bevy_spatial

A bevy plugin to track your entities in spatial indices and query them.

Currently implemented features:

Feature	Description
kdtree (default)	KD-Tree for spatial lookups which is fully recreated on update, but fast to recreate. Works well in most situations.

use bevy_spatial::{AutomaticUpdate, KDTree3, TransformMode, SpatialAccess};

#[derive(Component, Default)]
struct TrackedByKDTree;

fn main() {
    App::new()
        .add_plugins(AutomaticUpdate::<TrackedByKDTree>::new()
            .with_frequency(Duration::from_secs_f32(0.3))
            .with_transform(TransformMode::GlobalTransform))
        .add_systems(Update, use_neighbour);
    // ...
}

type NNTree = KDTree3<TrackedByKDTree>; // type alias for later

// spawn some entities with the TrackedByKDTree component

fn use_neighbour(tree: Res<NNTree>){
    if let Some((pos, entity)) = tree.nearest_neighbour(Vec3::ZERO) {
        // pos: Vec3
        // do something with the nearest entity here
    }
}

For more details on usage see Examples

compatible bevy versions

bevy	bevy_spatial
0.16	0.11.0
0.15	0.10.0
0.14	0.9.1
0.13	0.8.0
0.12	0.7.0
0.11	0.6.0
0.10	0.5.0
0.9	0.4.0
0.8	0.3.0
0.8	0.2.1
0.7	0.1

wasm caveats: Since the rayon acceleration for kdtree is enabled by default, but rayon doesn't work on wasm, for projects targeting wasm you'll need to disable default features for bevy-spatial and re-enable kdtree