===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,469 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Base = Container.expand(function (isPlayer) {
+	var self = Container.call(this);
+	self.isPlayer = isPlayer;
+	self.age = 0;
+	self.maxHp = 1000;
+	self.hp = self.maxHp;
+	self.turretCooldown = 0;
+	var assetNames = isPlayer ? ['playerBaseStone', 'playerBaseMedieval', 'playerBaseModern', 'playerBaseFuture'] : ['enemyBaseStone', 'enemyBaseMedieval', 'enemyBaseModern', 'enemyBaseFuture'];
+	self.baseGraphics = self.attachAsset(assetNames[self.age], {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.turret = self.addChild(LK.getAsset(isPlayer ? 'playerTurret' : 'enemyTurret', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	}));
+	self.turret.x = 0;
+	self.turret.y = -200;
+	self.update = function () {
+		if (self.turretCooldown > 0) {
+			self.turretCooldown--;
+		}
+	};
+	self.takeDamage = function (damage) {
+		self.hp -= damage;
+		LK.effects.flashObject(self, 0xFF0000, 300);
+		LK.getSound('baseHit').play();
+		if (self.hp <= 0) {
+			return true;
+		}
+		return false;
+	};
+	self.upgradeAge = function () {
+		if (self.age < 3) {
+			self.age++;
+			self.removeChild(self.baseGraphics);
+			var assetNames = self.isPlayer ? ['playerBaseStone', 'playerBaseMedieval', 'playerBaseModern', 'playerBaseFuture'] : ['enemyBaseStone', 'enemyBaseMedieval', 'enemyBaseModern', 'enemyBaseFuture'];
+			self.baseGraphics = self.attachAsset(assetNames[self.age], {
+				anchorX: 0.5,
+				anchorY: 1.0
+			});
+		}
+	};
+	self.shootTurret = function (targets) {
+		if (self.turretCooldown <= 0 && targets.length > 0) {
+			var target = targets[0];
+			var bullet = new Bullet(self.isPlayer, self.x, self.y - 200, target);
+			bullets.push(bullet);
+			game.addChild(bullet);
+			self.turretCooldown = 30;
+		}
+	};
+	return self;
+});
+var Bullet = Container.expand(function (isPlayer, startX, startY, target) {
+	var self = Container.call(this);
+	self.isPlayer = isPlayer;
+	self.target = target;
+	self.speed = 8;
+	self.damage = 30;
+	var bulletGraphics = self.attachAsset(isPlayer ? 'playerBullet' : 'enemyBullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.x = startX;
+	self.y = startY;
+	// Calculate direction to target
+	var dx = target.x - startX;
+	var dy = target.y - startY;
+	var distance = Math.sqrt(dx * dx + dy * dy);
+	self.velocityX = dx / distance * self.speed;
+	self.velocityY = dy / distance * self.speed;
+	self.update = function () {
+		self.x += self.velocityX;
+		self.y += self.velocityY;
+	};
+	return self;
+});
+var EnemyUnit = Container.expand(function (age) {
+	var self = Container.call(this);
+	self.age = age || 0;
+	self.hp = (self.age + 1) * 50;
+	self.maxHp = self.hp;
+	self.damage = (self.age + 1) * 25;
+	self.speed = -2;
+	self.attackCooldown = 0;
+	self.target = null;
+	var assetNames = ['enemyUnitStone', 'enemyUnitMedieval', 'enemyUnitModern', 'enemyUnitFuture'];
+	var unitGraphics = self.attachAsset(assetNames[self.age], {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.update = function () {
+		if (self.attackCooldown > 0) {
+			self.attackCooldown--;
+		}
+		// Move towards player base
+		if (!self.target) {
+			self.x += self.speed;
+		}
+	};
+	self.takeDamage = function (damage) {
+		self.hp -= damage;
+		LK.effects.flashObject(self, 0xFF0000, 200);
+		if (self.hp <= 0) {
+			return true;
+		}
+		return false;
+	};
+	self.attack = function (target) {
+		if (self.attackCooldown <= 0) {
+			self.attackCooldown = 60;
+			return self.damage;
+		}
+		return 0;
+	};
+	return self;
+});
+var PlayerUnit = Container.expand(function (age) {
+	var self = Container.call(this);
+	self.age = age || 0;
+	self.hp = (self.age + 1) * 50;
+	self.maxHp = self.hp;
+	self.damage = (self.age + 1) * 25;
+	self.speed = 2;
+	self.attackCooldown = 0;
+	self.target = null;
+	var assetNames = ['playerUnitStone', 'playerUnitMedieval', 'playerUnitModern', 'playerUnitFuture'];
+	var unitGraphics = self.attachAsset(assetNames[self.age], {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.update = function () {
+		if (self.attackCooldown > 0) {
+			self.attackCooldown--;
+		}
+		// Move towards enemy base
+		if (!self.target) {
+			self.x += self.speed;
+		}
+	};
+	self.takeDamage = function (damage) {
+		self.hp -= damage;
+		LK.effects.flashObject(self, 0xFF0000, 200);
+		if (self.hp <= 0) {
+			return true;
+		}
+		return false;
+	};
+	self.attack = function (target) {
+		if (self.attackCooldown <= 0) {
+			self.attackCooldown = 60;
+			return self.damage;
+		}
+		return 0;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+// Sound assets
+// Turret assets
+// Bullet assets
+// Enemy unit assets for different ages
+// Player unit assets for different ages
+// Enemy base assets for different ages
+// Player base assets for different ages
+// Game state variables
+var playerGold = 100;
+var playerAge = 0;
+var enemyAge = 0;
+var gameSpeed = 1;
+// Game objects arrays
+var playerUnits = [];
+var enemyUnits = [];
+var bullets = [];
+// Age costs and unit costs
+var ageCosts = [0, 200, 500, 1000];
+var unitCosts = [50, 100, 200, 400];
+// Create bases
+var playerBase = game.addChild(new Base(true));
+playerBase.x = 200;
+playerBase.y = 2400;
+var enemyBase = game.addChild(new Base(false));
+enemyBase.x = 1848;
+enemyBase.y = 2400;
+// Create ground
+var ground = game.addChild(LK.getAsset({
+	anchorX: 0,
+	anchorY: 0
+}, {}));
+ground.x = 0;
+ground.y = 2400;
+// UI Elements
+var goldText = new Text2('Gold: ' + playerGold, {
+	size: 60,
+	fill: 0xFFD700
+});
+goldText.anchor.set(0, 0);
+LK.gui.topLeft.addChild(goldText);
+goldText.x = 120;
+goldText.y = 20;
+var playerHpText = new Text2('Player HP: ' + playerBase.hp, {
+	size: 50,
+	fill: 0x00FF00
+});
+playerHpText.anchor.set(0, 0);
+LK.gui.top.addChild(playerHpText);
+playerHpText.x = -200;
+playerHpText.y = 20;
+var enemyHpText = new Text2('Enemy HP: ' + enemyBase.hp, {
+	size: 50,
+	fill: 0xFF0000
+});
+enemyHpText.anchor.set(0, 0);
+LK.gui.top.addChild(enemyHpText);
+enemyHpText.x = 200;
+enemyHpText.y = 20;
+// Spawn unit button
+var spawnButton = LK.gui.bottomLeft.addChild(LK.getAsset({
+	anchorX: 0.5,
+	anchorY: 0.5
+}, {}));
+spawnButton.x = 150;
+spawnButton.y = -80;
+var spawnBtnText = new Text2('Spawn Unit\n' + unitCosts[playerAge] + ' Gold', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+spawnBtnText.anchor.set(0.5, 0.5);
+spawnButton.addChild(spawnBtnText);
+// Age upgrade button
+var upgradeButton = LK.gui.bottomRight.addChild(LK.getAsset({
+	anchorX: 0.5,
+	anchorY: 0.5
+}, {}));
+upgradeButton.x = -150;
+upgradeButton.y = -80;
+var upgradeBtnText = new Text2('Upgrade Age\n' + (playerAge < 3 ? ageCosts[playerAge + 1] + ' Gold' : 'Max Age'), {
+	size: 30,
+	fill: 0xFFFFFF
+});
+upgradeBtnText.anchor.set(0.5, 0.5);
+upgradeButton.addChild(upgradeBtnText);
+// Age display
+var ageNames = ['Stone Age', 'Medieval', 'Modern', 'Future'];
+var ageText = new Text2('Age: ' + ageNames[playerAge], {
+	size: 50,
+	fill: 0xFFFFFF
+});
+ageText.anchor.set(0.5, 0);
+LK.gui.top.addChild(ageText);
+ageText.y = 80;
+// Timers for spawning
+var playerSpawnTimer = 0;
+var enemySpawnTimer = 0;
+// Touch handlers
+spawnButton.down = function (x, y, obj) {
+	if (playerGold >= unitCosts[playerAge]) {
+		spawnPlayerUnit();
+	}
+};
+upgradeButton.down = function (x, y, obj) {
+	if (playerAge < 3 && playerGold >= ageCosts[playerAge + 1]) {
+		upgradePlayerAge();
+	}
+};
+// Game functions
+function spawnPlayerUnit() {
+	if (playerGold >= unitCosts[playerAge]) {
+		playerGold -= unitCosts[playerAge];
+		var unit = new PlayerUnit(playerAge);
+		unit.x = 300;
+		unit.y = 2400;
+		playerUnits.push(unit);
+		game.addChild(unit);
+		LK.getSound('unitSpawn').play();
+		updateUI();
+	}
+}
+function spawnEnemyUnit() {
+	var unit = new EnemyUnit(enemyAge);
+	unit.x = 1748;
+	unit.y = 2400;
+	enemyUnits.push(unit);
+	game.addChild(unit);
+}
+function upgradePlayerAge() {
+	if (playerAge < 3 && playerGold >= ageCosts[playerAge + 1]) {
+		playerGold -= ageCosts[playerAge + 1];
+		playerAge++;
+		playerBase.upgradeAge();
+		LK.getSound('upgrade').play();
+		updateUI();
+	}
+}
+function upgradeEnemyAge() {
+	if (enemyAge < 3) {
+		enemyAge++;
+		enemyBase.upgradeAge();
+	}
+}
+function updateUI() {
+	goldText.setText('Gold: ' + playerGold);
+	playerHpText.setText('Player HP: ' + Math.max(0, playerBase.hp));
+	enemyHpText.setText('Enemy HP: ' + Math.max(0, enemyBase.hp));
+	spawnBtnText.setText('Spawn Unit\n' + unitCosts[playerAge] + ' Gold');
+	upgradeBtnText.setText(playerAge < 3 ? 'Upgrade Age\n' + ageCosts[playerAge + 1] + ' Gold' : 'Max Age');
+	ageText.setText('Age: ' + ageNames[playerAge]);
+}
+// Main game update
+game.update = function () {
+	// Auto-spawn units
+	playerSpawnTimer++;
+	enemySpawnTimer++;
+	if (playerSpawnTimer >= 180) {
+		if (playerGold >= unitCosts[playerAge]) {
+			spawnPlayerUnit();
+		}
+		playerSpawnTimer = 0;
+	}
+	if (enemySpawnTimer >= 200) {
+		spawnEnemyUnit();
+		enemySpawnTimer = 0;
+	}
+	// Auto-upgrade enemy age
+	if (LK.ticks % 1800 == 0 && enemyAge < 3) {
+		upgradeEnemyAge();
+	}
+	// Update bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var bullet = bullets[i];
+		if (bullet.target && bullet.target.parent) {
+			// Check collision with target
+			if (bullet.intersects(bullet.target)) {
+				var died = bullet.target.takeDamage(bullet.damage);
+				if (died) {
+					if (bullet.target.isPlayer !== undefined) {
+						// It's a unit
+						if (!bullet.target.isPlayer) {
+							playerGold += 25;
+						}
+						var unitArray = bullet.target.isPlayer ? playerUnits : enemyUnits;
+						var unitIndex = unitArray.indexOf(bullet.target);
+						if (unitIndex > -1) {
+							unitArray.splice(unitIndex, 1);
+						}
+						bullet.target.destroy();
+					}
+				}
+				bullet.destroy();
+				bullets.splice(i, 1);
+				continue;
+			}
+		}
+		// Remove bullets that go off screen
+		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
+			bullet.destroy();
+			bullets.splice(i, 1);
+		}
+	}
+	// Update player units
+	for (var i = playerUnits.length - 1; i >= 0; i--) {
+		var unit = playerUnits[i];
+		// Check if unit reached enemy base
+		if (unit.x >= 1700) {
+			var died = enemyBase.takeDamage(unit.damage);
+			unit.destroy();
+			playerUnits.splice(i, 1);
+			if (died) {
+				LK.showYouWin();
+				return;
+			}
+			continue;
+		}
+		// Check combat with enemy units
+		var inCombat = false;
+		for (var j = 0; j < enemyUnits.length; j++) {
+			var enemy = enemyUnits[j];
+			var distance = Math.abs(unit.x - enemy.x);
+			if (distance < 80) {
+				inCombat = true;
+				var damage = unit.attack(enemy);
+				if (damage > 0) {
+					var enemyDied = enemy.takeDamage(damage);
+					LK.getSound('combat').play();
+					if (enemyDied) {
+						playerGold += 25;
+						enemy.destroy();
+						enemyUnits.splice(j, 1);
+						j--;
+					}
+				}
+				break;
+			}
+		}
+		if (!inCombat) {
+			unit.target = null;
+		}
+	}
+	// Update enemy units
+	for (var i = enemyUnits.length - 1; i >= 0; i--) {
+		var unit = enemyUnits[i];
+		// Check if unit reached player base
+		if (unit.x <= 348) {
+			var died = playerBase.takeDamage(unit.damage);
+			unit.destroy();
+			enemyUnits.splice(i, 1);
+			if (died) {
+				LK.showGameOver();
+				return;
+			}
+			continue;
+		}
+		// Check combat with player units
+		var inCombat = false;
+		for (var j = 0; j < playerUnits.length; j++) {
+			var player = playerUnits[j];
+			var distance = Math.abs(unit.x - player.x);
+			if (distance < 80) {
+				inCombat = true;
+				var damage = unit.attack(player);
+				if (damage > 0) {
+					var playerDied = player.takeDamage(damage);
+					if (playerDied) {
+						player.destroy();
+						playerUnits.splice(j, 1);
+						j--;
+					}
+				}
+				break;
+			}
+		}
+		if (!inCombat) {
+			unit.target = null;
+		}
+	}
+	// Base turret shooting
+	if (playerUnits.length > 0) {
+		var nearbyEnemies = enemyUnits.filter(function (unit) {
+			return unit.x > 1400;
+		});
+		enemyBase.shootTurret(nearbyEnemies);
+	}
+	if (enemyUnits.length > 0) {
+		var nearbyPlayers = playerUnits.filter(function (unit) {
+			return unit.x < 648;
+		});
+		playerBase.shootTurret(nearbyPlayers);
+	}
+	updateUI();
+};
\ No newline at end of file