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

/**** 
* Classes
****/ 
// Platform class: a static platform the player can land on
var Platform = Container.expand(function () {
	var self = Container.call(this);
	// Platform asset: random width, fixed height, color
	// Platform width will be set on creation
	self.width = 400; // default, will be overwritten
	self.height = 40;
	self.color = 0x4ecdc4;
	// Attach asset
	var platAsset = self.attachAsset('platform', {
		width: self.width,
		height: self.height,
		color: self.color,
		shape: 'ellipse',
		anchorX: 0.5,
		anchorY: 0.5
	});
	// For collision, always use self.x/y and self.width/height
	// Update platform asset size if needed
	self.setSize = function (w, h) {
		self.width = w;
		self.height = h;
		platAsset.width = w;
		platAsset.height = h;
	};
	return self;
});
// Player class: the jumping character
var Player = Container.expand(function () {
	var self = Container.call(this);
	// Attach asset based on selected character
	var assetId = selectedCharacter && selectedCharacter.id ? selectedCharacter.id : 'player';
	var assetColor = selectedCharacter && selectedCharacter.color ? selectedCharacter.color : 0xf67280;
	var playerAsset = self.attachAsset(assetId, {
		width: 100,
		height: 100,
		color: assetColor,
		shape: 'ellipse',
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Physics
	self.vx = 0;
	self.vy = 0;
	self.radius = 50; // for collision
	self.isJumping = false;
	// For touch controls
	self.moveLeft = function () {
		self.vx = -playerMoveSpeed;
	};
	self.moveRight = function () {
		self.vx = playerMoveSpeed;
	};
	self.stopMove = function () {
		self.vx = 0;
	};
	// For jump
	self.jump = function () {
		self.vy = -playerJumpVelocity;
		self.isJumping = true;
		LK.getSound('jump').play();
	};
	return self;
});
// Powerup class: a collectible that gives jump boost
var Powerup = Container.expand(function () {
	var self = Container.call(this);
	// Attach a visible asset (ellipse, yellow)
	var asset = self.attachAsset('powerup', {
		width: 90,
		height: 90,
		color: 0xffe066,
		shape: 'ellipse',
		anchorX: 0.5,
		anchorY: 0.5
	});
	// For collision, use self.x/y and asset size
	self.radius = 45;
	// Track if already collected
	self.collected = false;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x22223b
});

/**** 
* Game Code
****/ 
// --- Constants ---
var GAME_WIDTH = 2048;
var GAME_HEIGHT = 2732;
var PLATFORM_MIN_WIDTH = 300;
var PLATFORM_MAX_WIDTH = 600;
var PLATFORM_HEIGHT = 40;
var PLATFORM_MIN_GAP = 250;
var PLATFORM_MAX_GAP = 600;
var PLATFORM_SIDE_MARGIN = 100;
var PLATFORM_COLOR = 0x4ecdc4;
var PLAYER_START_X = GAME_WIDTH / 2;
var PLAYER_START_Y = GAME_HEIGHT - 400;
var playerMoveSpeed = 18;
var playerJumpVelocity = 60;
var gravity = 3.2;
var maxFallSpeed = 60;
var scrollThreshold = GAME_HEIGHT / 2;
var platformScrollSpeed = 0; // will be set dynamically
// --- State ---
var platforms = [];
var player;
var score = 0;
var scoreTxt;
var highestY = PLAYER_START_Y;
var dragDir = 0; // -1: left, 1: right, 0: none
var isTouching = false;
var lastTouchX = 0;
var lastTouchY = 0;
var gameOver = false;
// --- Powerup State ---
var powerups = [];
var jumpBoostActive = false;
var jumpBoostTimeout = null;
// --- Helper: Spawn Powerup ---
function spawnPowerup(x, y) {
	var p = new Powerup();
	p.x = x;
	p.y = y - 80; // float above platform
	p.visible = true; // ensure powerup is visible when spawned
	powerups.push(p);
	game.addChild(p);
	return p;
}
// --- GUI ---
scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// --- Helper: Platform Generation ---
function randomPlatformWidth() {
	return PLATFORM_MIN_WIDTH + Math.floor(Math.random() * (PLATFORM_MAX_WIDTH - PLATFORM_MIN_WIDTH));
}
function randomPlatformX(width) {
	var minX = PLATFORM_SIDE_MARGIN + width / 2;
	var maxX = GAME_WIDTH - PLATFORM_SIDE_MARGIN - width / 2;
	return minX + Math.random() * (maxX - minX);
}
function randomPlatformGap() {
	return PLATFORM_MIN_GAP + Math.random() * (PLATFORM_MAX_GAP - PLATFORM_MIN_GAP);
}
// --- Helper: Platform Creation ---
function createPlatform(x, y, width) {
	var plat = new Platform();
	plat.setSize(width, PLATFORM_HEIGHT);
	plat.x = x;
	plat.y = y;
	platforms.push(plat);
	game.addChild(plat);
	// Powerup: spawn with 10% chance on top of platform
	if (Math.random() < 0.10) {
		spawnPowerup(x, y - PLATFORM_HEIGHT / 2);
	}
	return plat;
}
// --- Helper: Remove platform ---
function removePlatform(plat) {
	var idx = platforms.indexOf(plat);
	if (idx !== -1) {
		platforms.splice(idx, 1);
	}
	plat.destroy();
}
// --- Helper: Collision Detection (AABB) ---
function playerOnPlatform(player, plat) {
	// Only check if player is falling
	if (player.vy < 0) return false;
	// Player bottom
	var px = player.x;
	var py = player.y + player.radius * 0.8;
	// Platform bounds
	var left = plat.x - plat.width / 2;
	var right = plat.x + plat.width / 2;
	var top = plat.y - plat.height / 2;
	var bottom = plat.y + plat.height / 2;
	// Check if player is above platform and within x bounds
	if (py > top && py < bottom && px > left && px < right) {
		return true;
	}
	return false;
}
// --- Helper: Generate Initial Platforms ---
function generateInitialPlatforms() {
	var y = PLAYER_START_Y + 200;
	// First platform: wide, centered, at bottom
	createPlatform(GAME_WIDTH / 2, y, 600);
	// Generate upwards
	while (y > 400) {
		y -= randomPlatformGap();
		var width = randomPlatformWidth();
		var x = randomPlatformX(width);
		createPlatform(x, y, width);
	}
}
// --- Helper: Generate New Platforms Above ---
function generatePlatformsIfNeeded() {
	// Find highest platform
	var highestPlatY = GAME_HEIGHT;
	for (var i = 0; i < platforms.length; i++) {
		if (platforms[i].y < highestPlatY) highestPlatY = platforms[i].y;
	}
	// Limit to 12 platforms on screen
	while (highestPlatY > -200 && platforms.length < 12) {
		var width = randomPlatformWidth();
		var x = randomPlatformX(width);
		var gap = randomPlatformGap();
		highestPlatY -= gap;
		// Ensure no two platforms have the same Y coordinate (within 1px tolerance)
		var yUnique = true;
		for (var j = 0; j < platforms.length; j++) {
			if (Math.abs(platforms[j].y - highestPlatY) < 1) {
				yUnique = false;
				break;
			}
		}
		if (yUnique) {
			createPlatform(x, highestPlatY, width);
		} else {
			// If not unique, try a slightly different gap
			highestPlatY -= 10 + Math.random() * 20;
		}
	}
}
// --- Helper: Remove Offscreen Platforms ---
function removeOffscreenPlatforms() {
	for (var i = platforms.length - 1; i >= 0; i--) {
		if (platforms[i].y > GAME_HEIGHT + 200) {
			removePlatform(platforms[i]);
		}
	}
}
// --- Helper: Update Score ---
function updateScore() {
	// Score is highestY reached (inverted, since y decreases as we go up)
	var newScore = Math.max(0, Math.floor((PLAYER_START_Y - highestY) / 10));
	if (newScore > score) {
		score = newScore;
		scoreTxt.setText(score);
	}
}
// --- Character Selection ---
var characterOptions = [{
	id: 'player',
	color: 0xf67280,
	label: 'Kırmızı'
}, {
	id: 'player2',
	color: 0x4ecdc4,
	label: 'Mavi'
}, {
	id: 'player3',
	color: 0xffe066,
	label: 'Sarı'
}];
var selectedCharacter = null;
var characterSelectNodes = [];
var characterSelectActive = false;
// --- Start Menu ---
var startMenuNodes = [];
var startMenuActive = true;
function showStartMenu() {
	startMenuActive = true;
	// Remove any previous menu nodes
	for (var i = 0; i < startMenuNodes.length; i++) {
		if (startMenuNodes[i].parent) {
			startMenuNodes[i].parent.removeChild(startMenuNodes[i]);
		}
	}
	startMenuNodes = [];
	// Add a big "Başla" button in the center
	var btnWidth = 600;
	var btnHeight = 180;
	var btnY = GAME_HEIGHT / 2 + 200;
	var btn = LK.getAsset('platform', {
		width: btnWidth,
		height: btnHeight,
		color: 0x4ecdc4,
		shape: 'ellipse',
		anchorX: 0.5,
		anchorY: 0.5,
		x: GAME_WIDTH / 2,
		y: btnY
	});
	btn.interactive = true;
	btn.buttonMode = true;
	// Add label
	var btnLabel = new Text2('Başla', {
		size: 110,
		fill: "#fff"
	});
	btnLabel.anchor.set(0.5, 0.5);
	btnLabel.x = GAME_WIDTH / 2;
	btnLabel.y = btnY;
	game.addChild(btn);
	game.addChild(btnLabel);
	startMenuNodes.push(btn, btnLabel);
}
function hideStartMenu() {
	for (var i = 0; i < startMenuNodes.length; i++) {
		if (startMenuNodes[i].parent) {
			startMenuNodes[i].parent.removeChild(startMenuNodes[i]);
		}
	}
	startMenuNodes = [];
	startMenuActive = false;
}
// Show character selection UI
function showCharacterSelect() {
	characterSelectActive = true;
	// Remove any previous nodes
	for (var i = 0; i < characterSelectNodes.length; i++) {
		if (characterSelectNodes[i].parent) {
			characterSelectNodes[i].parent.removeChild(characterSelectNodes[i]);
		}
	}
	characterSelectNodes = [];
	// Centered horizontally, spaced vertically
	var centerX = GAME_WIDTH / 2;
	var startY = GAME_HEIGHT / 2 - 200;
	var spacing = 250;
	for (var i = 0; i < characterOptions.length; i++) {
		var opt = characterOptions[i];
		var node = LK.getAsset(opt.id, {
			width: 160,
			height: 160,
			color: opt.color,
			shape: 'ellipse',
			anchorX: 0.5,
			anchorY: 0.5,
			x: centerX,
			y: startY + i * spacing
		});
		node.interactive = true;
		node.buttonMode = true;
		// Add label
		var label = new Text2(opt.label, {
			size: 80,
			fill: "#fff"
		});
		label.anchor.set(0.5, 0);
		label.x = centerX;
		label.y = startY + i * spacing + 100;
		// Store index for event
		node._charIndex = i;
		// Add to game
		game.addChild(node);
		game.addChild(label);
		characterSelectNodes.push(node, label);
	}
}
// Remove character selection UI
function hideCharacterSelect() {
	for (var i = 0; i < characterSelectNodes.length; i++) {
		if (characterSelectNodes[i].parent) {
			characterSelectNodes[i].parent.removeChild(characterSelectNodes[i]);
		}
	}
	characterSelectNodes = [];
	characterSelectActive = false;
}
// Listen for down event to select character or start game
game.down = function (x, y, obj) {
	// Start menu active: check if start button pressed
	if (startMenuActive) {
		for (var i = 0; i < startMenuNodes.length; i += 2) {
			var btn = startMenuNodes[i];
			var dx = x - btn.x;
			var dy = y - btn.y;
			// Ellipse hit test
			if (dx * dx / (btn.width * btn.width * 0.25) + dy * dy / (btn.height * btn.height * 0.25) < 1) {
				hideStartMenu();
				showCharacterSelect();
				return;
			}
		}
		return;
	}
	// Character select active: check if character tapped
	if (characterSelectActive) {
		for (var i = 0; i < characterSelectNodes.length; i += 2) {
			var node = characterSelectNodes[i];
			var dx = x - node.x;
			var dy = y - node.y;
			if (dx * dx + dy * dy < 80 * 80) {
				selectedCharacter = characterOptions[node._charIndex];
				hideCharacterSelect();
				resetGame();
				return;
			}
		}
		return;
	}
	if (gameOver) return;
	isTouching = true;
	lastTouchX = x;
	lastTouchY = y;
	// Determine left/right based on touch position
	if (x < GAME_WIDTH / 2) {
		dragDir = -1;
		player.moveLeft();
	} else {
		dragDir = 1;
		player.moveRight();
	}
};
showStartMenu();
// --- Game Setup ---
function resetGame() {
	// Remove old platforms
	for (var i = 0; i < platforms.length; i++) {
		platforms[i].destroy();
	}
	platforms = [];
	// Remove old powerups
	for (var i = 0; i < powerups.length; i++) {
		powerups[i].destroy();
	}
	powerups = [];
	// Remove player if exists
	if (player) player.destroy();
	// Reset state
	score = 0;
	scoreTxt.setText(score);
	highestY = PLAYER_START_Y;
	dragDir = 0;
	isTouching = false;
	lastTouchX = 0;
	lastTouchY = 0;
	gameOver = false;
	jumpBoostActive = false;
	if (jumpBoostTimeout) {
		LK.clearTimeout(jumpBoostTimeout);
		jumpBoostTimeout = null;
	}
	// Reset platform count for powerup spawn
	createPlatform.platformCount = 0;
	// Generate platforms
	generateInitialPlatforms();
	// Create player
	player = new Player();
	player.x = PLAYER_START_X;
	player.y = PLAYER_START_Y;
	player.vx = 0;
	player.vy = 0;
	player.isJumping = false;
	game.addChild(player);
}
// --- Input Handling (Touch/Drag) ---
game.down = function (x, y, obj) {
	if (gameOver) return;
	isTouching = true;
	lastTouchX = x;
	lastTouchY = y;
	// Determine left/right based on touch position
	if (x < GAME_WIDTH / 2) {
		dragDir = -1;
		player.moveLeft();
	} else {
		dragDir = 1;
		player.moveRight();
	}
};
game.move = function (x, y, obj) {
	if (gameOver) return;
	if (!isTouching) return;
	// If finger crosses center, switch direction
	if (dragDir === -1 && x > GAME_WIDTH / 2) {
		dragDir = 1;
		player.moveRight();
	} else if (dragDir === 1 && x < GAME_WIDTH / 2) {
		dragDir = -1;
		player.moveLeft();
	}
	lastTouchX = x;
	lastTouchY = y;
};
game.up = function (x, y, obj) {
	if (gameOver) return;
	isTouching = false;
	dragDir = 0;
	player.stopMove();
};
// --- Main Game Loop ---
game.update = function () {
	if (gameOver) return;
	// --- Player Physics ---
	// Show player only when jumping
	if (player.isJumping && !player.parent) {
		game.addChild(player);
	} else if (!player.isJumping && player.parent) {
		player.parent.removeChild(player);
	}
	// Horizontal movement
	player.x += player.vx;
	// Clamp to screen
	if (player.x < player.radius) player.x = player.radius;
	if (player.x > GAME_WIDTH - player.radius) player.x = GAME_WIDTH - player.radius;
	// Vertical movement
	player.y += player.vy;
	player.vy += gravity;
	if (player.vy > maxFallSpeed) player.vy = maxFallSpeed;
	// --- Platform Collision ---
	var landed = false;
	for (var i = 0; i < platforms.length; i++) {
		if (playerOnPlatform(player, platforms[i])) {
			// Only allow landing if falling
			if (player.vy >= 0) {
				player.y = platforms[i].y - platforms[i].height / 2 - player.radius * 0.8;
				player.jump();
				landed = true;
				break;
			}
		}
	}
	// --- Scrolling ---
	// If player is above scroll threshold, move everything down
	if (player.y < scrollThreshold) {
		var dy = scrollThreshold - player.y;
		player.y = scrollThreshold;
		// Move all platforms down
		for (var i = 0; i < platforms.length; i++) {
			platforms[i].y += dy;
		}
		// Move all powerups down (so they behave like platforms)
		for (var i = 0; i < powerups.length; i++) {
			powerups[i].y += dy;
		}
		// Track highestY
		highestY -= dy;
	} else {
		// Track highestY
		if (player.y < highestY) highestY = player.y;
	}
	// --- Remove Offscreen Platforms & Generate New Ones ---
	removeOffscreenPlatforms();
	generatePlatformsIfNeeded();
	// --- Powerup Collision ---
	for (var i = powerups.length - 1; i >= 0; i--) {
		var p = powerups[i];
		if (!p.collected) {
			// Simple circle collision
			var dx = player.x - p.x;
			var dy = player.y - p.y;
			var dist = Math.sqrt(dx * dx + dy * dy);
			if (dist < player.radius + p.radius) {
				// Collect powerup
				p.collected = true;
				p.visible = false;
				// Activate jump boost
				jumpBoostActive = true;
				playerJumpVelocity = 90; // 1.5x original (60)
				// Clear previous timeout if any
				if (jumpBoostTimeout) LK.clearTimeout(jumpBoostTimeout);
				jumpBoostTimeout = LK.setTimeout(function () {
					jumpBoostActive = false;
					playerJumpVelocity = 60;
					jumpBoostTimeout = null;
				}, 3000);
			}
		}
	}
	// --- Remove collected/offscreen powerups ---
	for (var i = powerups.length - 1; i >= 0; i--) {
		var p = powerups[i];
		if (p.collected || p.y > GAME_HEIGHT + 200) {
			p.destroy();
			powerups.splice(i, 1);
		}
	}
	// --- Update Score ---
	updateScore();
	// --- Game Over: Fell below screen ---
	if (player.y > GAME_HEIGHT + 200) {
		gameOver = true;
		LK.effects.flashScreen(0xff0000, 800);
		LK.showGameOver();
	}
};
// --- Start Game ---
resetGame();
// Background image asset for the game (full screen)
// Add background image (always at the back)
var bg = LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	width: GAME_WIDTH,
	height: GAME_HEIGHT
});
game.addChildAt(bg, 0);
// Generate platforms
generateInitialPlatforms();
// Do not add player to game here; will be added only when jumping;

===================================================================
--- original.js
+++ change.js
@@ -275,9 +275,58 @@
 	label: 'Sarı'
 }];
 var selectedCharacter = null;
 var characterSelectNodes = [];
-var characterSelectActive = true;
+var characterSelectActive = false;
+// --- Start Menu ---
+var startMenuNodes = [];
+var startMenuActive = true;
+function showStartMenu() {
+	startMenuActive = true;
+	// Remove any previous menu nodes
+	for (var i = 0; i < startMenuNodes.length; i++) {
+		if (startMenuNodes[i].parent) {
+			startMenuNodes[i].parent.removeChild(startMenuNodes[i]);
+		}
+	}
+	startMenuNodes = [];
+	// Add a big "Başla" button in the center
+	var btnWidth = 600;
+	var btnHeight = 180;
+	var btnY = GAME_HEIGHT / 2 + 200;
+	var btn = LK.getAsset('platform', {
+		width: btnWidth,
+		height: btnHeight,
+		color: 0x4ecdc4,
+		shape: 'ellipse',
+		anchorX: 0.5,
+		anchorY: 0.5,
+		x: GAME_WIDTH / 2,
+		y: btnY
+	});
+	btn.interactive = true;
+	btn.buttonMode = true;
+	// Add label
+	var btnLabel = new Text2('Başla', {
+		size: 110,
+		fill: "#fff"
+	});
+	btnLabel.anchor.set(0.5, 0.5);
+	btnLabel.x = GAME_WIDTH / 2;
+	btnLabel.y = btnY;
+	game.addChild(btn);
+	game.addChild(btnLabel);
+	startMenuNodes.push(btn, btnLabel);
+}
+function hideStartMenu() {
+	for (var i = 0; i < startMenuNodes.length; i++) {
+		if (startMenuNodes[i].parent) {
+			startMenuNodes[i].parent.removeChild(startMenuNodes[i]);
+		}
+	}
+	startMenuNodes = [];
+	startMenuActive = false;
+}
 // Show character selection UI
 function showCharacterSelect() {
 	characterSelectActive = true;
 	// Remove any previous nodes
@@ -330,12 +379,27 @@
 	}
 	characterSelectNodes = [];
 	characterSelectActive = false;
 }
-// Listen for down event to select character
+// Listen for down event to select character or start game
 game.down = function (x, y, obj) {
+	// Start menu active: check if start button pressed
+	if (startMenuActive) {
+		for (var i = 0; i < startMenuNodes.length; i += 2) {
+			var btn = startMenuNodes[i];
+			var dx = x - btn.x;
+			var dy = y - btn.y;
+			// Ellipse hit test
+			if (dx * dx / (btn.width * btn.width * 0.25) + dy * dy / (btn.height * btn.height * 0.25) < 1) {
+				hideStartMenu();
+				showCharacterSelect();
+				return;
+			}
+		}
+		return;
+	}
+	// Character select active: check if character tapped
 	if (characterSelectActive) {
-		// Check if any character node was tapped
 		for (var i = 0; i < characterSelectNodes.length; i += 2) {
 			var node = characterSelectNodes[i];
 			var dx = x - node.x;
 			var dy = y - node.y;
@@ -360,9 +424,9 @@
 		dragDir = 1;
 		player.moveRight();
 	}
 };
-showCharacterSelect();
+showStartMenu();
 // --- Game Setup ---
 function resetGame() {
 	// Remove old platforms
 	for (var i = 0; i < platforms.length; i++) {