr < minDistanceSqr) {
						minDistanceSqr = distanceSqr;
						closestEnemy = child;
					}
				}
			}
			var dx = closestEnemy.x - hero.x;
			var dy = (closestEnemy.y - hero.y) / GAME_PERSPECTIVE;
			var direction = Math.atan2(dy, dx) - (splitCount - 1) * WEAPON_CROSS_SPLIT_INCREMENT / 2;
			for (var i = 0; i < splitCount; i++) {
				var splitDirection = splitCount > 1 ? i * WEAPON_CROSS_SPLIT_INCREMENT : 0;
				midgroundContainer.addChild(new ProjectileCross({
					x: hero.x,
					y: hero.y,
					elevation: WEAPON_CROSS_ELEVATION,
					direction: direction + splitDirection,
					linger: linger + Math.floor(WEAPON_CROSS_LINGER_VARIANCE * Math.random()),
					range: range * (1 + WEAPON_CROSS_RANGE_VARIATION * (1 - 2 * Math.random())),
					growthRate: growthRate,
					damage: damage,
					scale: scale
				}));
			}
			self.cooldown = WEAPON_CROSS_COOLDOWN_BASE / attackSpeed;
			LK.getSound('weaponCrossLaunch').play();
		}
	};
	return self;
});
var UiCountdownTimer = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var countdown = config.countdown;
	var ticker = 60;
	var countdownTxt = self.addChild(new BorderedText('', {
		anchorX: .5,
		anchorY: 0
	}));
	self.update = function () {
		if (!isPaused && countdown > 0 && --ticker <= 0) {
			ticker = 60;
			if (--countdown === 0) {
				countdownTxt.setFill('#AA0000');
				enemySpawner.spawnClass(EnemyBoss);
				LK.getSound('clockChime').play();
			}
			adjustLabel();
		}
		difficultyScale = 1 - countdown / config.countdown;
	};
	function adjustLabel() {
		var minutes = Math.floor(countdown / 60);
		var seconds = Math.abs(countdown) % 60;
		var minutesString = (minutes < 10 ? '0' : '') + minutes;
		var secondsString = (seconds < 10 ? '0' : '') + seconds;
		countdownTxt.setText(minutesString + ':' + secondsString);
	}
	adjustLabel();
	return self;
});
var UiBoonUpgradeButton = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var hidden = false;
	var count = 0;
	self.attachAsset('shapeEllipse', {
		width: config.size - 5,
		height: config.size - 5,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xA0A0A0,
		alpha: 0.5
	});
	var button = self.attachAsset('uiBoonSelection', {
		width: config.size,
		height: config.size,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	var countTxt = self.addChild(new BorderedText('0', {
		fill: config.fill,
		anchorX: .5,
		anchorY: .4
	}));
	self.visible = false;
	button.on('down', config.callback);
	self.setHidden = function (newHidden) {
		hidden = newHidden;
		self.checkHidden();
	};
	self.setCount = function (newCount) {
		count = newCount;
		countTxt.setText(newCount);
		self.checkHidden();
	};
	self.checkHidden = function () {
		self.visible = !hidden && count > 0;
	};
	return self;
});
var UiBoonSelection = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var selectedBoons;
	var availableBoons = Object.keys(config.boons).filter(function (boon) {
		return config.boons[boon] < BOON_MAX_LEVEL;
	});
	if (availableBoons.length <= BOON_OPTIONS) {
		selectedBoons = availableBoons;
	} else {
		selectedBoons = [];
		while (selectedBoons.length < BOON_OPTIONS && availableBoons.length > 0) {
			var boonIndex = Math.floor(Math.random() * availableBoons.length);
			selectedBoons.push(availableBoons.splice(boonIndex, 1)[0]);
		}
	}
	if (selectedBoons.length < BOON_OPTIONS) {
		selectedBoons.push(config.type === 'Minor' ? BOON_MINOR_HEAL : BOON_FULL_HEAL);
	}
	self.attachAsset('uiBoonBackground', {
		y: 50,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0xFFDEC4 // Slightly brown tint
	});
	self.addChild(new BorderedText('Choose ' + config.count, {
		y: -220,
		size: 60,
		anchorX: .5,
		anchorY: 0
	}));
	self.addChild(new BorderedText(config.type + ' Boon' + (config.count === 1 ? '' : 's'), {
		y: -150,
		size: 50,
		anchorX: .5,
		anchorY: 0
	}));
	for (var i = 0; i < selectedBoons.length; i++) {
		var boon = selectedBoons[i];
		var boonButton = self.attachAsset('uiBoonUpgrade', {
			y: i * 120,
			x: -120,
			anchorX: 0.5,
			anchorY: 0.5,
			tint: 0xDEC1AB // Slightly darker brown tint
		});
		boonButton.boon = boon;
		boonButton.on('down', function () {
			self.destroy();
			config.callback(this.boon);
		});
		var boonLevel = self.addChild(new BorderedText(config.boons[boon] !== undefined ? config.boons[boon] : '∞', {
			x: boonButton.x,
			y: boonButton.y,
			size: 50,
			anchorX: .5,
			anchorY: .5
		}));
		var boonName = self.addChild(new BorderedText(boon, {
			x: boonButton.x + 60,
			y: boonButton.y,
			size: 50,
			anchorX: 0,
			anchorY: .5
		}));
	}
	return self;
});
var ProjectileBoss = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	self.graphics = self.attachAsset('projectileBoss', {
		anchorX: -0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.rotation += ENEMY_BOSS_PROJECTILE_ROTATION;
		self.graphics.scale.x = 1 - GAME_PERSPECTIVE + GAME_PERSPECTIVE * Math.abs(Math.cos(self.rotation));
	};
	return self;
});
var ProgressBar = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var width = config.width || 120;
	var height = config.height || 15;
	var weight = config.weight || 6;
	self.attachAsset('shapeBox', {
		width: width + 2 * weight,
		height: height + 2 * weight,
		anchorX: 0.5,
		anchorY: 0.5,
		tint: 0x000000
	});
	var bar = self.attachAsset('shapeBox', {
		x: -width / 2,
		width: width,
		height: height,
		anchorY: 0.5,
		tint: config.tint || 0xFFFFFF
	});
	self.setPercentage = function (percentage) {
		bar.scale.x = Math.min(1.0, Math.max(0, percentage));
	};
	if (config.percentage !== undefined) {
		self.setPercentage(config.percentage);
	}
	return self;
});
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) {
		movePosition = undefined; // Clear the global move postion
		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 GameInstance = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	self.graphics = undefined;
	self.radius = config.radius || 0;
	self.elevation = config.elevation || 0;
	self.shadow = self.attachAsset('shapeEllipse', {
		anchorX: 0.5,
		anchorY: 0.5,
		width: self.radius * 2,
		height: self.radius * 2 * GAME_PERSPECTIVE,
		tint: 0x000000,
		alpha: 0.5
	});
	self.moveInDirection = function (direction, speed) {
		self.x += Math.cos(direction) * speed;
		self.y += Math.sin(direction) * speed * GAME_PERSPECTIVE;
	};
	self.intersectsInstance = function (instance) {
		return self.intersectsRadius(instance.x, instance.y, instance.radius);
	};
	self.intersectsRadius = function (pointX, pointY, radius) {
		var dx = pointX - self.x;
		var dy = (pointY - self.y) / GAME_PERSPECTIVE;
		var distance = self.radius + radius;
		return distance * distance >= dx * dx + dy * dy;
	};
	self.intersectsPoint = function (pointX, pointY) {
		var dx = pointX - self.x;
		var dy = (pointY - self.y) / GAME_PERSPECTIVE;
		return self.radius * self.radius >= dx * dx + dy * dy;
	};
	self.setRadius = function (newRadius) {
		self.radius = newRadius;
		self.shadow.width = newRadius * 2;
		self.shadow.height = newRadius * 2 * GAME_PERSPECTIVE;
		self.onRadiusChanged(newRadius);
	};
	self.setElevation = function (newElevation) {
		self.elevation = newElevation;
		if (self.graphics) {
			self.graphics.y = -newElevation;
		}
		self.onElevationChanged(newElevation);
	};
	self.onRadiusChanged = function (newRadius) {};
	self.onElevationChanged = function (newElevation) {};
	return self;
});
var ProjectileEnemy = GameInstance.expand(function (config) {
	var self = GameInstance.call(this, config);
	self.tags[TAG_ENEMY] = true;
	self.tags[TAG_PROJECTILE] = true;
	self.graphics = self.attachAsset('projectileEnemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		rotation: config.direction - MATH_QUARTER_PI
	});
	self.update = function () {
		if (!isPaused) {
			self.moveInDirection(config.direction, ENEMY_RANGED_PROJECTILE_SPEED);
			if (LK.ticks % 15 === 0) {
				self.graphics.scale.x *= -1;
				self.graphics.scale.y *= -1;
				self.graphics.rotation += Math.PI;
			}
			if (self.intersectsInstance(hero)) {
				hero.takeDamage(config.damage);
				self.callDestroy();
			} else if (!checkBounds(self.x, self.y, ENEMY_BORDER_SPAWN)) {
				self.callDestroy();
			}
		}
	};
	self.setElevation(self.elevation);
	return self;
});
var ProjectileCross = GameInstance.expand(function (config) {
	var self = GameInstance.call(this, config);
	var linger = config.linger;
	var range = config.range;
	var scale = config.scale;
	var hitMap = {};
	var growth = 1;
	var speed = WEAPON_CROSS_SPEED_BASE;
	self.graphics = self.attachAsset('projectileCross', {
		y: -config.elevation,
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: config.scale,
		scaleY: config.scale,
		rotation: Math.random() * MATH_2_PI
	});
	self.update = function () {
		self.graphics.rotation += WEAPON_CROSS_ROTATION;
		if (!isPaused) {
			self.moveInDirection(config.direction, speed);
			// Grow the projectile
			if (config.growthRate > 0) {
				growth += config.growthRate;
				scale = config.scale * growth;
				self.graphics.scale.x = scale;
				self.graphics.scale.y = scale;
				self.setRadius(WEAPON_CROSS_RADIUS_BASE * scale);
			}
			if (range <= 0) {
				if (speed > -WEAPON_CROSS_SPEED_BASE) {
					if (speed <= 0 && linger-- > 0) {
						speed = 0;
					} else {
						speed -= WEAPON_CROSS_SPEED_DECREMENT;
					}
				} else {
					speed = -WEAPON_CROSS_SPEED_BASE;
					range -= Math.abs(speed);
				}
			} else {
				range -= Math.abs(speed);
			}
			// Check for hits and deal damage
			var currentTick = LK.ticks;
			var damage = config.damage * (1 + (scale - 1) * WEAPON_CROSS_SCALE_DAMAGE_FACTOR);
			for (var i = midgroundContainer.children.length - 1; i >= 0; i--) {
				var child = midgroundContainer.children[i];
				if (child) {
					var lastHitTick = hitMap[child.id];
					if (child.tags[TAG_ENEMY] && !child.tags[TAG_PROJECTILE] && (!lastHitTick || currentTick - lastHitTick > WEAPON_CROSS_COOLDOWN_HIT) && self.intersectsInstance(child)) {
						hitMap[child.id] = currentTick;
						child.takeDamage(damage);
						LK.getSound('weaponCrossImpact').play();
					}
				}
			}
			// Destroy the projectile
			if (speed <= 0 && self.intersectsInstance(hero) || range < -config.range && !checkBounds(self.x, self.y, WEAPON_CROSS_BORDER)) {
				self.callDestroy();
			}
		}
	};
	self.setRadius(WEAPON_CROSS_RADIUS_BASE * config.scale);
	return self;
});
var Pickup = GameInstance.expand(function (config) {
	var self = GameInstance.call(this, config);
	self.tags[TAG_PICKUP] = true;
	self.activated = false;
	self.update = function () {
		if (!isPaused && !self.activated && self.intersectsInstance(hero)) {
			self.activate();
		}
	};
	self.activate = function () {
		self.activated = true;
		self.onActivate();
	};
	self.onActivate = function () {};
	return self;
});
var PickupWeapon = Pickup.expand(function (config) {
	var self = Pickup.call(this, config);
	var updateBase = self.update;
	self.tags[TAG_WEAPON] = true;
	self.graphics = self.attachAsset(config.graphics, {
		anchorX: 0.5,
		anchorY: 0.5,
		rotation: -Math.PI / 8
	});
	self.update = function () {
		updateBase();
		self.setElevation(WEAPON_HEIGHT_BASE + Math.sin(LK.ticks / WEAPON_HEIGHT_PERIOD) * WEAPON_HEIGHT_MAGNITUDE);
	};
	self.onActivate = function () {
		LK.getSound('pickupWeapon').play();
		hero.addChild(new config.weaponClass());
		// Destroy all other weapons
		for (var i = backgroundContainer.children.length - 1; i >= 0; i--) {
			var child = backgroundContainer.children[i];
			if (child.tags[TAG_PICKUP] && child.tags[TAG_WEAPON]) {
				child.callDestroy();
			}
		}
		self.callDestroy();
	};
	self.setElevation(WEAPON_HEIGHT_BASE);
	self.setRadius(self.graphics.width / 2);
	return self;
});
var PickupHealing = Pickup.expand(function (config) {
	var self = Pickup.call(this, config);
	var updateBase = self.update;
	self.tags[TAG_HEALING] = true;
	self.graphics = self.attachAsset('pickupHealing', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.update = function () {
		if (hero.health < hero.healthMax) {
			updateBase();
		}
	};
	self.onActivate = function () {
		hero.healPercentage(PICKUP_HEAL_MINOR);
		self.callDestroy();
	};
	self.onDestroy = function () {
		pickupHealthCount--;
	};
	pickupHealthCount++;
	self.setRadius(self.graphics.width / 2);
	return self;
});
var PickupExperience = Pickup.expand(function (config) {
	var self = Pickup.call(this, config);
	self.experience = config.experience;
	self.tags[TAG_EXPERIENCE] = true;
	// Try combine experience
	// var combineCount = 1;
	// var combineX = self.x;
	// var combineY = self.y;
	// for (var i = backgroundContainer.children.length - 1; i >= 0; i--) {
	// 	var child = backgroundContainer.children[i];
	// 	if (child && child.tags[TAG_PICKUP] && child.tags[TAG_EXPERIENCE] && child.intersectsRadius(self.x, self.y, PICKUP_XP_COMBINE_RANGE)) {
	// 		self.experience += child.experience;
	// 		combineX += child.x;
	// 		combineY += child.y;
	// 		child.callDestroy();
	// 	}
	// }
	// self.x = combineX / combineCount;
	// self.y = combineY / combineCount;
	// Set the graphics
	var size = self.experience >= PICKUP_XP_LARGE ? 'Large' : self.experience >= PICKUP_XP_MEDIUM ? 'Medium' : 'Small';
	self.graphics = self.createAsset('pickupExperience' + size, {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.update = function () {
		if (!isPaused) {
			if (self.activated) {
				var direction = Math.atan2(hero.y - self.y, hero.x - self.x);
				self.moveInDirection(direction, PICKUP_XP_SPEED);
				if (self.intersectsInstance(hero)) {
					self.callDestroy();
				}
			} else if (self.intersectsRadius(hero.x, hero.y, PICKUP_XP_ACTIVATE_RANGE)) {
				self.activate();
			}
		}
	};
	self.onDestroy = function () {
		hero.addExperience(self.experience);
	};
	self.setRadius(self.graphics.width / 2);
	return self;
});
var PickupCrucifix = Pickup.expand(function (config) {
	var self = Pickup.call(this, config);
	self.tags[TAG_CRUCIFIX] = true;
	self.graphics = self.attachAsset('pickupCrucifix', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.onActivate = function () {
		for (var i = midgroundContainer.children.length - 1; i >= 0; i--) {
			var child = midgroundContainer.children[i];
			if (child && child.tags[TAG_ENEMY] && !child.tags[TAG_BOSS]) {
				child.callDestroy();
			}
		}
		for (var i = backgroundContainer.children.length - 1; i >= 0; i--) {
			var child = backgroundContainer.children[i];
			if (child && child.tags[TAG_PICKUP] && (child.tags[TAG_EXPERIENCE] || child.tags[TAG_HEALING])) {
				child.activate();
			}
		}
		LK.getSound('pickupCrucifix').play();
		self.callDestroy();
	};
	self.onDestroy = function () {
		pickupCrucifixCount--;
	};
	pickupCrucifixCount++;
	self.setRadius(self.graphics.width / 2);
	return self;
});
var Hero = GameInstance.expand(function (config) {
	var self = GameInstance.call(this, config);
	var level = 1;
	var experience = 0;
	var levelRequirement = HERO_XP_REQUIRED;
	self.speed = HERO_SPEED_BASE;
	self.healthMax = HERO_HEALTH_BASE;
	self.health = self.healthMax;
	self.graphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	var experienceBar = self.addChild(new ProgressBar({
		y: -self.graphics.height - 25,
		percentage: 0.01
	}));
	var healthBar = self.addChild(new ProgressBar({
		y: -self.graphics.height - 35,
		tint: HERO_COLOUR
	}));
	var levelTxt = self.addChild(new BorderedText('1', {
		y: -self.graphics.height - 30,
		anchorX: 0.5,
		anchorY: 0.5,
		size: 65
	}));
	self.update = function () {
		if (!isPaused) {
			if (joystick.direction !== undefined) {
				self.moveInDirection(joystick.direction, joystick.magnitude * self.speed);
				self.graphics.scale.x = Math.cos(joystick.direction) < 0 ? -1 : 1;
			} else if (movePosition !== undefined && self.x !== movePosition.x && self.y !== movePosition.y) {
				var dy = (movePosition.y - hero.y) / GAME_PERSPECTIVE;
				var dx = movePosition.x - hero.x;
				var distance = Math.sqrt(dy * dy + dx * dx);
				if (distance <= self.speed) {
					self.x = movePosition.x;
					self.y = movePosition.y;
				} else {
					var direction = Math.atan2(dy, dx);
					self.moveInDirection(direction, self.speed);
				}
				self.graphics.scale.x = dx < 0 ? -1 : 1;
			}
			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_HEIGHT - HERO_BORDER) {
				self.y = GAME_HEIGHT - HERO_BORDER;
			}
		}
	};
	self.addExperience = function (amount) {
		experience += amount;
		LK.getSound('pickupExperience').play();
		if (experience >= levelRequirement) {
			level++;
			experience -= levelRequirement;
			levelRequirement = Math.floor(levelRequirement * 1.2);
			levelTxt.setText(level);
			if (level % BOON_MAJOR_LEVEL) {
				minorBoonCount++;
			} else {
				majorBoonCount++;
			}
			upgradeButton.setCount(minorBoonCount + majorBoonCount);
			LK.getSound('heroLeveled').play();
		}
		experienceBar.setPercentage(experience / levelRequirement);
	};
	self.takeDamage = function (amount) {
		self.health = Math.max(0, self.health - amount);
		LK.getSound('heroImpact').play();
		healthBar.setPercentage(self.health / self.healthMax);
		LK.effects.flashObject(self.graphics, 0xAA0000, 1000);
		if (self.health <= 0) {
			LK.effects.flashScreen(0xAA0000, 1000);
			LK.showGameOver();
			LK.getSound('heroDeath').play();
		}
	};
	self.healPercentage = function (percentage) {
		if (percentage > 0) {
			self.health = Math.min(self.healthMax, self.health + self.healthMax * percentage);
			LK.getSound('heroHealed').play();
			LK.effects.flashObject(self.graphics, HERO_COLOUR, 1000);
		}
		healthBar.setPercentage(self.health / self.healthMax);
	};
	return self;
});
var Enemy = GameInstance.expand(function (config) {
	var self = GameInstance.call(this, config);
	var damageTaken = 0;
	var cooldown = 0;
	self.tags[TAG_ENEMY] = true;
	self.healthBar;
	self.health = 0;
	self.healthOffset = 0;
	self.speed = 0;
	self.fleeRange = 0;
	self.attackRange = 0;
	self.attackCooldown = 0;
	self.animationAlpha = 0;
	self.xpDropBase = 0;
	self.xpDropChance = 0;
	self.xpDropExtraRolls = 0;
	self.update = function () {
		if (!isPaused) {
			var state = ENEMY_STATE_MOVE;
			var dx = hero.x - self.x;
			var dy = hero.y - self.y;
			var distanceSqr = dx * dx + dy * dy;
			if (checkBounds(self.x, self.y, ENEMY_BORDER)) {
				if (self.fleeRange > 0 && hero.intersectsRadius(self.x, self.y, self.fleeRange)) {
					state = ENEMY_STATE_FLEE;
				} else if (self.attackRange > 0 && hero.intersectsRadius(self.x, self.y, self.attackRange)) {
					state = ENEMY_STATE_ATTACK;
				}
			}
			var stateValues = self.adjustState(state, {
				cooldownAdjustment: 0,
				speedFactor: 0,
				canAttack: false
			});
			// Perform the movement
			if (stateValues.speedFactor !== 0) {
				self.moveInDirection(Math.atan2(dy, dx), self.speed * stateValues.speedFactor);
			}
			// Perform the attack if it is ready
			cooldown += stateValues.cooldownAdjustment;
			if (stateValues.canAttack && cooldown <= 0) {
				cooldown = self.attackCooldown;
				self.onAttack();
			}
		}
		self.animationAlpha++;
		if (LK.ticks % 15 === 0) {
			self.graphics.scale.x *= -1;
		}
		self.onUpdate();
	};
	self.adjustState = function (state, stateValues) {
		switch (state) {
			case ENEMY_STATE_MOVE:
				stateValues.speedFactor = 1;
				break;
			case ENEMY_STATE_FLEE:
				stateValues.cooldownAdjustment = self.attackCooldown - cooldown; // Reset cooldown
				stateValues.speedFactor = -1;
				break;
			case ENEMY_STATE_ATTACK:
				stateValues.cooldownAdjustment = -1;
				stateValues.canAttack = true;
				break;
		}
		return stateValues;
	};
	self.takeDamage = function (amount) {
		damageTaken += amount;
		if (damageTaken >= self.health) {
			self.callDestroy();
		} else {
			if (!self.healthBar) {
				self.healthBar = self.addChild(new ProgressBar({
					y: -self.elevation - self.graphics.height * self.graphics.anchor.x + self.healthOffset,
					tint: ENEMY_COLOUR
				}));
			}
			self.healthBar.setPercentage(Math.max(0, 1 - damageTaken / self.health));
			LK.effects.flashObject(self.graphics, ENEMY_COLOUR, 1000);
		}
	};
	self.onDestroy = function () {
		enemyCount--;
		dropExperience();
		foregroundContainer.addChild(new EffectEnemyDeath({
			x: self.x,
			y: self.y - self.elevation - self.graphics.height * self.graphics.anchor.y
		}));
		LK.getSound('enemyDeath').play();
	};
	self.onUpdate = function () {};
	self.onAttack = function () {};
	function dropExperience() {
		if (checkBounds(self.x, self.y, HERO_BORDER)) {
			var amount = self.xpDropBase;
			if (self.xpDropChance > 0) {
				for (var i = 0; i <= self.xpDropExtraRolls + minorBoonLevels[BOON_LUCK]; i++) {
					if (Math.random() < self.xpDropChance) {
						amount++;
					}
				}
			}
			if (amount > 0) {
				backgroundContainer.addChild(new PickupExperience({
					x: self.x + ENEMY_XP_RANGE * (1 - 2 * Math.random()),
					y: self.y + ENEMY_XP_RANGE * (1 - 2 * Math.random()),
					experience: amount
				}));
			}
		}
	}
	enemyCount++;
	return self;
});
var EnemyRanged = Enemy.expand(function (config) {
	var self = Enemy.call(this, config);
	var adjustStateBase = self.adjustState;
	self.speed = ENEMY_RANGED_SPEED;
	self.attackRange = ENEMY_RANGED_RANGE_MIN + ENEMY_RANGED_RANGE_VAR * Math.random();
	self.attackCooldown = ENEMY_RANGED_ATTACK_COOLDOWN;
	self.fleeRange = self.attackRange * ENEMY_RANGED_FLEE_DISTANCE_FACTOR;
	self.health = ENEMY_RANGED_HEALTH_BASE + ENEMY_RANGED_HEALTH_SCALE * difficultyScale;
	self.healthOffset = ENEMY_RANGED_HEALTH_OFFSET;
	self.xpDropBase = ENEMY_RANGED_XP_DROP_BASE;
	self.xpDropChance = ENEMY_RANGED_XP_DROP_CHANCE;
	self.xpDropExtraRolls = ENEMY_RANGED_XP_EXTRA_ROLLS;
	self.graphics = self.attachAsset('enemyRanged', {
		anchorX: 0.5,
		anchorY: 0.6
	});
	self.onUpdate = function () {
		// Scale the enemy up and down
		var newScale = 1 + Math.sin(self.animationAlpha / ENEMY_RANGED_SCALE_PERIOD) * ENEMY_RANGED_SCALE_MAGNITUDE;
		self.graphics.scale.x = newScale;
		self.graphics.scale.y = newScale;
		self.setRadius(ENEMY_RANGED_RADIUS_BASE * newScale);
	};
	self.adjustState = function (state, stateValues) {
		var newStateValues = adjustStateBase(state, stateValues);
		switch (state) {
			case ENEMY_STATE_MOVE:
				newStateValues.cooldownAdjustment += ENEMY_RANGED_MOVE_COOLDOWN_ADJUSTMENT;
				break;
			case ENEMY_STATE_FLEE:
				newStateValues.speedFactor *= ENEMY_RANGED_FLEE_SPEED_FACTOR;
				break;
		}
		return newStateValues;
	};
	self.onAttack = function () {
		LK.effects.flashObject(self.graphics, 0x000000, 500);
		var dx = hero.x - self.x;
		var dy = (hero.y - self.y) / GAME_PERSPECTIVE;
		midgroundContainer.addChild(new ProjectileEnemy({
			x: self.x,
			y: self.y,
			direction: Math.atan2(dy, dx),
			elevation: self.elevation,
			radius: ENEMY_RANGED_PROJECTILE_RADIUS,
			damage: ENEMY_RANGED_ATTACK_DAMAGE
		}));
	};
	self.setElevation(ENEMY_RANGED_ELEVATION);
	self.setRadius(ENEMY_RANGED_RADIUS_BASE);
	return self;
});
var EnemyBoss = Enemy.expand(function (config) {
	var self = Enemy.call(this, config);
	var adjustStateBase = self.adjustState;
	var container = self.addChild(new SortingContainer(function (a, b) {
		return Math.sin(a.rotation) - Math.sin(b.rotation);
	}));
	self.tags[TAG_BOSS] = true;
	self.speed = ENEMY_BOSS_SPEED;
	self.health = ENEMY_BOSS_HEALTH;
	self.attackRange = ENEMY_BOSS_ATTACK_RANGE;
	self.attackCooldown = ENEMY_BOSS_ATTACK_COOLDOWN;
	self.fleeRange = ENEMY_BOSS_FLEE_RANGE;
	self.graphics = container.attachAsset('enemyBoss', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	for (var i = 0; i < ENEMY_BOSS_PROJECTILE_COUNT; i++) {
		var angle = i * 2 * Math.PI / ENEMY_BOSS_PROJECTILE_COUNT;
		container.addChild(new ProjectileBoss({
			y: ENEMY_BOSS_PROJECTILE_OFFSET,
			rotation: angle
		}));
	}
	self.adjustState = function (state, stateValues) {
		var newStateValues = adjustStateBase(state, stateValues);
		switch (state) {
			case ENEMY_STATE_FLEE:
				newStateValues.speedFactor = 0;
				newStateValues.cooldownAdjustment = -1;
				newStateValues.canAttack = true;
				break;
			case ENEMY_STATE_ATTACK:
				newStateValues.speedFactor = 1;
				break;
		}
		return newStateValues;
	};
	self.onAttack = function () {
		hero.takeDamage(ENEMY_BOSS_ATTACK_DAMAGE);
	};
	self.onDestroy = function () {
		LK.effects.flashScreen(0x000000, 1000);
		LK.getSound('enemyRoar').play();
		enemyCount--;
		enemySpawner.setEnabled(false);
		upgradeButton.setHidden(true);
		for (var i = midgroundContainer.children.length - 1; i >= 0; i--) {
			var child = midgroundContainer.children[i];
			if (child && child.tags[TAG_ENEMY] && !child.tags[TAG_BOSS]) {
				child.callDestroy();
			}
		}
		for (var i = backgroundContainer.children.length - 1; i >= 0; i--) {
			var child = backgroundContainer.children[i];
			if (child && child.tags[TAG_PICKUP] && (child.tags[TAG_EXPERIENCE] || child.tags[TAG_HEALING])) {
				child.activate();
			}
		}
		backgroundContainer.addChild(new PickupWeapon({
			x: self.x,
			y: self.y,
			scale: 1.25,
			graphics: 'weaponBoss',
			weaponClass: WeaponBoss
		}));
		LK.gui.top.addChild(new BorderedText('VICTORY', {
			y: 200,
			size: 200,
			fill: '#FFFFFF',
			border: '#000000',
			anchorX: 0.5,
			anchorY: 0.5
		}));
	};
	self.healthOffset = -self.graphics.height + ENEMY_BOSS_HEALTH_OFFSET;
	self.setRadius(ENEMY_BOSS_FLEE_RANGE);
	self.takeDamage(0);
	return self;
});
var EnemyBasic = Enemy.expand(function (config) {
	var self = Enemy.call(this, config);
	var onDestroyBase = self.onDestroy;
	self.speed = ENEMY_BASIC_SPEED;
	self.health = ENEMY_BASIC_HEALTH_BASE + ENEMY_BASIC_HEALTH_SCALE * difficultyScale;
	self.attackRange = ENEMY_BASIC_ATTACK_RANGE;
	self.attackCooldown = ENEMY_BASIC_ATTACK_COOLDOWN;
	self.xpDropChance = ENEMY_BASIC_XP_DROP_CHANCE;
	self.xpDropExtraRolls = ENEMY_BASIC_XP_EXTRA_ROLLS;
	self.graphics = self.attachAsset('enemyBasic', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.onUpdate = function () {
		self.setElevation(ENEMY_BASIC_GRAPHICS_OFFSET + ENEMY_BASIC_BOB_MAGNITUDE * Math.sin(self.animationAlpha / ENEMY_BASIC_BOB_PERIOD));
		if (self.healthBar) {
			self.healthOffset = -self.elevation - self.graphics.height + ENEMY_BASIC_HEALTH_OFFSET;
			self.healthBar.y = self.healthOffset;
		}
	};
	self.onAttack = function () {
		hero.takeDamage(ENEMY_BASIC_ATTACK_DAMAGE);
	};
	self.onDestroy = function () {
		onDestroyBase();
		if (checkBounds(self.x, self.y, HERO_BORDER)) {
			if (pickupCrucifixCount < PICKUP_CRUCIFIX_COUNT && Math.random() < Math.sqrt(minorBoonLevels['Luck']) / 100) {
				backgroundContainer.addChild(new PickupCrucifix({
					x: self.x,
					y: self.y
				}));
			} else if (pickupHealthCount < PICKUP_HEALTH_COUNT) {
				for (var k = 0; k <= 1 + minorBoonLevels['Luck']; k++) {
					if (Math.random() < PICKUP_HEALTH_CHANCE) {
						backgroundContainer.addChild(new PickupHealing({
							x: self.x,
							y: self.y
						}));
						break;
					}
				}
			}
		}
	};
	self.setElevation(ENEMY_BASIC_GRAPHICS_OFFSET);
	self.setRadius(45);
	return self;
});
var EffectEnemyDeath = ConfigContainer.expand(function (config) {
	var self = ConfigContainer.call(this, config);
	var initialLifetime = 0.2 * GAME_TICKS;
	var remainingLifetime = initialLifetime;
	self.attachAsset('effectEnemyDeath', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		if (--remainingLifetime <= 0) {
			self.callDestroy();
		}
		var lifetime = remainingLifetime / initialLifetime;
		var newScale = 2 - lifetime;
		self.alpha = lifetime;
		self.scale.x = newScale;
		self.scale.y = newScale;
	};
	return self;
});
var BorderedText = ConfigContainer.expand(function (text, config) {
	var self = ConfigContainer.call(this, config);
	config = config || {};
	var anchorX = config.anchorX !== undefined ? config.anchorX : 0;
	var anchorY = config.anchorY !== undefined ? config.anchorY : 1;
	var size = config.size !== undefined ? config.size : TEXT_DEFAULT_SIZE;
	var weight = config.weight !== undefined ? config.weight : TEXT_DEFAULT_WEIGHT;
	var font = config.font !== undefined ? config.font : TEXT_DEFAULT_FONT;
	var textFill = config.fill !== undefined ? config.fill : TEXT_DEFAULT_FILL;
	var borderFill = config.border !== undefined ? config.border : TEXT_DEFAULT_BORDER;
	var textAssets = [];
	var mainAsset;
	self.setText = setText;
	self.setFill = setFill;
	function setText(newText) {
		for (var i = 0; i < textAssets.length; i++) {
			textAssets[i].setText(newText);
		}
	}
	function setFill(newFill) {
		textFill = newFill;
		mainAsset.fill = newFill;
	}
	function buildTextAssets(newText) {
		for (var i = 0; i < TEXT_OFFSETS.length; i++) {
			var main = i === TEXT_OFFSETS.length - 1;
			var fill = main ? textFill : borderFill;
			var textAsset = textAssets[i];
			if (textAsset) {
				textAsset.destroy();
			}
			textAsset = self.addChild(new Text2(newText, {
				fill: fill,
				font: font,
				size: size
			}));
			textAsset.anchor = {
				x: anchorX,
				y: anchorY
			}; // NOTE: Cannot be set in config
			textAsset.x = TEXT_OFFSETS[i][0] * weight; // NOTE: Cannot be set in config
			textAsset.y = TEXT_OFFSETS[i][1] * weight; // NOTE: Cannot be set in config
			textAssets[i] = textAsset;
		}
		mainAsset = textAssets[TEXT_OFFSETS.length - 1];
	}
	;
	buildTextAssets(text);
	return self;
});
var EnemySpawner = Container.expand(function () {
	var self = Container.call(this);
	var borderedWidth = GAME_WIDTH - 2 * ENEMY_BORDER_SPAWN;
	var borderedHeight = GAME_HEIGHT - 2 * ENEMY_BORDER_SPAWN;
	var spawnTimer = ENEMY_SPAWN_DELAY;
	var enabled = true;
	self.update = function () {
		if (!isPaused && enabled && enemyCount < ENEMY_LIMIT && --spawnTimer <= 0) {
			spawnTimer = Math.max(ENEMY_SPAWN_RATE_MIN, ENEMY_SPAWN_RATE_BASE - Math.floor(ENEMY_SPAWN_RATE_SCALE * difficultyScale));
			var isRanged = difficultyScale >= ENEMY_RANGED_SPAWN_DIFFICULTY && Math.random() < Math.max(ENEMY_RANGED_SPAWN_CHANCE_MIN, ENEMY_RANGED_SPAWN_CHANCE_FACTOR * difficultyScale);
			var enemyClass = isRanged ? EnemyRanged : EnemyBasic;
			self.spawnClass(enemyClass);
		}
	};
	self.spawnClass = function (enemyClass) {
		var spawnX, spawnY;
		var side = Math.floor(Math.random() * 4);
		var distance = Math.random();
		switch (side) {
			case 0:
				spawnX = borderedWidth * distance;
				spawnY = ENEMY_BORDER_SPAWN;
				break;
			case 1:
				spawnX = GAME_WIDTH - ENEMY_BORDER_SPAWN;
				spawnY = borderedHeight * distance;
				break;
			case 2:
				spawnX = borderedWidth * distance;
				spawnY = GAME_HEIGHT - ENEMY_BORDER_SPAWN;
				break;
			case 3:
				spawnX = ENEMY_BORDER_SPAWN;
				spawnY = borderedHeight * distance;
				break;
		}
		midgroundContainer.addChild(new enemyClass({
			x: spawnX,
			y: spawnY
		}));
	};
	self.setEnabled = function (newEnabled) {
		enabled = newEnabled;
	};
	return self;
});
var SortingContainer = Container.expand(function (sortFunction) {
	var self = Container.call(this);
	self.update = function () {
		self.children.sort(sortFunction || defaultSort);
	};
	function defaultSort(a, b) {
		return a.y - b.y;
	}
	return self;
});
var WeaponBoss = Container.expand(function (config) {
	var self = Container.call(this, config);
	LK.showGameOver();
	return self;
});

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

/**** 
* Game Code
****/ 
// Play background ambient sound every 10 seconds
LK.setInterval(function () {
	backgroundAmbientSound.play();
}, 10000);
// Play background ambient sound on game start
var backgroundAmbientSound = LK.getSound('backgroundAmbient');
backgroundAmbientSound.play();
;
//==============================================================================
// Global constants & settings
//==============================================================================
;
// Math constants / pre-calculations
var MATH_2_PI = Math.PI * 2;
var MATH_HALF_PI = Math.PI / 2;
var MATH_QUARTER_PI = Math.PI / 4;
var MATH_HALF_ROOT_3 = Math.sqrt(3) / 2; // Required by: TEXT_OFFSETS, BorderedText, BorderedSymbol, BorderedShape, SymbolText
var MATH_APPROX_ZERO = 0.0000001;
;
// Text settings
var TEXT_OFFSETS = [[0, 1], [MATH_HALF_ROOT_3, 0.5], [MATH_HALF_ROOT_3, -0.5], [0, -1], [-MATH_HALF_ROOT_3, -0.5], [-MATH_HALF_ROOT_3, 0.5], [0, 0]]; // Required by: BorderedText, BorderedSymbol, BorderedShape, SymbolText
var TEXT_DEFAULT_WEIGHT = 4; // Required by: BorderedText, BorderedSymbol, BorderedShape, SymbolText
var TEXT_DEFAULT_BORDER = '#000000'; // Required by: BorderedText, BorderedSymbol, BorderedShape, SymbolText
var TEXT_DEFAULT_FILL = '#FFFFFF'; // Required by: BorderedText, SymbolText
var TEXT_DEFAULT_FONT = 'Consolas'; // Required by: BorderedText, SymbolText
var TEXT_DEFAULT_SIZE = 120; // Required by: BorderedText, SymbolText
;
// Game constants
var GAME_TICKS = 60;
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var GAME_PERSPECTIVE = 0.5;
;
// Tags
var TAG_ENEMY = 'Enemy';
var TAG_BOSS = 'Boss';
var TAG_PROJECTILE = 'Projectile';
var TAG_PICKUP = 'Pickup';
var TAG_EXPERIENCE = 'Experience';
var TAG_CRUCIFIX = 'Crucifix';
var TAG_WEAPON = 'Weapon';
var TAG_HEALING = 'Healing';
;
// Hero settings
var HERO_COLOUR = 0x0FA0FF;
var HERO_BORDER = 250;
var HERO_HEALTH_BASE = 100;
var HERO_HEALTH_BONUS = 30;
var HERO_SPEED_BASE = 10;
var HERO_SPEED_BONUS = 3;
var HERO_XP_REQUIRED = 15;
var HERO_XP_SCALING = 1.15;
;
// Boon settings
var BOON_OPTIONS = 3;
var BOON_MAX_LEVEL = 3;
var BOON_MAJOR_LEVEL = 5;
var BOON_LUCK = 'Luck';
var BOON_SCALE = 'Scale';
var BOON_RANGE = 'Range';
var BOON_DAMAGE = 'Damage';
var BOON_REARM = 'Rearm';
var BOON_DURATION = 'Duration';
var BOON_HEALTH = 'Health';
var BOON_SPEED = 'Speed';
var BOON_GROWTH = 'Growth';
var BOON_SPLIT = 'Split';
var BOON_FULL_HEAL = 'Full Heal';
var BOON_MINOR_HEAL = 'Minor Heal';
;
// Weapon settings
var WEAPON_OFFSET = 350;
var WEAPON_HEIGHT_BASE = 50;
var WEAPON_HEIGHT_PERIOD = 10;
var WEAPON_HEIGHT_MAGNITUDE = 10;
;
var WEAPON_CROSS_SPLIT_INCREMENT = 20 / 180 * Math.PI;
var WEAPON_CROSS_RANGE_BASE = 200;
var WEAPON_CROSS_RANGE_SCALING = 125;
var WEAPON_CROSS_RANGE_VARIATION = 0.1;
var WEAPON_CROSS_RADIUS_BASE = 50;
var WEAPON_CROSS_SCALE_SCALING = 0.2;
var WEAPON_CROSS_SCALE_DAMAGE_FACTOR = 0.1;
var WEAPON_CROSS_COOLDOWN_HIT = GAME_TICKS / 6;
var WEAPON_CROSS_COOLDOWN_BASE = 120;
var WEAPON_CROSS_COOLDOWN_SCALING = 0.15;
var WEAPON_CROSS_DAMAGE_BASE = 15;
var WEAPON_CROSS_DAMAGE_SCALING = 10;
var WEAPON_CROSS_LINGER_BASE = 0;
var WEAPON_CROSS_LINGER_VARIANCE = GAME_TICKS / 6;
var WEAPON_CROSS_LINGER_SCALING = 0.25 * GAME_TICKS;
var WEAPON_CROSS_GROWTH_SCALING = 0.20 / GAME_TICKS;
var WEAPON_CROSS_SPEED_BASE = 30;
var WEAPON_CROSS_SPEED_DECREMENT = 1;
var WEAPON_CROSS_ELEVATION = 175;
var WEAPON_CROSS_ROTATION = 0.2;
var WEAPON_CROSS_BORDER = -1000;
;
// Enemy settings
var ENEMY_COLOUR = 0xAA0000;
var ENEMY_BORDER = 50; // Forced minimum move distance from the edge of the screen
var ENEMY_BORDER_SPAWN = -300;
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 / 3;
var ENEMY_BASIC_GRAPHICS_OFFSET = 115;
var ENEMY_BASIC_BOB_MAGNITUDE = 15;
var ENEMY_BASIC_BOB_PERIOD = 15;
var ENEMY_BASIC_XP_DROP_CHANCE = 0.3; // Per level of Luck
var ENEMY_BASIC_XP_EXTRA_ROLLS = 2;
;
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 = 600;
var ENEMY_RANGED_RANGE_VAR = 250;
var ENEMY_RANGED_ATTACK_DAMAGE = 5;
var ENEMY_RANGED_ATTACK_COOLDOWN = 4 * GAME_TICKS;
var ENEMY_RANGED_MOVE_COOLDOWN_ADJUSTMENT = -0.25;
var ENEMY_RANGED_ELEVATION = 150;
var ENEMY_RANGED_FLEE_DISTANCE_FACTOR = 0.5;
var ENEMY_RANGED_FLEE_SPEED_FACTOR = 2.0;
var ENEMY_RANGED_SCALE_PERIOD = 20;
var ENEMY_RANGED_SCALE_MAGNITUDE = 0.05;
var ENEMY_RANGED_RADIUS_BASE = 60;
var ENEMY_RANGED_XP_DROP_BASE = 2;
var ENEMY_RANGED_XP_DROP_CHANCE = 0.5; // Per level of Luck
var ENEMY_RANGED_XP_EXTRA_ROLLS = 0;
var ENEMY_RANGED_SPAWN_DIFFICULTY = 0.2;
var ENEMY_RANGED_SPAWN_CHANCE_MIN = 0.2;
var ENEMY_RANGED_SPAWN_CHANCE_FACTOR = 0.6;
var ENEMY_RANGED_PROJECTILE_SPEED = 10;
var ENEMY_RANGED_PROJECTILE_RADIUS = 25;
;
var ENEMY_BOSS_SPEED = 5.0;
var ENEMY_BOSS_HEALTH = 5000;
var ENEMY_BOSS_HEALTH_OFFSET = -30;
var ENEMY_BOSS_ATTACK_RANGE = 250;
var ENEMY_BOSS_ATTACK_DAMAGE = 5;
var ENEMY_BOSS_ATTACK_COOLDOWN = GAME_TICKS / 6;
var ENEMY_BOSS_FLEE_RANGE = 90;
var ENEMY_BOSS_PROJECTILE_COUNT = 5;
var ENEMY_BOSS_PROJECTILE_ROTATION = MATH_2_PI / GAME_TICKS;
var ENEMY_BOSS_PROJECTILE_OFFSET = -100;
;
// 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 = 200;
var PICKUP_WEAPON_RANGE = 200;
var PICKUP_XP_MEDIUM = 5;
var PICKUP_XP_LARGE = 10;
var PICKUP_XP_SPEED = 20;
var PICKUP_XP_COMBINE_RANGE = 150;
var PICKUP_XP_ACTIVATE_RANGE = 300;
;
//==============================================================================
// Instances & variables
//==============================================================================
;
// Variables
var id = 0;
var isPaused = false;
var movePosition;
var enemyCount = 0;
var minorBoonCount = 1;
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 enemySpawner = game.addChild(new EnemySpawner());
var backgroundContainer = game.addChild(new SortingContainer());
var midgroundContainer = game.addChild(new SortingContainer());
var foregroundContainer = game.addChild(new Container());
var interfaceContainer = game.addChild(new Container());
var hero = midgroundContainer.addChild(new Hero({
	x: GAME_WIDTH / 2,
	y: GAME_HEIGHT / 2,
	radius: 65
}));
/* 
backgroundContainer.addChild(new PickupWeapon({
	x: GAME_WIDTH / 4 * 2,
	y: GAME_HEIGHT / 4,
	scale: 1.25,
	graphics: 'weaponFireball',
	weaponClass: WeaponFireball
}));
*/
backgroundContainer.addChild(new PickupWeapon({
	x: GAME_WIDTH / 2 - WEAPON_OFFSET,
	y: GAME_HEIGHT / 2 + WEAPON_OFFSET * GAME_PERSPECTIVE,
	scale: 1.25,
	graphics: 'weaponCross',
	weaponClass: WeaponCross
}));
;
// Interface instances
var joystick = game.addChild(new Joystick({
	size: 400,
	x: GAME_WIDTH - 400,
	y: GAME_HEIGHT - 400
}));
var upgradeButton = interfaceContainer.addChild(new UiBoonUpgradeButton({
	x: GAME_WIDTH - 200,
	y: GAME_HEIGHT - 750,
	size: 200,
	callback: function callback() {
		if (minorBoonCount + majorBoonCount > 0) {
			showBoonSelection();
		}
	}
}));
var countdownTimer = interfaceContainer.addChild(new UiCountdownTimer({
	x: GAME_WIDTH / 2,
	y: 20,
	countdown: 300
}));
upgradeButton.setCount(minorBoonCount + majorBoonCount);
;
//==============================================================================
// Global events
//==============================================================================
;
// Add event listeners for the joystick
game.down = function (x, y) {
	if (!isPaused) {
		movePosition = {
			x: x,
			y: y
		};
	}
};
game.move = function (x, y, obj) {
	if (!isPaused) {
		if (!movePosition) {
			joystick.movement(x - joystick.x, y - joystick.y, obj);
		} else {
			movePosition = {
				x: x,
				y: y
			};
		}
	}
};
game.up = function (x, y, obj) {
	joystick.release(x, y, obj);
	movePosition = undefined;
};
;
//==============================================================================
// Global helper functions
//==============================================================================
;
function checkBounds(x, y, border) {
	return !(x < border || x > GAME_WIDTH - border || y < border || y > GAME_HEIGHT - border);
}
function showBoonSelection() {
	var boonSelection;
	if (minorBoonCount) {
		boonSelection = LK.gui.center.addChild(new UiBoonSelection({
			boons: minorBoonLevels,
			type: 'Minor',
			count: minorBoonCount,
			callback: function callback(boon) {
				minorBoonCount--;
				if (checkBoonActions(boon)) {
					minorBoonLevels[boon]++;
					upgradeButton.setCount(minorBoonCount + majorBoonCount);
				}
				showBoonSelection();
			}
		}));
	} else if (majorBoonCount) {
		boonSelection = LK.gui.center.addChild(new UiBoonSelection({
			boons: majorBoonLevels,
			type: 'Major',
			count: majorBoonCount,
			callback: function callback(boon) {
				majorBoonCount--;
				if (checkBoonActions(boon)) {
					majorBoonLevels[boon]++;
					upgradeButton.setCount(minorBoonCount + majorBoonCount);
				}
				showBoonSelection();
			}
		}));
	}
	isPaused = !!boonSelection;
	upgradeButton.setHidden(isPaused);
}
function checkBoonActions(boon) {
	switch (boon) {
		case BOON_HEALTH:
			hero.healthMax += HERO_HEALTH_BONUS;
			hero.healPercentage(0); // Update the health bar
			return true;
		case BOON_SPEED:
			hero.speed += HERO_SPEED_BONUS;
			return true;
		case BOON_MINOR_HEAL:
			hero.healPercentage(PICKUP_HEAL_MINOR);
			return false;
		case BOON_FULL_HEAL:
			hero.healPercentage(PICKUP_HEAL_MAJOR);
			return false;
	}
	return true;
}

===================================================================
--- original.js
+++ change.js
@@ -411,8 +411,10 @@
 	return self;
 });
 var ProjectileEnemy = GameInstance.expand(function (config) {
 	var self = GameInstance.call(this, config);
+	self.tags[TAG_ENEMY] = true;
+	self.tags[TAG_PROJECTILE] = true;
 	self.graphics = self.attachAsset('projectileEnemy', {
 		anchorX: 0.5,
 		anchorY: 0.5,
 		rotation: config.direction - MATH_QUARTER_PI