===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,269 @@
-/****
+/**** 
+* Classes
+****/ 
+// Enemy class
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('enemy_dino', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.vx = -2;
+	self.lastX = 0;
+	self.lastY = 0;
+	self.update = function () {
+		self.lastX = self.x;
+		self.lastY = self.y;
+		// Simple left-right movement
+		self.x += self.vx;
+	};
+	return self;
+});
+// LevelGate class
+var LevelGate = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('level_gate', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.active = false;
+	return self;
+});
+// Initialize player
+// Meteor class
+var Meteor = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('meteor', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.vy = 8;
+	self.lastY = 0;
+	self.update = function () {
+		self.lastY = self.y;
+		self.y += self.vy;
+	};
+	return self;
+});
+// Mushroom class
+var Mushroom = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('mushroom', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.collected = false;
+	return self;
+});
+// Platform class
+var Platform = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('platform', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+// Player class
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var gfx = self.attachAsset('dino_player', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.vx = 0;
+	self.vy = 0;
+	self.isJumping = false;
+	self.lastX = 0;
+	self.lastY = 0;
+	self.update = function () {
+		self.lastX = self.x;
+		self.lastY = self.y;
+		// Movement and gravity will be handled in game.update
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x000000
-});
\ No newline at end of file
+});
+
+/**** 
+* Game Code
+****/ 
+// Global game objects and state
+var player = null;
+var platforms = [];
+var mushrooms = [];
+var enemies = [];
+var meteors = [];
+var levelGate = null;
+var score = 0;
+var mushroomsToNextLevel = 10;
+var canLevelUp = false;
+// Initialize player
+player = new Player();
+player.x = 300;
+player.y = 2200;
+game.addChild(player);
+// Example platforms
+var plat1 = new Platform();
+plat1.x = 300;
+plat1.y = 2300;
+game.addChild(plat1);
+platforms.push(plat1);
+var plat2 = new Platform();
+plat2.x = 800;
+plat2.y = 2000;
+game.addChild(plat2);
+platforms.push(plat2);
+var plat3 = new Platform();
+plat3.x = 1500;
+plat3.y = 1800;
+game.addChild(plat3);
+platforms.push(plat3);
+// Example mushrooms
+for (var i = 0; i < mushroomsToNextLevel; i++) {
+	var mush = new Mushroom();
+	mush.x = 400 + i * 150;
+	mush.y = 2200 - i % 3 * 200;
+	game.addChild(mush);
+	mushrooms.push(mush);
+}
+// Example enemy
+var enemy1 = new Enemy();
+enemy1.x = 1200;
+enemy1.y = 2300;
+game.addChild(enemy1);
+enemies.push(enemy1);
+// Example meteor (will be dropped randomly in game.update)
+// Touch controls
+var moveDir = 0; // -1: left, 1: right, 0: idle
+var jumpQueued = false;
+game.down = function (x, y, obj) {
+	// Left half: move left, right half: move right
+	if (x < 1024) {
+		moveDir = -1;
+	} else {
+		moveDir = 1;
+	}
+};
+game.up = function (x, y, obj) {
+	moveDir = 0;
+};
+game.doubleDown = function (x, y, obj) {
+	jumpQueued = true;
+};
+game.update = function () {
+	// Player movement
+	var speed = 16;
+	var gravity = 4;
+	var jumpPower = -60;
+	// Horizontal movement
+	player.vx = moveDir * speed;
+	player.x += player.vx;
+	// Gravity
+	player.vy += gravity;
+	// Jump
+	if (jumpQueued && !player.isJumping) {
+		player.vy = jumpPower;
+		player.isJumping = true;
+		jumpQueued = false;
+	}
+	// Apply vertical movement
+	player.y += player.vy;
+	// Platform collision
+	var onPlatform = false;
+	for (var i = 0; i < platforms.length; i++) {
+		var plat = platforms[i];
+		// Simple AABB check for landing on top
+		if (player.y + 10 >= plat.y - plat.height / 2 && player.y + 10 <= plat.y + plat.height / 2 && player.x > plat.x - plat.width / 2 && player.x < plat.x + plat.width / 2 && player.vy >= 0) {
+			player.y = plat.y - plat.height / 2 - 10;
+			player.vy = 0;
+			player.isJumping = false;
+			onPlatform = true;
+		}
+	}
+	// Ground collision
+	if (player.y > 2300) {
+		player.y = 2300;
+		player.vy = 0;
+		player.isJumping = false;
+	}
+	// Mushroom collection
+	for (var i = 0; i < mushrooms.length; i++) {
+		var mush = mushrooms[i];
+		if (!mush.collected && player.intersects(mush)) {
+			mush.collected = true;
+			mush.visible = false;
+			score += 1;
+			if (score >= mushroomsToNextLevel) {
+				canLevelUp = true;
+				if (levelGate) levelGate.active = true;
+			}
+		}
+	}
+	// Enemy collision
+	for (var i = 0; i < enemies.length; i++) {
+		var enemy = enemies[i];
+		enemy.update();
+		if (player.intersects(enemy)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+	// Meteor drop (randomly every 120 ticks)
+	if (LK.ticks % 120 === 0) {
+		var meteor = new Meteor();
+		meteor.x = 400 + Math.floor(Math.random() * 1200);
+		meteor.y = -100;
+		game.addChild(meteor);
+		meteors.push(meteor);
+	}
+	// Meteor update and collision
+	for (var i = meteors.length - 1; i >= 0; i--) {
+		var meteor = meteors[i];
+		meteor.update();
+		if (player.intersects(meteor)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+		if (meteor.y > 2800) {
+			meteor.destroy();
+			meteors.splice(i, 1);
+		}
+	}
+	// Level gate logic
+	if (!levelGate) {
+		levelGate = new LevelGate();
+		levelGate.x = 1800;
+		levelGate.y = 1700;
+		game.addChild(levelGate);
+	}
+	if (player.intersects(levelGate)) {
+		if (canLevelUp) {
+			LK.showYouWin();
+		} else {
+			// Play warning sound
+			LK.getSound('warn').play();
+		}
+	}
+};
+// Score display
+var scoreTxt = new Text2('0', {
+	size: 120,
+	fill: "#fff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// Update score display in game.update
+var oldGameUpdate = game.update;
+game.update = function () {
+	scoreTxt.setText(score);
+	oldGameUpdate();
+};
\ No newline at end of file