===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,235 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
+
+/**** 
+* Classes
+****/ 
+var Block = Container.expand(function (blockType, blockColor) {
+	var self = Container.call(this);
+	self.blockType = blockType || 'buildBlock';
+	self.blockColor = blockColor || 0x4CAF50;
+	self.isPlaced = false;
+	self.originalX = 0;
+	self.originalY = 0;
+	var blockGraphics = self.attachAsset(self.blockType, {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	if (self.blockType === 'moveBlock') {
+		self.moveDirection = 1;
+		self.moveSpeed = 2;
+		self.moveRange = 100;
+	}
+	self.update = function () {
+		if (isPlayMode && self.blockType === 'moveBlock' && self.isPlaced) {
+			self.x += self.moveSpeed * self.moveDirection;
+			if (Math.abs(self.x - self.originalX) > self.moveRange) {
+				self.moveDirection *= -1;
+			}
+		}
+	};
+	self.down = function (x, y, obj) {
+		if (!isPlayMode && !self.isPlaced) {
+			isDragging = true;
+			draggedBlock = self;
+		}
+	};
+	return self;
+});
+var PaletteButton = Container.expand(function (blockType, yPos) {
+	var self = Container.call(this);
+	self.blockType = blockType;
+	self.y = yPos;
+	var buttonBlock = self.attachAsset(blockType, {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		scaleX: 0.8,
+		scaleY: 0.8
+	});
+	self.down = function (x, y, obj) {
+		if (!isPlayMode) {
+			selectedBlockType = self.blockType;
+			// Visual feedback
+			tween(self, {
+				scaleX: 1.0,
+				scaleY: 1.0
+			}, {
+				duration: 200
+			});
+			tween(self, {
+				scaleX: 0.8,
+				scaleY: 0.8
+			}, {
+				duration: 200
+			});
+		}
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.lastIntersecting = {};
+	self.update = function () {
+		if (isPlayMode) {
+			// Check collisions with placed blocks
+			for (var i = 0; i < placedBlocks.length; i++) {
+				var block = placedBlocks[i];
+				var currentIntersecting = self.intersects(block);
+				var wasIntersecting = self.lastIntersecting[i] || false;
+				if (!wasIntersecting && currentIntersecting) {
+					if (block.blockType === 'triggerBlock') {
+						LK.getSound('trigger').play();
+						LK.setScore(LK.getScore() + 10);
+						scoreText.setText(LK.getScore());
+						LK.effects.flashObject(block, 0xFFFF00, 500);
+					} else if (block.blockType === 'barrierBlock') {
+						// Push player back
+						var dx = self.x - block.x;
+						var dy = self.y - block.y;
+						var distance = Math.sqrt(dx * dx + dy * dy);
+						if (distance > 0) {
+							self.x += dx / distance * 10;
+							self.y += dy / distance * 10;
+						}
+					}
+				}
+				self.lastIntersecting[i] = currentIntersecting;
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+// Game state variables
+var isPlayMode = false;
+var isDragging = false;
+var draggedBlock = null;
+var selectedBlockType = 'buildBlock';
+var placedBlocks = [];
+var player = null;
+// UI elements
+var palette = game.addChild(LK.getAsset('palette', {
+	anchorX: 0,
+	anchorY: 0,
+	x: 50,
+	y: 200
+}));
+var modeButton = game.addChild(LK.getAsset('modeButton', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 125,
+	y: 100
+}));
+var modeText = new Text2('BUILD', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+modeText.anchor.set(0.5, 0.5);
+modeText.x = 125;
+modeText.y = 100;
+game.addChild(modeText);
+var scoreText = new Text2('Score: 0', {
+	size: 40,
+	fill: 0x333333
+});
+scoreText.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreText);
+var instructionText = new Text2('Drag blocks to build!', {
+	size: 35,
+	fill: 0x333333
+});
+instructionText.anchor.set(0.5, 0);
+instructionText.y = 50;
+LK.gui.top.addChild(instructionText);
+// Create palette buttons
+var buildButton = game.addChild(new PaletteButton('buildBlock', 250));
+buildButton.x = 100;
+var moveButton = game.addChild(new PaletteButton('moveBlock', 350));
+moveButton.x = 100;
+var triggerButton = game.addChild(new PaletteButton('triggerBlock', 450));
+triggerButton.x = 100;
+var barrierButton = game.addChild(new PaletteButton('barrierBlock', 550));
+barrierButton.x = 100;
+// Mode button functionality
+modeButton.down = function (x, y, obj) {
+	isPlayMode = !isPlayMode;
+	if (isPlayMode) {
+		modeText.setText('PLAY');
+		instructionText.setText('Touch to move player!');
+		// Create player if not exists
+		if (!player) {
+			player = game.addChild(new Player());
+			player.x = 1000;
+			player.y = 1000;
+		}
+		// Set original positions for moving blocks
+		for (var i = 0; i < placedBlocks.length; i++) {
+			if (placedBlocks[i].blockType === 'moveBlock') {
+				placedBlocks[i].originalX = placedBlocks[i].x;
+				placedBlocks[i].originalY = placedBlocks[i].y;
+			}
+		}
+	} else {
+		modeText.setText('BUILD');
+		instructionText.setText('Drag blocks to build!');
+	}
+};
+// Grid snap function
+function snapToGrid(value) {
+	return Math.round(value / 40) * 40;
+}
+// Game event handlers
+game.move = function (x, y, obj) {
+	if (isPlayMode && player) {
+		player.x = x;
+		player.y = y;
+	} else if (isDragging && draggedBlock) {
+		draggedBlock.x = snapToGrid(x);
+		draggedBlock.y = snapToGrid(y);
+	}
+};
+game.down = function (x, y, obj) {
+	if (!isPlayMode && x > 200) {
+		// Don't place blocks on palette area
+		// Create new block
+		var newBlock = new Block(selectedBlockType);
+		newBlock.x = snapToGrid(x);
+		newBlock.y = snapToGrid(y);
+		newBlock.isPlaced = true;
+		placedBlocks.push(newBlock);
+		game.addChild(newBlock);
+		LK.getSound('place').play();
+		LK.setScore(LK.getScore() + 1);
+		scoreText.setText('Score: ' + LK.getScore());
+	}
+};
+game.up = function (x, y, obj) {
+	isDragging = false;
+	draggedBlock = null;
+};
+game.update = function () {
+	// Update score display
+	scoreText.setText('Score: ' + LK.getScore());
+	// Check win condition
+	if (LK.getScore() >= 100) {
+		LK.showYouWin();
+	}
+};
\ No newline at end of file