===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,241 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Meteor class: Falling enemy
+var Meteor = Container.expand(function () {
+	var self = Container.call(this);
+	var meteor = self.attachAsset('meteor', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Randomize speed and rotation
+	self.speed = 12 + Math.random() * meteorSpeedBoost;
+	self.rotationSpeed = (Math.random() - 0.5) * 0.08;
+	// For intersection tracking
+	self.lastIntersecting = false;
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += self.rotationSpeed;
+	};
+	return self;
+});
+// Projectile class: Player's bullet
+var Projectile = Container.expand(function () {
+	var self = Container.call(this);
+	var proj = self.attachAsset('projectile', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.speed = -38; // Upwards
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Turret class: Player's cannon at the bottom
+var Turret = Container.expand(function () {
+	var self = Container.call(this);
+	// Barrel
+	var barrel = self.attachAsset('turretBarrel', {
+		anchorX: 0.5,
+		anchorY: 1,
+		x: 0,
+		y: 0
+	});
+	// Base
+	var base = self.attachAsset('turretBase', {
+		anchorX: 0.5,
+		anchorY: 0,
+		x: 0,
+		y: 0
+	});
+	// For drag offset
+	self.dragOffsetX = 0;
+	// For firing cooldown
+	self.canShoot = true;
+	// Fire projectile
+	self.shoot = function () {
+		if (!self.canShoot) return;
+		self.canShoot = false;
+		// Cooldown (fast)
+		LK.setTimeout(function () {
+			self.canShoot = true;
+		}, 180);
+		var proj = new Projectile();
+		proj.x = self.x;
+		proj.y = self.y - barrel.height;
+		projectiles.push(proj);
+		game.addChild(proj);
+		LK.getSound('shoot').play();
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x0a2233
+});
+
+/**** 
+* Game Code
+****/ 
+// Sound effects
+// Explosion effect (for future use)
+// Earth: Ground at the bottom
+// Meteor: Falling enemy
+// Projectile: Player's bullet
+// Turret: Defense cannon at the bottom
+// Game variables
+var turret;
+var projectiles = [];
+var meteors = [];
+var earth;
+var scoreTxt;
+var livesTxt;
+var dragNode = null;
+var lastTouchX = 0;
+var lives = 5;
+var score = 0;
+var meteorSpawnInterval = 60; // frames
+var meteorSpeedBoost = 0; // increases as game progresses
+var meteorTimer = 0;
+// Add earth at the bottom
+earth = LK.getAsset('earth', {
+	anchorX: 0.5,
+	anchorY: 1,
+	x: 2048 / 2,
+	y: 2732
+});
+game.addChild(earth);
+// Add turret
+turret = new Turret();
+turret.x = 2048 / 2;
+turret.y = 2732 - earth.height + 20;
+game.addChild(turret);
+// Score text (top center)
+scoreTxt = new Text2('Score: 0', {
+	size: 100,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Lives text (top right, avoid top left 100x100)
+livesTxt = new Text2('Lives: 5', {
+	size: 80,
+	fill: 0xFFB300
+});
+livesTxt.anchor.set(1, 0);
+LK.gui.topRight.addChild(livesTxt);
+// Handle dragging turret horizontally
+game.down = function (x, y, obj) {
+	// Only allow drag if touch is on or near the turret
+	var local = game.toLocal({
+		x: x,
+		y: y
+	});
+	if (local.y > turret.y - 120 && local.y < turret.y + 80 && local.x > turret.x - 180 && local.x < turret.x + 180) {
+		dragNode = turret;
+		dragNode.dragOffsetX = local.x - turret.x;
+		lastTouchX = local.x;
+	}
+};
+game.move = function (x, y, obj) {
+	if (dragNode) {
+		var local = game.toLocal({
+			x: x,
+			y: y
+		});
+		var newX = local.x - dragNode.dragOffsetX;
+		// Clamp within screen
+		var minX = 110 + 60; // avoid left edge
+		var maxX = 2048 - 60;
+		dragNode.x = Math.max(minX, Math.min(maxX, newX));
+		lastTouchX = local.x;
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// Tap to shoot (anywhere on screen)
+game.tap = function (x, y, obj) {
+	turret.shoot();
+};
+// For touch devices, treat 'down' as tap if not dragging
+game.down = function (origDown) {
+	return function (x, y, obj) {
+		origDown(x, y, obj);
+		// If not dragging, treat as tap
+		if (!dragNode) {
+			turret.shoot();
+		}
+	};
+}(game.down);
+// Main update loop
+game.update = function () {
+	// Spawn meteors
+	meteorTimer++;
+	var spawnRate = Math.max(18, meteorSpawnInterval - Math.floor(score / 10) * 4);
+	if (meteorTimer >= spawnRate) {
+		meteorTimer = 0;
+		var m = new Meteor();
+		// Random X, avoid edges
+		m.x = 120 + Math.random() * (2048 - 240);
+		m.y = -80;
+		meteors.push(m);
+		game.addChild(m);
+	}
+	// Increase difficulty
+	meteorSpeedBoost = Math.min(18, Math.floor(score / 8) * 2);
+	// Update projectiles
+	for (var i = projectiles.length - 1; i >= 0; i--) {
+		var p = projectiles[i];
+		p.update();
+		// Remove if off screen
+		if (p.y < -100) {
+			p.destroy();
+			projectiles.splice(i, 1);
+			continue;
+		}
+		// Check collision with meteors
+		for (var j = meteors.length - 1; j >= 0; j--) {
+			var m = meteors[j];
+			if (p.intersects(m)) {
+				// Destroy both
+				LK.getSound('hit').play();
+				p.destroy();
+				m.destroy();
+				projectiles.splice(i, 1);
+				meteors.splice(j, 1);
+				score += 1;
+				scoreTxt.setText('Score: ' + score);
+				break;
+			}
+		}
+	}
+	// Update meteors
+	for (var k = meteors.length - 1; k >= 0; k--) {
+		var mtr = meteors[k];
+		mtr.update();
+		// If meteor hits earth
+		if (mtr.y + 60 >= earth.y - earth.height / 2) {
+			LK.getSound('lose').play();
+			mtr.destroy();
+			meteors.splice(k, 1);
+			lives -= 1;
+			livesTxt.setText('Lives: ' + lives);
+			// Flash screen
+			LK.effects.flashScreen(0xff0000, 400);
+			if (lives <= 0) {
+				LK.showGameOver();
+				return;
+			}
+		}
+	}
+};
\ No newline at end of file