===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,343 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Building = Container.expand(function () {
+	var self = Container.call(this);
+	var buildingGraphics = self.attachAsset('buildingBase', {
+		anchorX: 0.5,
+		anchorY: 1.0
+	});
+	var greenSpace = self.attachAsset('greenSpace', {
+		anchorX: 0.5,
+		anchorY: 1.0,
+		alpha: 0.7
+	});
+	greenSpace.y = -10;
+	self.buildingHeight = 1.0;
+	self.buildingWidth = 1.0;
+	self.density = 0.5;
+	self.greenCoverage = 0.3;
+	self.trafficScore = 50;
+	self.sustainabilityScore = 50;
+	self.updateBuilding = function () {
+		buildingGraphics.scaleX = self.buildingWidth;
+		buildingGraphics.scaleY = self.buildingHeight;
+		var densityColor = Math.floor(255 * (1 - self.density));
+		buildingGraphics.tint = densityColor << 16 | densityColor << 8 | 255;
+		greenSpace.scaleX = self.greenCoverage;
+		greenSpace.scaleY = self.greenCoverage;
+		greenSpace.alpha = self.greenCoverage * 0.8;
+		self.calculateScores();
+	};
+	self.calculateScores = function () {
+		self.trafficScore = Math.max(0, Math.min(100, 60 - self.density * 40 + self.greenCoverage * 30));
+		self.sustainabilityScore = Math.max(0, Math.min(100, self.greenCoverage * 50 + 25 * (2 - self.buildingHeight) + 25 * (1 - self.density)));
+	};
+	self.down = function (x, y, obj) {
+		LK.getSound('buildingPlace').play();
+		tween(self, {
+			scaleX: 1.1,
+			scaleY: 1.1
+		}, {
+			duration: 200,
+			easing: tween.easeOut
+		});
+		tween(self, {
+			scaleX: 1.0,
+			scaleY: 1.0
+		}, {
+			duration: 200,
+			easing: tween.easeIn
+		});
+	};
+	return self;
+});
+var GridCell = Container.expand(function () {
+	var self = Container.call(this);
+	var cellGraphics = self.attachAsset('gridCell', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0.3
+	});
+	self.occupied = false;
+	self.building = null;
+	self.down = function (x, y, obj) {
+		if (!self.occupied && selectedBuildingType) {
+			self.building = new Building();
+			self.building.x = 0;
+			self.building.y = 0;
+			self.addChild(self.building);
+			self.occupied = true;
+			buildings.push(self.building);
+			updateCityScores();
+		}
+	};
+	return self;
+});
+var ParameterSlider = Container.expand(function () {
+	var self = Container.call(this);
+	var sliderTrack = self.attachAsset('slider', {
+		anchorX: 0,
+		anchorY: 0.5
+	});
+	var handle = self.attachAsset('sliderHandle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.minValue = 0;
+	self.maxValue = 1;
+	self.currentValue = 0.5;
+	self.onValueChange = null;
+	self.isDragging = false;
+	self.updateHandle = function () {
+		var normalizedValue = (self.currentValue - self.minValue) / (self.maxValue - self.minValue);
+		handle.x = normalizedValue * sliderTrack.width;
+	};
+	self.setValue = function (value) {
+		self.currentValue = Math.max(self.minValue, Math.min(self.maxValue, value));
+		self.updateHandle();
+		if (self.onValueChange) {
+			self.onValueChange(self.currentValue);
+		}
+	};
+	self.down = function (x, y, obj) {
+		self.isDragging = true;
+		var localX = x;
+		var normalizedValue = Math.max(0, Math.min(1, localX / sliderTrack.width));
+		var newValue = self.minValue + normalizedValue * (self.maxValue - self.minValue);
+		self.setValue(newValue);
+		LK.getSound('parameterChange').play();
+	};
+	self.updateHandle();
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2c3e50
+});
+
+/**** 
+* Game Code
+****/ 
+var buildings = [];
+var gridCells = [];
+var selectedBuildingType = true;
+var totalTrafficScore = 0;
+var totalSustainabilityScore = 0;
+var targetTrafficScore = 70;
+var targetSustainabilityScore = 75;
+// Create grid
+var gridSize = 6;
+var cellSize = 120;
+var gridStartX = 2048 / 2 - gridSize * cellSize / 2;
+var gridStartY = 800;
+for (var row = 0; row < gridSize; row++) {
+	for (var col = 0; col < gridSize; col++) {
+		var cell = new GridCell();
+		cell.x = gridStartX + col * cellSize;
+		cell.y = gridStartY + row * cellSize;
+		gridCells.push(cell);
+		game.addChild(cell);
+	}
+}
+// UI Elements
+var titleText = new Text2('AI City Architect', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+titleText.anchor.set(0.5, 0);
+titleText.x = 2048 / 2;
+titleText.y = 100;
+game.addChild(titleText);
+var instructionText = new Text2('Tap grid cells to place buildings', {
+	size: 40,
+	fill: 0xECF0F1
+});
+instructionText.anchor.set(0.5, 0);
+instructionText.x = 2048 / 2;
+instructionText.y = 200;
+game.addChild(instructionText);
+// Parameter Sliders
+var heightSlider = new ParameterSlider();
+heightSlider.x = 200;
+heightSlider.y = 400;
+heightSlider.minValue = 0.5;
+heightSlider.maxValue = 2.0;
+heightSlider.setValue(1.0);
+heightSlider.onValueChange = function (value) {
+	updateAllBuildings('buildingHeight', value);
+};
+game.addChild(heightSlider);
+var heightLabel = new Text2('Height', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+heightLabel.anchor.set(0, 0.5);
+heightLabel.x = 200;
+heightLabel.y = 350;
+game.addChild(heightLabel);
+var widthSlider = new ParameterSlider();
+widthSlider.x = 200;
+widthSlider.y = 520;
+widthSlider.minValue = 0.5;
+widthSlider.maxValue = 2.0;
+widthSlider.setValue(1.0);
+widthSlider.onValueChange = function (value) {
+	updateAllBuildings('buildingWidth', value);
+};
+game.addChild(widthSlider);
+var widthLabel = new Text2('Width', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+widthLabel.anchor.set(0, 0.5);
+widthLabel.x = 200;
+widthLabel.y = 470;
+game.addChild(widthLabel);
+var densitySlider = new ParameterSlider();
+densitySlider.x = 200;
+densitySlider.y = 640;
+densitySlider.minValue = 0.1;
+densitySlider.maxValue = 1.0;
+densitySlider.setValue(0.5);
+densitySlider.onValueChange = function (value) {
+	updateAllBuildings('density', value);
+};
+game.addChild(densitySlider);
+var densityLabel = new Text2('Density', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+densityLabel.anchor.set(0, 0.5);
+densityLabel.x = 200;
+densityLabel.y = 590;
+game.addChild(densityLabel);
+var greenSlider = new ParameterSlider();
+greenSlider.x = 1500;
+greenSlider.y = 400;
+greenSlider.minValue = 0.0;
+greenSlider.maxValue = 1.0;
+greenSlider.setValue(0.3);
+greenSlider.onValueChange = function (value) {
+	updateAllBuildings('greenCoverage', value);
+};
+game.addChild(greenSlider);
+var greenLabel = new Text2('Green Coverage', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+greenLabel.anchor.set(0, 0.5);
+greenLabel.x = 1500;
+greenLabel.y = 350;
+game.addChild(greenLabel);
+// Score Display
+var trafficScoreText = new Text2('Traffic: 0/70', {
+	size: 40,
+	fill: 0xF39C12
+});
+trafficScoreText.anchor.set(0, 0);
+trafficScoreText.x = 1500;
+trafficScoreText.y = 520;
+game.addChild(trafficScoreText);
+var sustainabilityScoreText = new Text2('Sustainability: 0/75', {
+	size: 40,
+	fill: 0x2ECC71
+});
+sustainabilityScoreText.anchor.set(0, 0);
+sustainabilityScoreText.x = 1500;
+sustainabilityScoreText.y = 580;
+game.addChild(sustainabilityScoreText);
+var goalText = new Text2('Goal: Reach target scores!', {
+	size: 35,
+	fill: 0xE74C3C
+});
+goalText.anchor.set(0.5, 0);
+goalText.x = 2048 / 2;
+goalText.y = 2400;
+game.addChild(goalText);
+function updateAllBuildings(property, value) {
+	for (var i = 0; i < buildings.length; i++) {
+		buildings[i][property] = value;
+		buildings[i].updateBuilding();
+	}
+	updateCityScores();
+}
+function updateCityScores() {
+	if (buildings.length === 0) {
+		totalTrafficScore = 0;
+		totalSustainabilityScore = 0;
+	} else {
+		var trafficSum = 0;
+		var sustainabilitySum = 0;
+		for (var i = 0; i < buildings.length; i++) {
+			trafficSum += buildings[i].trafficScore;
+			sustainabilitySum += buildings[i].sustainabilityScore;
+		}
+		totalTrafficScore = Math.round(trafficSum / buildings.length);
+		totalSustainabilityScore = Math.round(sustainabilitySum / buildings.length);
+	}
+	trafficScoreText.setText('Traffic: ' + totalTrafficScore + '/' + targetTrafficScore);
+	sustainabilityScoreText.setText('Sustainability: ' + totalSustainabilityScore + '/' + targetSustainabilityScore);
+	if (totalTrafficScore >= targetTrafficScore && totalSustainabilityScore >= targetSustainabilityScore) {
+		LK.setScore(totalTrafficScore + totalSustainabilityScore);
+		if (buildings.length >= 8) {
+			goalText.setText('Success! Perfect parametric city!');
+			goalText.tint = 0x2ecc71;
+			LK.showYouWin();
+		}
+	}
+}
+var draggedSlider = null;
+game.move = function (x, y, obj) {
+	if (draggedSlider && draggedSlider.isDragging) {
+		var localPos = draggedSlider.toLocal({
+			x: x,
+			y: y
+		});
+		var normalizedValue = Math.max(0, Math.min(1, localPos.x / 300));
+		var newValue = draggedSlider.minValue + normalizedValue * (draggedSlider.maxValue - draggedSlider.minValue);
+		draggedSlider.setValue(newValue);
+	}
+};
+game.down = function (x, y, obj) {
+	draggedSlider = null;
+	if (obj === heightSlider || obj.parent === heightSlider) {
+		draggedSlider = heightSlider;
+		draggedSlider.isDragging = true;
+	} else if (obj === widthSlider || obj.parent === widthSlider) {
+		draggedSlider = widthSlider;
+		draggedSlider.isDragging = true;
+	} else if (obj === densitySlider || obj.parent === densitySlider) {
+		draggedSlider = densitySlider;
+		draggedSlider.isDragging = true;
+	} else if (obj === greenSlider || obj.parent === greenSlider) {
+		draggedSlider = greenSlider;
+		draggedSlider.isDragging = true;
+	}
+};
+game.up = function (x, y, obj) {
+	if (draggedSlider) {
+		draggedSlider.isDragging = false;
+		draggedSlider = null;
+	}
+};
+game.update = function () {
+	// Animate building color variations based on performance
+	for (var i = 0; i < buildings.length; i++) {
+		var building = buildings[i];
+		var combinedScore = (building.trafficScore + building.sustainabilityScore) / 2;
+		if (combinedScore > 60) {
+			building.alpha = 1.0;
+		} else {
+			building.alpha = 0.7 + 0.3 * Math.sin(LK.ticks * 0.1);
+		}
+	}
+};
\ No newline at end of file