mirror of
https://github.com/eliasstepanik/big_space_with_trim.git
synced 2026-01-11 23:08:29 +00:00
66295948bf
Implements spatial hashing, to performantly run distance checks, find all entities located in the same cell, or neighboring cells.
53 lines
1.6 KiB
Rust
53 lines
1.6 KiB
Rust
//! Big spaces are infinite, looping back on themselves smoothly.
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use bevy::prelude::*;
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use big_space::prelude::*;
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fn main() {
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App::new()
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.add_plugins((
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DefaultPlugins,
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BigSpacePlugin::<i8>::default(),
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FloatingOriginDebugPlugin::<i8>::default(), // Draws cell AABBs and grids
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big_space::camera::CameraControllerPlugin::<i8>::default(), // Compatible controller
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))
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.add_systems(Startup, setup_scene)
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.run();
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}
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fn setup_scene(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<StandardMaterial>>,
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) {
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let sphere = Mesh3d(meshes.add(Sphere::default()));
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let matl = MeshMaterial3d(materials.add(Color::WHITE));
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commands.spawn_big_space::<i8>(Grid::default(), |root_grid| {
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let width = || -8..8;
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for (x, y, z) in width()
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.flat_map(|x| width().map(move |y| (x, y)))
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.flat_map(|(x, y)| width().map(move |z| (x, y, z)))
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{
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root_grid.spawn_spatial((
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sphere.clone(),
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matl.clone(),
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GridCell::<i8> {
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x: x * 16,
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y: y * 16,
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z: z * 16,
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},
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));
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}
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root_grid.spawn_spatial(DirectionalLight::default());
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root_grid.spawn_spatial((
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Camera3d::default(),
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Transform::from_xyz(0.0, 0.0, 10.0),
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FloatingOrigin,
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big_space::camera::CameraController::default()
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.with_speed(10.)
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.with_smoothness(0.99, 0.95),
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));
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});
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}
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