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

/**** 
* Classes
****/ 
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedX = 0;
	self.speedY = 2;
	self.health = 1;
	self.update = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		// Apply isometric movement effect
		self.x += self.speedY * 0.5;
	};
	return self;
});
var HomingMissile = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('missile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var thruster = self.attachAsset('missileThrust', {
		anchorX: 0.5,
		anchorY: 0.0
	});
	thruster.y = graphics.height / 2;
	self.target = null;
	self.speed = 6;
	self.turnSpeed = 0.1;
	self.life = 300; // 5 seconds at 60fps
	self.update = function () {
		self.life--;
		if (self.life <= 0) {
			return;
		}
		// Thruster flickering effect
		thruster.scaleX = 0.6 + Math.random() * 0.8;
		thruster.scaleY = 0.6 + Math.random() * 0.8;
		thruster.alpha = 0.6 + Math.random() * 0.4;
		thruster.x = (Math.random() - 0.5) * 4;
		// Find target if we don't have one
		if (!self.target || !self.target.parent) {
			var availableEnemies = [];
			// Collect enemies that are not already targeted by other missiles
			for (var i = 0; i < enemies.length; i++) {
				var enemy = enemies[i];
				var alreadyTargeted = false;
				// Check if this enemy is already targeted by another missile
				for (var m = 0; m < missiles.length; m++) {
					if (missiles[m] !== self && missiles[m].target === enemy) {
						alreadyTargeted = true;
						break;
					}
				}
				if (!alreadyTargeted) {
					availableEnemies.push(enemy);
				}
			}
			// If no untargeted enemies available, allow targeting any enemy
			if (availableEnemies.length === 0) {
				availableEnemies = enemies.slice(); // Copy all enemies
			}
			// Select random target from available enemies
			if (availableEnemies.length > 0) {
				var randomIndex = Math.floor(Math.random() * availableEnemies.length);
				self.target = availableEnemies[randomIndex];
				// Add random pattern properties for approach
				self.patternTime = 0;
				self.patternAmplitude = 50 + Math.random() * 100; // Random curve amplitude
				self.patternFrequency = 0.05 + Math.random() * 0.1; // Random curve frequency
				self.patternOffset = Math.random() * Math.PI * 2; // Random phase offset
			}
		}
		// Move towards target
		if (self.target && self.target.parent) {
			self.patternTime = (self.patternTime || 0) + 1;
			var dx = self.target.x - self.x;
			var dy = self.target.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 5) {
				var targetAngle = Math.atan2(dy, dx);
				var currentAngle = Math.atan2(self.speedY || 0, self.speedX || -self.speed);
				// Add random pattern curve to the approach
				var patternCurve = Math.sin(self.patternTime * self.patternFrequency + self.patternOffset) * self.patternAmplitude;
				var perpAngle = targetAngle + Math.PI / 2; // Perpendicular to target direction
				var curveX = Math.cos(perpAngle) * patternCurve / distance;
				var curveY = Math.sin(perpAngle) * patternCurve / distance;
				// Apply curve offset to target direction
				var adjustedTargetX = self.target.x + curveX;
				var adjustedTargetY = self.target.y + curveY;
				var adjustedDx = adjustedTargetX - self.x;
				var adjustedDy = adjustedTargetY - self.y;
				var adjustedTargetAngle = Math.atan2(adjustedDy, adjustedDx);
				// Smooth turning towards adjusted target
				var angleDiff = adjustedTargetAngle - currentAngle;
				if (angleDiff > Math.PI) angleDiff -= Math.PI * 2;
				if (angleDiff < -Math.PI) angleDiff += Math.PI * 2;
				currentAngle += angleDiff * self.turnSpeed;
				self.speedX = Math.cos(currentAngle) * self.speed;
				self.speedY = Math.sin(currentAngle) * self.speed;
				graphics.rotation = currentAngle + Math.PI / 2;
				thruster.rotation = currentAngle + Math.PI / 2;
			} else {
				// Close to target, move directly
				self.speedX = dx / distance * self.speed;
				self.speedY = dy / distance * self.speed;
			}
		} else {
			// No target, move up
			if (!self.speedX) self.speedX = 0;
			if (!self.speedY) self.speedY = -self.speed;
		}
		self.x += self.speedX;
		self.y += self.speedY;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var thruster = self.attachAsset('thruster', {
		anchorX: 0.5,
		anchorY: 0.0
	});
	thruster.y = graphics.height / 2;
	self.health = 3;
	self.maxHealth = 3;
	self.shootCooldown = 0;
	self.invulnerable = 0;
	self.skillCooldown = 0;
	self.skillMaxCooldown = 420; // 7 seconds at 60fps
	self.update = function () {
		if (self.shootCooldown > 0) {
			self.shootCooldown--;
		}
		if (self.skillCooldown > 0) {
			self.skillCooldown--;
		}
		if (self.invulnerable > 0) {
			self.invulnerable--;
			graphics.alpha = self.invulnerable % 10 < 5 ? 0.5 : 1.0;
		} else {
			graphics.alpha = 1.0;
		}
		// Thruster flickering effect
		thruster.scaleX = 0.8 + Math.random() * 0.4;
		thruster.scaleY = 0.8 + Math.random() * 0.4;
		thruster.alpha = 0.7 + Math.random() * 0.3;
		thruster.x = (Math.random() - 0.5) * 8;
	};
	self.shoot = function () {
		if (self.shootCooldown <= 0 && bullets.length < 20) {
			var bullet = new PlayerBullet();
			bullet.x = self.x;
			bullet.y = self.y - graphics.height / 2;
			bullets.push(bullet);
			game.addChild(bullet);
			self.shootCooldown = 15;
			LK.getSound('shoot').play();
		}
	};
	self.useSpecialSkill = function () {
		if (self.skillCooldown <= 0 && enemies.length > 0) {
			var missileCount = 4 + Math.floor(Math.random() * 2); // 4-5 missiles
			var baseDelay = 0;
			for (var i = 0; i < missileCount; i++) {
				// Create missile with delay for sequence effect
				LK.setTimeout(function (index) {
					return function () {
						var missile = new HomingMissile();
						// Spread missiles horizontally
						var spreadWidth = 200;
						var xOffset = (index - (missileCount - 1) / 2) * (spreadWidth / (missileCount - 1));
						missile.x = self.x + xOffset;
						missile.y = self.y - graphics.height / 2;
						missiles.push(missile);
						game.addChild(missile);
					};
				}(i), baseDelay + i * 150); // 150ms delay between each missile
			}
			self.skillCooldown = self.skillMaxCooldown;
			LK.effects.flashObject(self, 0x00ffff, 300);
		}
	};
	self.takeDamage = function () {
		if (self.invulnerable <= 0) {
			self.health--;
			self.invulnerable = 120;
			LK.effects.flashObject(self, 0xff0000, 500);
			if (self.health <= 0) {
				LK.showGameOver();
			}
		}
	};
	return self;
});
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -8;
	self.update = function () {
		self.y += self.speed;
	};
	return self;
});
var PowerUp = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speedY = 3;
	self.bobOffset = Math.random() * Math.PI * 2;
	self.startY = 0;
	self.update = function () {
		self.y += self.speedY;
		// Apply isometric movement effect
		self.x += self.speedY * 0.5;
		// Bobbing animation
		graphics.y = Math.sin(LK.ticks * 0.1 + self.bobOffset) * 10;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x001122
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var enemies = [];
var bullets = [];
var missiles = [];
var powerups = [];
var enemySpawnTimer = 0;
var powerupSpawnTimer = 0;
var gameSpeed = 1;
var waveLevel = 1;
var lastHealthDisplay = 3;
// Movement variables
var moveLeft = false;
var moveRight = false;
var moveUp = false;
var moveDown = false;
var dragNode = null;
// Initialize player
player = game.addChild(new Player());
player.x = 1024;
player.y = 2200;
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0x00FFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 120;
scoreTxt.y = 50;
LK.gui.topLeft.addChild(scoreTxt);
// Health display
var healthTxt = new Text2('Health: 3', {
	size: 60,
	fill: 0xFF0000
});
healthTxt.anchor.set(0, 0);
healthTxt.x = 120;
healthTxt.y = 120;
LK.gui.topLeft.addChild(healthTxt);
// Wave display
var waveTxt = new Text2('Wave: 1', {
	size: 60,
	fill: 0xFFFF00
});
waveTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(waveTxt);
// Skill display
var skillTxt = new Text2('Skill: Ready', {
	size: 60,
	fill: 0x00FFFF
});
skillTxt.anchor.set(0.5, 0);
skillTxt.y = 50;
LK.gui.top.addChild(skillTxt);
// Touch controls
game.down = function (x, y, obj) {
	dragNode = true;
	player.shoot();
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
function handleMove(x, y, obj) {
	if (dragNode) {
		// Convert screen coordinates to game coordinates
		var gamePos = game.toLocal({
			x: x,
			y: y
		});
		// Smooth movement towards touch position
		var targetX = Math.max(100, Math.min(1948, gamePos.x));
		var targetY = Math.max(200, Math.min(2600, gamePos.y));
		var dx = targetX - player.x;
		var dy = targetY - player.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 20) {
			var speed = 8;
			player.x += dx / distance * speed;
			player.y += dy / distance * speed;
		}
	}
}
game.move = handleMove;
// Spawn enemy function
function spawnEnemy() {
	var enemy = new Enemy();
	// Random spawn position from edges with isometric consideration
	var side = Math.floor(Math.random() * 4);
	switch (side) {
		case 0:
			// Top
			enemy.x = Math.random() * 2048;
			enemy.y = -50;
			enemy.speedY = 2 + Math.random() * 2;
			break;
		case 1:
			// Right
			enemy.x = 2098;
			enemy.y = Math.random() * 1000;
			enemy.speedX = -2 - Math.random() * 2;
			enemy.speedY = 1 + Math.random();
			break;
		case 2:
			// Left
			enemy.x = -50;
			enemy.y = Math.random() * 1000;
			enemy.speedX = 2 + Math.random() * 2;
			enemy.speedY = 1 + Math.random();
			break;
		case 3:
			// Top-left diagonal (isometric style)
			enemy.x = -50;
			enemy.y = -50;
			enemy.speedX = 3 + Math.random() * 2;
			enemy.speedY = 3 + Math.random() * 2;
			break;
	}
	// Apply game speed multiplier
	enemy.speedX *= gameSpeed;
	enemy.speedY *= gameSpeed;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Spawn powerup function
function spawnPowerup() {
	var powerup = new PowerUp();
	powerup.x = Math.random() * 1800 + 124;
	powerup.y = -50;
	powerup.startY = powerup.y;
	powerups.push(powerup);
	game.addChild(powerup);
}
// Main game update
game.update = function () {
	// Auto-shoot
	if (LK.ticks % 20 === 0) {
		player.shoot();
	}
	// Auto-use special skill
	if (player.skillCooldown <= 0 && enemies.length > 0) {
		player.useSpecialSkill();
	}
	// Update skill display
	if (player.skillCooldown > 0) {
		skillTxt.setText('Skill: ' + Math.ceil(player.skillCooldown / 60) + 's');
		skillTxt.fill = 0x888888;
	} else {
		skillTxt.setText('Skill: Ready');
		skillTxt.fill = 0x00FFFF;
	}
	// Enemy spawning with limit
	enemySpawnTimer++;
	var spawnRate = Math.max(30 - Math.floor(waveLevel * 2), 10);
	if (enemySpawnTimer >= spawnRate && enemies.length < 15) {
		spawnEnemy();
		enemySpawnTimer = 0;
	}
	// Powerup spawning
	powerupSpawnTimer++;
	if (powerupSpawnTimer >= 600) {
		// Every 10 seconds
		spawnPowerup();
		powerupSpawnTimer = 0;
	}
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.lastY === undefined) bullet.lastY = bullet.y;
		// Remove bullets that go off screen (expanded bounds check)
		if (bullet.y < -100 || bullet.y > 2800 || bullet.x < -100 || bullet.x > 2148) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet-enemy collisions
		var hitEnemy = false;
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (bullet.intersects(enemies[j])) {
				// Enemy hit
				LK.setScore(LK.getScore() + 10);
				scoreTxt.setText('Score: ' + LK.getScore());
				// Create optimized fragmentation effect
				var enemy = enemies[j];
				var fragmentCount = 4;
				for (var f = 0; f < fragmentCount; f++) {
					var fragment = LK.getAsset('enemy', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.2,
						scaleY: 0.2
					});
					fragment.x = enemy.x + (Math.random() - 0.5) * 15;
					fragment.y = enemy.y + (Math.random() - 0.5) * 15;
					game.addChild(fragment);
					var angle = f / fragmentCount * Math.PI * 2;
					var distance = 60 + Math.random() * 40;
					var targetX = fragment.x + Math.cos(angle) * distance;
					var targetY = fragment.y + Math.sin(angle) * distance;
					tween(fragment, {
						x: targetX,
						y: targetY,
						alpha: 0,
						rotation: Math.random() * Math.PI * 2
					}, {
						duration: 500,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							if (fragment.parent) fragment.destroy();
						}
					});
				}
				enemy.destroy();
				enemies.splice(j, 1);
				// Destroy bullet
				bullet.destroy();
				bullets.splice(i, 1);
				LK.getSound('hit').play();
				hitEnemy = true;
				break;
			}
		}
		if (!hitEnemy) {
			bullet.lastY = bullet.y;
		}
	}
	// Update missiles
	for (var i = missiles.length - 1; i >= 0; i--) {
		var missile = missiles[i];
		// Remove missiles that expire or go off screen
		if (missile.life <= 0 || missile.y < -100 || missile.y > 2800 || missile.x < -100 || missile.x > 2148) {
			missile.destroy();
			missiles.splice(i, 1);
			continue;
		}
		// Check missile-enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (missile.intersects(enemies[j])) {
				// Enemy hit by missile
				LK.setScore(LK.getScore() + 15);
				scoreTxt.setText('Score: ' + LK.getScore());
				// Create explosion effect
				var enemy = enemies[j];
				var fragmentCount = 6;
				for (var f = 0; f < fragmentCount; f++) {
					var fragment = LK.getAsset('enemy', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 0.15,
						scaleY: 0.15
					});
					fragment.x = enemy.x + (Math.random() - 0.5) * 20;
					fragment.y = enemy.y + (Math.random() - 0.5) * 20;
					game.addChild(fragment);
					var angle = f / fragmentCount * Math.PI * 2;
					var distance = 80 + Math.random() * 50;
					var targetX = fragment.x + Math.cos(angle) * distance;
					var targetY = fragment.y + Math.sin(angle) * distance;
					tween(fragment, {
						x: targetX,
						y: targetY,
						alpha: 0,
						rotation: Math.random() * Math.PI * 2
					}, {
						duration: 600,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							if (fragment.parent) fragment.destroy();
						}
					});
				}
				enemy.destroy();
				enemies.splice(j, 1);
				missile.destroy();
				missiles.splice(i, 1);
				LK.getSound('hit').play();
				LK.effects.flashScreen(0xff6600, 200);
				break;
			}
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		var enemy = enemies[i];
		// Remove enemies that go off screen
		if (enemy.y > 2800 || enemy.x < -100 || enemy.x > 2148) {
			enemy.destroy();
			enemies.splice(i, 1);
			continue;
		}
		// Check player-enemy collision
		if (enemy.intersects(player)) {
			player.takeDamage();
			// Create optimized fragmentation effect
			var fragmentCount = 4;
			for (var f = 0; f < fragmentCount; f++) {
				var fragment = LK.getAsset('enemy', {
					anchorX: 0.5,
					anchorY: 0.5,
					scaleX: 0.2,
					scaleY: 0.2
				});
				fragment.x = enemy.x + (Math.random() - 0.5) * 15;
				fragment.y = enemy.y + (Math.random() - 0.5) * 15;
				game.addChild(fragment);
				var angle = f / fragmentCount * Math.PI * 2;
				var distance = 60 + Math.random() * 40;
				var targetX = fragment.x + Math.cos(angle) * distance;
				var targetY = fragment.y + Math.sin(angle) * distance;
				tween(fragment, {
					x: targetX,
					y: targetY,
					alpha: 0,
					rotation: Math.random() * Math.PI * 2
				}, {
					duration: 500,
					easing: tween.easeOut,
					onFinish: function onFinish() {
						if (fragment.parent) fragment.destroy();
					}
				});
			}
			enemy.destroy();
			enemies.splice(i, 1);
		}
	}
	// Update powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		// Remove powerups that go off screen
		if (powerup.y > 2800) {
			powerup.destroy();
			powerups.splice(i, 1);
			continue;
		}
		// Check player-powerup collision
		if (powerup.intersects(player)) {
			player.health = Math.min(player.health + 1, player.maxHealth);
			LK.getSound('powerup').play();
			LK.effects.flashObject(player, 0x00ff00, 300);
			powerup.destroy();
			powerups.splice(i, 1);
		}
	}
	// Update health display
	if (player.health !== lastHealthDisplay) {
		healthTxt.setText('Health: ' + player.health);
		lastHealthDisplay = player.health;
	}
	// Increase difficulty over time
	if (LK.ticks % 1800 === 0) {
		// Every 30 seconds
		waveLevel++;
		gameSpeed += 0.1;
		waveTxt.setText('Wave: ' + waveLevel);
		LK.effects.flashScreen(0x0000ff, 500);
	}
};

===================================================================
--- original.js
+++ change.js
@@ -108,8 +108,9 @@
 				currentAngle += angleDiff * self.turnSpeed;
 				self.speedX = Math.cos(currentAngle) * self.speed;
 				self.speedY = Math.sin(currentAngle) * self.speed;
 				graphics.rotation = currentAngle + Math.PI / 2;
+				thruster.rotation = currentAngle + Math.PI / 2;
 			} else {
 				// Close to target, move directly
 				self.speedX = dx / distance * self.speed;
 				self.speedY = dy / distance * self.speed;