/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	money: 0,
	strongBombUnlocked: false
});

/**** 
* Classes
****/ 
var Candy = Container.expand(function (colorType) {
	var self = Container.call(this);
	self.colorType = colorType;
	self.isSelected = false;
	self.isExploding = false;
	var candyAssets = ['candy_red', 'candy_blue', 'candy_green', 'candy_yellow', 'candy_purple', 'candy_orange', 'candy_bomb', 'candy_money'];
	var candyGraphics = self.attachAsset(candyAssets[colorType], {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setSelected = function (selected) {
		self.isSelected = selected;
		if (selected) {
			candyGraphics.scaleX = 1.2;
			candyGraphics.scaleY = 1.2;
		} else {
			candyGraphics.scaleX = 1.0;
			candyGraphics.scaleY = 1.0;
		}
	};
	self.explode = function () {
		self.isExploding = true;
		// Cut effect: rotate and scale down with fade
		tween(candyGraphics, {
			rotation: Math.PI * 2,
			scaleX: 0.1,
			scaleY: 0.1,
			alpha: 0
		}, {
			duration: 300,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.destroy();
			}
		});
	};
	return self;
});
var Grid = Container.expand(function () {
	var self = Container.call(this);
	self.gridWidth = 8;
	self.gridHeight = 12;
	self.cellSize = 130;
	self.candies = [];
	self.selectedGroup = [];
	self.isAnimating = false;
	// Initialize grid array
	for (var i = 0; i < self.gridHeight; i++) {
		self.candies[i] = [];
		for (var j = 0; j < self.gridWidth; j++) {
			self.candies[i][j] = null;
		}
	}
	self.getGridPosition = function (x, y) {
		var startX = (2048 - self.gridWidth * self.cellSize) / 2;
		var startY = 300;
		var col = Math.floor((x - startX) / self.cellSize);
		var row = Math.floor((y - startY) / self.cellSize);
		return {
			row: row,
			col: col
		};
	};
	self.getWorldPosition = function (row, col) {
		var startX = (2048 - self.gridWidth * self.cellSize) / 2;
		var startY = 300;
		return {
			x: startX + col * self.cellSize + self.cellSize / 2,
			y: startY + row * self.cellSize + self.cellSize / 2
		};
	};
	self.createCandy = function (row, col) {
		var colorType;
		// 5% chance for money candy
		if (Math.random() < 0.05) {
			colorType = 7; // Money candy
		} else {
			colorType = Math.floor(Math.random() * 6);
		}
		var candy = new Candy(colorType);
		var pos = self.getWorldPosition(row, col);
		candy.x = pos.x;
		candy.y = pos.y;
		self.candies[row][col] = candy;
		self.addChild(candy);
		return candy;
	};
	self.fillGrid = function () {
		for (var i = 0; i < self.gridHeight; i++) {
			for (var j = 0; j < self.gridWidth; j++) {
				if (!self.candies[i][j]) {
					self.createCandy(i, j);
				}
			}
		}
	};
	self.findConnectedGroup = function (row, col, colorType, visited) {
		if (row < 0 || row >= self.gridHeight || col < 0 || col >= self.gridWidth) {
			return [];
		}
		if (visited[row][col] || !self.candies[row][col] || self.candies[row][col].colorType !== colorType) {
			return [];
		}
		visited[row][col] = true;
		var group = [{
			row: row,
			col: col,
			candy: self.candies[row][col]
		}];
		// Check adjacent cells (up, down, left, right)
		var directions = [[-1, 0], [1, 0], [0, -1], [0, 1]];
		for (var d = 0; d < directions.length; d++) {
			var newRow = row + directions[d][0];
			var newCol = col + directions[d][1];
			var connected = self.findConnectedGroup(newRow, newCol, colorType, visited);
			group = group.concat(connected);
		}
		return group;
	};
	self.selectGroup = function (row, col) {
		if (self.isAnimating || !self.candies[row][col]) return;
		// Clear previous selection
		self.clearSelection();
		var visited = [];
		for (var i = 0; i < self.gridHeight; i++) {
			visited[i] = [];
			for (var j = 0; j < self.gridWidth; j++) {
				visited[i][j] = false;
			}
		}
		var colorType = self.candies[row][col].colorType;
		self.selectedGroup = self.findConnectedGroup(row, col, colorType, visited);
		if (self.selectedGroup.length >= 3) {
			for (var i = 0; i < self.selectedGroup.length; i++) {
				self.selectedGroup[i].candy.setSelected(true);
			}
			return true;
		} else {
			self.selectedGroup = [];
			return false;
		}
	};
	self.clearSelection = function () {
		for (var i = 0; i < self.selectedGroup.length; i++) {
			if (self.selectedGroup[i].candy && !self.selectedGroup[i].candy.isExploding) {
				self.selectedGroup[i].candy.setSelected(false);
			}
		}
		self.selectedGroup = [];
	};
	self.explodeBomb = function (row, col) {
		if (!self.candies[row][col] || self.candies[row][col].colorType !== 6) return 0;
		self.isAnimating = true;
		var points = 0;
		var bombsToExplode = [];
		// Explode 3x3 area around bomb
		for (var i = -1; i <= 1; i++) {
			for (var j = -1; j <= 1; j++) {
				var newRow = row + i;
				var newCol = col + j;
				if (newRow >= 0 && newRow < self.gridHeight && newCol >= 0 && newCol < self.gridWidth) {
					if (self.candies[newRow][newCol]) {
						bombsToExplode.push({
							row: newRow,
							col: newCol,
							candy: self.candies[newRow][newCol]
						});
						points += 10;
					}
				}
			}
		}
		// Add explosion flash effect to bomb area
		for (var i = 0; i < bombsToExplode.length; i++) {
			var item = bombsToExplode[i];
			// Flash effect before exploding
			tween(item.candy, {
				tint: 0xFF0000,
				scaleX: 1.3,
				scaleY: 1.3
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(item.candy, {
						tint: 0xFFFFFF,
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 100,
						easing: tween.easeIn
					});
				}
			});
		}
		// Explode all candies in the bomb area
		LK.setTimeout(function () {
			for (var i = 0; i < bombsToExplode.length; i++) {
				var item = bombsToExplode[i];
				self.candies[item.row][item.col] = null;
				item.candy.explode();
			}
		}, 250);
		LK.getSound('explode').play();
		// Apply gravity and spawn new candies after explosion animation
		LK.setTimeout(function () {
			self.applyGravity();
		}, 600);
		return points;
	};
	self.explodeStrongBomb = function (row, col) {
		self.isAnimating = true;
		var points = 0;
		var bombsToExplode = [];
		// Explode 5x5 area around selected position
		for (var i = -2; i <= 2; i++) {
			for (var j = -2; j <= 2; j++) {
				var newRow = row + i;
				var newCol = col + j;
				if (newRow >= 0 && newRow < self.gridHeight && newCol >= 0 && newCol < self.gridWidth) {
					if (self.candies[newRow][newCol]) {
						bombsToExplode.push({
							row: newRow,
							col: newCol,
							candy: self.candies[newRow][newCol]
						});
						points += 15;
					}
				}
			}
		}
		// Explode all candies in the bomb area
		for (var i = 0; i < bombsToExplode.length; i++) {
			var item = bombsToExplode[i];
			self.candies[item.row][item.col] = null;
			item.candy.explode();
		}
		LK.getSound('explode').play();
		// Apply gravity and spawn new candies after explosion animation
		LK.setTimeout(function () {
			self.applyGravity();
		}, 350);
		return points;
	};
	self.explodeSelectedGroup = function () {
		if (self.selectedGroup.length < 3) return 0;
		self.isAnimating = true;
		var points = self.selectedGroup.length * 10;
		var shouldCreateBomb = false;
		// Bonus points for larger groups
		if (self.selectedGroup.length >= 5) {
			points += 50;
		}
		if (self.selectedGroup.length >= 4) {
			shouldCreateBomb = true;
		}
		if (self.selectedGroup.length >= 7) {
			points += 100;
		}
		// Apply combo multiplier
		points = Math.floor(points * comboMultiplier);
		// Increment combo count
		comboCount++;
		comboMultiplier = 1 + (comboCount - 1) * 0.5; // 1x, 1.5x, 2x, 2.5x, etc.
		comboTimer = comboTimeout;
		// Update combo display
		if (comboCount > 1) {
			comboTxt.setText('COMBO x' + comboCount + '!');
			comboTxt.fill = comboCount >= 5 ? 0xFF0000 : 0xFFD700;
			// Flash combo text
			tween(comboTxt, {
				scaleX: 1.3,
				scaleY: 1.3
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(comboTxt, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 200,
						easing: tween.easeIn
					});
				}
			});
		}
		// Clear candy references from grid first
		for (var i = 0; i < self.selectedGroup.length; i++) {
			var item = self.selectedGroup[i];
			self.candies[item.row][item.col] = null;
		}
		// Sound will be played when knife touches candies
		// Create and animate knife to cut candies
		var knife = new Knife();
		self.addChild(knife);
		knife.cutCandies(self.selectedGroup, function () {
			// Remove knife after cutting
			knife.destroy();
			// Create sugar bomb if 4 or more sugar candies exploded
			var sugarCount = 0;
			for (var i = 0; i < self.selectedGroup.length; i++) {
				if (self.selectedGroup[i].candy.colorType === 3) {
					// Yellow candy (sugar)
					sugarCount++;
				}
			}
			if (sugarCount >= 4) {
				var bombRow = self.selectedGroup[0].row;
				var bombCol = self.selectedGroup[0].col;
				LK.setTimeout(function () {
					var sugarBomb = new Candy(3); // Using candy_yellow asset (index 3 in candyAssets array) for sugar bomb
					var pos = self.getWorldPosition(bombRow, bombCol);
					sugarBomb.x = pos.x;
					sugarBomb.y = pos.y;
					self.candies[bombRow][bombCol] = sugarBomb;
					self.addChild(sugarBomb);
					// Add visual effect to indicate it's a sugar bomb
					tween(sugarBomb, {
						scaleX: 1.3,
						scaleY: 1.3
					}, {
						duration: 300,
						easing: tween.easeOut,
						onFinish: function onFinish() {
							tween(sugarBomb, {
								scaleX: 1.0,
								scaleY: 1.0
							}, {
								duration: 300,
								easing: tween.easeIn
							});
						}
					});
				}, 100);
			}
			// Apply gravity and spawn new candies after cutting animation
			LK.setTimeout(function () {
				self.applyGravity();
			}, 350);
		});
		self.selectedGroup = [];
		return points;
	};
	self.applyGravity = function () {
		var moved = false;
		// Move candies down
		for (var col = 0; col < self.gridWidth; col++) {
			for (var row = self.gridHeight - 1; row >= 0; row--) {
				if (!self.candies[row][col]) {
					// Find candy above to move down
					for (var searchRow = row - 1; searchRow >= 0; searchRow--) {
						if (self.candies[searchRow][col]) {
							self.candies[row][col] = self.candies[searchRow][col];
							self.candies[searchRow][col] = null;
							var newPos = self.getWorldPosition(row, col);
							tween(self.candies[row][col], {
								x: newPos.x,
								y: newPos.y
							}, {
								duration: 200,
								easing: tween.easeIn
							});
							moved = true;
							break;
						}
					}
				}
			}
		}
		// Fill empty spaces at top
		for (var col = 0; col < self.gridWidth; col++) {
			for (var row = 0; row < self.gridHeight; row++) {
				if (!self.candies[row][col]) {
					var candy = self.createCandy(row, col);
					// Start candy above screen and animate down
					candy.y = self.getWorldPosition(row, col).y - 500;
					var targetPos = self.getWorldPosition(row, col);
					tween(candy, {
						y: targetPos.y
					}, {
						duration: 300,
						easing: tween.easeOut
					});
				}
			}
		}
		if (moved) {
			LK.getSound('cascade').play();
		}
		// Check for chain reactions
		LK.setTimeout(function () {
			self.checkChainReactions();
		}, 400);
	};
	self.checkChainReactions = function () {
		// Simply finish the animation process without auto-exploding
		self.isAnimating = false;
		// Reset combo if no more valid moves after timeout
		LK.setTimeout(function () {
			if (comboTimer > 0) {
				comboTimer = 0;
				comboCount = 0;
				comboMultiplier = 1;
				comboTxt.setText('');
			}
		}, 100);
		self.checkGameOver();
	};
	self.checkGameOver = function () {
		var visited = [];
		for (var i = 0; i < self.gridHeight; i++) {
			visited[i] = [];
			for (var j = 0; j < self.gridWidth; j++) {
				visited[i][j] = false;
			}
		}
		for (var row = 0; row < self.gridHeight; row++) {
			for (var col = 0; col < self.gridWidth; col++) {
				if (!visited[row][col] && self.candies[row][col]) {
					var group = self.findConnectedGroup(row, col, self.candies[row][col].colorType, visited);
					if (group.length >= 3) {
						return; // Game can continue
					}
				}
			}
		}
		// No valid moves left
		LK.setTimeout(function () {
			LK.showGameOver();
		}, 1000);
	};
	self.explodeAreaBomb = function (row, col) {
		self.isAnimating = true;
		var points = 0;
		var bombsToExplode = [];
		// Explode 3x3 area around selected position
		for (var i = -1; i <= 1; i++) {
			for (var j = -1; j <= 1; j++) {
				var newRow = row + i;
				var newCol = col + j;
				if (newRow >= 0 && newRow < self.gridHeight && newCol >= 0 && newCol < self.gridWidth) {
					if (self.candies[newRow][newCol]) {
						bombsToExplode.push({
							row: newRow,
							col: newCol,
							candy: self.candies[newRow][newCol]
						});
						points += 10;
					}
				}
			}
		}
		// Add explosion flash effect to bomb area
		for (var i = 0; i < bombsToExplode.length; i++) {
			var item = bombsToExplode[i];
			// Flash effect before exploding
			tween(item.candy, {
				tint: 0xFF0000,
				scaleX: 1.3,
				scaleY: 1.3
			}, {
				duration: 150,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(item.candy, {
						tint: 0xFFFFFF,
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 100,
						easing: tween.easeIn
					});
				}
			});
		}
		// Explode all candies in the bomb area
		LK.setTimeout(function () {
			for (var i = 0; i < bombsToExplode.length; i++) {
				var item = bombsToExplode[i];
				self.candies[item.row][item.col] = null;
				item.candy.explode();
			}
		}, 250);
		LK.getSound('explode').play();
		// Apply gravity and spawn new candies after explosion animation
		LK.setTimeout(function () {
			self.applyGravity();
		}, 600);
		return points;
	};
	self.explodeFirework = function (row, col) {
		self.isAnimating = true;
		var points = 0;
		var bombsToExplode = [];
		// Explode entire row
		for (var j = 0; j < self.gridWidth; j++) {
			if (self.candies[row][j]) {
				bombsToExplode.push({
					row: row,
					col: j,
					candy: self.candies[row][j]
				});
				points += 12;
			}
		}
		// Explode entire column
		for (var i = 0; i < self.gridHeight; i++) {
			if (i !== row && self.candies[i][col]) {
				bombsToExplode.push({
					row: i,
					col: col,
					candy: self.candies[i][col]
				});
				points += 12;
			}
		}
		// Add firework flash effect with colorful animation
		for (var i = 0; i < bombsToExplode.length; i++) {
			var item = bombsToExplode[i];
			// Colorful flash effect before exploding
			tween(item.candy, {
				tint: 0xFFD700,
				scaleX: 1.4,
				scaleY: 1.4
			}, {
				duration: 200,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					tween(item.candy, {
						tint: 0xFF69B4,
						scaleX: 1.2,
						scaleY: 1.2
					}, {
						duration: 150,
						easing: tween.easeIn,
						onFinish: function onFinish() {
							tween(item.candy, {
								tint: 0x00FFFF,
								scaleX: 1.0,
								scaleY: 1.0
							}, {
								duration: 100,
								easing: tween.easeIn
							});
						}
					});
				}
			});
		}
		// Explode all candies in the firework pattern
		LK.setTimeout(function () {
			for (var i = 0; i < bombsToExplode.length; i++) {
				var item = bombsToExplode[i];
				self.candies[item.row][item.col] = null;
				item.candy.explode();
			}
		}, 450);
		LK.getSound('explode').play();
		// Apply gravity and spawn new candies after explosion animation
		LK.setTimeout(function () {
			self.applyGravity();
		}, 800);
		return points;
	};
	return self;
});
var Knife = Container.expand(function () {
	var self = Container.call(this);
	var knifeGraphics = self.attachAsset('knife', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.cutCandies = function (targetCandies, onComplete) {
		if (targetCandies.length === 0) {
			if (onComplete) onComplete();
			return;
		}
		// Position knife at start position (off screen left)
		self.x = -200;
		self.y = targetCandies[0].candy.y;
		self.alpha = 1;
		// Calculate end position (off screen right)
		var endX = 2248;
		// Animate knife cutting across screen
		tween(self, {
			x: endX
		}, {
			duration: 500,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				// Fade out knife
				tween(self, {
					alpha: 0
				}, {
					duration: 200,
					onFinish: function onFinish() {
						if (onComplete) onComplete();
					}
				});
			}
		});
		// Trigger candy cutting effect when knife reaches each candy
		for (var i = 0; i < targetCandies.length; i++) {
			var candy = targetCandies[i].candy;
			var candyX = candy.x;
			var delay = (candyX + 200) / (endX + 200) * 500; // Calculate when knife reaches this candy
			(function (candyTocut) {
				LK.setTimeout(function () {
					if (candyTocut && !candyTocut.isExploding) {
						// Play sound when knife touches candy
						LK.getSound('explode').play();
						candyTocut.explode();
					}
				}, delay);
			})(candy);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2E1065
});

/**** 
* Game Code
****/ 
// Add visual background
var background = game.addChild(LK.getAsset('Bg', {
	anchorX: 0,
	anchorY: 0,
	scaleX: 20.48,
	scaleY: 27.32
}));
background.x = 0;
background.y = 0;
var grid = game.addChild(new Grid());
var scoreTxt = new Text2('0', {
	size: 120,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0, 0);
scoreTxt.x = 50;
scoreTxt.y = 400;
game.addChild(scoreTxt);
// Initialize score
LK.setScore(0);
scoreTxt.setText(LK.getScore().toString());
// Fill initial grid
grid.fillGrid();
// Instructions text
var instructionsTxt = new Text2('Tap groups of 3+ same colored candies!', {
	size: 60,
	fill: 0xFFFFFF
});
instructionsTxt.anchor.set(0.5, 0);
instructionsTxt.x = 2048 / 2;
instructionsTxt.y = 120;
game.addChild(instructionsTxt);
// Set money to 0 when game starts
storage.money = 0;
// Money counter
var moneyTxt = new Text2('Money: ' + storage.money, {
	size: 80,
	fill: 0xFFD700
});
moneyTxt.anchor.set(0, 0);
moneyTxt.x = 50;
moneyTxt.y = 300;
game.addChild(moneyTxt);
// Shop background
var shopBackground = game.addChild(LK.getAsset('gridBackground', {
	anchorX: 0.5,
	anchorY: 0,
	scaleX: 20,
	scaleY: 4
}));
shopBackground.x = 2048 / 2;
shopBackground.y = 2180;
// Shop UI
var shopTxt = new Text2('SHOP', {
	size: 80,
	fill: 0xFFFFFF
});
shopTxt.anchor.set(0.5, 0);
shopTxt.x = 2048 / 2;
shopTxt.y = 2200;
game.addChild(shopTxt);
var areaBombTxt = new Text2('3x3 Area Bomb (Cost: 15)', {
	size: 60,
	fill: 0xFFFFFF
});
areaBombTxt.anchor.set(0.5, 0);
areaBombTxt.x = 2048 / 2;
areaBombTxt.y = 2300;
game.addChild(areaBombTxt);
var strongBombTxt = new Text2('5x5 Area Bomb (Cost: 25)', {
	size: 60,
	fill: storage.strongBombUnlocked ? 0x00FF00 : 0xFFFFFF
});
strongBombTxt.anchor.set(0.5, 0);
strongBombTxt.x = 2048 / 2;
strongBombTxt.y = 2400;
game.addChild(strongBombTxt);
var fireworkTxt = new Text2('Firework Line Exploder (Cost: 20)', {
	size: 60,
	fill: 0xFFFFFF
});
fireworkTxt.anchor.set(0.5, 0);
fireworkTxt.x = 2048 / 2;
fireworkTxt.y = 2500;
game.addChild(fireworkTxt);
// Combo display
var comboTxt = new Text2('', {
	size: 100,
	fill: 0xFFD700
});
comboTxt.anchor.set(0.5, 0.5);
comboTxt.x = 2048 / 2;
comboTxt.y = 200;
game.addChild(comboTxt);
var usingAreaBomb = false;
var usingStrongBomb = false;
var usingFirework = false;
var strongBombTimer = 0;
var strongBombCooldown = 45000; // 45 seconds in milliseconds
var comboCount = 0;
var comboMultiplier = 1;
var comboTimer = 0;
var comboTimeout = 3000; // 3 seconds to maintain combo
game.down = function (x, y, obj) {
	if (grid.isAnimating) return;
	// Check if clicked on shop area
	if (y >= 2200) {
		// Check if clicked on area bomb purchase
		if (y >= 2300 && y <= 2400) {
			if (!usingAreaBomb && storage.money >= 15) {
				storage.money -= 15;
				usingAreaBomb = true;
				moneyTxt.setText('Money: ' + storage.money);
				areaBombTxt.setText('Select area to explode!');
				areaBombTxt.fill = 0xFF0000;
			}
		}
		// Check if clicked on strong bomb purchase
		if (y >= 2400 && y <= 2500) {
			if (!storage.strongBombUnlocked && storage.money >= 25) {
				storage.money -= 25;
				storage.strongBombUnlocked = true;
				moneyTxt.setText('Money: ' + storage.money);
				strongBombTxt.setText('5x5 Area Bomb (Unlocked!)');
				strongBombTxt.fill = 0x00FF00;
			} else if (storage.strongBombUnlocked && !usingStrongBomb) {
				usingStrongBomb = true;
				strongBombTxt.setText('Select area to explode!');
				strongBombTxt.fill = 0xFF0000;
			}
		}
		// Check if clicked on firework purchase
		if (y >= 2500 && y <= 2600) {
			if (!usingFirework && storage.money >= 20) {
				storage.money -= 20;
				usingFirework = true;
				moneyTxt.setText('Money: ' + storage.money);
				fireworkTxt.setText('Select line to explode!');
				fireworkTxt.fill = 0xFF0000;
			}
		}
		return;
	}
	var gridPos = grid.getGridPosition(x, y);
	if (gridPos.row >= 0 && gridPos.row < grid.gridHeight && gridPos.col >= 0 && gridPos.col < grid.gridWidth) {
		// Check if using area bomb
		if (usingAreaBomb) {
			var points = grid.explodeAreaBomb(gridPos.row, gridPos.col);
			LK.setScore(LK.getScore() + points);
			scoreTxt.setText(LK.getScore().toString());
			usingAreaBomb = false;
			areaBombTxt.setText('3x3 Area Bomb (Cost: 15)');
			areaBombTxt.fill = 0xFFFFFF;
			return;
		}
		// Check if using strong bomb
		if (usingStrongBomb && storage.strongBombUnlocked) {
			var points = grid.explodeStrongBomb(gridPos.row, gridPos.col);
			LK.setScore(LK.getScore() + points);
			scoreTxt.setText(LK.getScore().toString());
			usingStrongBomb = false;
			// Reset to purchasable state
			storage.strongBombUnlocked = false;
			strongBombTxt.setText('5x5 Area Bomb (Cost: 25)');
			strongBombTxt.fill = 0xFFFFFF;
			return;
		}
		// Check if using firework
		if (usingFirework) {
			var points = grid.explodeFirework(gridPos.row, gridPos.col);
			LK.setScore(LK.getScore() + points);
			scoreTxt.setText(LK.getScore().toString());
			usingFirework = false;
			fireworkTxt.setText('Firework Line Exploder (Cost: 20)');
			fireworkTxt.fill = 0xFFFFFF;
			return;
		}
		// Check if clicked candy is money candy
		if (grid.candies[gridPos.row][gridPos.col] && grid.candies[gridPos.row][gridPos.col].colorType === 7) {
			// Give money and remove candy
			storage.money += 5;
			moneyTxt.setText('Money: ' + storage.money);
			grid.candies[gridPos.row][gridPos.col].explode();
			grid.candies[gridPos.row][gridPos.col] = null;
			LK.setTimeout(function () {
				grid.applyGravity();
			}, 350);
			return;
		}
		// Check if clicked candy is a bomb
		if (grid.candies[gridPos.row][gridPos.col] && grid.candies[gridPos.row][gridPos.col].colorType === 6) {
			// Explode bomb immediately
			var points = grid.explodeBomb(gridPos.row, gridPos.col);
			LK.setScore(LK.getScore() + points);
			scoreTxt.setText(LK.getScore().toString());
		} else if (grid.selectGroup(gridPos.row, gridPos.col)) {
			// Valid group selected, explode on next tap
			LK.setTimeout(function () {
				if (grid.selectedGroup.length >= 3) {
					var points = grid.explodeSelectedGroup();
					LK.setScore(LK.getScore() + points);
					scoreTxt.setText(LK.getScore().toString());
				}
			}, 100);
		} else {
			// Invalid move - reset combo
			comboCount = 0;
			comboMultiplier = 1;
			comboTimer = 0;
			comboTxt.setText('');
		}
	}
};
// Start background music
LK.playMusic('bgMusic');
game.update = function () {
	// Timer logic removed - no cooldown needed
	// Update combo timer
	if (comboTimer > 0) {
		comboTimer -= 16; // Approximately 60 FPS
		if (comboTimer <= 0) {
			// Reset combo
			comboCount = 0;
			comboMultiplier = 1;
			comboTxt.setText('');
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -268,8 +268,36 @@
 		}
 		if (self.selectedGroup.length >= 7) {
 			points += 100;
 		}
+		// Apply combo multiplier
+		points = Math.floor(points * comboMultiplier);
+		// Increment combo count
+		comboCount++;
+		comboMultiplier = 1 + (comboCount - 1) * 0.5; // 1x, 1.5x, 2x, 2.5x, etc.
+		comboTimer = comboTimeout;
+		// Update combo display
+		if (comboCount > 1) {
+			comboTxt.setText('COMBO x' + comboCount + '!');
+			comboTxt.fill = comboCount >= 5 ? 0xFF0000 : 0xFFD700;
+			// Flash combo text
+			tween(comboTxt, {
+				scaleX: 1.3,
+				scaleY: 1.3
+			}, {
+				duration: 200,
+				easing: tween.easeOut,
+				onFinish: function onFinish() {
+					tween(comboTxt, {
+						scaleX: 1.0,
+						scaleY: 1.0
+					}, {
+						duration: 200,
+						easing: tween.easeIn
+					});
+				}
+			});
+		}
 		// Clear candy references from grid first
 		for (var i = 0; i < self.selectedGroup.length; i++) {
 			var item = self.selectedGroup[i];
 			self.candies[item.row][item.col] = null;
@@ -379,8 +407,17 @@
 	};
 	self.checkChainReactions = function () {
 		// Simply finish the animation process without auto-exploding
 		self.isAnimating = false;
+		// Reset combo if no more valid moves after timeout
+		LK.setTimeout(function () {
+			if (comboTimer > 0) {
+				comboTimer = 0;
+				comboCount = 0;
+				comboMultiplier = 1;
+				comboTxt.setText('');
+			}
+		}, 100);
 		self.checkGameOver();
 	};
 	self.checkGameOver = function () {
 		var visited = [];
@@ -688,13 +725,26 @@
 fireworkTxt.anchor.set(0.5, 0);
 fireworkTxt.x = 2048 / 2;
 fireworkTxt.y = 2500;
 game.addChild(fireworkTxt);
+// Combo display
+var comboTxt = new Text2('', {
+	size: 100,
+	fill: 0xFFD700
+});
+comboTxt.anchor.set(0.5, 0.5);
+comboTxt.x = 2048 / 2;
+comboTxt.y = 200;
+game.addChild(comboTxt);
 var usingAreaBomb = false;
 var usingStrongBomb = false;
 var usingFirework = false;
 var strongBombTimer = 0;
 var strongBombCooldown = 45000; // 45 seconds in milliseconds
+var comboCount = 0;
+var comboMultiplier = 1;
+var comboTimer = 0;
+var comboTimeout = 3000; // 3 seconds to maintain combo
 game.down = function (x, y, obj) {
 	if (grid.isAnimating) return;
 	// Check if clicked on shop area
 	if (y >= 2200) {
@@ -794,12 +844,28 @@
 					LK.setScore(LK.getScore() + points);
 					scoreTxt.setText(LK.getScore().toString());
 				}
 			}, 100);
+		} else {
+			// Invalid move - reset combo
+			comboCount = 0;
+			comboMultiplier = 1;
+			comboTimer = 0;
+			comboTxt.setText('');
 		}
 	}
 };
 // Start background music
 LK.playMusic('bgMusic');
 game.update = function () {
 	// Timer logic removed - no cooldown needed
+	// Update combo timer
+	if (comboTimer > 0) {
+		comboTimer -= 16; // Approximately 60 FPS
+		if (comboTimer <= 0) {
+			// Reset combo
+			comboCount = 0;
+			comboMultiplier = 1;
+			comboTxt.setText('');
+		}
+	}
 };
\ No newline at end of file