/**** 
* Classes
****/
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.createAsset('player', 'Player character', 0.5, 1);
	self.velocityY = 0;
	self.isOnGround = false;
	self.jump = function () {
		if (self.isOnGround) {
			self.velocityY = -15; // Jump force
			self.isOnGround = false;
		}
	};
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
		self.velocityY += 0.5; // Gravity

		// Check for ground
		if (self.y > game.height - playerGraphics.height) {
			self.y = game.height - playerGraphics.height;
			self.velocityY = 0;
			self.velocityX = 0;
			self.isOnGround = true;
		}
	};
});
// Define the Platform class
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.createAsset('platform', 'Platform', 0.5, 1);
	self.setInitialPosition = function (x, y) {
		self.x = x;
		self.y = y;
	};
});

/**** 
* Initialize Game
****/
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background
});

/**** 
* Game Code
****/
// Initialize important asset arrays
self.jumpTo = function (targetX, targetY) {
	if (self.isOnGround) {
		self.velocityY = -15; // Jump force
		self.isOnGround = false;
		// Calculate the horizontal velocity needed to reach the targetX
		var timeToReachTargetY = Math.sqrt(2 * (targetY - self.y) / 0.5);
		self.velocityX = (targetX - self.x) / timeToReachTargetY;
	}
};
var platforms = [];
var player;

// Create the player
player = game.addChild(new Player());
player.x = game.width / 2;
player.y = game.height - 150;

// Create initial platforms
var initialPlatformY = game.height - 300;
for (var i = 0; i < 5; i++) {
	var platform = new Platform();
	var randomX = Math.random() * (game.width - platform.width) + platform.width / 2;
	platform.setInitialPosition(randomX, initialPlatformY - i * 200);
	platforms.push(platform);
	game.addChild(platform);
}
// Event listener for touch events on the game area
game.on('down', function (obj) {
	var event = obj.event;
	var clickPosition = event.getLocalPosition(game);
	// Find the nearest platform below the click position
	var nearestPlatform = null;
	var nearestPlatformDistance = Number.MAX_VALUE;
	for (var i = 0; i < platforms.length; i++) {
		var platform = platforms[i];
		var distance = clickPosition.y - platform.y;
		if (clickPosition.x >= platform.x - platform.width / 2 && clickPosition.x <= platform.x + platform.width / 2 && distance > 0 && distance < nearestPlatformDistance) {
			nearestPlatform = platform;
			nearestPlatformDistance = distance;
		}
	}
	// If a platform is found, make the player jump to it
	if (nearestPlatform) {
		player.jumpTo(nearestPlatform.x, nearestPlatform.y - player.height);
	}
});

// Main game update loop
LK.on('tick', function () {
	player.update();

	// Update platforms
	for (var i = 0; i < platforms.length; i++) {
		var platform = platforms[i];
		platform.y += 2; // Move platforms down

		// Recycle platforms
		if (platform.y > game.height) {
			var randomX = Math.random() * (game.width - platform.width) + platform.width / 2;
			platform.x = randomX;
			platform.y = -50;
		}

		// Check for collision with player
		if (player.intersects(platform) && player.velocityY > 0 && player.y + player.height < platform.y + 20) {
			player.isOnGround = true;
			player.velocityY = 0;
			player.y = platform.y - player.height;
		}
	}

	// Check for game over condition
	if (player.y < -player.height) {
		LK.showGameOver();
	}
});

===================================================================
--- original.js
+++ change.js
@@ -3,17 +3,8 @@
 ****/
 // Define the Player class
 var Player = Container.expand(function () {
 	var self = Container.call(this);
-	self.jumpTo = function (targetX, targetY) {
-		if (this.isOnGround) {
-			this.velocityY = -15; // Jump force
-			this.isOnGround = false;
-			// Calculate the horizontal velocity needed to reach the targetX
-			var timeToReachTargetY = Math.sqrt(2 * (targetY - this.y) / 0.5);
-			this.velocityX = (targetX - this.x) / timeToReachTargetY;
-		}
-	};
 	var playerGraphics = self.createAsset('player', 'Player character', 0.5, 1);
 	self.velocityY = 0;
 	self.isOnGround = false;
 	self.jump = function () {
@@ -57,14 +48,14 @@
 * Game Code
 ****/
 // Initialize important asset arrays
 self.jumpTo = function (targetX, targetY) {
-	if (this.isOnGround) {
-		this.velocityY = -15; // Jump force
-		this.isOnGround = false;
+	if (self.isOnGround) {
+		self.velocityY = -15; // Jump force
+		self.isOnGround = false;
 		// Calculate the horizontal velocity needed to reach the targetX
-		var timeToReachTargetY = Math.sqrt(2 * (targetY - this.y) / 0.5);
-		this.velocityX = (targetX - this.x) / timeToReachTargetY;
+		var timeToReachTargetY = Math.sqrt(2 * (targetY - self.y) / 0.5);
+		self.velocityX = (targetX - self.x) / timeToReachTargetY;
 	}
 };
 var platforms = [];
 var player;