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

/**** 
* Classes
****/ 
// Card class
var Card = Container.expand(function () {
	var self = Container.call(this);
	// Card properties
	self.rank = 1; // 1=Ace, 13=King
	self.suit = 0; // 0=spades (for MVP, only one suit)
	self.faceUp = false;
	self.selected = false;
	// Card graphics
	var cardFace = self.attachAsset('cardFace', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var cardBack = self.attachAsset('cardBack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	cardBack.visible = true;
	cardFace.visible = false;
	// Card label (rank/suit) - center
	var label = new Text2('', {
		size: 60,
		fill: 0x222244
	});
	label.anchor.set(0.5, 0.5);
	label.x = 0;
	label.y = 0;
	self.addChild(label);
	// Top-left corner label
	var labelTL = new Text2('', {
		size: 38,
		fill: 0x222244
	});
	labelTL.anchor.set(0, 0);
	labelTL.x = -cardFace.width / 2 + 18;
	labelTL.y = -cardFace.height / 2 + 10;
	self.addChild(labelTL);
	// Bottom-right corner label
	var labelBR = new Text2('', {
		size: 38,
		fill: 0x222244
	});
	labelBR.anchor.set(1, 1);
	labelBR.x = cardFace.width / 2 - 18;
	labelBR.y = cardFace.height / 2 - 10;
	self.addChild(labelBR);
	// Set card data
	self.setCard = function (rank, suit, faceUp) {
		self.rank = rank;
		self.suit = suit;
		self.faceUp = faceUp;
		self.updateFace();
	};
	// Update card face/back and label
	self.updateFace = function () {
		cardFace.visible = self.faceUp;
		cardBack.visible = !self.faceUp;
		if (self.faceUp) {
			// Show rank and suit
			var rankStr = '';
			if (self.rank === 1) rankStr = 'A';else if (self.rank === 11) rankStr = 'J';else if (self.rank === 12) rankStr = 'Q';else if (self.rank === 13) rankStr = 'K';else rankStr = '' + self.rank;
			// Only spades for MVP
			label.setText(rankStr + ' ♠');
			label.visible = true;
			labelTL.setText(rankStr);
			labelTL.visible = true;
			labelBR.setText(rankStr);
			labelBR.visible = true;
		} else {
			label.visible = false;
			labelTL.visible = false;
			labelBR.visible = false;
		}
		self.updateSelected();
	};
	// Visual feedback for selection
	self.updateSelected = function () {
		if (self.selected) {
			cardFace.tint = 0x99ccff;
			cardBack.tint = 0x99ccff;
		} else {
			cardFace.tint = 0xffffff;
			cardBack.tint = 0xffffff;
		}
	};
	// Flip card
	self.flip = function (faceUp) {
		self.faceUp = faceUp;
		self.updateFace();
	};
	// Touch events
	self.down = function (x, y, obj) {
		if (self.faceUp) {
			// Let game handle selection
			if (game) game.onCardDown(self, x, y, obj);
		}
	};
	return self;
});
// Stock pile class (for dealing new rows)
var StockPile = Container.expand(function () {
	var self = Container.call(this);
	self.cards = [];
	// Add card to stock
	self.addCard = function (card) {
		self.cards.push(card);
		self.addChild(card);
		card.x = 0;
		card.y = 0;
	};
	// Deal one card per tableau pile
	self.dealToTableau = function (tableauPiles) {
		if (self.cards.length < tableauPiles.length) return false;
		for (var i = 0; i < tableauPiles.length; i++) {
			var card = self.cards.shift();
			card.flip(true);
			tableauPiles[i].addCard(card);
		}
		return true;
	};
	// Is empty?
	self.isEmpty = function () {
		return self.cards.length === 0;
	};
	return self;
});
// Tableau pile class
var TableauPile = Container.expand(function () {
	var self = Container.call(this);
	self.cards = [];
	// Add card to pile
	self.addCard = function (card) {
		self.cards.push(card);
		self.addChild(card);
		self.layout();
	};
	// Remove card(s) from pile starting at index
	self.removeCardsFrom = function (idx) {
		var removed = [];
		while (self.cards.length > idx) {
			var c = self.cards.pop();
			c.parent.removeChild(c);
			removed.unshift(c);
		}
		self.layout();
		return removed;
	};
	// Get top card
	self.topCard = function () {
		if (self.cards.length === 0) return null;
		return self.cards[self.cards.length - 1];
	};
	// Layout cards in pile
	self.layout = function () {
		for (var i = 0; i < self.cards.length; i++) {
			var c = self.cards[i];
			c.x = 0;
			c.y = i * 60; // Overlap
			c.zIndex = i;
		}
	};
	// Reveal top card if needed
	self.revealTop = function () {
		var top = self.topCard();
		if (top && !top.faceUp) {
			top.flip(true);
		}
	};
	// Get index of card in pile
	self.indexOf = function (card) {
		for (var i = 0; i < self.cards.length; i++) {
			if (self.cards[i] === card) return i;
		}
		return -1;
	};
	// Can move sequence starting at idx?
	self.canMoveSequence = function (idx) {
		// All cards from idx to end must be face up and in descending order
		for (var i = idx; i < self.cards.length - 1; i++) {
			var c1 = self.cards[i];
			var c2 = self.cards[i + 1];
			if (!c1.faceUp || !c2.faceUp) return false;
			if (c1.rank !== c2.rank + 1) return false;
		}
		return self.cards[idx].faceUp;
	};
	// Can accept a sequence of cards (cardsArr)?
	self.canAccept = function (cardsArr) {
		if (self.cards.length === 0) {
			// Only King can be placed on empty pile
			return cardsArr[0].rank === 13;
		} else {
			var top = self.topCard();
			var moving = cardsArr[0];
			return top.faceUp && top.rank === moving.rank + 1;
		}
	};
	// Remove completed set (K-A)
	self.removeCompleteSet = function () {
		// Check if last 13 cards are a complete set
		if (self.cards.length < 13) return false;
		for (var i = 0; i < 13; i++) {
			var c = self.cards[self.cards.length - 1 - i];
			if (!c.faceUp || c.rank !== 13 - i) return false;
		}
		// Remove them
		var removed = [];
		for (var i = 0; i < 13; i++) {
			var c = self.cards.pop();
			c.parent.removeChild(c);
			removed.unshift(c);
		}
		self.layout();
		return true;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Add a large faded spider icon to the background, centered
// Game constants 
var backgroundSpider = LK.getAsset('spider', {
	anchorX: 0.5,
	anchorY: 0.5,
	scaleX: 8,
	scaleY: 8
});
backgroundSpider.x = 2048 / 2;
backgroundSpider.y = 2732 / 2;
backgroundSpider.alpha = 0.08;
game.addChildAt(backgroundSpider, 0); // Ensure it's behind all other elements
// Card back (spider web themed)
// Card face (white for now, will overlay suit/rank)
// Spider icon for completed set
var CARD_WIDTH = 180;
var CARD_HEIGHT = 260;
var TABLEAU_COUNT = 10;
var TABLEAU_SPACING = 32;
var TABLEAU_TOP = 520;
var TABLEAU_LEFT = (2048 - (TABLEAU_COUNT * CARD_WIDTH + (TABLEAU_COUNT - 1) * TABLEAU_SPACING)) / 2;
var STOCK_X = 2048 - 200;
var STOCK_Y = 120;
var COMPLETED_X = 200;
var COMPLETED_Y = 120;
// Game state
var tableauPiles = [];
var stockPile = null;
var completedSets = 0;
var draggingCards = null;
var draggingFromPile = null;
var dragOffsetX = 0;
var dragOffsetY = 0;
var dragStartX = 0;
var dragStartY = 0;
var dragValidTarget = null;
var dragTargetPile = null;
var canDeal = true;
// GUI
var scoreTxt = new Text2('0', {
	size: 90,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var dealBtn = new Text2('Deal', {
	size: 70,
	fill: 0xFFFFFF
});
dealBtn.anchor.set(0.5, 0.5);
dealBtn.x = STOCK_X + CARD_WIDTH / 2;
dealBtn.y = STOCK_Y + CARD_HEIGHT + 60;
LK.gui.top.addChild(dealBtn);
// Completed sets display
var completedSpiders = [];
// Initialize tableau piles
for (var i = 0; i < TABLEAU_COUNT; i++) {
	var pile = new TableauPile();
	pile.x = TABLEAU_LEFT + i * (CARD_WIDTH + TABLEAU_SPACING);
	pile.y = TABLEAU_TOP;
	game.addChild(pile);
	tableauPiles.push(pile);
}
// Initialize stock pile
stockPile = new StockPile();
stockPile.x = STOCK_X;
stockPile.y = STOCK_Y;
game.addChild(stockPile);
// (Removed stock label)
// Shuffle and deal cards
function shuffleDeck() {
	// 8 decks of spades (104 cards)
	var deck = [];
	for (var d = 0; d < 8; d++) {
		for (var r = 1; r <= 13; r++) {
			var card = new Card();
			card.setCard(r, 0, false);
			deck.push(card);
		}
	}
	// Fisher-Yates shuffle
	for (var i = deck.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var tmp = deck[i];
		deck[i] = deck[j];
		deck[j] = tmp;
	}
	return deck;
}
function dealInitial() {
	var deck = shuffleDeck();
	// 54 cards to tableau (first 4 piles get 6, rest get 5)
	for (var i = 0; i < TABLEAU_COUNT; i++) {
		var count = i < 4 ? 6 : 5;
		for (var j = 0; j < count; j++) {
			var card = deck.shift();
			tableauPiles[i].addCard(card);
		}
	}
	// Flip top card of each pile
	for (var i = 0; i < TABLEAU_COUNT; i++) {
		tableauPiles[i].topCard().flip(true);
	}
	// Remaining 50 cards to stock
	while (deck.length > 0) {
		var card = deck.shift();
		stockPile.addCard(card);
	}
	completedSets = 0;
	updateScore();
	updateCompletedSpiders();
	canDeal = true;
}
function updateScore() {
	scoreTxt.setText('Sets: ' + completedSets);
}
function updateCompletedSpiders() {
	// Remove old
	for (var i = 0; i < completedSpiders.length; i++) {
		if (completedSpiders[i].parent) completedSpiders[i].parent.removeChild(completedSpiders[i]);
	}
	completedSpiders = [];
	// Add new
	for (var i = 0; i < completedSets; i++) {
		var spider = LK.getAsset('spider', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		spider.x = COMPLETED_X + i * 110;
		spider.y = COMPLETED_Y;
		game.addChild(spider);
		completedSpiders.push(spider);
	}
}
// Handle card selection and drag
game.onCardDown = function (card, x, y, obj) {
	// Find which pile this card is in
	var pile = null;
	var idx = -1;
	for (var i = 0; i < tableauPiles.length; i++) {
		var p = tableauPiles[i];
		var j = p.indexOf(card);
		if (j !== -1) {
			pile = p;
			idx = j;
			break;
		}
	}
	if (!pile) return;
	// Can move sequence?
	if (!pile.canMoveSequence(idx)) return;
	// Prepare drag
	draggingCards = [];
	for (var k = idx; k < pile.cards.length; k++) {
		var c = pile.cards[k];
		c.selected = true;
		c.updateSelected();
		draggingCards.push(c);
	}
	draggingFromPile = pile;
	// Bring to front
	for (var k = 0; k < draggingCards.length; k++) {
		game.addChild(draggingCards[k]);
	}
	// Offset
	dragOffsetX = card.x;
	dragOffsetY = card.y;
	dragStartX = card.parent.x + card.x;
	dragStartY = card.parent.y + card.y;
};
// Handle drag move
game.move = function (x, y, obj) {
	if (!draggingCards) return;
	// Move cards
	for (var i = 0; i < draggingCards.length; i++) {
		draggingCards[i].x = x - dragOffsetX;
		draggingCards[i].y = y - dragOffsetY + i * 60;
	}
	// Check for valid drop target
	dragValidTarget = null;
	dragTargetPile = null;
	for (var i = 0; i < tableauPiles.length; i++) {
		var pile = tableauPiles[i];
		// Don't allow drop on self
		if (pile === draggingFromPile) continue;
		// Get pile bounds
		var px = pile.x;
		var py = pile.y + pile.cards.length * 60;
		var pw = CARD_WIDTH;
		var ph = CARD_HEIGHT;
		if (x > px && x < px + pw && y > py - 60 && y < py + ph) {
			// Can accept?
			if (pile.canAccept(draggingCards)) {
				dragValidTarget = pile;
				dragTargetPile = pile;
				break;
			}
		}
	}
};
// Handle drag end
game.up = function (x, y, obj) {
	if (!draggingCards) return;
	// Drop
	if (dragValidTarget && dragTargetPile) {
		// Remove from old pile
		var idx = draggingFromPile.indexOf(draggingCards[0]);
		draggingFromPile.removeCardsFrom(idx);
		// Add to new pile
		for (var i = 0; i < draggingCards.length; i++) {
			dragTargetPile.addCard(draggingCards[i]);
		}
		// Reveal top card in old pile
		draggingFromPile.revealTop();
		// Check for completed set
		if (dragTargetPile.removeCompleteSet()) {
			completedSets += 1;
			updateScore();
			updateCompletedSpiders();
			// Animate spider
			var spider = LK.getAsset('spider', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			spider.x = dragTargetPile.x + CARD_WIDTH / 2;
			spider.y = dragTargetPile.y + dragTargetPile.cards.length * 60 + CARD_HEIGHT / 2;
			game.addChild(spider);
			tween(spider, {
				y: COMPLETED_Y,
				x: COMPLETED_X + (completedSets - 1) * 110
			}, {
				duration: 800,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					if (spider.parent) spider.parent.removeChild(spider);
					updateCompletedSpiders();
				}
			});
		}
		// Win condition: 8 sets
		if (completedSets >= 8) {
			LK.showYouWin();
			return;
		}
	} else {
		// Return to original pile
		for (var i = 0; i < draggingCards.length; i++) {
			draggingCards[i].x = dragStartX - draggingFromPile.x;
			draggingCards[i].y = dragStartY - draggingFromPile.y + i * 60;
			draggingFromPile.addChild(draggingCards[i]);
		}
		draggingFromPile.layout();
	}
	// Deselect
	for (var i = 0; i < draggingCards.length; i++) {
		draggingCards[i].selected = false;
		draggingCards[i].updateSelected();
	}
	draggingCards = null;
	draggingFromPile = null;
	dragValidTarget = null;
	dragTargetPile = null;
};
// Deal new row
dealBtn.down = function (x, y, obj) {
	if (!canDeal) return;
	// Only allow if all tableau piles have at least one card
	for (var i = 0; i < tableauPiles.length; i++) {
		if (tableauPiles[i].cards.length === 0) return;
	}
	if (stockPile.isEmpty()) return;
	canDeal = false;
	// Animate deal
	var dealt = stockPile.dealToTableau(tableauPiles);
	if (dealt) {
		// Flip top card of each pile
		for (var i = 0; i < tableauPiles.length; i++) {
			tableauPiles[i].topCard().flip(true);
		}
	}
	// Allow next deal after short delay
	LK.setTimeout(function () {
		canDeal = true;
	}, 400);
};
// Touch on stock pile (deal)
stockPile.down = function (x, y, obj) {
	dealBtn.down(x, y, obj);
};
// Reset game
function resetGame() {
	// Remove all cards
	for (var i = 0; i < tableauPiles.length; i++) {
		var pile = tableauPiles[i];
		while (pile.cards.length > 0) {
			var c = pile.cards.pop();
			if (c.parent) c.parent.removeChild(c);
		}
	}
	while (stockPile.cards.length > 0) {
		var c = stockPile.cards.pop();
		if (c.parent) c.parent.removeChild(c);
	}
	completedSets = 0;
	updateScore();
	updateCompletedSpiders();
	canDeal = true;
	draggingCards = null;
	draggingFromPile = null;
	dragValidTarget = null;
	dragTargetPile = null;
	dealInitial();
}
// Game over: no more moves
function checkGameOver() {
	// If no moves and stock is empty
	var canMove = false;
	for (var i = 0; i < tableauPiles.length; i++) {
		var pile = tableauPiles[i];
		for (var j = 0; j < pile.cards.length; j++) {
			if (pile.canMoveSequence(j)) {
				// Try to move to another pile
				var seq = [];
				for (var k = j; k < pile.cards.length; k++) seq.push(pile.cards[k]);
				for (var t = 0; t < tableauPiles.length; t++) {
					if (t === i) continue;
					if (tableauPiles[t].canAccept(seq)) {
						canMove = true;
						break;
					}
				}
			}
			if (canMove) break;
		}
		if (canMove) break;
	}
	if (!canMove && stockPile.isEmpty()) {
		LK.showGameOver();
	}
}
// Game update
game.update = function () {
	// Check for game over
	checkGameOver();
};
// Start game
dealInitial();

===================================================================
--- original.js
+++ change.js
@@ -301,17 +301,9 @@
 stockPile = new StockPile();
 stockPile.x = STOCK_X;
 stockPile.y = STOCK_Y;
 game.addChild(stockPile);
-// Add a label for the stock pile to visually separate it from tableau
-var stockLabel = new Text2('Stock', {
-	size: 48,
-	fill: 0x222244
-});
-stockLabel.anchor.set(0.5, 1);
-stockLabel.x = STOCK_X + CARD_WIDTH / 2;
-stockLabel.y = STOCK_Y - 10;
-game.addChild(stockLabel);
+// (Removed stock label)
 // Shuffle and deal cards
 function shuffleDeck() {
 	// 8 decks of spades (104 cards)
 	var deck = [];