bevy_easy_config 0.1.0

use bevy::prelude::*;
use bevy_easy_config::EasyConfigPlugin;
use serde::Deserialize;


fn main() {
    App::new()
        .add_plugins((
            DefaultPlugins,
            // Adds the settings struct as a resource, and loads it from "assets/settings.ron"
            EasyConfigPlugin::<Settings>::new("settings.ron")
        ))
        .add_systems(Update, print_on_keypress)
        .run();
}


/* The config struct must implement:
    - Deserialize, 
    - Asset,
    - Resource, 
    - Clone,
    - TypePath
    and it must also implement Default.
    All traits except default can simply be implemented with #[derive()] 
*/
#[derive(Deserialize, Asset, Resource, Clone, TypePath)]
struct Settings {
    action_keybind: KeyCode
}

/*
This is the default state that the struct will be loaded in.

Until the Asset part of the struct is loaded properly,
the struct will have the values that are implemented in default.

When the asset is finished loading, the values from whatever file
that is being loaded will replace the values from 'Default'
*/
impl Default for Settings {
    fn default() -> Self {
        Self {
            action_keybind: KeyCode::Space
        }
    }
}


fn print_on_keypress(
    settings: Res<Settings>,
    keyboard: Res<ButtonInput<KeyCode>>,
) {
    // Accessing the resource is just like if you have a normal resoruce,
    // except it also hot reloads whenever the file it is loaded from is saved. 
    if keyboard.just_pressed(settings.action_keybind) {
        println!("You pressed: {:#?}", settings.action_keybind)
    }
}