# Chessfield

![Chessfield views](https://raw.githubusercontent.com/unicolored/chessfield/main/screenshot/views.jpg)

_Chessfield_ is a free/libre open source chess 3D board.

[![Continuous Integration](https://github.com/unicolored/chessfield/actions/workflows/ci.yml/badge.svg)](https://github.com/unicolored/chessfield/actions/workflows/ci.yml)
[![Continuous Integration](https://github.com/unicolored/chessfield/actions/workflows/publish.yml/badge.svg)](https://github.com/unicolored/chessfield/actions/workflows/publish.yml)
[![npm version](https://badge.fury.io/js/chessfield.svg)](https://www.npmjs.com/chessfield)

> **This project is made possible** thanks to the work going into https://github.com/lichess-org/chessground.

## License

Chessfield is distributed under the **GPL-3.0 license** (or any later version,
at your option).
When you use Chessfield for your website, your combined work may be
distributed only under the GPL. **You must release your source code** to the
users of your website.

Please read more about GPL for JavaScript on [greendrake.info](https://greendrake.info/publications/js-gpl).

## Demos

- [Chessfield docs](https://unicolo.red/chessfield/)

## Features

Chessfield is designed to be a 3d chess viewer.

- Common configuration options with [Chessground](https://github.com/lichess-org/chessground)
- Royalty free wooden chess set by 3D Artist: [Ali Qolami](https://www.blenderkit.com/asset-gallery?query=order:-score+author_id:1118431)
- Well typed with TypeScript
- WebGL powered by Three.js
- Zoom and rotate around the board to see games in a any angle
- Display FEN and highlight squares of the last move

## Installation

```sh
npm install --save chessfield
```

### Usage

```js
import { Chessfield } from 'chessfield';

// Add and use a custom theme
const config = {
  plugins: {
    themes: {
      mytheme: {
        light: '#e3dbc9',
        dark: '#cb4444',
        highlight: '#c99a39',
        selected: 'orange',
      },
    },
  },
  theme: 'mytheme',
  camera: 'white',
  angle: 'right',
};

const field = Chessfield(document.body, config);
```

## Documentation

- [Config types](https://github.com/unicolored/chessfield/tree/main/src/resource/chessfield.config.ts)
- [Default config values](https://github.com/unicolored/chessfield/tree/main/src/resource/chessfield.state.ts)
- [API type signatures](https://github.com/unicolored/chessfield/tree/main/src/resource/chessfield.api.ts)
- [Simple standalone example](https://github.com/unicolored/chessfield/tree/main/demo.html)
- [Read more](https://unicolo.red/chessfield/)

## Development

Install build dependencies:

```sh
pnpm install
```

To build the node module:

```sh
pnpm run dev
```

To build the standalone:

```sh
pnpm run dist
```