===================================================================
--- original.js
+++ change.js
@@ -17,55 +17,8 @@
 	// For collision, use self.x, self.y, self.radius
 	// No per-instance update needed; movement is handled by drag
 	return self;
 });
-// Hazard (spike) class
-var Hazard = Container.expand(function () {
-	var self = Container.call(this);
-	var hazardSprite = self.attachAsset('hazard', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.radius = hazardSprite.width * 0.5;
-	return self;
-});
-// Mat (platform) class
-var Mat = Container.expand(function () {
-	var self = Container.call(this);
-	var matSprite = self.attachAsset('mat', {
-		anchorX: 0,
-		anchorY: 0
-	});
-	self.width = matSprite.width;
-	self.height = matSprite.height;
-	// Each mat can have hazards and treats as children
-	self.hazards = [];
-	self.treats = [];
-	// Used for vertical scrolling
-	self.speed = 8;
-	// Update method for scrolling
-	self.update = function () {
-		self.y += self.speed;
-		// Move hazards and treats with the mat
-		for (var i = 0; i < self.hazards.length; i++) {
-			self.hazards[i].y += self.speed;
-		}
-		for (var i = 0; i < self.treats.length; i++) {
-			self.treats[i].y += self.speed;
-		}
-	};
-	return self;
-});
-// Treat (collectible) class
-var Treat = Container.expand(function () {
-	var self = Container.call(this);
-	var treatSprite = self.attachAsset('treat', {
-		anchorX: 0.5,
-		anchorY: 0.5
-	});
-	self.radius = treatSprite.width * 0.5;
-	return self;
-});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -75,40 +28,16 @@
 
 /**** 
 * Game Code
 ****/ 
-// Sound effects
-// Treat (collectible)
-// Hazard (spike)
-// Mat (platform)
-// Hamster (player)
 // Game constants
 var GAME_WIDTH = 2048;
 var GAME_HEIGHT = 2732;
-var MAT_HEIGHT = 220;
-var MAT_GAP = 60;
 var HAMSTER_START_X = GAME_WIDTH / 2;
 var HAMSTER_START_Y = GAME_HEIGHT - 500;
-var MIN_HAZARDS = 1;
-var MAX_HAZARDS = 3;
-var MIN_TREATS = 1;
-var MAX_TREATS = 2;
-var MAT_SCROLL_BASE = 8;
-var MAT_SCROLL_INC = 0.5; // Speed increase per 10 points
 // Game state
-var mats = [];
 var hamster = null;
 var dragNode = null;
-var lastPointer = {
-	x: 0,
-	y: 0
-};
-var scoreTxt = null;
-var score = 0;
-var gameOver = false;
-var matSpawnY = 0;
-var lastMatY = 0;
-var matSpeed = MAT_SCROLL_BASE;
 // --- Infinite grass background ---
 var bgGrass1 = LK.getAsset('grass', {
 	anchorX: 0,
 	anchorY: 0,
@@ -124,88 +53,25 @@
 bgGrass1.y = 0;
 bgGrass2.y = -GAME_HEIGHT;
 game.addChild(bgGrass1);
 game.addChild(bgGrass2);
-// --- Score display ---
-scoreTxt = new Text2('0', {
-	size: 120,
-	fill: 0x222222
-});
-scoreTxt.anchor.set(0.5, 0);
-LK.gui.top.addChild(scoreTxt);
 // --- Hamster ---
 hamster = new Hamster();
 hamster.x = HAMSTER_START_X;
 hamster.y = HAMSTER_START_Y;
 game.addChild(hamster);
-// --- Mat spawning ---
-function spawnMat(yPos, speed) {
-	var mat = new Mat();
-	mat.y = yPos;
-	mat.x = 0;
-	mat.speed = speed;
-	// Hazards
-	var hazardCount = MIN_HAZARDS + Math.floor(Math.random() * (MAX_HAZARDS - MIN_HAZARDS + 1));
-	for (var i = 0; i < hazardCount; i++) {
-		var hazard = new Hazard();
-		// Place hazard randomly, but not too close to the edge
-		var margin = 200;
-		hazard.x = margin + Math.random() * (GAME_WIDTH - 2 * margin);
-		hazard.y = mat.y + MAT_HEIGHT / 2;
-		mat.hazards.push(hazard);
-		game.addChild(hazard);
-	}
-	// Treats
-	var treatCount = MIN_TREATS + Math.floor(Math.random() * (MAX_TREATS - MIN_TREATS + 1));
-	for (var i = 0; i < treatCount; i++) {
-		var treat = new Treat();
-		// Place treat randomly, not overlapping hazards
-		var margin = 200;
-		var valid = false;
-		var tx = 0;
-		while (!valid) {
-			tx = margin + Math.random() * (GAME_WIDTH - 2 * margin);
-			valid = true;
-			for (var j = 0; j < mat.hazards.length; j++) {
-				if (Math.abs(mat.hazards[j].x - tx) < 180) {
-					valid = false;
-					break;
-				}
-			}
-		}
-		treat.x = tx;
-		treat.y = mat.y + MAT_HEIGHT / 2;
-		mat.treats.push(treat);
-		game.addChild(treat);
-	}
-	mats.push(mat);
-	game.addChild(mat);
-	lastMatY = mat.y;
-}
-// --- Initial mats ---
-matSpawnY = GAME_HEIGHT - MAT_HEIGHT;
-while (matSpawnY > -MAT_HEIGHT) {
-	spawnMat(matSpawnY, matSpeed);
-	matSpawnY -= MAT_HEIGHT + MAT_GAP;
-}
 // --- Drag controls ---
 game.down = function (x, y, obj) {
-	// Only allow drag if not game over
-	if (gameOver) return;
-	// Only start drag if touch is on hamster
 	var dx = x - hamster.x;
 	var dy = y - hamster.y;
 	if (dx * dx + dy * dy < hamster.radius * hamster.radius) {
 		dragNode = hamster;
-		lastPointer.x = x;
-		lastPointer.y = y;
 	}
 };
 game.up = function (x, y, obj) {
 	dragNode = null;
 };
 game.move = function (x, y, obj) {
-	if (gameOver) return;
 	if (dragNode) {
 		// Clamp hamster to game area
 		var nx = x;
 		var ny = y;
@@ -217,150 +83,18 @@
 		hamster.x = nx;
 		hamster.y = ny;
 	}
 };
-// --- Collision detection ---
-function circleIntersect(ax, ay, ar, bx, by, br) {
-	var dx = ax - bx;
-	var dy = ay - by;
-	var dist = dx * dx + dy * dy;
-	var rad = ar + br;
-	return dist < rad * rad;
-}
 // --- Game update ---
 game.update = function () {
-	if (gameOver) return;
 	// Scroll background grass
-	bgGrass1.y += matSpeed;
-	bgGrass2.y += matSpeed;
+	var speed = 8;
+	bgGrass1.y += speed;
+	bgGrass2.y += speed;
 	// Loop grass backgrounds
 	if (bgGrass1.y >= GAME_HEIGHT) {
 		bgGrass1.y = bgGrass2.y - GAME_HEIGHT;
 	}
 	if (bgGrass2.y >= GAME_HEIGHT) {
 		bgGrass2.y = bgGrass1.y - GAME_HEIGHT;
 	}
-	// Increase mat speed as score increases
-	matSpeed = MAT_SCROLL_BASE + MAT_SCROLL_INC * Math.floor(score / 10);
-	// Move mats, hazards, treats
-	for (var i = mats.length - 1; i >= 0; i--) {
-		var mat = mats[i];
-		mat.speed = matSpeed;
-		mat.update();
-		// Remove mats that are off screen
-		if (mat.y > GAME_HEIGHT) {
-			// Remove hazards and treats
-			for (var h = 0; h < mat.hazards.length; h++) {
-				mat.hazards[h].destroy();
-			}
-			for (var t = 0; t < mat.treats.length; t++) {
-				mat.treats[t].destroy();
-			}
-			mat.destroy();
-			mats.splice(i, 1);
-		}
-	}
-	// Spawn new mat if needed
-	var topMatY = mats.length > 0 ? mats[0].y : GAME_HEIGHT;
-	if (topMatY > -MAT_HEIGHT - MAT_GAP) {
-		spawnMat(topMatY - MAT_HEIGHT - MAT_GAP, matSpeed);
-	}
-	// --- Collisions ---
-	// Hazards
-	for (var i = 0; i < mats.length; i++) {
-		var mat = mats[i];
-		for (var h = 0; h < mat.hazards.length; h++) {
-			var hazard = mat.hazards[h];
-			// Add invincibility check
-			if (!hazard._hit && !hamster.invincible && circleIntersect(hamster.x, hamster.y, hamster.radius * 0.7, hazard.x, hazard.y, hazard.radius * 0.8)) {
-				hazard._hit = true;
-				// Flash hamster red
-				LK.effects.flashObject(hamster, 0xff0000, 400);
-				LK.getSound('hit').play();
-				// Set hamster invincible for 1.2 seconds
-				hamster.invincible = true;
-				hamster.alpha = 0.5;
-				LK.setTimeout(function () {
-					if (hamster) {
-						hamster.invincible = false;
-						hamster.alpha = 1;
-					}
-				}, 1200);
-				// Do NOT end game, just give a penalty (optional: could reduce score or play effect)
-				// Optionally, you could reduce score or add a penalty here
-				break; // Only one hit per frame
-			}
-		}
-		// Treats
-		for (var t = mat.treats.length - 1; t >= 0; t--) {
-			var treat = mat.treats[t];
-			if (!treat._collected && circleIntersect(hamster.x, hamster.y, hamster.radius * 0.7, treat.x, treat.y, treat.radius * 0.8)) {
-				treat._collected = true;
-				LK.getSound('collect').play();
-				// Animate treat
-				tween(treat, {
-					alpha: 0,
-					scaleX: 1.5,
-					scaleY: 1.5
-				}, {
-					duration: 200,
-					onFinish: function onFinish() {
-						treat.destroy();
-					}
-				});
-				mat.treats.splice(t, 1);
-				score += 1;
-				LK.setScore(score);
-				scoreTxt.setText(score);
-			}
-		}
-	}
-};
-// --- Reset on game over ---
-LK.on('gameover', function () {
-	// Clean up all mats, hazards, treats
-	for (var i = 0; i < mats.length; i++) {
-		var mat = mats[i];
-		for (var h = 0; h < mat.hazards.length; h++) {
-			mat.hazards[h].destroy();
-		}
-		for (var t = 0; t < mat.treats.length; t++) {
-			mat.treats[t].destroy();
-		}
-		mat.destroy();
-	}
-	mats = [];
-	// Remove hamster
-	hamster.destroy();
-	// Reset score
-	score = 0;
-	LK.setScore(0);
-	scoreTxt.setText('0');
-	gameOver = false;
-	// Respawn hamster
-	hamster = new Hamster();
-	hamster.x = HAMSTER_START_X;
-	hamster.y = HAMSTER_START_Y;
-	hamster.invincible = true;
-	hamster.alpha = 0.5;
-	hamster.invincible = true;
-	hamster.alpha = 0.5;
-	game.addChild(hamster);
-	LK.setTimeout(function () {
-		if (hamster) {
-			hamster.invincible = false;
-			hamster.alpha = 1;
-		}
-	}, 1200);
-	LK.setTimeout(function () {
-		if (hamster) {
-			hamster.invincible = false;
-			hamster.alpha = 1;
-		}
-	}, 1200);
-	// Respawn mats
-	matSpawnY = GAME_HEIGHT - MAT_HEIGHT;
-	while (matSpawnY > -MAT_HEIGHT) {
-		spawnMat(matSpawnY, MAT_SCROLL_BASE);
-		matSpawnY -= MAT_HEIGHT + MAT_GAP;
-	}
-});
\ No newline at end of file
+};
\ No newline at end of file