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

/**** 
* Classes
****/ 
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x -= self.speed;
		if (self.x < -50) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	self.runFrames = [self.attachAsset('playerRunFrame1', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 1
	}), self.attachAsset('playerRunFrame2', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	}), self.attachAsset('playerRunFrame', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	})];
	self.currentRunFrame = 0;
	self.speed = 5;
	self.jumpHeight = 30;
	self.isJumping = false;
	self.velocityY = 0;
	self.isFalling = false;
	self.jumpFrame = self.attachAsset('playerJumpFrame', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0 // Hide the jump frame by setting alpha to 0
	});
	self.update = function () {
		if (self.isJumping) {
			self.y += self.velocityY;
			self.velocityY += 0.7; // Decreased gravity effect by 30%
			self.isFalling = self.velocityY > 0;
			self.jumpFrame.alpha = 1; // While jumping, switch to the jump frame
			self.runFrames[self.currentRunFrame].alpha = 0; // Hide the player asset when jumping
			if (self.y >= 2732 / 2) {
				// Ground level
				self.y = 2732 / 2;
				self.isJumping = false;
				self.velocityY = 0;
				self.jumpFrame.alpha = 0; // When not jumping, switch back to the normal frame
				self.runFrames[self.currentRunFrame].alpha = 1; // Show the player asset when not jumping
				// Add a bounce effect
				tween(self, {
					scaleX: 1.2,
					scaleY: 0.8
				}, {
					duration: 100,
					easing: tween.elasticOut,
					onFinish: function onFinish() {
						tween(self, {
							scaleX: 1,
							scaleY: 1
						}, {
							duration: 500,
							easing: tween.elasticOut
						});
					}
				});
			}
		} else {
			// Handle running animation
			if (LK.ticks % 5 === 0) {
				// Fine-tuned interval for balanced and natural pace
				// Adjusted interval for balanced pace
				self.runFrames[self.currentRunFrame].alpha = 0; // Hide current frame
				self.currentRunFrame = (self.currentRunFrame + 1) % self.runFrames.length; // Switch to next frame
				self.runFrames[self.currentRunFrame].alpha = 1; // Show next frame
			}
		}
	};
	self.jump = function () {
		if (!self.isJumping) {
			self.isJumping = true;
			self.velocityY = -self.jumpHeight;
			self.jumpFrame.alpha = 1; // Make jump frame visible
			LK.getSound('jump').play(); // Play jump sound
		}
	};
});

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

/**** 
* Game Code
****/ 
// Import the tween plugin
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
background.x = 0;
background.y = 0;
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 4; // Adjust the player's initial position to be more to the left
player.y = 2732 / 2;
// Initialize enemies
var enemies = [];
var enemySpawnInterval = 100;
var enemySpawnCounter = 0;
// Create a new Text2 object to display the score
var scoreText = new Text2('0', {
	size: 100,
	fill: 0xFFFFFF
});
// Add the score text to the game GUI at the top center of the screen
LK.gui.top.addChild(scoreText);
scoreText.x = 2048 / 2;
scoreText.y = 0;
// Handle game updates
game.update = function () {
	player.update();
	// Spawn enemies
	enemySpawnCounter++;
	if (enemySpawnCounter >= enemySpawnInterval) {
		var enemy = new Enemy();
		enemy.x = 2048;
		enemy.y = player.y + player.height / 2 - enemy.height / 2;
		enemies.push(enemy);
		game.addChild(enemy);
		// Randomize the spawn interval for the next enemy
		enemySpawnInterval = Math.floor(Math.random() * 150) + 50;
		enemySpawnCounter = 0;
	}
	// Update enemies
	for (var j = enemies.length - 1; j >= 0; j--) {
		enemies[j].update();
		if (player.intersects(enemies[j])) {
			if (player.isFalling || !player.isJumping) {
				enemies[j].destroy();
				enemies.splice(j, 1);
			} else {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		} else if (player.x > enemies[j].x && !enemies[j].passed) {
			enemies[j].passed = true;
			LK.setScore(LK.getScore() + 1);
			scoreText.setText(LK.getScore());
		}
	}
};
// Handle player jump
game.down = function (x, y, obj) {
	player.jump();
};
// Play background music
LK.playMusic('bgMusic');