/**** 
* Classes
****/ 
var Coin = Container.expand(function () {
	var self = Container.call(this);
	var coinGraphics = self.attachAsset('coin', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
	return self;
});
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
	return self;
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.jumpHeight = 40;
	self.isJumping = false;
	self.velocityY = 0;
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7;
			if (self.y >= 2732 / 2) {
				self.y = 2732 / 2;
				self.isJumping = false;
				self.velocityY = 0;
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
function spawnCoinOnPlatform(platform) {
	var coin = new Coin();
	coin.x = 2048;
	coin.y = platform.y - 150;
	game.addChild(coin);
	coins.push(coin);
}
function updatePlayer() {
	player.speed += 2;
	player.jumpHeight += 10;
	LK.effects.flashScreen(0x00ff00, 500);
}
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
background.x = 0;
background.y = 0;
var platforms = [];
for (var i = 1; i < 7; i++) {
	var platform = new Platform();
	platform.x = 2048 / 2;
	platform.y = 2732 / 7 * i;
	platforms.push(platform);
	game.addChild(platform);
}
var player = game.addChild(new Player());
player.currentPlatform = platforms[5];
player.y = player.currentPlatform.y - player.height;
player.x = 250;
var enemies = [];
var enemySpawnCounter = 0;
var enemySpawnInterval = 100;
var coins = [];
var coinCount = 0;
var scoreText = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
LK.gui.top.addChild(scoreText);
scoreText.x = 2048 / 2;
scoreText.y = 0;
var coinText = new Text2('Coins: 0', {
	size: 80,
	fill: 0xFFFF00
});
LK.gui.bottom.addChild(coinText);
coinText.x = 2048 / 2;
coinText.y = 0;
game.update = function () {
	player.update();
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval && enemies.length === 0) {
		var usedPlatforms = [];
		for (var i = 0; i < 4; i++) {
			var enemy = new Enemy();
			enemy.x = 2048;
			var randomIndex;
			do {
				randomIndex = Math.floor(Math.random() * platforms.length);
			} while (usedPlatforms.includes(randomIndex));
			usedPlatforms.push(randomIndex);
			var randomPlatform = platforms[randomIndex];
			enemy.y = randomPlatform.y - enemy.height + 50;
			enemies.push(enemy);
			game.addChild(enemy);
		}
		enemySpawnInterval = Math.floor(Math.random() * 300) + 100;
		enemySpawnCounter = 0;
		var allIndexes = [0, 1, 2, 3, 4, 5];
		var coinPlatforms = allIndexes.filter(function (i) {
			return !usedPlatforms.includes(i);
		});
		if (coinPlatforms.length > 0) {
			var coinIndex = coinPlatforms[Math.floor(Math.random() * coinPlatforms.length)];
			spawnCoinOnPlatform(platforms[coinIndex]);
		}
	}
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].update();
		if (player.intersects(enemies[j])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		} else if (player.x > enemies[j].x && !enemies[j].passed) {
			enemies[j].passed = true;
			LK.setScore(LK.getScore() + 1);
			scoreText.setText(LK.getScore());
		}
		if (enemies[j].x < -50) {
			game.removeChild(enemies[j]);
			enemies.splice(j, 1);
		}
	}
	for (var k = coins.length - 1; k >= 0; k--) {
		if (player.intersects(coins[k])) {
			game.removeChild(coins[k]);
			coins.splice(k, 1);
			coinCount++;
			coinText.setText('Coins: ' + coinCount);
			if (coinCount >= 10) {
				updatePlayer();
			}
		}
	}
};
game.down = function (x, y, obj) {
	var currentPlatformIndex = platforms.indexOf(player.currentPlatform);
	if (currentPlatformIndex === 5) {
		player.currentPlatform = platforms[0];
	} else {
		player.currentPlatform = platforms[currentPlatformIndex + 1];
	}
	if (player.currentPlatform) {
		player.y = player.currentPlatform.y - player.height + 100;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -192,7 +192,7 @@
 	} else {
 		player.currentPlatform = platforms[currentPlatformIndex + 1];
 	}
 	if (player.currentPlatform) {
-		player.y = player.currentPlatform.y - player.height + 50;
+		player.y = player.currentPlatform.y - player.height + 100;
 	}
 };
\ No newline at end of file