bevy_ecs_ldtk 0.12.0

An ECS-friendly ldtk plugin for bevy.
Documentation 
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// This example uses the LevelSet component instead of the LevelSelection resource.
// The setup system puts several level iids in the LevelSet, so an entire LDtk world layer is
// spawned.
// See <https://trouv.github.io/bevy_ecs_ldtk/latest/explanation/level-selection.html>.
use bevy::prelude::*;
use bevy_ecs_ldtk::prelude::*;

use rand::prelude::*;

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(LdtkPlugin)
        .add_systems(Startup, setup)
        .add_systems(Update, toggle_levels)
        // No LevelSelection resource!
        .insert_resource(LdtkSettings {
            // By default, levels are just spawned at the origin of the world.
            // This makes them spawn according to their location in LDtk
            level_spawn_behavior: LevelSpawnBehavior::UseWorldTranslation {
                load_level_neighbors: false,
            },
            ..Default::default()
        })
        .run();
}

const LEVEL_IIDS: [&str; 8] = [
    "a3591db0-66b0-11ec-9cd7-43878cf4d0ab",
    "a35944c0-66b0-11ec-9cd7-6b4e2322a69e",
    "a35992e0-66b0-11ec-9cd7-8b2ebd1b98e2",
    "a359b9f0-66b0-11ec-9cd7-25dfb937d033",
    "a35a2f20-66b0-11ec-9cd7-db6f994e2834",
    "a35aa451-66b0-11ec-9cd7-438de356526d",
    "a35acb61-66b0-11ec-9cd7-f76e35cfda30",
    "a35b8eb0-66b0-11ec-9cd7-3d16ec48af10",
];

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
    commands.spawn(Camera2d);

    let level_set = LevelSet::from_iids(LEVEL_IIDS);

    commands.spawn(LdtkWorldBundle {
        ldtk_handle: asset_server.load("WorldMap_Free_layout.ldtk").into(),
        level_set,
        transform: Transform::from_xyz(-256., -144., 0.),
        ..Default::default()
    });
}

// This function is a demonstation that changes to the LevelSet have the expected results.
// Hit spacebar and watch what happens!
fn toggle_levels(input: Res<ButtonInput<KeyCode>>, mut level_sets: Query<&mut LevelSet>) -> Result {
    if input.just_pressed(KeyCode::Space) {
        let mut rng = rand::thread_rng();
        let level_to_toggle = LevelIid::new(*LEVEL_IIDS.choose(&mut rng).unwrap());

        let mut level_set = level_sets.single_mut()?;
        if level_set.iids.contains(&level_to_toggle) {
            level_set.iids.remove(&level_to_toggle);
        } else {
            level_set.iids.insert(level_to_toggle);
        }
    }
    Ok(())
}