Crate bevy_sparse_grid_2d
source ·Expand description
§bevy_sparse_grid_2d
An opinionated 2D sparse grid made for use with Bevy. For storing and querying entities.
Personally, I’m using it for simple stupid collision broad phase in a couple of my projects.
§Usage
use bevy::{
math::{bounding::Aabb2d, vec2},
prelude::*,
utils::HashSet,
};
use bevy_sparse_grid_2d::SparseGrid2d;
const TILE_SIZE: usize = 1; // how wide each cell is
let mut db = SparseGrid2d::<TILE_SIZE>::default();
let e1 = Entity::from_raw(1);
let e2 = Entity::from_raw(2);
db.insert_point(vec2(0.5, 0.5), e1);
db.insert_point(vec2(0.499, 0.501), e2);
// query a single point
let matches: HashSet<_> = db.point_iter(vec2(0.499, 0.501)).collect();
assert!(matches.contains(&e1));
assert!(matches.contains(&e2));
assert_eq!(matches.len(), 2);
// query an aabb
let aabb = Aabb2d::new(Vec2::new(0.001, 0.001), Vec2::new(0.001, 0.001));
let matches = db.query_aabb(aabb);
assert!(matches.contains(&e1));
assert!(matches.contains(&e2));
assert_eq!(matches.len(), 2);
See tests in lib.rs
§Bevy Version Support
The main
branch targets the latest bevy release.
bevy | bevy_sparse_grid_2d |
---|---|
0.14 | 0.5, main |
0.13 | 0.4 |
0.12 | 0.3 |
0.11 | 0.2 |
0.10 | 0.1 |
§License
MIT or Apache-2.0
§Contributions
PRs welcome!
Structs§
- A spatial container that allows querying for entities that share one or more grid cell