===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,240 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Entity = Container.expand(function () {
+	var self = Container.call(this);
+	var entityGraphics = self.attachAsset('entity', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 2;
+	self.direction = Math.random() * Math.PI * 2;
+	self.detectionRange = 200;
+	self.chaseSpeed = 3;
+	self.isChasing = false;
+	self.lastDirectionChange = 0;
+	self.update = function () {
+		if (LK.ticks - self.lastDirectionChange > 120) {
+			self.direction += (Math.random() - 0.5) * 0.5;
+			self.lastDirectionChange = LK.ticks;
+		}
+		var distanceToHenry = Math.sqrt(Math.pow(henry.x - self.x, 2) + Math.pow(henry.y - self.y, 2));
+		if (distanceToHenry < self.detectionRange) {
+			self.isChasing = true;
+			var angleToHenry = Math.atan2(henry.y - self.y, henry.x - self.x);
+			self.direction = angleToHenry;
+		} else if (distanceToHenry > self.detectionRange * 2) {
+			self.isChasing = false;
+		}
+		var currentSpeed = self.isChasing ? self.chaseSpeed : self.speed;
+		var newX = self.x + Math.cos(self.direction) * currentSpeed;
+		var newY = self.y + Math.sin(self.direction) * currentSpeed;
+		if (isValidPosition(newX, newY)) {
+			self.x = newX;
+			self.y = newY;
+		} else {
+			self.direction += Math.PI;
+		}
+		if (self.isChasing && Math.random() < 0.02) {
+			LK.getSound('entity_sound').play();
+		}
+	};
+	return self;
+});
+var Henry = Container.expand(function () {
+	var self = Container.call(this);
+	var body = self.attachAsset('henry', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	self.speed = 4;
+	self.isMoving = false;
+	self.targetX = 0;
+	self.targetY = 0;
+	self.sanity = 100;
+	self.moveTo = function (x, y) {
+		if (self.isMoving) return;
+		var gridX = Math.floor(x / GRID_SIZE) * GRID_SIZE + GRID_SIZE / 2;
+		var gridY = Math.floor(y / GRID_SIZE) * GRID_SIZE + GRID_SIZE;
+		if (!isValidPosition(gridX, gridY)) return;
+		self.targetX = gridX;
+		self.targetY = gridY;
+		self.isMoving = true;
+		LK.getSound('footstep').play();
+		var distance = Math.sqrt(Math.pow(gridX - self.x, 2) + Math.pow(gridY - self.y, 2));
+		var duration = distance / self.speed * 16.67;
+		tween(self, {
+			x: gridX,
+			y: gridY
+		}, {
+			duration: duration,
+			easing: tween.linear,
+			onFinish: function onFinish() {
+				self.isMoving = false;
+				checkCollisions();
+			}
+		});
+	};
+	self.decreaseSanity = function (amount) {
+		self.sanity = Math.max(0, self.sanity - amount);
+		if (self.sanity <= 0) {
+			LK.showGameOver();
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0xFFFF99
+});
+
+/**** 
+* Game Code
+****/ 
+var GRID_SIZE = 100;
+var ROOM_WIDTH = 20;
+var ROOM_HEIGHT = 27;
+var levelLayout = [[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], [1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 1], [1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1], [1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], [1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1], [1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1], [1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1], [1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1], [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]];
+var walls = [];
+var floors = [];
+var entities = [];
+var henry;
+var exitDoor;
+var level = 1;
+var sanityText = new Text2('Sanity: 100', {
+	size: 80,
+	fill: 0x000000
+});
+sanityText.anchor.set(1, 0);
+LK.gui.topRight.addChild(sanityText);
+var levelText = new Text2('Level: 1', {
+	size: 80,
+	fill: 0x000000
+});
+levelText.anchor.set(0, 0);
+LK.gui.top.addChild(levelText);
+function initializeLevel() {
+	walls = [];
+	floors = [];
+	entities = [];
+	for (var y = 0; y < ROOM_HEIGHT; y++) {
+		for (var x = 0; x < ROOM_WIDTH; x++) {
+			var cellType = levelLayout[y][x];
+			var posX = x * GRID_SIZE + GRID_SIZE / 2;
+			var posY = y * GRID_SIZE + GRID_SIZE / 2;
+			if (cellType === 1) {
+				var wall = LK.getAsset('wall', {
+					x: posX,
+					y: posY,
+					anchorX: 0.5,
+					anchorY: 0.5
+				});
+				walls.push(wall);
+				game.addChild(wall);
+			} else {
+				var floor = LK.getAsset('floor', {
+					x: posX,
+					y: posY,
+					anchorX: 0.5,
+					anchorY: 0.5
+				});
+				floors.push(floor);
+				game.addChild(floor);
+				if (cellType === 2) {
+					exitDoor = LK.getAsset('exit', {
+						x: posX,
+						y: posY + GRID_SIZE / 2,
+						anchorX: 0.5,
+						anchorY: 1.0
+					});
+					game.addChild(exitDoor);
+				}
+			}
+		}
+	}
+	henry = game.addChild(new Henry());
+	henry.x = 1.5 * GRID_SIZE;
+	henry.y = 1.5 * GRID_SIZE + GRID_SIZE / 2;
+	for (var i = 0; i < Math.min(3 + level, 8); i++) {
+		var entity = game.addChild(new Entity());
+		var validPos = false;
+		var attempts = 0;
+		while (!validPos && attempts < 50) {
+			var randomX = (2 + Math.floor(Math.random() * (ROOM_WIDTH - 4))) * GRID_SIZE + GRID_SIZE / 2;
+			var randomY = (2 + Math.floor(Math.random() * (ROOM_HEIGHT - 4))) * GRID_SIZE + GRID_SIZE / 2;
+			if (isValidPosition(randomX, randomY)) {
+				var distanceToHenry = Math.sqrt(Math.pow(henry.x - randomX, 2) + Math.pow(henry.y - randomY, 2));
+				if (distanceToHenry > 300) {
+					entity.x = randomX;
+					entity.y = randomY;
+					entities.push(entity);
+					validPos = true;
+				}
+			}
+			attempts++;
+		}
+		if (!validPos) {
+			entity.destroy();
+		}
+	}
+}
+function isValidPosition(x, y) {
+	var gridX = Math.floor(x / GRID_SIZE);
+	var gridY = Math.floor(y / GRID_SIZE);
+	if (gridX < 0 || gridX >= ROOM_WIDTH || gridY < 0 || gridY >= ROOM_HEIGHT) {
+		return false;
+	}
+	return levelLayout[gridY][gridX] !== 1;
+}
+function checkCollisions() {
+	for (var i = 0; i < entities.length; i++) {
+		var entity = entities[i];
+		var distance = Math.sqrt(Math.pow(henry.x - entity.x, 2) + Math.pow(henry.y - entity.y, 2));
+		if (distance < 50) {
+			henry.decreaseSanity(20);
+			LK.effects.flashScreen(0xFF0000, 500);
+			break;
+		}
+	}
+	if (exitDoor) {
+		var exitDistance = Math.sqrt(Math.pow(henry.x - exitDoor.x, 2) + Math.pow(henry.y - exitDoor.y, 2));
+		if (exitDistance < 60) {
+			LK.getSound('exit_found').play();
+			level++;
+			levelText.setText('Level: ' + level);
+			henry.sanity = Math.min(100, henry.sanity + 10);
+			if (level >= 10) {
+				LK.showYouWin();
+			} else {
+				for (var j = 0; j < entities.length; j++) {
+					entities[j].destroy();
+				}
+				if (exitDoor) {
+					exitDoor.destroy();
+				}
+				initializeLevel();
+			}
+		}
+	}
+}
+initializeLevel();
+game.down = function (x, y, obj) {
+	henry.moveTo(x, y);
+};
+game.update = function () {
+	sanityText.setText('Sanity: ' + henry.sanity);
+	if (LK.ticks % 300 === 0 && henry.sanity > 0) {
+		henry.decreaseSanity(1);
+	}
+	for (var i = 0; i < entities.length; i++) {
+		entities[i].update();
+	}
+};
\ No newline at end of file