function hsvToRgb(h, s, v) {
	var i = Math.floor(h * 6), f = h * 6 - i, p = v * (1 - s), q = v * (1 - f * s), t = v * (1 - (1 - f) * s), mod = i % 6, r = [v, q, p, p, t, v][mod], g = [t, v, v, q, p, p][mod], b = [p, p, t, v, v, q][mod];
	return (r * 255 << 16) + (g * 255 << 8) + b * 255;
}
var particles = [];
var Particle = Container.expand(function (color) {
	var self = Container.call(this);
	self.graphics = self.createAsset('particle', 'Particle', 0.5, 0.5);
	self.graphics.tint = color;
	self.speedX = (Math.random() - 0.5) * 10;
	self.speedY = (Math.random() - 0.5) * 10;
	self.scaleX = self.scaleY = Math.random() * 0.5 + 0.5;
	self.alpha = 1;
	self.tick = function () {
		self.x += self.speedX;
		self.speedY += 0.7;
		self.y += self.speedY;
		self.alpha -= 0.02;
		if (self.alpha <= 0) {
			var index = particles.indexOf(self);
			if (index > -1) {
				particles.splice(index, 1);
			}
			self.destroy();
		}
	};
});
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartBackground = self.createAsset('heartBackground', 'Heart Background', 0.5, 0.5);
	heartBackground.blendMode = 1;
	var heartGraphics = self.createAsset('heart', 'Life Heart', 0.5, 0.5);
});
var LifeIndicator = Container.expand(function (initialLives) {
	var self = Container.call(this);
	self.lives = initialLives;
	self.hearts = [];
	var heartWidth = 110;
	var totalWidth = (self.lives - 1) * (heartWidth + 10);
	var startX = -totalWidth / 2;
	for (var i = 0; i < self.lives; i++) {
		var heart = new Heart();
		heart.x = startX + i * (heartWidth + 10);
		self.hearts.push(heart);
		self.addChild(heart);
	}
	self.updateLives = function (lives) {
		lives = Math.max(0, lives);
		while (self.hearts.length > lives) {
			var heart = self.hearts.pop();
			if (heart) {
				heart.destroy();
			}
		}
		while (self.hearts.length < lives) {
			var newHeart = new Heart();
			var heartWidth = 100;
			newHeart.x = startX + self.hearts.length * (heartWidth + 10);
			self.hearts.push(newHeart);
			self.addChild(newHeart);
		}
		self.lives = lives;
	};
});
var Snowflake = Container.expand(function () {
	var self = Container.call(this);
	self.rotation = Math.random() * Math.PI * 2;
	self.rotationSpeed = Math.random() * 0.05 - 0.025;
	var flakeGraphics = self.createAsset('snowflake', 'Snowflake', 0.5, 0.5);
	self.speed = Math.random() * 1.5 + 1;
	self.direction = Math.random() * Math.PI * 2;
	self.xSpeed = Math.cos(self.direction) * Math.abs(Math.random() * 1 + 0.5);
	self.ySpeed = Math.abs(Math.sin(self.direction)) * self.speed;
	self.tick = function () {
		self.x += self.xSpeed;
		self.y += self.ySpeed;
		self.scale.x = self.scale.y = 0.5 + self.ySpeed / 6;
		self.rotation += self.rotationSpeed;
		if (self.x > 2048 || self.x < 0 || self.y > 2732) {
			self.x = Math.random() * 2048;
			self.y = -50;
		}
	};
});
var Cell = Container.expand(function (type, totalTypes) {
	var self = Container.call(this);
	self.targetX = 0;
	self.targetY = 0;
	self.isMoving = false;
	self.totalTypes = totalTypes;
	self.type = typeof type === 'undefined' ? Math.floor(Math.random() * self.totalTypes) : type;
	var assetName = 'cellType' + self.type;
	var cellBackground = self.createAsset('cellBackground', 'Cell Background', .5, .5);
	cellBackground.alpha = 0;
	var cellGraphics = self.createAsset(assetName, 'Grid Cell Type ' + self.type, .5, .5);
	self.move = function (x, y, instant) {
		self.targetX = x;
		self.targetY = y;
		if (instant) {
			self.x = x;
			self.y = y;
		}
	};
	self.tick = function () {
		var acceleration = 2;
		self.speedX = self.speedX || 0;
		self.speedY = self.speedY || 0;
		var threshold = 1;
		var dx = self.targetX - self.x;
		var dy = self.targetY - self.y;
		if (Math.abs(dx) < threshold && Math.abs(dy) < threshold) {
			self.x = self.targetX;
			self.y = self.targetY;
			self.isMoving = false;
			self.speedX = 0;
			self.speedY = 0;
		} else {
			if (dx !== 0) {
				self.speedX += dx > 0 ? acceleration : -acceleration;
			}
			if (dy !== 0) {
				self.speedY += dy > 0 ? acceleration : -acceleration;
			}
			var nextX = self.x + self.speedX;
			var nextY = self.y + self.speedY;
			if (self.speedX > 0 && nextX > self.targetX || self.speedX < 0 && nextX < self.targetX) {
				nextX = self.targetX;
				self.speedX = 0;
			}
			if (self.speedY > 0 && nextY > self.targetY || self.speedY < 0 && nextY < self.targetY) {
				nextY = self.targetY;
				self.speedY = 0;
			}
			self.x = nextX;
			self.y = nextY;
			self.isMoving = self.x !== self.targetX || self.y !== self.targetY;
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	Game.prototype.createParticleEffect = function (x, y, type) {
		var fixedColors = [0x82d756, 0x5ecde9, 0xffb5b5, 0xd7402f, 0x96eb61, 0xfdc143, 0xf9ffff, 0xc76d49];
		var color = fixedColors[type % fixedColors.length];
		for (var i = 0; i < 10; i++) {
			var particle = new Particle(color);
			particle.x = x + gridContainer.x;
			particle.y = y + gridContainer.y;
			particles.push(particle);
			this.addChild(particle);
		}
	};
	self.totalCellTypes = 2;
	var score = 0;
	Game.prototype.hasPossibleMoves = function () {
		for (var col = 0; col < gridWidth; col++) {
			for (var row = 0; row < gridHeight; row++) {
				var cell = grid[col][row];
				if (cell) {
					var neighbors = [{
						x: col - 1,
						y: row
					}, {
						x: col + 1,
						y: row
					}, {
						x: col,
						y: row - 1
					}, {
						x: col,
						y: row + 1
					}];
					for (var i = 0; i < neighbors.length; i++) {
						var pos = neighbors[i];
						if (pos.x >= 0 && pos.x < gridWidth && pos.y >= 0 && pos.y < gridHeight) {
							var neighborCell = grid[pos.x][pos.y];
							if (neighborCell && neighborCell.type === cell.type) {
								return true;
							}
						}
					}
				}
			}
		}
		return false;
	};
	self.resetBoard = function () {
		grid.forEach(function (column, colIndex) {
			column.forEach(function (cell, rowIndex) {
				if (cell) {
					self.deleteCell(cell);
				}
				var newCell = new Cell(undefined, self.totalCellTypes);
				var targetPos = self.calculateTargetPosition(colIndex, rowIndex);
				newCell.move(targetPos.x, targetPos.y, true);
				self.attachCellListeners(newCell);
				newCell.y = -100;
				grid[colIndex][rowIndex] = newCell;
				gridContainer.addChild(newCell);
			});
		});
	};
	var background = self.createAsset('background', 'Game Background', 0.5, 0.5);
	background.x = 2048 / 2;
	background.y = 2732 / 2;
	self.addChild(background);
	var gridWidth = 8;
	var gridHeight = 8;
	var gridSpacing = 8;
	var cellWidth = 210;
	var cellHeight = 210;
	var gridContainer = new Container();
	var boardBackground = self.createAsset('boardBackground', 'Board Background', 0.5, 0.5);
	boardBackground.alpha = 0.7;
	gridContainer.addChildAt(boardBackground, 0);
	self.addChild(gridContainer);
	var totalGridWidth = gridWidth * (cellWidth + gridSpacing) - gridSpacing;
	var totalGridHeight = gridHeight * (cellHeight + gridSpacing) - gridSpacing;
	gridContainer.x = (2048 - totalGridWidth) / 2 + cellWidth / 2;
	gridContainer.y = (2732 - totalGridHeight) / 2 + cellHeight / 2 + 140;
	boardBackground.x = totalGridWidth / 2 - cellWidth / 2;
	boardBackground.y = totalGridHeight / 2 - cellHeight / 2 + 20;
	self.calculateTargetPosition = function (col, row) {
		return {
			x: col * (cellWidth + gridSpacing),
			y: row * (cellHeight + gridSpacing)
		};
	};
	self.findConnectedNeighbors = function (cell, connectedNeighbors) {
		connectedNeighbors = connectedNeighbors || [];
		if (!cell) return [];
		var cellType = cell.type;
		var cellColRow = self.findCellColRow(cell);
		if (cellColRow) {
			var directions = [[-1, 0], [1, 0], [0, -1], [0, 1]];
			directions.forEach(function (dir) {
				var newRow = cellColRow.row + dir[0];
				var newCol = cellColRow.col + dir[1];
				if (newRow >= 0 && newRow < gridHeight && newCol >= 0 && newCol < gridWidth) {
					var neighborCell = grid[newCol][newRow];
					if (neighborCell && neighborCell.type === cellType && connectedNeighbors.indexOf(neighborCell) === -1) {
						connectedNeighbors.push(neighborCell);
						self.findConnectedNeighbors(neighborCell, connectedNeighbors);
					}
				}
			});
		}
		return connectedNeighbors;
	};
	self.findCellColRow = function (cell) {
		for (var col = 0; col < gridWidth; col++) {
			for (var row = 0; row < gridHeight; row++) {
				if (grid[col][row] === cell) {
					return {
						col: col,
						row: row
					};
				}
			}
		}
		return null;
	};
	self.deleteCell = function (cell) {
		var colRow = self.findCellColRow(cell);
		if (colRow) {
			grid[colRow.col][colRow.row] = null;
			self.createParticleEffect(cell.x, cell.y, cell.type);
			cell.destroy();
		}
	};
	self.attachCellListeners = function (cell) {
		cell.on('down', function (obj) {
			var connectedNeighbors = self.findConnectedNeighbors(cell);
			if (connectedNeighbors.length > 0) {
				score += 10 * connectedNeighbors.length + (connectedNeighbors.length - 2) * 5;
				scoreText.setText(score.toString());
				var cellsToDestroy = [cell].concat(connectedNeighbors);
				cellsToDestroy.forEach(function (cell) {
					self.deleteCell(cell);
				});
				self.moveToEmptySpace('down', false);
				self.moveToEmptySpace('left', true);
			}
		});
		cell.on('up', function (obj) {});
		cell.on('move', function (obj) {});
	};
	var grid = [];
	var scoreText = new Text2(score.toString(), {
		size: 150,
		fill: "#ffffff",
		weight: '800',
		dropShadow: true,
		dropShadowColor: '#000000',
		dropShadowBlur: 4,
		dropShadowAngle: Math.PI / 6,
		dropShadowDistance: 6
	});
	scoreText.anchor.set(.5, 0);
	LK.gui.topCenter.addChild(scoreText);
	var lifeIndicator = new LifeIndicator(10);
	lifeIndicator.y = 250;
	LK.gui.topCenter.addChild(lifeIndicator);
	for (var i = 0; i < gridWidth; i++) {
		grid[i] = [];
		for (var j = 0; j < gridHeight; j++) {
			var cell = new Cell(undefined, self.totalCellTypes);
			var targetPos = self.calculateTargetPosition(i, j);
			cell.move(targetPos.x, targetPos.y, true);
			self.attachCellListeners(cell);
			grid[i][j] = cell;
			gridContainer.addChild(cell);
		}
	}
	self.moveToEmptySpace = function (direction, rowMode) {
		var moved;
		do {
			moved = false;
			var dx = direction === 'left' ? 1 : direction === 'right' ? -1 : 0;
			var dy = direction === 'up' ? 1 : direction === 'down' ? -1 : 0;
			for (var col = 0; col < gridWidth; col++) {
				for (var row = 0; row < gridHeight; row++) {
					if (!grid[col][row]) {
						var isRowOrColumnEmpty = true;
						if (rowMode) {
							for (var checkIndex = 0; checkIndex < (direction === 'left' || direction === 'right' ? gridHeight : gridWidth); checkIndex++) {
								isRowOrColumnEmpty = isRowOrColumnEmpty && !grid[direction === 'left' || direction === 'right' ? col : checkIndex][direction === 'up' || direction === 'down' ? row : checkIndex];
							}
						}
						if (isRowOrColumnEmpty) {
							if (rowMode) {
								for (var checkIndex = 0; checkIndex < (direction === 'left' || direction === 'right' ? gridHeight : gridWidth); checkIndex++) {
									var targetCol = direction === 'left' || direction === 'right' ? col : checkIndex;
									var targetRow = direction === 'up' || direction === 'down' ? row : checkIndex;
									if (targetCol + dx >= 0 && targetCol + dx < gridWidth && targetRow + dy >= 0 && targetRow + dy < gridHeight && grid[targetCol + dx][targetRow + dy]) {
										var targetCell = grid[targetCol + dx][targetRow + dy];
										var targetPos = self.calculateTargetPosition(targetCol, targetRow);
										targetCell.move(targetPos.x, targetPos.y);
										grid[targetCol][targetRow] = targetCell;
										grid[targetCol + dx][targetRow + dy] = null;
										moved = true;
									}
								}
							} else {
								var targetCol = col + dx;
								var targetRow = row + dy;
								if (targetCol >= 0 && targetCol < gridWidth && targetRow >= 0 && targetRow < gridHeight && grid[targetCol][targetRow]) {
									var targetCell = grid[targetCol][targetRow];
									var targetPos = self.calculateTargetPosition(col, row);
									targetCell.move(targetPos.x, targetPos.y);
									grid[col][row] = targetCell;
									grid[targetCol][targetRow] = null;
									moved = true;
								}
							}
						}
					}
				}
			}
		} while (moved);
	};
	var maxSnowflakes = 100;
	var snowflakeContainer = new Container();
	self.addChildAt(snowflakeContainer, 1);
	var snowflakes = [];
	for (var i = 0; i < maxSnowflakes; i++) {
		var flake = new Snowflake();
		flake.x = Math.random() * 2048;
		flake.y = Math.random() * 2732;
		snowflakeContainer.addChild(flake);
		snowflakes.push(flake);
	}
	LK.on('tick', function () {
		for (var i = 0; i < gridWidth; i++) {
			for (var j = 0; j < gridHeight; j++) {
				if (grid[i][j]) grid[i][j].tick();
			}
		}
		for (var i = 0; i < particles.length; i++) {
			particles[i].tick();
		}
		for (var i = 0; i < snowflakes.length; i++) {
			snowflakes[i].tick();
		}
		var cellsAreMoving = grid.some(function (column) {
			return column.some(function (cell) {
				return cell && cell.isMoving;
			});
		});
		if (!cellsAreMoving && !self.hasPossibleMoves()) {
			self.totalCellTypes = Math.min(8, 3 + Math.floor(score / 2000));
			var tilesLeft = grid.reduce(function (acc, column) {
				return acc + column.filter(function (cell) {
					return cell !== null;
				}).length;
			}, 0);
			lifeIndicator.updateLives(lifeIndicator.lives - tilesLeft);
			if (lifeIndicator.lives <= 0) {
				LK.showGameOver();
			} else {
				self.resetBoard();
			}
		}
	});
});