===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,225 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Nerd class
+var Nerd = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach nerd asset (green ellipse)
+	var nerdAsset = self.attachAsset('nerd', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	nerdAsset.width = 120;
+	nerdAsset.height = 120;
+	nerdAsset.color = 0x6be445; // green
+	nerdAsset.shape = 'ellipse';
+	// Move nerd to a random position in the classroom (with padding)
+	self.moveToRandom = function () {
+		var pad = 180;
+		var nx = pad + Math.random() * (2048 - 2 * pad);
+		var ny = 400 + Math.random() * (2732 - 800);
+		tween(self, {
+			x: nx,
+			y: ny
+		}, {
+			duration: 900 + Math.random() * 800,
+			easing: tween.easeInOut
+		});
+	};
+	return self;
+});
+// Student (Player) class
+var Student = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach student asset (blue box)
+	var studentAsset = self.attachAsset('student', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set color and size
+	studentAsset.width = 140;
+	studentAsset.height = 140;
+	studentAsset.color = 0x3a8ee6; // blue
+	// For possible future use
+	self.radius = 70;
+	return self;
+});
+// Teacher class
+var Teacher = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach teacher asset (red rectangle)
+	var teacherAsset = self.attachAsset('teacher', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	teacherAsset.width = 180;
+	teacherAsset.height = 180;
+	teacherAsset.color = 0xe64b3a; // red
+	// For patrol direction
+	self.targetX = 0;
+	self.targetY = 0;
+	self.speed = 8 + Math.random() * 4;
+	// Move teacher to a random position in the classroom (with padding)
+	self.moveToRandom = function () {
+		var pad = 180;
+		self.targetX = pad + Math.random() * (2048 - 2 * pad);
+		self.targetY = 400 + Math.random() * (2732 - 800);
+		self.speed = 8 + Math.random() * 4;
+	};
+	// Teacher patrol update
+	self.update = function () {
+		var dx = self.targetX - self.x;
+		var dy = self.targetY - self.y;
+		var dist = Math.sqrt(dx * dx + dy * dy);
+		if (dist < 10) {
+			self.moveToRandom();
+		} else {
+			self.x += dx / dist * self.speed;
+			self.y += dy / dist * self.speed;
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0xf7e7c1 // light classroom color
+});
+
+/**** 
+* Game Code
+****/ 
+// --- Game variables ---
+var student = new Student();
+var nerd = new Nerd();
+var teacher = new Teacher();
+var dragNode = null;
+var lastCopying = false;
+var copyingTimer = 0;
+var copyScore = 0;
+var scoreTxt = null;
+var lastTeacherCaught = false;
+var copyDistance = 180; // px, how close to nerd to copy
+var teacherCatchDistance = 220; // px, how close to teacher to get caught
+var teacherFOV = Math.PI / 2; // 90 degree field of view
+var teacherVisionDistance = 500; // px, how far teacher can "see"
+var nerdMoveTimer = 0;
+// --- Add elements to game ---
+game.addChild(nerd);
+game.addChild(student);
+game.addChild(teacher);
+// Initial positions
+student.x = 2048 / 2;
+student.y = 2732 - 400;
+nerd.x = 2048 / 2;
+nerd.y = 900;
+teacher.x = 2048 / 2;
+teacher.y = 400;
+teacher.moveToRandom();
+nerd.moveToRandom();
+// --- Score display ---
+scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0x222222
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// --- Helper functions ---
+// Distance between two objects
+function dist(a, b) {
+	var dx = a.x - b.x;
+	var dy = a.y - b.y;
+	return Math.sqrt(dx * dx + dy * dy);
+}
+// Angle from teacher to student
+function angleTo(a, b) {
+	return Math.atan2(b.y - a.y, b.x - a.x);
+}
+// Is student in teacher's field of view and close enough?
+function teacherCanSeeStudent() {
+	var d = dist(teacher, student);
+	if (d > teacherVisionDistance) return false;
+	// Teacher "looks" toward their movement direction (target)
+	var teacherDir = Math.atan2(teacher.targetY - teacher.y, teacher.targetX - teacher.x);
+	var angleToStu = angleTo(teacher, student);
+	var diff = Math.abs(teacherDir - angleToStu);
+	if (diff > Math.PI) diff = 2 * Math.PI - diff;
+	return diff < teacherFOV / 2;
+}
+// --- Dragging logic ---
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		// Clamp to classroom area (avoid top menu)
+		var pad = 100;
+		var minY = 400;
+		var maxY = 2732 - pad;
+		var minX = pad;
+		var maxX = 2048 - pad;
+		dragNode.x = Math.max(minX, Math.min(maxX, x));
+		dragNode.y = Math.max(minY, Math.min(maxY, y));
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	// Only allow drag if not caught
+	if (!lastTeacherCaught) {
+		dragNode = student;
+		handleMove(x, y, obj);
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// --- Main game update ---
+game.update = function () {
+	// Move nerd occasionally
+	nerdMoveTimer++;
+	if (nerdMoveTimer > 90 + Math.random() * 60) {
+		nerd.moveToRandom();
+		nerdMoveTimer = 0;
+	}
+	// Teacher patrol
+	teacher.update();
+	// --- Copying logic ---
+	var copying = false;
+	if (dist(student, nerd) < copyDistance) {
+		copying = true;
+	}
+	// If copying, increment timer and score
+	if (copying) {
+		copyingTimer++;
+		if (copyingTimer % 30 === 0) {
+			// every 0.5s
+			copyScore++;
+			scoreTxt.setText(copyScore);
+			// Win condition
+			if (copyScore >= 30) {
+				LK.showYouWin();
+			}
+		}
+		// Visual feedback: flash nerd green
+		if (!lastCopying) {
+			LK.effects.flashObject(nerd, 0x00ff00, 400);
+		}
+	}
+	lastCopying = copying;
+	// --- Teacher detection logic ---
+	var teacherCaught = false;
+	// If student is copying and teacher can see and is close enough
+	if (copying && teacherCanSeeStudent() && dist(teacher, student) < teacherCatchDistance) {
+		teacherCaught = true;
+	}
+	if (teacherCaught && !lastTeacherCaught) {
+		// Flash screen red
+		LK.effects.flashScreen(0xff0000, 1000);
+		LK.showGameOver();
+	}
+	lastTeacherCaught = teacherCaught;
+};
\ No newline at end of file