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

/**** 
* Classes
****/ 
var Bullet = Container.expand(function (initialSpeed) {
	var self = Container.call(this);
	// Added initialSpeed parameter
	//Create and attach asset.
	self.visual = self.attachAsset('bullet', {
		// Uses the existing 'bullet' image asset
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = initialSpeed; // Use the passed initialSpeed for movement
	// If this instance of bullet is attached, this method will be called every tick by the LK engine automatically.
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Coin collectible class (was PointCollectible)
var CoinCollectible = Container.expand(function () {
	var self = Container.call(this);
	var coin = self.attachAsset('coin_icon', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Player character controlled by face
var FaceChar = Container.expand(function () {
	var self = Container.call(this);
	var _char = self.attachAsset('faceChar', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// For possible future effects
	self.flash = function () {
		LK.effects.flashObject(self, 0xffffff, 300);
	};
	return self;
});
var Gun = Container.expand(function () {
	var self = Container.call(this);
	// The visual asset for the gun
	self.visual = self.attachAsset('gun_visual', {
		anchorX: 0.5,
		// Anchor to its horizontal center
		anchorY: 1.0 // Anchor to its bottom edge (base of the gun)
	});
	return self;
});
// Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obs = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Speed is set on creation
	self.speed = 0;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
// Shop class for purchasing items
var Shop = Container.expand(function () {
	var self = Container.call(this);
	var items = [{
		name: "Speed Boost",
		cost: 10
	}, {
		name: "Extra Life",
		cost: 20
	}, {
		name: "Shield",
		cost: 15
	}];
	var shopText = new Text2("Shop", {
		size: 100,
		fill: 0xFFFFFF
	});
	shopText.anchor.set(0.5, 0);
	self.addChild(shopText);
	shopText.y = -200;
	// Show current persistent points
	var pointsText = new Text2("", {
		size: 70,
		fill: 0xFFFF00
	});
	pointsText.anchor.set(0.5, 0);
	pointsText.y = -100;
	self.addChild(pointsText);
	function updatePointsText() {
		var totalPoints = 0;
		var extraLives = 0;
		var shields = 0;
		if (typeof storage !== "undefined") {
			totalPoints = storage.totalPoints || 0;
			extraLives = typeof storage.extraLives !== "undefined" ? storage.extraLives : 3;
			shields = storage.shields || 0;
		}
		pointsText.setText("Points: " + totalPoints + " | Extra Lives: " + extraLives + " | Shields: " + shields);
		// Also update global scoreTxt if shop is open
		if (typeof scoreTxt !== "undefined") {
			scoreTxt.setText(totalPoints);
		}
	}
	updatePointsText();
	// Add shop items and purchase logic
	items.forEach(function (item, index) {
		var itemText = new Text2(item.name + " - " + item.cost + " points", {
			size: 70,
			fill: 0xFFFFFF
		});
		itemText.anchor.set(0.5, 0);
		itemText.y = index * 100;
		self.addChild(itemText);
		// Enable purchase on tap/click
		itemText.interactive = true;
		itemText.buttonMode = true;
		itemText.down = function (x, y, obj) {
			var totalPoints = 0;
			if (typeof storage !== "undefined") {
				totalPoints = storage.totalPoints || 0;
			}
			if (totalPoints >= item.cost) {
				// Deduct cost and update storage
				totalPoints -= item.cost;
				if (typeof storage !== "undefined") {
					storage.totalPoints = totalPoints;
				}
				updatePointsText();
				if (typeof updatePersistentPointsDisplay === "function") {
					updatePersistentPointsDisplay();
				}
				// Show feedback (flash)
				LK.effects.flashObject(itemText, 0x00FF00, 400);
				// Apply item effect in game
				if (item.name === "Extra Life") {
					// Give player an extra life (persist for next game)
					if (typeof storage !== "undefined") {
						var extraLives = storage.extraLives || 0;
						storage.extraLives = extraLives + 1;
						if (typeof updateLivesDisplay === "function") {
							updateLivesDisplay();
						} // Update heart icons UI
						// updatePointsText(); // This is already called after storage.totalPoints update, which also updates lives text in shop
					}
				}
				if (item.name === "Shield") {
					// Give player a shield (persist for next game)
					if (typeof storage !== "undefined") {
						var shields = storage.shields || 0;
						storage.shields = shields + 1;
					}
				}
				// Optionally: disable item after purchase (one-time buy)
				// itemText.alpha = 0.5;
				// itemText.interactive = false;
			} else {
				// Not enough points, flash red
				LK.effects.flashObject(itemText, 0xFF0000, 400);
			}
		};
	});
	return self;
});

/**** 
* Initialize Game
****/ 
// 
var game = new LK.Game({
	backgroundColor: 0x181c2c
});

/**** 
* Game Code
****/ 
// Level variables
var currentLevel = 1;
var levelText;
var levelUpInterval = 30 * 60; // Level up every 30 seconds (1800 ticks)
var lastLevelUpTick = 0;
// Show shop on demand (e.g. after game over or via button)
// --- Shop display ---
// Asset for life display
// New asset for Kimchi
function showShop() {
	var shop = new Shop();
	// Center shop based on its size
	shop.x = GAME_W / 2;
	shop.y = GAME_H / 2;
	shop.anchorX = 0.5;
	shop.anchorY = 0.5;
	game.addChild(shop);
	// Bring shop to top (after all gameplay elements)
	if (shop.parent && shop.parent.children) {
		shop.parent.removeChild(shop);
		shop.parent.addChild(shop);
	}
	// Remove shop after 5 seconds
	LK.setTimeout(function () {
		if (shop && shop.parent) {
			shop.destroy();
		}
	}, 5000);
}
// --- Main Menu Overlay ---
var mainMenuOverlay;
function showMainMenu() {
	// Prevent duplicate overlays
	if (mainMenuOverlay && mainMenuOverlay.parent) return;
	mainMenuOverlay = new Container();
	// Semi-transparent background
	var bg = LK.getAsset('centerCircle', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 30,
		scaleY: 40,
		x: GAME_W / 2,
		y: GAME_H / 2,
		tint: 0x000000
	});
	bg.alpha = 0.7;
	mainMenuOverlay.addChild(bg);
	// Game Title
	var title = new Text2("Ana Menü", {
		size: 180,
		fill: 0xFFF700
	});
	title.anchor.set(0.5, 0.5);
	title.x = GAME_W / 2;
	title.y = GAME_H / 2 - 350;
	mainMenuOverlay.addChild(title);
	// Start Button
	var startBtn = new Text2("Başla", {
		size: 140,
		fill: 0xFFFFFF
	});
	startBtn.anchor.set(0.5, 0.5);
	startBtn.x = GAME_W / 2;
	startBtn.y = GAME_H / 2 + 100;
	startBtn.interactive = true;
	startBtn.buttonMode = true;
	startBtn.down = function (x, y, obj) {
		if (mainMenuOverlay && mainMenuOverlay.parent) {
			mainMenuOverlay.destroy();
		}
		// Activate gameplay
		gameActive = true;
		// Reset timer for new session
		gameStartTime = LK.ticks;
		lastLevelUpTick = LK.ticks; // Initialize level timer with current game ticks
		elapsedSeconds = 0;
		if (elapsedTimeText) {
			elapsedTimeText.setText('Time: 0s');
		}
		// Optionally, reset other game state here if needed
	};
	mainMenuOverlay.addChild(startBtn);
	// Optionally, add instructions
	var info = new Text2("Ekrana tıklayarak ateş et\nYüzünü hareket ettirerek karakteri kontrol et", {
		size: 70,
		fill: 0xFFFFFF
	});
	info.anchor.set(0.5, 0.5);
	info.x = GAME_W / 2;
	info.y = GAME_H / 2 + 300;
	mainMenuOverlay.addChild(info);
	game.addChild(mainMenuOverlay);
}
// --- Gameplay lock until Başla is pressed ---
var gameActive = false; // Only true after Başla is pressed
// Show main menu at game start
LK.setTimeout(function () {
	showMainMenu();
}, 10);
// Timer variables
var elapsedTimeText;
var gameStartTime = 0; // To store LK.ticks at the start of the game
var elapsedSeconds = 0; // To store the calculated elapsed seconds
// Obstacle: red rectangle
// Character: main player controlled by face
// Game area dimensions
var GAME_W = 2048;
var GAME_H = 2732;
// Player character
var faceChar = new FaceChar();
game.addChild(faceChar);
// Create and add the gun
gun = new Gun();
game.addChild(gun);
// Initial position: bottom center, 400px from bottom
faceChar.x = GAME_W / 2;
faceChar.y = GAME_H - 400;
// Arrays for obstacles and points
var obstacles = [];
var points = [];
var gun; // Gun instance
var bullets = []; // Array to store active bullets
// Score display
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFF700
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Level Display
levelText = new Text2('Level: 1', {
	size: 80,
	fill: 0xADD8E6 // A nice light blue color for the level text
});
levelText.anchor.set(0, 0); // Anchor to its own top-left
LK.gui.topLeft.addChild(levelText);
// Position it carefully in the top-left, avoiding the 100x100px menu icon area
levelText.x = 110; // 100px for menu icon + 10px padding
levelText.y = 20; // 20px from the top edge of the screen
// Persistent Currency ("Para") Display will be initialized by updatePersistentPointsDisplay
// Lives display elements
var livesContainer = new Container();
LK.gui.topRight.addChild(livesContainer); // Add to top-right GUI area
// livesContainer.anchor.set(1, 0); // Removed: Containers do not have an 'anchor' property for self-positioning.
livesContainer.x = -30; // Position 30px from the screen's right edge (relative to gui.topRight)
livesContainer.y = 30; // Position 30px from the screen's top edge (relative to gui.topRight)
var heartIcons = []; // Array to keep track of heart icon objects
function updateLivesDisplay() {
	// Clear previously displayed hearts
	heartIcons.forEach(function (icon) {
		if (icon && icon.parent) {
			// Check if icon exists and is attached
			icon.destroy();
		}
	});
	heartIcons = []; // Reset the array
	var currentLives = 0;
	// storage.extraLives is initialized by game logic (e.g., to 3 at game start/reset)
	// before this function is typically called.
	if (typeof storage !== "undefined" && typeof storage.extraLives === "number") {
		currentLives = storage.extraLives;
	}
	// If storage.extraLives were somehow not a number here, 0 hearts would be displayed,
	// accurately reflecting an issue with the life count data, rather than masking it.
	// Optionally cap the number of hearts displayed to avoid UI clutter
	var displayableLives = Math.min(currentLives, 5); // e.g., display max 5 hearts
	for (var i = 0; i < displayableLives; i++) {
		var heart = LK.getAsset('heart_icon', {
			anchorX: 1,
			anchorY: 0.5
		}); // Anchor heart's right-middle
		if (heart) {
			// Position hearts horizontally from right to left within the livesContainer
			// The rightmost heart (i=0) is at x=0 relative to container's (anchored) right edge
			heart.x = -i * (heart.width + 10); // 10px spacing between hearts
			heart.y = heart.height / 2; // Vertically center hearts in the container
			livesContainer.addChild(heart);
			heartIcons.push(heart);
		}
	}
}
// For keeping track of score
// Load score from storage if available (after game over)
var score = 0;
if (typeof storage !== "undefined") {
	// Use lastScore for current run, totalPoints for shop
	var lastScore = storage.lastScore;
	if (typeof lastScore === "number" && !isNaN(lastScore)) {
		score = lastScore;
		LK.setScore(score);
	}
	// Ensure extraLives, shields and totalPoints are defined
	if (typeof storage.extraLives === "undefined" || storage.extraLives === 0) {
		storage.extraLives = 3;
	}
	if (typeof storage.shields === "undefined") {
		storage.shields = 0;
	}
	if (typeof storage.totalPoints === "undefined") {
		storage.totalPoints = 0;
	} // Ensure totalPoints is initialized
	updateLivesDisplay(); // Initialize hearts display
	if (typeof updatePersistentPointsDisplay === "function") {
		updatePersistentPointsDisplay();
	} // Initialize Para display
}
// Elapsed Time Display
elapsedTimeText = new Text2('Time: 0s', {
	size: 70,
	fill: 0xFFFFFF // White color for the text
});
elapsedTimeText.anchor.set(0, 1); // Anchor to the bottom-left of the text
LK.gui.bottomLeft.addChild(elapsedTimeText);
// Position it 30px from the left and 30px from the bottom of the screen
elapsedTimeText.x = 30;
elapsedTimeText.y = -30;
// Initialize timer variables for the current game session
gameStartTime = LK.ticks;
elapsedSeconds = 0;
elapsedTimeText.setText('Time: ' + elapsedSeconds + 's'); // Set initial text
// For obstacle/point spawn timing
var lastObstacleTick = 0;
var lastPointTick = 0;
var lastShotTick = 0; // Tracks the game tick of the last shot
var fireCooldownTicks = 60; // Minimum ticks between shots (60 ticks = 1 second at 60 FPS)
var initialBulletSpeed = -30; // Base speed for bullets at level 1
var bulletSpeedIncrementPerLevel = 2; // How much faster (more negative) bullets get per level
// For difficulty scaling
var minObstacleInterval = 45; // ticks
var minPointInterval = 60; // ticks
var obstacleSpeed = 12; // px per frame, increases over time
// For collision state
var lastCollided = false;
// For point collection state
var lastPointCollided = {};
// Facekit smoothing
var lastFaceX = faceChar.x;
var lastFaceY = faceChar.y;
// Persistent currency display
var persistentPointsContainer;
var persistentPointsText;
var persistentCoinIcon;
function updatePersistentPointsDisplay() {
	var spacing = 15; // Spacing between text and icon
	// Ensure container exists and is on GUI
	if (!persistentPointsContainer) {
		persistentPointsContainer = new Container();
		LK.gui.topRight.addChild(persistentPointsContainer); // Attach to top-right
		persistentPointsContainer.x = -30; // Position 30px from the screen's right edge
		persistentPointsContainer.y = 140; // Position below lives display (lives at y=30, hearts ~70px high)
	}
	// Ensure Text2 object for points exists
	if (!persistentPointsText) {
		persistentPointsText = new Text2("Coin: 0", {
			size: 70,
			fill: 0xFFFF00
		});
		persistentPointsText.anchor.set(1, 0.5); // Anchor right-middle for positioning
	}
	// Ensure text is child of container
	if (persistentPointsText.parent !== persistentPointsContainer) {
		if (persistentPointsText.parent) {
			persistentPointsText.parent.removeChild(persistentPointsText);
		}
		persistentPointsContainer.addChild(persistentPointsText);
	}
	// Ensure coin icon asset exists
	if (!persistentCoinIcon) {
		persistentCoinIcon = LK.getAsset('coin_icon', {
			// width/height will come from asset definition in Assets section
			anchorX: 1,
			// Anchor right
			anchorY: 0.5 // Anchor middle for vertical alignment with text
		});
	}
	// Ensure icon is child of container
	if (persistentCoinIcon.parent !== persistentPointsContainer) {
		if (persistentCoinIcon.parent) {
			persistentCoinIcon.parent.removeChild(persistentCoinIcon);
		}
		persistentPointsContainer.addChild(persistentCoinIcon);
	}
	// Update text content
	var currentPoints = 0;
	if (typeof storage !== "undefined" && typeof storage.totalPoints === "number") {
		currentPoints = storage.totalPoints;
	}
	persistentPointsText.setText("Coin: " + currentPoints);
	// Position text and icon within the container for right alignment.
	// The container's top-left is positioned by persistentPointsContainer.x and .y relative to LK.gui.topRight.
	// Children x,y are relative to the container's top-left.
	// persistentCoinIcon is rightmost. Its anchor (1, 0.5) means its right-middle point is at its x,y.
	// We position its right-middle point at (0,0) relative to container's origin (top-left).
	persistentCoinIcon.x = 0;
	persistentCoinIcon.y = 0; // Vertically centered due to anchorY 0.5 and container's y
	// persistentPointsText is to the left. Its anchor (1, 0.5) means its right-middle point is at its x,y.
	// We position its right-middle point to be (persistentCoinIcon.width + spacing) to the left of the icon's right-middle.
	persistentPointsText.x = -(persistentCoinIcon.width + spacing);
	persistentPointsText.y = 0; // Vertically centered due to anchorY 0.5 and container's y
}
// Handle screen tap to fire bullets
game.down = function (x, y, obj) {
	if (!gameActive) return; // Prevent firing if game not started
	// Check cooldown: If current time (LK.ticks) minus last shot time is less than the cooldown period, do nothing.
	if (LK.ticks - lastShotTick < fireCooldownTicks) {
		return; // Still in cooldown period, prevent firing
	}
	if (gun && gun.visual && faceChar) {
		// Ensure gun, its visual, and character exist
		var currentBulletSpeed = initialBulletSpeed - (currentLevel - 1) * bulletSpeedIncrementPerLevel;
		var newBullet = new Bullet(currentBulletSpeed);
		newBullet.x = gun.x;
		// Gun's anchorY is 1.0 (bottom). gun.y is its base.
		// Gun's tip is gun.y - gun.visual.height.
		// Bullet's anchorY is 0.5 (center).
		newBullet.y = gun.y - gun.visual.height;
		// Initialize lastY for off-screen detection logic
		newBullet.lastY = newBullet.y;
		bullets.push(newBullet);
		game.addChild(newBullet);
		lastShotTick = LK.ticks; // Update the time of the last shot
		// Optional: Play a shooting sound if an asset 'shoot' is available
		// if (LK.getSound('shoot')) {
		//     LK.getSound('shoot').play();
		// }
	}
};
// Main update loop
game.update = function () {
	if (!gameActive) return; // Block all gameplay updates until Başla is pressed
	// --- Timer Update ---
	// Calculate total elapsed seconds since the game started
	var currentTotalSeconds = Math.floor((LK.ticks - gameStartTime) / 60);
	// Update the text only if the number of seconds has changed
	if (currentTotalSeconds !== elapsedSeconds) {
		elapsedSeconds = currentTotalSeconds;
		if (elapsedTimeText) {
			// Check if the text object exists
			elapsedTimeText.setText('Time: ' + elapsedSeconds + 's');
		}
	}
	// --- Level Progression ---
	if (LK.ticks - lastLevelUpTick > levelUpInterval) {
		currentLevel++;
		if (levelText) {
			levelText.setText('Level: ' + currentLevel);
		}
		lastLevelUpTick = LK.ticks;
		// Increase difficulty with the new level
		obstacleSpeed += 1.0; // Make obstacles faster
		// Decrease spawn intervals (more frequent spawns), but with a minimum cap
		if (minObstacleInterval > 15) {
			// Don't let obstacles spawn too frenetically
			minObstacleInterval -= 2;
		}
		if (minPointInterval > 20) {
			// Same for points/coins
			minPointInterval -= 2;
		}
		// Optional: Cap the maximum obstacle speed to prevent it from becoming unplayably fast
		if (obstacleSpeed > 40) {
			obstacleSpeed = 40;
		}
		// You could add other effects or difficulty adjustments here when a new level is reached!
	}
	// --- Facekit control ---
	// Use mouthCenter for X/Y, clamp to game area
	var fx = facekit.mouthCenter && typeof facekit.mouthCenter.x === "number" ? facekit.mouthCenter.x : GAME_W / 2;
	var fy = facekit.mouthCenter && typeof facekit.mouthCenter.y === "number" ? facekit.mouthCenter.y : GAME_H - 400;
	// Optionally, if mouth is open, move faster (boost)
	var boost = facekit.mouthOpen ? 1.7 : 1.0;
	// Smooth movement (lerp)
	lastFaceX += (fx - lastFaceX) * 0.25 * boost;
	lastFaceY += (fy - lastFaceY) * 0.25 * boost;
	// Clamp to bounds (keep inside screen)
	var charW = faceChar.width;
	var charH = faceChar.height;
	var minX = charW / 2 + 40;
	var maxX = GAME_W - charW / 2 - 40;
	var minY = charH / 2 + 120;
	var maxY = GAME_H - charH / 2 - 40;
	faceChar.x = Math.max(minX, Math.min(maxX, lastFaceX));
	faceChar.y = Math.max(minY, Math.min(maxY, lastFaceY));
	// --- Spawn obstacles ---
	// Update gun position to follow faceChar
	if (gun && faceChar) {
		gun.x = faceChar.x;
		// Position the base of the gun (anchorY = 1.0) at the top edge of faceChar
		gun.y = faceChar.y - faceChar.height / 2;
	}
	// --- Manage Bullets ---
	for (var k = bullets.length - 1; k >= 0; k--) {
		var bullet = bullets[k];
		// Initialize lastY for tracking changes on Y if not already done (e.g. if not set at creation)
		if (bullet.lastY === undefined) {
			bullet.lastY = bullet.y;
		}
		// bullet.update(); // Bullet's own update method is called automatically by LK engine if bullet is added to game stage
		// Off-Screen Detection (top of screen)
		// A bullet's y is its center (anchorY: 0.5).
		// It's off-screen if its center y is < -(bullet.visual.height / 2).
		var bulletHeight = bullet.visual ? bullet.visual.height : 50; // Fallback height
		var offScreenThreshold = -(bulletHeight / 2) - 10; // Add a small buffer beyond the edge
		if (bullet.y < offScreenThreshold) {
			// More robust check: if it *crossed* the boundary in this frame
			if (bullet.lastY >= offScreenThreshold) {
				bullet.destroy(); // Destroy can only be called from the main 'Game' class
				bullets.splice(k, 1);
				continue; // Skip further processing for this bullet
			} else if (bullet.y < -GAME_H) {
				// Failsafe: if it's way off screen (e.g. due to lag/teleport)
				bullet.destroy();
				bullets.splice(k, 1);
				continue;
			}
		}
		bullet.lastY = bullet.y; // Update last known Y position
		// Bullet-Obstacle Collision
		// Iterate through obstacles to check for collision with the current bullet
		for (var obs_idx = obstacles.length - 1; obs_idx >= 0; obs_idx--) {
			var obstacle = obstacles[obs_idx];
			// Ensure the bullet still exists and is part of the game scene.
			// This check is important because the bullet might have been destroyed by off-screen logic
			// or by a previous collision in this same frame if multiple collisions were possible.
			if (!bullet || !bullet.parent) {
				// If bullet is no longer valid (e.g., already destroyed and removed from its parent container),
				// then stop checking it against further obstacles.
				break;
			}
			// Ensure the obstacle also still exists and is part of the game scene.
			if (obstacle && obstacle.parent && bullet.intersects(obstacle)) {
				// Collision detected!
				// Destroy the obstacle
				obstacle.destroy();
				obstacles.splice(obs_idx, 1);
				// Award points for destroying obstacle
				score += 5;
				LK.setScore(score);
				if (scoreTxt) {
					scoreTxt.setText(score);
				}
				// Destroy the bullet
				bullet.destroy();
				bullets.splice(k, 1); // k is the index from the outer bullets loop
				// Since this bullet has been destroyed, break from iterating through more obstacles for it.
				// The outer loop (for bullets) will correctly handle the modified bullets array due to the splice.
				break;
			}
		}
		// End of Bullet-Obstacle Collision logic for the current bullet
	}
	// --- Spawn obstacles ---
	if (LK.ticks - lastObstacleTick > minObstacleInterval + Math.floor(Math.random() * 40)) {
		var obs = new Obstacle();
		// Random X, avoid leftmost 100px (menu)
		var obsW = obs.width;
		var obsX = 100 + obsW / 2 + Math.random() * (GAME_W - obsW - 200);
		obs.x = obsX;
		obs.y = -obs.height / 2;
		obs.speed = obstacleSpeed + Math.random() * 3;
		obstacles.push(obs);
		game.addChild(obs);
		lastObstacleTick = LK.ticks;
	}
	// --- Spawn points ---
	if (LK.ticks - lastPointTick > minPointInterval + Math.floor(Math.random() * 60)) {
		var pt = new CoinCollectible();
		var ptW = pt.width;
		var ptX = 100 + ptW / 2 + Math.random() * (GAME_W - ptW - 200);
		pt.x = ptX;
		pt.y = -pt.height / 2;
		pt.speed = obstacleSpeed * 0.8 + Math.random() * 2;
		points.push(pt);
		game.addChild(pt);
		lastPointTick = LK.ticks;
	}
	// --- Move obstacles, check collision ---
	var collided = false;
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var o = obstacles[i];
		o.update();
		// Off screen
		if (o.y - o.height / 2 > GAME_H + 100) {
			o.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision with player
		if (faceChar.intersects(o)) {
			collided = true;
		}
	}
	// --- Move points, check collection ---
	for (var j = points.length - 1; j >= 0; j--) {
		var p = points[j];
		p.update();
		// Off screen
		if (p.y - p.height / 2 > GAME_H + 100) {
			p.destroy();
			points.splice(j, 1);
			continue;
		}
		// Collision with player
		var pointId = p._lkid || p._id || j;
		if (!lastPointCollided[pointId]) {
			if (faceChar.intersects(p)) {
				// Collect point
				score += 1;
				LK.setScore(score);
				scoreTxt.setText(score);
				// Flash effect
				LK.effects.flashObject(p, 0xffffff, 200);
				p.destroy();
				points.splice(j, 1);
				lastPointCollided[pointId] = true;
				continue;
			}
		}
	}
	// --- Collision state transitions ---
	if (!lastCollided && collided) {
		// Check for shield first
		var usedShield = false;
		if (typeof storage !== "undefined" && storage.shields && storage.shields > 0) {
			storage.shields = storage.shields - 1;
			usedShield = true;
			LK.effects.flashScreen(0x00ffff, 600);
			faceChar.flash();
			// Don't trigger game over, just consume shield
		}
		// If no shield, check for extra life
		else if (typeof storage !== "undefined" && storage.extraLives && storage.extraLives > 0) {
			storage.extraLives = storage.extraLives - 1;
			if (typeof updateLivesDisplay === "function") {
				updateLivesDisplay();
			} // Update hearts display
			LK.effects.flashScreen(0x00ff00, 600);
			faceChar.flash();
			// Don't trigger game over, just consume extra life
		}
		// No shield or extra life, trigger game over
		else {
			LK.effects.flashScreen(0xff0000, 800);
			faceChar.flash();
			LK.showGameOver();
			return;
		}
	}
	lastCollided = collided;
	// --- Difficulty scaling ---
	if (LK.ticks % 300 === 0 && obstacleSpeed < 32) {
		obstacleSpeed += 1.2;
		if (minObstacleInterval > 20) {
			minObstacleInterval -= 2;
		}
		if (minPointInterval > 30) {
			minPointInterval -= 2;
		}
	}
};
// --- Instructions text removed ---
// --- Center score text ---
scoreTxt.x = 0;
scoreTxt.y = 20;
// --- Clean up on game over ---
game.on('destroy', function () {
	// Save score to persistent storage before reset
	if (typeof storage !== "undefined") {
		storage.lastScore = score;
		// Only add this run's score to totalPoints if score > 0
		if (score > 0) {
			var totalPoints = storage.totalPoints || 0;
			// Convert 2 game points to 1 Coin
			storage.totalPoints = totalPoints + Math.floor(score / 2);
		}
		if (typeof updatePersistentPointsDisplay === "function") {
			updatePersistentPointsDisplay();
		}
	}
	// Destroy all active bullets
	for (var i_bullet_cleanup = bullets.length - 1; i_bullet_cleanup >= 0; i_bullet_cleanup--) {
		if (bullets[i_bullet_cleanup] && bullets[i_bullet_cleanup].destroy) {
			bullets[i_bullet_cleanup].destroy();
		}
	}
	bullets = [];
	obstacles = [];
	points = [];
	lastPointCollided = {};
	lastCollided = false;
	lastFaceX = GAME_W / 2;
	lastFaceY = GAME_H - 400;
	score = 0;
	LK.setScore(0);
	scoreTxt.setText('0');
	// Reset level variables
	currentLevel = 1;
	if (levelText) {
		levelText.setText('Level: ' + currentLevel);
	}
	// lastLevelUpTick will be reset correctly when the game starts again via the main menu button.
	// Setting to 0 here is a safe default if the game could restart without the menu.
	lastLevelUpTick = 0;
	if (gun) {
		// gun instance is a child of game, so it will be destroyed automatically by LK.
		// We just need to nullify the reference.
		gun = null;
	}
	// Reset lives to 3 for new game
	if (typeof storage !== "undefined") {
		storage.extraLives = 3;
		if (typeof updateLivesDisplay === "function") {
			updateLivesDisplay();
		} // Update hearts display
	}
	// Show shop after game over
	showShop();
	// Reset scoreTxt to show 0 for new game
	if (typeof scoreTxt !== "undefined") {
		scoreTxt.setText('0');
	}
});

===================================================================
--- original.js
+++ change.js
@@ -7,17 +7,18 @@
 
 /**** 
 * Classes
 ****/ 
-var Bullet = Container.expand(function () {
+var Bullet = Container.expand(function (initialSpeed) {
 	var self = Container.call(this);
+	// Added initialSpeed parameter
 	//Create and attach asset.
 	self.visual = self.attachAsset('bullet', {
 		// Uses the existing 'bullet' image asset
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.speed = -30; // Negative speed for upward movement
+	self.speed = initialSpeed; // Use the passed initialSpeed for movement
 	// If this instance of bullet is attached, this method will be called every tick by the LK engine automatically.
 	self.update = function () {
 		self.y += self.speed;
 	};
@@ -412,8 +413,10 @@
 var lastObstacleTick = 0;
 var lastPointTick = 0;
 var lastShotTick = 0; // Tracks the game tick of the last shot
 var fireCooldownTicks = 60; // Minimum ticks between shots (60 ticks = 1 second at 60 FPS)
+var initialBulletSpeed = -30; // Base speed for bullets at level 1
+var bulletSpeedIncrementPerLevel = 2; // How much faster (more negative) bullets get per level
 // For difficulty scaling
 var minObstacleInterval = 45; // ticks
 var minPointInterval = 60; // ticks
 var obstacleSpeed = 12; // px per frame, increases over time
@@ -494,9 +497,10 @@
 		return; // Still in cooldown period, prevent firing
 	}
 	if (gun && gun.visual && faceChar) {
 		// Ensure gun, its visual, and character exist
-		var newBullet = new Bullet();
+		var currentBulletSpeed = initialBulletSpeed - (currentLevel - 1) * bulletSpeedIncrementPerLevel;
+		var newBullet = new Bullet(currentBulletSpeed);
 		newBullet.x = gun.x;
 		// Gun's anchorY is 1.0 (bottom). gun.y is its base.
 		// Gun's tip is gun.y - gun.visual.height.
 		// Bullet's anchorY is 0.5 (center).