带有libretro、awt和sdl2前端的免费J2ME模拟器。.zip

# freej2me  A free J2ME emulator with libretro, awt and sdl2 frontends. Authors : - David Richardson [Recompile@retropie] - Saket Dandawate [Hex@retropie] --- ## Controls * `Q` and `W` for left and right softkeys. * Arrow keys for nav, unless phone is set to "Standard", when arrow keys become 2, 4, 6, and 8. * Numbers work as expected, the number pad is inverted (123 swap with 789, like a phone) * `E` and `R` are alternatives to `*` and `#`. * Enter functions as the Fire key or `5` on "Standard" mode * ESC brings up the settings menu * In the AWT frontend (freej2me.jar) `Ctrl+C` takes a screenshot and `+`/`-` can be used to control the window scaling factor Click [here](KEYMAP.md) for information about more keybindings ## Links Screenshots: https://imgur.com/a/2vAeC Discussion/Support thread: https://retropie.org.uk/forum/topic/13084/freej2me-support-thread Development thread: https://retropie.org.uk/forum/topic/11441/would-you-like-to-play-nokia-j2me-games-on-retropie/ ---- **FreeJ2ME Jar Compilation:** >From the root directory, running the following commands: >``` > > cd freej2me/ > > ant >``` > Will create three different jar files inside `build/`: > > `freej2me.jar` -> Standalone AWT jar executable > > `freej2me-lr.jar` -> Libretro executable (has to be placed on the frontend's `system/` folder, since it acts as a BIOS for the libretro core and runs J2ME jars) > >`freej2me-sdl.jar` -> Jar executable meant to be used in conjunction with SDL2 > >Both the Libretro and SDL2 jar files need additional binaries to be compiled before use. Look at the additional steps below if you're going to use one of them. **Building the SDL2 binary:** > >To build the SDL2 binary, run the following commands from the root directory: > ``` > # SDL2 binary compilation > > cd src/sdl2 > > make > > make install > ``` > > SDL2 allows FreeJ2ME to run on a Raspberry Pi. **Building the Libretro core (Not working on Windows as of yet):** > >To build the libretro core, run the following commands from the root directory: >``` ># libretro core compilation > > cd src/libretro > > make >``` >This will build `freej2me_libretro.so` on `src/libretro/`, which is the core libretro will use to interface with `freej2me-lr.jar`. > >Move it to your libretro frontend's `cores/` folder, with freej2me-lr.jar on `system/` and the frontend should be able to load j2me files afterwards. > >NOTE: The core DOES NOT WORK on containerized/sandboxed environments unless it can call a java runtime that also resides in the same sandbox or container, keep that in mind if you're running a libretro frontend through something like flatpak or snap for example. ---- **Usage (applies to AWT and SDL):** Launching the AWT frontend (freej2me.jar) will bring up a filepicker to select the MIDlet to run. Alternatively it can be launched from the command line: `java -jar freej2me.jar 'file:///path/to/midlet.jar' [width] [height] [scale]` Where _width_, _height_ (dimensions of the simulated screen) and _scale_ (initial scale factor of the window) are optional arguments. The SDL2 frontend (freej2me-sdl.jar) accepts the same command-line arguments format, aside from the _scale_ option which is unavailable. When running under Microsoft Windows please do note paths require an additional `/` prefixed. For example, `C:\path\to\midlet.jar` should be passed as `file:///C:\path\to\midlet.jar` FreeJ2ME keeps savedata and config at the working directory it is run from. Currently any resolution specified at the config file takes precedence over the values passed via command-line. --- **How to contribute as a developer:** 1) Open an Issue 2) Try solving that issue 3) Post on the Issue if you have a possible solution 4) Submit a PR implementing the solution **If you are not a developer:** 1) Post on discussion thread only **Roadmap:** - Get as many games as possible to work well. - Document games that work well in the wiki - Reduce as many bugs as possible