/**** 
* Classes
****/
// Class for individual cubes that can fall
var Cube = Container.expand(function () {
	var self = Container.call(this);
	self.attachAsset('cube', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isFalling = false;
	self.velocityY = 0; // Initial vertical velocity for falling cubes
	self.update = function () {
		if (self.isFalling) {
			self.velocityY += 0.75; // Acceleration due to gravity increased by 50%
			self.y += self.velocityY; // Fall speed with acceleration
		}
	};
});
// Class for the poles consisting of cubes
var Pole = Container.expand(function () {
	var self = Container.call(this);
	self.cubes = [];
	self.addCube = function () {
		var cube = new Cube();
		cube.y = -(self.cubes.length * 100) - (self.cubes.length - 1) * 2;
		self.addChild(cube);
		self.cubes.push(cube);
	};
	self.makeCubesFall = function () {
		for (var i = self.cubes.length - 1; i >= 0; i--) {
			(function (index) {
				LK.setTimeout(function () {
					self.cubes[index].isFalling = true;
				}, index * 250); // Delay between each cube falling
			})(i);
		}
	};
	self.isSliding = false;
	self.slideDownUp = function () {
		if (!self.isSliding) {
			self.isSliding = true;
			var initialY = self.y;
			var step = 1;
			var distance = 10;
			var duration = 200;
			var steps = duration / (1000 / 60);
			var stepSize = distance / steps;
			var currentStep = 0;
			var slideInterval = LK.setInterval(function () {
				if (currentStep < steps) {
					self.y += stepSize;
					currentStep++;
				} else {
					LK.clearInterval(slideInterval);
					self.y = initialY;
					self.isSliding = false;
				}
			}, 1000 / 60);
		}
	};
	self.getHeight = function () {
		return self.cubes.length * 100 + (self.cubes.length - 1) * 2;
	};
});
// Class for the player's hero
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.attachAsset('hero', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.isOnGround = false;
	self.velocityY = 0;
	self.jump = function () {
		if (self.isOnGround) {
			self.velocityY = -15;
			self.velocityX = 5; // Add horizontal velocity to jump forwards
			self.isOnGround = false;
		}
	};
	self.update = function () {
		if (!self.isOnGround) {
			self.y += self.velocityY;
			self.velocityY += 0.5; // Gravity effect
			self.x += self.velocityX; // Move hero forwards while in the air
			if (self.y > 2732 - self.height / 2) {
				LK.showGameOver(); // If hero falls below the screen, game over
			}
		}
	};
});

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

/**** 
* Game Code
****/
// Initialize important asset arrays
// Initialize assets used in the game.
var poles = [];
var hero;
// Create the hero
hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 150; // Start above the bottom of the screen
// Create initial poles
function createInitialPoles() {
	var poleSpacing = 2;
	var poleWidth = 100 + poleSpacing;
	var numPoles = Math.ceil(2048 / poleWidth);
	for (var i = 0; i < numPoles; i++) {
		var pole = game.addChild(new Pole());
		pole.x = i * poleWidth;
		pole.y = 2732 - 50; // Align base of pole with bottom of the screen and raise by 50 pixels
		for (var j = 0; j < 10; j++) {
			// Add 10 cubes to each pole to make them higher
			pole.addCube();
		}
		poles.push(pole);
	}
}
createInitialPoles();
// Event listener for jump action
game.on('down', function (obj) {
	hero.jump();
});
// Game tick update
LK.on('tick', function () {
	hero.update();
	// Collision detection with poles
	for (var i = 0; i < poles.length; i++) {
		var pole = poles[i];
		if (hero.intersects(pole) && hero.velocityY > 0 && hero.y + hero.height / 2 < pole.y) {
			hero.y = pole.y - pole.getHeight() - hero.height / 2;
			hero.isOnGround = true;
			hero.velocityY = 0;
			pole.slideDownUp();
		}
	}
	// Remove off-screen poles and create new ones
	var poleSpacing = 2;
	var poleWidth = 100 + poleSpacing;
	if (poles.length > 0 && poles[0].x + poleWidth / 2 < 0) {
		poles[0].destroy();
		poles.shift();
		var newPole = game.addChild(new Pole());
		newPole.x = poles[poles.length - 1].x + poleWidth;
		newPole.y = 2732 - 50;
		var cubesCount = Math.floor(Math.random() * 9) + 6; // Random number of cubes between 6 and 14 to make poles higher
		for (var j = 0; j < cubesCount; j++) {
			newPole.addCube();
		}
		poles.push(newPole);
	}
	// Move poles to the left to simulate hero running and make cubes fall after passing the middle
	for (var i = 0; i < poles.length; i++) {
		poles[i].x -= 5;
		if (poles[i].x < 2048 / 2 && !poles[i].hasMadeCubesFall) {
			poles[i].makeCubesFall();
			poles[i].hasMadeCubesFall = true;
		}
		// Update each cube in the pole
		for (var j = 0; j < poles[i].cubes.length; j++) {
			poles[i].cubes[j].update();
		}
	}
});