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

/**** 
* Classes
****/ 
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 15;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var EnemyCowboy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyCowboy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var weapon = self.attachAsset('enemyWeapon', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: 30,
		y: 0
	});
	self.lane = 1;
	self.speed = 3;
	self.lastShot = 0;
	self.shootCooldown = 180; // 3 seconds at 60fps
	self.targetLane = 1;
	self.laneChangeSpeed = 8;
	self.update = function () {
		self.y += self.speed;
		// Move towards target lane
		var targetX = getLaneX(self.targetLane);
		if (Math.abs(self.x - targetX) > self.laneChangeSpeed) {
			if (self.x < targetX) {
				self.x += self.laneChangeSpeed;
			} else {
				self.x -= self.laneChangeSpeed;
			}
		} else {
			self.x = targetX;
			self.lane = self.targetLane;
		}
		// Shooting logic
		self.lastShot++;
		if (self.lastShot >= self.shootCooldown) {
			self.lastShot = 0;
			// Create enemy bullet
			var bullet = new EnemyBullet();
			var weaponPos = weapon.parent.toGlobal(weapon.position);
			var gamePos = game.toLocal(weaponPos);
			bullet.x = gamePos.x;
			bullet.y = gamePos.y;
			enemyBullets.push(bullet);
			game.addChild(bullet);
			// Animate weapon recoil
			tween(weapon, {
				scaleY: 0.8
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(weapon, {
						scaleY: 1
					}, {
						duration: 100
					});
				}
			});
		}
		// Random lane changing
		if (LK.ticks % 180 === 0 && Math.random() < 0.3) {
			self.targetLane = Math.floor(Math.random() * 3);
		}
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('cowboy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var weapon = self.attachAsset('playerWeapon', {
		anchorX: 0.5,
		anchorY: 0.5,
		x: -25,
		y: -10
	});
	self.lane = 1;
	self.targetLane = 1;
	self.laneChangeSpeed = 12;
	self.lastShot = 0;
	self.shootCooldown = 72; // 1.2 seconds at 60fps
	self.update = function () {
		// Move towards target lane
		var targetX = getLaneX(self.targetLane);
		if (Math.abs(self.x - targetX) > self.laneChangeSpeed) {
			if (self.x < targetX) {
				self.x += self.laneChangeSpeed;
			} else {
				self.x -= self.laneChangeSpeed;
			}
		} else {
			self.x = targetX;
			self.lane = self.targetLane;
		}
		self.lastShot++;
	};
	self.moveLeft = function () {
		if (self.targetLane > 0) {
			self.targetLane--;
		}
	};
	self.moveRight = function () {
		if (self.targetLane < 2) {
			self.targetLane++;
		}
	};
	self.shoot = function () {
		if (self.lastShot >= self.shootCooldown) {
			self.lastShot = 0;
			var bullet = new PlayerBullet();
			var weaponPos = weapon.parent.toGlobal(weapon.position);
			var gamePos = game.toLocal(weaponPos);
			bullet.x = gamePos.x;
			bullet.y = gamePos.y;
			playerBullets.push(bullet);
			game.addChild(bullet);
			LK.getSound('shoot').play();
			// Animate weapon recoil
			tween(weapon, {
				scaleY: 0.7
			}, {
				duration: 80,
				onFinish: function onFinish() {
					tween(weapon, {
						scaleY: 1
					}, {
						duration: 120
					});
				}
			});
		}
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -20;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.maxHealth = 250;
	self.health = self.maxHealth;
	self.isDestroyed = false;
	self.takeDamage = function (damage) {
		if (self.isDestroyed) {
			return;
		}
		self.health -= damage;
		LK.getSound('wallHit').play();
		// Visual damage feedback
		var damagePercent = 1 - self.health / self.maxHealth;
		wallGraphics.tint = 0xFFFFFF - 0x444444 * damagePercent;
		// Shake effect
		tween(self, {
			x: self.x + 10
		}, {
			duration: 100,
			onFinish: function onFinish() {
				tween(self, {
					x: self.x - 10
				}, {
					duration: 100
				});
			}
		});
		if (self.health <= 0) {
			self.destroyWall();
		}
	};
	self.destroyWall = function () {
		if (self.isDestroyed) {
			return;
		}
		self.isDestroyed = true;
		LK.getSound('wallBreak').play();
		// Destruction animation
		tween(self, {
			alpha: 0,
			scaleY: 0.1
		}, {
			duration: 500,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xFF8C00
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var enemies = [];
var playerBullets = [];
var enemyBullets = [];
var gameSpeed = 1;
var survivalTime = 0;
var killCount = 0;
var lastEnemySpawn = 0;
var enemySpawnRate = 200; // 5 seconds at 60fps
var speedIncreaseTimer = 0;
var wall;
var isPaused = false;
var pauseOverlay = null;
// Lane positions
function getLaneX(lane) {
	var laneWidth = 2048 / 3;
	return laneWidth * lane + laneWidth / 2;
}
function togglePause() {
	isPaused = !isPaused;
	if (isPaused) {
		// Create pause overlay
		pauseOverlay = LK.getAsset('orangeBackground', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		pauseOverlay.alpha = 0.8;
		pauseOverlay.x = 1024;
		pauseOverlay.y = 1366;
		pauseOverlay.scaleX = 0.6;
		pauseOverlay.scaleY = 0.4;
		game.addChild(pauseOverlay);
		// Add pause text
		var pauseText = new Text2('GAME PAUSED', {
			size: 120,
			fill: 0xFFFFFF
		});
		pauseText.anchor.set(0.5, 0.5);
		pauseText.x = 0;
		pauseText.y = -50;
		pauseOverlay.addChild(pauseText);
		// Add instruction text
		var instructionText = new Text2('CLICK PAUSE BUTTON TO RESUME', {
			size: 50,
			fill: 0x00FF00
		});
		instructionText.anchor.set(0.5, 0.5);
		instructionText.x = 0;
		instructionText.y = 50;
		pauseOverlay.addChild(instructionText);
	} else {
		// Remove pause overlay
		if (pauseOverlay) {
			pauseOverlay.destroy();
			pauseOverlay = null;
		}
	}
}
// Add orange background
var orangeBackground = game.addChild(LK.getAsset('orangeBackground', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
}));
// Create wall
wall = game.addChild(new Wall());
wall.x = 1024;
wall.y = 1800;
// Create player
player = game.addChild(new Player());
player.x = getLaneX(1);
player.y = 2200;
// Create UI
var scoreTxt = new Text2('SCORE: 0', {
	size: 70,
	fill: 0x00FF00
});
scoreTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(scoreTxt);
scoreTxt.x = 120;
scoreTxt.y = 20;
var killsTxt = new Text2('KILLS: 0', {
	size: 70,
	fill: 0xFF0080
});
killsTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(killsTxt);
killsTxt.y = 20;
// Wall health bar
var wallHealthBar = new Text2('WALL: 100/100', {
	size: 60,
	fill: 0x00CCFF
});
wallHealthBar.anchor.set(0.5, 0);
LK.gui.top.addChild(wallHealthBar);
wallHealthBar.y = 80;
// Pause button
var pauseBtn = LK.getAsset('pauseButton', {
	anchorX: 0.5,
	anchorY: 0.5
});
LK.gui.topRight.addChild(pauseBtn);
pauseBtn.x = -100;
pauseBtn.y = 200;
var pauseTxt = new Text2('⏸', {
	size: 60,
	fill: 0xFFFFFF
});
pauseTxt.anchor.set(0.5, 0.5);
pauseBtn.addChild(pauseTxt);
// Control buttons
var leftBtn = new Text2('◀', {
	size: 130,
	fill: 0xFFFF00
});
leftBtn.anchor.set(0.5, 0.5);
LK.gui.bottomLeft.addChild(leftBtn);
leftBtn.x = 200;
leftBtn.y = -150;
var rightBtn = new Text2('▶', {
	size: 130,
	fill: 0xFFFF00
});
rightBtn.anchor.set(0.5, 0.5);
LK.gui.bottomRight.addChild(rightBtn);
rightBtn.x = -200;
rightBtn.y = -150;
var shootBtn = LK.getAsset('fireButton', {
	anchorX: 0.5,
	anchorY: 0.5
});
LK.gui.bottom.addChild(shootBtn);
shootBtn.y = -150;
// Button event handlers
leftBtn.down = function () {
	player.moveLeft();
};
rightBtn.down = function () {
	player.moveRight();
};
shootBtn.down = function () {
	player.shoot();
};
pauseBtn.down = function () {
	togglePause();
};
// Game update loop
game.update = function () {
	// Skip game logic if paused
	if (isPaused) {
		return;
	}
	// Update survival time and score
	survivalTime++;
	if (survivalTime % 60 === 0) {
		// Every second
		LK.setScore(LK.getScore() + 0);
		scoreTxt.setText('SCORE: ' + LK.getScore());
	}
	// Update wall health bar
	if (wall && !wall.isDestroyed) {
		var healthPercent = wall.health / wall.maxHealth;
		if (healthPercent > 0.6) {
			wallHealthBar.fill = 0x00FF00; // Green for healthy
		} else if (healthPercent > 0.3) {
			wallHealthBar.fill = 0xFFFF00; // Yellow for damaged
		} else {
			wallHealthBar.fill = 0xFF0000; // Red for critical
		}
		wallHealthBar.setText('WALL: ' + wall.health + '/' + wall.maxHealth);
	} else {
		wallHealthBar.fill = 0xFF0000;
		wallHealthBar.setText('WALL: DESTROYED');
	}
	// Increase game speed over time
	speedIncreaseTimer++;
	if (speedIncreaseTimer % 600 === 0) {
		// Every 10 seconds
		gameSpeed += 0.2;
		if (enemySpawnRate > 120) {
			enemySpawnRate -= 20;
		}
	}
	// Spawn enemies
	lastEnemySpawn++;
	if (lastEnemySpawn >= enemySpawnRate) {
		lastEnemySpawn = 0;
		var enemy = new EnemyCowboy();
		enemy.lane = Math.floor(Math.random() * 3);
		enemy.targetLane = Math.floor(Math.random() * 3); // Random lane targeting
		enemy.x = getLaneX(enemy.lane);
		enemy.y = -100;
		enemy.speed *= gameSpeed;
		enemies.push(enemy);
		game.addChild(enemy);
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		// Remove enemies that went off screen
		if (enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Check collision with wall - enemies cannot pass through
		if (wall && !wall.isDestroyed && enemy.intersects(wall)) {
			// Stop enemy movement when hitting wall
			enemy.speed = 0;
			// Deal damage to wall when enemy touches it
			if (enemy.lastWallDamage === undefined) {
				enemy.lastWallDamage = 0;
			}
			enemy.lastWallDamage++;
			if (enemy.lastWallDamage >= 30) {
				// Damage every 0.5 seconds
				wall.takeDamage(10);
				enemy.lastWallDamage = 0;
			}
		} else if (wall && wall.isDestroyed) {
			// If wall is destroyed, enemies can move normally
			enemy.speed = 3 * gameSpeed;
		}
	}
	// Update player bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		var bullet = playerBullets[i];
		// Remove bullets that went off screen
		if (bullet.y < -50) {
			bullet.destroy();
			playerBullets.splice(i, 1);
			continue;
		}
		// Check collision with enemies
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Enemy hit
				LK.getSound('enemyHit').play();
				killCount++;
				LK.setScore(LK.getScore() + 5);
				scoreTxt.setText('SCORE: ' + LK.getScore());
				killsTxt.setText('KILLS: ' + killCount);
				// Remove bullet and enemy
				bullet.destroy();
				playerBullets.splice(i, 1);
				enemy.destroy();
				enemies.splice(j, 1);
				break;
			}
		}
	}
	// Update enemy bullets
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		// Remove bullets that went off screen
		if (bullet.y > 2800) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
			continue;
		}
		// Check collision with wall (bullets pass through but don't damage)
		if (wall && !wall.isDestroyed && bullet.intersects(wall)) {
			// Enemy bullets pass through wall without stopping
		}
		// Check collision with player
		if (bullet.intersects(player)) {
			// Player hit - game over
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -241,19 +241,20 @@
 var lastEnemySpawn = 0;
 var enemySpawnRate = 200; // 5 seconds at 60fps
 var speedIncreaseTimer = 0;
 var wall;
-var gamePaused = false;
+var isPaused = false;
+var pauseOverlay = null;
 // Lane positions
 function getLaneX(lane) {
 	var laneWidth = 2048 / 3;
 	return laneWidth * lane + laneWidth / 2;
 }
 function togglePause() {
-	gamePaused = !gamePaused;
-	if (gamePaused) {
+	isPaused = !isPaused;
+	if (isPaused) {
 		// Create pause overlay
-		var pauseOverlay = LK.getAsset('orangeBackground', {
+		pauseOverlay = LK.getAsset('orangeBackground', {
 			anchorX: 0.5,
 			anchorY: 0.5
 		});
 		pauseOverlay.alpha = 0.8;
@@ -261,9 +262,8 @@
 		pauseOverlay.y = 1366;
 		pauseOverlay.scaleX = 0.6;
 		pauseOverlay.scaleY = 0.4;
 		game.addChild(pauseOverlay);
-		pauseOverlay.name = 'pauseOverlay';
 		// Add pause text
 		var pauseText = new Text2('GAME PAUSED', {
 			size: 120,
 			fill: 0xFFFFFF
@@ -282,14 +282,11 @@
 		instructionText.y = 50;
 		pauseOverlay.addChild(instructionText);
 	} else {
 		// Remove pause overlay
-		for (var i = game.children.length - 1; i >= 0; i--) {
-			var child = game.children[i];
-			if (child.name === 'pauseOverlay') {
-				child.destroy();
-				break;
-			}
+		if (pauseOverlay) {
+			pauseOverlay.destroy();
+			pauseOverlay = null;
 		}
 	}
 }
 // Add orange background
@@ -383,9 +380,9 @@
 };
 // Game update loop
 game.update = function () {
 	// Skip game logic if paused
-	if (gamePaused) {
+	if (isPaused) {
 		return;
 	}
 	// Update survival time and score
 	survivalTime++;