Custom mainloop can't work

[Hapenia-Lans]

Custom mainloop can't work properly. Refers to this issue. kleonc's solution can work with gdscript mainloop, but rust's failed.

The minimal reproduction project is in the linked issue above. And the rust part is simply add these:

Here is my_main_loop.rs:

use godot::prelude::*;

#[derive(GodotClass, Debug)]
#[class(base=SceneTree)]
pub struct MyMainLoop {
    #[base]
    base: Base<SceneTree>,
}

#[godot_api]
impl MyMainLoop {
    #[func]
    fn say_hello(&self) {
        godot::prelude::godot_print!("hello world!");
    }
}

#[godot_api]
impl GodotExt for MyMainLoop {

}

Here lib.rs:

use godot::prelude::*;

struct ExtMain;

mod my_mainloop;

#[gdextension]
unsafe impl ExtensionLibrary for ExtMain {}

[Hapenia-Lans]

My guess is that there was something wrong in the class registration or binding process.

[Bromeon]

Just to clarify: there is nothing that godot-rust could do here, right?
We need to wait for an fix in Godot itself?

[Bromeon]

@Hapenia-Lans any answer to my question above? 🙂

[Hapenia-Lans]

Closed. Something went wrong if you don't override init() function. Add the code below can fix this. Maybe it should be another issue.

#[godot_api]
impl GodotExt for MyMainLoop {
    fn init(base: Base<SceneTree>) -> Self {
        Self { base }
    }
}