Can I have ECS and Threadpool without GUI?

[Wandalen]

Hello! I appreciate the fantastic open-source work you've done!

I've managed to isolate the necessary plugins to run my application without a window. However, in this configuration, the Update systems are only called once. To have them executed on each frame, I've found that I need to include the WindowPlugin, which is something I'd like to avoid. Is there a way to have recurring Update calls without adding all the plugins that I don't require in my specific case?

    .add_plugins( bevy::core::TaskPoolPlugin::default() )
    .add_plugins( bevy::time::TimePlugin::default() )
    .add_plugins( bevy::core::FrameCountPlugin::default() )
    .add_plugins( bevy::input::InputPlugin::default() )
    .add_plugins( bevy::window::WindowPlugin::default() )
    .add_plugins( bevy::a11y::AccessibilityPlugin )

[hymm]

You can use ScheduleRunnerPlugin::run_loop(x). https://docs.rs/bevy/latest/bevy/app/struct.ScheduleRunnerPlugin.html

[ItsDoot]

The MinimalPlugins PluginGroup provides you with a headless runtime, which includes a schedule runner via the ScheduleRunnerPlugin.

Example Usage:

use bevy::prelude::*;

fn main() {
    App::new()
        .add_plugins(MinimalPlugins)
        .add_systems(Update, my_system)
        .run();
}

fn my_system(counter: Local<u32>) {
    *counter += 1;
    println!("Counter: {}", *counter);
}

[Wandalen]

Awesome! That works ❤️