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

/**** 
* Classes
****/ 
// --- HexTile: A single hexagon on the board ---
var HexTile = Container.expand(function () {
	var self = Container.call(this);
	// Color: 'pink', 'blue', 'yellow', 'green', 'purple', 'orange'
	self.color = 'pink';
	self.gridQ = 0; // axial q
	self.gridR = 0; // axial r
	self.occupied = false;
	self.face = null;
	// Attach hex asset
	self.setColor = function (color) {
		self.color = color;
		if (self.hex) self.removeChild(self.hex);
		self.hex = self.attachAsset('hex_' + color, {
			anchorX: 0.5,
			anchorY: 0.5
		});
		// Add face
		if (self.face) self.removeChild(self.face);
		self.face = self.attachAsset('face', {
			anchorX: 0.5,
			anchorY: 0.5,
			x: 0,
			y: 0,
			scaleX: 0.7,
			scaleY: 0.7
		});
	};
	self.setEmpty = function () {
		self.occupied = false;
		if (self.hex) self.hex.visible = false;
		if (self.face) self.face.visible = false;
	};
	self.setFilled = function (color) {
		self.occupied = true;
		self.setColor(color);
		self.hex.visible = true;
		self.face.visible = true;
	};
	// Pop animation
	self.pop = function () {
		if (!self.occupied) return;
		// Defensive: Remove any previous pop effect if present
		if (self._popFx) {
			if (typeof self._popFx.destroy === "function") {
				self._popFx.destroy();
			}
			self._popFx = null;
		}
		// Defensive: Remove any previous pop asset from children if present
		for (var i = self.children.length - 1; i >= 0; --i) {
			var child = self.children[i];
			if (child && child.assetId === 'pop') {
				if (typeof child.destroy === "function") {
					child.destroy();
				}
			}
		}
		// Only create a new pop effect after all previous pop assets are destroyed
		var popFx = self.attachAsset('pop', {
			anchorX: 0.5,
			anchorY: 0.5,
			alpha: 0.5,
			scaleX: 1,
			scaleY: 1
		});
		self._popFx = popFx;
		tween(popFx, {
			scaleX: 1.7,
			scaleY: 1.7,
			alpha: 0
		}, {
			duration: 350,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				if (self._popFx === popFx) self._popFx = null;
				if (typeof popFx.destroy === "function") {
					popFx.destroy();
				}
			}
		});
		LK.getSound('pop1').play();
		self.setEmpty();
	};
	return self;
});
// --- Piece: A draggable group of 1-5 hexes in a shape ---
var Piece = Container.expand(function () {
	var self = Container.call(this);
	// Shape: array of {q, r, color}
	self.shape = [];
	self.hexes = [];
	self.dragging = false;
	self.valid = true; // is current placement valid
	// Generate a piece from a shape definition
	self.setShape = function (shape) {
		self.shape = shape;
		// Remove old hexes
		for (var i = 0; i < self.hexes.length; ++i) self.removeChild(self.hexes[i]);
		self.hexes = [];
		// Add new hexes
		for (var i = 0; i < shape.length; ++i) {
			var hex = self.attachAsset('hex_' + shape[i].color, {
				anchorX: 0.5,
				anchorY: 0.5,
				x: 0,
				y: 0
			});
			// Add face
			var face = self.attachAsset('face', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: 0,
				y: 0,
				scaleX: 0.7,
				scaleY: 0.7
			});
			hex.addChild(face);
			self.hexes.push(hex);
		}
		// Position hexes
		for (var i = 0; i < shape.length; ++i) {
			var pos = axialToPixel(shape[i].q, shape[i].r, pieceHexSize);
			self.hexes[i].x = pos.x;
			self.hexes[i].y = pos.y;
		}
	};
	// Highlight for valid/invalid placement
	self.setValid = function (valid) {
		self.valid = valid;
		for (var i = 0; i < self.hexes.length; ++i) {
			self.hexes[i].alpha = valid ? 1 : 0.4;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
/**** 
* Helper Functions
****/ 
// Hex math
var game = new LK.Game({
	backgroundColor: 0xbfdfff // Dreamy blue sky
});

/**** 
* Game Code
****/ 
// Hex math
/**** 
* Helper Functions
****/ 
// Sound effects
// Pop effect
// Faces (as colored ellipses for now, can be replaced with images later)
// Cloud background (large, white, semi-transparent ellipses)
// Hex tile shapes (pastel colors)
// --- Add dreamy cloud background ---
var sqrt3 = Math.sqrt(3);
function axialToPixel(q, r, size) {
	// Flat-topped hex
	var x = size * (3 / 2 * q);
	var y = size * (sqrt3 * (r + q / 2));
	return {
		x: x,
		y: y
	};
}
function pixelToAxial(x, y, size) {
	var q = 2 / 3 * x / size;
	var r = (-1 / 3 * x + sqrt3 / 3 * y) / size;
	return hexRound(q, r);
}
function hexRound(q, r) {
	var x = q;
	var z = r;
	var y = -x - z;
	var rx = Math.round(x);
	var ry = Math.round(y);
	var rz = Math.round(z);
	var x_diff = Math.abs(rx - x);
	var y_diff = Math.abs(ry - y);
	var z_diff = Math.abs(rz - z);
	if (x_diff > y_diff && x_diff > z_diff) rx = -ry - rz;else if (y_diff > z_diff) ry = -rx - rz;else rz = -rx - ry;
	return {
		q: rx,
		r: rz
	};
}
// Generate random color
function randomColor() {
	var arr = ['pink', 'blue', 'yellow', 'green', 'purple', 'orange'];
	return arr[Math.floor(Math.random() * arr.length)];
}
// Piece shape library (axial coordinates, always includes 0,0)
var pieceShapes = [
// Single
[{
	q: 0,
	r: 0
}],
// Line 2
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}],
// Line 3
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 2,
	r: 0
}],
// L shape
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 1,
	r: 1
}],
// Triangle
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 0,
	r: 1
}],
// Zigzag
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 1,
	r: 1
}, {
	q: 2,
	r: 1
}],
// Big line
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 2,
	r: 0
}, {
	q: 3,
	r: 0
}, {
	q: 4,
	r: 0
}],
// Big triangle
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 0,
	r: 1
}, {
	q: 1,
	r: 1
}, {
	q: 0,
	r: 2
}],
// T shape
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: 2,
	r: 0
}, {
	q: 1,
	r: 1
}],
// Plus
[{
	q: 0,
	r: 0
}, {
	q: 1,
	r: 0
}, {
	q: -1,
	r: 0
}, {
	q: 0,
	r: 1
}, {
	q: 0,
	r: -1
}]];
// Generate a random piece shape with random colors
function randomPieceShape() {
	var base = pieceShapes[Math.floor(Math.random() * pieceShapes.length)];
	var color = randomColor();
	var arr = [];
	for (var i = 0; i < base.length; ++i) {
		arr.push({
			q: base[i].q,
			r: base[i].r,
			color: color
		});
	}
	return arr;
}
/**** 
* Game Board Setup
****/ 
// Board size
var boardRadius = 5; // 5 rings from center (total diameter 11)
var boardHexSize = 60; // px, for board tiles
var pieceHexSize = 60; // px, for piece tiles
// Board center in pixels
var boardCenterX = 2048 / 2;
var boardCenterY = 1200;
// Board data: array of {q, r, tile}
var boardTiles = [];
// Build board: all hexes with |q|+|r|+|s| <= boardRadius*2
for (var q = -boardRadius; q <= boardRadius; ++q) {
	for (var r = -boardRadius; r <= boardRadius; ++r) {
		var s = -q - r;
		if (Math.abs(q) <= boardRadius && Math.abs(r) <= boardRadius && Math.abs(s) <= boardRadius) {
			// Create tile
			var tile = new HexTile();
			tile.gridQ = q;
			tile.gridR = r;
			tile.setEmpty();
			var pos = axialToPixel(q, r, boardHexSize);
			tile.x = boardCenterX + pos.x;
			tile.y = boardCenterY + pos.y;
			boardTiles.push({
				q: q,
				r: r,
				tile: tile
			});
		}
	}
}
// Helper: find tile at q,r
function getTile(q, r) {
	for (var i = 0; i < boardTiles.length; ++i) {
		if (boardTiles[i].q === q && boardTiles[i].r === r) return boardTiles[i].tile;
	}
	return null;
}
var cloud1 = LK.getAsset('cloud1', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2 - 300,
	y: 400,
	alpha: 0.18
});
var cloud2 = LK.getAsset('cloud2', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2 + 250,
	y: 600,
	alpha: 0.13
});
var cloud3 = LK.getAsset('cloud3', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2 - 200,
	y: 900,
	alpha: 0.10
});
game.addChild(cloud1);
game.addChild(cloud2);
game.addChild(cloud3);
// --- Add board tiles to game ---
for (var i = 0; i < boardTiles.length; ++i) {
	game.addChild(boardTiles[i].tile);
}
// --- Score display ---
var score = 0;
var scoreTxt = new Text2('0', {
	size: 120,
	fill: "#fff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// --- Piece tray (bottom center) ---
var trayY = 2732 - 350;
var trayX = 2048 / 2;
var traySpacing = 320;
var trayPieces = [null, null, null]; // 3 pieces at a time
// --- Generate new pieces in tray ---
function refillTray() {
	for (var i = 0; i < 3; ++i) {
		if (trayPieces[i]) {
			trayPieces[i].destroy();
			trayPieces[i] = null;
		}
		var piece = new Piece();
		piece.setShape(randomPieceShape());
		piece.x = trayX + (i - 1) * traySpacing;
		piece.y = trayY;
		trayPieces[i] = piece;
		game.addChild(piece);
	}
}
refillTray();
// --- Drag and drop logic ---
var draggingPiece = null;
var dragOffsetX = 0;
var dragOffsetY = 0;
var dragStartX = 0;
var dragStartY = 0;
// Helper: get board position under a pixel
function getBoardPosUnder(x, y) {
	// Convert to board-local
	var px = x - boardCenterX;
	var py = y - boardCenterY;
	var axial = pixelToAxial(px, py, boardHexSize);
	return axial;
}
// Helper: can place piece at board q,r
function canPlacePiece(piece, q, r) {
	for (var i = 0; i < piece.shape.length; ++i) {
		var dq = piece.shape[i].q;
		var dr = piece.shape[i].r;
		var tile = getTile(q + dq, r + dr);
		if (!tile || tile.occupied) return false;
	}
	return true;
}
// Helper: place piece at board q,r
function placePiece(piece, q, r) {
	for (var i = 0; i < piece.shape.length; ++i) {
		var dq = piece.shape[i].q;
		var dr = piece.shape[i].r;
		var color = piece.shape[i].color;
		var tile = getTile(q + dq, r + dr);
		if (tile) tile.setFilled(color);
	}
}
// Helper: remove piece from tray
function removePieceFromTray(piece) {
	for (var i = 0; i < 3; ++i) {
		if (trayPieces[i] === piece) {
			trayPieces[i].destroy();
			trayPieces[i] = null;
		}
	}
}
// --- Game move events ---
game.down = function (x, y, obj) {
	// Check if a piece in tray is touched
	for (var i = 0; i < 3; ++i) {
		var piece = trayPieces[i];
		if (!piece) continue;
		var local = piece.toLocal(game.toGlobal({
			x: x,
			y: y
		}));
		// Check if touch is within piece bounds
		for (var j = 0; j < piece.hexes.length; ++j) {
			var hx = piece.hexes[j].x;
			var hy = piece.hexes[j].y;
			var dx = local.x - hx;
			var dy = local.y - hy;
			if (dx * dx + dy * dy < pieceHexSize * pieceHexSize * 0.4) {
				draggingPiece = piece;
				dragStartX = piece.x;
				dragStartY = piece.y;
				dragOffsetX = x - piece.x;
				dragOffsetY = y - piece.y;
				piece.dragging = true;
				piece.setValid(true);
				// Bring to front
				game.addChild(piece);
				return;
			}
		}
	}
};
game.move = function (x, y, obj) {
	if (!draggingPiece) return;
	// Move piece
	draggingPiece.x = x - dragOffsetX;
	draggingPiece.y = y - dragOffsetY;
	// Snap to board if close
	var pos = getBoardPosUnder(draggingPiece.x, draggingPiece.y);
	var canPlace = canPlacePiece(draggingPiece, pos.q, pos.r);
	draggingPiece.setValid(canPlace);
};
game.up = function (x, y, obj) {
	if (!draggingPiece) return;
	// Try to place
	var pos = getBoardPosUnder(draggingPiece.x, draggingPiece.y);
	if (canPlacePiece(draggingPiece, pos.q, pos.r)) {
		// Place
		placePiece(draggingPiece, pos.q, pos.r);
		removePieceFromTray(draggingPiece);
		draggingPiece.destroy();
		draggingPiece = null;
		// Check for matches and refill tray if all used
		checkAndPopMatches();
		if (trayPieces.every(function (p) {
			return !p;
		})) {
			refillTray();
		}
		// Check for game over
		if (!canAnyPieceBePlaced()) {
			LK.showGameOver();
		}
	} else {
		// Return to tray
		tween(draggingPiece, {
			x: dragStartX,
			y: dragStartY
		}, {
			duration: 200,
			easing: tween.easeOut
		});
		draggingPiece.setValid(true);
		draggingPiece.dragging = false;
		draggingPiece = null;
	}
};
// --- Matching and popping logic ---
// Find all groups of 3+ connected same-color tiles, pop them, and chain
function checkAndPopMatches() {
	var popped = false;
	var visited = {};
	var combos = 0;
	for (var i = 0; i < boardTiles.length; ++i) {
		var tile = boardTiles[i].tile;
		if (!tile.occupied) continue;
		var key = tile.gridQ + ',' + tile.gridR;
		if (visited[key]) continue;
		// BFS for connected same-color
		var group = [];
		var queue = [{
			q: tile.gridQ,
			r: tile.gridR
		}];
		while (queue.length) {
			var cur = queue.pop();
			var ckey = cur.q + ',' + cur.r;
			if (visited[ckey]) continue;
			var ctile = getTile(cur.q, cur.r);
			if (!ctile || !ctile.occupied || ctile.color !== tile.color) continue;
			visited[ckey] = true;
			group.push(ctile);
			// 6 neighbors
			var dirs = [[1, 0], [0, 1], [-1, 1], [-1, 0], [0, -1], [1, -1]];
			for (var d = 0; d < 6; ++d) {
				var nq = cur.q + dirs[d][0];
				var nr = cur.r + dirs[d][1];
				queue.push({
					q: nq,
					r: nr
				});
			}
		}
		if (group.length >= 3) {
			// Pop group
			for (var j = 0; j < group.length; ++j) {
				group[j].pop();
			}
			score += group.length;
			popped = true;
			combos++;
		}
	}
	if (popped) {
		scoreTxt.setText(score);
		if (combos > 1) {
			LK.getSound('combo').play();
		}
		// Chain: after pop, check again after short delay
		LK.setTimeout(checkAndPopMatches, 400);
	}
}
// --- Can any piece be placed? ---
function canAnyPieceBePlaced() {
	for (var i = 0; i < 3; ++i) {
		var piece = trayPieces[i];
		if (!piece) continue;
		// Try all board positions
		for (var j = 0; j < boardTiles.length; ++j) {
			var q = boardTiles[j].q;
			var r = boardTiles[j].r;
			if (canPlacePiece(piece, q, r)) return true;
		}
	}
	return false;
}
// --- Game update (not used for now) ---
game.update = function () {
	// No per-frame logic needed
};

===================================================================
--- original.js
+++ change.js
@@ -63,10 +63,9 @@
 					child.destroy();
 				}
 			}
 		}
-		// Ensure _popFx is not set to a non-array value in dynamicAssets
-		// (No assignment to dynamicAssets here, just local _popFx)
+		// Only create a new pop effect after all previous pop assets are destroyed
 		var popFx = self.attachAsset('pop', {
 			anchorX: 0.5,
 			anchorY: 0.5,
 			alpha: 0.5,