# [Boytacean](https://boytacean.joao.me) A Game Boy emulator that is written in Rust 🦀. **This emulator has been written for educational purposes and shouldn't be taken too seriously.** But yeahh it plays most Game Boy games, which is cool... 🕹️ ## Features * Game Boy (DMG) and Game Boy Color (CGB) emulation * Simple navigable source-code * Web, [SDL](https://www.libsdl.org) and [Libretro](https://www.libretro.com) front-ends * Audio, with a pretty accurate APU * Serial Data Transfer ([Link Cable](https://en.wikipedia.org/wiki/Game_Link_Cable)) support * [Game Boy Printer](https://en.wikipedia.org/wiki/Game_Boy_Printer) emulation * Support for multiple MBCs: MBC1, MBC2, MBC3, and MBC5 * Save state support using the [BESS Specification](https://github.com/LIJI32/SameBoy/blob/master/BESS.md) for cross-compatibility with other emulators * Cheat support using [Game Genie](https://en.wikipedia.org/wiki/Game_Genie) and [GameShark](https://pt.wikipedia.org/wiki/GameShark) codes * Variable CPU clock speed * Accurate PPU - passes [dmg-acid2](https://github.com/mattcurrie/dmg-acid2) and [cgb-acid2](https://github.com/mattcurrie/cgb-acid2) tests For the Web front-end... * Mobile first experience * Transparent RAM saving using [Web Storage API](https://developer.mozilla.org/docs/Web/API/Window/localStorage) * GamePad support using [Web Gamepad API](https://developer.mozilla.org/docs/Web/API/Gamepad_API) * Unobstructive and effective on-screen GamePad * Rumble emulation and haptic feedback * Cool bespoke display palettes built by [TheWolfBunny64](https://www.deviantart.com/thewolfbunny). * Fullscreen browser mode * Debug mode - VRAM and registers What's still missing... * Low-level cycle accurate system emulation * [Game Boy Camera](https://en.wikipedia.org/wiki/Game_Boy_Camera) emulation * NetPlay gaming support ## Deployments | Provider | Stable | URL | | ---------- | ------- | ---------------------------------------------------------------- | | Cloudflare | `True` | [boytacean.joao.me](https://boytacean.joao.me) | | Cloudflare | `True` | [boytacean.pages.dev](https://boytacean.pages.dev) | | Cloudflare | `True` | [prod.boytacean.pages.dev](https://prod.boytacean.pages.dev) | | Cloudflare | `True` | [stable.boytacean.pages.dev](https://stable.boytacean.pages.dev) | | Cloudflare | `False` | [master.boytacean.pages.dev](https://master.boytacean.pages.dev) | ## Build ### Library ```bash cargo build ``` ### Python Library ```bash pip install . ``` or ```bash python setup.py install ``` ### WASM for Node.js ```bash cargo install wasm-pack wasm-pack build --release --target=nodejs -- --features wasm ``` ### WASM for Web ```bash cargo install wasm-pack wasm-pack build --release --target=web --out-dir=frontends/web/lib -- --features wasm cd frontends/web npm install && npm run build cd dist && python3 -m http.server ``` ## Web front-end The Web front-end makes use of [EmuKit](https://github.com/joamag/emukit) which is a UI toolkit that provides the required infrastructure for the creation of interfaces for emulation in a Web context. ### Configuration You can use some GET parameters to control the initial behavior of the emulator. | Parameter | Type | Description | | ------------ | ------- | ---------------------------------------------------------------------------------------------- | | `rom_url` | String | The URL from which the initial ROM is going to be loaded, should support CORS. | | `url` | String | The same as `rom_url`. | | `fullscreen` | Boolean | If the emulator should start in fullscreen mode. | | `fs` | Boolean | The same as `fullscreen`. | | `debug` | Boolean | If the "debugger" should start visible and information shown in `verbose` mode. | | `verbose` | Boolean | If information should be shown in verbose mode. | | `keyboard` | Boolean | If the on-screen keyboard should start visible. | | `palette` | String | The name of the palette to be set at startup( eg: `christmas`, `hogwards`, `mariobros`, etc.). | ## Palettes The palettes offered in the web version were provided by [TheWolfBunny64](https://www.deviantart.com/thewolfbunny). ## Inspiration To get some information about the resources that inspired me through the emulation creation journey check [Inspiration](doc/inspiration.md). ## Contributing Love Gameboy emulation? Want to contribute to Boytacean? That's awesome! Your contributions are what make the open-source community such an amazing place to learn, inspire, and create. To get started, please take a look at our [Contributing Guidelines](CONTRIBUTING.md). Whether you're fixing bugs, adding new features, or helping with documentation, every contribution is valuable and greatly appreciated! Don't hesitate to reach out if you have any questions. Join us in making Boytacean the best Gameboy emulator out there! ## License Boytacean is currently licensed under the [Apache License, Version 2.0](http://www.apache.org/licenses/). ## Build Automation [![Build Status](https://github.com/joamag/boytacean/workflows/Main%20Workflow/badge.svg)](https://github.com/joamag/boytacean/actions) [![crates Status](https://img.shields.io/crates/v/boytacean)](https://crates.io/crates/boytacean) [![npm Status](https://img.shields.io/npm/v/boytacean.svg)](https://www.npmjs.com/package/boytacean) [![PyPi Status](https://img.shields.io/pypi/v/boytacean.svg)](https://pypi.python.org/pypi/boytacean) [![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://www.apache.org/licenses/)