Cargo.toml

@@ -14,7 +14,6 @@ features = [
   "bevy_color",
   "bevy_render",
   "bevy_winit",
-  "bevy_gizmos",
   "multi_threaded",
   "x11",
   "wayland",

src/acceleration.rs

@@ -1,17 +0,0 @@
-use bevy::prelude::*;
-
-#[derive(Component, Default)]
-pub struct SeperationAcceleration(pub Vec2);
-
-#[derive(Component, Default)]
-pub struct CohesionAcceleration(pub Vec2);
-
-#[derive(Component, Default)]
-pub struct AlignmentAcceleration(pub Vec2);
-
-#[derive(Bundle, Default)]
-pub struct BoidAccelerationBundle {
-    pub s_cache: SeperationAcceleration,
-    pub c_cache: CohesionAcceleration,
-    pub a_cache: AlignmentAcceleration,
-}

src/main.rs

@@ -1,20 +1,12 @@
-#![allow(clippy::type_complexity)]
 // #![allow(unused)]
 
-mod acceleration;
 mod boid_mesh;
 mod boundary;
 
-use acceleration::{
-    AlignmentAcceleration, BoidAccelerationBundle, CohesionAcceleration, SeperationAcceleration,
-};
-
 use bevy::{color::palettes::tailwind, prelude::*, sprite::MaterialMesh2dBundle};
 use boid_mesh::BoidMesh;
 use rand::{Rng, SeedableRng};
 
-const VISION_RANGE: f32 = 100.;
-
 fn main() {
     App::new()
         .init_resource::<BoidMesh>()
@@ -24,8 +16,7 @@ fn main() {
             Update,
             (
                 build_local_cache,
-                (seperation_gizmos),
-                // (seperation, cohesion, alignment),
+                (seperation, cohesion, alignment),
                 accelerate,
                 move_boids,
                 boundary::boid_border_teleport,
@@ -35,15 +26,28 @@ fn main() {
         .run();
 }
 
-#[derive(Component, Default)]
-struct DrawGizmos;
-
 #[derive(Component, Default)]
 struct Boid;
 
 #[derive(Component, Default)]
 struct Velocity(Vec2);
 
+#[derive(Component, Default)]
+struct SeperationAcceleration(Vec2);
+
+#[derive(Component, Default)]
+struct CohesionAcceleration(Vec2);
+
+#[derive(Component, Default)]
+struct AlignmentAcceleration(Vec2);
+
+#[derive(Bundle, Default)]
+struct BoidAccelerationBundle {
+    s_cache: SeperationAcceleration,
+    c_cache: CohesionAcceleration,
+    a_cache: AlignmentAcceleration,
+}
+
 #[derive(Bundle, Default)]
 struct BoidBundle {
     mesh: MaterialMesh2dBundle<ColorMaterial>,
@@ -57,7 +61,9 @@ struct BoidBundle {
 struct LocalCache(Vec<Entity>);
 
 fn is_local(a: Vec3, b: Vec3) -> bool {
-    a.distance(b) < VISION_RANGE
+    const LOCAL_DISTANCE: f32 = 100.;
+
+    a.distance(b) < LOCAL_DISTANCE
 }
 
 fn build_local_cache(
@@ -87,7 +93,7 @@ fn cohesion(
             accel.0 = Vec2::ZERO;
 
             let mut count = 0;
-            for transform in other_boids.iter_many(&local.0) {
+            for transform in other_boids.iter_many(&local.0[..]) {
                 accel.0 += transform.translation.xy();
 
                 count += 1;
@@ -98,37 +104,6 @@ fn cohesion(
         })
 }
 
-fn seperation_gizmos(
-    boids: Query<(&Transform, &LocalCache), (With<Boid>, With<DrawGizmos>)>,
-    other_boids: Query<&Transform, With<Boid>>,
-    mut gizmos: Gizmos,
-) {
-    boids.iter().for_each(|(transform, local)| {
-        other_boids
-            .iter_many(&local.0)
-            .take(1)
-            .for_each(|other_transform| {
-                let distance = transform.translation.distance(other_transform.translation);
-                let diff_scale = (distance / VISION_RANGE);
-
-                let mut diff = transform.translation - other_transform.translation;
-                diff *= diff_scale;
-
-                gizmos.arrow(
-                    transform.translation,
-                    transform.translation + diff,
-                    tailwind::RED_500,
-                );
-
-                gizmos.line(
-                    transform.translation,
-                    other_transform.translation,
-                    tailwind::GREEN_500,
-                );
-            })
-    });
-}
-
 fn seperation(
     mut boids: Query<(&Transform, &LocalCache, &mut SeperationAcceleration), With<Boid>>,
     other_boids: Query<&Transform, With<Boid>>,
@@ -146,7 +121,7 @@ fn alignment(
         .for_each(|(velocity, local, mut accel)| {
             accel.0 = Vec2::ZERO;
             let mut count = 0;
-            for other_velocity in other_boids.iter_many(&local.0) {
+            for other_velocity in other_boids.iter_many(&local.0[..]) {
                 accel.0 += other_velocity.0;
 
                 count += 1;
@@ -202,13 +177,7 @@ fn setup(
     mut materials: ResMut<Assets<ColorMaterial>>,
     boid_mesh: Res<BoidMesh>,
     windows: Query<&Window>,
-    mut time: ResMut<Time<Virtual>>,
-    mut config_store: ResMut<GizmoConfigStore>,
 ) {
-    time.set_relative_speed(0.1);
-    let (gizmo_config, _) = config_store.config_mut::<DefaultGizmoConfigGroup>();
-    gizmo_config.line_width = 5.;
-
     let window = windows.get_single().unwrap();
     let half_width = window.resolution.width() / 4.;
     let half_height = window.resolution.height() / 2.;
@@ -221,7 +190,7 @@ fn setup(
     let lower_height = -half_height;
     let upper_height = half_height;
 
-    for i in 0..500 {
+    for _ in 0..1000 {
         use std::f32::consts::TAU;
 
         let x = small_rng.gen_range(lower_width..=upper_width);
@@ -229,7 +198,7 @@ fn setup(
 
         let angle = small_rng.gen_range(-TAU..=TAU);
 
-        let mut entity_commands = commands.spawn(BoidBundle {
+        commands.spawn(BoidBundle {
             mesh: MaterialMesh2dBundle {
                 mesh: boid_mesh.0.clone(),
                 material: boid_color.clone(),
@@ -240,10 +209,6 @@ fn setup(
             velocity: Velocity(Vec2::from_angle(angle) * 200.),
             ..default()
         });
-
-        if i == 0 {
-            entity_commands.insert(DrawGizmos);
-        }
     }
 
     commands.spawn(Camera2dBundle::default());