/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highestScore: 0
});

/**** 
* Classes
****/ 
// Car class
var Car = Container.expand(function () {
	var self = Container.call(this);
	// Car body
	var carBody = self.attachAsset('car', {
		anchorX: 0.5,
		anchorY: 1
	});
	self.bodyWidth = carBody.width;
	self.bodyHeight = carBody.height;
	// Physics
	self.vy = 0;
	self.isJumping = false;
	// Car jump method
	self.jump = function () {
		if (!self.isJumping) {
			self.vy = jumpVelocity;
			self.isJumping = true;
			LK.getSound('jump').play();
		}
	};
	// Car update method
	self.update = function () {
		// Save lastY for event triggers if needed
		if (typeof self.lastY === "undefined") self.lastY = self.y;
		// Gravity
		if (self.isJumping) {
			self.y += self.vy;
			self.vy += gravity;
			if (self.y >= groundY) {
				self.y = groundY;
				self.vy = 0;
				self.isJumping = false;
			}
		} else {
			self.y = groundY;
		}
		self.lastY = self.y;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87ceeb // sky blue
});

/**** 
* Game Code
****/ 
// Left-right moving obstacle asset
// Constants
// Car: blue box
// Wheel: black ellipse
// Obstacle: red box
// Road: dark gray box
// Jump sound
var groundY = 2200; // y position of the road top
var gravity = 4.5;
var jumpVelocity = -80;
var initialGameSpeed = 24;
var maxGameSpeed = 60;
var gameSpeed = initialGameSpeed;
var obstacleMinGap = 500;
var obstacleMaxGap = 1100;
var obstacleMinY = groundY;
var obstacleMaxY = groundY;
var minObstacleHeight = 120;
var maxObstacleHeight = 220;
// Road
var road = LK.getAsset('road', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: groundY
});
game.addChild(road);
// Car
var car = new Car();
car.x = 400;
car.y = groundY;
game.addChild(car);
// --- Slow effect state ---
var carIsSlowed = false;
var carSlowTicks = 0;
var carSlowDuration = 120; // 2 seconds at 60fps
var carSlowSpeedFactor = 0.45; // 45% speed when slowed
// Obstacles
var obstacles = [];
var nextObstacleX = 2048 + 400;
// Heart collectibles
var heartCollectibles = [];
var nextHeartX = 2048 + 1200; // Start further out
// Gold heart collectibles
var goldHeartCollectibles = [];
var goldHeartActive = false;
var goldHeartTimer = 0;
var goldHeartDuration = 8 * 60; // 8 seconds at 60fps
var goldHeartDisplay = null;
var goldHeartDisplayLives = 0;
// --- Coin system ---
// Persistent coin count (load from storage, default 0)
var coins = typeof storage.coins === "number" ? storage.coins : 0;
// Coin collectibles
var coinCollectibles = [];
// Coin display
var coinTxt = new Text2('', {
	size: 90,
	fill: 0xffe066
});
coinTxt.anchor.set(1, 1);
coinTxt.x = -40;
coinTxt.y = -40;
LK.gui.bottomRight.addChild(coinTxt);
function updateCoinDisplay() {
	coinTxt.setText("Jeton: " + coins);
}
updateCoinDisplay();
// Score
var score = 0;
var lastScore = 0;
var lives = 3; // Start with 3 lives
var maxLives = 3; // This can grow up to 9 as hearts are collected
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Lives display
var livesTxt = new Text2('', {
	size: 90,
	fill: 0xff4444
});
// Anchor to left-bottom
livesTxt.anchor.set(0, 1);
// Place a bit above the very bottom and a bit right from the very left
livesTxt.x = 40;
livesTxt.y = -40;
LK.gui.bottomLeft.addChild(livesTxt);
function updateLivesDisplay() {
	if (goldHeartActive) {
		// Hide normal lives, show gold hearts
		if (!goldHeartDisplay) {
			goldHeartDisplay = new Text2('', {
				size: 76,
				fill: 0xffd700
			});
			goldHeartDisplay.anchor.set(0, 1);
			goldHeartDisplay.x = 18;
			goldHeartDisplay.y = -40;
			LK.gui.bottomLeft.addChild(goldHeartDisplay);
		}
		var hearts = '';
		// Always cap display to 9 hearts maximum to prevent overflow
		var displayMax = maxLives > 9 ? 9 : maxLives;
		var displayLives = goldHeartDisplayLives > 9 ? 9 : goldHeartDisplayLives;
		for (var i = 0; i < displayLives; i++) hearts += '❤ ';
		for (var i = displayLives; i < displayMax; i++) hearts += '♡ ';
		goldHeartDisplay.setText("Altın Can: " + hearts.trim());
		livesTxt.setText(""); // Hide normal
	} else {
		// Show normal lives, hide gold
		if (goldHeartDisplay) goldHeartDisplay.setText("");
		var hearts = '';
		var displayMax = maxLives > 9 ? 9 : maxLives;
		for (var i = 0; i < lives && i < 9; i++) hearts += '❤ ';
		for (var i = lives; i < displayMax; i++) hearts += '♡ ';
		livesTxt.setText("Can: " + hearts.trim());
	}
}
updateLivesDisplay();
// Last score display
var lastScoreTxt = new Text2('', {
	size: 70,
	fill: 0xFFD700
});
lastScoreTxt.anchor.set(0.5, 0);
lastScoreTxt.y = scoreTxt.height + 10;
LK.gui.top.addChild(lastScoreTxt);
// Highest score display (below leaderboard)
var highestScore = storage.highestScore || 0;
var highestScoreTxt = new Text2('', {
	size: 70,
	fill: 0x00ffcc
});
highestScoreTxt.anchor.set(0.5, 0);
highestScoreTxt.y = lastScoreTxt.y + lastScoreTxt.height + 10;
LK.gui.top.addChild(highestScoreTxt);
// Difficulty
var ticksSinceStart = 0;
// --- Start Screen Overlay ---
var gameStarted = false;
var startOverlay = new Container();
var startBg = LK.getAsset('road', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0,
	width: 2048,
	height: 2732
});
startBg.alpha = 0.82;
startOverlay.addChild(startBg);
// Add a visual image to the start overlay
var startVisual = LK.getAsset('car', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 700,
	scaleX: 2.2,
	scaleY: 2.2
});
startOverlay.addChild(startVisual);
var startText = new Text2("Araba Koşusu", {
	size: 180,
	fill: 0xffffff
});
startText.anchor.set(0.5, 0.5);
startText.x = 2048 / 2;
startText.y = 900;
startOverlay.addChild(startText);
var tapText = new Text2("Başlamak için ekrana dokun", {
	size: 90,
	fill: 0xffd700
});
tapText.anchor.set(0.5, 0.5);
tapText.x = 2048 / 2;
tapText.y = 1200;
startOverlay.addChild(tapText);
game.addChild(startOverlay);
// Play 'arkaplan' music on the start screen overlay
LK.playMusic('arkaplan');
// Touch handler: tap anywhere to jump or start
game.down = function (x, y, obj) {
	if (!gameStarted) {
		gameStarted = true;
		startOverlay.visible = false;
		LK.stopMusic(); // Stop 'arkaplan' music when game starts
		return;
	}
	car.jump();
};
// --- Bulut (cloud) background logic ---
// Only define bulutlar array here, spawn logic will be in game.update after gameStarted
if (typeof bulutlar === "undefined") {
	var bulutlar = [];
}
// Main update loop
// --- RainCloud and RainDrop arrays ---
if (typeof rainClouds === "undefined") {
	var rainClouds = [];
}
if (typeof rainDrops === "undefined") {
	var rainDrops = [];
}
game.update = function () {
	if (!gameStarted) return;
	// --- Bulut (cloud) background logic (spawn/update only after gameStarted) ---
	if (bulutlar.length === 0) {
		// Spawn initial clouds
		for (var i = 0; i < 4; i++) {
			var bulut = new Bulut();
			bulut.x = 400 + i * 500 + Math.random() * 200;
			bulut.y = 400 + Math.random() * 600;
			bulut.speed = 1.2 + Math.random() * 1.8;
			game.addChild(bulut);
			bulutlar.push(bulut);
		}
	}
	for (var i = bulutlar.length - 1; i >= 0; i--) {
		var bulut = bulutlar[i];
		bulut.update();
		if (bulut.x < -bulut.width / 2) {
			bulut.destroy();
			bulutlar.splice(i, 1);
		}
	}
	// Spawn new bulut if needed
	if (bulutlar.length < 4) {
		var bulut = new Bulut();
		bulut.x = 2048 + bulut.width / 2 + Math.random() * 200;
		bulut.y = 300 + Math.random() * 800;
		bulut.speed = 1.2 + Math.random() * 1.8;
		game.addChild(bulut);
		bulutlar.push(bulut);
	}
	// --- RainCloud logic (spawn/update only after gameStarted) ---
	if (rainClouds.length === 0) {
		// Spawn initial rain cloud(s)
		for (var i = 0; i < 1; i++) {
			var rainCloud = new RainCloud();
			rainCloud.x = 900 + i * 800 + Math.random() * 200;
			rainCloud.y = 350 + Math.random() * 200;
			rainCloud.speed = 2.2 + Math.random() * 1.5;
			game.addChild(rainCloud);
			rainClouds.push(rainCloud);
		}
	}
	for (var i = rainClouds.length - 1; i >= 0; i--) {
		var rainCloud = rainClouds[i];
		rainCloud.update();
		if (rainCloud.x < -rainCloud.width / 2) {
			rainCloud.destroy();
			rainClouds.splice(i, 1);
		}
	}
	// Spawn new rainCloud if needed
	if (rainClouds.length < 1) {
		var rainCloud = new RainCloud();
		rainCloud.x = 2048 + 200 + Math.random() * 200;
		rainCloud.y = 350 + Math.random() * 200;
		rainCloud.speed = 2.2 + Math.random() * 1.5;
		game.addChild(rainCloud);
		rainClouds.push(rainCloud);
	}
	// --- RainDrop update and cleanup ---
	for (var i = rainDrops.length - 1; i >= 0; i--) {
		var drop = rainDrops[i];
		drop.update();
		if (drop.y > groundY + 100) {
			drop.destroy();
			rainDrops.splice(i, 1);
		}
	}
	ticksSinceStart++;
	// Increase game speed smoothly over time for gradual acceleration
	if (gameSpeed < maxGameSpeed) {
		// Accelerate slowly at first, then faster as time goes on
		// The divisor controls how quickly speed ramps up (higher = slower ramp)
		var speedup = ticksSinceStart / 60 * 0.18; // 0.18 px/frame/sec, adjust for feel
		gameSpeed = initialGameSpeed + speedup;
		if (gameSpeed > maxGameSpeed) gameSpeed = maxGameSpeed;
	}
	// --- Car slow effect logic ---
	if (carIsSlowed) {
		carSlowTicks++;
		if (carSlowTicks >= carSlowDuration) {
			carIsSlowed = false;
			carSlowTicks = 0;
		}
	}
	var effectiveGameSpeed = carIsSlowed ? gameSpeed * carSlowSpeedFactor : gameSpeed;
	// Update car
	car.update();
	// Update obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obs = obstacles[i];
		// If car is slowed, move obstacles at slowed speed for 2 seconds
		if (carIsSlowed) {
			var speed = gameSpeed * carSlowSpeedFactor;
			obs.x -= speed - (typeof effectiveGameSpeed !== "undefined" ? effectiveGameSpeed : gameSpeed);
		}
		obs.update();
		// Remove if off screen
		if (obs.x < -200) {
			obs.destroy();
			obstacles.splice(i, 1);
			continue;
		}
		// Collision detection (AABB)
		var carLeft = car.x - car.bodyWidth / 2 + 20;
		var carRight = car.x + car.bodyWidth / 2 - 20;
		var carTop = car.y - car.bodyHeight;
		var carBottom = car.y;
		var obsLeft = obs.x - obs.bodyWidth / 2;
		var obsRight = obs.x + obs.bodyWidth / 2;
		var obsTop = obs.y - obs.bodyHeight;
		var obsBottom = obs.y;
		var intersect = !(carRight < obsLeft || carLeft > obsRight || carBottom < obsTop + 10 || carTop > obsBottom - 10);
		if (intersect) {
			if (goldHeartActive) {
				// No damage, just animate obstacle tumble and remove after
				if (typeof tween !== "undefined" && typeof tween.create === "function") {
					// Animate: rotate 1.5 turns, fall down
					tween.create(obs, {
						rotation: obs.rotation + Math.PI * 3,
						y: obs.y + 400,
						alpha: 0.2
					}, 700, {
						easing: "easeInCubic"
					}).then(function () {
						obs.destroy();
					});
				} else {
					obs.destroy();
				}
				obstacles.splice(i, 1);
				continue;
			}
			// Play 'engellenmek' sound on collision
			LK.getSound('engellenmek').play();
			// Removed LK.effects.flashScreen(0xff0000, 800);
			lives--;
			updateLivesDisplay();
			// --- Trigger car slow effect for 2 seconds ---
			carIsSlowed = true;
			carSlowTicks = 0;
			if (lives <= 0) {
				// Stop car movement and animate tilt to indicate a crash
				car.vy = 0;
				car.isJumping = false;
				// Animate car tilt to crash angle (0.35 radians) smoothly
				if (typeof tween !== "undefined" && typeof tween.create === "function") {
					tween.create(car.children[0], {
						rotation: 0.35
					}, 320, {
						easing: "easeOutCubic"
					});
				} else {
					car.children[0].rotation = 0.35;
				}
				LK.setScore(score); // Ensure latest score is set
				lastScore = score;
				lastScoreTxt.setText("Son Skor: " + lastScore);
				// Update highest score if needed
				if (score > highestScore) {
					highestScore = score;
					storage.highestScore = highestScore;
					highestScoreTxt.setText("En Yüksek Skor: " + highestScore);
				} else {
					// Always show the stored value if not beaten
					highestScoreTxt.setText("En Yüksek Skor: " + (storage.highestScore || highestScore));
				}
				LK.showGameOver();
				return;
			} else {
				// Animate obstacle tumble and falling to ground, then remove after
				if (typeof tween !== "undefined" && typeof tween.create === "function") {
					tween.create(obs, {
						rotation: obs.rotation + Math.PI * 3,
						y: groundY + obs.height,
						alpha: 0.2
					}, 700, {
						easing: "easeInCubic"
					}).then(function () {
						obs.destroy();
					});
				} else {
					obs.destroy();
				}
				obstacles.splice(i, 1);
				continue;
			}
		}
		// Score: passed obstacle
		if (!obs.passed && obs.x + obs.bodyWidth / 2 < car.x - car.bodyWidth / 2) {
			obs.passed = true;
			score++;
			scoreTxt.setText(score);
		}
	}
	// --- Heart collectibles update and collision ---
	for (var i = heartCollectibles.length - 1; i >= 0; i--) {
		var heart = heartCollectibles[i];
		// If car is slowed, move hearts at slowed speed for 2 seconds
		if (carIsSlowed) {
			var speed = gameSpeed * carSlowSpeedFactor;
			heart.x -= speed - (typeof effectiveGameSpeed !== "undefined" ? effectiveGameSpeed : gameSpeed);
		}
		heart.update();
		// Remove if off screen
		if (heart.x < -200) {
			heart.destroy();
			heartCollectibles.splice(i, 1);
			continue;
		}
		// Collision detection (AABB)
		var carLeft = car.x - car.bodyWidth / 2 + 20;
		var carRight = car.x + car.bodyWidth / 2 - 20;
		var carTop = car.y - car.bodyHeight;
		var carBottom = car.y;
		var heartLeft = heart.x - heart.bodyWidth / 2;
		var heartRight = heart.x + heart.bodyWidth / 2;
		var heartTop = heart.y - heart.bodyHeight;
		var heartBottom = heart.y;
		var intersect = !(carRight < heartLeft || carLeft > heartRight || carBottom < heartTop + 10 || carTop > heartBottom - 10);
		if (intersect) {
			if (!goldHeartActive) {
				// Always increase lives, up to a hard cap of 9
				if (lives < 9) {
					lives++;
					// If we go above maxLives, update maxLives to match (so display shows more hearts)
					if (lives > maxLives) maxLives = lives;
					updateLivesDisplay();
				}
			}
			// Remove the heart collectible
			heart.destroy();
			heartCollectibles.splice(i, 1);
			continue;
		}
	}
	// --- Gold heart collectibles update and collision ---
	for (var i = goldHeartCollectibles.length - 1; i >= 0; i--) {
		var goldHeart = goldHeartCollectibles[i];
		goldHeart.update();
		if (goldHeart.x < -200) {
			goldHeart.destroy();
			goldHeartCollectibles.splice(i, 1);
			continue;
		}
		// Collision detection (AABB)
		var carLeft = car.x - car.bodyWidth / 2 + 20;
		var carRight = car.x + car.bodyWidth / 2 - 20;
		var carTop = car.y - car.bodyHeight;
		var carBottom = car.y;
		var goldLeft = goldHeart.x - goldHeart.bodyWidth / 2;
		var goldRight = goldHeart.x + goldHeart.bodyWidth / 2;
		var goldTop = goldHeart.y - goldHeart.bodyHeight;
		var goldBottom = goldHeart.y;
		var intersect = !(carRight < goldLeft || carLeft > goldRight || carBottom < goldTop + 10 || carTop > goldBottom - 10);
		if (intersect) {
			// Activate gold heart mode
			goldHeartActive = true;
			goldHeartTimer = 0;
			// Fill lives to max when gold heart is collected
			lives = maxLives;
			// Cap goldHeartDisplayLives to 9 to prevent overflow
			goldHeartDisplayLives = lives > 9 ? 9 : lives;
			updateLivesDisplay();
			// Remove the gold heart collectible
			goldHeart.destroy();
			goldHeartCollectibles.splice(i, 1);
			continue;
		}
	}
	// --- Coin collectibles update and collision ---
	for (var i = coinCollectibles.length - 1; i >= 0; i--) {
		var coin = coinCollectibles[i];
		coin.update();
		if (coin.x < -200) {
			coin.destroy();
			coinCollectibles.splice(i, 1);
			continue;
		}
		// Collision detection (AABB)
		var carLeft = car.x - car.bodyWidth / 2 + 20;
		var carRight = car.x + car.bodyWidth / 2 - 20;
		var carTop = car.y - car.bodyHeight;
		var carBottom = car.y;
		var coinLeft = coin.x - coin.bodyWidth / 2;
		var coinRight = coin.x + coin.bodyWidth / 2;
		var coinTop = coin.y - coin.bodyHeight;
		var coinBottom = coin.y;
		var intersect = !(carRight < coinLeft || carLeft > coinRight || carBottom < coinTop + 10 || carTop > coinBottom - 10);
		if (intersect) {
			// Add coin, persistently
			coins++;
			storage.coins = coins;
			updateCoinDisplay();
			coin.destroy();
			coinCollectibles.splice(i, 1);
			continue;
		}
	}
	// Gold heart timer logic
	if (goldHeartActive) {
		goldHeartTimer++;
		if (goldHeartTimer >= goldHeartDuration) {
			goldHeartActive = false;
			goldHeartTimer = 0;
			updateLivesDisplay();
		}
	}
	// Spawn new obstacles
	if (obstacles.length === 0 || obstacles.length > 0 && obstacles[obstacles.length - 1].x < 2048 - getNextGap()) {
		var obs = new Obstacle();
		obs.x = 2048 + 100;
		obs.y = groundY;
		game.addChild(obs);
		obstacles.push(obs);
	}
	// --- Spawn heart collectibles and coins occasionally ---
	if ((heartCollectibles.length === 0 || heartCollectibles.length > 0 && heartCollectibles[heartCollectibles.length - 1].x < 2048 - getNextHeartGap()) && goldHeartCollectibles.length === 0 // Only one gold heart at a time
	) {
		var rand = Math.random();
		if (rand < 0.02) {
			// 2% chance: spawn gold heart
			var goldHeart = new GoldHeartCollectible();
			goldHeart.x = 2048 + 200 + Math.floor(Math.random() * 600);
			goldHeart.y = groundY - 180 - Math.floor(Math.random() * 200);
			game.addChild(goldHeart);
			goldHeartCollectibles.push(goldHeart);
		} else if (rand < 0.44) {
			// 39% chance: spawn normal heart (reduced by 1%)
			var heart = new HeartCollectible();
			heart.x = 2048 + 200 + Math.floor(Math.random() * 600);
			heart.y = groundY - 180 - Math.floor(Math.random() * 200);
			game.addChild(heart);
			heartCollectibles.push(heart);
		} else if (rand < 0.85) {
			// 40% chance: spawn coin
			var coin = new CoinCollectible();
			coin.x = 2048 + 200 + Math.floor(Math.random() * 600);
			coin.y = groundY - 180 - Math.floor(Math.random() * 200);
			game.addChild(coin);
			coinCollectibles.push(coin);
		}
	}
};
// Helper: get next gap (randomized, gets smaller as speed increases)
function getNextGap() {
	var minGap = obstacleMinGap + 400 - Math.floor((gameSpeed - initialGameSpeed) * 10);
	var maxGap = obstacleMaxGap + 600 - Math.floor((gameSpeed - initialGameSpeed) * 12);
	if (minGap < 720) minGap = 720;
	if (maxGap < 1000) maxGap = 1000;
	// 45% chance to make a much wider gap, otherwise normal
	if (Math.random() < 0.45) {
		// Extra wide gap (make even wider)
		var extraMin = maxGap + 700;
		var extraMax = maxGap + 1600;
		return extraMin + Math.floor(Math.random() * (extraMax - extraMin));
	} else {
		// Normal gap
		return minGap + Math.floor(Math.random() * (maxGap - minGap));
	}
}
// Helper: get next heart collectible gap (randomized, not too frequent)
function getNextHeartGap() {
	// Hearts are less frequent than obstacles
	var minGap = 1200;
	var maxGap = 2200;
	return minGap + Math.floor(Math.random() * (maxGap - minGap));
}
// Reset score and lives on game start
LK.setScore(0);
score = 0;
// On game start, reset maxLives to 3, but if lives was higher, keep it (up to 9)
if (lives > 3) {
	maxLives = lives > 9 ? 9 : lives;
} else {
	maxLives = 3;
}
lives = maxLives;
scoreTxt.setText(score);
lastScoreTxt.setText("");
updateLivesDisplay();
heartCollectibles = [];
goldHeartCollectibles = [];
coinCollectibles = [];
goldHeartActive = false;
goldHeartTimer = 0;
goldHeartDisplayLives = 0;
updateCoinDisplay();
if ((storage.highestScore || highestScore) > 0) {
	highestScoreTxt.setText("En Yüksek Skor: " + (storage.highestScore || highestScore));
} else {
	highestScoreTxt.setText("");
}
// Show leaderboard button in the top GUI, right side
var leaderboardBtn = new Text2("🏆", {
	size: 110,
	fill: 0xffff00
});
leaderboardBtn.anchor.set(1, 0); // right-top
leaderboardBtn.x = -40; // offset from right edge
leaderboardBtn.y = 0;
leaderboardBtn.interactive = true;
leaderboardBtn.buttonMode = true;
leaderboardBtn.down = function (x, y, obj) {
	LK.showLeaderboard();
};
LK.gui.topRight.addChild(leaderboardBtn);

===================================================================
--- original.js
+++ change.js
@@ -6,8 +6,53 @@
 	highestScore: 0
 });
 
 /**** 
+* Classes
+****/ 
+// Car class
+var Car = Container.expand(function () {
+	var self = Container.call(this);
+	// Car body
+	var carBody = self.attachAsset('car', {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	self.bodyWidth = carBody.width;
+	self.bodyHeight = carBody.height;
+	// Physics
+	self.vy = 0;
+	self.isJumping = false;
+	// Car jump method
+	self.jump = function () {
+		if (!self.isJumping) {
+			self.vy = jumpVelocity;
+			self.isJumping = true;
+			LK.getSound('jump').play();
+		}
+	};
+	// Car update method
+	self.update = function () {
+		// Save lastY for event triggers if needed
+		if (typeof self.lastY === "undefined") self.lastY = self.y;
+		// Gravity
+		if (self.isJumping) {
+			self.y += self.vy;
+			self.vy += gravity;
+			if (self.y >= groundY) {
+				self.y = groundY;
+				self.vy = 0;
+				self.isJumping = false;
+			}
+		} else {
+			self.y = groundY;
+		}
+		self.lastY = self.y;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
 	backgroundColor: 0x87ceeb // sky blue