/**** 
* Classes
****/ 
// Dog class for the dog that appears when a duck crosses the bottom border
var Dog = Container.expand(function () {
	var self = Container.call(this);
	var dogGraphics = self.attachAsset('dog', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
// Enemy class for targets
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	self.id = Math.floor(Math.random() * 10000); // Assign a random id to each enemy
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4 + Math.floor(LK.getScore() / 8);
	self.hit = false;
	self._move_migrated = function () {
		if (self.hit) {
			// Pre-calculate angle to optimize runtime calculations
			var hitMovementSpeed = 15;
			var hitAngleRadians = Math.PI * 70 / 180; // Pre-convert angle to radians
			self.x += hitMovementSpeed * Math.cos(hitAngleRadians);
			self.y += hitMovementSpeed * Math.sin(hitAngleRadians);
			// Optimize scaling and rotation to reduce calculations
			var scaleDecrement = 15 / 60;
			self.scale.x -= scaleDecrement / enemyGraphics.width;
			self.scale.y -= scaleDecrement / enemyGraphics.height;
			self.rotation += Math.PI / 180 * 45 / 60; // Simplify rotation calculation
		} else {
			self.x += self.speed;
			if (self.x > 2048 && !self.shotSoundPlayed) {
				self.shotSoundPlayed = true;
				LK.setTimeout(function () {
					LK.getSound('Shot').play();
				}, 820); // 0.5 seconds delay
				LK.setTimeout(function () {
					LK.getSound('Tadam').play();
				}, 300); // 0.2 seconds delay
			}
			if (self.id % 3 == 0) {
				self.y += 1.8 * Math.sin(LK.ticks / 60); // Move up and down smoothly by 30
			}
		}
	};
});
// Assets are automatically created based on usage in the code.
// Bullet class for bullets fired by the player
var PlayerBullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('playerBullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -22;
	self._move_migrated = function () {
		// Optimized bullet movement and scaling to reduce calculations per frame
		var deltaX = self.speed * Math.cos(this.direction);
		var deltaY = self.speed * Math.sin(this.direction);
		self.x += deltaX;
		self.y += deltaY;
		// Simplified scaling to reduce per frame calculations
		var scaleDecrement = 10 / 60;
		self.scale.x -= scaleDecrement / bulletGraphics.width;
		self.scale.y -= scaleDecrement / bulletGraphics.height;
	};
	self.distanceTo = function (other) {
		var dx = other.x - this.x;
		var dy = other.y - this.y;
		return Math.sqrt(dx * dx + dy * dy);
	};
});
// XVOST class for the XVOST object that moves in a random direction at the bottom of the screen
var XVOST = Container.expand(function () {
	var self = Container.call(this);
	var xvostGraphics = self.attachAsset('xvost', {
		anchorX: 0.5,
		anchorY: 1.0
	});
	self.speed = 2.5;
	self.direction = Math.PI; // Set direction to left
	self.update = function () {
		self.x += self.speed * Math.cos(self.direction);
		self.y = self.y;
		// Add code to smoothly tilt XVOST to the left and right every second
		if (LK.ticks % 60 < 30) {
			if (self.rotation > -10 * (Math.PI / 180)) {
				self.rotation -= 10 * (Math.PI / 180) / (0.5 * 60); // 0.5 seconds at 60FPS
			}
		} else {
			if (self.rotation < 10 * (Math.PI / 180)) {
				self.rotation += 10 * (Math.PI / 180) / (0.5 * 60); // 0.5 seconds at 60FPS
			}
		}
		// Mirror the XVOST object when it intersects with the game borders
		if (self.x < 100) {
			self.x = 100;
			self.direction = Math.PI - self.direction; // Change direction
			xvostGraphics.scale.x *= -1; // Mirror the XVOST object
		} else if (self.x > 1900) {
			self.x = 1900;
			self.direction = Math.PI - self.direction; // Change direction
			xvostGraphics.scale.x *= -1; // Mirror the XVOST object
		}
		if (self.y < 2000) {
			self.y = 2000;
			self.direction = -self.direction; // Change direction
			xvostGraphics.scale.y *= -1; // Mirror the XVOST object
		} else if (self.y > 2250) {
			self.y = 2250;
			self.direction = -self.direction; // Change direction
			xvostGraphics.scale.y *= -1; // Mirror the XVOST object
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0xE6E6E6 // Init game with a slightly lighter gray background
});

/**** 
* Game Code
****/ 
// Add 'idea' image to the center of the screen
var idea = game.addChild(new Container());
var ideaGraphics = idea.attachAsset('idea', {
	anchorX: 0.5,
	anchorY: 0.5,
	alpha: 0.001 // Set opacity to 50%
});
idea.x = 1024; // Center horizontally
idea.y = 1366; // Center vertically
// Add 'vzriv' image to the left center of the screen with 50% opacity
var vzriv = game.addChild(new Container());
var vzrivGraphics = vzriv.attachAsset('vzriv', {
	anchorX: 0.5,
	anchorY: 0.5,
	alpha: 0.001 // Set opacity to 50%
});
vzriv.x = 1024 / 2; // Center horizontally on the left side
vzriv.y = 1230; // Center vertically
var score = LK.getScore(); // Retrieve the current score
var scoreTxt = new Text2('0', {
	size: 70,
	fill: "#000000",
	fontWeight: "bold" // Make the text bolder
});
scoreTxt.anchor.set(1, 0); // Anchor to the top right
LK.gui.topRight.addChild(scoreTxt);
// Create a background
var background = game.addChild(new Container());
var backgroundGraphics = background.attachAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5
});
background.x = 1024; // Center horizontally
background.y = 1366; // Center vertically
var playerBullets = [];
var enemies = [];
// Dynamically adjust enemy spawn interval based on score to optimize game difficulty
var baseSpawnInterval = 240;
var spawnEnemyInterval = baseSpawnInterval - Math.floor(LK.getScore() / 10) * 5;
spawnEnemyInterval = Math.max(spawnEnemyInterval, 100); // Ensure minimum spawn interval
var enemySpawnTimer = 0;
// Function to spawn enemies
function spawnEnemy() {
	var enemySize = 200 - Math.floor(LK.getScore() / 5) * 10;
	enemySize = Math.max(enemySize, 100); // Ensure enemy size does not go below 100
	var enemy = new Enemy();
	enemy.scale.x = enemySize / 200;
	enemy.scale.y = enemySize / 200;
	enemy.x = -130; // Start at the left
	enemy.y = Math.random() * (1366 - 170) + 170; // Random position from 100 to 1366
	enemies.push(enemy);
	game.addChild(enemy);
}
// Function to fire a bullet
function fireBullet() {
	var bullet = new PlayerBullet();
	bullet.x = 1024; // Center horizontally
	bullet.y = 2500; // Bottom of the screen
	playerBullets.push(bullet);
	game.addChild(bullet);
	// Play shot sound
	LK.getSound('Shot').play();
	return bullet;
}
// Touch event to fire bullets
var lastBulletTime = 0;
game.on('down', function (x, y, obj) {
	if (LK.ticks - lastBulletTime >= 65 || playerBullets.length === 0) {
		// 30 ticks = 0.5 second at 60FPS
		var bullet = fireBullet();
		var touchPos = game.toLocal(obj.global);
		var angle = Math.atan2(2632 - touchPos.y, 1024 - touchPos.x);
		bullet.direction = angle; // Set direction to shoot towards the touch point
		lastBulletTime = LK.ticks;
	}
});
// Add weapon image to the bottom center of the screen
var weapon = game.addChild(new Container());
var weaponGraphics = weapon.attachAsset('weapon', {
	anchorX: 0.5,
	anchorY: 0.5,
	rotation: -50 * (Math.PI / 180) // Rotate 30 degrees counter-clockwise
});
weapon.x = 1024; // Center horizontally
weapon.y = 2880; // Bottom of the screen
// Add 'Napr' image to the center of the screen and handle tap logic
var naprTapCount = 0;
var naprLastTapTime = 0;
var napr = game.addChild(new Container());
var naprGraphics = napr.attachAsset('Napr', {
	anchorX: 0.5,
	anchorY: 0.5
});
napr.x = 1700; // Center horizontally
napr.y = 2150; // Center vertically
napr.rotation = 7 * (Math.PI / 180); // Rotate the image by 10 degrees
napr.down = function (x, y, obj) {
	var currentTime = LK.ticks;
	if (currentTime - naprLastTapTime <= 120) {
		// 2 seconds at 60FPS
		naprTapCount++;
		if (naprTapCount >= 5) {
			// Show central image for 3 seconds
			var centralImage = game.addChild(new Container());
			var centralImageGraphics = centralImage.attachAsset('picture', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			centralImage.x = 1024; // Center horizontally
			centralImage.y = 200; // Center vertically
			LK.setTimeout(function () {
				centralImage.visible = false;
				centralImage.destroy();
			}, 3000);
			naprTapCount = 0; // Reset tap count
		}
	} else {
		naprTapCount = 1; // Reset tap count if more than 2 seconds pass
	}
	naprLastTapTime = currentTime;
};
// Add 'Tap' image to the center of the screen
var tap = game.addChild(new Container());
var tapGraphics = tap.attachAsset('Tap', {
	anchorX: 0.5,
	anchorY: 0.5
});
tap.x = 1024; // Center horizontally
tap.y = 1366; // Center vertically
// Function to scale the 'tap' image down by 50 pixels and then scale it back up over 2 seconds
function scaleTap() {
	var originalScaleX = tap.scale.x;
	var originalScaleY = tap.scale.y;
	var targetScaleX = (tapGraphics.width - 40) / tapGraphics.width;
	var targetScaleY = (tapGraphics.height - 40) / tapGraphics.height;
	var scaleCount = 0;
	// Scale down
	var scaleDownInterval = LK.setInterval(function () {
		if (tap.scale.x > targetScaleX && tap.scale.y > targetScaleY) {
			tap.scale.x -= 0.01 / 0.8; // Adjust for 2 seconds
			tap.scale.y -= 0.01 / 0.8; // Adjust for 2 seconds
		} else {
			LK.clearInterval(scaleDownInterval);
			// Scale up
			var scaleUpInterval = LK.setInterval(function () {
				if (tap.scale.x < originalScaleX && tap.scale.y < originalScaleY) {
					tap.scale.x += 0.01 / 0.8; // Adjust for 2 seconds
					tap.scale.y += 0.01 / 0.8; // Adjust for 2 seconds
				} else {
					LK.clearInterval(scaleUpInterval);
					scaleCount++;
					if (scaleCount < 2) {
						scaleTap();
					} else {
						tap.visible = false;
						tap.destroy();
					}
				}
			}, 16.67); // 60FPS
		}
	}, 16.67); // 60FPS
}
// Call the function to start the scaling
scaleTap();
// Remove the 'tap' image after 3 seconds of gameplay
LK.setTimeout(function () {
	tap.visible = false;
	tap.destroy();
}, 1650);
// Add an XVOST object to the game
var xvost = game.addChild(new XVOST());
xvost.x = Math.random() * (1800 - 200) + 200; // Randomize x position between 200 and 1800
xvost.y = 2732 - xvost.height / 2; // Position at the bottom of the screen
// Ensure 'Xvost' sound plays at the start of the game
LK.setTimeout(function () {
	LK.getSound('Xvost').play();
	xvost.soundPlaying = true;
}, 0);
// Main game loop
LK.on('tick', function () {
	// Move bullets
	for (var i = playerBullets.length - 1; i >= 0; i--) {
		playerBullets[i]._move_migrated();
		if (playerBullets[i].y < 0) {
			// Remove bullets that go off screen
			playerBullets[i].destroy();
			playerBullets.splice(i, 1);
		}
	}
	// Move enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j]._move_migrated();
		if (enemies[j].x > 2135 && !enemies[j].hit) {
			// Trigger game over 3 seconds after an enemy crosses the border
			ideaGraphics.alpha = 1; // Set opacity to 100%
			LK.setTimeout(function () {
				vzrivGraphics.alpha = 1; // Remove opacity from 'vzriv'
				LK.setTimeout(function () {
					vzriv.visible = false; // Remove vzriv image
					LK.setTimeout(function () {
						LK.effects.flashScreen(0xff0000, 1000); // Flash screen red for 1 second
						LK.effects.flashScreen(0xff0000, 1000); // Flash screen red for 1 second
						LK.showGameOver(); // Show game over screen
					}, 200); // Trigger game over 3 seconds after opacity removal
				}, 100); // Remove vzriv image 0.5 seconds after opacity removal
			}, 600); // Delay for removing opacity from 'vzriv'
		} else if (enemies[j].y > 2300) {
			// Remove enemies that go off screen or become too small
			if (enemies[j].y > 2300 || enemies[j].scale.x <= 0 || enemies[j].scale.y <= 0) {
				// If the enemy crosses the bottom border, add a dog at its position
				if (enemies[j].y > 2300) {
					var enemyX = enemies[j].x;
					var enemyY = enemies[j].y;
					LK.setTimeout(function () {
						var dog = new Dog();
						dog.x = enemyX;
						dog.y = enemyY;
						game.addChild(dog);
						// Play dog sound
						LK.getSound('Dog').play();
						// Remove the dog after 2 seconds
						LK.setTimeout(function () {
							dog.visible = false;
							dog.destroy();
						}, 1000);
					}, 800);
				}
				enemies[j].destroy();
				enemies.splice(j, 1);
			}
		}
	}
	// Check for collisions
	for (var b = playerBullets.length - 1; b >= 0; b--) {
		var bullet = playerBullets[b];
		if (bullet) {
			for (var e = enemies.length - 1; e >= 0; e--) {
				var enemy = enemies[e];
				if (enemy && !enemy.hit && bullet.intersects(enemy) && bullet.distanceTo(enemy) <= 100) {
					// Mark enemy as hit, destroy the bullet on collision, and handle XVOST visibility
					bullet.destroy();
					playerBullets.splice(b, 1);
					enemy.hit = true;
					LK.setScore(LK.getScore() + 1); // Increment score by 1
					scoreTxt.setText(LK.getScore().toString()); // Update score display
					LK.getSound('Death').play(); // Play death sound
					LK.setTimeout(function () {
						xvost.visible = false; // Hide XVOST 1 second after collision
					}, 1200);
					if (!xvost.visible) {
						LK.clearTimeout(xvostVisibilityTimer); // Clear existing timer if XVOST is currently invisible
					}
					xvostVisibilityTimer = LK.setTimeout(function () {
						xvost.visible = true; // Reappear XVOST after 5 seconds
					}, 4000);
					break; // Exit loop after collision to avoid errors
				}
			}
		}
	}
	// Update the position of the XVOST object
	xvost.update();
	// Play or stop 'Xvost' sound based on visibility
	if (xvost.visible && !xvost.soundPlaying) {
		LK.getSound('Xvost').play();
		xvost.soundPlaying = true;
	} else if (!xvost.visible && xvost.soundPlaying) {
		LK.getSound('Xvost').stop();
		xvost.soundPlaying = false;
	}
	// Spawn enemies
	if (enemySpawnTimer <= 0) {
		spawnEnemy();
		enemySpawnTimer = spawnEnemyInterval;
	} else {
		enemySpawnTimer--;
	}
});