===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,351 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Debris = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('debris', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+var Supply = Container.expand(function (type) {
+	var self = Container.call(this);
+	self.type = type;
+	var assetName = type;
+	var graphics = self.attachAsset(assetName, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.value = type === 'medicine' ? 25 : type === 'food' ? 15 : 3;
+	return self;
+});
+var Survivor = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('survivor', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 100;
+	self.ammoCount = 5;
+	self.speed = 3;
+	self.isMoving = false;
+	self.detectionRadius = 120;
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health < 0) self.health = 0;
+		LK.effects.flashObject(self, 0xff0000, 500);
+		LK.getSound('damage').play();
+	};
+	self.heal = function (amount) {
+		self.health += amount;
+		if (self.health > 100) self.health = 100;
+		LK.effects.flashObject(self, 0x00ff00, 300);
+	};
+	self.addAmmo = function (amount) {
+		self.ammoCount += amount;
+	};
+	self.shoot = function () {
+		if (self.ammoCount > 0) {
+			self.ammoCount--;
+			LK.getSound('shoot').play();
+			return true;
+		}
+		return false;
+	};
+	return self;
+});
+var Zombie = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('zombie', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1;
+	self.detectionRadius = 100;
+	self.isAlerted = false;
+	self.targetX = self.x;
+	self.targetY = self.y;
+	self.patrolDistance = 150;
+	self.originalX = 0;
+	self.originalY = 0;
+	self.patrolDirection = 1;
+	self.alert = function () {
+		if (!self.isAlerted) {
+			self.isAlerted = true;
+			self.speed = 2.5;
+			tween(graphics, {
+				tint: 0xff4444
+			}, {
+				duration: 300
+			});
+		}
+	};
+	self.update = function () {
+		if (self.isAlerted) {
+			// Chase player
+			var dx = survivor.x - self.x;
+			var dy = survivor.y - self.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance > 5) {
+				self.x += dx / distance * self.speed;
+				self.y += dy / distance * self.speed;
+			}
+		} else {
+			// Patrol behavior
+			var dx = self.targetX - self.x;
+			var dy = self.targetY - self.y;
+			var distance = Math.sqrt(dx * dx + dy * dy);
+			if (distance < 10) {
+				// Reached patrol point, set new target
+				self.targetX = self.originalX + (Math.random() - 0.5) * self.patrolDistance;
+				self.targetY = self.originalY + (Math.random() - 0.5) * self.patrolDistance;
+				// Keep within bounds
+				self.targetX = Math.max(100, Math.min(1948, self.targetX));
+				self.targetY = Math.max(300, Math.min(2432, self.targetY));
+			} else {
+				self.x += dx / distance * self.speed;
+				self.y += dy / distance * self.speed;
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2d3748
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var survivor;
+var zombies = [];
+var supplies = [];
+var debris = [];
+var dragNode = null;
+var gameTime = 0;
+var lastHealthDecrease = 0;
+var lastSupplySpawn = 0;
+var lastZombieSpawn = 0;
+var difficultyLevel = 1;
+// UI Elements
+var healthText = new Text2('Health: 100', {
+	size: 40,
+	fill: '#ff0000'
+});
+healthText.anchor.set(0, 0);
+LK.gui.topLeft.addChild(healthText);
+healthText.x = 120;
+healthText.y = 20;
+var ammoText = new Text2('Ammo: 5', {
+	size: 40,
+	fill: '#ffff00'
+});
+ammoText.anchor.set(0, 0);
+LK.gui.topLeft.addChild(ammoText);
+ammoText.x = 120;
+ammoText.y = 70;
+var scoreText = new Text2('Score: 0', {
+	size: 50,
+	fill: '#ffffff'
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+// Initialize survivor
+survivor = game.addChild(new Survivor());
+survivor.x = 1024;
+survivor.y = 2000;
+// Spawn initial debris
+for (var i = 0; i < 8; i++) {
+	var debrisItem = game.addChild(new Debris());
+	debrisItem.x = 200 + Math.random() * 1648;
+	debrisItem.y = 400 + Math.random() * 1800;
+	debris.push(debrisItem);
+}
+// Spawn initial zombies
+for (var i = 0; i < 3; i++) {
+	var zombie = game.addChild(new Zombie());
+	zombie.x = 300 + Math.random() * 1448;
+	zombie.y = 300 + Math.random() * 1500;
+	zombie.originalX = zombie.x;
+	zombie.originalY = zombie.y;
+	zombie.targetX = zombie.x;
+	zombie.targetY = zombie.y;
+	zombies.push(zombie);
+}
+// Spawn initial supplies
+for (var i = 0; i < 5; i++) {
+	spawnSupply();
+}
+function spawnSupply() {
+	var types = ['medicine', 'food', 'ammo'];
+	var type = types[Math.floor(Math.random() * types.length)];
+	var supply = game.addChild(new Supply(type));
+	// Spawn away from debris and zombies
+	var validPosition = false;
+	var attempts = 0;
+	while (!validPosition && attempts < 10) {
+		supply.x = 100 + Math.random() * 1848;
+		supply.y = 300 + Math.random() * 2132;
+		validPosition = true;
+		// Check distance from debris
+		for (var j = 0; j < debris.length; j++) {
+			var dist = Math.sqrt(Math.pow(supply.x - debris[j].x, 2) + Math.pow(supply.y - debris[j].y, 2));
+			if (dist < 80) {
+				validPosition = false;
+				break;
+			}
+		}
+		attempts++;
+	}
+	supplies.push(supply);
+}
+function spawnZombie() {
+	var zombie = game.addChild(new Zombie());
+	// Spawn at edges of screen
+	var side = Math.floor(Math.random() * 4);
+	if (side === 0) {
+		// top
+		zombie.x = Math.random() * 2048;
+		zombie.y = 200;
+	} else if (side === 1) {
+		// right
+		zombie.x = 1900;
+		zombie.y = Math.random() * 2732;
+	} else if (side === 2) {
+		// bottom
+		zombie.x = Math.random() * 2048;
+		zombie.y = 2500;
+	} else {
+		// left
+		zombie.x = 150;
+		zombie.y = Math.random() * 2732;
+	}
+	zombie.originalX = zombie.x;
+	zombie.originalY = zombie.y;
+	zombie.targetX = zombie.x;
+	zombie.targetY = zombie.y;
+	zombies.push(zombie);
+}
+function updateUI() {
+	healthText.setText('Health: ' + Math.floor(survivor.health));
+	ammoText.setText('Ammo: ' + survivor.ammoCount);
+	scoreText.setText('Score: ' + LK.getScore());
+}
+// Event handlers
+game.down = function (x, y, obj) {
+	dragNode = survivor;
+	survivor.isMoving = true;
+	// Check if clicking near zombie to shoot
+	var nearestZombie = null;
+	var nearestDistance = Infinity;
+	for (var i = 0; i < zombies.length; i++) {
+		var zombie = zombies[i];
+		var dist = Math.sqrt(Math.pow(x - zombie.x, 2) + Math.pow(y - zombie.y, 2));
+		if (dist < 100 && dist < nearestDistance) {
+			nearestDistance = dist;
+			nearestZombie = zombie;
+		}
+	}
+	if (nearestZombie && survivor.shoot()) {
+		// Remove zombie
+		var index = zombies.indexOf(nearestZombie);
+		if (index > -1) {
+			nearestZombie.destroy();
+			zombies.splice(index, 1);
+			LK.setScore(LK.getScore() + 50);
+		}
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+	survivor.isMoving = false;
+};
+game.move = function (x, y, obj) {
+	if (dragNode) {
+		// Keep survivor within bounds
+		dragNode.x = Math.max(50, Math.min(1998, x));
+		dragNode.y = Math.max(300, Math.min(2682, y));
+		survivor.isMoving = true;
+	}
+};
+game.update = function () {
+	gameTime += 16; // Approximately 16ms per frame at 60fps
+	// Health decreases over time
+	if (gameTime - lastHealthDecrease > 3000) {
+		// Every 3 seconds
+		survivor.health -= 2;
+		lastHealthDecrease = gameTime;
+	}
+	// Check game over
+	if (survivor.health <= 0) {
+		LK.showGameOver();
+		return;
+	}
+	// Spawn supplies
+	if (gameTime - lastSupplySpawn > 8000) {
+		// Every 8 seconds
+		spawnSupply();
+		lastSupplySpawn = gameTime;
+	}
+	// Spawn zombies (increasing difficulty)
+	difficultyLevel = Math.floor(gameTime / 30000) + 1; // Increase difficulty every 30 seconds
+	var zombieSpawnRate = Math.max(5000 - difficultyLevel * 500, 2000); // Faster spawning over time
+	if (gameTime - lastZombieSpawn > zombieSpawnRate) {
+		spawnZombie();
+		lastZombieSpawn = gameTime;
+	}
+	// Check zombie detection
+	for (var i = 0; i < zombies.length; i++) {
+		var zombie = zombies[i];
+		var dist = Math.sqrt(Math.pow(survivor.x - zombie.x, 2) + Math.pow(survivor.y - zombie.y, 2));
+		if (dist < zombie.detectionRadius) {
+			if (survivor.isMoving) {
+				// Fast movement alerts zombies
+				zombie.alert();
+			} else if (dist < 60) {
+				// Very close detection even when stationary
+				zombie.alert();
+			}
+		}
+		// Check collision with survivor
+		if (survivor.intersects(zombie)) {
+			survivor.takeDamage(10);
+		}
+	}
+	// Check supply collection
+	for (var i = supplies.length - 1; i >= 0; i--) {
+		var supply = supplies[i];
+		if (survivor.intersects(supply)) {
+			LK.getSound('collect').play();
+			if (supply.type === 'medicine') {
+				survivor.heal(supply.value);
+				LK.setScore(LK.getScore() + 20);
+			} else if (supply.type === 'food') {
+				survivor.heal(supply.value);
+				LK.setScore(LK.getScore() + 15);
+			} else if (supply.type === 'ammo') {
+				survivor.addAmmo(supply.value);
+				LK.setScore(LK.getScore() + 10);
+			}
+			supply.destroy();
+			supplies.splice(i, 1);
+		}
+	}
+	// Add score for survival time
+	if (LK.ticks % 60 === 0) {
+		// Every second
+		LK.setScore(LK.getScore() + 1);
+	}
+	updateUI();
+};
\ No newline at end of file