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

/**** 
* Classes
****/ 
var AIPlayer = Container.expand(function () {
	var self = Container.call(this);
	self.makeMove = function () {
		// Only make a move if it's AI's turn
		if (game.gameState !== 'aiTurn') {
			return false;
		}
		var units = game.getTeamUnits('red');
		var moveFound = false;
		// First priority: attack if possible
		for (var i = 0; i < units.length; i++) {
			var unit = units[i];
			var attacks = unit.getPossibleAttacks(game.grid);
			if (attacks.length > 0) {
				// Prioritize attacking king
				var kingAttack = attacks.find(function (attack) {
					return game.grid[attack.row][attack.col].occupiedBy && game.grid[attack.row][attack.col].occupiedBy.isKing;
				});
				if (kingAttack) {
					game.selectUnit(unit);
					game.attackCell(game.grid[kingAttack.row][kingAttack.col]);
					return true;
				}
				// Look for advantageous critical attacks first
				var criticalAttack = attacks.find(function (attack) {
					var target = game.grid[attack.row][attack.col].occupiedBy;
					return target && isCriticalDamage(unit.type, target.type);
				});
				if (criticalAttack) {
					game.selectUnit(unit);
					game.attackCell(game.grid[criticalAttack.row][criticalAttack.col]);
					return true;
				}
				// For warriors, prioritize attacks to use their instant kill
				if (unit.type === 'warrior' && attacks.length > 0) {
					game.selectUnit(unit);
					game.attackCell(game.grid[attacks[0].row][attacks[0].col]);
					return true;
				}
				// For wizards, prioritize attack positions that can hit multiple enemies
				if (unit.type === 'wizard' && attacks.length > 0) {
					// Try to find attack that might hit multiple enemies due to area effect
					var bestAttack = attacks[0];
					var bestCount = 0;
					for (var j = 0; j < attacks.length; j++) {
						var attack = attacks[j];
						var adjacentCells = getAdjacentCells(attack.row, attack.col);
						var enemyCount = 0;
						// Count adjacent enemy units
						for (var k = 0; k < adjacentCells.length; k++) {
							var cell = adjacentCells[k];
							if (cell.occupied && cell.occupiedBy.team === 'blue') {
								enemyCount++;
							}
						}
						if (enemyCount > bestCount) {
							bestCount = enemyCount;
							bestAttack = attack;
						}
					}
					game.selectUnit(unit);
					game.attackCell(game.grid[bestAttack.row][bestAttack.col]);
					return true;
				}
				// Otherwise attack first available target
				game.selectUnit(unit);
				game.attackCell(game.grid[attacks[0].row][attacks[0].col]);
				return true;
			}
		}
		// Second priority: move toward player king
		var playerKing = game.getKing('blue');
		if (playerKing) {
			// Find unit closest to player king that can move
			var closestUnit = null;
			var closestDistance = Infinity;
			for (var i = 0; i < units.length; i++) {
				var unit = units[i];
				var moves = unit.getPossibleMoves(game.grid);
				if (moves.length > 0) {
					var dist = Math.abs(unit.row - playerKing.row) + Math.abs(unit.col - playerKing.col);
					// Give priority to certain unit types based on their strengths
					if (unit.type === 'knight') {
						// Knights are mobile, so give them priority
						dist -= 2;
					} else if (unit.type === 'archer') {
						// Archers should try to get in position but not too close
						if (dist > 4) dist -= 1; // Encourage moving closer if far away
						else if (dist < 3) dist += 2; // Discourage getting too close
					} else if (unit.type === 'warrior') {
						// Warriors should get close for their instant kill
						dist -= 3;
					} else if (unit.type === 'wizard') {
						// Wizards should stay at medium distance for area attacks
						if (dist > 3 && dist < 6) dist -= 2;
					}
					if (dist < closestDistance) {
						closestUnit = unit;
						closestDistance = dist;
					}
				}
			}
			if (closestUnit) {
				var bestMove = null;
				var bestMoveScore = -Infinity;
				var moves = closestUnit.getPossibleMoves(game.grid);
				// Score each possible move
				for (var i = 0; i < moves.length; i++) {
					var move = moves[i];
					var moveScore = closestDistance - (Math.abs(move.row - playerKing.row) + Math.abs(move.col - playerKing.col));
					// Special movement strategy based on unit type
					if (closestUnit.type === 'knight') {
						// Knights should try to position for attack next turn
						var potentialAttackRange = Math.abs(move.row - playerKing.row) + Math.abs(move.col - playerKing.col);
						if (potentialAttackRange <= closestUnit.attackRange + 1) {
							moveScore += 3;
						}
					} else if (closestUnit.type === 'archer') {
						// Archers want to be at their optimal attack range
						var distAfterMove = Math.abs(move.row - playerKing.row) + Math.abs(move.col - playerKing.col);
						if (distAfterMove >= 3 && distAfterMove <= 5) {
							moveScore += 4;
						}
					} else if (closestUnit.type === 'wizard') {
						// Wizards prefer positions that might hit multiple units next turn
						var adjacentCells = getAdjacentCells(move.row, move.col);
						var playerUnitsNearby = 0;
						for (var j = 0; j < adjacentCells.length; j++) {
							var cell = adjacentCells[j];
							if (cell.occupied && cell.occupiedBy.team === 'blue') {
								playerUnitsNearby++;
							}
						}
						moveScore += playerUnitsNearby * 2;
					}
					if (moveScore > bestMoveScore) {
						bestMove = move;
						bestMoveScore = moveScore;
					}
				}
				if (bestMove) {
					game.selectUnit(closestUnit);
					game.moveSelectedUnit(bestMove.row, bestMove.col);
					return true;
				}
			}
		}
		// Check if any unit is in danger and try to move it to safety
		var unitsInDanger = units.filter(function (unit) {
			// Check if any player unit could attack this unit in the next turn
			var playerUnits = game.getTeamUnits('blue');
			for (var i = 0; i < playerUnits.length; i++) {
				var playerUnit = playerUnits[i];
				// Calculate if the player unit could potentially attack this AI unit
				var rowDiff = Math.abs(playerUnit.row - unit.row);
				var colDiff = Math.abs(playerUnit.col - unit.col);
				// Check if in potential attack range based on unit type
				var inDanger = false;
				if (playerUnit.type === 'warrior' && rowDiff + colDiff <= playerUnit.moveRange + playerUnit.attackRange) {
					inDanger = true;
				} else if (playerUnit.type === 'archer' && colDiff === 0 && rowDiff <= playerUnit.attackRange + 1) {
					inDanger = true;
				} else if (playerUnit.type === 'knight' && (rowDiff === 0 || colDiff === 0) && rowDiff + colDiff <= playerUnit.attackRange + 1) {
					inDanger = true;
				} else if (playerUnit.type === 'wizard' && rowDiff + colDiff <= playerUnit.moveRange + 2) {
					inDanger = true;
				}
				// If king is in danger, prioritize its safety
				if (inDanger && unit.isKing) {
					return true;
				} else if (inDanger && unit.health < 50) {
					return true;
				}
			}
			return false;
		});
		if (unitsInDanger.length > 0) {
			// Prioritize king safety
			var unitToSave = unitsInDanger.find(function (unit) {
				return unit.isKing;
			}) || unitsInDanger[0];
			var moves = unitToSave.getPossibleMoves(game.grid);
			if (moves.length > 0) {
				// Find safest move (furthest from player units)
				var playerUnits = game.getTeamUnits('blue');
				var bestMove = null;
				var bestSafetyScore = -Infinity;
				for (var i = 0; i < moves.length; i++) {
					var move = moves[i];
					var safetyScore = 0;
					// Calculate safety based on distance from all player units
					for (var j = 0; j < playerUnits.length; j++) {
						var playerUnit = playerUnits[j];
						var dist = Math.abs(move.row - playerUnit.row) + Math.abs(move.col - playerUnit.col);
						safetyScore += dist;
					}
					if (safetyScore > bestSafetyScore) {
						bestSafetyScore = safetyScore;
						bestMove = move;
					}
				}
				if (bestMove) {
					game.selectUnit(unitToSave);
					game.moveSelectedUnit(bestMove.row, bestMove.col);
					return true;
				}
			}
		}
		// Last resort: random move with random unit
		var movableUnits = units.filter(function (unit) {
			return unit.getPossibleMoves(game.grid).length > 0;
		});
		if (movableUnits.length > 0) {
			var randomUnit = movableUnits[Math.floor(Math.random() * movableUnits.length)];
			var possibleMoves = randomUnit.getPossibleMoves(game.grid);
			var randomMove = possibleMoves[Math.floor(Math.random() * possibleMoves.length)];
			game.selectUnit(randomUnit);
			game.moveSelectedUnit(randomMove.row, randomMove.col);
			return true;
		}
		return false; // No move possible
	};
	return self;
});
var CriticalDamageEffect = Container.expand(function () {
	var self = Container.call(this);
	self.init = function (damage, x, y) {
		// Create the critical hit text with animation
		var critText = new Text2('CRITICAL HIT!', {
			size: 80,
			fill: '#FF0000'
		});
		critText.anchor.set(0.5, 0.5);
		self.addChild(critText);
		// Create the damage text
		var damageText = new Text2('-' + damage, {
			size: 100,
			fill: '#FFFF00'
		});
		damageText.anchor.set(0.5, 0.5);
		damageText.y = 80;
		self.addChild(damageText);
		// Position the effect
		self.x = x;
		self.y = y;
		// Initial scale and alpha
		self.scale.set(0.1);
		self.alpha = 0;
		// Animate in
		tween(self, {
			scaleX: 1.2,
			scaleY: 1.2,
			alpha: 1
		}, {
			duration: 300,
			easing: tween.elasticOut
		});
		// Animate out after showing
		LK.setTimeout(function () {
			tween(self, {
				scaleX: 1.5,
				scaleY: 1.5,
				alpha: 0,
				y: self.y - 100
			}, {
				duration: 700,
				easing: tween.easeOutQuad,
				onFinish: function onFinish() {
					self.parent.removeChild(self);
				}
			});
		}, 1200);
		return self;
	};
	return self;
});
var GridCell = Container.expand(function () {
	var self = Container.call(this);
	// Cell properties
	self.row = 0;
	self.col = 0;
	self.occupied = false;
	self.occupiedBy = null;
	self.highlighted = false;
	self.highlightType = null;
	// Create cell graphic
	var cellGraphic = self.attachAsset('grid_cell', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.5
	});
	// Highlighting methods
	self.highlight = function (type) {
		if (self.highlightAsset) {
			self.removeChild(self.highlightAsset);
		}
		self.highlighted = true;
		self.highlightType = type;
		if (type === 'move') {
			self.highlightAsset = self.attachAsset('highlight_move', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.5
			});
		} else if (type === 'attack') {
			self.highlightAsset = self.attachAsset('highlight_attack', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.5
			});
		} else if (type === 'selected') {
			self.highlightAsset = self.attachAsset('highlight_selected', {
				anchorX: 0.5,
				anchorY: 0.5,
				alpha: 0.5
			});
		}
	};
	self.clearHighlight = function () {
		if (self.highlightAsset) {
			self.removeChild(self.highlightAsset);
			self.highlightAsset = null;
		}
		self.highlighted = false;
		self.highlightType = null;
	};
	// Event handlers
	self.down = function (x, y, obj) {
		if (game.gameState === 'playerTurn') {
			game.handleCellClick(self);
		}
	};
	return self;
});
var SettingsScreen = Container.expand(function () {
	var self = Container.call(this);
	// Title
	var titleText = new Text2('SETTINGS', {
		size: 150,
		fill: '#FFFFFF'
	});
	titleText.anchor.set(0.5, 0);
	titleText.y = 100;
	self.addChild(titleText);
	// Create toggle button
	var createToggle = function createToggle(text, yPos, initialState) {
		var container = new Container();
		container.y = yPos;
		// Label
		var label = new Text2(text, {
			size: 80,
			fill: '#FFFFFF'
		});
		label.anchor.set(0, 0.5);
		container.addChild(label);
		// Toggle background
		var toggleBg = LK.getAsset('grid_cell_dark', {
			anchorX: 0.5,
			anchorY: 0.5,
			width: 200,
			height: 100,
			alpha: 0.8
		});
		toggleBg.x = 900;
		container.addChild(toggleBg);
		// Toggle indicator
		var indicator = LK.getAsset('grid_cell', {
			anchorX: 0.5,
			anchorY: 0.5,
			width: 80,
			height: 80
		});
		indicator.x = initialState ? 950 : 850;
		indicator.y = 0;
		container.addChild(indicator);
		// State
		container.state = initialState;
		// Toggle functionality
		toggleBg.down = function (x, y, obj) {
			container.state = !container.state;
			tween(indicator, {
				x: container.state ? 950 : 850
			}, {
				duration: 200,
				easing: tween.easeOutQuad
			});
		};
		return container;
	};
	// Create difficulty slider
	var createSlider = function createSlider(text, yPos, initialValue) {
		var container = new Container();
		container.y = yPos;
		// Label
		var label = new Text2(text, {
			size: 80,
			fill: '#FFFFFF'
		});
		label.anchor.set(0, 0.5);
		container.addChild(label);
		// Slider background
		var sliderBg = LK.getAsset('grid_cell_dark', {
			anchorX: 0,
			anchorY: 0.5,
			width: 500,
			height: 40,
			alpha: 0.8
		});
		sliderBg.x = 650;
		container.addChild(sliderBg);
		// Slider handle
		var handle = LK.getAsset('grid_cell', {
			anchorX: 0.5,
			anchorY: 0.5,
			width: 80,
			height: 80
		});
		handle.x = 650 + initialValue * 500;
		container.addChild(handle);
		// Value display
		var valueText = new Text2(initialValue.toString(), {
			size: 60,
			fill: '#FFFFFF'
		});
		valueText.anchor.set(0, 0.5);
		valueText.x = 1200;
		container.addChild(valueText);
		// State
		container.value = initialValue;
		// Slider functionality
		var isDragging = false;
		handle.down = function (x, y, obj) {
			isDragging = true;
		};
		game.move = function (x, y, obj) {
			if (isDragging) {
				var localPos = sliderBg.toLocal(obj.position);
				var newX = Math.max(0, Math.min(500, localPos.x));
				handle.x = 650 + newX;
				container.value = Math.round(newX / 500 * 10) / 10;
				valueText.setText(container.value.toString());
			}
		};
		game.up = function (x, y, obj) {
			isDragging = false;
		};
		return container;
	};
	// Create settings controls
	var soundToggle = createToggle('Sound Effects', 400, true);
	var musicToggle = createToggle('Music', 550, true);
	var difficultySlider = createSlider('AI Difficulty', 700, 0.5);
	// Add controls to container
	self.addChild(soundToggle);
	self.addChild(musicToggle);
	self.addChild(difficultySlider);
	// Back button
	var backButton = new Container();
	var backBg = LK.getAsset('grid_cell', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8,
		width: 500,
		height: 120
	});
	var backText = new Text2('BACK', {
		size: 80,
		fill: '#000000'
	});
	backText.anchor.set(0.5, 0.5);
	backButton.addChild(backBg);
	backButton.addChild(backText);
	backButton.x = 1024;
	backButton.y = 2500;
	self.addChild(backButton);
	// Back button functionality
	backButton.down = function (x, y, obj) {
		tween(backBg, {
			scaleX: 0.95,
			scaleY: 0.95
		}, {
			duration: 100,
			easing: tween.easeOutQuad
		});
	};
	backButton.up = function (x, y, obj) {
		tween(backBg, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 200,
			easing: tween.elasticOut,
			onFinish: function onFinish() {
				game.showTitleScreen();
			}
		});
	};
	return self;
});
var TitleScreen = Container.expand(function () {
	var self = Container.call(this);
	// Title text
	var titleText = new Text2('CHESS TACTICS', {
		size: 200,
		fill: '#FFFFFF'
	});
	titleText.anchor.set(0.5, 0.5);
	self.addChild(titleText);
	// Create buttons for different game modes
	var createButton = function createButton(text, yOffset) {
		var button = new Container();
		// Button background
		var bg = LK.getAsset('grid_cell', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.8,
			width: 800,
			height: 150
		});
		button.addChild(bg);
		// Button text
		var buttonText = new Text2(text, {
			size: 100,
			fill: '#000000'
		});
		buttonText.anchor.set(0.5, 0.5);
		button.addChild(buttonText);
		// Position button
		button.y = yOffset;
		// Button hover/press effects
		button.down = function (x, y, obj) {
			tween(bg, {
				scaleX: 0.95,
				scaleY: 0.95
			}, {
				duration: 100,
				easing: tween.easeOutQuad
			});
		};
		button.up = function (x, y, obj) {
			tween(bg, {
				scaleX: 1,
				scaleY: 1
			}, {
				duration: 200,
				easing: tween.elasticOut
			});
		};
		return button;
	};
	// Create menu buttons
	var playButton = createButton('PLAY GAME', 100);
	var tutorialButton = createButton('TUTORIAL', 300);
	var settingsButton = createButton('SETTINGS', 500);
	// Add buttons to container
	self.addChild(playButton);
	self.addChild(tutorialButton);
	self.addChild(settingsButton);
	// Button functionality
	playButton.down = function (x, y, obj) {
		tween(playButton.children[0], {
			scaleX: 0.95,
			scaleY: 0.95
		}, {
			duration: 100,
			easing: tween.easeOutQuad
		});
	};
	playButton.up = function (x, y, obj) {
		tween(playButton.children[0], {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 200,
			easing: tween.elasticOut,
			onFinish: function onFinish() {
				game.startGame();
			}
		});
	};
	tutorialButton.down = function (x, y, obj) {
		tween(tutorialButton.children[0], {
			scaleX: 0.95,
			scaleY: 0.95
		}, {
			duration: 100,
			easing: tween.easeOutQuad
		});
	};
	tutorialButton.up = function (x, y, obj) {
		tween(tutorialButton.children[0], {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 200,
			easing: tween.elasticOut,
			onFinish: function onFinish() {
				game.showTutorial();
			}
		});
	};
	settingsButton.down = function (x, y, obj) {
		tween(settingsButton.children[0], {
			scaleX: 0.95,
			scaleY: 0.95
		}, {
			duration: 100,
			easing: tween.easeOutQuad
		});
	};
	settingsButton.up = function (x, y, obj) {
		tween(settingsButton.children[0], {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 200,
			easing: tween.elasticOut,
			onFinish: function onFinish() {
				game.showSettings();
			}
		});
	};
	return self;
});
var TutorialScreen = Container.expand(function () {
	var self = Container.call(this);
	// Title
	var titleText = new Text2('TUTORIAL', {
		size: 150,
		fill: '#FFFFFF'
	});
	titleText.anchor.set(0.5, 0);
	titleText.y = 100;
	self.addChild(titleText);
	// Create unit examples
	var createUnitExample = function createUnitExample(type, team, description, xPos, yPos) {
		var container = new Container();
		container.x = xPos;
		container.y = yPos;
		// Unit graphic
		var unitAsset = LK.getAsset(type + '_' + team, {
			anchorX: 0.5,
			anchorY: 0.5,
			scale: 0.8
		});
		container.addChild(unitAsset);
		// Unit description
		var descText = new Text2(description, {
			size: 60,
			fill: '#FFFFFF',
			wordWrap: true,
			wordWrapWidth: 400
		});
		descText.anchor.set(0.5, 0);
		descText.y = 120;
		container.addChild(descText);
		return container;
	};
	// Create unit examples
	var kingExample = createUnitExample('king', 'blue', 'KING: Protect at all costs. Lose the king and you lose the game!', 400, 300);
	var warriorExample = createUnitExample('warrior', 'blue', 'WARRIOR: Strong frontline unit with instant kill ability', 1600, 300);
	var knightExample = createUnitExample('knight', 'blue', 'KNIGHT: Fast unit that moves in straight lines', 400, 600);
	var wizardExample = createUnitExample('wizard', 'blue', 'WIZARD: Area damage that affects adjacent units', 1600, 600);
	var archerExample = createUnitExample('archer', 'blue', 'ARCHER: Long-range attacker that hits units in a line', 1000, 900);
	// Add unit examples to container
	self.addChild(kingExample);
	self.addChild(warriorExample);
	self.addChild(knightExample);
	self.addChild(wizardExample);
	self.addChild(archerExample);
	// Back button
	var backButton = new Container();
	var backBg = LK.getAsset('grid_cell', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0.8,
		width: 500,
		height: 120
	});
	var backText = new Text2('BACK', {
		size: 80,
		fill: '#000000'
	});
	backText.anchor.set(0.5, 0.5);
	backButton.addChild(backBg);
	backButton.addChild(backText);
	backButton.x = 1024;
	backButton.y = 2500;
	self.addChild(backButton);
	// Back button functionality
	backButton.down = function (x, y, obj) {
		tween(backBg, {
			scaleX: 0.95,
			scaleY: 0.95
		}, {
			duration: 100,
			easing: tween.easeOutQuad
		});
	};
	backButton.up = function (x, y, obj) {
		tween(backBg, {
			scaleX: 1,
			scaleY: 1
		}, {
			duration: 200,
			easing: tween.elasticOut,
			onFinish: function onFinish() {
				game.showTitleScreen();
			}
		});
	};
	return self;
});
var Unit = Container.expand(function () {
	var self = Container.call(this);
	// Unit properties
	self.type = "";
	self.team = "";
	self.row = 0;
	self.col = 0;
	self.isKing = false;
	self.alive = true;
	self.selected = false;
	self.health = 100; // Base health for all units
	self.attackStrength = 20; // Base attack strength for all units
	// Initialize with type and team
	self.init = function (type, team, row, col) {
		self.type = type;
		self.team = team;
		self.row = row;
		self.col = col;
		self.isKing = type === 'king';
		// Set different health and attack values based on unit type
		switch (type) {
			case 'king':
				self.health = 250;
				self.attackStrength = 35;
				self.moveRange = 1; // Can move 1 tile in any direction
				self.attackRange = 1; // Can attack 1 tile forward
				break;
			case 'warrior':
				self.health = 280;
				self.attackStrength = 45;
				self.moveRange = 1; // Can move 1 tile in any direction
				self.attackRange = 1; // Can attack 1 tile forward
				break;
			case 'knight':
				self.health = 150;
				self.attackStrength = 40;
				self.moveRange = 3; // Can move up to 3 tiles horizontally or vertically
				self.attackRange = 2; // Can attack in movement range
				break;
			case 'wizard':
				self.health = 90;
				self.attackStrength = 60;
				self.moveRange = 2; // Can move up to 2 tiles in any direction
				self.attackRange = 3; // Attack 6 tiles ahead and surrounding
				break;
			case 'archer':
				self.health = 100;
				self.attackStrength = 50;
				self.moveRange = 1; // Can move sideways freely, 1 tile forward
				self.attackRange = 4; // Can attack up to 8 tiles ahead
				break;
		}
		var assetId = type + '_' + team;
		self.unitGraphic = self.attachAsset(assetId, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		return self;
	};
	// Movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		// Base movement logic to be overridden by specific unit types
		return false;
	};
	// Attack validation
	self.canAttack = function (targetRow, targetCol) {
		// Base attack logic to be overridden by specific unit types
		return false;
	};
	// Get possible move cells
	self.getPossibleMoves = function (grid) {
		var moves = [];
		for (var r = 0; r < grid.length; r++) {
			for (var c = 0; c < grid[r].length; c++) {
				if (this.canMoveTo(r, c) && !grid[r][c].occupied) {
					moves.push({
						row: r,
						col: c
					});
				}
			}
		}
		return moves;
	};
	// Get possible attack cells
	self.getPossibleAttacks = function (grid) {
		var attacks = [];
		for (var r = 0; r < grid.length; r++) {
			for (var c = 0; c < grid[r].length; c++) {
				if (this.canAttack(r, c) && grid[r][c].occupied && grid[r][c].occupiedBy.team !== this.team) {
					attacks.push({
						row: r,
						col: c
					});
				}
			}
		}
		return attacks;
	};
	// Move unit to new position
	self.moveTo = function (targetRow, targetCol) {
		self.row = targetRow;
		self.col = targetCol;
	};
	// Select unit
	self.select = function () {
		self.selected = true;
		self.unitGraphic.alpha = 1.0;
	};
	// Deselect unit
	self.deselect = function () {
		self.selected = false;
		self.unitGraphic.alpha = 0.8;
	};
	return self;
});
var Wizard = Unit.expand(function () {
	var self = Unit.call(this);
	// Override movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Wizard can move diagonally or in straight lines
		return rowDiff <= 2 && colDiff <= 2;
	};
	// Override attack validation
	self.canAttack = function (targetRow, targetCol) {
		// Wizard can attack up to 3 tiles away in any direction
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Total distance (Manhattan distance) should be less than or equal to attack range
		return rowDiff + colDiff <= self.attackRange && !(rowDiff === 0 && colDiff === 0);
	};
	// Wizards do area damage
	self.isAreaAttacker = true;
	return self;
});
var Warrior = Unit.expand(function () {
	var self = Unit.call(this);
	// Override movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Warrior can only move up to moveRange tile in any direction
		return rowDiff <= self.moveRange && colDiff <= self.moveRange && !(rowDiff === 0 && colDiff === 0);
	};
	// Override attack validation
	self.canAttack = function (targetRow, targetCol) {
		// Instant-kill attack (1 tile forward)
		if (self.team === 'blue') {
			return targetRow === self.row - self.attackRange && targetCol === self.col;
		} else {
			return targetRow === self.row + self.attackRange && targetCol === self.col;
		}
	};
	// Warriors have instant kill ability
	self.hasInstantKill = true;
	return self;
});
var Knight = Unit.expand(function () {
	var self = Unit.call(this);
	// Override movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		// Knight moves straight or sideways (1-3 tiles)
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Can move horizontally or vertically up to moveRange tiles
		return rowDiff === 0 && colDiff > 0 && colDiff <= self.moveRange || colDiff === 0 && rowDiff > 0 && rowDiff <= self.moveRange;
	};
	// Override attack validation
	self.canAttack = function (targetRow, targetCol) {
		// Knight can attack along the same paths as movement
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		return rowDiff === 0 && colDiff > 0 && colDiff <= self.attackRange || colDiff === 0 && rowDiff > 0 && rowDiff <= self.attackRange;
	};
	return self;
});
var King = Unit.expand(function () {
	var self = Unit.call(this);
	// Override movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		// King moves like a chess queen but limited distance
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Can move in any direction but maximum moveRange spaces
		return rowDiff <= self.moveRange && colDiff <= self.moveRange && !(rowDiff === 0 && colDiff === 0);
	};
	// Override attack validation
	self.canAttack = function (targetRow, targetCol) {
		// King only attacks forward based on team direction and attack range
		var forwardRow = self.team === 'blue' ? self.row - self.attackRange : self.row + self.attackRange;
		return targetRow === forwardRow && targetCol === self.col;
	};
	return self;
});
var Archer = Unit.expand(function () {
	var self = Unit.call(this);
	// Override movement validation
	self.canMoveTo = function (targetRow, targetCol) {
		var rowDiff = Math.abs(targetRow - self.row);
		var colDiff = Math.abs(targetCol - self.col);
		// Can move sideways freely, but only moveRange tiles forward
		if (self.team === 'blue') {
			return colDiff > 0 && rowDiff === 0 ||
			// sideways
			targetRow === self.row - self.moveRange && colDiff === 0; // forward
		} else {
			return colDiff > 0 && rowDiff === 0 ||
			// sideways
			targetRow === self.row + self.moveRange && colDiff === 0; // forward
		}
	};
	// Override attack validation
	self.canAttack = function (targetRow, targetCol) {
		// Can attack any enemy in the line attackRange tiles forward
		if (self.team === 'blue') {
			// For blue team, attack any cell in the same column forward (up) within attack range
			return targetCol === self.col && targetRow < self.row && self.row - targetRow <= self.attackRange;
		} else {
			// For red team, attack any cell in the same column forward (down) within attack range
			return targetCol === self.col && targetRow > self.row && targetRow - self.row <= self.attackRange;
		}
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Import tween plugin
// Game constants
// Background image asset
var GRID_ROWS = 10;
var GRID_COLS = 5;
var CELL_SIZE = 250; // Significantly increased cell size
var GRID_PADDING_X = (2048 - GRID_COLS * CELL_SIZE) / 2;
var GRID_PADDING_Y = (2732 - GRID_ROWS * CELL_SIZE) / 2;
// Game variables
var grid = [];
var units = [];
var selectedUnit = null;
var gameState = 'mainMenu'; // mainMenu, tutorial, settings, playerTurn, aiTurn, gameOver
var ai = new AIPlayer();
var statusText = new Text2('Player Turn', {
	size: 120,
	// Significantly increased text size
	fill: 0xFFFFFF
});
// Screen instances
var titleScreen = new TitleScreen();
var tutorialScreen = new TutorialScreen();
var settingsScreen = new SettingsScreen();
// Position screens at center
titleScreen.x = 1024;
titleScreen.y = 1366;
tutorialScreen.x = 1024;
tutorialScreen.y = 1366;
settingsScreen.x = 1024;
settingsScreen.y = 1366;
// Initialize the game board
function initializeGame() {
	// Add background image first so it's behind other elements
	var background = LK.getAsset('background', {
		anchorX: 0,
		anchorY: 0,
		x: 0,
		y: 0,
		width: 2048,
		height: 2732
	});
	game.addChild(background);
	// First show the title screen instead of starting the game directly
	game.showTitleScreen();
	// Add status text (hidden initially, shown during gameplay)
	statusText.anchor.set(0.5, 0);
	statusText.x = 2048 / 2;
	statusText.y = 50;
	statusText.visible = false;
	LK.gui.top.addChild(statusText);
}
// Create all units for both teams
function createUnits() {
	// Blue team (player) - bottom of the board
	// Formation: Knight, Warrior, Warrior, Warrior, Knight (row 8)
	// Formation: Archer, Mage, King, Mage, Archer (row 9)
	createUnit('knight', 'blue', 8, 0);
	createUnit('warrior', 'blue', 8, 1);
	createUnit('warrior', 'blue', 8, 2);
	createUnit('warrior', 'blue', 8, 3);
	createUnit('knight', 'blue', 8, 4);
	createUnit('archer', 'blue', 9, 0);
	createUnit('wizard', 'blue', 9, 1);
	createUnit('king', 'blue', 9, 2);
	createUnit('wizard', 'blue', 9, 3);
	createUnit('archer', 'blue', 9, 4);
	// Red team (AI) - top of the board
	// Formation: Knight, Warrior, Warrior, Warrior, Knight (row 1)
	// Formation: Archer, Mage, King, Mage, Archer (row 0)
	createUnit('knight', 'red', 1, 0);
	createUnit('warrior', 'red', 1, 1);
	createUnit('warrior', 'red', 1, 2);
	createUnit('warrior', 'red', 1, 3);
	createUnit('knight', 'red', 1, 4);
	createUnit('archer', 'red', 0, 0);
	createUnit('wizard', 'red', 0, 1);
	createUnit('king', 'red', 0, 2);
	createUnit('wizard', 'red', 0, 3);
	createUnit('archer', 'red', 0, 4);
}
// Create a single unit
function createUnit(type, team, row, col) {
	var unit;
	// Create the appropriate unit type
	switch (type) {
		case 'king':
			unit = new King().init(type, team, row, col);
			break;
		case 'knight':
			unit = new Knight().init(type, team, row, col);
			break;
		case 'archer':
			unit = new Archer().init(type, team, row, col);
			break;
		case 'wizard':
			unit = new Wizard().init(type, team, row, col);
			break;
		case 'warrior':
			unit = new Warrior().init(type, team, row, col);
			break;
	}
	// Position unit
	unit.x = grid[row][col].x;
	unit.y = grid[row][col].y;
	unit.unitGraphic.alpha = 0.8;
	// Add health display
	unit.healthText = new Text2(unit.health.toString(), {
		size: 50,
		fill: 0xFFD700 // Golden yellow color for better visibility
	});
	unit.healthText.anchor.set(0.5, 0.5);
	unit.healthText.y = unit.unitGraphic.height / 2 + 10;
	unit.addChild(unit.healthText);
	// Add subtle entry animation
	unit.unitGraphic.scale.set(0.1);
	unit.unitGraphic.alpha = 0.3;
	// Add unit to game
	game.addChild(unit);
	units.push(unit);
	// Mark cell as occupied
	grid[row][col].occupied = true;
	grid[row][col].occupiedBy = unit;
	// Add click handler for player units
	if (team === 'blue') {
		unit.down = function (x, y, obj) {
			if (game.gameState === 'playerTurn') {
				selectUnit(unit);
			}
		};
	}
	// Animate unit entry with enhanced effect
	tween(unit.unitGraphic, {
		scaleX: 1.0,
		scaleY: 1.0,
		alpha: 0.8
	}, {
		duration: 600,
		easing: tween.elasticOut,
		delay: 100 * (row + col) % 5 // Staggered appearance for visual interest
	});
	return unit;
}
// Handle cell click
game.handleCellClick = function (cell) {
	if (!selectedUnit || game.gameState !== 'playerTurn') {
		return;
	}
	// If cell is highlighted for movement
	if (cell.highlighted && cell.highlightType === 'move') {
		moveSelectedUnit(cell.row, cell.col);
	}
	// If cell is highlighted for attack
	else if (cell.highlighted && cell.highlightType === 'attack') {
		attackCell(cell);
	}
};
// Select a unit
function selectUnit(unit) {
	// Can only select your own units
	if (unit.team !== 'blue' && gameState === 'playerTurn') {
		return;
	}
	if (unit.team !== 'red' && gameState === 'aiTurn') {
		return;
	}
	// Deselect previous unit if there was one
	if (selectedUnit) {
		selectedUnit.deselect();
		clearAllHighlights();
	}
	// Select new unit
	selectedUnit = unit;
	selectedUnit.select();
	// Enhanced selection animation with glow effect
	tween(selectedUnit.unitGraphic, {
		scaleX: 1.2,
		scaleY: 1.2,
		alpha: 1.0
	}, {
		duration: 200,
		easing: tween.elasticOut,
		onFinish: function onFinish() {
			tween(selectedUnit.unitGraphic, {
				scaleX: 1.0,
				scaleY: 1.0,
				alpha: 0.9
			}, {
				duration: 200,
				easing: tween.easeOutQuad
			});
		}
	});
	// Highlight cell under selected unit
	grid[unit.row][unit.col].highlight('selected');
	// Highlight possible moves with delay for better visual feedback
	var possibleMoves = unit.getPossibleMoves(grid);
	for (var i = 0; i < possibleMoves.length; i++) {
		(function (index) {
			LK.setTimeout(function () {
				if (selectedUnit === unit) {
					// Only highlight if still selected
					var move = possibleMoves[index];
					grid[move.row][move.col].highlight('move');
				}
			}, index * 30);
		})(i);
	}
	// Highlight possible attacks with delay
	var possibleAttacks = unit.getPossibleAttacks(grid);
	for (var i = 0; i < possibleAttacks.length; i++) {
		(function (index) {
			LK.setTimeout(function () {
				if (selectedUnit === unit) {
					// Only highlight if still selected
					var attack = possibleAttacks[index];
					grid[attack.row][attack.col].highlight('attack');
				}
			}, (possibleMoves.length + index) * 30);
		})(i);
	}
}
// Move selected unit to new position
function moveSelectedUnit(targetRow, targetCol) {
	if (!selectedUnit) {
		return;
	}
	// Update grid occupation
	grid[selectedUnit.row][selectedUnit.col].occupied = false;
	grid[selectedUnit.row][selectedUnit.col].occupiedBy = null;
	// Move unit with animation
	selectedUnit.moveTo(targetRow, targetCol);
	// Animate movement with tween
	var targetX = grid[targetRow][targetCol].x;
	var targetY = grid[targetRow][targetCol].y;
	tween(selectedUnit, {
		x: targetX,
		y: targetY
	}, {
		duration: 300,
		easing: tween.easeOutQuad,
		onFinish: function onFinish() {
			// Update grid occupation at new position
			grid[targetRow][targetCol].occupied = true;
			grid[targetRow][targetCol].occupiedBy = selectedUnit;
			// Deselect unit and clear highlights
			selectedUnit.deselect();
			clearAllHighlights();
			selectedUnit = null;
			// Check if any attacks are possible after movement
			checkForAutoAttack();
			// Switch turns
			endTurn();
		}
	});
}
// Attack a cell
function attackCell(cell) {
	if (!selectedUnit || !cell.occupied || cell.occupiedBy.team === selectedUnit.team) {
		return;
	}
	var targetUnit = cell.occupiedBy;
	// Animate the attacker - "lunge" toward target
	var originalX = selectedUnit.x;
	var originalY = selectedUnit.y;
	var directionX = targetUnit.x - selectedUnit.x;
	var directionY = targetUnit.y - selectedUnit.y;
	var distance = Math.sqrt(directionX * directionX + directionY * directionY);
	var normalizedX = directionX / distance * 30; // small lunge
	var normalizedY = directionY / distance * 30;
	// Enhanced attack animation sequence
	tween(selectedUnit, {
		x: selectedUnit.x + normalizedX * 1.5,
		// More pronounced lunge
		y: selectedUnit.y + normalizedY * 1.5
	}, {
		duration: 200,
		easing: tween.easeOutQuad,
		onFinish: function onFinish() {
			// More dramatic visual flash on target
			LK.effects.flashObject(targetUnit, 0xff0000, 400);
			// Return attacker to original position
			tween(selectedUnit, {
				x: originalX,
				y: originalY
			}, {
				duration: 200,
				easing: tween.easeOutQuad,
				onFinish: function onFinish() {
					// Check for critical damage
					var isCritical = isCriticalDamage(selectedUnit.type, targetUnit.type);
					var damageMultiplier = isCritical ? getCriticalDamageMultiplier() : 1.0;
					var actualDamage = Math.floor(selectedUnit.attackStrength * damageMultiplier);
					// Perform attack after animation
					if (selectedUnit.hasInstantKill && !targetUnit.isKing) {
						// Warrior's instant kill works on all enemies except kings
						removeUnit(targetUnit);
					} else if (targetUnit.isKing) {
						// King only dies in one hit if attacked by a warrior
						if (selectedUnit.type === 'warrior') {
							removeUnit(targetUnit);
						} else {
							// Apply normal damage to king
							var isCritical = isCriticalDamage(selectedUnit.type, targetUnit.type);
							var damageMultiplier = isCritical ? getCriticalDamageMultiplier() : 1.0;
							var actualDamage = Math.floor(selectedUnit.attackStrength * damageMultiplier);
							targetUnit.health -= actualDamage;
							targetUnit.healthText.setText(targetUnit.health.toString());
							if (targetUnit.health <= 0) {
								removeUnit(targetUnit);
							}
						}
					} else if (selectedUnit.isAreaAttacker) {
						// Area attack affects target and adjacent units of opposite team
						var adjacentCells = getAdjacentCells(cell.row, cell.col);
						// Apply damage instead of instant kill
						targetUnit.health -= actualDamage;
						targetUnit.healthText.setText(targetUnit.health.toString());
						// Show critical hit effect if applicable
						if (isCritical) {
							var critEffect = new CriticalDamageEffect().init(actualDamage, targetUnit.x, targetUnit.y - 50);
							game.addChild(critEffect);
							// Add stronger visual feedback
							tween(targetUnit, {
								scaleX: 0.8,
								scaleY: 0.8,
								rotation: 0.2
							}, {
								duration: 100,
								easing: tween.easeOutQuad,
								onFinish: function onFinish() {
									tween(targetUnit, {
										scaleX: 1.0,
										scaleY: 1.0,
										rotation: 0
									}, {
										duration: 200,
										easing: tween.elasticOut
									});
								}
							});
						}
						if (targetUnit.health <= 0) {
							removeUnit(targetUnit);
						}
						for (var i = 0; i < adjacentCells.length; i++) {
							var adjCell = adjacentCells[i];
							if (adjCell.occupied && adjCell.occupiedBy.team !== selectedUnit.team) {
								var adjTargetUnit = adjCell.occupiedBy;
								var adjDamage = Math.floor(actualDamage / 2); // Half damage for adjacent units
								adjTargetUnit.health -= adjDamage;
								adjTargetUnit.healthText.setText(adjTargetUnit.health.toString());
								if (adjTargetUnit.health <= 0) {
									removeUnit(adjTargetUnit);
								}
							}
						}
					} else {
						// Normal attack
						targetUnit.health -= actualDamage;
						targetUnit.healthText.setText(targetUnit.health.toString());
						// Show critical hit effect if applicable
						if (isCritical) {
							var critEffect = new CriticalDamageEffect().init(actualDamage, targetUnit.x, targetUnit.y - 50);
							game.addChild(critEffect);
							// Add stronger visual feedback for critical hit
							tween(targetUnit, {
								scaleX: 0.7,
								scaleY: 0.7,
								rotation: 0.3
							}, {
								duration: 100,
								easing: tween.easeOutQuad,
								onFinish: function onFinish() {
									tween(targetUnit, {
										scaleX: 1.0,
										scaleY: 1.0,
										rotation: 0
									}, {
										duration: 300,
										easing: tween.elasticOut
									});
								}
							});
						}
						if (targetUnit.health <= 0) {
							removeUnit(targetUnit);
						}
					}
					// Deselect unit and clear highlights
					selectedUnit.deselect();
					clearAllHighlights();
					selectedUnit = null;
					// Switch turns
					endTurn();
				}
			});
		}
	});
}
// Check if auto-attack is possible (for units that moved next to enemies)
function checkForAutoAttack() {
	// Not implemented in this version - all attacks are chosen by player
}
// Get adjacent cells
function getAdjacentCells(row, col) {
	var adjacent = [];
	var directions = [{
		r: -1,
		c: 0
	}, {
		r: 1,
		c: 0
	}, {
		r: 0,
		c: -1
	}, {
		r: 0,
		c: 1
	}, {
		r: -1,
		c: -1
	}, {
		r: -1,
		c: 1
	}, {
		r: 1,
		c: -1
	}, {
		r: 1,
		c: 1
	}];
	for (var i = 0; i < directions.length; i++) {
		var newRow = row + directions[i].r;
		var newCol = col + directions[i].c;
		if (newRow >= 0 && newRow < GRID_ROWS && newCol >= 0 && newCol < GRID_COLS) {
			adjacent.push(grid[newRow][newCol]);
		}
	}
	return adjacent;
}
// Remove a unit from the game
function removeUnit(unit) {
	// Clear grid cell
	grid[unit.row][unit.col].occupied = false;
	grid[unit.row][unit.col].occupiedBy = null;
	// Remove from units array
	var index = units.indexOf(unit);
	if (index > -1) {
		units.splice(index, 1);
	}
	// Remove from display
	game.removeChild(unit);
	// Check for game over if a king was killed
	if (unit.isKing) {
		if (unit.team === 'blue') {
			endGame('red');
		} else {
			endGame('blue');
		}
	}
}
// Clear all highlights from the grid
function clearAllHighlights() {
	for (var row = 0; row < GRID_ROWS; row++) {
		for (var col = 0; col < GRID_COLS; col++) {
			grid[row][col].clearHighlight();
		}
	}
}
// End the current turn
function endTurn() {
	if (gameState === 'playerTurn') {
		gameState = 'aiTurn';
		statusText.setText('AI Turn');
		// Execute AI turn with delay for better visibility
		LK.setTimeout(function () {
			if (ai.makeMove()) {
				// AI successfully made a move, turn will be ended in the attack/move handlers
			} else {
				// AI couldn't make a move, switch back to player
				gameState = 'playerTurn';
				statusText.setText('Player Turn');
			}
		}, 500); // Small delay for better user experience
	} else if (gameState === 'aiTurn') {
		gameState = 'playerTurn';
		statusText.setText('Player Turn');
	}
}
// End the game with a winner
function endGame(winner) {
	gameState = 'gameOver';
	if (winner === 'blue') {
		statusText.setText('You Win!');
		LK.showYouWin();
	} else {
		statusText.setText('Game Over');
		LK.showGameOver();
	}
}
// Helper functions to determine critical damage relationships
function isCriticalDamage(attackerType, targetType) {
	// Knights are strong against archers
	if (attackerType === 'knight' && targetType === 'archer') {
		return true;
	}
	// Archers are strong against mages/wizards
	if (attackerType === 'archer' && targetType === 'wizard') {
		return true;
	}
	// Mages/wizards are strong against knights
	if (attackerType === 'wizard' && targetType === 'knight') {
		return true;
	}
	return false;
}
// Make isCriticalDamage available to the game object
game.isCriticalDamage = isCriticalDamage;
function getCriticalDamageMultiplier() {
	// Critical damage is 2x normal damage
	return 2.0;
}
// Helper functions
game.getTeamUnits = function (team) {
	return units.filter(function (unit) {
		return unit.team === team;
	});
};
game.getKing = function (team) {
	for (var i = 0; i < units.length; i++) {
		if (units[i].isKing && units[i].team === team) {
			return units[i];
		}
	}
	return null;
};
// Expose functions to game object for access from other classes
game.selectUnit = selectUnit;
game.moveSelectedUnit = moveSelectedUnit;
game.attackCell = attackCell;
game.grid = grid;
game.gameState = gameState;
game.getAdjacentCells = getAdjacentCells;
// Create a getter/setter for game state to ensure consistency
Object.defineProperty(game, 'gameState', {
	get: function get() {
		return gameState;
	},
	set: function set(value) {
		gameState = value;
	}
});
// Screen management functions
game.showTitleScreen = function () {
	// Clear any existing game elements
	game.removeAllGameElements();
	// Show title screen
	game.addChild(titleScreen);
	game.removeChild(tutorialScreen);
	game.removeChild(settingsScreen);
	// Hide status text during main menu
	statusText.visible = false;
	// Set game state
	gameState = 'mainMenu';
};
game.showTutorial = function () {
	// Show tutorial screen
	game.removeChild(titleScreen);
	game.addChild(tutorialScreen);
	game.removeChild(settingsScreen);
	// Set game state
	gameState = 'tutorial';
};
game.showSettings = function () {
	// Show settings screen
	game.removeChild(titleScreen);
	game.removeChild(tutorialScreen);
	game.addChild(settingsScreen);
	// Set game state
	gameState = 'settings';
};
game.startGame = function () {
	// Clear screens
	game.removeChild(titleScreen);
	game.removeChild(tutorialScreen);
	game.removeChild(settingsScreen);
	// Initialize the game grid
	for (var row = 0; row < GRID_ROWS; row++) {
		grid[row] = [];
		for (var col = 0; col < GRID_COLS; col++) {
			var cell = new GridCell();
			cell.row = row;
			cell.col = col;
			cell.x = GRID_PADDING_X + col * CELL_SIZE + CELL_SIZE / 2;
			cell.y = GRID_PADDING_Y + row * CELL_SIZE + CELL_SIZE / 2;
			// Alternate cell colors
			if ((row + col) % 2 === 0) {
				cell.removeChild(cell.children[0]); // Remove default graphic
				cell.attachAsset('grid_cell_dark', {
					anchorX: 0.5,
					anchorY: 0.5,
					alpha: 0.5
				});
			}
			grid[row][col] = cell;
			game.addChild(cell);
		}
	}
	// Create units
	createUnits();
	// Show status text during gameplay
	statusText.visible = true;
	statusText.setText('Player Turn');
	// Set game state
	gameState = 'playerTurn';
};
game.removeAllGameElements = function () {
	// Remove grid cells if they exist
	for (var row = 0; row < grid.length; row++) {
		for (var col = 0; col < grid[row].length; col++) {
			if (grid[row][col]) {
				game.removeChild(grid[row][col]);
			}
		}
	}
	// Remove units
	for (var i = 0; i < units.length; i++) {
		game.removeChild(units[i]);
	}
	// Reset game variables
	grid = [];
	units = [];
	selectedUnit = null;
};
// Initialize game
initializeGame();

===================================================================
--- original.js
+++ change.js
@@ -339,8 +339,387 @@
 		}
 	};
 	return self;
 });
+var SettingsScreen = Container.expand(function () {
+	var self = Container.call(this);
+	// Title
+	var titleText = new Text2('SETTINGS', {
+		size: 150,
+		fill: '#FFFFFF'
+	});
+	titleText.anchor.set(0.5, 0);
+	titleText.y = 100;
+	self.addChild(titleText);
+	// Create toggle button
+	var createToggle = function createToggle(text, yPos, initialState) {
+		var container = new Container();
+		container.y = yPos;
+		// Label
+		var label = new Text2(text, {
+			size: 80,
+			fill: '#FFFFFF'
+		});
+		label.anchor.set(0, 0.5);
+		container.addChild(label);
+		// Toggle background
+		var toggleBg = LK.getAsset('grid_cell_dark', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			width: 200,
+			height: 100,
+			alpha: 0.8
+		});
+		toggleBg.x = 900;
+		container.addChild(toggleBg);
+		// Toggle indicator
+		var indicator = LK.getAsset('grid_cell', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			width: 80,
+			height: 80
+		});
+		indicator.x = initialState ? 950 : 850;
+		indicator.y = 0;
+		container.addChild(indicator);
+		// State
+		container.state = initialState;
+		// Toggle functionality
+		toggleBg.down = function (x, y, obj) {
+			container.state = !container.state;
+			tween(indicator, {
+				x: container.state ? 950 : 850
+			}, {
+				duration: 200,
+				easing: tween.easeOutQuad
+			});
+		};
+		return container;
+	};
+	// Create difficulty slider
+	var createSlider = function createSlider(text, yPos, initialValue) {
+		var container = new Container();
+		container.y = yPos;
+		// Label
+		var label = new Text2(text, {
+			size: 80,
+			fill: '#FFFFFF'
+		});
+		label.anchor.set(0, 0.5);
+		container.addChild(label);
+		// Slider background
+		var sliderBg = LK.getAsset('grid_cell_dark', {
+			anchorX: 0,
+			anchorY: 0.5,
+			width: 500,
+			height: 40,
+			alpha: 0.8
+		});
+		sliderBg.x = 650;
+		container.addChild(sliderBg);
+		// Slider handle
+		var handle = LK.getAsset('grid_cell', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			width: 80,
+			height: 80
+		});
+		handle.x = 650 + initialValue * 500;
+		container.addChild(handle);
+		// Value display
+		var valueText = new Text2(initialValue.toString(), {
+			size: 60,
+			fill: '#FFFFFF'
+		});
+		valueText.anchor.set(0, 0.5);
+		valueText.x = 1200;
+		container.addChild(valueText);
+		// State
+		container.value = initialValue;
+		// Slider functionality
+		var isDragging = false;
+		handle.down = function (x, y, obj) {
+			isDragging = true;
+		};
+		game.move = function (x, y, obj) {
+			if (isDragging) {
+				var localPos = sliderBg.toLocal(obj.position);
+				var newX = Math.max(0, Math.min(500, localPos.x));
+				handle.x = 650 + newX;
+				container.value = Math.round(newX / 500 * 10) / 10;
+				valueText.setText(container.value.toString());
+			}
+		};
+		game.up = function (x, y, obj) {
+			isDragging = false;
+		};
+		return container;
+	};
+	// Create settings controls
+	var soundToggle = createToggle('Sound Effects', 400, true);
+	var musicToggle = createToggle('Music', 550, true);
+	var difficultySlider = createSlider('AI Difficulty', 700, 0.5);
+	// Add controls to container
+	self.addChild(soundToggle);
+	self.addChild(musicToggle);
+	self.addChild(difficultySlider);
+	// Back button
+	var backButton = new Container();
+	var backBg = LK.getAsset('grid_cell', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0.8,
+		width: 500,
+		height: 120
+	});
+	var backText = new Text2('BACK', {
+		size: 80,
+		fill: '#000000'
+	});
+	backText.anchor.set(0.5, 0.5);
+	backButton.addChild(backBg);
+	backButton.addChild(backText);
+	backButton.x = 1024;
+	backButton.y = 2500;
+	self.addChild(backButton);
+	// Back button functionality
+	backButton.down = function (x, y, obj) {
+		tween(backBg, {
+			scaleX: 0.95,
+			scaleY: 0.95
+		}, {
+			duration: 100,
+			easing: tween.easeOutQuad
+		});
+	};
+	backButton.up = function (x, y, obj) {
+		tween(backBg, {
+			scaleX: 1,
+			scaleY: 1
+		}, {
+			duration: 200,
+			easing: tween.elasticOut,
+			onFinish: function onFinish() {
+				game.showTitleScreen();
+			}
+		});
+	};
+	return self;
+});
+var TitleScreen = Container.expand(function () {
+	var self = Container.call(this);
+	// Title text
+	var titleText = new Text2('CHESS TACTICS', {
+		size: 200,
+		fill: '#FFFFFF'
+	});
+	titleText.anchor.set(0.5, 0.5);
+	self.addChild(titleText);
+	// Create buttons for different game modes
+	var createButton = function createButton(text, yOffset) {
+		var button = new Container();
+		// Button background
+		var bg = LK.getAsset('grid_cell', {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			alpha: 0.8,
+			width: 800,
+			height: 150
+		});
+		button.addChild(bg);
+		// Button text
+		var buttonText = new Text2(text, {
+			size: 100,
+			fill: '#000000'
+		});
+		buttonText.anchor.set(0.5, 0.5);
+		button.addChild(buttonText);
+		// Position button
+		button.y = yOffset;
+		// Button hover/press effects
+		button.down = function (x, y, obj) {
+			tween(bg, {
+				scaleX: 0.95,
+				scaleY: 0.95
+			}, {
+				duration: 100,
+				easing: tween.easeOutQuad
+			});
+		};
+		button.up = function (x, y, obj) {
+			tween(bg, {
+				scaleX: 1,
+				scaleY: 1
+			}, {
+				duration: 200,
+				easing: tween.elasticOut
+			});
+		};
+		return button;
+	};
+	// Create menu buttons
+	var playButton = createButton('PLAY GAME', 100);
+	var tutorialButton = createButton('TUTORIAL', 300);
+	var settingsButton = createButton('SETTINGS', 500);
+	// Add buttons to container
+	self.addChild(playButton);
+	self.addChild(tutorialButton);
+	self.addChild(settingsButton);
+	// Button functionality
+	playButton.down = function (x, y, obj) {
+		tween(playButton.children[0], {
+			scaleX: 0.95,
+			scaleY: 0.95
+		}, {
+			duration: 100,
+			easing: tween.easeOutQuad
+		});
+	};
+	playButton.up = function (x, y, obj) {
+		tween(playButton.children[0], {
+			scaleX: 1,
+			scaleY: 1
+		}, {
+			duration: 200,
+			easing: tween.elasticOut,
+			onFinish: function onFinish() {
+				game.startGame();
+			}
+		});
+	};
+	tutorialButton.down = function (x, y, obj) {
+		tween(tutorialButton.children[0], {
+			scaleX: 0.95,
+			scaleY: 0.95
+		}, {
+			duration: 100,
+			easing: tween.easeOutQuad
+		});
+	};
+	tutorialButton.up = function (x, y, obj) {
+		tween(tutorialButton.children[0], {
+			scaleX: 1,
+			scaleY: 1
+		}, {
+			duration: 200,
+			easing: tween.elasticOut,
+			onFinish: function onFinish() {
+				game.showTutorial();
+			}
+		});
+	};
+	settingsButton.down = function (x, y, obj) {
+		tween(settingsButton.children[0], {
+			scaleX: 0.95,
+			scaleY: 0.95
+		}, {
+			duration: 100,
+			easing: tween.easeOutQuad
+		});
+	};
+	settingsButton.up = function (x, y, obj) {
+		tween(settingsButton.children[0], {
+			scaleX: 1,
+			scaleY: 1
+		}, {
+			duration: 200,
+			easing: tween.elasticOut,
+			onFinish: function onFinish() {
+				game.showSettings();
+			}
+		});
+	};
+	return self;
+});
+var TutorialScreen = Container.expand(function () {
+	var self = Container.call(this);
+	// Title
+	var titleText = new Text2('TUTORIAL', {
+		size: 150,
+		fill: '#FFFFFF'
+	});
+	titleText.anchor.set(0.5, 0);
+	titleText.y = 100;
+	self.addChild(titleText);
+	// Create unit examples
+	var createUnitExample = function createUnitExample(type, team, description, xPos, yPos) {
+		var container = new Container();
+		container.x = xPos;
+		container.y = yPos;
+		// Unit graphic
+		var unitAsset = LK.getAsset(type + '_' + team, {
+			anchorX: 0.5,
+			anchorY: 0.5,
+			scale: 0.8
+		});
+		container.addChild(unitAsset);
+		// Unit description
+		var descText = new Text2(description, {
+			size: 60,
+			fill: '#FFFFFF',
+			wordWrap: true,
+			wordWrapWidth: 400
+		});
+		descText.anchor.set(0.5, 0);
+		descText.y = 120;
+		container.addChild(descText);
+		return container;
+	};
+	// Create unit examples
+	var kingExample = createUnitExample('king', 'blue', 'KING: Protect at all costs. Lose the king and you lose the game!', 400, 300);
+	var warriorExample = createUnitExample('warrior', 'blue', 'WARRIOR: Strong frontline unit with instant kill ability', 1600, 300);
+	var knightExample = createUnitExample('knight', 'blue', 'KNIGHT: Fast unit that moves in straight lines', 400, 600);
+	var wizardExample = createUnitExample('wizard', 'blue', 'WIZARD: Area damage that affects adjacent units', 1600, 600);
+	var archerExample = createUnitExample('archer', 'blue', 'ARCHER: Long-range attacker that hits units in a line', 1000, 900);
+	// Add unit examples to container
+	self.addChild(kingExample);
+	self.addChild(warriorExample);
+	self.addChild(knightExample);
+	self.addChild(wizardExample);
+	self.addChild(archerExample);
+	// Back button
+	var backButton = new Container();
+	var backBg = LK.getAsset('grid_cell', {
+		anchorX: 0.5,
+		anchorY: 0.5,
+		alpha: 0.8,
+		width: 500,
+		height: 120
+	});
+	var backText = new Text2('BACK', {
+		size: 80,
+		fill: '#000000'
+	});
+	backText.anchor.set(0.5, 0.5);
+	backButton.addChild(backBg);
+	backButton.addChild(backText);
+	backButton.x = 1024;
+	backButton.y = 2500;
+	self.addChild(backButton);
+	// Back button functionality
+	backButton.down = function (x, y, obj) {
+		tween(backBg, {
+			scaleX: 0.95,
+			scaleY: 0.95
+		}, {
+			duration: 100,
+			easing: tween.easeOutQuad
+		});
+	};
+	backButton.up = function (x, y, obj) {
+		tween(backBg, {
+			scaleX: 1,
+			scaleY: 1
+		}, {
+			duration: 200,
+			easing: tween.elasticOut,
+			onFinish: function onFinish() {
+				game.showTitleScreen();
+			}
+		});
+	};
+	return self;
+});
 var Unit = Container.expand(function () {
 	var self = Container.call(this);
 	// Unit properties
 	self.type = "";
@@ -576,11 +955,11 @@
 
 /**** 
 * Game Code
 ****/ 
-// Background image asset
-// Game constants
 // Import tween plugin
+// Game constants
+// Background image asset
 var GRID_ROWS = 10;
 var GRID_COLS = 5;
 var CELL_SIZE = 250; // Significantly increased cell size
 var GRID_PADDING_X = (2048 - GRID_COLS * CELL_SIZE) / 2;
@@ -588,15 +967,26 @@
 // Game variables
 var grid = [];
 var units = [];
 var selectedUnit = null;
-var gameState = 'playerTurn'; // playerTurn, aiTurn, gameOver
+var gameState = 'mainMenu'; // mainMenu, tutorial, settings, playerTurn, aiTurn, gameOver
 var ai = new AIPlayer();
 var statusText = new Text2('Player Turn', {
 	size: 120,
 	// Significantly increased text size
 	fill: 0xFFFFFF
 });
+// Screen instances
+var titleScreen = new TitleScreen();
+var tutorialScreen = new TutorialScreen();
+var settingsScreen = new SettingsScreen();
+// Position screens at center
+titleScreen.x = 1024;
+titleScreen.y = 1366;
+tutorialScreen.x = 1024;
+tutorialScreen.y = 1366;
+settingsScreen.x = 1024;
+settingsScreen.y = 1366;
 // Initialize the game board
 function initializeGame() {
 	// Add background image first so it's behind other elements
 	var background = LK.getAsset('background', {
@@ -607,36 +997,15 @@
 		width: 2048,
 		height: 2732
 	});
 	game.addChild(background);
-	// Create grid
-	for (var row = 0; row < GRID_ROWS; row++) {
-		grid[row] = [];
-		for (var col = 0; col < GRID_COLS; col++) {
-			var cell = new GridCell();
-			cell.row = row;
-			cell.col = col;
-			cell.x = GRID_PADDING_X + col * CELL_SIZE + CELL_SIZE / 2;
-			cell.y = GRID_PADDING_Y + row * CELL_SIZE + CELL_SIZE / 2;
-			// Alternate cell colors
-			if ((row + col) % 2 === 0) {
-				cell.removeChild(cell.children[0]); // Remove default graphic
-				cell.attachAsset('grid_cell_dark', {
-					anchorX: 0.5,
-					anchorY: 0.5,
-					alpha: 0.5
-				});
-			}
-			grid[row][col] = cell;
-			game.addChild(cell);
-		}
-	}
-	// Create units for both teams
-	createUnits();
-	// Add status text
+	// First show the title screen instead of starting the game directly
+	game.showTitleScreen();
+	// Add status text (hidden initially, shown during gameplay)
 	statusText.anchor.set(0.5, 0);
 	statusText.x = 2048 / 2;
 	statusText.y = 50;
+	statusText.visible = false;
 	LK.gui.top.addChild(statusText);
 }
 // Create all units for both teams
 function createUnits() {
@@ -1138,6 +1507,88 @@
 	set: function set(value) {
 		gameState = value;
 	}
 });
+// Screen management functions
+game.showTitleScreen = function () {
+	// Clear any existing game elements
+	game.removeAllGameElements();
+	// Show title screen
+	game.addChild(titleScreen);
+	game.removeChild(tutorialScreen);
+	game.removeChild(settingsScreen);
+	// Hide status text during main menu
+	statusText.visible = false;
+	// Set game state
+	gameState = 'mainMenu';
+};
+game.showTutorial = function () {
+	// Show tutorial screen
+	game.removeChild(titleScreen);
+	game.addChild(tutorialScreen);
+	game.removeChild(settingsScreen);
+	// Set game state
+	gameState = 'tutorial';
+};
+game.showSettings = function () {
+	// Show settings screen
+	game.removeChild(titleScreen);
+	game.removeChild(tutorialScreen);
+	game.addChild(settingsScreen);
+	// Set game state
+	gameState = 'settings';
+};
+game.startGame = function () {
+	// Clear screens
+	game.removeChild(titleScreen);
+	game.removeChild(tutorialScreen);
+	game.removeChild(settingsScreen);
+	// Initialize the game grid
+	for (var row = 0; row < GRID_ROWS; row++) {
+		grid[row] = [];
+		for (var col = 0; col < GRID_COLS; col++) {
+			var cell = new GridCell();
+			cell.row = row;
+			cell.col = col;
+			cell.x = GRID_PADDING_X + col * CELL_SIZE + CELL_SIZE / 2;
+			cell.y = GRID_PADDING_Y + row * CELL_SIZE + CELL_SIZE / 2;
+			// Alternate cell colors
+			if ((row + col) % 2 === 0) {
+				cell.removeChild(cell.children[0]); // Remove default graphic
+				cell.attachAsset('grid_cell_dark', {
+					anchorX: 0.5,
+					anchorY: 0.5,
+					alpha: 0.5
+				});
+			}
+			grid[row][col] = cell;
+			game.addChild(cell);
+		}
+	}
+	// Create units
+	createUnits();
+	// Show status text during gameplay
+	statusText.visible = true;
+	statusText.setText('Player Turn');
+	// Set game state
+	gameState = 'playerTurn';
+};
+game.removeAllGameElements = function () {
+	// Remove grid cells if they exist
+	for (var row = 0; row < grid.length; row++) {
+		for (var col = 0; col < grid[row].length; col++) {
+			if (grid[row][col]) {
+				game.removeChild(grid[row][col]);
+			}
+		}
+	}
+	// Remove units
+	for (var i = 0; i < units.length; i++) {
+		game.removeChild(units[i]);
+	}
+	// Reset game variables
+	grid = [];
+	units = [];
+	selectedUnit = null;
+};
 // Initialize game
 initializeGame();
\ No newline at end of file