/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	coins: 0,
	selectedSkin: "bird",
	unlockedSkins: ["bird"]
});

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	// Get the selected skin
	var selectedSkin = storage.selectedSkin || "bird";
	// Bird asset - use the correct asset based on the selected skin
	var birdGraphics = self.attachAsset(selectedSkin, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3.5,
		scaleY: 3.5
	});
	// Set special flag for rainbow bird
	if (selectedSkin === "rainbow_bird") {
		self.isRainbow = true; // Will be handled in update
	}
	// Bird physics properties
	self.velocityY = 0;
	self.velocityX = 12; // Increased from 8 to 12 for faster horizontal movement
	self.gravity = 1.0; // Increased from 0.7 to 1.0 for stronger gravity
	self.flapStrength = -20; // Increased from -15 to -20 for higher jumps
	self.lastX = 0;
	self.lastY = 0;
	self.lastWasIntersecting = false;
	// Handle tap/click on bird
	self.down = function (x, y, obj) {
		self.flap();
	};
	// Make bird flap wings
	self.flap = function () {
		self.velocityY = self.flapStrength;
	};
	// Update bird physics
	self.update = function () {
		// Store last position
		self.lastX = self.x;
		self.lastY = self.y;
		// Apply gravity
		self.velocityY += self.gravity;
		// Update position
		self.y += self.velocityY;
		self.x += self.velocityX;
		// Visual feedback - rotate bird based on velocity
		var targetRotation = Math.min(Math.max(self.velocityY / 15, -0.5), 0.5);
		// Make bird face the direction it's flying by flipping the sprite
		if (self.velocityX > 0) {
			birdGraphics.scaleX = Math.abs(birdGraphics.scaleX); // Face right
			birdGraphics.rotation = targetRotation; // Apply rotation normally for right-facing bird
		} else {
			birdGraphics.scaleX = -Math.abs(birdGraphics.scaleX); // Face left
			birdGraphics.rotation = -targetRotation; // Invert rotation for left-facing bird
		}
		// Rainbow effect is now handled by the rainbow bird asset
		// We can still animate it slightly for visual effect
		if (self.isRainbow) {
			// Apply subtle visual effects for rainbow bird
			var pulseAmount = Math.sin(LK.ticks / 10) * 0.1;
			self.children[0].scale.set(3.5 + pulseAmount, 3.5 + pulseAmount);
		}
	};
	return self;
});
var Seed = Container.expand(function () {
	var self = Container.call(this);
	// Seed asset
	var seedGraphics = self.attachAsset('seed', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3.5,
		scaleY: 3.5
	});
	// Seed properties
	self.lastWasIntersecting = false;
	self.speedX = 0; // Set speed to 0 to stop seeds from moving
	// Animation effect
	self.update = function () {
		// No longer updating x position
		seedGraphics.rotation += 0.05;
		// Remove seeds that are off-screen
		if (self.x < -50) {
			self.shouldBeRemoved = true;
		}
	};
	return self;
});
var ShopScreen = Container.expand(function () {
	var self = Container.call(this);
	// Background panel
	var panel = self.attachAsset('shape', {
		width: 1800,
		height: 2200,
		color: 0x4682B4,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	panel.alpha = 0.9;
	// Title
	var titleText = new Text2('SKIN SHOP', {
		size: 120,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0);
	titleText.x = 0;
	titleText.y = -950;
	self.addChild(titleText);
	// Coins display
	var coinsText = new Text2('Coins: ' + storage.coins, {
		size: 80,
		fill: 0xFFD700
	});
	coinsText.anchor.set(0.5, 0);
	coinsText.x = 0;
	coinsText.y = -800;
	self.addChild(coinsText);
	// Skins configuration
	var skins = [{
		id: "bird",
		name: "Default Bird",
		price: 0,
		x: -500,
		y: -500
	}, {
		id: "red_bird",
		name: "Red Bird",
		price: 20,
		x: 0,
		y: -500
	}, {
		id: "gold_bird",
		name: "Gold Bird",
		price: 40,
		x: 500,
		y: -500
	}, {
		id: "blue_bird",
		name: "Blue Bird",
		price: 60,
		x: -500,
		y: 0
	}, {
		id: "green_bird",
		name: "Green Bird",
		price: 80,
		x: 0,
		y: 0
	}, {
		id: "rainbow_bird",
		name: "Rainbow Bird",
		price: 100,
		x: 500,
		y: 0
	}];
	// Selected skin indicator
	var selectedIndicator = self.attachAsset('shape', {
		width: 350,
		height: 350,
		color: 0xFFD700,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	selectedIndicator.alpha = 0.5;
	selectedIndicator.visible = false;
	// Skin buttons
	var skinButtons = [];
	for (var i = 0; i < skins.length; i++) {
		createSkinButton(skins[i]);
	}
	function createSkinButton(skin) {
		var button = new Container();
		// Button background
		var bg = button.attachAsset('shape', {
			width: 300,
			height: 300,
			color: 0x87CEEB,
			shape: 'box',
			anchorX: 0.5,
			anchorY: 0.5
		});
		// Bird icon using the specific skin asset
		var birdIcon = button.attachAsset(skin.id, {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 2,
			scaleY: 2
		});
		// Set rainbow flag if needed
		if (skin.id === "rainbow_bird") {
			button.isRainbow = true;
		}
		// Price/status text
		var priceText = new Text2(skin.price === 0 ? "FREE" : skin.price + " coins", {
			size: 40,
			fill: 0xFFFFFF
		});
		priceText.anchor.set(0.5, 0);
		priceText.y = 80;
		button.addChild(priceText);
		// Set button position
		button.x = skin.x;
		button.y = skin.y;
		button.skinId = skin.id;
		button.skinName = skin.name;
		button.price = skin.price;
		// Check if skin is unlocked
		var unlockedSkins = storage.unlockedSkins || ["bird"];
		if (unlockedSkins.indexOf(skin.id) !== -1) {
			button.isUnlocked = true;
			priceText.setText("UNLOCKED");
		} else {
			button.isUnlocked = false;
		}
		// Handle button click
		button.down = function (x, y, obj) {
			if (button.isUnlocked) {
				// Select this skin
				storage.selectedSkin = button.skinId;
				self.updateSelectedIndicator();
				if (self.onSkinSelected) {
					self.onSkinSelected(button.skinId);
				}
			} else if (storage.coins >= button.price) {
				// Buy this skin
				storage.coins -= button.price;
				if (!storage.unlockedSkins) {
					storage.unlockedSkins = ["bird"];
				}
				storage.unlockedSkins.push(button.skinId);
				button.isUnlocked = true;
				priceText.setText("UNLOCKED");
				coinsText.setText("Coins: " + storage.coins);
			}
		};
		self.addChild(button);
		skinButtons.push(button);
		return button;
	}
	// Close button
	var closeButton = new Container();
	var closeBg = closeButton.attachAsset('shape', {
		width: 500,
		height: 120,
		color: 0xFF0000,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	var closeText = new Text2('CLOSE', {
		size: 80,
		fill: 0xFFFFFF
	});
	closeText.anchor.set(0.5, 0.5);
	closeButton.addChild(closeText);
	closeButton.x = 0;
	closeButton.y = 800;
	closeButton.down = function () {
		if (self.onClose) {
			self.onClose();
		}
	};
	self.addChild(closeButton);
	// Update which skin is selected
	self.updateSelectedIndicator = function () {
		var currentSkin = storage.selectedSkin || "bird";
		for (var i = 0; i < skinButtons.length; i++) {
			if (skinButtons[i].skinId === currentSkin) {
				selectedIndicator.x = skinButtons[i].x;
				selectedIndicator.y = skinButtons[i].y;
				selectedIndicator.visible = true;
				break;
			}
		}
	};
	// Position shop in the center
	self.x = gameWidth / 2;
	self.y = gameHeight / 2;
	// Update rainbow skin colors and selection indicator
	self.update = function () {
		// Rainbow effect animation for rainbow skin buttons
		for (var i = 0; i < skinButtons.length; i++) {
			if (skinButtons[i].isRainbow) {
				// Instead of tinting, apply a subtle scale animation
				var pulseAmount = Math.sin(LK.ticks / 10) * 0.1;
				// Find the bird icon within the button
				for (var j = 0; j < skinButtons[i].children.length; j++) {
					var child = skinButtons[i].children[j];
					if (child.isAsset) {
						// Animate the rainbow bird icon with a subtle pulse
						child.scale.set(2 + pulseAmount, 2 + pulseAmount);
						break;
					}
				}
			}
		}
	};
	// Initialize the selection indicator
	self.updateSelectedIndicator();
	return self;
});
var Spike = Container.expand(function () {
	var self = Container.call(this);
	// Create spike shape using a triangle
	var spikeGraphics = self.attachAsset('shape', {
		width: 200,
		height: 200,
		color: 0x0000FF,
		// Blue color for spike
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Rotate to make it look like a spike
	spikeGraphics.rotation = Math.PI / 4; // 45 degrees
	self.isStuck = false;
	self.wall = null;
	self.lastWasIntersecting = false;
	// Stick to a wall
	self.stickTo = function (wall) {
		self.isStuck = true;
		self.wall = wall;
		// Position on wall edge based on wall orientation
		if (wall.isVertical) {
			self.x = wall.x + (wall.x < 1024 ? 50 : -50); // Left or right wall - adjusted for wider walls
			// Keep y position where the collision happened
		} else {
			self.y = wall.y + (wall.y < 1366 ? 50 : -50); // Top or bottom wall - adjusted for taller walls
			// Keep x position where the collision happened
		}
	};
	self.update = function () {
		// Nothing to update when stuck
		if (!self.isStuck) {
			// If not stuck, spike can move or be collected later
			self.rotation += 0.05;
		}
	};
	return self;
});
var StartScreen = Container.expand(function () {
	var self = Container.call(this);
	// Create title text
	var titleText = new Text2('BOUNCE BIRD', {
		size: 150,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 2048 / 2;
	titleText.y = 2732 / 3;
	self.addChild(titleText);
	// Create start button
	var startButton = new Container();
	var buttonBg = startButton.attachAsset('shape', {
		width: 500,
		height: 150,
		color: 0x4682B4,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	var startText = new Text2('TAP TO START', {
		size: 80,
		fill: 0xFFFFFF
	});
	startText.anchor.set(0.5, 0.5);
	startButton.addChild(startText);
	startButton.x = 2048 / 2;
	startButton.y = 2732 / 2;
	self.addChild(startButton);
	// Create shop button
	var shopButton = new Container();
	var shopBg = shopButton.attachAsset('shape', {
		width: 300,
		height: 120,
		color: 0x4682B4,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	var shopText = new Text2('SHOP', {
		size: 60,
		fill: 0xFFFFFF
	});
	shopText.anchor.set(0.5, 0.5);
	shopButton.addChild(shopText);
	shopButton.x = 2048 / 2;
	shopButton.y = 2732 / 2 + 200;
	shopButton.down = function () {
		if (self.onShop) {
			self.onShop();
		}
	};
	self.addChild(shopButton);
	// Add a bouncing bird animation - use the selected skin if available
	var skinToShow = storage.selectedSkin || "bird";
	var demoBird = self.attachAsset(skinToShow, {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 4,
		scaleY: 4,
		x: 2048 / 2,
		y: 2732 * 0.7
	});
	// Make the button pulse
	self.update = function () {
		var scale = 1 + Math.sin(LK.ticks / 20) * 0.05;
		startButton.scale.set(scale);
		// Make the bird bounce
		demoBird.y = 2732 * 0.7 + Math.sin(LK.ticks / 15) * 50;
		demoBird.rotation = Math.sin(LK.ticks / 30) * 0.2;
	};
	// Handle tap event
	self.down = function () {
		if (self.onStart) {
			self.onStart();
		}
	};
	return self;
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	// Wall properties
	self.isVertical = true;
	self.wallGraphics = null;
	// Initialize with wall type (vertical/horizontal)
	self.init = function (vertical) {
		self.isVertical = vertical;
		if (vertical) {
			self.wallGraphics = self.attachAsset('wall', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		} else {
			self.wallGraphics = self.attachAsset('ceiling', {
				anchorX: 0.5,
				anchorY: 0.5
			});
		}
		return self;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Change background color to sky blue
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Change background color to sky blue
// Assets for Bounce Bird
// Import tween plugin
game.setBackgroundColor(0x87CEEB);
// Game variables
var bird;
var walls = [];
var seeds = [];
var spikes = [];
var score = 0;
var gameWidth = 2048;
var gameHeight = 2732;
var gameStarted = false;
var startScreen;
var shopScreen;
var shopOpen = false;
var coinText;
// Create start screen
function showStartScreen() {
	startScreen = new StartScreen();
	startScreen.onStart = function () {
		gameStarted = true;
		startScreen.destroy();
		startScreen = null;
		startGame();
	};
	startScreen.onShop = function () {
		showShopScreen();
	};
	game.addChild(startScreen);
}
// Show shop screen
function showShopScreen() {
	shopOpen = true;
	// If start screen exists, hide it temporarily
	if (startScreen) {
		startScreen.visible = false;
	}
	shopScreen = new ShopScreen();
	shopScreen.onClose = function () {
		shopOpen = false;
		shopScreen.destroy();
		shopScreen = null;
		// Show the start screen if not already in game
		if (!gameStarted) {
			// If we hid the start screen, just make it visible again instead of creating a new one
			if (startScreen && !startScreen.visible) {
				startScreen.visible = true;
			} else {
				showStartScreen();
			}
		}
	};
	shopScreen.onSkinSelected = function (skinId) {
		// This will be applied next time a bird is created
	};
	game.addChild(shopScreen);
}
// Initialize the actual game
function startGame() {
	createBird();
	createWalls();
	createScoreDisplay();
}
// Create score text
var scoreText;
function createScoreDisplay() {
	scoreText = new Text2('Score: 0', {
		size: 80,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(0, 0);
	LK.gui.topLeft.addChild(scoreText);
	scoreText.x = 120; // Avoid the top-left 100x100 menu area
	scoreText.y = 50;
	// Create coin text
	coinText = new Text2('Coins: ' + storage.coins, {
		size: 60,
		fill: 0xFFD700
	});
	coinText.anchor.set(0, 0);
	LK.gui.topLeft.addChild(coinText);
	coinText.x = 120; // Avoid the top-left 100x100 menu area
	coinText.y = 140;
}
// Create bird
function createBird() {
	bird = new Bird();
	bird.x = gameWidth / 4;
	bird.y = gameHeight / 2;
	game.addChild(bird);
}
// Create walls (top, bottom, left, right)
function createWalls() {
	// Top wall (ceiling)
	var ceiling = new Wall().init(false);
	ceiling.x = gameWidth / 2;
	ceiling.y = 40;
	game.addChild(ceiling);
	walls.push(ceiling);
	// Bottom wall (floor)
	var floor = new Wall().init(false);
	floor.x = gameWidth / 2;
	floor.y = gameHeight - 40;
	game.addChild(floor);
	walls.push(floor);
	// Left wall
	var leftWall = new Wall().init(true);
	leftWall.x = 40;
	leftWall.y = gameHeight / 2;
	game.addChild(leftWall);
	walls.push(leftWall);
	// Right wall
	var rightWall = new Wall().init(true);
	rightWall.x = gameWidth - 40;
	rightWall.y = gameHeight / 2;
	game.addChild(rightWall);
	walls.push(rightWall);
}
// Show start screen instead of immediately starting the game
showStartScreen();
// Spawn a new seed at a random position
function spawnSeed() {
	var seed = new Seed();
	seed.x = gameWidth + 50;
	seed.y = Math.random() * (gameHeight - 200) + 100;
	seeds.push(seed);
	game.addChild(seed);
}
// Handle click/tap anywhere on screen
game.down = function (x, y, obj) {
	if (shopOpen) {
		// Don't handle game inputs when shop is open
		return;
	}
	// Add a shop button after game over
	if (!gameStarted && !startScreen) {
		// This means we're in the game over state
		showShopScreen();
		return;
	}
	if (gameStarted && bird) {
		bird.flap();
	}
};
// Update function
game.update = function () {
	// Don't process game logic if game hasn't started yet or shop is open
	if (!gameStarted || shopOpen) {
		return;
	}
	// Seeds now spawn on bounce, not periodically
	// Update seeds
	for (var i = seeds.length - 1; i >= 0; i--) {
		var seed = seeds[i];
		// Check for collision with bird
		var currentIntersecting = bird.intersects(seed);
		if (!seed.lastWasIntersecting && currentIntersecting) {
			// Collected seed
			score++;
			scoreText.setText("Score: " + score);
			LK.setScore(score);
			// Award a coin for each seed
			storage.coins += 1;
			coinText.setText("Coins: " + storage.coins);
			LK.getSound('collect').play();
			// Remove seed
			seed.destroy();
			seeds.splice(i, 1);
		} else {
			seed.lastWasIntersecting = currentIntersecting;
			// Remove seeds that should be removed
			if (seed.shouldBeRemoved) {
				seed.destroy();
				seeds.splice(i, 1);
			}
		}
	}
	// Check for wall collisions
	for (var i = 0; i < walls.length; i++) {
		var wall = walls[i];
		var currentIntersecting = bird.intersects(wall);
		if (!bird.lastWasIntersecting && currentIntersecting) {
			// Check if bird hit ceiling or floor (horizontal walls)
			if (!wall.isVertical) {
				// Bird hit ceiling or floor - game over!
				LK.effects.flashScreen(0xFF0000, 500);
				LK.showGameOver();
				break;
			} else {
				// Bird hit a side wall - bounce!
				LK.getSound('bounce').play();
				// Apply bounce physics
				bird.velocityX *= -1; // Reverse horizontal direction
				// Push bird away from wall to prevent sticking
				bird.x += bird.velocityX > 0 ? 5 : -5;
				// Visual feedback for bounce
				LK.effects.flashObject(bird, 0xFFFFFF, 200);
				// Clear old seeds and spikes on bounce
				for (var j = seeds.length - 1; j >= 0; j--) {
					seeds[j].destroy();
					seeds.splice(j, 1);
				}
				// Clear all existing spikes
				for (var j = spikes.length - 1; j >= 0; j--) {
					spikes[j].destroy();
					spikes.splice(j, 1);
				}
				// Reset all wall colors to the original blue color
				for (var j = 0; j < walls.length; j++) {
					if (walls[j].isVertical) {
						tween(walls[j].wallGraphics, {
							tint: 0x4682b4
						}, {
							duration: 300,
							easing: tween.easeIn
						});
					}
				}
				// Spawn two new seeds on bounce
				for (var k = 0; k < 2; k++) {
					var newSeed = new Seed();
					// Make seeds spawn more in the middle - use narrower range centered around the middle
					var middleX = gameWidth / 2;
					var middleY = gameHeight / 2;
					var spawnWidth = gameWidth * 0.6; // Use 60% of screen width
					var spawnHeight = gameHeight * 0.6; // Use 60% of screen height
					newSeed.x = middleX + (Math.random() - 0.5) * spawnWidth;
					newSeed.y = middleY + (Math.random() - 0.5) * spawnHeight;
					seeds.push(newSeed);
					game.addChild(newSeed);
				}
				// Add a spike that sticks to the opposite wall
				var spike = new Spike();
				// Place spike on opposite vertical wall
				targetWall = wall.x < gameWidth / 2 ? walls[3] : walls[2]; // walls[3] is right wall, walls[2] is left wall
				spike.x = targetWall.x;
				spike.y = Math.random() * (gameHeight - 200) + 100; // Random Y position
				spike.stickTo(targetWall);
				spikes.push(spike);
				game.addChild(spike);
				// Change the target wall color to match the spike color (blue)
				tween(targetWall.wallGraphics, {
					tint: 0x0000FF
				}, {
					duration: 300,
					easing: tween.easeOut
				});
			}
			// Set lastWasIntersecting for the specific wall collision that just happened
			bird.lastWasIntersecting = true;
			break; // Exit the loop after handling a collision
		}
	}
	// Reset lastWasIntersecting if not intersecting any wall
	var intersectingAnyWall = false;
	for (var i = 0; i < walls.length; i++) {
		if (bird.intersects(walls[i])) {
			intersectingAnyWall = true;
			break;
		}
	}
	if (!intersectingAnyWall) {
		bird.lastWasIntersecting = false;
	}
	// Check for spike collisions
	for (var i = 0; i < spikes.length; i++) {
		var spike = spikes[i];
		var currentIntersecting = bird.intersects(spike);
		if (!spike.lastWasIntersecting && currentIntersecting) {
			// Bird hit a spike - game over!
			LK.effects.flashScreen(0xFF0000, 500);
			LK.showGameOver();
			break;
		}
		spike.lastWasIntersecting = currentIntersecting;
	}
	// Check if bird flew off screen (game over condition)
	if (bird.y < -100 || bird.y > gameHeight + 100 || bird.x < -100 || bird.x > gameWidth + 100) {
		LK.effects.flashScreen(0xFF0000, 500);
		LK.showGameOver();
	}
};

===================================================================
--- original.js
+++ change.js
@@ -497,16 +497,25 @@
 }
 // Show shop screen
 function showShopScreen() {
 	shopOpen = true;
+	// If start screen exists, hide it temporarily
+	if (startScreen) {
+		startScreen.visible = false;
+	}
 	shopScreen = new ShopScreen();
 	shopScreen.onClose = function () {
 		shopOpen = false;
 		shopScreen.destroy();
 		shopScreen = null;
 		// Show the start screen if not already in game
 		if (!gameStarted) {
-			showStartScreen();
+			// If we hid the start screen, just make it visible again instead of creating a new one
+			if (startScreen && !startScreen.visible) {
+				startScreen.visible = true;
+			} else {
+				showStartScreen();
+			}
 		}
 	};
 	shopScreen.onSkinSelected = function (skinId) {
 		// This will be applied next time a bird is created