godot-rust v0.5 -- typed dicts, tool buttons, #[opt] and much more!

godot-rust goes into the next round with v0.5, just released on crates.io!

On the toolchain side:

• We now support Rust edition 2024 and Godot 4.6 out of the box, as well as all versions >= 4.2.
• WebAssembly support no longer needs LLVM/bindgen and is being unit-tested on CI.
• It's now possible to depend on other godot-rust crates through rlib.

Some features added in this cycle:

Typed dictionary. Also, enums in Godot collections!

let tiles: Dictionary<Vector2i, Tile> = dict! {
   Vector2i::new(1, 2) => Tile::GRASS,
   Vector2i::new(1, 3) => Tile::WATER,
};

Non-null engine APIs:

// Instead of...
let t: Gd<Tween> = node.create_tween().unwrap();
// ...now:
let t: Gd<Tween> = node.create_tween();

Direct == &str comparison, saving allocation:

let s = StringName::from("hello");
if s == "hello" { ... }

Bitfield Debug impl:

assert_eq!(
    format!("{flags:?}"),
    "PropertyUsageFlags { EDITOR | READ_ONLY }"
);

Optional parameters -- call from GDScript as method(1) or method(1, 2):

#[func]
fn method(
    required: i32,
    #[opt(default = 100)] optional: i32,
) { ... }

Export tool button -- click in Godot's inspector to immediately execute Rust code:

#[export_tool_button(fn = Self::on_clicked, icon = "2DNodes")]
click_me: PhantomVar<Callable>, // not a physical property

We now also have a Games page showcasing projects that users made with godot-rust! And I'm still behind on adding new entries there :)

Huge thanks to the community for making this possible! Countless bug reports, PRs, and feedback based on real-world projects have helped godot-rust immensely to reach this point.

If you like the project, consider giving us a star on GitHub. As it's maintained entirely in free time without any financial backing, small GitHub Sponsor contributions are also very appreciated (e.g. to my co-maintainers Yarwin or TitanNano). Thanks to everyone supporting the project -- I'm excited to see what will be built on v0.5!