/**** 
* Classes
****/ 
// Define a class for bullets
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.speedX) {
			self.x += self.speedX; // Update x position if horizontal speed is set
		}
		if (self.y < 0 || self.x < 0 || self.x > 2048) {
			self.destroy();
			return; // Exit early if bullet is destroyed
		}
	};
});
var Collectible = Container.expand(function () {
	var self = Container.call(this);
	var collectibleGraphics = self.attachAsset('entity', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Define collectible behavior here
	};
});
// 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.y += self.speed;
		if (self.y > 2732) {
			self.y = 0;
			self.x = Math.random() * 2048; // Always reset x position
		}
	};
});
// Define a class for the entity
// Define a class for the ground
var Ground = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = self.attachAsset('ground', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Check for intersection with falling entities
		for (var i = 0; i < enemies.length; i++) {
			if (self.intersects(enemies[i])) {
				enemies[i].destroy(); // Destroy the enemy
				self.destroy(); // Destroy the ground piece
				break; // Exit loop after handling collision
			}
		}
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define a class for the MainCharacter
var MainCharacter = Container.expand(function () {
	var self = Container.call(this);
	var mainCharacterGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		// MainCharacter update logic with gravity, jumping, and horizontal movement
		self.y = 2732 - self.height / 2; // Fix y position to ground level
		// Horizontal movement
		if (game.keys['ArrowLeft']) {
			self.x -= self.speed; // Move left 
		}
		if (game.keys['ArrowRight']) {
			self.x += self.speed; // Move right 
		}
		// Ensure MainCharacter stays on top of Ground pieces
		for (var i = 0; i < ground.length; i++) {
			if (self.intersects(ground[i])) {
				if (self.y + self.height / 2 > ground[i].y) {
					self.y = ground[i].y - self.height / 2;
				}
				self.speedY = 0; // Stop falling
				self.canJump = true; // Allow jumping
				break;
			}
		}
	};
});
// Define a class for the purple square
var PurpleSquare = Container.expand(function () {
	var self = Container.call(this);
	var squareGraphics = self.attachAsset('entity', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		self.down = function (x, y, obj) {
			// No action on down to leave background empty
		};
	};
});

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

/**** 
* Game Code
****/ 
function spawnCollectible() {
	var collectible = new Collectible();
	collectible.x = Math.random() * 2048;
	collectible.y = Math.random() * 2732;
	collectibles.push(collectible);
	game.addChild(collectible);
}
// Spawn a collectible every 5 seconds
LK.setInterval(spawnCollectible, 5000);
// Initialize key handling
game.keys = {};
game.keydown = function (event) {
	game.keys[event.key] = true;
};
game.keyup = function (event) {
	game.keys[event.key] = false;
};
// Initialize ground with a flat surface for the character
var ground = [];
for (var i = 0; i < 20; i++) {
	for (var j = 0; j < 5; j++) {
		// Fill 5 blocks below the ground
		var groundPiece = new Ground();
		groundPiece.x = i * 100;
		groundPiece.y = 2732 - 500 + j * 100; // Adjust y position for each block
		ground.push(groundPiece);
		game.addChild(groundPiece);
	}
}
// Initialize main character with gravity and jumping mechanics
var mainCharacter = game.addChild(new MainCharacter());
mainCharacter.x = 2048 / 2;
mainCharacter.y = ground[ground.length - 1].y - mainCharacter.height - 400;
mainCharacter.speedY = 0; // Initial vertical speed
mainCharacter.canJump = false; // Initial jump state
// Initialize bullets
var bullets = [];
// Initialize click counter for shooting
var clickCounter = 0;
// Initialize collectibles
var collectibles = [];
// Initialize enemies with spawning logic
var enemies = [];
function spawnEnemy() {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = 0; // Set initial y position to the lowest y-coordinate
	enemies.push(enemy);
	game.addChild(enemy);
}
// Spawn an enemy every 3 seconds
LK.setInterval(spawnEnemy, 3000);
// Handle player movement
game.down = function (x, y, obj) {
	// Add ground at the mouse click position
	// Check if the new ground piece overlaps with any existing ground piece
	var canPlace = true;
	for (var i = 0; i < ground.length; i++) {
		if (Math.abs(ground[i].x - x) < 100 && Math.abs(ground[i].y - y) < 100) {
			canPlace = false;
			break;
		}
	}
	if (canPlace) {
		var groundPiece = new Ground();
		groundPiece.x = x;
		groundPiece.y = y;
		ground.push(groundPiece);
		game.addChild(groundPiece);
	}
};
// Handle shooting
game.up = function (x, y, obj) {
	// Shooting functionality removed
};
// Game update loop
game.update = function () {
	// Update main character
	mainCharacter.update();
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		if (mainCharacter.intersects(enemies[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			break; // Exit loop early if game over is triggered
		} else {
			enemies[i].update();
			if (enemies[i].y > 2732) {
				enemies[i].destroy();
				enemies.splice(i, 1);
			}
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		if (bullets[j].y < 0) {
			bullets[j].destroy();
			bullets.splice(j, 1);
		} else {
			for (var k = enemies.length - 1; k >= 0; k--) {
				if (bullets[j].intersects(enemies[k])) {
					bullets[j].destroy();
					bullets.splice(j, 1);
					enemies[k].destroy();
					enemies.splice(k, 1);
					break;
				}
			}
		}
	}
	// Update collectibles
	for (var l = collectibles.length - 1; l >= 0; l--) {
		collectibles[l].update();
		if (mainCharacter.intersects(collectibles[l])) {
			collectibles[l].destroy();
			collectibles.splice(l, 1);
			// Add logic for what happens when a collectible is collected
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -76,20 +76,9 @@
 	});
 	self.speed = 10;
 	self.update = function () {
 		// MainCharacter update logic with gravity, jumping, and horizontal movement
-		self.y += self.speedY; // Apply gravity
-		self.speedY += 1; // Gravity effect
-		if (self.y > 2732 - self.height / 2) {
-			// Check if on the ground
-			self.y = 2732 - self.height / 2;
-			self.speedY = 0;
-			self.canJump = true;
-		}
-		if (game.isMouseDown && self.canJump) {
-			self.speedY = -20; // Jump strength
-			self.canJump = false;
-		}
+		self.y = 2732 - self.height / 2; // Fix y position to ground level
 		// Horizontal movement
 		if (game.keys['ArrowLeft']) {
 			self.x -= self.speed; // Move left 
 		}