/**** 
* Classes
****/ 
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Dragon class to represent the player character
var Dragon = Container.expand(function () {
	var self = Container.call(this);
	var dragonGraphics = self.attachAsset('dragon', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		smooth: true,
		filterQuality: 2
	});
	self.speed = 15; // Increase the speed of the dragon
	self.update = function () {
		// Update logic for the dragon to flip based on movement direction
		if (self.x < 2048 / 2) {
			dragonGraphics.scaleX = -1; // Flip horizontally when on the left side of the screen
		} else {
			dragonGraphics.scaleX = 1; // Normal orientation when on the right side of the screen
		}
		// Removed unnecessary variable to optimize performance
	};
});
// Fireball class to represent the fireballs that the dragon shoots
var Fireball = Container.expand(function () {
	var self = Container.call(this);
	var fireballGraphics = self.attachAsset('Shout', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.0,
		scaleY: 1.0,
		smooth: true,
		filterQuality: 1
	});
	self.speed = 30; // Further increase the speed of the fireball
	self.update = function () {
		// Move the fireball straight down
		self.y += self.speed;
	};
});
// HealthBar class to represent the player's health
var HealthBar = Container.expand(function () {
	var self = Container.call(this);
	var healthBarGraphics = self.attachAsset('healthBar', {
		anchorX: 0.0,
		anchorY: 0.0,
		scaleX: 2530 / 1000,
		// Scale to fit the game width
		scaleY: 0.1
	});
	self.maxHealth = 1000;
	self.currentHealth = self.maxHealth;
	self.update = function () {
		healthBarGraphics.scaleX = self.currentHealth / self.maxHealth;
		healthBarGraphics.scaleY = 0.05; // Resize the health bar to fit the top of the screen
	};
});
// Tree class to represent the first object
var Tree = Container.expand(function () {
	var self = Container.call(this);
	var treeGraphics = self.attachAsset('Tree01', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.8,
		scaleY: 0.8,
		smooth: true,
		filterQuality: 1
	});
	self.speed = 10; // Further increase the speed of the tree
	self.update = function () {
		// Move the tree straight up
		self.y -= self.speed;
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000,
	//Init game with black background
	height: 3000 // Increase the game screen height
});

/**** 
* Game Code
****/ 
// Initialize game variables
var dragon;
var spheres = [];
var fireballs = []; // Initialize fireballs array
var score = 0; // Initialize score to 0
var scoreTxt;
var level = 1; // Initialize level to 1
// Add background image to the game for level 1
if (level === 1) {
	var background = LK.getAsset('Background', {
		anchorX: 0.0,
		anchorY: 0.0
	});
	background = game.addChild(background);
	background.width = game.width;
	background.height = game.height;
	background.smooth = true; // Enable smoothing to remove pixelation
	background.filterQuality = 5; // Reduce the filter quality to optimize performance
	background.scale.set(game.width / background.width, game.height / background.height); // Scale the background to fit the screen
	// Refresh the background to be clearer & fit to screen every 60 ticks
	game.update = function () {
		background.x = 2048 / 2 + Math.sin(LK.ticks * 0.2) * 20; // Increase shake intensity left and right around the center
		background.y = 2732 / 2 + Math.sin(LK.ticks * 0.2) * 20; // Increase shake intensity up and down around the center
		if (background.y >= 2732) {
			background.y = -2732;
		}
	};
}
// Add background2 image to the game for level 2
if (level === 2) {
	var background2 = LK.getAsset('Background2', {
		anchorX: 0.0,
		anchorY: 0.0
	});
	background2 = game.addChild(background2);
	background2.width = game.width;
	background2.height = game.height;
	background2.smooth = true; // Enable smoothing to remove pixelation
	background2.filterQuality = 5; // Reduce the filter quality to optimize performance
	background2.scale.set(game.width / background2.width, game.height / background2.height); // Scale the background to fit the screen
	// Refresh the background2 to be clearer & fit to screen every 60 ticks
	game.update = function () {
		background2.y += 2;
		if (background2.y >= 2732) {
			background2.y = -2732;
		}
	};
}
// Function to handle game updates
var lastFrameTime = performance.now();
var frameTimes = [];
var maxFrameTime = 16.67; // Target frame time for 60 FPS
game.update = function () {
	var currentFrameTime = performance.now();
	var deltaTime = currentFrameTime - lastFrameTime;
	lastFrameTime = currentFrameTime;
	frameTimes.push(deltaTime);
	if (frameTimes.length > 60) {
		frameTimes.shift();
	}
	var averageFrameTime = frameTimes.reduce(function (a, b) {
		return a + b;
	}, 0) / frameTimes.length;
	if (averageFrameTime > maxFrameTime) {
		// If the average frame time is greater than the target, reduce game speed
		dragon.speed *= 0.95;
		fireballs.forEach(function (fireball) {
			return fireball.speed *= 0.95;
		});
		spheres.forEach(function (tree) {
			return tree.speed *= 0.95;
		});
	} else {
		// If the average frame time is less than the target, increase game speed
		dragon.speed *= 1.05;
		fireballs.forEach(function (fireball) {
			return fireball.speed *= 1.05;
		});
		spheres.forEach(function (tree) {
			return tree.speed *= 1.05;
		});
	}
	// Update dragon position based on touch input
	if (!LK.gameOver && dragNode && dragNode.global) {
		dragNode.x = game.toLocal(dragNode.global).x;
	}
	// Reuse off-screen trees or spawn new ones if necessary
	if (!LK.gameOver && LK.ticks % 100 == 0) {
		// Reduce the interval for spawning trees
		var newTree;
		for (var i = 0; i < spheres.length; i++) {
			if (spheres[i].y < -200) {
				// Check if the tree is off-screen
				newTree = spheres[i];
				break;
			}
		}
		if (!newTree) {
			newTree = new Tree();
			spheres.push(newTree);
			game.addChild(newTree);
		}
		newTree.x = Math.random() * (2048 - newTree.width) + newTree.width / 2;
		newTree.y = 2732;
	}
	// Check for collisions between fireballs and rocks
	for (var i = fireballs.length - 1; i >= 0; i--) {
		for (var j = spheres.length - 1; j >= 0; j--) {
			if (fireballs[i].intersects(spheres[j])) {
				// Add random points from 0-40 when the dragon shoots the trees
				var points = Math.floor(Math.random() * 41);
				score += points;
				// Remove the fireball and tree from the game
				fireballs[i].destroy();
				fireballs.splice(i, 1);
				spheres[j].destroy();
				spheres.splice(j, 1);
				break;
			}
		}
	}
	// Check for collisions between dragon and rocks
	for (var j = spheres.length - 1; j >= 0; j--) {
		if (dragon.intersects(spheres[j])) {
			// Decrease the dragon's health
			healthBar.currentHealth -= 20; // Decrease the damage taken by the dragon from rock01
			// Remove the rock from the game
			spheres[j].destroy();
			spheres.splice(j, 1);
			break;
		}
		// Remove off-screen trees
		if (spheres[j].y < -200) {
			spheres[j].destroy();
			spheres.splice(j, 1);
		}
	}
	// Update the score display when the dragon gets points
	scoreTxt.setText('Score: ' + score);
	// Regenerate player's health to max when score reaches 1000
	if (score >= 1000) {
		healthBar.currentHealth = healthBar.maxHealth;
	}
	// Transition to level 2 when score reaches 1234
	if (score >= 1234 && level === 1) {
		level = 2;
		levelTxt.setText('Level: 2');
		// Remove current background
		game.removeChild(background);
		// Add background2 for level 2
		var background2 = LK.getAsset('Background2', {
			anchorX: 0.0,
			anchorY: 0.0
		});
		background2 = game.addChild(background2);
		background2.width = game.width;
		background2.height = game.height;
		background2.smooth = true;
		background2.filterQuality = 5;
		background2.scale.set(game.width / background2.width, game.height / background2.height);
		// Refresh the background2 to be clearer & fit to screen every 60 ticks
		game.update = function () {
			background2.x = 2048 / 2 + Math.sin(LK.ticks * 0.2) * 20; // Increase shake intensity left and right around the center
			background2.y = 2732 / 2 + Math.sin(LK.ticks * 0.2) * 20; // Increase shake intensity up and down around the center
			if (background2.y >= 2732) {
				background2.y = -2732;
			}
		};
	}
};
// Initialize dragon
dragon = game.addChild(new Dragon());
dragon.x = 2048 / 2;
dragon.y = 200;
// Initialize level display
var levelTxt = new Text2('Level: 1', {
	size: 100,
	fill: 0x800080,
	// Purple color
	font: "'Time new roman',Impact,'Arial Black',Tahoma"
});
levelTxt.anchor.set(1, 1);
LK.gui.bottomRight.addChild(levelTxt);
levelTxt.x = -50; // Move the level text to the right side of the screen
levelTxt.y = -50; // Position the level text at the bottom of the screen
// Initialize score display
scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: 0x800080,
	// Purple color
	font: "'Time new roman',Impact,'Arial Black',Tahoma"
});
LK.gui.top.addChild(scoreTxt);
scoreTxt.anchor.set(0, 0); // Sets anchor to the left of the top edge of the text.
scoreTxt.x = 50; // Position the score text a little bit to the right
scoreTxt.y = levelTxt.y - scoreTxt.height - 100; // Position the score text 100 pixels above the level text
// Initialize health bar
var healthBar = game.addChild(new HealthBar());
healthBar.x = 2000 / 2 - healthBar.width / 2 + 100; // Move health bar to the right a little bit
healthBar.y = 2710 - healthBar.height / 2; // Move health bar to the middle of the bottom side
scoreTxt.anchor.set(0, 1);
LK.gui.bottomLeft.addChild(scoreTxt);
scoreTxt.x = 50; // Position the score text a little bit to the right
scoreTxt.y = -50; // Position the score text above the health bar
// Handle touch input for dragging the dragon
var dragNode = null;
game.down = function (x, y, obj) {
	dragNode = dragon;
};
game.up = function (x, y, obj) {
	dragNode = null;
};
game.move = function (x, y, obj) {
	if (dragNode) {
		// Limit the dragon's movement to the game area
		var newX = Math.max(dragon.width / 2, Math.min(2048 - dragon.width / 2, x));
		var newY = Math.max(dragon.height / 2, Math.min(2732 - dragon.height / 2, y));
		dragNode.x = newX;
		dragNode.y = newY;
		// Shoot a fireball at regular intervals
		if (LK.ticks % 10 == 0) {
			// Reduce the interval for shooting fireballs
			for (var i = 0; i < 1; i++) {
				var fireball = new Fireball();
				fireball.x = dragon.x;
				fireball.y = dragon.y;
				fireballs.push(fireball);
				game.addChild(fireball);
			}
		}
	}
};