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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	// Bird asset
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3.5,
		scaleY: 3.5
	});
	// 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
		}
	};
	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 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);
	// Add a bouncing bird animation
	var demoBird = self.attachAsset('bird', {
		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;
// Create start screen
function showStartScreen() {
	startScreen = new StartScreen();
	startScreen.onStart = function () {
		gameStarted = true;
		startScreen.destroy();
		startScreen = null;
		startGame();
	};
	game.addChild(startScreen);
}
// 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 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 (gameStarted && bird) {
		bird.flap();
	}
};
// Update function
game.update = function () {
	// Don't process game logic if game hasn't started yet
	if (!gameStarted) {
		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);
			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
@@ -115,8 +115,63 @@
 		}
 	};
 	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);
+	// Add a bouncing bird animation
+	var demoBird = self.attachAsset('bird', {
+		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;
@@ -162,22 +217,46 @@
 var spikes = [];
 var score = 0;
 var gameWidth = 2048;
 var gameHeight = 2732;
+var gameStarted = false;
+var startScreen;
+// Create start screen
+function showStartScreen() {
+	startScreen = new StartScreen();
+	startScreen.onStart = function () {
+		gameStarted = true;
+		startScreen.destroy();
+		startScreen = null;
+		startGame();
+	};
+	game.addChild(startScreen);
+}
+// Initialize the actual game
+function startGame() {
+	createBird();
+	createWalls();
+	createScoreDisplay();
+}
 // Create score text
-var 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;
+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 bird
-bird = new Bird();
-bird.x = gameWidth / 4;
-bird.y = gameHeight / 2;
-game.addChild(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);
@@ -203,10 +282,10 @@
 	rightWall.y = gameHeight / 2;
 	game.addChild(rightWall);
 	walls.push(rightWall);
 }
-// Create initial walls
-createWalls();
+// 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;
@@ -215,12 +294,18 @@
 	game.addChild(seed);
 }
 // Handle click/tap anywhere on screen
 game.down = function (x, y, obj) {
-	bird.flap();
+	if (gameStarted && bird) {
+		bird.flap();
+	}
 };
 // Update function
 game.update = function () {
+	// Don't process game logic if game hasn't started yet
+	if (!gameStarted) {
+		return;
+	}
 	// Seeds now spawn on bounce, not periodically
 	// Update seeds
 	for (var i = seeds.length - 1; i >= 0; i--) {
 		var seed = seeds[i];