/**** 
* Classes
****/ 
var EnemyProjectile = Container.expand(function (fireAngle) {
	var self = Container.call(this);
	self.bulletSprite = self.attachAsset('enemyBulletSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.angle = fireAngle; // Angle of movement
	self.speed = 10; // Enemy projectiles are a bit slower
	if (self.bulletSprite) {
		// Assuming the bullet shape is wider than tall, rotating by angle aligns its length with movement.
		self.bulletSprite.rotation = self.angle;
	}
	self.isOffScreen = false;
	self.update = function () {
		if (self.isOffScreen) return;
		if (typeof freezeEnemies !== 'undefined' && freezeEnemies) return; // Freeze enemy projectiles during card choice
		self.x += Math.cos(self.angle) * self.speed;
		self.y += Math.sin(self.angle) * self.speed;
		var gameWidth = 2048;
		var gameHeight = 2732;
		// Margin based on projectile size to ensure it's fully off-screen
		var margin = 50; // Default margin
		if (self.bulletSprite && (self.bulletSprite.width || self.bulletSprite.height)) {
			margin = Math.max(self.bulletSprite.width || 0, self.bulletSprite.height || 0) / 2 + 50;
		}
		if (self.x < -margin || self.x > gameWidth + margin || self.y < -margin || self.y > gameHeight + margin) {
			self.isOffScreen = true;
		}
	};
	return self;
});
// Orange rectangular bullet
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	self.fireCooldown = 180; // Fire every 3 seconds (180 ticks at 60FPS)
	self.fireTimer = Math.random() * self.fireCooldown; // Stagger initial firing
	self.enemyProjectileSpawnPoint = {
		x: 0,
		y: 0
	};
	self.hit = function () {
		if (self.isDestroyed) return; // Already destroyed
		self.health--;
		if (self.health <= 0) {
			self.isDestroyed = true;
			// Optionally, trigger a small visual effect here like a flash
			// LK.effects.flashObject(self, 0xffffff, 100);
		} else {
			// Optionally, visual effect for taking damage but not destroyed
			// LK.effects.flashObject(self, 0xffaaaa, 50);
		}
	};
	self.update = function () {
		if (self.isOffScreen || self.isDestroyed) return; // Don't update if off-screen or destroyed
		if (typeof freezeEnemies !== 'undefined' && freezeEnemies) return; // Freeze all enemy movement and firing during card choice
		// Target the player ship
		if (typeof playerShip !== 'undefined' && playerShip && !playerShip.isDestroyed) {
			var dx = playerShip.x - self.x;
			var dy = playerShip.y - self.y;
			// Calculate angle towards player
			var targetAngle = Math.atan2(dy, dx);
			// Update the enemy's angle to face the player
			self.angle = targetAngle;
			// Update sprite rotation to match the new angle
			// Assuming the ship sprite is designed "pointing up" (nose along its local -Y axis or top)
			// visual rotation = world angle + PI/2.
			if (self.shipSprite) {
				self.shipSprite.rotation = self.angle + Math.PI / 2;
			}
		}
		// If playerShip is not available or is destroyed, the enemy will continue in its current self.angle.
		self.lastX = self.x;
		self.lastY = self.y;
		// Prevent enemy from moving too close to the player
		var safeDistance = 120; // Minimum allowed distance between enemy and player
		var moveX = Math.cos(self.angle) * self.speed;
		var moveY = Math.sin(self.angle) * self.speed;
		if (typeof playerShip !== 'undefined' && playerShip && !playerShip.isDestroyed) {
			var dxToPlayer = self.x + moveX - playerShip.x;
			var dyToPlayer = self.y + moveY - playerShip.y;
			var distToPlayer = Math.sqrt(dxToPlayer * dxToPlayer + dyToPlayer * dyToPlayer);
			if (distToPlayer < safeDistance) {
				// If moving would bring us too close, do not move this frame
				moveX = 0;
				moveY = 0;
			}
		}
		self.x += moveX;
		self.y += moveY;
		// Update enemy projectile spawn point
		var shipAsset = self.shipSprite;
		if (shipAsset) {
			var noseDistance = shipAsset.height / 2; // Assuming front is along height axis from center
			self.enemyProjectileSpawnPoint.x = self.x + Math.cos(self.angle) * noseDistance;
			self.enemyProjectileSpawnPoint.y = self.y + Math.sin(self.angle) * noseDistance;
		}
		// Firing logic
		self.fireTimer--;
		if (self.fireTimer <= 0) {
			if (typeof EnemyProjectile !== 'undefined' && typeof enemyProjectiles !== 'undefined' && game && typeof game.addChild === 'function') {
				var newProjectile = new EnemyProjectile(self.angle); // Fire in the direction the ship is moving
				newProjectile.x = self.enemyProjectileSpawnPoint.x;
				newProjectile.y = self.enemyProjectileSpawnPoint.y;
				enemyProjectiles.push(newProjectile);
				game.addChild(newProjectile);
				self.fireTimer = self.fireCooldown; // Reset cooldown
			}
		}
		// Generalized off-screen check
		var gameWidth = 2048;
		var gameHeight = 2732;
		var marginWidth = self.shipSprite && self.shipSprite.width ? self.shipSprite.width / 2 + 50 : 100;
		var marginHeight = self.shipSprite && self.shipSprite.height ? self.shipSprite.height / 2 + 50 : 100;
		if (self.x < -marginWidth || self.x > gameWidth + marginWidth || self.y < -marginHeight || self.y > gameHeight + marginHeight) {
			self.isOffScreen = true;
		}
	};
	self.shipSprite = self.attachAsset('enemyShipSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.angle = Math.PI / 2; // Default angle: moving downwards (positive Y direction)
	if (self.shipSprite) {
		self.shipSprite.rotation = self.angle + Math.PI / 2;
	}
	self.speed = 4;
	self.isOffScreen = false;
	self.lastX = self.x;
	self.lastY = self.y;
	self.health = 1;
	self.isDestroyed = false;
	return self;
});
var FireButton = Container.expand(function () {
	var self = Container.call(this);
	self.buttonSprite = self.attachAsset('fireButtonSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lastFireTick = -1000; // Track last tick when fired
	self.down = function (x, y, obj) {
		// Prevent holding down for auto-fire: only allow firing if enough time has passed since last fire
		if (typeof LK !== 'undefined' && typeof LK.ticks !== 'undefined') {
			if (typeof self.lastFireTick === 'undefined') self.lastFireTick = -1000;
			// Only allow firing if at least fireButtonCooldown ticks have passed since last fire
			if (typeof fireButtonCooldown === 'undefined') fireButtonCooldown = 30;
			if (LK.ticks - self.lastFireTick < fireButtonCooldown) return;
		}
		// Only fire if player has ammo and not holding down for auto-fire
		if (typeof playerAmmo !== 'undefined' && playerAmmo > 0) {
			if (playerShip && typeof playerShip.currentAngle !== 'undefined' && typeof projectileSpawnPoint !== 'undefined' && playerProjectiles && PlayerProjectile) {
				var newProjectile = new PlayerProjectile(playerShip.currentAngle); // Pass the ship's current firing angle
				newProjectile.x = projectileSpawnPoint.x; // Set initial position from calculated spawn point
				newProjectile.y = projectileSpawnPoint.y;
				playerProjectiles.push(newProjectile);
				game.addChild(newProjectile); // Add projectiles to the main game stage
				playerAmmo = Math.max(0, playerAmmo - 1); // Decrease ammo by 1, never below 0
				// Removed ammo counter update as per requirements
				if (typeof LK !== 'undefined' && typeof LK.ticks !== 'undefined') {
					self.lastFireTick = LK.ticks;
				}
				// Play shot sound when firing
				if (typeof LK !== 'undefined' && typeof LK.getSound === 'function') {
					var shotSound = LK.getSound('Shot');
					if (shotSound && typeof shotSound.play === 'function') {
						shotSound.play();
					}
				}
			}
		}
	};
	return self;
});
var HealthRestore = Container.expand(function () {
	var self = Container.call(this);
	self.restoreSprite = self.attachAsset('healthRestoreSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Check for collision with player ship
		if (playerShip && !playerShip.isDestroyed && self.intersects(playerShip)) {
			if (playerShip.health < 3) {
				playerShip.health = Math.min(playerShip.health + 1, 3); // Restore health, max 3
				if (playerShip.shipSprite) {
					LK.effects.flashObject(playerShip.shipSprite, 0x00ff00, 150); // Flash green on health restore
				}
				// Update hearts display
				for (var i = 0; i < hearts.length; i++) {
					hearts[i].visible = i < playerShip.health;
				}
			}
			self.destroy();
		}
	};
	return self;
});
var Heart = Container.expand(function () {
	var self = Container.call(this);
	self.heartSprite = self.attachAsset('heartSprite', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 2
	});
	return self;
});
// Red circular fire button
var Joystick = Container.expand(function () {
	var self = Container.call(this);
	self.baseSprite = self.attachAsset('joystickBaseSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.knobSprite = self.attachAsset('joystickKnobSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Maximum distance the knob's center can move from the base's center
	self.radius = self.baseSprite.width / 2 - self.knobSprite.width / 2;
	if (self.radius <= 0) {
		// Ensure a sensible minimum radius
		self.radius = self.baseSprite.width > 0 ? self.baseSprite.width / 4 : 50; // Use 1/4 of base width or 50 if base has no width
	}
	self.isDragging = false;
	self.inputVector = {
		x: 0,
		y: 0
	}; // Normalized output (-1 to 1)
	self.handleDown = function (localX, localY) {
		// localX, localY are relative to the joystick's center (its origin)
		// Check if the touch is within the larger base area to start dragging
		var distSqFromCenter = localX * localX + localY * localY;
		if (distSqFromCenter <= self.baseSprite.width / 2 * (self.baseSprite.width / 2)) {
			self.isDragging = true;
			self.handleMove(localX, localY); // Snap knob to initial touch position
			return true; // Indicates joystick took control
		}
		return false; // Joystick not activated
	};
	self.handleMove = function (localX, localY) {
		if (!self.isDragging) return;
		var dist = Math.sqrt(localX * localX + localY * localY);
		if (dist > self.radius) {
			// Normalize and scale to radius if touch is outside draggable area
			self.knobSprite.x = localX / dist * self.radius;
			self.knobSprite.y = localY / dist * self.radius;
		} else {
			self.knobSprite.x = localX;
			self.knobSprite.y = localY;
		}
		// Calculate normalized input vector
		if (self.radius > 0) {
			self.inputVector.x = self.knobSprite.x / self.radius;
			self.inputVector.y = self.knobSprite.y / self.radius;
		} else {
			// Avoid division by zero if radius is zero
			self.inputVector.x = 0;
			self.inputVector.y = 0;
		}
	};
	self.handleUp = function () {
		if (self.isDragging) {
			self.isDragging = false;
			// Reset knob to center and clear input vector
			self.knobSprite.x = 0;
			self.knobSprite.y = 0;
			self.inputVector.x = 0;
			self.inputVector.y = 0;
		}
	};
	self.getInput = function () {
		return self.inputVector;
	};
	self.isActive = function () {
		return self.isDragging;
	};
	return self;
});
// Projectile class for player's bullets
var PlayerProjectile = Container.expand(function (fireAngle) {
	var self = Container.call(this);
	// Attach bullet sprite
	self.bulletSprite = self.attachAsset('playerBulletSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.angle = fireAngle; // Store the firing angle
	self.speed = 20; // Projectile speed magnitude
	// The playerBulletSprite has orientation:1, meaning it's rotated 90deg clockwise.
	// If original was thin vertical, it's now thin horizontal, "pointing" along its X-axis.
	// So, self.angle directly applies.
	self.bulletSprite.rotation = self.angle;
	self.isOffScreen = false; // Flag to indicate if projectile is off-screen
	// Update method to move projectile
	self.update = function () {
		if (self.isOffScreen) return; // Don't update if already marked off-screen
		self.x += Math.cos(self.angle) * self.speed;
		self.y += Math.sin(self.angle) * self.speed;
		// Check if off-screen
		var gameWidth = 2048;
		var gameHeight = 2732;
		// Margin based on projectile size to ensure it's fully off-screen
		var margin = Math.max(self.bulletSprite.width, self.bulletSprite.height) / 2 + 50;
		if (self.x < -margin || self.x > gameWidth + margin || self.y < -margin || self.y > gameHeight + margin) {
			self.isOffScreen = true;
		}
	}; //{M} // Note: Original L was self.destroy related, removed.
	return self;
});
// PlayerShip class to handle player ship logic and projectile spawn point calculation
var PlayerShip = Container.expand(function () {
	var self = Container.call(this);
	self.health = 3; // Player can take a few hits
	self.isDestroyed = false;
	self.hit = function () {
		if (self.isDestroyed) return;
		self.health--;
		LK.effects.flashObject(self.shipSprite || self, 0xff0000, 150); // Flash red on hit (flash sprite if available)
		// Update hearts display
		for (var i = 0; i < hearts.length; i++) {
			hearts[i].visible = i < self.health;
		}
		if (self.health <= 0) {
			self.isDestroyed = true;
			// Game over will be triggered in game.update
		}
	};
	// Attach player ship sprite and set reference for spawn point calculation
	self.shipSprite = self.attachAsset('playerShipSprite', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.moveSpeed = 10; // Pixels per tick for movement speed
	// currentAngle is the direction the ship moves and fires projectiles.
	// 0 radians = right, -PI/2 = up (screen coordinates).
	self.currentAngle = -Math.PI / 2; // Initial angle: pointing up.
	// playerShipSprite is assumed to be designed pointing "up" (its nose along its local -Y axis).
	// To make the sprite's nose align with currentAngle, its visual rotation needs adjustment.
	// Visual rotation = currentAngle + Math.PI / 2.
	// E.g., currentAngle = -PI/2 (up) => visual rotation = 0.
	// E.g., currentAngle = 0 (right) => visual rotation = PI/2.
	self.shipSprite.rotation = self.currentAngle + Math.PI / 2;
	// Initialize projectile spawn point (remains important)
	// This will be updated relative to the ship's current position in self.update()
	// Initial dummy values, will be set correctly on first update.
	projectileSpawnPoint.x = 0;
	projectileSpawnPoint.y = 0;
	self.applyJoystickInput = function (inputX, inputY) {
		// Update angle only if joystick provides directional input
		if (inputX !== 0 || inputY !== 0) {
			self.currentAngle = Math.atan2(inputY, inputX);
			self.shipSprite.rotation = self.currentAngle + Math.PI / 2;
		}
		self.x += inputX * self.moveSpeed;
		self.y += inputY * self.moveSpeed;
		// Boundary checks to keep ship on screen
		var halfWidth = self.shipSprite.width / 2;
		var halfHeight = self.shipSprite.height / 2;
		var gameWidth = 2048;
		var gameHeight = 2732;
		var topSafeMargin = 100; // Top 100px area is reserved
		if (self.x - halfWidth < 0) self.x = halfWidth;
		if (self.x + halfWidth > gameWidth) self.x = gameWidth - halfWidth;
		if (self.y - halfHeight < topSafeMargin) self.y = topSafeMargin + halfHeight;
		if (self.y + halfHeight > gameHeight) self.y = gameHeight - halfHeight;
	};
	// Update projectile spawn point every frame based on player ship position and rotation
	self.update = function () {
		var shipAsset = self.shipSprite;
		if (!shipAsset) return;
		// Calculate spawn point at the tip of the ship, considering its currentAngle.
		// The "nose" is shipAsset.height / 2 distance from the center.
		var noseDistance = shipAsset.height / 2;
		projectileSpawnPoint.x = self.x + Math.cos(self.currentAngle) * noseDistance;
		projectileSpawnPoint.y = self.y + Math.sin(self.currentAngle) * noseDistance;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Projectile spawn point (relative to player ship center)
// Will be updated in PlayerShip class update
var projectileSpawnPoint = {
	x: 0,
	y: 0
};
var joystick; // Declare joystick instance
// Array to keep track of all player projectiles
var playerProjectiles = [];
// Player ammo count (start with 10). Player cannot fire forever: must wait for ammo to restore and cannot hold fire for auto-fire.
var playerAmmo = 10;
// Fire button cooldown in ticks (default 30, can be halved by Card1)
var fireButtonCooldown = 30;
// Array to keep track of all enemy ships
var enemyShips = [];
// Array to keep track of all enemy projectiles
var enemyProjectiles = [];
// Global flag: freeze all enemy movement and firing during card choice
var freezeEnemies = false;
// Create player ship and add to game
var playerShip = new PlayerShip();
game.addChild(playerShip);
// Display hearts for player health
var hearts = [];
for (var i = 0; i < playerShip.health; i++) {
	var heart = new Heart();
	heart.x = i * 120 + 120; // Position hearts with increased spacing
	heart.y = 60; // Top-left corner
	LK.gui.topLeft.addChild(heart);
	hearts.push(heart);
}
// Money counter (pixel style) in top-right corner
var money = 0;
var moneyTxt = new Text2(money + " $", {
	size: 120,
	fill: 0xFFE066,
	font: "monospace, 'Press Start 2P', 'VT323', 'Courier New', Courier, monospace",
	// pixel/retro style
	align: "right"
});
moneyTxt.anchor.set(1, 0); // Right-top anchor
moneyTxt.x = -60; // Padding from right edge
moneyTxt.y = 60; // Padding from top edge
LK.gui.topRight.addChild(moneyTxt);
// Ammo counter removed as per requirements
// Center player ship horizontally, place near bottom
playerShip.x = 2048 / 2;
playerShip.y = 2732 - 350;
// Create Joystick
joystick = new Joystick();
game.addChild(joystick);
// Set initial position (e.g., 0,0), though it will jump to touch.
joystick.x = 0;
joystick.y = 0;
// Enemy spawn multiplier (default 1, can be set to 3 for 5 seconds after Card2)
game._enemySpawnMultiplier = 1;
game._enemySpawnMultiplierTimeout = null;
// Create and add Enemy Ships
var enemyShip1 = new EnemyShip();
var enemyShipAssetHeight1 = enemyShip1.shipSprite && enemyShip1.shipSprite.height ? enemyShip1.shipSprite.height : 146; // Default to asset height
enemyShip1.x = 2048 / 3;
enemyShip1.y = -(enemyShipAssetHeight1 / 2) - 50; // Start off-screen at the top
enemyShip1.lastX = enemyShip1.x; // Initialize lastX to the actual starting x
enemyShip1.lastY = enemyShip1.y; // Initialize lastY to the actual starting y
game.addChild(enemyShip1);
enemyShips.push(enemyShip1);
var enemyShip2 = new EnemyShip();
var enemyShipAssetHeight2 = enemyShip2.shipSprite && enemyShip2.shipSprite.height ? enemyShip2.shipSprite.height : 146; // Default to asset height
enemyShip2.x = 2048 * 2 / 3;
enemyShip2.y = -(enemyShipAssetHeight2 / 2) - 150; // Start off-screen, staggered further up
enemyShip2.lastX = enemyShip2.x; // Initialize lastX to the actual starting x
enemyShip2.lastY = enemyShip2.y; // Initialize lastY to the actual starting y
game.addChild(enemyShip2);
enemyShips.push(enemyShip2);
// Game event handlers
// Create and position Fire Button
var fireButton = new FireButton();
LK.gui.bottomLeft.addChild(fireButton);
// Position the fire button visually in the bottom-left corner with some margin
// The buttonSprite is 200x200 and anchored at its center (0.5, 0.5)
// fireButton (Container) is added to LK.gui.bottomLeft, positioning its top-left (0,0) at screen bottom-left.
// Adjust x and y to make the button appear correctly.
var buttonMargin = 50; // 50px margin from screen edges
fireButton.x = fireButton.buttonSprite.width / 2 + buttonMargin;
fireButton.y = -fireButton.buttonSprite.height / 2 - buttonMargin; // Negative Y moves up from the bottom edge
game.down = function (x, y, obj) {
	if (game._cardChoiceActive) {
		// Block joystick and ship movement while card choice is active
		return;
	}
	// x, y are global game coordinates
	// Move the joystick to the touch position
	joystick.x = x;
	joystick.y = y;
	joystick.visible = true;
	// Activate the joystick. Since the joystick's origin is now at the touch point (x,y),
	// the local coordinates for the touch within the joystick are (0,0).
	// This centers the knob under the finger and initiates dragging.
	joystick.handleDown(0, 0); // Pass (0,0) as local coordinates
	// Note: With this "floating joystick" implementation, the joystick activates on any screen press.
	// The previous mechanic, where tapping away from a fixed joystick fired projectiles,
	// is superseded. Further design would be needed for a separate firing mechanism.
};
game.move = function (x, y, obj) {
	if (game._cardChoiceActive) {
		// Block joystick movement while card choice is active
		return;
	}
	if (joystick.isActive()) {
		var joystickLocalPos = joystick.toLocal({
			x: x,
			y: y
		});
		joystick.handleMove(joystickLocalPos.x, joystickLocalPos.y);
	}
};
game.up = function (x, y, obj) {
	if (game._cardChoiceActive) {
		// Block joystick release while card choice is active
		return;
	}
	if (joystick.isActive()) {
		joystick.handleUp(); // Resets knob, inputVector, and isDragging flag
		joystick.visible = false; // Hide the joystick when the touch is released
	}
};
// Update game state
var ammoRestoreCooldown = 0; // Ticks until next ammo restore
game.update = function () {
	// Prevent all game logic and object updates while card choice overlay is active
	if (game._cardChoiceActive) {
		// Only allow card overlay input, skip all updates and movement
		return;
	}
	// Restore ammo if not full, with a delay (e.g., 30 ticks = 0.5s)
	if (typeof playerAmmo !== 'undefined') {
		if (playerAmmo < 10) {
			if (typeof ammoRestoreCooldown === 'undefined') ammoRestoreCooldown = 0;
			if (ammoRestoreCooldown > 0) {
				ammoRestoreCooldown--;
			} else {
				playerAmmo += 1;
				// Removed ammo counter update as per requirements
				ammoRestoreCooldown = 30; // 0.5s at 60FPS
			}
		} else {
			ammoRestoreCooldown = 0;
		}
	}
	// Apply joystick input to player ship movement
	if (joystick && playerShip && playerShip.applyJoystickInput) {
		var input = joystick.getInput();
		playerShip.applyJoystickInput(input.x, input.y);
	}
	// Update player ship (e.g., to recalculate projectileSpawnPoint after moving)
	if (playerShip && playerShip.update) {
		playerShip.update();
	}
	// Update and clean up projectiles, and check for collisions with enemies
	for (var i = playerProjectiles.length - 1; i >= 0; i--) {
		var proj = playerProjectiles[i];
		if (proj.update) {
			proj.update(); // Call projectile's own update logic (movement)
		}
		// Check if the projectile flagged itself as off-screen AFTER moving
		if (proj.isOffScreen) {
			proj.destroy(); // Destroy the projectile
			playerProjectiles.splice(i, 1); // Remove from the tracking array
			continue; // Move to the next projectile
		}
		// Collision detection with enemy ships
		for (var k = enemyShips.length - 1; k >= 0; k--) {
			var enemy = enemyShips[k];
			// Skip already destroyed or off-screen enemies for collision checks
			if (enemy.isDestroyed || enemy.isOffScreen) {
				continue;
			}
			if (proj.intersects(enemy)) {
				enemy.hit(); // Enemy takes damage, potentially sets isDestroyed = true
				proj.destroy(); // Projectile is consumed on hit
				playerProjectiles.splice(i, 1); // Remove projectile
				// If enemy.isDestroyed became true, it will be handled in the enemyShips loop below.
				// Score will be awarded there too.
				break; // Projectile is gone, no need to check against other enemies
			}
		}
		// If proj was spliced, loop continues correctly to the new element at index i or finishes.
	}
	// Update and clean up enemy projectiles, and check for collisions with player
	for (var l = enemyProjectiles.length - 1; l >= 0; l--) {
		var eProj = enemyProjectiles[l];
		if (eProj.update) {
			eProj.update(); // Call projectile's own update logic (movement)
		}
		// Check if the projectile flagged itself as off-screen AFTER moving
		if (eProj.isOffScreen) {
			if (typeof eProj.destroy === 'function') eProj.destroy();
			enemyProjectiles.splice(l, 1); // Remove from the tracking array
			continue; // Move to the next projectile
		}
		// Collision detection with player ship
		// Ensure playerShip exists and is not already destroyed before checking intersection
		if (playerShip && !playerShip.isDestroyed && typeof eProj.intersects === 'function' && eProj.intersects(playerShip)) {
			if (typeof playerShip.hit === 'function') playerShip.hit(); // Player takes damage
			if (typeof eProj.destroy === 'function') eProj.destroy(); // Projectile is consumed on hit
			enemyProjectiles.splice(l, 1); // Remove projectile
			if (playerShip.isDestroyed) {
				// Player ship is destroyed, handle game over
				if (playerShip.shipSprite) playerShip.shipSprite.visible = false; // Hide player ship sprite
				else if (typeof playerShip.visible !== 'undefined') playerShip.visible = false;
				LK.showGameOver(); // Trigger game over sequence
				// Since LK.showGameOver() pauses/resets, we might not need to explicitly break loops,
				// but it's good practice if other logic depended on player not being destroyed.
				// For this loop, the projectile is gone, so `continue` or `break` isn't strictly needed for `eProj`.
			}
			// If projectile hit player, it's gone. No need to check further for this projectile.
			// The loop will continue with the next enemy projectile.
		}
	}
	// Update and clean up enemy ships
	// This loop should still run even if player is destroyed, to clean up existing enemies,
	// though new game state might prevent further updates if LK.showGameOver() is effective immediately.
	var _loop = function _loop() {
			enemy = enemyShips[j]; // First, check if the enemy ship is marked as destroyed (e.g., by a projectile hit)
			if (enemy.isDestroyed) {
				// Show Boom image at enemy's position
				boomImg = LK.getAsset('Boom', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: enemy.x,
					y: enemy.y
				});
				game.addChild(boomImg);
				// Remove Boom image after a short delay (e.g., 125ms), then show Boom2 at the same position
				LK.setTimeout(function () {
					if (boomImg && typeof boomImg.destroy === 'function') boomImg.destroy();
					// Show Boom2 image at the same position after Boom disappears
					var boom2Img = LK.getAsset('Boom2', {
						anchorX: 0.5,
						anchorY: 0.5,
						x: enemy.x,
						y: enemy.y
					});
					game.addChild(boom2Img);
					// Remove Boom2 image after a short delay (e.g., 125ms), then show Boom3 at the same position
					LK.setTimeout(function () {
						if (boom2Img && typeof boom2Img.destroy === 'function') boom2Img.destroy();
						// Show Boom3 image at the same position after Boom2 disappears
						var boom3Img = LK.getAsset('Boom3', {
							anchorX: 0.5,
							anchorY: 0.5,
							x: enemy.x,
							y: enemy.y
						});
						game.addChild(boom3Img);
						// Remove Boom3 image after a short delay (e.g., 125ms), then show Boom4 at the same position
						LK.setTimeout(function () {
							if (boom3Img && typeof boom3Img.destroy === 'function') boom3Img.destroy();
							// Show Boom4 image at the same position after Boom3 disappears
							var boom4Img = LK.getAsset('Boom4', {
								anchorX: 0.5,
								anchorY: 0.5,
								x: enemy.x,
								y: enemy.y
							});
							game.addChild(boom4Img);
							// Remove Boom4 image after a short delay (e.g., 125ms), then show Boom5 at the same position
							LK.setTimeout(function () {
								if (boom4Img && typeof boom4Img.destroy === 'function') boom4Img.destroy();
								// Show Boom5 image at the same position after Boom4 disappears
								var boom5Img = LK.getAsset('Boom5', {
									anchorX: 0.5,
									anchorY: 0.5,
									x: enemy.x,
									y: enemy.y
								});
								game.addChild(boom5Img);
								// Remove Boom5 image after a short delay (e.g., 125ms), then show Boom6 at the same position
								LK.setTimeout(function () {
									if (boom5Img && typeof boom5Img.destroy === 'function') boom5Img.destroy();
									// Show Boom6 image at the same position after Boom5 disappears
									var boom6Img = LK.getAsset('Boom6', {
										anchorX: 0.5,
										anchorY: 0.5,
										x: enemy.x,
										y: enemy.y
									});
									game.addChild(boom6Img);
									// Remove Boom6 image after a short delay (e.g., 125ms)
									LK.setTimeout(function () {
										if (boom6Img && typeof boom6Img.destroy === 'function') boom6Img.destroy();
									}, 125);
								}, 125);
							}, 125);
						}, 125);
					}, 125);
				}, 125);
				enemy.destroy(); // Destroy the enemy ship
				enemyShips.splice(j, 1); // Remove from the tracking array
				LK.setScore(LK.getScore() + 10); // Award score for destroying an enemy
				money += 5; // Add 5 money per enemy destroyed
				if (typeof moneyTxt !== 'undefined' && moneyTxt.setText) {
					moneyTxt.setText(money + " $");
				}
				LK.getSound('Boom').play(); // Play 'Boom' sound effect
				// 25% chance to drop a health restoration
				if (Math.random() < 0.25) {
					healthRestore = new HealthRestore();
					healthRestore.x = enemy.x;
					healthRestore.y = enemy.y;
					game.addChild(healthRestore);
				}
				// --- Card choice after 3 kills ---
				if (typeof enemiesKilled === 'undefined') {
					enemiesKilled = 0;
				}
				enemiesKilled++;
				// enemiesKilled is now also used to increase spawn count
				if (enemiesKilled > 0 && enemiesKilled % 3 === 0 && !game._cardChoiceActive) {
					// Helper to finish card choice and resume game
					var finishCardChoice = function finishCardChoice() {
						if (!game._cardChoiceActive) return;
						game._cardChoiceActive = false;
						freezeEnemies = false;
						if (cardOverlay && typeof cardOverlay.destroy === 'function') cardOverlay.destroy();
						// Restore input
						game.down = oldGameDown;
						game.move = oldGameMove;
						game.up = oldGameUp;
						// Resume game logic
						// No need to call LK.resumeGame(); LK engine will resume game after overlay is destroyed
					};
					game._cardChoiceActive = true;
					// Freeze all enemy movement and firing
					freezeEnemies = true;
					// --- Block card selection for 2 seconds ---
					game._cardChoiceBlock = true;
					LK.setTimeout(function () {
						game._cardChoiceBlock = false;
					}, 2000);
					// Pause game logic is handled by LK.showGameOver() and LK.resumeGame(), no need to call LK.pause() here
					// Create overlay for card choice
					cardOverlay = new Container();
					cardOverlay.name = "cardChoiceOverlay";
					// Semi-transparent background
					bg = LK.getAsset('centerCircle', {
						anchorX: 0.5,
						anchorY: 0.5,
						scaleX: 20,
						scaleY: 20,
						x: 2048 / 2,
						y: 2732 / 2,
						tint: 0x000000,
						alpha: 0.7
					});
					cardOverlay.addChild(bg);
					// Card 1
					card1 = new Container();
					card1Img = LK.getAsset('Card1', {
						anchorX: 0.5,
						anchorY: 0.5,
						x: 2048 / 2 - 300,
						y: 2732 / 2
					});
					card1.addChild(card1Img);
					card1.x = 0;
					card1.y = 0;
					card1.interactive = true;
					card1.down = function (x, y, obj) {
						if (!game._cardChoiceActive || game._cardChoiceBlock) return;
						// Example effect: restore 2 ammo
						playerAmmo = Math.min(playerAmmo + 2, 10);
						// Halve fire button cooldown for faster shooting
						fireButtonCooldown = Math.max(1, Math.floor(fireButtonCooldown / 2));
						finishCardChoice();
					};
					cardOverlay.addChild(card1);
					// Card 2
					card2 = new Container();
					card2Img = LK.getAsset('Csrd2', {
						anchorX: 0.5,
						anchorY: 0.5,
						x: 2048 / 2 + 300,
						y: 2732 / 2
					});
					card2.addChild(card2Img);
					card2.x = 0;
					card2.y = 0;
					card2.interactive = true;
					card2.down = function (x, y, obj) {
						if (!game._cardChoiceActive || game._cardChoiceBlock) return;
						// Double player speed for 5 seconds
						if (playerShip) {
							if (typeof playerShip._originalMoveSpeed === 'undefined') {
								playerShip._originalMoveSpeed = playerShip.moveSpeed;
							}
							playerShip.moveSpeed = playerShip._originalMoveSpeed * 2;
							LK.setTimeout(function () {
								if (playerShip && typeof playerShip._originalMoveSpeed !== 'undefined') {
									playerShip.moveSpeed = playerShip._originalMoveSpeed;
								}
							}, 5000);
						}
						// Triple enemy spawn for 5 seconds
						if (typeof game._enemySpawnMultiplierTimeout !== 'undefined' && game._enemySpawnMultiplierTimeout) {
							LK.clearTimeout(game._enemySpawnMultiplierTimeout);
						}
						game._enemySpawnMultiplier = 3;
						game._enemySpawnMultiplierTimeout = LK.setTimeout(function () {
							game._enemySpawnMultiplier = 1;
							game._enemySpawnMultiplierTimeout = null;
						}, 5000);
						// Example effect: restore 1 health
						if (playerShip && playerShip.health < 3) {
							playerShip.health = Math.min(playerShip.health + 1, 3);
							for (var i = 0; i < hearts.length; i++) {
								hearts[i].visible = i < playerShip.health;
							}
						}
						finishCardChoice();
					};
					cardOverlay.addChild(card2);
					// Add overlay to game
					game.addChild(cardOverlay);
					// Block all input except card choice
					oldGameDown = game.down;
					oldGameMove = game.move;
					oldGameUp = game.up;
					game.down = function (x, y, obj) {
						if (game._cardChoiceBlock) return;
						// Forward to cards only
						var local = card1.toLocal({
							x: x,
							y: y
						});
						if (card1Img && Math.abs(local.x) < card1Img.width / 2 && Math.abs(local.y) < card1Img.height / 2) {
							card1.down(x, y, obj);
							return;
						}
						local = card2.toLocal({
							x: x,
							y: y
						});
						if (card2Img && Math.abs(local.x) < card2Img.width / 2 && Math.abs(local.y) < card2Img.height / 2) {
							card2.down(x, y, obj);
							return;
						}
					};
					game.move = function () {};
					game.up = function () {};
				}
				// }
				// if (typeof scoreTxt !== 'undefined' && scoreTxt && scoreTxt.setText) {
				//     scoreTxt.setText(LK.getScore());
				// }
				return 1; // continue
				// Move to the next enemy ship in the list
			}
			if (enemy.update) {
				enemy.update(); // Call enemy ship's own update logic (movement, etc.)
			}
			// Then, check if the enemy ship flagged itself as off-screen (if not already destroyed)
			if (enemy.isOffScreen) {
				enemy.destroy(); // Destroy the enemy ship
				enemyShips.splice(j, 1); // Remove from the tracking array
				// No score for merely going off-screen, unless desired.
			}
		},
		enemy,
		boomImg,
		healthRestore,
		cardOverlay,
		bg,
		card1,
		card1Bg,
		card1Text,
		card2,
		card2Bg,
		card2Text,
		oldGameDown,
		oldGameMove,
		oldGameUp;
	for (var j = enemyShips.length - 1; j >= 0; j--) {
		if (_loop()) continue;
	}
	// Increase the number of enemies over time
	if (typeof baseEnemySpawnCount === 'undefined') {
		baseEnemySpawnCount = 3; // Start with 3x more enemies
	}
	if (typeof enemiesKilled === 'undefined') {
		enemiesKilled = 0;
	}
	if (LK.ticks % Math.max(30, 150 - Math.floor(LK.ticks / 300)) === 0) {
		// Always triple the base spawn, and add +1 for each enemy killed
		var baseMultiplier = baseEnemySpawnCount + enemiesKilled;
		var multiplier = typeof game._enemySpawnMultiplier !== 'undefined' && game._enemySpawnMultiplier > 1 ? game._enemySpawnMultiplier * baseMultiplier : baseMultiplier;
		for (var spawnIdx = 0; spawnIdx < multiplier; spawnIdx++) {
			var newEnemyShip = new EnemyShip();
			var enemyShipAssetHeight = newEnemyShip.shipSprite && newEnemyShip.shipSprite.height ? newEnemyShip.shipSprite.height : 146; // Default to asset height
			newEnemyShip.x = Math.random() * 2048; // Random horizontal position
			newEnemyShip.y = -(enemyShipAssetHeight / 2) - 50; // Start off-screen at the top
			newEnemyShip.lastX = newEnemyShip.x; // Initialize lastX to the actual starting x
			newEnemyShip.lastY = newEnemyShip.y; // Initialize lastY to the actual starting y
			game.addChild(newEnemyShip);
			enemyShips.push(newEnemyShip);
		}
	}
};
LK.playMusic('Space');

===================================================================
--- original.js
+++ change.js
@@ -707,8 +707,9 @@
 				if (typeof enemiesKilled === 'undefined') {
 					enemiesKilled = 0;
 				}
 				enemiesKilled++;
+				// enemiesKilled is now also used to increase spawn count
 				if (enemiesKilled > 0 && enemiesKilled % 3 === 0 && !game._cardChoiceActive) {
 					// Helper to finish card choice and resume game
 					var finishCardChoice = function finishCardChoice() {
 						if (!game._cardChoiceActive) return;
@@ -875,11 +876,17 @@
 	for (var j = enemyShips.length - 1; j >= 0; j--) {
 		if (_loop()) continue;
 	}
 	// Increase the number of enemies over time
+	if (typeof baseEnemySpawnCount === 'undefined') {
+		baseEnemySpawnCount = 3; // Start with 3x more enemies
+	}
+	if (typeof enemiesKilled === 'undefined') {
+		enemiesKilled = 0;
+	}
 	if (LK.ticks % Math.max(30, 150 - Math.floor(LK.ticks / 300)) === 0) {
-		// Reduce base spawn multiplier from 3 to 1 (or 1x/3x if card2 effect active)
-		var baseMultiplier = 1;
+		// Always triple the base spawn, and add +1 for each enemy killed
+		var baseMultiplier = baseEnemySpawnCount + enemiesKilled;
 		var multiplier = typeof game._enemySpawnMultiplier !== 'undefined' && game._enemySpawnMultiplier > 1 ? game._enemySpawnMultiplier * baseMultiplier : baseMultiplier;
 		for (var spawnIdx = 0; spawnIdx < multiplier; spawnIdx++) {
 			var newEnemyShip = new EnemyShip();
 			var enemyShipAssetHeight = newEnemyShip.shipSprite && newEnemyShip.shipSprite.height ? newEnemyShip.shipSprite.height : 146; // Default to asset height