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

/**** 
* Classes
****/ 
var BiedronkaShop = Container.expand(function () {
	var self = Container.call(this);
	var shopGraphics = self.attachAsset('biedronka', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var Building = Container.expand(function () {
	var self = Container.call(this);
	var buildingGraphics = self.attachAsset('building', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var Destination = Container.expand(function () {
	var self = Container.call(this);
	var destinationGraphics = self.attachAsset('destination', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.pulse = function () {
		tween(self, {
			scaleX: 1.2,
			scaleY: 1.2
		}, {
			duration: 500,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(self, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 500,
					easing: tween.easeInOut,
					onFinish: function onFinish() {
						self.pulse();
					}
				});
			}
		});
	};
	return self;
});
var GroceryStore = Container.expand(function () {
	var self = Container.call(this);
	self.items = [{
		name: 'Bread',
		price: 10,
		health: 5
	}, {
		name: 'Milk',
		price: 15,
		health: 8
	}, {
		name: 'Apples',
		price: 12,
		health: 6
	}, {
		name: 'Cheese',
		price: 20,
		health: 10
	}, {
		name: 'Water',
		price: 5,
		health: 3
	}, {
		name: 'Grilled Sausages',
		price: 30,
		health: 15
	}];
	self.show = function () {
		// Create store background
		var storeBg = LK.getAsset('road', {
			scaleX: 15,
			scaleY: 18,
			x: 1024,
			y: 1366,
			anchorX: 0.5,
			anchorY: 0.5
		});
		storeBg.alpha = 0.95;
		game.addChild(storeBg);
		// Store title
		var storeTitle = new Text2('Biedronka Grocery Store', {
			size: 70,
			fill: 0x00ff00
		});
		storeTitle.anchor.set(0.5, 0);
		storeTitle.x = 1024;
		storeTitle.y = 800;
		game.addChild(storeTitle);
		// Player stats
		var playerCoins = storage.coins || 0;
		var playerHealth = storage.health || 100;
		var statsText = new Text2('Coins: ' + playerCoins + ' | Health: ' + playerHealth, {
			size: 50,
			fill: 0xffffff
		});
		statsText.anchor.set(0.5, 0);
		statsText.x = 1024;
		statsText.y = 900;
		game.addChild(statsText);
		// Items display
		var itemsContainer = new Container();
		itemsContainer.x = 1024;
		itemsContainer.y = 1100;
		game.addChild(itemsContainer);
		for (var i = 0; i < self.items.length; i++) {
			var item = self.items[i];
			var itemBg = LK.getAsset('road', {
				scaleX: 12,
				scaleY: 2.5,
				x: 0,
				y: i * 140,
				anchorX: 0.5,
				anchorY: 0.5
			});
			itemBg.alpha = 0.7;
			itemsContainer.addChild(itemBg);
			var itemText = new Text2(item.name + ' - ' + item.price + ' coins (+' + item.health + ' health)', {
				size: 45,
				fill: playerCoins >= item.price ? 0x00ffaa : 0xff4444
			});
			itemText.anchor.set(0.5, 0.5);
			itemText.x = 0;
			itemText.y = i * 140;
			itemsContainer.addChild(itemText);
			// Store item data for click detection
			itemBg.itemData = item;
			itemBg.itemIndex = i;
		}
		// Close button
		var closeButton = LK.getAsset('road', {
			scaleX: 8,
			scaleY: 2.5,
			x: 1024,
			y: 1900,
			anchorX: 0.5,
			anchorY: 0.5
		});
		closeButton.alpha = 0.8;
		game.addChild(closeButton);
		var closeText = new Text2('Close Shop', {
			size: 50,
			fill: 0xffffff
		});
		closeText.anchor.set(0.5, 0.5);
		closeText.x = 1024;
		closeText.y = 1900;
		game.addChild(closeText);
		// Store references for cleanup
		self.storeElements = [storeBg, storeTitle, statsText, itemsContainer, closeButton, closeText];
		// Handle purchases
		var handlePurchase = function handlePurchase(x, y, obj) {
			// Check if clicking on items
			var localPos = itemsContainer.toLocal({
				x: x,
				y: y
			});
			var itemIndex = Math.floor((localPos.y + 70) / 140);
			if (itemIndex >= 0 && itemIndex < self.items.length) {
				var item = self.items[itemIndex];
				var currentCoins = storage.coins || 0;
				if (currentCoins >= item.price) {
					// Purchase item
					storage.coins = currentCoins - item.price;
					storage.health = Math.min(100, (storage.health || 100) + item.health);
					// Update score
					LK.setScore(LK.getScore() + item.health * 2);
					scoreTxt.setText('Score: ' + LK.getScore());
					// Flash green for successful purchase
					LK.effects.flashScreen(0x00ff00, 300);
					// Close and reopen to refresh display
					self.close();
					LK.setTimeout(function () {
						self.show();
					}, 100);
				} else {
					// Not enough coins
					LK.effects.flashScreen(0xff0000, 300);
				}
				return;
			}
			// Check if clicking close button
			if (Math.abs(x - 1024) < 480 && Math.abs(y - 1900) < 150) {
				self.close();
			}
		};
		game.down = handlePurchase;
	};
	self.close = function () {
		if (self.storeElements) {
			for (var i = 0; i < self.storeElements.length; i++) {
				self.storeElements[i].destroy();
			}
			self.storeElements = null;
		}
		// Restore game activity and normal game controls
		isGameActive = true;
		game.down = function (x, y, obj) {
			// Check if clicking period selection button
			if (x >= 20 && x <= 20 + 200 && y >= 150 && y <= 200) {
				showPeriodSelection();
				return;
			}
			if (!gameStarted) {
				gameStarted = true;
				initializeLevel();
			}
			lastTouchX = x;
			lastTouchY = y;
		};
		game.up = function (x, y, obj) {
			if (!gameStarted || !isGameActive) return;
			// Calculate player center position on screen
			var playerCenterX = player.x;
			var playerCenterY = player.y;
			// Calculate direction from player to tap position
			var deltaX = x - playerCenterX;
			var deltaY = y - playerCenterY;
			// Only move if tap is far enough from player center
			if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
				if (Math.abs(deltaX) > Math.abs(deltaY)) {
					handleMovement(deltaX > 0 ? 1 : -1, 0);
				} else {
					handleMovement(0, deltaY > 0 ? 1 : -1);
				}
			}
		};
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gridX = 0;
	self.gridY = 0;
	self.isMoving = false;
	self.moveToGrid = function (newGridX, newGridY) {
		if (self.isMoving) return false;
		var targetX = newGridX * GRID_SIZE + GRID_SIZE / 2;
		var targetY = newGridY * GRID_SIZE + GRID_SIZE / 2;
		self.isMoving = true;
		self.gridX = newGridX;
		self.gridY = newGridY;
		tween(self, {
			x: targetX,
			y: targetY
		}, {
			duration: 200,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.isMoving = false;
				LK.getSound('move').play();
			}
		});
		return true;
	};
	return self;
});
var Road = Container.expand(function () {
	var self = Container.call(this);
	var roadGraphics = self.attachAsset('road', {
		anchorX: 0,
		anchorY: 0
	});
	return self;
});
var SovietGuard = Container.expand(function () {
	var self = Container.call(this);
	var guardGraphics = self.attachAsset('guard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.centerX = 0;
	self.centerY = 0;
	self.radius = 60;
	self.angle = 0;
	self.speed = 0.05;
	self.startCircularMovement = function () {
		self.angle = 0;
		self.circularTween();
	};
	self.circularTween = function () {
		tween(self, {
			angle: self.angle + Math.PI * 2
		}, {
			duration: 4000,
			easing: tween.linear,
			onFinish: function onFinish() {
				self.circularTween();
			}
		});
	};
	self.update = function () {
		self.x = self.centerX + Math.cos(self.angle) * self.radius;
		self.y = self.centerY + Math.sin(self.angle) * self.radius;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x263238
});

/**** 
* Game Code
****/ 
var GRID_SIZE = 120;
var GRID_WIDTH = 17;
var GRID_HEIGHT = 22;
var currentLevel = 1;
var timeLeft = 60;
var isGameActive = true;
var gameStarted = false;
var historicalPeriods = ['Stone Age', 'Bronze Age', 'Iron Age', 'Roman Era', 'Medieval', 'Renaissance', 'Industrial Age', 'Modern Era', 'Space Age', 'Future'];
// Initialize storage with defaults
if (storage.coins === undefined) storage.coins = 50;
if (storage.health === undefined) storage.health = 100;
var groceryStore = new GroceryStore();
var cityGrid = [];
var player;
var destination;
var obstacles = [];
var buildings = [];
var guards = [];
var biedronkas = [];
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var timeTxt = new Text2('Time: 60', {
	size: 60,
	fill: 0xFFFFFF
});
timeTxt.anchor.set(0.5, 0);
timeTxt.y = 80;
LK.gui.top.addChild(timeTxt);
var levelTxt = new Text2('Stone Age', {
	size: 50,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(levelTxt);
levelTxt.x = -20;
levelTxt.y = 20;
function initializeGrid() {
	cityGrid = [];
	for (var x = 0; x < GRID_WIDTH; x++) {
		cityGrid[x] = [];
		for (var y = 0; y < GRID_HEIGHT; y++) {
			cityGrid[x][y] = 'road';
		}
	}
}
function createBuildings() {
	buildings = [];
	var buildingCount = Math.min(8 + currentLevel * 2, 20);
	for (var i = 0; i < buildingCount; i++) {
		var building = new Building();
		var gridX = Math.floor(Math.random() * (GRID_WIDTH - 2)) + 1;
		var gridY = Math.floor(Math.random() * (GRID_HEIGHT - 2)) + 1;
		building.x = gridX * GRID_SIZE;
		building.y = gridY * GRID_SIZE;
		game.addChild(building);
		buildings.push(building);
		cityGrid[gridX][gridY] = 'building';
		if (gridX + 1 < GRID_WIDTH) cityGrid[gridX + 1][gridY] = 'building';
	}
}
function createObstacles() {
	obstacles = [];
	var obstacleCount = Math.min(3 + currentLevel, 12);
	for (var i = 0; i < obstacleCount; i++) {
		var attempts = 0;
		var gridX, gridY;
		do {
			gridX = Math.floor(Math.random() * GRID_WIDTH);
			gridY = Math.floor(Math.random() * GRID_HEIGHT);
			attempts++;
		} while (cityGrid[gridX][gridY] !== 'road' && attempts < 50);
		if (attempts < 50) {
			var obstacle = new Obstacle();
			obstacle.x = gridX * GRID_SIZE + GRID_SIZE / 2;
			obstacle.y = gridY * GRID_SIZE + GRID_SIZE / 2;
			game.addChild(obstacle);
			obstacles.push(obstacle);
			cityGrid[gridX][gridY] = 'obstacle';
		}
	}
}
function createGuards() {
	guards = [];
	var guardCount = Math.min(2 + Math.floor(currentLevel / 2), 6);
	for (var i = 0; i < guardCount; i++) {
		var attempts = 0;
		var gridX, gridY;
		do {
			gridX = Math.floor(Math.random() * GRID_WIDTH);
			gridY = Math.floor(Math.random() * GRID_HEIGHT);
			attempts++;
		} while (cityGrid[gridX][gridY] !== 'road' && attempts < 50);
		if (attempts < 50) {
			var guard = new SovietGuard();
			guard.centerX = gridX * GRID_SIZE + GRID_SIZE / 2;
			guard.centerY = gridY * GRID_SIZE + GRID_SIZE / 2;
			guard.x = guard.centerX;
			guard.y = guard.centerY;
			game.addChild(guard);
			guards.push(guard);
			guard.startCircularMovement();
		}
	}
}
function showGroceryStorePopup() {
	// Pause game activity
	isGameActive = false;
	// Show the grocery store
	groceryStore.show();
}
function createBiedronkas() {
	biedronkas = [];
	var biedronkaCount = Math.min(1 + Math.floor(currentLevel / 3), 4);
	for (var i = 0; i < biedronkaCount; i++) {
		var attempts = 0;
		var gridX, gridY;
		do {
			gridX = Math.floor(Math.random() * (GRID_WIDTH - 2)) + 1;
			gridY = Math.floor(Math.random() * (GRID_HEIGHT - 2)) + 1;
			attempts++;
		} while (cityGrid[gridX][gridY] !== 'road' && attempts < 50);
		if (attempts < 50) {
			var biedronka = new BiedronkaShop();
			biedronka.x = gridX * GRID_SIZE;
			biedronka.y = gridY * GRID_SIZE;
			game.addChild(biedronka);
			biedronkas.push(biedronka);
			cityGrid[gridX][gridY] = 'biedronka';
			if (gridX + 1 < GRID_WIDTH) cityGrid[gridX + 1][gridY] = 'biedronka';
		}
	}
}
function createDestination() {
	var attempts = 0;
	var gridX, gridY;
	do {
		gridX = Math.floor(Math.random() * GRID_WIDTH);
		gridY = Math.floor(Math.random() * GRID_HEIGHT);
		attempts++;
	} while (cityGrid[gridX][gridY] !== 'road' && attempts < 100);
	destination = new Destination();
	destination.x = gridX * GRID_SIZE + GRID_SIZE / 2;
	destination.y = gridY * GRID_SIZE + GRID_SIZE / 2;
	destination.gridX = gridX;
	destination.gridY = gridY;
	game.addChild(destination);
	destination.pulse();
	cityGrid[gridX][gridY] = 'destination';
}
function createPlayer() {
	var attempts = 0;
	var gridX, gridY;
	do {
		gridX = Math.floor(Math.random() * GRID_WIDTH);
		gridY = Math.floor(Math.random() * GRID_HEIGHT);
		attempts++;
	} while (cityGrid[gridX][gridY] !== 'road' && attempts < 100);
	player = new Player();
	player.gridX = gridX;
	player.gridY = gridY;
	player.x = gridX * GRID_SIZE + GRID_SIZE / 2;
	player.y = gridY * GRID_SIZE + GRID_SIZE / 2;
	game.addChild(player);
}
function isValidMove(gridX, gridY) {
	if (gridX < 0 || gridX >= GRID_WIDTH || gridY < 0 || gridY >= GRID_HEIGHT) {
		return false;
	}
	var cellType = cityGrid[gridX][gridY];
	return cellType === 'road' || cellType === 'destination' || cellType === 'biedronka';
}
function checkWin() {
	// Check collision with guards
	for (var i = 0; i < guards.length; i++) {
		if (player.intersects(guards[i])) {
			LK.getSound('blocked').play();
			LK.effects.flashScreen(0xff0000, 500);
			isGameActive = false;
			LK.showGameOver();
			return;
		}
	}
	// Check interaction with Biedronka shops
	for (var i = 0; i < biedronkas.length; i++) {
		if (player.intersects(biedronkas[i])) {
			// Add coins for visiting Biedronka
			storage.coins = (storage.coins || 0) + 25;
			// Show grocery store
			showGroceryStorePopup();
			// Give bonus points for visiting Biedronka
			LK.setScore(LK.getScore() + 50);
			scoreTxt.setText('Score: ' + LK.getScore());
			// Flash green to show successful interaction
			LK.effects.flashScreen(0x00ff00, 300);
			// Remove the visited Biedronka
			biedronkas[i].destroy();
			biedronkas.splice(i, 1);
			break;
		}
	}
	if (player.gridX === destination.gridX && player.gridY === destination.gridY) {
		var timeBonus = Math.floor(timeLeft * 10);
		var levelBonus = currentLevel * 100;
		LK.setScore(LK.getScore() + timeBonus + levelBonus);
		LK.getSound('complete').play();
		LK.effects.flashScreen(0x4CAF50, 500);
		currentLevel++;
		if (currentLevel > 10) {
			LK.showYouWin();
		} else {
			initializeLevel();
		}
	}
}
function initializeLevel() {
	for (var i = buildings.length - 1; i >= 0; i--) {
		buildings[i].destroy();
	}
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
	}
	for (var i = guards.length - 1; i >= 0; i--) {
		guards[i].destroy();
	}
	for (var i = biedronkas.length - 1; i >= 0; i--) {
		biedronkas[i].destroy();
	}
	if (destination) destination.destroy();
	if (player) player.destroy();
	buildings = [];
	obstacles = [];
	guards = [];
	biedronkas = [];
	initializeGrid();
	createBuildings();
	createObstacles();
	createGuards();
	createBiedronkas();
	createDestination();
	createPlayer();
	timeLeft = Math.max(30, 80 - currentLevel * 3);
	var historicalPeriod = historicalPeriods[Math.min(currentLevel - 1, historicalPeriods.length - 1)];
	levelTxt.setText(historicalPeriod);
	scoreTxt.setText('Score: ' + LK.getScore());
	timeTxt.setText('Time: ' + timeLeft);
}
function handleMovement(deltaX, deltaY) {
	if (!isGameActive || !gameStarted || player.isMoving) return;
	var newGridX = player.gridX + deltaX;
	var newGridY = player.gridY + deltaY;
	if (isValidMove(newGridX, newGridY)) {
		if (player.moveToGrid(newGridX, newGridY)) {
			checkWin();
		}
	} else {
		LK.getSound('blocked').play();
	}
}
var lastTouchX = 0;
var lastTouchY = 0;
var minSwipeDistance = 20;
game.down = function (x, y, obj) {
	// Check if clicking period selection button
	if (x >= 20 && x <= 20 + 200 && y >= 150 && y <= 200) {
		showPeriodSelection();
		return;
	}
	if (!gameStarted) {
		gameStarted = true;
		initializeLevel();
	}
	lastTouchX = x;
	lastTouchY = y;
};
game.up = function (x, y, obj) {
	if (!gameStarted || !isGameActive) return;
	// Calculate player center position on screen
	var playerCenterX = player.x;
	var playerCenterY = player.y;
	// Calculate direction from player to tap position
	var deltaX = x - playerCenterX;
	var deltaY = y - playerCenterY;
	// Only move if tap is far enough from player center
	if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
		if (Math.abs(deltaX) > Math.abs(deltaY)) {
			handleMovement(deltaX > 0 ? 1 : -1, 0);
		} else {
			handleMovement(0, deltaY > 0 ? 1 : -1);
		}
	}
};
var gameTimer = null;
game.update = function () {
	if (!gameStarted || !isGameActive) return;
	if (LK.ticks % 60 === 0 && timeLeft > 0) {
		timeLeft--;
		timeTxt.setText('Time: ' + timeLeft);
		if (timeLeft <= 0) {
			isGameActive = false;
			LK.showGameOver();
		}
	}
};
var isPeriodSelectionActive = false;
var periodSelectionElements = [];
function showPeriodSelection() {
	isPeriodSelectionActive = true;
	// Create background
	var selectionBg = LK.getAsset('road', {
		scaleX: 15,
		scaleY: 20,
		x: 1024,
		y: 1366,
		anchorX: 0.5,
		anchorY: 0.5
	});
	selectionBg.alpha = 0.95;
	game.addChild(selectionBg);
	// Title
	var titleText = new Text2('Choose Your Historical Period', {
		size: 70,
		fill: 0xffd700
	});
	titleText.anchor.set(0.5, 0);
	titleText.x = 1024;
	titleText.y = 400;
	game.addChild(titleText);
	// Create period buttons
	var periodsContainer = new Container();
	periodsContainer.x = 1024;
	periodsContainer.y = 800;
	game.addChild(periodsContainer);
	for (var i = 0; i < historicalPeriods.length; i++) {
		var period = historicalPeriods[i];
		var row = Math.floor(i / 2);
		var col = i % 2;
		var buttonBg = LK.getAsset('road', {
			scaleX: 8,
			scaleY: 2,
			x: (col - 0.5) * 600,
			y: row * 120,
			anchorX: 0.5,
			anchorY: 0.5
		});
		buttonBg.alpha = 0.8;
		buttonBg.periodIndex = i;
		periodsContainer.addChild(buttonBg);
		var buttonText = new Text2(period, {
			size: 45,
			fill: 0xffffff
		});
		buttonText.anchor.set(0.5, 0.5);
		buttonText.x = (col - 0.5) * 600;
		buttonText.y = row * 120;
		periodsContainer.addChild(buttonText);
	}
	// Store elements for cleanup
	periodSelectionElements = [selectionBg, titleText, periodsContainer];
	// Handle period selection
	game.down = function (x, y, obj) {
		if (!isPeriodSelectionActive) return;
		var localPos = periodsContainer.toLocal({
			x: x,
			y: y
		});
		var col = Math.round((localPos.x + 300) / 600);
		var row = Math.round(localPos.y / 120);
		var periodIndex = row * 2 + col;
		if (periodIndex >= 0 && periodIndex < historicalPeriods.length) {
			// Set selected period as target
			currentLevel = periodIndex + 1;
			closePeriodSelection();
			startGame();
		}
	};
}
function closePeriodSelection() {
	isPeriodSelectionActive = false;
	if (periodSelectionElements) {
		for (var i = 0; i < periodSelectionElements.length; i++) {
			periodSelectionElements[i].destroy();
		}
		periodSelectionElements = [];
	}
}
function startGame() {
	gameStarted = true;
	initializeLevel();
	// Restore normal game controls
	game.down = function (x, y, obj) {
		// Check if clicking period selection button
		if (x >= 20 && x <= 20 + 200 && y >= 150 && y <= 200) {
			showPeriodSelection();
			return;
		}
		if (!gameStarted) {
			gameStarted = true;
			initializeLevel();
		}
		lastTouchX = x;
		lastTouchY = y;
	};
	game.up = function (x, y, obj) {
		if (!gameStarted || !isGameActive) return;
		// Calculate player center position on screen
		var playerCenterX = player.x;
		var playerCenterY = player.y;
		// Calculate direction from player to tap position
		var deltaX = x - playerCenterX;
		var deltaY = y - playerCenterY;
		// Only move if tap is far enough from player center
		if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
			if (Math.abs(deltaX) > Math.abs(deltaY)) {
				handleMovement(deltaX > 0 ? 1 : -1, 0);
			} else {
				handleMovement(0, deltaY > 0 ? 1 : -1);
			}
		}
	};
}
var instructionTxt = new Text2('Swipe to move through time\nTap to begin', {
	size: 50,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = 1024;
instructionTxt.y = 1366;
game.addChild(instructionTxt);
// Create period selection button
var periodButton = new Text2('Choose Period', {
	size: 45,
	fill: 0xffd700
});
periodButton.anchor.set(0, 0);
periodButton.x = 20;
periodButton.y = 150;
LK.gui.topLeft.addChild(periodButton);
// Initial game setup
game.down = function (x, y, obj) {
	if (!gameStarted && !isPeriodSelectionActive) {
		instructionTxt.destroy();
		gameStarted = true;
		initializeLevel();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -222,11 +222,16 @@
 			lastTouchY = y;
 		};
 		game.up = function (x, y, obj) {
 			if (!gameStarted || !isGameActive) return;
-			var deltaX = x - lastTouchX;
-			var deltaY = y - lastTouchY;
-			if (Math.abs(deltaX) > minSwipeDistance || Math.abs(deltaY) > minSwipeDistance) {
+			// Calculate player center position on screen
+			var playerCenterX = player.x;
+			var playerCenterY = player.y;
+			// Calculate direction from player to tap position
+			var deltaX = x - playerCenterX;
+			var deltaY = y - playerCenterY;
+			// Only move if tap is far enough from player center
+			if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
 				if (Math.abs(deltaX) > Math.abs(deltaY)) {
 					handleMovement(deltaX > 0 ? 1 : -1, 0);
 				} else {
 					handleMovement(0, deltaY > 0 ? 1 : -1);
@@ -589,9 +594,9 @@
 	}
 }
 var lastTouchX = 0;
 var lastTouchY = 0;
-var minSwipeDistance = 50;
+var minSwipeDistance = 20;
 game.down = function (x, y, obj) {
 	// Check if clicking period selection button
 	if (x >= 20 && x <= 20 + 200 && y >= 150 && y <= 200) {
 		showPeriodSelection();
@@ -605,11 +610,16 @@
 	lastTouchY = y;
 };
 game.up = function (x, y, obj) {
 	if (!gameStarted || !isGameActive) return;
-	var deltaX = x - lastTouchX;
-	var deltaY = y - lastTouchY;
-	if (Math.abs(deltaX) > minSwipeDistance || Math.abs(deltaY) > minSwipeDistance) {
+	// Calculate player center position on screen
+	var playerCenterX = player.x;
+	var playerCenterY = player.y;
+	// Calculate direction from player to tap position
+	var deltaX = x - playerCenterX;
+	var deltaY = y - playerCenterY;
+	// Only move if tap is far enough from player center
+	if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
 		if (Math.abs(deltaX) > Math.abs(deltaY)) {
 			handleMovement(deltaX > 0 ? 1 : -1, 0);
 		} else {
 			handleMovement(0, deltaY > 0 ? 1 : -1);
@@ -726,8 +736,25 @@
 		}
 		lastTouchX = x;
 		lastTouchY = y;
 	};
+	game.up = function (x, y, obj) {
+		if (!gameStarted || !isGameActive) return;
+		// Calculate player center position on screen
+		var playerCenterX = player.x;
+		var playerCenterY = player.y;
+		// Calculate direction from player to tap position
+		var deltaX = x - playerCenterX;
+		var deltaY = y - playerCenterY;
+		// Only move if tap is far enough from player center
+		if (Math.abs(deltaX) > 30 || Math.abs(deltaY) > 30) {
+			if (Math.abs(deltaX) > Math.abs(deltaY)) {
+				handleMovement(deltaX > 0 ? 1 : -1, 0);
+			} else {
+				handleMovement(0, deltaY > 0 ? 1 : -1);
+			}
+		}
+	};
 }
 var instructionTxt = new Text2('Swipe to move through time\nTap to begin', {
 	size: 50,
 	fill: 0xFFFFFF