===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,131 @@
-/****
+/**** 
+* Classes
+****/ 
+var BoxBoundary = Container.expand(function () {
+	var self = Container.call(this);
+	// Create four walls for the box
+	var topWall = self.attachAsset('boxBorder', {
+		anchorX: 0,
+		anchorY: 0,
+		width: 1600,
+		height: 8
+	});
+	var bottomWall = self.attachAsset('boxBorder', {
+		anchorX: 0,
+		anchorY: 0,
+		width: 1600,
+		height: 8
+	});
+	var leftWall = self.attachAsset('boxBorder', {
+		anchorX: 0,
+		anchorY: 0,
+		width: 8,
+		height: 1200
+	});
+	var rightWall = self.attachAsset('boxBorder', {
+		anchorX: 0,
+		anchorY: 0,
+		width: 8,
+		height: 1200
+	});
+	// Position walls
+	topWall.x = 0;
+	topWall.y = 0;
+	bottomWall.x = 0;
+	bottomWall.y = 1200 - 8;
+	leftWall.x = 0;
+	leftWall.y = 0;
+	rightWall.x = 1600 - 8;
+	rightWall.y = 0;
+	return self;
+});
+var Heart = Container.expand(function () {
+	var self = Container.call(this);
+	var heartGraphics = self.attachAsset('heart', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0xf0f8ff
+});
+
+/**** 
+* Game Code
+****/ 
+// Box dimensions
+var boxX = 224; // Center the 1600px box in 2048px screen
+var boxY = 766; // Center the 1200px box in 2732px screen
+var boxWidth = 1600;
+var boxHeight = 1200;
+// Create box boundary
+var boundary = game.addChild(new BoxBoundary());
+boundary.x = boxX;
+boundary.y = boxY;
+// Create heart character
+var heart = game.addChild(new Heart());
+heart.x = boxX + boxWidth / 2; // Center of box
+heart.y = boxY + boxHeight / 2; // Center of box
+// Dragging variables
+var isDragging = false;
+var dragOffsetX = 0;
+var dragOffsetY = 0;
+// Constraint function to keep heart within boundaries
+function constrainHeartPosition() {
+	var heartRadius = 50; // Half of heart width/height
+	// Left boundary
+	if (heart.x - heartRadius < boxX + 8) {
+		heart.x = boxX + 8 + heartRadius;
+	}
+	// Right boundary
+	if (heart.x + heartRadius > boxX + boxWidth - 8) {
+		heart.x = boxX + boxWidth - 8 - heartRadius;
+	}
+	// Top boundary
+	if (heart.y - heartRadius < boxY + 8) {
+		heart.y = boxY + 8 + heartRadius;
+	}
+	// Bottom boundary
+	if (heart.y + heartRadius > boxY + boxHeight - 8) {
+		heart.y = boxY + boxHeight - 8 - heartRadius;
+	}
+}
+// Touch/mouse down event
+game.down = function (x, y, obj) {
+	// Check if touch is on the heart
+	var heartBounds = {
+		left: heart.x - 50,
+		right: heart.x + 50,
+		top: heart.y - 50,
+		bottom: heart.y + 50
+	};
+	if (x >= heartBounds.left && x <= heartBounds.right && y >= heartBounds.top && y <= heartBounds.bottom) {
+		isDragging = true;
+		dragOffsetX = x - heart.x;
+		dragOffsetY = y - heart.y;
+	}
+};
+// Touch/mouse move event
+game.move = function (x, y, obj) {
+	if (isDragging) {
+		heart.x = x - dragOffsetX;
+		heart.y = y - dragOffsetY;
+		constrainHeartPosition();
+	}
+};
+// Touch/mouse up event
+game.up = function (x, y, obj) {
+	isDragging = false;
+	dragOffsetX = 0;
+	dragOffsetY = 0;
+};
+// Game update loop
+game.update = function () {
+	// Ensure heart stays within bounds each frame
+	constrainHeartPosition();
+};
\ No newline at end of file