ugg

src/main.rs

@@ -13,6 +13,8 @@ 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>()
@@ -23,7 +25,7 @@ fn main() {
             (
                 build_local_cache,
                 (seperation_gizmos),
-                (seperation, cohesion, alignment),
+                // (seperation, cohesion, alignment),
                 accelerate,
                 move_boids,
                 boundary::boid_border_teleport,
@@ -55,9 +57,7 @@ struct BoidBundle {
 struct LocalCache(Vec<Entity>);
 
 fn is_local(a: Vec3, b: Vec3) -> bool {
-    const LOCAL_DISTANCE: f32 = 100.;
-
-    a.distance(b) < LOCAL_DISTANCE
+    a.distance(b) < VISION_RANGE
 }
 
 fn build_local_cache(
@@ -104,13 +104,28 @@ fn seperation_gizmos(
     mut gizmos: Gizmos,
 ) {
     boids.iter().for_each(|(transform, local)| {
-        other_boids.iter_many(&local.0).for_each(|other_transform| {
-            gizmos.arrow_2d(
-                transform.translation.xy(),
-                other_transform.translation.xy(),
-                tailwind::ROSE_500,
-            );
-        })
+        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,
+                );
+            })
     });
 }
 
@@ -187,7 +202,13 @@ 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.;
@@ -200,7 +221,7 @@ fn setup(
     let lower_height = -half_height;
     let upper_height = half_height;
 
-    for i in 0..1000 {
+    for i in 0..500 {
         use std::f32::consts::TAU;
 
         let x = small_rng.gen_range(lower_width..=upper_width);