Flutter-Raylib

Simple proof of concept for creating a raylib context alongside a flutter application. Currently (seemingly) stable.

How?

Create a child isolate that holds a raylib context then pass data to the child from the parent isolate (currently just the cube color).

The child isolate's main game loop has await Future.delayed(const Duration(milliseconds: 0)); to make the loop run asynchronously so onData can actually handle messages. If there is a better way to do this please let me know.

Why?

For the purpose of visualizing a robotic arm in 3D alongside our current dashboard (Binghamton University Rover Team). Similar to ros2/rvis. Raylib is cross platform and has a simple API, there were also resources already in place to keep everything in dart (shoutout Jochum van der Ploeg).

Incorporating the creation of a raylib window directly a flutter program means we don't have to have a separate executable somewhere on disk to run with dart's process library.

Cloning the Repository

git clone https://github.com/payl-ampa/flutter-raylib
cd flutter-raylib
git submodule update --init
# git submodule update --init --recursive if you want to raylib's C code in dart-raylib

Running the Project

cd flrl_v1
flutter run

Unfortuately, dart-raylib only supports windows and linux, if you have any problems please open up a github issue and I can take a look.

Credits

Jochum van der Ploeg - dart-raylib bindings

Levi Lesches - typed_isolate *note. I am using a modified version of this library, so there may be discrepancies

Jacob Bang - helped out tremendously in the dart discord

Previous Bugs

Fixed by Jacob Bang

• Invalid argument(s): No child isolate found with id=rlIsolate - Child isolate's cube no longer changes color
• rlCanCreateContext is never set back to true after the closing of the 2nd window

Notes

I might be updating the dart-raylib bindings to raylib 5.0 if I have time this summer, it has a couple of quality of life features and api changes that are worth the upgrade.

Raylib doesn't support quads out of the box, so I may also be updating the assimp bindings, but that looks like significantly more work since ill be going from c++ to dart.