cargo add vleue_navigator

use vleue_navigator::prelude::*;

fn main() {
    App::new()
        .add_plugins((
            DefaultPlugins,
            VleueNavigatorPlugin,
            // Auto update navmesh using the `Aabb` component
            NavmeshUpdaterPlugin::::default(),
        ))
        ...
        .run();
}

fn spawn_navmesh(mut commands: Commands) {
    commands.spawn(NavMeshBundle {
        settings: NavMeshSettings {
            // Define the outer borders of the navmesh.
            fixed: Triangulation::from_outer_edges(&[
                vec2(0.0, 0.0), vec2(10.0, 0.0),
                vec2(10.0, 10.0), vec2(0.0, 10.0),
            ]),
            ..default()
        },
        // Mark it for update as soon as obstacles are changed.
        // Other modes available are debounced or manually triggered.
        update_mode: NavMeshUpdateMode::Direct,
        ..NavMeshBundle::with_default_id()
    });
}

pub fn find_path(navmeshes: Res>, navmesh: Query<(&Handle, Ref)>) {
    let (navmesh_handle, status) = navmesh.single();
    if status != NavMeshStatus::Built {
        // NavMesh is not ready yet.
        return;
    }
    if let Some(navmesh) = navmeshes.get_mut(navmesh_handle) {
        let mut rng = rand::thread_rng();
        let from = vec2(rng.gen_range(0.0..10.0), rng.gen_range(0.0..10.0));
        let to = vec2(rng.gen_range(0.0..10.0), rng.gen_range(0.0..10.0));

        if let Some(path) = navmesh.path(from, to) {
            info!("found path from {:?} to {:?}: {:?}", from, to, path);
        } else {
            info!("no path found from {:?} to {:?}", from, to);
        }
    }
}