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吾爱电玩/webretro

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README
MIT

webretro

RetroArch ported to WASM with emscripten!
Demo

This was initially part of gfiles, but I decided to split it off.

These 5 cores are included with the repository (ROMs NOT included):

  • Genesis Plus GX (Genesis / MD)
  • mGBA (GBA, GB, GBC)
  • Mupen64plus Next (N64, broken but playable)
  • Nestopia (NES)
  • Snes9x (SNES)

How to use

The asset bundle will be fetched from GitHub using jsdelivr by default. You can change this option on line 10 of assets/base.js (example alternate value: "./").

Query string options:

  • core - specify the libretro core to use, i.e. genesis_plus_gx, mgba, mupen64plus_next, nestopia, snes9x. autodetect can also be used, which attempts to find the correct core for the ROM (slower to load because the core is loaded after the ROM) (if not specified, the user will be shown a list of the default cores).
  • system - same as above, but will attempt to detect the core based on the specified system, i.e. gba, genesis, nes, nintendo 64, snes. If both core and system are specified, core will override system.
  • rom - will attempt to fetch a ROM from the ./roms/ directory on the server, or an absolute url (including protocol), e.g. mario3.nes (if not specified, the user will be prompted to upload a ROM).
  • nobundle if this exists, the bundle fetch will be skipped.
  • console if this exists, the console window will open on load.

Example OK query uris:

  • ?core=snes9x&rom=dkc.smc&nobundle&console
  • ?core=mgba&rom=https://example.com/marioadvance3.zip
  • ?core=autodetect&rom=supermarioworld.sfc
  • ?core=autodetect&nobundle
  • ?core=genesis_plus_gx
  • ?

Embed API

You can easily embed webretro on your site by using the api provided in embed/embed.js. You can see an example of it here.

How to use: webretroEmbed(domNodeToAppendTo, webretroPath, queries) (returns the new iframe node that it creates)

  • domNodeToAppendTo - the element that you want webretro to appear in.
  • webretroPath - the path to the index of the webretro instance.
  • queries - object containing the query string options shown above.

Additional

  • The user can upload their ROM directly, or using Google Drive/Dropbox/OneDrive.
  • Importing/Exporting of save states and SRAM is supported.
  • States and SRAM are saved to indexedDB per ROM name. (SRAM autosaves every 5 minutes by default)
  • ROMs can be inside of zip files (The ROM file name is used in this case, instead of the zip file name).
  • Cheat codes are supported.
  • SMAS brick fix should automatically be softpatched to SMAS ROMs.
  • The keybindings are remapped so that all the inputs should be supported by a normal keyboard, but can be changed on line 11 of assets/base.js: Controller Layout Map
MIT License Copyright (c) 2021 BinBashBanana Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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