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

/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 2;
	self.velocityY = 0;
	self.gravity = 0.8;
	self.isAlive = true;
	self.direction = 1;
	self.patrolDistance = 300;
	self.startX = 0;
	self.update = function () {
		if (!self.isAlive) return;
		// Apply gravity
		self.velocityY += self.gravity;
		// Move horizontally
		self.x += self.velocityX * self.direction;
		self.y += self.velocityY;
		// Ground collision
		if (self.y >= groundLevel - 30) {
			self.y = groundLevel - 30;
			self.velocityY = 0;
		}
		// Platform collision
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			if (self.intersects(platform) && self.velocityY > 0) {
				var enemyBottom = self.y + 30;
				var platformTop = platform.y - 20;
				if (enemyBottom - self.velocityY <= platformTop) {
					self.y = platformTop - 30;
					self.velocityY = 0;
				}
			}
		}
		// Patrol behavior
		if (Math.abs(self.x - self.startX) > self.patrolDistance) {
			self.direction *= -1;
		}
		// Keep enemy in bounds
		if (self.x < 30) {
			self.x = 30;
			self.direction = 1;
		}
		if (self.x > 2018) {
			self.x = 2018;
			self.direction = -1;
		}
	};
	self.defeat = function () {
		self.isAlive = false;
		self.visible = false;
		LK.getSound('enemyDefeat').play();
		LK.setScore(LK.getScore() + 100);
		scoreTxt.setText(LK.getScore());
	};
	return self;
});
var Goal = Container.expand(function () {
	var self = Container.call(this);
	var goalGraphics = self.attachAsset('goal', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	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.velocityX = 0;
	self.velocityY = 0;
	self.speed = 8;
	self.jumpPower = 20;
	self.gravity = 0.8;
	self.isGrounded = false;
	self.isJumping = false;
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		// Apply velocities
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Ground collision
		if (self.y >= groundLevel - 40) {
			self.y = groundLevel - 40;
			self.velocityY = 0;
			self.isGrounded = true;
			self.isJumping = false;
		}
		// Platform collision
		for (var i = 0; i < platforms.length; i++) {
			var platform = platforms[i];
			if (self.intersects(platform) && self.velocityY > 0) {
				var playerBottom = self.y + 40;
				var platformTop = platform.y - 20;
				if (playerBottom - self.velocityY <= platformTop) {
					self.y = platformTop - 40;
					self.velocityY = 0;
					self.isGrounded = true;
					self.isJumping = false;
				}
			}
		}
		// Keep player in bounds
		if (self.x < 40) self.x = 40;
		if (self.x > 2008) self.x = 2008;
		// Apply friction
		self.velocityX *= 0.85;
	};
	self.jump = function () {
		if (self.isGrounded) {
			self.velocityY = -self.jumpPower;
			self.isGrounded = false;
			self.isJumping = true;
			LK.getSound('jump').play();
		}
	};
	self.moveLeft = function () {
		self.velocityX = -self.speed;
	};
	self.moveRight = function () {
		self.velocityX = self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
var player;
var enemies = [];
var platforms = [];
var goal;
var currentLevel = 1;
var lives = 3;
var groundLevel = 2600;
var leftPressed = false;
var rightPressed = false;
var lastTouchX = 0;
var lastTouchY = 0;
// UI Elements
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 120;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
var levelTxt = new Text2('Level: 1', {
	size: 60,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(0.5, 0);
levelTxt.x = 0;
levelTxt.y = 50;
LK.gui.top.addChild(levelTxt);
var livesTxt = new Text2('Lives: 3', {
	size: 60,
	fill: 0xFFFFFF
});
livesTxt.anchor.set(1, 0);
livesTxt.x = -50;
livesTxt.y = 50;
LK.gui.topRight.addChild(livesTxt);
function createLevel(levelNum) {
	// Clear existing level
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].destroy();
		enemies.splice(i, 1);
	}
	for (var i = platforms.length - 1; i >= 0; i--) {
		platforms[i].destroy();
		platforms.splice(i, 1);
	}
	if (goal) {
		goal.destroy();
		goal = null;
	}
	// Create player if not exists
	if (!player) {
		player = game.addChild(new Player());
	}
	// Reset player position
	player.x = 200;
	player.y = groundLevel - 100;
	player.velocityX = 0;
	player.velocityY = 0;
	// Create platforms based on level
	var platformConfigs = [
	// Level 1
	[{
		x: 600,
		y: 2400
	}, {
		x: 1000,
		y: 2200
	}, {
		x: 1400,
		y: 2000
	}, {
		x: 1800,
		y: 1800
	}],
	// Level 2
	[{
		x: 400,
		y: 2400
	}, {
		x: 800,
		y: 2100
	}, {
		x: 1200,
		y: 2300
	}, {
		x: 1600,
		y: 2000
	}, {
		x: 1900,
		y: 1700
	}],
	// Level 3
	[{
		x: 300,
		y: 2300
	}, {
		x: 600,
		y: 2100
	}, {
		x: 900,
		y: 2400
	}, {
		x: 1200,
		y: 2000
	}, {
		x: 1500,
		y: 1800
	}, {
		x: 1800,
		y: 1600
	}]];
	var levelPlatforms = platformConfigs[Math.min(levelNum - 1, 2)];
	for (var i = 0; i < levelPlatforms.length; i++) {
		var platform = game.addChild(new Platform());
		platform.x = levelPlatforms[i].x;
		platform.y = levelPlatforms[i].y;
		platforms.push(platform);
	}
	// Create enemies
	var enemyCount = Math.min(levelNum + 1, 5);
	for (var i = 0; i < enemyCount; i++) {
		var enemy = game.addChild(new Enemy());
		enemy.x = 400 + i * 400;
		enemy.y = groundLevel - 100;
		enemy.startX = enemy.x;
		enemies.push(enemy);
	}
	// Create goal
	goal = game.addChild(new Goal());
	goal.x = 1900;
	goal.y = groundLevel - 75;
	// Update level display
	levelTxt.setText('Level: ' + levelNum);
}
function nextLevel() {
	currentLevel++;
	LK.setScore(LK.getScore() + 500);
	scoreTxt.setText(LK.getScore());
	LK.getSound('levelComplete').play();
	if (currentLevel > 10) {
		LK.showYouWin();
	} else {
		createLevel(currentLevel);
	}
}
function loseLife() {
	lives--;
	livesTxt.setText('Lives: ' + lives);
	if (lives <= 0) {
		LK.showGameOver();
	} else {
		// Reset player position
		player.x = 200;
		player.y = groundLevel - 100;
		player.velocityX = 0;
		player.velocityY = 0;
	}
}
// Touch controls
game.down = function (x, y, obj) {
	lastTouchX = x;
	lastTouchY = y;
	// Jump on tap
	if (player) {
		player.jump();
	}
};
game.move = function (x, y, obj) {
	if (!player) return;
	var deltaX = x - lastTouchX;
	// Movement based on drag direction
	if (Math.abs(deltaX) > 20) {
		if (deltaX > 0) {
			rightPressed = true;
			leftPressed = false;
		} else {
			leftPressed = true;
			rightPressed = false;
		}
	}
	lastTouchX = x;
	lastTouchY = y;
};
game.up = function (x, y, obj) {
	leftPressed = false;
	rightPressed = false;
};
game.update = function () {
	if (!player) return;
	// Handle movement
	if (leftPressed) {
		player.moveLeft();
	}
	if (rightPressed) {
		player.moveRight();
	}
	// Enemy collision detection
	for (var i = 0; i < enemies.length; i++) {
		var enemy = enemies[i];
		if (!enemy.isAlive) continue;
		if (player.intersects(enemy)) {
			// Check if player is jumping on enemy from above
			if (player.velocityY > 0 && player.y < enemy.y - 10) {
				enemy.defeat();
				player.velocityY = -10; // Bounce effect
			} else {
				// Player touched enemy from side - lose life
				LK.getSound('enemyHit').play();
				loseLife();
				return;
			}
		}
	}
	// Goal collision
	if (goal && player.intersects(goal)) {
		nextLevel();
	}
	// Fall off screen
	if (player.y > 2800) {
		loseLife();
	}
};
// Initialize first level
createLevel(1);

===================================================================
--- original.js
+++ change.js
@@ -362,8 +362,9 @@
 				enemy.defeat();
 				player.velocityY = -10; // Bounce effect
 			} else {
 				// Player touched enemy from side - lose life
+				LK.getSound('enemyHit').play();
 				loseLife();
 				return;
 			}
 		}