bevy_scriptum/examples/lua/ecs.rs

use bevy::prelude::*;
use bevy_scriptum::prelude::*;
use bevy_scriptum::runtimes::lua::prelude::*;

#[derive(Component)]
struct Player;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_scripting::<LuaRuntime>(|runtime| {
            runtime.add_function(
                String::from("print_player_names"),
                |players: Query<&Name, With<Player>>| {
                    for player in &players {
                        println!("player name: {}", player);
                    }
                },
            );
        })
        .add_systems(Startup, startup)
        .run();
}

fn startup(mut commands: Commands, assets_server: Res<AssetServer>) {
    commands.spawn((Player, Name::new("John")));
    commands.spawn((Player, Name::new("Mary")));
    commands.spawn((Player, Name::new("Alice")));

    commands.spawn(Script::<LuaScript>::new(
        assets_server.load("examples/lua/ecs.lua"),
    ));
}