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

/**** 
* Classes
****/ 
var Drone = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('drone', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1.5;
	self.direction = 1;
	self.fireTimer = 0;
	self.fireRate = 45;
	self.update = function () {
		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
		self.x += self.speed * self.direction * speedMultiplier;
		self.y += self.speed * 0.5 * speedMultiplier;
		if (self.x <= 50 || self.x >= 1998) {
			self.direction *= -1;
		}
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			var bullet = new EnemyBullet();
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.targetX = viggen.x;
			bullet.targetY = viggen.y;
			bullet.age = 0;
			game.addChild(bullet);
			enemyBullets.push(bullet);
		}
		graphics.rotation += 0.05;
	};
	return self;
});
var EnemyBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('enemyBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		self.age = (self.age || 0) + 1;
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
			self.x += dx / distance * self.speed * speedMultiplier;
			self.y += dy / distance * self.speed * speedMultiplier;
		}
	};
	return self;
});
var MiG23 = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('mig23', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.fireTimer = 0;
	self.fireRate = 60;
	self.interceptorType = 'mig23';
	self.scoreValue = 100;
	self.update = function () {
		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
		self.y += self.speed * speedMultiplier;
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			var bullet = new EnemyBullet();
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.targetX = viggen.x;
			bullet.targetY = viggen.y;
			bullet.age = 0;
			game.addChild(bullet);
			enemyBullets.push(bullet);
		}
	};
	return self;
});
var Powerup = Container.expand(function () {
	var self = Container.call(this);
	self.powerupType = 'speed'; // 'speed', 'shield', 'rapidfire'
	self.speed = 2;
	self.bobOffset = 0;
	self.bobSpeed = 0.1;
	self.setPowerupType = function (type) {
		self.powerupType = type;
		if (self.graphics) {
			self.removeChild(self.graphics);
		}
		var assetName = 'powerupSpeed';
		if (type === 'shield') {
			assetName = 'powerupShield';
		} else if (type === 'rapidfire') {
			assetName = 'powerupRapidFire';
		}
		self.graphics = self.attachAsset(assetName, {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	self.update = function () {
		self.y += self.speed;
		self.bobOffset += self.bobSpeed;
		self.graphics.y = Math.sin(self.bobOffset) * 10;
		self.graphics.rotation += 0.05;
	};
	return self;
});
var SAMMissile = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('samMissile', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 6;
	self.targetX = 0;
	self.targetY = 0;
	self.update = function () {
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance > 0) {
			self.x += dx / distance * self.speed;
			self.y += dy / distance * self.speed;
		}
		graphics.rotation += 0.1;
	};
	return self;
});
var SAMSite = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('sam', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.fireTimer = 0;
	self.fireRate = 90;
	self.update = function () {
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			var missile = new SAMMissile();
			missile.x = self.x;
			missile.y = self.y;
			missile.targetX = viggen.x;
			missile.targetY = viggen.y;
			game.addChild(missile);
			samMissiles.push(missile);
			LK.getSound('missile').play();
		}
	};
	return self;
});
var SSR = Container.expand(function () {
	var self = Container.call(this);
	self.name = '';
	self.difficultyMultiplier = 1.0;
	self.enemySpeedMultiplier = 1.0;
	self.spawnRateMultiplier = 1.0;
	self.scoreMultiplier = 1.0;
	self.backgroundColor = 0x1a1a2e;
	self.description = '';
	self.setSSRData = function (data) {
		self.name = data.name;
		self.difficultyMultiplier = data.difficultyMultiplier;
		self.enemySpeedMultiplier = data.enemySpeedMultiplier;
		self.spawnRateMultiplier = data.spawnRateMultiplier;
		self.scoreMultiplier = data.scoreMultiplier;
		self.backgroundColor = data.backgroundColor;
		self.description = data.description;
		if (self.graphics) {
			self.removeChild(self.graphics);
		}
		self.graphics = self.attachAsset(data.assetName, {
			anchorX: 0.5,
			anchorY: 0.5
		});
	};
	return self;
});
var Su15 = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('su15', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2.5;
	self.fireTimer = 0;
	self.fireRate = 45;
	self.interceptorType = 'su15';
	self.scoreValue = 150;
	self.update = function () {
		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
		self.y += self.speed * speedMultiplier;
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			// Su-15 fires two bullets
			for (var i = 0; i < 2; i++) {
				var bullet = new EnemyBullet();
				bullet.x = self.x + (i === 0 ? -10 : 10);
				bullet.y = self.y;
				bullet.targetX = viggen.x;
				bullet.targetY = viggen.y;
				bullet.age = 0;
				game.addChild(bullet);
				enemyBullets.push(bullet);
			}
		}
	};
	return self;
});
var Viggen = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('viggen', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});
var ViggenBullet = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('viggenBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 8 + (upgrades.bulletSpeed - 1) * 2;
	self.damage = upgrades.bulletDamage;
	self.update = function () {
		self.y -= self.speed;
	};
	return self;
});
var Yak38 = Container.expand(function () {
	var self = Container.call(this);
	var graphics = self.attachAsset('yak38', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 1.5;
	self.fireTimer = 0;
	self.fireRate = 90;
	self.interceptorType = 'yak38';
	self.scoreValue = 80;
	self.sideMovement = 0;
	self.update = function () {
		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
		self.y += self.speed * speedMultiplier;
		// Yak-38 has slight side-to-side movement
		self.sideMovement += 0.05;
		self.x += Math.sin(self.sideMovement) * 0.8;
		self.fireTimer++;
		if (self.fireTimer >= self.fireRate) {
			self.fireTimer = 0;
			var bullet = new EnemyBullet();
			bullet.x = self.x;
			bullet.y = self.y;
			bullet.targetX = viggen.x;
			bullet.targetY = viggen.y;
			bullet.age = 0;
			game.addChild(bullet);
			enemyBullets.push(bullet);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x1a1a2e
});

/**** 
* Game Code
****/ 
var viggen = game.addChild(new Viggen());
viggen.x = 1024;
viggen.y = 2400;
var shieldEffect = null;
// Upgrade system variables
var upgradeMenuOpen = false;
var upgradeButton = null;
var upgradeMenu = null;
var upgrades = {
	fireRate: storage.fireRateLevel || 1,
	bulletSpeed: storage.bulletSpeedLevel || 1,
	bulletDamage: storage.bulletDamageLevel || 1,
	shieldDuration: storage.shieldDurationLevel || 1
};
var upgradeCosts = {
	fireRate: [100, 250, 500, 1000, 2000],
	bulletSpeed: [150, 300, 600, 1200, 2400],
	bulletDamage: [200, 400, 800, 1600, 3200],
	shieldDuration: [300, 600, 1200, 2400, 4800]
};
var upgradeTexts = [];
// SSR Travel System
var currentSSR = null;
var ssrMenuOpen = false;
var ssrButton = null;
var ssrMenu = null;
var ssrUnlocked = {
	ukraine: true,
	russia: storage.russiaUnlocked || false,
	kazakh: storage.kazakhUnlocked || false,
	belarus: storage.belarusUnlocked || false
};
// Enemy Codex System
var codexMenuOpen = false;
var codexMenu = null;
var enemiesEncountered = {
	mig23: storage.mig23Encountered || false,
	su15: storage.su15Encountered || false,
	yak38: storage.yak38Encountered || false,
	drone: storage.droneEncountered || false,
	samSite: storage.samSiteEncountered || false
};
var enemyCodexData = {
	mig23: {
		name: 'MiG-23 Flogger',
		description: 'Standard Soviet interceptor. Fast attack aircraft with guided missiles. Flies straight down and fires single tracking bullets.',
		threat: 'Medium',
		speed: 'Fast',
		fireRate: 'Medium',
		health: '1 Hit',
		tips: 'Predictable flight path makes them easy targets',
		assetName: 'mig23'
	},
	su15: {
		name: 'Su-15 Flagon',
		description: 'Heavy interceptor with twin cannons. Faster than MiG-23 and fires dual tracking bullets simultaneously.',
		threat: 'High',
		speed: 'Very Fast',
		fireRate: 'Fast',
		health: '1 Hit',
		tips: 'Dual fire pattern - dodge sideways to avoid both bullets',
		assetName: 'su15'
	},
	yak38: {
		name: 'Yak-38 Forger',
		description: 'VTOL light interceptor with erratic movement. Slower but unpredictable side-to-side flight pattern.',
		threat: 'Medium-Low',
		speed: 'Slow',
		fireRate: 'Slow',
		health: '1 Hit',
		tips: 'Unpredictable movement but slower fire rate. Lead your shots.',
		assetName: 'yak38'
	},
	drone: {
		name: 'Reconnaissance Drone',
		description: 'Agile unmanned aircraft with side-to-side movement. Fires tracking bullets while weaving.',
		threat: 'High',
		speed: 'Medium',
		fireRate: 'Fast',
		health: '1 Hit',
		tips: 'Unpredictable movement pattern. Lead your shots.',
		assetName: 'drone'
	},
	samSite: {
		name: 'SA-6 SAM Site',
		description: 'Surface-to-Air Missile launcher. Fires homing missiles that track your position.',
		threat: 'Very High',
		speed: 'Stationary',
		fireRate: 'Slow',
		health: '1 Hit',
		tips: 'Priority target. Missiles are fast and accurate.',
		assetName: 'sam'
	}
};
var ssrData = {
	ukraine: {
		name: 'Ukrainian SSR',
		assetName: 'ssrUkraine',
		difficultyMultiplier: 1.0,
		enemySpeedMultiplier: 1.0,
		spawnRateMultiplier: 1.0,
		scoreMultiplier: 1.0,
		backgroundColor: 0x1a1a2e,
		description: 'Starting region with standard difficulty',
		unlockScore: 0
	},
	russia: {
		name: 'Russian SFSR',
		assetName: 'ssrRussia',
		difficultyMultiplier: 1.3,
		enemySpeedMultiplier: 1.2,
		spawnRateMultiplier: 1.1,
		scoreMultiplier: 1.5,
		backgroundColor: 0x2e1a1a,
		description: 'Harsh winter conditions, faster enemies',
		unlockScore: 2000
	},
	kazakh: {
		name: 'Kazakh SSR',
		assetName: 'ssrKazakh',
		difficultyMultiplier: 1.5,
		enemySpeedMultiplier: 1.1,
		spawnRateMultiplier: 1.3,
		scoreMultiplier: 2.0,
		backgroundColor: 0x2e2e1a,
		description: 'Desert warfare, more frequent spawns',
		unlockScore: 5000
	},
	belarus: {
		name: 'Byelorussian SSR',
		assetName: 'ssrBelarus',
		difficultyMultiplier: 1.8,
		enemySpeedMultiplier: 1.4,
		spawnRateMultiplier: 1.2,
		scoreMultiplier: 2.5,
		backgroundColor: 0x1a2e1a,
		description: 'Forest combat, elite enemy units',
		unlockScore: 10000
	}
};
var interceptors = [];
var mig23s = [];
var su15s = [];
var yak38s = [];
var samSites = [];
var drones = [];
var enemyBullets = [];
var samMissiles = [];
var viggenBullets = [];
var powerups = [];
var spawnTimer = 0;
var powerupSpawnTimer = 0;
var fireTimer = 0;
var difficultyTimer = 0;
var survivalTime = 0;
var baseSpawnRate = 180;
var currentSpawnRate = baseSpawnRate;
var dragNode = null;
var lastIntersecting = false;
var speedBoostActive = false;
var speedBoostTimer = 0;
var shieldActive = false;
var shieldTimer = 0;
var rapidFireActive = false;
var rapidFireTimer = 0;
var normalFireRate = 15;
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var timeTxt = new Text2('Time: 0s', {
	size: 50,
	fill: 0xFFFFFF
});
timeTxt.anchor.set(1, 0);
timeTxt.x = -20;
timeTxt.y = 20;
LK.gui.topRight.addChild(timeTxt);
upgradeButton = new Text2('UPGRADES', {
	size: 40,
	fill: 0x00ff00
});
upgradeButton.anchor.set(0.5, 0);
upgradeButton.x = 0;
upgradeButton.y = 100;
upgradeButton.interactive = true;
LK.gui.top.addChild(upgradeButton);
ssrButton = new Text2('TRAVEL', {
	size: 40,
	fill: 0x0088ff
});
ssrButton.anchor.set(0.5, 0);
ssrButton.x = 0;
ssrButton.y = 160;
ssrButton.interactive = true;
LK.gui.top.addChild(ssrButton);
var codexButton = new Text2('CODEX', {
	size: 40,
	fill: 0xff8800
});
codexButton.anchor.set(0.5, 0);
codexButton.x = 0;
codexButton.y = 220;
codexButton.interactive = true;
LK.gui.top.addChild(codexButton);
// Initialize with Ukrainian SSR
currentSSR = new SSR();
currentSSR.setSSRData(ssrData.ukraine);
game.setBackgroundColor(currentSSR.backgroundColor);
function handleMove(x, y, obj) {
	if (dragNode) {
		var moveSpeed = speedBoostActive ? 1.5 : 1.0;
		var targetX = x;
		var targetY = y;
		if (speedBoostActive) {
			// Smoother movement with speed boost
			var dx = targetX - dragNode.x;
			var dy = targetY - dragNode.y;
			dragNode.x = Math.max(40, Math.min(2008, dragNode.x + dx * moveSpeed));
			dragNode.y = Math.max(60, Math.min(2672, dragNode.y + dy * moveSpeed));
		} else {
			dragNode.x = Math.max(40, Math.min(2008, targetX));
			dragNode.y = Math.max(60, Math.min(2672, targetY));
		}
	}
	// Check viggen bullets vs enemies
	for (var i = viggenBullets.length - 1; i >= 0; i--) {
		var bullet = viggenBullets[i];
		var hit = false;
		// Check vs interceptors
		for (var j = interceptors.length - 1; j >= 0; j--) {
			if (bullet.intersects(interceptors[j])) {
				LK.effects.flashObject(interceptors[j], 0xff0000, 200);
				var scoreValue = interceptors[j].scoreValue || 100;
				var interceptorType = interceptors[j].interceptorType;
				// Remove from specific type array
				if (interceptorType === 'mig23') {
					for (var k = mig23s.length - 1; k >= 0; k--) {
						if (mig23s[k] === interceptors[j]) {
							mig23s.splice(k, 1);
							break;
						}
					}
				} else if (interceptorType === 'su15') {
					for (var k = su15s.length - 1; k >= 0; k--) {
						if (su15s[k] === interceptors[j]) {
							su15s.splice(k, 1);
							break;
						}
					}
				} else if (interceptorType === 'yak38') {
					for (var k = yak38s.length - 1; k >= 0; k--) {
						if (yak38s[k] === interceptors[j]) {
							yak38s.splice(k, 1);
							break;
						}
					}
				}
				interceptors[j].destroy();
				interceptors.splice(j, 1);
				bullet.destroy();
				viggenBullets.splice(i, 1);
				var baseScore = scoreValue * bullet.damage;
				var ssrMultiplier = currentSSR ? currentSSR.scoreMultiplier : 1.0;
				LK.setScore(LK.getScore() + Math.floor(baseScore * ssrMultiplier));
				hit = true;
				break;
			}
		}
		if (hit) continue;
		// Check vs drones
		for (var j = drones.length - 1; j >= 0; j--) {
			if (bullet.intersects(drones[j])) {
				LK.effects.flashObject(drones[j], 0xff0000, 200);
				drones[j].destroy();
				drones.splice(j, 1);
				bullet.destroy();
				viggenBullets.splice(i, 1);
				var baseScore = 150 * bullet.damage;
				var ssrMultiplier = currentSSR ? currentSSR.scoreMultiplier : 1.0;
				LK.setScore(LK.getScore() + Math.floor(baseScore * ssrMultiplier));
				hit = true;
				break;
			}
		}
		if (hit) continue;
		// Check vs SAM sites
		for (var j = samSites.length - 1; j >= 0; j--) {
			if (bullet.intersects(samSites[j])) {
				LK.effects.flashObject(samSites[j], 0xff0000, 200);
				samSites[j].destroy();
				samSites.splice(j, 1);
				bullet.destroy();
				viggenBullets.splice(i, 1);
				var baseScore = 200 * bullet.damage;
				var ssrMultiplier = currentSSR ? currentSSR.scoreMultiplier : 1.0;
				LK.setScore(LK.getScore() + Math.floor(baseScore * ssrMultiplier));
				hit = true;
				break;
			}
		}
	}
	// Check viggen vs powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		var powerup = powerups[i];
		if (viggen.intersects(powerup)) {
			// Apply powerup effect
			if (powerup.powerupType === 'speed') {
				speedBoostActive = true;
				speedBoostTimer = 300; // 5 seconds at 60fps
				LK.effects.flashObject(viggen, 0x00ff00, 300);
			} else if (powerup.powerupType === 'shield') {
				shieldActive = true;
				shieldTimer = 600 + (upgrades.shieldDuration - 1) * 180; // Base 10s + upgrades
				if (!shieldEffect) {
					shieldEffect = LK.getAsset('powerupShield', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 2.5,
						scaleY: 2.5
					});
					shieldEffect.alpha = 0.3;
					viggen.addChild(shieldEffect);
				}
			} else if (powerup.powerupType === 'rapidfire') {
				rapidFireActive = true;
				rapidFireTimer = 450; // 7.5 seconds at 60fps
				LK.effects.flashObject(viggen, 0xff8800, 300);
			}
			LK.getSound('powerup').play();
			LK.setScore(LK.getScore() + 50);
			powerup.destroy();
			powerups.splice(i, 1);
		}
	}
}
game.move = handleMove;
game.down = function (x, y, obj) {
	dragNode = viggen;
	handleMove(x, y, obj);
};
game.up = function (x, y, obj) {
	dragNode = null;
};
upgradeButton.down = function (x, y, obj) {
	if (!upgradeMenuOpen) {
		openUpgradeMenu();
	} else {
		closeUpgradeMenu();
	}
};
ssrButton.down = function (x, y, obj) {
	if (!ssrMenuOpen) {
		openSSRMenu();
	} else {
		closeSSRMenu();
	}
};
codexButton.down = function (x, y, obj) {
	if (!codexMenuOpen) {
		openCodexMenu();
	} else {
		closeCodexMenu();
	}
};
function spawnInterceptor() {
	var interceptorType = Math.random();
	var interceptor;
	if (interceptorType < 0.5) {
		interceptor = new MiG23();
		mig23s.push(interceptor);
		markEnemyEncountered('mig23');
	} else if (interceptorType < 0.8) {
		interceptor = new Su15();
		su15s.push(interceptor);
		markEnemyEncountered('su15');
	} else {
		interceptor = new Yak38();
		yak38s.push(interceptor);
		markEnemyEncountered('yak38');
	}
	interceptor.x = Math.random() * 1848 + 100;
	interceptor.y = -100;
	game.addChild(interceptor);
	interceptors.push(interceptor);
}
function spawnSAMSite() {
	var sam = new SAMSite();
	sam.x = Math.random() * 1848 + 100;
	sam.y = Math.random() * 400 + 100;
	game.addChild(sam);
	samSites.push(sam);
	markEnemyEncountered('samSite');
}
function spawnDrone() {
	var drone = new Drone();
	drone.x = Math.random() * 1848 + 100;
	drone.y = -50;
	game.addChild(drone);
	drones.push(drone);
	markEnemyEncountered('drone');
}
function spawnPowerup() {
	var powerup = new Powerup();
	powerup.x = Math.random() * 1600 + 224;
	powerup.y = -50;
	var powerupTypes = ['speed', 'shield', 'rapidfire'];
	var randomType = powerupTypes[Math.floor(Math.random() * powerupTypes.length)];
	powerup.setPowerupType(randomType);
	game.addChild(powerup);
	powerups.push(powerup);
}
function openUpgradeMenu() {
	upgradeMenuOpen = true;
	upgradeButton.setText('CLOSE');
	upgradeMenu = new Container();
	upgradeMenu.x = 0;
	upgradeMenu.y = 0;
	game.addChild(upgradeMenu);
	var menuBg = LK.getAsset('sam', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 15,
		scaleY: 20
	});
	menuBg.x = 1024;
	menuBg.y = 1366;
	menuBg.alpha = 0.9;
	menuBg.tint = 0x000066;
	upgradeMenu.addChild(menuBg);
	var titleText = new Text2('UPGRADES', {
		size: 80,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 1000;
	upgradeMenu.addChild(titleText);
	var currentScore = LK.getScore();
	var scoreText = new Text2('Score: ' + currentScore, {
		size: 50,
		fill: 0xFFFF00
	});
	scoreText.anchor.set(0.5, 0.5);
	scoreText.x = 1024;
	scoreText.y = 1100;
	upgradeMenu.addChild(scoreText);
	createUpgradeOption('Fire Rate', 'fireRate', 1200);
	createUpgradeOption('Bullet Speed', 'bulletSpeed', 1300);
	createUpgradeOption('Bullet Damage', 'bulletDamage', 1400);
	createUpgradeOption('Shield Duration', 'shieldDuration', 1500);
}
function createUpgradeOption(name, upgradeType, yPos) {
	var level = upgrades[upgradeType];
	var maxLevel = upgradeCosts[upgradeType].length;
	var cost = level < maxLevel ? upgradeCosts[upgradeType][level - 1] : 'MAX';
	var upgradeText = new Text2(name + ' Lv.' + level + ' - Cost: ' + cost, {
		size: 40,
		fill: level < maxLevel && LK.getScore() >= cost ? 0x00ff00 : 0xff6666
	});
	upgradeText.anchor.set(0.5, 0.5);
	upgradeText.x = 1024;
	upgradeText.y = yPos;
	upgradeText.interactive = true;
	upgradeMenu.addChild(upgradeText);
	upgradeTexts.push({
		text: upgradeText,
		type: upgradeType
	});
	if (level < maxLevel && LK.getScore() >= cost) {
		upgradeText.down = function () {
			buyUpgrade(upgradeType);
		};
	}
}
function buyUpgrade(upgradeType) {
	var level = upgrades[upgradeType];
	var maxLevel = upgradeCosts[upgradeType].length;
	var cost = upgradeCosts[upgradeType][level - 1];
	if (level < maxLevel && LK.getScore() >= cost) {
		LK.setScore(LK.getScore() - cost);
		upgrades[upgradeType]++;
		// Save to storage
		if (upgradeType === 'fireRate') storage.fireRateLevel = upgrades[upgradeType];else if (upgradeType === 'bulletSpeed') storage.bulletSpeedLevel = upgrades[upgradeType];else if (upgradeType === 'bulletDamage') storage.bulletDamageLevel = upgrades[upgradeType];else if (upgradeType === 'shieldDuration') storage.shieldDurationLevel = upgrades[upgradeType];
		scoreTxt.setText('Score: ' + LK.getScore());
		LK.getSound('powerup').play();
		closeUpgradeMenu();
	}
}
function closeUpgradeMenu() {
	upgradeMenuOpen = false;
	upgradeButton.setText('UPGRADES');
	if (upgradeMenu) {
		game.removeChild(upgradeMenu);
		upgradeMenu = null;
		upgradeTexts = [];
	}
}
function openSSRMenu() {
	ssrMenuOpen = true;
	ssrButton.setText('CLOSE');
	ssrMenu = new Container();
	ssrMenu.x = 0;
	ssrMenu.y = 0;
	game.addChild(ssrMenu);
	var menuBg = LK.getAsset('sam', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 15,
		scaleY: 20
	});
	menuBg.x = 1024;
	menuBg.y = 1366;
	menuBg.alpha = 0.9;
	menuBg.tint = 0x006666;
	ssrMenu.addChild(menuBg);
	var titleText = new Text2('SOVIET SOCIALIST REPUBLICS', {
		size: 60,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 900;
	ssrMenu.addChild(titleText);
	var currentText = new Text2('Current: ' + currentSSR.name, {
		size: 40,
		fill: 0xFFFF00
	});
	currentText.anchor.set(0.5, 0.5);
	currentText.x = 1024;
	currentText.y = 980;
	ssrMenu.addChild(currentText);
	var yPos = 1100;
	for (var ssrKey in ssrData) {
		createSSROption(ssrKey, ssrData[ssrKey], yPos);
		yPos += 100;
	}
	// Check for unlocks
	checkSSRUnlocks();
}
function createSSROption(ssrKey, data, yPos) {
	var isUnlocked = ssrUnlocked[ssrKey];
	var isCurrent = currentSSR.name === data.name;
	var statusText = isCurrent ? ' (CURRENT)' : isUnlocked ? ' - AVAILABLE' : ' - LOCKED (Score: ' + data.unlockScore + ')';
	var optionText = new Text2(data.name + statusText, {
		size: 35,
		fill: isCurrent ? 0xFFFF00 : isUnlocked ? 0x00ff00 : 0xff6666
	});
	optionText.anchor.set(0.5, 0.5);
	optionText.x = 1024;
	optionText.y = yPos;
	optionText.interactive = true;
	ssrMenu.addChild(optionText);
	var descText = new Text2(data.description, {
		size: 25,
		fill: 0xCCCCCC
	});
	descText.anchor.set(0.5, 0.5);
	descText.x = 1024;
	descText.y = yPos + 30;
	ssrMenu.addChild(descText);
	if (isUnlocked && !isCurrent) {
		optionText.down = function () {
			travelToSSR(ssrKey);
		};
	}
}
function travelToSSR(ssrKey) {
	var data = ssrData[ssrKey];
	currentSSR.setSSRData(data);
	game.setBackgroundColor(currentSSR.backgroundColor);
	LK.getSound('travel').play();
	LK.effects.flashScreen(0x00ffff, 500);
	// Reset some game state for new region
	spawnTimer = 0;
	currentSpawnRate = Math.floor(baseSpawnRate / currentSSR.spawnRateMultiplier);
	closeSSRMenu();
}
function closeSSRMenu() {
	ssrMenuOpen = false;
	ssrButton.setText('TRAVEL');
	if (ssrMenu) {
		game.removeChild(ssrMenu);
		ssrMenu = null;
	}
}
function checkSSRUnlocks() {
	var currentScore = LK.getScore();
	for (var ssrKey in ssrData) {
		if (!ssrUnlocked[ssrKey] && currentScore >= ssrData[ssrKey].unlockScore) {
			ssrUnlocked[ssrKey] = true;
			// Save unlock status
			if (ssrKey === 'russia') storage.russiaUnlocked = true;else if (ssrKey === 'kazakh') storage.kazakhUnlocked = true;else if (ssrKey === 'belarus') storage.belarusUnlocked = true;
			LK.effects.flashScreen(0x00ff00, 300);
		}
	}
}
function openCodexMenu() {
	codexMenuOpen = true;
	codexButton.setText('CLOSE');
	codexMenu = new Container();
	codexMenu.x = 0;
	codexMenu.y = 0;
	game.addChild(codexMenu);
	var menuBg = LK.getAsset('sam', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 15,
		scaleY: 20
	});
	menuBg.x = 1024;
	menuBg.y = 1366;
	menuBg.alpha = 0.9;
	menuBg.tint = 0x660066;
	codexMenu.addChild(menuBg);
	var titleText = new Text2('ENEMY CODEX', {
		size: 80,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 900;
	codexMenu.addChild(titleText);
	var instructionText = new Text2('Encounter enemies to unlock their data', {
		size: 35,
		fill: 0xCCCCCC
	});
	instructionText.anchor.set(0.5, 0.5);
	instructionText.x = 1024;
	instructionText.y = 980;
	codexMenu.addChild(instructionText);
	var yPos = 1100;
	for (var enemyKey in enemyCodexData) {
		createCodexEntry(enemyKey, enemyCodexData[enemyKey], yPos);
		yPos += 200;
	}
}
function createCodexEntry(enemyKey, data, yPos) {
	var isEncountered = enemiesEncountered[enemyKey];
	var nameText = new Text2(isEncountered ? data.name : '??? CLASSIFIED ???', {
		size: 45,
		fill: isEncountered ? 0x00ff00 : 0x666666
	});
	nameText.anchor.set(0.5, 0.5);
	nameText.x = 1024;
	nameText.y = yPos;
	codexMenu.addChild(nameText);
	if (isEncountered) {
		var descText = new Text2(data.description, {
			size: 30,
			fill: 0xFFFFFF
		});
		descText.anchor.set(0.5, 0.5);
		descText.x = 1024;
		descText.y = yPos + 40;
		codexMenu.addChild(descText);
		var statsText = new Text2('Threat: ' + data.threat + ' | Speed: ' + data.speed + ' | Fire Rate: ' + data.fireRate, {
			size: 25,
			fill: 0xFFFF88
		});
		statsText.anchor.set(0.5, 0.5);
		statsText.x = 1024;
		statsText.y = yPos + 75;
		codexMenu.addChild(statsText);
		var tipsText = new Text2('Tips: ' + data.tips, {
			size: 25,
			fill: 0x88FF88
		});
		tipsText.anchor.set(0.5, 0.5);
		tipsText.x = 1024;
		tipsText.y = yPos + 105;
		codexMenu.addChild(tipsText);
	} else {
		var lockedText = new Text2('Encounter this enemy type to unlock data', {
			size: 25,
			fill: 0x666666
		});
		lockedText.anchor.set(0.5, 0.5);
		lockedText.x = 1024;
		lockedText.y = yPos + 40;
		codexMenu.addChild(lockedText);
	}
}
function closeCodexMenu() {
	codexMenuOpen = false;
	codexButton.setText('CODEX');
	if (codexMenu) {
		game.removeChild(codexMenu);
		codexMenu = null;
	}
}
function markEnemyEncountered(enemyType) {
	if (!enemiesEncountered[enemyType]) {
		enemiesEncountered[enemyType] = true;
		// Save to storage
		if (enemyType === 'mig23') storage.mig23Encountered = true;else if (enemyType === 'su15') storage.su15Encountered = true;else if (enemyType === 'yak38') storage.yak38Encountered = true;else if (enemyType === 'drone') storage.droneEncountered = true;else if (enemyType === 'samSite') storage.samSiteEncountered = true;
		// Flash effect for discovery
		LK.effects.flashScreen(0x00ffff, 200);
	}
}
function checkCollisions() {
	if (shieldActive) {
		// Shield protects from all damage
		return;
	}
	for (var i = 0; i < enemyBullets.length; i++) {
		if (viggen.intersects(enemyBullets[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.getSound('explosion').play();
			LK.showGameOver();
			return;
		}
	}
	for (var i = 0; i < samMissiles.length; i++) {
		if (viggen.intersects(samMissiles[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.getSound('explosion').play();
			LK.showGameOver();
			return;
		}
	}
	for (var i = 0; i < interceptors.length; i++) {
		if (viggen.intersects(interceptors[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.getSound('explosion').play();
			LK.showGameOver();
			return;
		}
	}
	for (var i = 0; i < drones.length; i++) {
		if (viggen.intersects(drones[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.getSound('explosion').play();
			LK.showGameOver();
			return;
		}
	}
}
function cleanupOffscreenEntities() {
	for (var i = interceptors.length - 1; i >= 0; i--) {
		if (interceptors[i].y > 2800) {
			var interceptorType = interceptors[i].interceptorType;
			// Remove from specific type array
			if (interceptorType === 'mig23') {
				for (var k = mig23s.length - 1; k >= 0; k--) {
					if (mig23s[k] === interceptors[i]) {
						mig23s.splice(k, 1);
						break;
					}
				}
			} else if (interceptorType === 'su15') {
				for (var k = su15s.length - 1; k >= 0; k--) {
					if (su15s[k] === interceptors[i]) {
						su15s.splice(k, 1);
						break;
					}
				}
			} else if (interceptorType === 'yak38') {
				for (var k = yak38s.length - 1; k >= 0; k--) {
					if (yak38s[k] === interceptors[i]) {
						yak38s.splice(k, 1);
						break;
					}
				}
			}
			interceptors[i].destroy();
			interceptors.splice(i, 1);
		}
	}
	for (var i = drones.length - 1; i >= 0; i--) {
		if (drones[i].y > 2800) {
			drones[i].destroy();
			drones.splice(i, 1);
		}
	}
	for (var i = enemyBullets.length - 1; i >= 0; i--) {
		var bullet = enemyBullets[i];
		if (bullet.x < -20 || bullet.x > 2068 || bullet.y < -20 || bullet.y > 2752 || bullet.age && bullet.age > 300) {
			bullet.destroy();
			enemyBullets.splice(i, 1);
		}
	}
	for (var i = samMissiles.length - 1; i >= 0; i--) {
		var missile = samMissiles[i];
		if (missile.x < -50 || missile.x > 2098 || missile.y < -50 || missile.y > 2782) {
			missile.destroy();
			samMissiles.splice(i, 1);
		}
	}
	for (var i = samSites.length - 1; i >= 0; i--) {
		if (samSites[i].y > 2800 || samSites[i].x < -100 || samSites[i].x > 2148) {
			samSites[i].destroy();
			samSites.splice(i, 1);
		}
	}
	// Clean up viggen bullets
	for (var i = viggenBullets.length - 1; i >= 0; i--) {
		if (viggenBullets[i].y < -50) {
			viggenBullets[i].destroy();
			viggenBullets.splice(i, 1);
		}
	}
	// Clean up powerups
	for (var i = powerups.length - 1; i >= 0; i--) {
		if (powerups[i].y > 2800) {
			powerups[i].destroy();
			powerups.splice(i, 1);
		}
	}
}
game.update = function () {
	survivalTime++;
	difficultyTimer++;
	spawnTimer++;
	if (LK.ticks % 60 === 0) {
		var timeInSeconds = Math.floor(survivalTime / 60);
		timeTxt.setText('Time: ' + timeInSeconds + 's');
		var score = timeInSeconds * 10 + Math.floor(survivalTime / 6);
		LK.setScore(score);
		scoreTxt.setText('Score: ' + score);
	}
	if (difficultyTimer >= 300) {
		difficultyTimer = 0;
		currentSpawnRate = Math.max(60, currentSpawnRate - 10);
	}
	// Apply SSR spawn rate multiplier
	var ssrSpawnRate = currentSSR ? Math.floor(currentSpawnRate / currentSSR.spawnRateMultiplier) : currentSpawnRate;
	if (spawnTimer >= ssrSpawnRate) {
		spawnTimer = 0;
		var spawnType = Math.random();
		if (spawnType < 0.4) {
			spawnInterceptor();
		} else if (spawnType < 0.9) {
			spawnDrone();
		} else {
			spawnSAMSite();
		}
	}
	// Check for SSR unlocks
	checkSSRUnlocks();
	// Spawn powerups occasionally
	powerupSpawnTimer++;
	if (powerupSpawnTimer >= 900) {
		// Every 15 seconds
		powerupSpawnTimer = 0;
		spawnPowerup();
	}
	// Update powerup effects
	if (speedBoostTimer > 0) {
		speedBoostTimer--;
		if (speedBoostTimer === 0) {
			speedBoostActive = false;
		}
	}
	if (shieldTimer > 0) {
		shieldTimer--;
		if (shieldTimer === 0) {
			shieldActive = false;
			if (shieldEffect) {
				viggen.removeChild(shieldEffect);
				shieldEffect = null;
			}
		}
	}
	if (rapidFireTimer > 0) {
		rapidFireTimer--;
		if (rapidFireTimer === 0) {
			rapidFireActive = false;
		}
	}
	// Fire viggen bullets
	fireTimer++;
	var upgradeFireRate = Math.max(5, normalFireRate - (upgrades.fireRate - 1) * 2);
	var currentFireRate = rapidFireActive ? Math.floor(upgradeFireRate / 3) : upgradeFireRate;
	if (fireTimer >= currentFireRate) {
		fireTimer = 0;
		var bullet = new ViggenBullet();
		bullet.x = viggen.x;
		bullet.y = viggen.y - 60;
		game.addChild(bullet);
		viggenBullets.push(bullet);
		LK.getSound('shoot').play();
	}
	checkCollisions();
	cleanupOffscreenEntities();
	if (enemyBullets.length > 200) {
		for (var i = 0; i < 50; i++) {
			if (enemyBullets[i]) {
				enemyBullets[i].destroy();
				enemyBullets.splice(i, 1);
			}
		}
	}
	if (samMissiles.length > 100) {
		for (var i = 0; i < 25; i++) {
			if (samMissiles[i]) {
				samMissiles[i].destroy();
				samMissiles.splice(i, 1);
			}
		}
	}
};
LK.playMusic('combat');

===================================================================
--- original.js
+++ change.js
@@ -61,17 +61,19 @@
 		}
 	};
 	return self;
 });
-var Interceptor = Container.expand(function () {
+var MiG23 = Container.expand(function () {
 	var self = Container.call(this);
-	var graphics = self.attachAsset('interceptor', {
+	var graphics = self.attachAsset('mig23', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 2;
 	self.fireTimer = 0;
 	self.fireRate = 60;
+	self.interceptorType = 'mig23';
+	self.scoreValue = 100;
 	self.update = function () {
 		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
 		self.y += self.speed * speedMultiplier;
 		self.fireTimer++;
@@ -190,8 +192,40 @@
 		});
 	};
 	return self;
 });
+var Su15 = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('su15', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 2.5;
+	self.fireTimer = 0;
+	self.fireRate = 45;
+	self.interceptorType = 'su15';
+	self.scoreValue = 150;
+	self.update = function () {
+		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
+		self.y += self.speed * speedMultiplier;
+		self.fireTimer++;
+		if (self.fireTimer >= self.fireRate) {
+			self.fireTimer = 0;
+			// Su-15 fires two bullets
+			for (var i = 0; i < 2; i++) {
+				var bullet = new EnemyBullet();
+				bullet.x = self.x + (i === 0 ? -10 : 10);
+				bullet.y = self.y;
+				bullet.targetX = viggen.x;
+				bullet.targetY = viggen.y;
+				bullet.age = 0;
+				game.addChild(bullet);
+				enemyBullets.push(bullet);
+			}
+		}
+	};
+	return self;
+});
 var Viggen = Container.expand(function () {
 	var self = Container.call(this);
 	var graphics = self.attachAsset('viggen', {
 		anchorX: 0.5,
@@ -211,8 +245,41 @@
 		self.y -= self.speed;
 	};
 	return self;
 });
+var Yak38 = Container.expand(function () {
+	var self = Container.call(this);
+	var graphics = self.attachAsset('yak38', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 1.5;
+	self.fireTimer = 0;
+	self.fireRate = 90;
+	self.interceptorType = 'yak38';
+	self.scoreValue = 80;
+	self.sideMovement = 0;
+	self.update = function () {
+		var speedMultiplier = currentSSR ? currentSSR.enemySpeedMultiplier : 1.0;
+		self.y += self.speed * speedMultiplier;
+		// Yak-38 has slight side-to-side movement
+		self.sideMovement += 0.05;
+		self.x += Math.sin(self.sideMovement) * 0.8;
+		self.fireTimer++;
+		if (self.fireTimer >= self.fireRate) {
+			self.fireTimer = 0;
+			var bullet = new EnemyBullet();
+			bullet.x = self.x;
+			bullet.y = self.y;
+			bullet.targetX = viggen.x;
+			bullet.targetY = viggen.y;
+			bullet.age = 0;
+			game.addChild(bullet);
+			enemyBullets.push(bullet);
+		}
+	};
+	return self;
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -258,23 +325,45 @@
 // Enemy Codex System
 var codexMenuOpen = false;
 var codexMenu = null;
 var enemiesEncountered = {
-	interceptor: storage.interceptorEncountered || false,
+	mig23: storage.mig23Encountered || false,
+	su15: storage.su15Encountered || false,
+	yak38: storage.yak38Encountered || false,
 	drone: storage.droneEncountered || false,
 	samSite: storage.samSiteEncountered || false
 };
 var enemyCodexData = {
-	interceptor: {
-		name: 'MiG-23 Interceptor',
-		description: 'Fast attack aircraft with guided missiles. Flies straight down and fires tracking bullets.',
+	mig23: {
+		name: 'MiG-23 Flogger',
+		description: 'Standard Soviet interceptor. Fast attack aircraft with guided missiles. Flies straight down and fires single tracking bullets.',
 		threat: 'Medium',
 		speed: 'Fast',
 		fireRate: 'Medium',
 		health: '1 Hit',
 		tips: 'Predictable flight path makes them easy targets',
-		assetName: 'interceptor'
+		assetName: 'mig23'
 	},
+	su15: {
+		name: 'Su-15 Flagon',
+		description: 'Heavy interceptor with twin cannons. Faster than MiG-23 and fires dual tracking bullets simultaneously.',
+		threat: 'High',
+		speed: 'Very Fast',
+		fireRate: 'Fast',
+		health: '1 Hit',
+		tips: 'Dual fire pattern - dodge sideways to avoid both bullets',
+		assetName: 'su15'
+	},
+	yak38: {
+		name: 'Yak-38 Forger',
+		description: 'VTOL light interceptor with erratic movement. Slower but unpredictable side-to-side flight pattern.',
+		threat: 'Medium-Low',
+		speed: 'Slow',
+		fireRate: 'Slow',
+		health: '1 Hit',
+		tips: 'Unpredictable movement but slower fire rate. Lead your shots.',
+		assetName: 'yak38'
+	},
 	drone: {
 		name: 'Reconnaissance Drone',
 		description: 'Agile unmanned aircraft with side-to-side movement. Fires tracking bullets while weaving.',
 		threat: 'High',
@@ -341,8 +430,11 @@
 		unlockScore: 10000
 	}
 };
 var interceptors = [];
+var mig23s = [];
+var su15s = [];
+var yak38s = [];
 var samSites = [];
 var drones = [];
 var enemyBullets = [];
 var samMissiles = [];
@@ -432,13 +524,38 @@
 		// Check vs interceptors
 		for (var j = interceptors.length - 1; j >= 0; j--) {
 			if (bullet.intersects(interceptors[j])) {
 				LK.effects.flashObject(interceptors[j], 0xff0000, 200);
+				var scoreValue = interceptors[j].scoreValue || 100;
+				var interceptorType = interceptors[j].interceptorType;
+				// Remove from specific type array
+				if (interceptorType === 'mig23') {
+					for (var k = mig23s.length - 1; k >= 0; k--) {
+						if (mig23s[k] === interceptors[j]) {
+							mig23s.splice(k, 1);
+							break;
+						}
+					}
+				} else if (interceptorType === 'su15') {
+					for (var k = su15s.length - 1; k >= 0; k--) {
+						if (su15s[k] === interceptors[j]) {
+							su15s.splice(k, 1);
+							break;
+						}
+					}
+				} else if (interceptorType === 'yak38') {
+					for (var k = yak38s.length - 1; k >= 0; k--) {
+						if (yak38s[k] === interceptors[j]) {
+							yak38s.splice(k, 1);
+							break;
+						}
+					}
+				}
 				interceptors[j].destroy();
 				interceptors.splice(j, 1);
 				bullet.destroy();
 				viggenBullets.splice(i, 1);
-				var baseScore = 100 * bullet.damage;
+				var baseScore = scoreValue * bullet.damage;
 				var ssrMultiplier = currentSSR ? currentSSR.scoreMultiplier : 1.0;
 				LK.setScore(LK.getScore() + Math.floor(baseScore * ssrMultiplier));
 				hit = true;
 				break;
@@ -540,14 +657,27 @@
 		closeCodexMenu();
 	}
 };
 function spawnInterceptor() {
-	var interceptor = new Interceptor();
+	var interceptorType = Math.random();
+	var interceptor;
+	if (interceptorType < 0.5) {
+		interceptor = new MiG23();
+		mig23s.push(interceptor);
+		markEnemyEncountered('mig23');
+	} else if (interceptorType < 0.8) {
+		interceptor = new Su15();
+		su15s.push(interceptor);
+		markEnemyEncountered('su15');
+	} else {
+		interceptor = new Yak38();
+		yak38s.push(interceptor);
+		markEnemyEncountered('yak38');
+	}
 	interceptor.x = Math.random() * 1848 + 100;
 	interceptor.y = -100;
 	game.addChild(interceptor);
 	interceptors.push(interceptor);
-	markEnemyEncountered('interceptor');
 }
 function spawnSAMSite() {
 	var sam = new SAMSite();
 	sam.x = Math.random() * 1848 + 100;
@@ -856,9 +986,9 @@
 function markEnemyEncountered(enemyType) {
 	if (!enemiesEncountered[enemyType]) {
 		enemiesEncountered[enemyType] = true;
 		// Save to storage
-		if (enemyType === 'interceptor') storage.interceptorEncountered = true;else if (enemyType === 'drone') storage.droneEncountered = true;else if (enemyType === 'samSite') storage.samSiteEncountered = true;
+		if (enemyType === 'mig23') storage.mig23Encountered = true;else if (enemyType === 'su15') storage.su15Encountered = true;else if (enemyType === 'yak38') storage.yak38Encountered = true;else if (enemyType === 'drone') storage.droneEncountered = true;else if (enemyType === 'samSite') storage.samSiteEncountered = true;
 		// Flash effect for discovery
 		LK.effects.flashScreen(0x00ffff, 200);
 	}
 }
@@ -902,8 +1032,32 @@
 }
 function cleanupOffscreenEntities() {
 	for (var i = interceptors.length - 1; i >= 0; i--) {
 		if (interceptors[i].y > 2800) {
+			var interceptorType = interceptors[i].interceptorType;
+			// Remove from specific type array
+			if (interceptorType === 'mig23') {
+				for (var k = mig23s.length - 1; k >= 0; k--) {
+					if (mig23s[k] === interceptors[i]) {
+						mig23s.splice(k, 1);
+						break;
+					}
+				}
+			} else if (interceptorType === 'su15') {
+				for (var k = su15s.length - 1; k >= 0; k--) {
+					if (su15s[k] === interceptors[i]) {
+						su15s.splice(k, 1);
+						break;
+					}
+				}
+			} else if (interceptorType === 'yak38') {
+				for (var k = yak38s.length - 1; k >= 0; k--) {
+					if (yak38s[k] === interceptors[i]) {
+						yak38s.splice(k, 1);
+						break;
+					}
+				}
+			}
 			interceptors[i].destroy();
 			interceptors.splice(i, 1);
 		}
 	}