robert/another-boids-in-rust
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Crank up the forces to see the boids move!

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The Boids algorithm functions need a lot of work, but the cohesion and
separation functions appear to nominally perform their stated goal.

Both are constant forces across their whole range, so there is a jerking
motion as things cross in and out of the activation boundaries.

I think the alignment function breaks the laws of thermodynamics, as
well. Oh well, that's what the spacebrakes system is for.
This commit is contained in:
Robert Garrett
2024-07-11 17:00:12 -05:00
parent 32991d3e37
commit a161aacaca
1 changed files with 5 additions and 5 deletions
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10
src/birdoids_plugin.rs
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@@ -9,9 +9,9 @@ const BACKGROUND_COLOR: Color = Color::srgb(0.4, 0.4, 0.4);
const PLAYERBOID_COLOR: Color = Color::srgb(1.0, 0.0, 0.0); const PLAYERBOID_COLOR: Color = Color::srgb(1.0, 0.0, 0.0);
const TURN_FACTOR: f32 = 1.0; const TURN_FACTOR: f32 = 1.0;
const BOID_VIEW_RANGE: f32 = 50.0; const BOID_VIEW_RANGE: f32 = 50.0;
const COHESION_FACTOR: f32 = 1.0; const COHESION_FACTOR: f32 = 1000.0;
const SEPARATION_FACTOR: f32 = 1.0; const SEPARATION_FACTOR: f32 = 100.0;
const ALIGNMENT_FACTOR: f32 = 1.0; const ALIGNMENT_FACTOR: f32 = 500.0;
pub struct BoidsPlugin; pub struct BoidsPlugin;
@@ -81,10 +81,10 @@ fn spawn_boids(
mut meshes: ResMut<Assets<Mesh>>, mut meshes: ResMut<Assets<Mesh>>,
mut materials: ResMut<Assets<ColorMaterial>>, mut materials: ResMut<Assets<ColorMaterial>>,
) { ) {
let num_boids = 50; let num_boids = 1000;
for i in 0..num_boids { for i in 0..num_boids {
let frac = 2.0 * std::f32::consts::PI / (num_boids as f32) * (i as f32); let frac = 2.0 * std::f32::consts::PI / (num_boids as f32) * (i as f32);
let vel = Vec3::new(frac.cos() * 1.0, frac.sin() * 1.0, 0.0); let vel = Vec3::new(frac.cos() * 1.0, frac.sin() * 1.0, 0.0) * 10.0;
commands.spawn(( commands.spawn((
BoidBundle::new(vel), BoidBundle::new(vel),
MaterialMesh2dBundle { MaterialMesh2dBundle {