/**** 
* Classes
****/
// Hero class
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.createAsset('hero', 'Hero character', 0.5, 0.5);
	self.fireRateLevel = 0; // Initialize hero's fire rate level
	self.shoot = function () {
		// Shooting logic will be implemented in the game logic section
	};
	self.update = function () {
		// Update logic for the hero, if needed
	};
});
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('bullet', 'Hero Bullet', 0.5, 0.5);
	self.speed = -10;
	self.move = function () {
		self.y += self.speed;
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy character', 0.5, 0.5);
	self.speed = 2;
	self.move = function () {
		self.y += self.speed;
	};
});
// FrenzyButton class
var FrenzyButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('frenzyButton', 'Frenzy Mode Button', 0.5, 0.5);
	self.cooldown = false;
	self.activateFrenzy = function () {
		if (!self.cooldown) {
			game.frenzyMode = true;
			LK.setTimeout(function () {
				game.frenzyMode = false;
			}, 5000); // Frenzy mode lasts for 5 seconds
			self.cooldown = true;
			LK.setTimeout(function () {
				self.cooldown = false;
			}, 30000); // 30 second cooldown
		}
	};
	self.on('down', function () {
		self.activateFrenzy();
	});
});
// Coin class
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.createAsset('coin', 'Game Coin', 0.5, 0.5);
	self.value = 1; // Default value, can be increased by shop upgrades
	self.collect = function () {
		game.coins += self.value;
		coinTxt.setText(game.coins.toString()); // Update the coin display text
		self.destroy();
	};
	self.on('down', function () {
		self.collect();
	});
});
// FireRateUpgradeButton class
var FireRateUpgradeButton = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.createAsset('fireRateUpgradeButton', 'Fire Rate Upgrade Button', 0.5, 0.5);
	self.on('down', function () {
		if (game.coins >= 5) {
			game.coins -= 5;
			hero.fireRateLevel += 1;
			coinTxt.setText(game.coins.toString());
		}
	});
});

/**** 
* Initialize Game
****/
// Create fire rate upgrade button instance
// Create frenzy button instance
// Create frenzy button instance
var game = new LK.Game({
	backgroundColor: 0xFFFFFF,
	// Init game with white background
	frenzyMode: false
	// Track frenzy mode status
});

/**** 
* Game Code
****/
game.coins = 0; // Initialize coins as a number before creating coinTxt
// Initialize important asset arrays and score
var bullets = [];
var enemies = [];
var score = 0;
// Create score display
var scoreTxt = new Text2(score.toString(), {
	size: 150,
	fill: "#000000"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create coin display
var coinTxt = new Text2(game.coins.toString(), {
	size: 100,
	fill: "#ffd700"
});
coinTxt.anchor.set(0.5, 0);
coinTxt.y = scoreTxt.height + 20; // Position below the score display
LK.gui.top.addChild(coinTxt);
// Create hero instance
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 100; // Position hero near the bottom of the screen
// Game tick event
LK.on('tick', function () {
	// Move bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].move();
		if (bullets[i].y < 0) {
			bullets[i].destroy();
			bullets.splice(i, 1);
		}
	}
	// Move enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].move();
		if (enemies[j].y > 2732) {
			LK.showGameOver();
		}
	}
	// Check for bullet-enemy collisions
	for (var b = bullets.length - 1; b >= 0; b--) {
		for (var e = enemies.length - 1; e >= 0; e--) {
			if (bullets[b].intersects(enemies[e])) {
				// Increase score and update display
				score++;
				scoreTxt.setText(score.toString());
				bullets[b].destroy();
				bullets.splice(b, 1);
				enemies[e].destroy();
				enemies.splice(e, 1);
				break;
			}
		}
	}
	// Spawn coins
	if (LK.ticks % 300 == 0) {
		// Spawn a coin every 5 seconds
		var newCoin = new Coin();
		newCoin.x = Math.random() * 2048;
		newCoin.y = Math.random() * (2732 - 100);
		game.addChild(newCoin);
	}
	// Spawn enemies
	var enemySpawnRate = game.frenzyMode ? 60 : 120; // Increased spawn rate during frenzy
	if (LK.ticks % enemySpawnRate == 0) {
		var newEnemy = new Enemy();
		newEnemy.x = Math.random() * 2048;
		newEnemy.y = -50;
		enemies.push(newEnemy);
		game.addChild(newEnemy);
	}
	// Hero shooting
	var bulletSpawnRate = game.frenzyMode ? 15 : 30 - hero.fireRateLevel * 5; // Increased spawn rate during frenzy and further increased by hero's fire rate level
	if (LK.ticks % bulletSpawnRate == 0) {
		var newBullet = new Bullet();
		newBullet.x = hero.x;
		newBullet.y = hero.y;
		bullets.push(newBullet);
		game.addChild(newBullet);
	}
	// Update hero
	hero.update();
});
// Touch event to move hero
game.on('down', function (obj) {
	var pos = obj.event.getLocalPosition(game);
	hero.x = pos.x;
});
// Ensure the game is touchscreen compatible
game.on('move', function (obj) {
	if (obj.event.touches && obj.event.touches.length > 0) {
		var touch = obj.event.touches[0];
		var pos = touch.getLocalPosition(game);
		hero.x = pos.x;
	}
});
// Create frenzy button instance
var frenzyButton = game.addChild(new FrenzyButton());
frenzyButton.x = LK.gui.right.x - 100;
frenzyButton.y = LK.gui.bottom.y - 200;
// Create fire rate upgrade button instance
var fireRateUpgradeButton = game.addChild(new FireRateUpgradeButton());
fireRateUpgradeButton.x = LK.gui.right.x - 100;
fireRateUpgradeButton.y = LK.gui.bottom.y - 100;

===================================================================
--- original.js
+++ change.js
@@ -65,12 +65,25 @@
 	self.on('down', function () {
 		self.collect();
 	});
 });
+// FireRateUpgradeButton class
+var FireRateUpgradeButton = Container.expand(function () {
+	var self = Container.call(this);
+	var buttonGraphics = self.createAsset('fireRateUpgradeButton', 'Fire Rate Upgrade Button', 0.5, 0.5);
+	self.on('down', function () {
+		if (game.coins >= 5) {
+			game.coins -= 5;
+			hero.fireRateLevel += 1;
+			coinTxt.setText(game.coins.toString());
+		}
+	});
+});
 
 /**** 
 * Initialize Game
 ****/
+// Create fire rate upgrade button instance
 // Create frenzy button instance
 // Create frenzy button instance
 var game = new LK.Game({
 	backgroundColor: 0xFFFFFF,
@@ -182,5 +195,9 @@
 });
 // Create frenzy button instance
 var frenzyButton = game.addChild(new FrenzyButton());
 frenzyButton.x = LK.gui.right.x - 100;
-frenzyButton.y = LK.gui.bottom.y - 100;
\ No newline at end of file
+frenzyButton.y = LK.gui.bottom.y - 200;
+// Create fire rate upgrade button instance
+var fireRateUpgradeButton = game.addChild(new FireRateUpgradeButton());
+fireRateUpgradeButton.x = LK.gui.right.x - 100;
+fireRateUpgradeButton.y = LK.gui.bottom.y - 100;
\ No newline at end of file