/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
// Arrow class (player projectile)
var Arrow = Container.expand(function () {
	var self = Container.call(this);
	var arrowSprite = self.attachAsset('arrow', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -32; // Upwards
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Dragon class (enemy)
var Dragon = Container.expand(function () {
	var self = Container.call(this);
	var dragonSprite = self.attachAsset('dragon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.direction = 1; // 1: right, -1: left
	self.speed = 10;
	self.attackCooldown = 0;
	self.defeated = false;
	self.fallVy = 0;
	self.spinSpeed = 0;
	self.update = function () {
		if (self.defeated) {
			// Spinning fall animation
			self.y += self.fallVy;
			self.fallVy += 2.2; // gravity
			dragonSprite.rotation += self.spinSpeed;
			// Remove dragon if off screen
			if (self.y > 2732 + 300) {
				self.destroy();
			}
			return;
		}
		// Move left/right
		self.x += self.speed * self.direction;
		// Bounce at screen edges
		if (self.x < 160) {
			self.x = 160;
			self.direction = 1;
		}
		if (self.x > 2048 - 160) {
			self.x = 2048 - 160;
			self.direction = -1;
		}
		// Attack cooldown
		if (self.attackCooldown > 0) {
			self.attackCooldown--;
		}
	};
	// Dragon fires a fireball
	self.shoot = function () {
		if (self.defeated) return;
		if (self.attackCooldown === 0) {
			// Fire multiple fireballs in a spread, each targeting the fortress position
			var numFireballs = 3 + Math.floor(LK.getScore() / 10); // Increase number as score increases
			if (numFireballs > 5) numFireballs = 5;
			var spread = 220; // wider spread for more fireballs
			var startX = self.x - (numFireballs - 1) * spread / 2;
			for (var i = 0; i < numFireballs; i++) {
				var fireball = new Fireball();
				fireball.x = startX + i * spread;
				fireball.y = self.y + 90;
				fireball.lastY = fireball.y;
				fireball.lastIntersecting = false;
				// Calculate direction vector from fireball to fortress at fire time
				var dx = fortress.x - fireball.x;
				var dy = fortress.y - 60 - fireball.y; // aim slightly above fortress center
				var dist = Math.sqrt(dx * dx + dy * dy);
				if (dist === 0) {
					fireball.vx = 0;
					fireball.vy = fireball.speed;
				} else {
					// Add a slight angle offset for spread effect
					var angleOffset = (i - (numFireballs - 1) / 2) * (Math.PI / 18); // up to +/-10deg
					var baseAngle = Math.atan2(dy, dx);
					var angle = baseAngle + angleOffset;
					fireball.vx = Math.cos(angle) * fireball.speed;
					fireball.vy = Math.sin(angle) * fireball.speed;
				}
				fireballs.push(fireball);
				game.addChild(fireball);
			}
			LK.getSound('fireball_shoot').play();
			self.attackCooldown = Math.max(30, 120 - Math.floor(LK.getScore() / 5) * 10); // Faster as score increases
		}
	};
	// Defeat animation trigger
	self.defeat = function () {
		if (self.defeated) return;
		self.defeated = true;
		self.fallVy = 18;
		self.spinSpeed = 0.28 + Math.random() * 0.15;
		// Optionally flash or play effect here
		LK.effects.flashObject(self, 0xFF6600, 600);
	};
	return self;
});
// Fireball class (enemy projectile)
var Fireball = Container.expand(function () {
	var self = Container.call(this);
	var fireballSprite = self.attachAsset('fireball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 18;
	self.update = function () {
		// If vx/vy are set, use them (targeted), else default straight down
		if (typeof self.vx === "number" && typeof self.vy === "number") {
			self.x += self.vx;
			self.y += self.vy;
		} else {
			self.y += self.speed;
		}
	};
	return self;
});
// Fortress class (player)
var Fortress = Container.expand(function () {
	var self = Container.call(this);
	var fortressSprite = self.attachAsset('fortress', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x0080ff
});

/**** 
* Game Code
****/ 
// Game variables
// Fortress (player) at the bottom
// Arrow (player projectile)
// Shield (player deployable)
// Dragon (enemy)
// Fireball (enemy projectile)
// Fortress health bar
// Sound effects
// Music
var arrows = [];
var fireballs = [];
var shields = [];
var fortressHealth = 5;
var fortressMaxHealth = 5;
var canShoot = true;
var shootCooldown = 0;
var canShield = true;
var shieldCooldown = 0;
var dragNode = null;
var lastFortressX = 0;
// Add music
LK.playMusic('castle_theme');
// Add background image behind all gameplay elements
var background = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	width: 2048,
	height: 2732
});
game.addChild(background);
// Add fortress (player) at bottom center
var fortress = new Fortress();
fortress.x = 2048 / 2;
fortress.y = 2732 - 120;
game.addChild(fortress);
// Add dragon at top center
var dragon = new Dragon();
dragon.x = 2048 / 2;
dragon.y = 220;
game.addChild(dragon);
// (Health bar removed)
// Score text
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Fortress health text
var healthTxt = new Text2('♥♥♥♥♥', {
	size: 90,
	fill: 0x44DD44
});
healthTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(healthTxt);
healthTxt.y = 120;
healthTxt.x = 2048 / 2 / (2048 / LK.gui.top.width);
// Helper: update health bar and text
function updateHealthDisplay() {
	// (Health bar width update removed)
	// Health text
	var hearts = '';
	for (var i = 0; i < fortressHealth; i++) hearts += '♥';
	for (var i = fortressHealth; i < fortressMaxHealth; i++) hearts += '♡';
	healthTxt.setText(hearts);
	if (fortressHealth <= 2) {
		healthTxt.setStyle({
			fill: 0xFF4444
		});
	} else {
		healthTxt.setStyle({
			fill: 0x44DD44
		});
	}
}
// Initial health display
updateHealthDisplay();
// Touch/mouse controls
game.down = function (x, y, obj) {
	// If touch is in lower 1/3, drag fortress
	if (y > 2732 * 2 / 3) {
		dragNode = fortress;
		lastFortressX = fortress.x;
	} else if (y <= 2732 * 2 / 3 && canShoot && shootCooldown === 0) {
		// Shoot arrow if tap is in upper 2/3
		var arrow = new Arrow();
		arrow.x = fortress.x;
		arrow.y = fortress.y - 80;
		arrow.lastY = arrow.y;
		arrow.lastIntersecting = false;
		arrows.push(arrow);
		game.addChild(arrow);
		LK.getSound('arrow_shoot').play();
		canShoot = false;
		shootCooldown = 12; // 0.2s
	}
};
game.move = function (x, y, obj) {
	if (dragNode === fortress) {
		// Move fortress horizontally, clamp to screen
		fortress.x = Math.max(160, Math.min(2048 - 160, x));
		// Move shield with fortress
		for (var i = 0; i < shields.length; i++) {
			shields[i].x = fortress.x;
		}
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main game update loop
game.update = function () {
	// Cooldowns
	if (!canShoot) {
		shootCooldown--;
		if (shootCooldown <= 0) {
			canShoot = true;
			shootCooldown = 0;
		}
	}
	if (!canShield) {
		shieldCooldown--;
		if (shieldCooldown <= 0) {
			canShield = true;
			shieldCooldown = 0;
		}
	}
	// Update dragon
	dragon.update();
	// Dragon attacks
	if (LK.ticks % Math.max(60, 180 - Math.floor(LK.getScore() / 5) * 10) === 0) {
		dragon.shoot();
	}
	// Update arrows
	for (var i = arrows.length - 1; i >= 0; i--) {
		var arrow = arrows[i];
		arrow.update();
		// Remove if off screen
		if (arrow.y < -100) {
			arrow.destroy();
			arrows.splice(i, 1);
			continue;
		}
		// Hit dragon?
		var hitDragon = arrow.intersects(dragon);
		if (!arrow.lastIntersecting && hitDragon) {
			// Score up
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			// If this is the defeat shot (win condition), trigger dragon defeat
			if (LK.getScore() >= 30) {
				if (typeof dragon.defeat === "function") {
					dragon.defeat();
				}
			} else {
				// Flash dragon
				LK.effects.flashObject(dragon, 0xFFFF00, 300);
			}
			arrow.destroy();
			arrows.splice(i, 1);
			continue;
		}
		arrow.lastIntersecting = hitDragon;
	}
	// Update fireballs
	for (var j = fireballs.length - 1; j >= 0; j--) {
		var fireball = fireballs[j];
		fireball.update();
		// Remove if off screen
		if (fireball.y > 2732 + 100) {
			fireball.destroy();
			fireballs.splice(j, 1);
			continue;
		}
		// Hit fortress?
		var hitFortress = fireball.intersects(fortress);
		if (!fireball.lastIntersecting && hitFortress) {
			fortressHealth--;
			updateHealthDisplay();
			LK.effects.flashObject(fortress, 0xFF0000, 400);
			LK.getSound('fortress_hit').play();
			fireball.destroy();
			fireballs.splice(j, 1);
			if (fortressHealth <= 0) {
				LK.effects.flashScreen(0xFF0000, 1000);
				LK.showGameOver();
				return;
			}
			continue;
		}
		fireball.lastIntersecting = hitFortress;
	}
	// Win condition: survive to score 30
	if (LK.getScore() >= 30) {
		LK.showYouWin();
		return;
	}
};
// Initial score
scoreTxt.setText(LK.getScore());

===================================================================
--- original.js
+++ change.js
@@ -136,24 +136,8 @@
 	});
 	self.update = function () {};
 	return self;
 });
-// Shield class (player deployable)
-var Shield = Container.expand(function () {
-	var self = Container.call(this);
-	var shieldSprite = self.attachAsset('shield', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.duration = 60; // frames
-	self.update = function () {
-		self.duration--;
-		if (self.duration <= 0) {
-			self.destroy();
-		}
-	};
-	return self;
-});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -248,19 +232,8 @@
 	// If touch is in lower 1/3, drag fortress
 	if (y > 2732 * 2 / 3) {
 		dragNode = fortress;
 		lastFortressX = fortress.x;
-		// Deploy shield if available and not on cooldown (secondary tap in lower 1/3)
-		if (canShield && shieldCooldown === 0) {
-			var shield = new Shield();
-			shield.x = fortress.x;
-			shield.y = fortress.y - 100;
-			shields.push(shield);
-			game.addChild(shield);
-			LK.getSound('shield_block').play();
-			canShield = false;
-			shieldCooldown = 90; // 1.5s
-		}
 	} else if (y <= 2732 * 2 / 3 && canShoot && shootCooldown === 0) {
 		// Shoot arrow if tap is in upper 2/3
 		var arrow = new Arrow();
 		arrow.x = fortress.x;
@@ -350,21 +323,8 @@
 			fireball.destroy();
 			fireballs.splice(j, 1);
 			continue;
 		}
-		// Hit shield?
-		var blocked = false;
-		for (var s = shields.length - 1; s >= 0; s--) {
-			var shield = shields[s];
-			if (fireball.intersects(shield)) {
-				LK.effects.flashObject(shield, 0x99FFFF, 200);
-				fireball.destroy();
-				fireballs.splice(j, 1);
-				blocked = true;
-				break;
-			}
-		}
-		if (blocked) continue;
 		// Hit fortress?
 		var hitFortress = fireball.intersects(fortress);
 		if (!fireball.lastIntersecting && hitFortress) {
 			fortressHealth--;
@@ -381,17 +341,8 @@
 			continue;
 		}
 		fireball.lastIntersecting = hitFortress;
 	}
-	// Update shields
-	for (var k = shields.length - 1; k >= 0; k--) {
-		var shield = shields[k];
-		shield.update();
-		if (shield.duration <= 0) {
-			shield.destroy();
-			shields.splice(k, 1);
-		}
-	}
 	// Win condition: survive to score 30
 	if (LK.getScore() >= 30) {
 		LK.showYouWin();
 		return;