initial commit

.gitignore

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+node_modules
+
+# Output
+.output
+.vercel
+.netlify
+.wrangler
+/.svelte-kit
+/build
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Env
+.env
+.env.*
+!.env.example
+!.env.test
+
+# Vite
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*

.npmrc

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+engine-strict=true

.prettierignore

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+# Package Managers
+package-lock.json
+pnpm-lock.yaml
+yarn.lock
+bun.lock
+bun.lockb

.prettierrc

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+{
+	"useTabs": true,
+	"singleQuote": true,
+	"trailingComma": "none",
+	"printWidth": 100,
+	"plugins": ["prettier-plugin-svelte"],
+	"overrides": [
+		{
+			"files": "*.svelte",
+			"options": {
+				"parser": "svelte"
+			}
+		}
+	]
+}

README.md

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+# sv
+
+Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+
+## Creating a project
+
+If you're seeing this, you've probably already done this step. Congrats!
+
+```bash
+# create a new project in the current directory
+npx sv create
+
+# create a new project in my-app
+npx sv create my-app
+```
+
+## Developing
+
+Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+
+```bash
+npm run dev
+
+# or start the server and open the app in a new browser tab
+npm run dev -- --open
+```
+
+## Building
+
+To create a production version of your app:
+
+```bash
+npm run build
+```
+
+You can preview the production build with `npm run preview`.
+
+> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.

eslint.config.js

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+import prettier from 'eslint-config-prettier';
+import js from '@eslint/js';
+import { includeIgnoreFile } from '@eslint/compat';
+import svelte from 'eslint-plugin-svelte';
+import globals from 'globals';
+import { fileURLToPath } from 'node:url';
+import ts from 'typescript-eslint';
+import svelteConfig from './svelte.config.js';
+
+const gitignorePath = fileURLToPath(new URL('./.gitignore', import.meta.url));
+
+export default ts.config(
+	includeIgnoreFile(gitignorePath),
+	js.configs.recommended,
+	...ts.configs.recommended,
+	...svelte.configs.recommended,
+	prettier,
+	...svelte.configs.prettier,
+	{
+		languageOptions: {
+			globals: { ...globals.browser, ...globals.node }
+		},
+		rules: { 'no-undef': 'off' }
+	},
+	{
+		files: ['**/*.svelte', '**/*.svelte.ts', '**/*.svelte.js'],
+		languageOptions: {
+			parserOptions: {
+				projectService: true,
+				extraFileExtensions: ['.svelte'],
+				parser: ts.parser,
+				svelteConfig
+			}
+		}
+	}
+);

package.json

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+{
+	"name": "cards",
+	"private": true,
+	"version": "0.0.1",
+	"type": "module",
+	"scripts": {
+		"dev": "vite dev",
+		"build": "vite build",
+		"preview": "vite preview",
+		"prepare": "svelte-kit sync || echo ''",
+		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+		"format": "prettier --write .",
+		"lint": "prettier --check . && eslint ."
+	},
+	"devDependencies": {
+		"@eslint/compat": "^1.2.5",
+		"@eslint/js": "^9.18.0",
+		"@sveltejs/adapter-auto": "^6.0.0",
+		"@sveltejs/kit": "^2.16.0",
+		"@sveltejs/vite-plugin-svelte": "^5.0.0",
+		"eslint": "^9.18.0",
+		"eslint-config-prettier": "^10.0.1",
+		"eslint-plugin-svelte": "^3.0.0",
+		"globals": "^16.0.0",
+		"prettier": "^3.4.2",
+		"prettier-plugin-svelte": "^3.3.3",
+		"svelte": "^5.0.0",
+		"svelte-check": "^4.0.0",
+		"typescript": "^5.0.0",
+		"typescript-eslint": "^8.20.0",
+		"vite": "^6.2.6"
+	},
+	"pnpm": {
+		"onlyBuiltDependencies": [
+			"esbuild"
+		]
+	}
+}

src/app.d.ts

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+// See https://svelte.dev/docs/kit/types#app.d.ts
+// for information about these interfaces
+declare global {
+	namespace App {
+		// interface Error {}
+		// interface Locals {}
+		// interface PageData {}
+		// interface PageState {}
+		// interface Platform {}
+	}
+}
+
+export {};

src/app.html

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+<!doctype html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8" />
+		<link rel="icon" href="%sveltekit.assets%/favicon.png" />
+		<meta name="viewport" content="width=device-width, initial-scale=1" />
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover">
+		<div style="display: contents">%sveltekit.body%</div>
+	</body>
+</html>

src/lib/Card.svelte

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+<script lang="ts">
+	interface Props {
+		id: number;
+		frontImage: string;
+		backImage: string;
+		flipped?: boolean;
+		x?: number;
+		y?: number;
+		zIndex?: number;
+		onMove?: (id: number, x: number, y: number) => void;
+		onClick?: (id: number) => void;
+		onDrop?: (id: number, x: number, y: number) => void;
+	}
+
+	let {
+		id,
+		frontImage,
+		backImage,
+		flipped = $bindable(false),
+		x = $bindable(0),
+		y = $bindable(0),
+		zIndex = $bindable(0),
+		onMove,
+		onClick,
+		onDrop
+	}: Props = $props();
+
+	let isDragging = $state(false);
+	let dragOffset = $state({ x: 0, y: 0 });
+	let dragStartPos = $state({ x: 0, y: 0 });
+	let hasMoved = $state(false);
+	let cardElement: HTMLDivElement;
+
+	function handleMouseDown(event: MouseEvent) {
+		if (event.button !== 0) return;
+		
+		isDragging = true;
+		hasMoved = false;
+		const rect = cardElement.getBoundingClientRect();
+		dragOffset = {
+			x: event.clientX - rect.left,
+			y: event.clientY - rect.top
+		};
+		dragStartPos = {
+			x: event.clientX,
+			y: event.clientY
+		};
+		
+		event.preventDefault();
+	}
+
+	function handleMouseMove(event: MouseEvent) {
+		if (!isDragging) return;
+		
+		const deltaX = Math.abs(event.clientX - dragStartPos.x);
+		const deltaY = Math.abs(event.clientY - dragStartPos.y);
+		
+		if (deltaX > 10 || deltaY > 10) {
+			hasMoved = true;
+		}
+		
+		const newX = event.clientX - dragOffset.x;
+		const newY = event.clientY - dragOffset.y;
+		
+		x = newX;
+		y = newY;
+		
+		onMove?.(id, newX, newY);
+	}
+
+	function handleMouseUp() {
+		if (isDragging) {
+			onDrop?.(id, x, y);
+		}
+		isDragging = false;
+	}
+
+	function handleClick(event: MouseEvent) {
+		if (!hasMoved) {
+			flipped = !flipped;
+			onClick?.(id);
+		}
+	}
+
+	$effect(() => {
+		if (isDragging) {
+			document.addEventListener('mousemove', handleMouseMove);
+			document.addEventListener('mouseup', handleMouseUp);
+			return () => {
+				document.removeEventListener('mousemove', handleMouseMove);
+				document.removeEventListener('mouseup', handleMouseUp);
+			};
+		}
+	});
+</script>
+
+<div
+	bind:this={cardElement}
+	class="card"
+	class:flipped
+	class:dragging={isDragging}
+	style="left: {x}px; top: {y}px; z-index: {zIndex};"
+	onmousedown={handleMouseDown}
+	onclick={handleClick}
+	role="button"
+	tabindex="0"
+>
+	<div class="card-inner">
+		<div class="card-front">
+			<img src={frontImage} alt="Card front" />
+		</div>
+		<div class="card-back">
+			<img src={backImage} alt="Card back" />
+		</div>
+	</div>
+</div>
+
+<style>
+	.card {
+		position: absolute;
+		width: 220px;
+		height: 300px;
+		cursor: pointer;
+		perspective: 1000px;
+		user-select: none;
+	}
+
+	.card.dragging {
+		cursor: grabbing;
+		z-index: 1000 !important;
+	}
+
+	.card-inner {
+		position: relative;
+		width: 100%;
+		height: 100%;
+		text-align: center;
+		transition: transform 0.6s;
+		transform-style: preserve-3d;
+	}
+
+	.card.flipped .card-inner {
+		transform: rotateY(180deg);
+	}
+
+	.card-front,
+	.card-back {
+		position: absolute;
+		width: 100%;
+		height: 100%;
+		backface-visibility: hidden;
+		border-radius: 27px;
+		overflow: hidden;
+		box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
+	}
+
+	.card-front {
+		background: white;
+	}
+
+	.card-back {
+		transform: rotateY(180deg);
+		background: white;
+	}
+
+	.card img {
+		width: 100%;
+		height: 100%;
+		object-fit: cover;
+		border-radius: 30px;
+	}
+
+	.card:hover {
+		transform: translateY(-2px);
+		transition: transform 0.2s ease;
+	}
+
+	.card.dragging:hover {
+		transform: none;
+	}
+</style>

src/lib/index.ts

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+// place files you want to import through the `$lib` alias in this folder.

src/routes/+page.svelte

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+<script lang="ts">
+	import Card from '$lib/Card.svelte';
+
+	interface CardData {
+		id: number;
+		frontImage: string;
+		flipped: boolean;
+		x: number;
+		y: number;
+		zIndex: number;
+		inDeck: boolean;
+	}
+
+	const cardImages = Array.from({ length: 14 }, (_, i) => `front${i + 1}.png`);
+	const backImage = 'back.png';
+
+	let deckPosition = $state({ x: 50, y: 300 });
+
+	let cards = $state<CardData[]>(
+		cardImages.map((image, index) => ({
+			id: index + 1,
+			frontImage: image,
+			flipped: true,
+			x: deckPosition.x + index * 2,
+			y: deckPosition.y + index * 2,
+			zIndex: index,
+			inDeck: true
+		}))
+	);
+	let maxZIndex = $state(cards.length);
+
+	function handleCardMove(id: number, x: number, y: number) {
+		const card = cards.find(c => c.id === id);
+		if (card) {
+			card.x = x;
+			card.y = y;
+			card.zIndex = ++maxZIndex;
+		}
+	}
+
+	function handleCardDrop(id: number, x: number, y: number) {
+		const card = cards.find(c => c.id === id);
+		if (card) {
+			// Check if card is dropped on deck area
+			if (
+				x >= deckPosition.x && 
+				x <= deckPosition.x + 220 && 
+				y >= deckPosition.y && 
+				y <= deckPosition.y + 300 &&
+				!card.inDeck
+			) {
+				// Move card to top of deck
+				const deckCards = cards.filter(c => c.inDeck);
+				const topZ = deckCards.length > 0 ? Math.max(...deckCards.map(c => c.zIndex)) + 1 : 0;
+				
+				card.x = deckPosition.x + topZ * 2;
+				card.y = deckPosition.y + topZ * 2;
+				card.zIndex = topZ;
+				card.flipped = true;
+				card.inDeck = true;
+			} else if (card.inDeck) {
+				// Card was moved out of deck
+				card.inDeck = false;
+			}
+		}
+	}
+
+	function handleCardClick(id: number) {
+		const card = cards.find(c => c.id === id);
+		if (card) {
+			card.zIndex = ++maxZIndex;
+		}
+	}
+
+	function shuffleDeck() {
+		const deckCards = cards.filter(card => card.inDeck);
+		if (deckCards.length === 0) return;
+		
+		for (let i = deckCards.length - 1; i > 0; i--) {
+			const j = Math.floor(Math.random() * (i + 1));
+			[deckCards[i], deckCards[j]] = [deckCards[j], deckCards[i]];
+		}
+
+		deckCards.forEach((card, index) => {
+			card.x = deckPosition.x + index * 2;
+			card.y = deckPosition.y + index * 2;
+			card.zIndex = index;
+			card.flipped = true;
+		});
+	}
+
+	function collectToDeck() {
+		cards.forEach((card, index) => {
+			card.x = deckPosition.x + index * 2;
+			card.y = deckPosition.y + index * 2;
+			card.zIndex = index;
+			card.flipped = true;
+			card.inDeck = true;
+		});
+	}
+
+	function dealCards() {
+		cards.forEach((card, index) => {
+			card.x = 50 + (index % 6) * 240;
+			card.y = 50 + Math.floor(index / 6) * 320;
+			card.zIndex = index;
+			card.flipped = false;
+			card.inDeck = false;
+		});
+	}
+
+	function flipAllCards() {
+		cards.forEach(card => {
+			card.flipped = !card.flipped;
+		});
+	}
+</script>
+
+<div class="game-container">
+	<div class="controls">
+		<button onclick={collectToDeck}>Collect to Deck</button>
+		<button onclick={shuffleDeck}>Shuffle Deck</button>
+		<button onclick={dealCards}>Deal Cards</button>
+		<button onclick={flipAllCards}>Flip All</button>
+	</div>
+
+	<div class="game-area">
+		{#each cards as card (card.id)}
+			<Card
+				{...card}
+				backImage={backImage}
+				bind:flipped={card.flipped}
+				bind:x={card.x}
+				bind:y={card.y}
+				bind:zIndex={card.zIndex}
+				onMove={handleCardMove}
+				onClick={handleCardClick}
+				onDrop={handleCardDrop}
+			/>
+		{/each}
+
+		<div 
+			class="deck-area" 
+			style="left: {deckPosition.x}px; top: {deckPosition.y}px;"
+		>
+			Deck
+		</div>
+	</div>
+</div>
+
+<style>
+	.game-container {
+		width: 100vw;
+		height: 100vh;
+		overflow: hidden;
+		background: #161616;
+		font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+	}
+
+	.controls {
+		position: fixed;
+		top: 20px;
+		right: 20px;
+		display: flex;
+		gap: 10px;
+		z-index: 2000;
+	}
+
+	.controls button {
+		padding: 10px 15px;
+		background: rgba(255, 255, 255, 0.9);
+		border: none;
+		border-radius: 27px;
+		cursor: pointer;
+		font-weight: 600;
+		transition: all 0.2s ease;
+		box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+	}
+
+	.controls button:hover {
+		background: white;
+		transform: translateY(-1px);
+		box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
+	}
+
+	.game-area {
+		position: relative;
+		width: 100%;
+		height: 100%;
+	}
+
+	.deck-area {
+		position: absolute;
+		width: 220px;
+		height: 300px;
+		border: 3px dashed rgba(255, 255, 255, 0.5);
+		border-radius: 25px;
+		display: flex;
+		align-items: center;
+		justify-content: center;
+		color: rgba(255, 255, 255, 0.7);
+		font-weight: bold;
+		background: rgba(255, 255, 255, 0.1);
+		backdrop-filter: blur(10px);
+	}
+</style>

svelte.config.js

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+import adapter from '@sveltejs/adapter-auto';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	// Consult https://svelte.dev/docs/kit/integrations
+	// for more information about preprocessors
+	preprocess: vitePreprocess(),
+
+	kit: {
+		// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
+		// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
+		// See https://svelte.dev/docs/kit/adapters for more information about adapters.
+		adapter: adapter()
+	}
+};
+
+export default config;

tsconfig.json

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+{
+	"extends": "./.svelte-kit/tsconfig.json",
+	"compilerOptions": {
+		"allowJs": true,
+		"checkJs": true,
+		"esModuleInterop": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true,
+		"moduleResolution": "bundler"
+	}
+	// Path aliases are handled by https://svelte.dev/docs/kit/configuration#alias
+	// except $lib which is handled by https://svelte.dev/docs/kit/configuration#files
+	//
+	// If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
+	// from the referenced tsconfig.json - TypeScript does not merge them in
+}

vite.config.ts

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+import { sveltekit } from '@sveltejs/kit/vite';
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+	plugins: [sveltekit()]
+});