/**** 
* Classes
****/ 
// Class for Bird
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.x += self.speed;
		self.y += Math.sin(self.x / 100) * 2; // Add vertical movement based on sine wave
		if (self.x > 2048 + birdGraphics.width / 2) {
			self.x = -birdGraphics.width / 2;
		}
	};
});
// Class for Crane
var Crane = Container.expand(function () {
	var self = Container.call(this);
	var craneGraphics = self.attachAsset('crane', {
		anchorX: 0.5,
		anchorY: 0.0
	});
});
// Class for Dove
var Dove = Container.expand(function () {
	var self = Container.call(this);
	var doveGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.x += self.speed;
		self.y += Math.sin(self.x / 100) * 2; // Add vertical movement based on sine wave
		if (self.x > 2048 + doveGraphics.width / 2) {
			self.x = -doveGraphics.width / 2;
		}
	};
});
var DoveBird = Container.expand(function () {
	var self = Container.call(this);
	var doveBirdGraphics = self.attachAsset('dovebird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 4;
	self.update = function () {
		self.x -= self.speed;
		self.y += Math.sin(self.x / 100) * 2; // Add vertical movement based on sine wave
		if (self.x < -doveBirdGraphics.width / 2) {
			self.x = 2048 + doveBirdGraphics.width / 2;
		}
	};
});
// Class for TowerBlock
var TowerBlock = Container.expand(function () {
	var self = Container.call(this);
	var blockGraphics = self.attachAsset('towerBlock', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.swayDirection = 1;
	self.swaySpeed = 1;
	self.update = function () {
		self.x += self.swaySpeed * self.swayDirection * 1.5;
		if (self.x > 2048 - blockGraphics.width / 2 || self.x < blockGraphics.width / 2) {
			self.swayDirection *= -1; // Reverse direction when reaching the edge
		}
	};
});

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

/**** 
* Game Code
****/ 
var sky = game.addChild(LK.getAsset('sky', {
	anchorX: 0,
	anchorY: 0,
	x: 0,
	y: 0
}));
var crane = new Crane();
crane.x = currentBlock ? currentBlock.x : 2048 / 2;
crane.y = 0;
game.addChild(crane);
var grass = game.addChild(LK.getAsset('grass', {
	anchorX: 0,
	anchorY: 1,
	x: 0,
	y: 2732
}));
// Initialize variables
var towerBlocks = [];
var baseY = 2500; // Base row position
var currentBlock = null;
var counter = 20; // Initialize counter
var counterTxt = new Text2('Remaining Building Blocks: ' + counter.toString(), {
	size: 37.5,
	fill: 0xFFFFFF
}); // Create counter text
counterTxt.anchor.set(0, 0); // Set anchor to top left
LK.gui.topLeft.addChild(counterTxt); // Add counter text to top left corner of the map
// Function to drop the current block
function dropBlock() {
	if (currentBlock) {
		currentBlock.swaySpeed = 0; // Stop swaying
		towerBlocks.push(currentBlock);
		currentBlock = null;
	}
}
// Create a new block at the top of the screen
function createNewBlock() {
	// Create a new block at the top of the screen
	function createNewBlock() {
		if (counter > 0) {
			currentBlock = new TowerBlock();
			currentBlock.x = 2048 / 2;
			currentBlock.y = 100;
			game.addChild(currentBlock);
			counter--; // Decrease counter by one
			counterTxt.setText('Remaining Building Blocks: ' + counter.toString()); // Update counter text
		}
	}
	currentBlock = new TowerBlock();
	currentBlock.x = 2048 / 2;
	currentBlock.y = 100;
	game.addChild(currentBlock);
}
// Handle screen tap to drop the block
game.down = function (x, y, obj) {
	if (!currentBlock && counter > 0) {
		currentBlock = new TowerBlock();
		currentBlock.x = 2048 / 2;
		currentBlock.y = 100;
		game.addChild(currentBlock);
		counter--; // Decrease counter by one
		counterTxt.setText('Remaining Building Blocks: ' + counter.toString()); // Update counter text
	}
	if (!currentBlock && counter > 0) {
		currentBlock = new TowerBlock();
		currentBlock.x = 2048 / 2;
		currentBlock.y = 100;
		game.addChild(currentBlock);
	}
	var lastSwayDirection = currentBlock ? currentBlock.swayDirection : 1; // Save the sway direction of the current block, default to 1 if null
	dropBlock();
	if (counter > 0) {
		// Check if counter is greater than zero
		createNewBlock();
		currentBlock.x = towerBlocks[towerBlocks.length - 1].x; // Set the x position of the new block to the x position of the last block in the towerBlocks array
		currentBlock.swayDirection = lastSwayDirection; // Set the sway direction of the new block to the saved sway direction
		counter--; // Decrease counter by one
		counterTxt.setText('Remaining Building Blocks: ' + counter.toString()); // Update counter text
	}
};
// Initialize the first block
if (counter > 0) {
	createNewBlock();
} else {
	currentBlock = null; // Ensure no new block is created if counter is zero
}
// Add birds to the game
for (var i = 0; i < 2; i++) {
	var bird = new Bird();
	bird.x = Math.random() * 2048;
	bird.y = Math.random() * (2732 / 2);
	game.addChild(bird);
}
// Add doves to the game
for (var i = 0; i < 3; i++) {
	var dove = new Dove();
	dove.x = Math.random() * 2048;
	dove.y = Math.random() * (2732 / 2);
	game.addChild(dove);
}
// Add dovebirds to the game
for (var i = 0; i < 2; i++) {
	var doveBird = new DoveBird();
	doveBird.x = Math.random() * 2048;
	doveBird.y = Math.random() * (2732 / 2);
	game.addChild(doveBird);
}
// Update function for the game
game.update = function () {
	if (currentBlock) {
		currentBlock.update();
		crane.x = currentBlock ? currentBlock.x : towerBlocks.length > 0 ? towerBlocks[towerBlocks.length - 1].x : crane.x;
	}
	// Update positions of all blocks
	for (var i = 0; i < towerBlocks.length; i++) {
		towerBlocks[i].y += 10; // Increase the falling speed of blocks
		// Check if the block has collided with the grass
		if (towerBlocks[i].intersects(grass)) {
			towerBlocks[i].y = grass.y - towerBlocks[i].height / 2; // Position the block on top of the grass
			towerBlocks[i].swaySpeed = 0; // Stop the block from moving
		}
		// Check if the block has collided with another block
		for (var j = 0; j < towerBlocks.length; j++) {
			if (i != j && towerBlocks[i].intersects(towerBlocks[j])) {
				towerBlocks[i].y = towerBlocks[j].y - towerBlocks[i].height; // Position the block on top of the other block
				towerBlocks[i].swaySpeed = 0; // Stop the block from moving
				towerBlocks[i].swayDirection = 0; // Ensure no further movement occurs
				// Initialize lastX for tracking changes on X
				if (towerBlocks[i].lastX === undefined) {
					towerBlocks[i].lastX = towerBlocks[i].x;
					towerBlocks[i].lastX = towerBlocks[i].x;
				}
				// Check if at least 90% of the tower block fits on the underlying one
				if (towerBlocks[j] && Math.abs(towerBlocks[i].x - towerBlocks[j].x) > towerBlocks[i].width * 0.1) {
					// If not, slide it off animatedly
					towerBlocks[i].x += towerBlocks[i].x < towerBlocks[j].x ? -5 : 5;
					// If not, slide it off animatedly
					towerBlocks[i].x += towerBlocks[i].x < towerBlocks[j].x ? -5 : 5;
					// Check if the block has fallen off completely
					if (towerBlocks[i].lastX <= 0 && towerBlocks[i].x > 0) {
						towerBlocks[i].destroy(); // Remove the block from the game
						towerBlocks.splice(i, 1); // Remove the block from the array
						i--; // Adjust the index after removal
					} else if (towerBlocks[i].y > 2732) {
						towerBlocks[i].destroy(); // Remove the block from the game
						towerBlocks.splice(i, 1); // Remove the block from the array
						i--; // Adjust the index after removal
						// Check if the block has fallen off the map
						towerBlocks[i].destroy(); // Remove the block from the game
						towerBlocks.splice(i, 1); // Remove the block from the array
						i--; // Adjust the index after removal
					}
				}
				// Update last known states
				towerBlocks[i].lastX = towerBlocks[i].x;
				break; // Prevent block from bouncing by breaking the loop once a collision is detected
			}
		}
	}
	// Play dove sound in loop
	if (LK.ticks % 420 == 0) {
		LK.getSound('Dove').play();
		LK.playMusic('Birds');
	}
};