/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var CalculatorButton = Container.expand(function () {
	var self = Container.call(this);
	self.buttonType = 'number';
	self.value = '';
	self.background = self.attachAsset('calculatorButton', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.buttonText = new Text2('0', {
		size: 60,
		fill: 0xFFFFFF
	});
	self.buttonText.anchor.set(0.5, 0.5);
	self.addChild(self.buttonText);
	self.setValue = function (value, type) {
		self.value = value;
		self.buttonType = type || 'number';
		self.buttonText.setText(value.toString());
		// Change background based on button type
		self.removeChild(self.background);
		if (type === 'operator') {
			self.background = self.attachAsset('operatorButton', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else if (type === 'equals') {
			self.background = self.attachAsset('equalsButton', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else if (type === 'clear') {
			self.background = self.attachAsset('clearButton', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else {
			self.background = self.attachAsset('calculatorButton', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		}
		self.addChildAt(self.background, 0);
	};
	self.down = function (x, y, obj) {
		LK.getSound('buttonPress').play();
		handleButtonPress(self.value, self.buttonType);
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xf0f0f0
});

/**** 
* Game Code
****/ 
// Calculator state variables
var displayValue = '0';
var firstOperand = null;
var operator = null;
var waitingForOperand = false;
// Create calculator display
var calculatorDisplay = game.attachAsset('display', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 1024,
	y: 300
});
// Create display text
var displayText = new Text2('0', {
	size: 80,
	fill: 0x00ff00
});
displayText.anchor.set(1, 0.5);
displayText.x = 850;
displayText.y = 0;
calculatorDisplay.addChild(displayText);
// Create calculator buttons
var calculatorButtons = [];
var buttonLayout = [['C', '+', '', ''], ['7', '8', '9', ''], ['4', '5', '6', ''], ['1', '2', '3', ''], ['0', '', '', '=']];
for (var row = 0; row < buttonLayout.length; row++) {
	for (var col = 0; col < 4; col++) {
		var buttonValue = buttonLayout[row][col];
		if (buttonValue !== '') {
			var button = new CalculatorButton();
			var buttonType = 'number';
			if (buttonValue === 'C') {
				buttonType = 'clear';
			} else if (buttonValue === '+') {
				buttonType = 'operator';
			} else if (buttonValue === '=') {
				buttonType = 'equals';
			}
			button.setValue(buttonValue, buttonType);
			button.x = 300 + col * 420;
			button.y = 500 + row * 220;
			calculatorButtons.push(button);
			game.addChild(button);
		}
	}
}
function updateDisplay() {
	displayText.setText(displayValue);
}
function inputNumber(number) {
	if (waitingForOperand) {
		displayValue = number;
		waitingForOperand = false;
	} else {
		displayValue = displayValue === '0' ? number : displayValue + number;
	}
	updateDisplay();
}
function inputOperator(nextOperator) {
	var inputValue = parseFloat(displayValue);
	if (firstOperand === null) {
		firstOperand = inputValue;
	} else if (operator) {
		var currentValue = firstOperand || 0;
		var newValue = calculate(currentValue, inputValue, operator);
		displayValue = newValue.toString();
		firstOperand = newValue;
		updateDisplay();
	}
	waitingForOperand = true;
	operator = nextOperator;
}
function calculate(firstOperand, secondOperand, operator) {
	if (operator === '+') {
		return firstOperand + secondOperand;
	}
	return secondOperand;
}
function performCalculation() {
	var inputValue = parseFloat(displayValue);
	if (firstOperand !== null && operator) {
		var newValue = calculate(firstOperand, inputValue, operator);
		displayValue = newValue.toString();
		firstOperand = null;
		operator = null;
		waitingForOperand = true;
		updateDisplay();
	}
}
function clearCalculator() {
	displayValue = '0';
	firstOperand = null;
	operator = null;
	waitingForOperand = false;
	updateDisplay();
}
function handleButtonPress(value, type) {
	if (type === 'number') {
		inputNumber(value);
	} else if (type === 'operator') {
		inputOperator(value);
	} else if (type === 'equals') {
		performCalculation();
	} else if (type === 'clear') {
		clearCalculator();
	}
}
// Initialize display
updateDisplay();
game.update = function () {
	// Calculator logic is handled by button events
};

===================================================================
--- original.js
+++ change.js
@@ -103,10 +103,10 @@
 			} else if (buttonValue === '=') {
 				buttonType = 'equals';
 			}
 			button.setValue(buttonValue, buttonType);
-			button.x = 400 + col * 320;
-			button.y = 500 + row * 170;
+			button.x = 300 + col * 420;
+			button.y = 500 + row * 220;
 			calculatorButtons.push(button);
 			game.addChild(button);
 		}
 	}