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

/**** 
* Classes
****/ 
var EnemyAircraft = Container.expand(function (type) {
	var self = Container.call(this);
	var assetName = type || 'mig29';
	var aircraftGraphics = self.attachAsset(assetName, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = assetName;
	self.speed = 3;
	self.active = true;
	// Set point values based on aircraft type
	if (self.type === 'mig29') {
		self.points = 100;
		self.speed = 3;
	} else if (self.type === 'su27') {
		self.points = 150;
		self.speed = 2.5;
	} else if (self.type === 'tu95') {
		self.points = 200;
		self.speed = 2;
	}
	self.update = function () {
		if (!self.active) return;
		self.y += self.speed;
	};
	return self;
});
var Explosion = Container.expand(function () {
	var self = Container.call(this);
	var explosionGraphics = self.attachAsset('explosion', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lifetime = 20; // frames
	self.update = function () {
		self.lifetime--;
		self.alpha = self.lifetime / 20;
		self.scaleX = self.scaleY = (20 - self.lifetime) / 10;
	};
	return self;
});
var Missile = Container.expand(function () {
	var self = Container.call(this);
	var missileGraphics = self.attachAsset('missile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -12;
	self.active = true;
	self.update = function () {
		if (!self.active) return;
		self.y += self.speed;
	};
	return self;
});
var PlayerGripen = Container.expand(function () {
	var self = Container.call(this);
	var gripenGraphics = self.attachAsset('gripen', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8;
	self.active = true;
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
// Player aircraft - JAS Gripen (distinctive delta wing design)
// Enemy aircraft types
// Missiles
// Sound effects
var player;
var missiles = [];
var enemies = [];
var explosions = [];
var waveNumber = 1;
var enemiesSpawned = 0;
var enemiesInWave = 5;
var spawnTimer = 0;
var missileTimer = 0;
var waveTimer = 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 waveTxt = new Text2('Wave: 1', {
	size: 50,
	fill: 0xFFFFFF
});
waveTxt.anchor.set(1, 0);
LK.gui.topRight.addChild(waveTxt);
// Initialize player
player = new PlayerGripen();
player.x = 1024; // Center horizontally
player.y = 2500; // Near bottom of screen
game.addChild(player);
// Touch/mouse controls for player movement
var isDragging = false;
game.down = function (x, y, obj) {
	isDragging = true;
	player.x = x;
};
game.move = function (x, y, obj) {
	if (isDragging && player.active) {
		player.x = Math.max(60, Math.min(1988, x)); // Keep player on screen
	}
};
game.up = function (x, y, obj) {
	isDragging = false;
};
// Spawn enemy function
function spawnEnemy() {
	var enemyTypes = ['mig29', 'su27', 'tu95']; // Russian aircraft including Tu-95 bomber
	var randomType = enemyTypes[Math.floor(Math.random() * enemyTypes.length)];
	var enemy = new EnemyAircraft(randomType);
	enemy.x = Math.random() * 1800 + 124; // Random X position across screen
	enemy.y = -100; // Start above screen
	// Adjust speed based on wave
	enemy.speed += (waveNumber - 1) * 0.5;
	enemies.push(enemy);
	game.addChild(enemy);
	enemiesSpawned++;
}
// Fire missile function
function fireMissile() {
	if (!player.active) return;
	var missile = new Missile();
	missile.x = player.x;
	missile.y = player.y - 70;
	missiles.push(missile);
	game.addChild(missile);
	LK.getSound('missile_fire').play();
}
// Create explosion function
function createExplosion(x, y) {
	var explosion = new Explosion();
	explosion.x = x;
	explosion.y = y;
	explosions.push(explosion);
	game.addChild(explosion);
	LK.getSound('explosion').play();
}
// Update score display
function updateScore() {
	scoreTxt.setText('Score: ' + LK.getScore());
}
// Update wave display
function updateWave() {
	waveTxt.setText('Wave: ' + waveNumber);
}
// Main game update loop
game.update = function () {
	if (!player.active) return;
	// Fire missiles automatically
	missileTimer++;
	if (missileTimer >= 20) {
		// Fire every 20 ticks (3 times per second)
		fireMissile();
		missileTimer = 0;
	}
	// Spawn enemies
	spawnTimer++;
	var spawnRate = Math.max(60 - waveNumber * 5, 30); // Faster spawning each wave
	if (spawnTimer >= spawnRate && enemiesSpawned < enemiesInWave) {
		spawnEnemy();
		spawnTimer = 0;
	}
	// Check for missile-enemy collisions
	for (var m = missiles.length - 1; m >= 0; m--) {
		var missile = missiles[m];
		if (!missile.active) continue;
		// Remove missiles that go off screen
		if (missile.y < -50) {
			missile.destroy();
			missiles.splice(m, 1);
			continue;
		}
		// Check collision with enemies
		for (var e = enemies.length - 1; e >= 0; e--) {
			var enemy = enemies[e];
			if (!enemy.active) continue;
			if (missile.intersects(enemy)) {
				// Create explosion
				createExplosion(enemy.x, enemy.y);
				// Award points
				LK.setScore(LK.getScore() + enemy.points);
				updateScore();
				// Remove missile and enemy
				missile.active = false;
				enemy.active = false;
				missile.destroy();
				enemy.destroy();
				missiles.splice(m, 1);
				enemies.splice(e, 1);
				LK.getSound('enemy_destroyed').play();
				break;
			}
		}
	}
	// Update and check enemy collisions with player
	for (var e = enemies.length - 1; e >= 0; e--) {
		var enemy = enemies[e];
		if (!enemy.active) continue;
		// Remove enemies that go off screen
		if (enemy.y > 2800) {
			enemy.destroy();
			enemies.splice(e, 1);
			continue;
		}
		// Check collision with player
		if (enemy.intersects(player)) {
			// Game over
			createExplosion(player.x, player.y);
			player.active = false;
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 1000);
			return;
		}
	}
	// Update explosions
	for (var ex = explosions.length - 1; ex >= 0; ex--) {
		var explosion = explosions[ex];
		if (explosion.lifetime <= 0) {
			explosion.destroy();
			explosions.splice(ex, 1);
		}
	}
	// Check if wave is complete
	if (enemiesSpawned >= enemiesInWave && enemies.length === 0) {
		waveNumber++;
		enemiesSpawned = 0;
		enemiesInWave += 2; // More enemies each wave
		updateWave();
		// Brief pause between waves
		waveTimer = 120; // 2 second pause
	}
	// Handle wave timer
	if (waveTimer > 0) {
		waveTimer--;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -132,9 +132,9 @@
 	isDragging = false;
 };
 // Spawn enemy function
 function spawnEnemy() {
-	var enemyTypes = ['mig29', 'su27']; // Only Su-27 and MiG-29 attacking China
+	var enemyTypes = ['mig29', 'su27', 'tu95']; // Russian aircraft including Tu-95 bomber
 	var randomType = enemyTypes[Math.floor(Math.random() * enemyTypes.length)];
 	var enemy = new EnemyAircraft(randomType);
 	enemy.x = Math.random() * 1800 + 124; // Random X position across screen
 	enemy.y = -100; // Start above screen