toid blossom

src/lib.rs

@@ -1,9 +1,14 @@
 use argh::FromArgs;
 use bevy::prelude::*;
 
-const SPEED: f32 = 20.0;
+const SPEED: f32 = 1.0;
 const SPEED_DIFF_RANGE: f32 = 0.08; // +/- 8%
 
+const RADIUS: f32 = 1_000.0;
+
+pub type Point = [f32; 3];
+pub type Toint = rstar::primitives::GeomWithData<Point, Entity>;
+
 #[derive(Debug, FromArgs, Resource)]
 /// Toid Watching
 pub struct Config {
@@ -12,24 +17,10 @@ pub struct Config {
     pub toids: usize,
 }
 
-pub type Point = (f32, f32, f32);
-
-pub type Toint = rstar::primitives::GeomWithData<Point, Entity>;
-
-pub trait Pointable {
-    fn to_point(&self) -> Point;
-}
-
-impl Pointable for Vec3 {
-    fn to_point(&self) -> Point {
-        (self.x, self.y, self.z)
-    }
-}
-
-#[derive(Resource, Deref, DerefMut)]
+#[derive(Resource, Deref, DerefMut, Default)]
 pub struct Index(pub rstar::RTree<Toint>);
 
-#[derive(Resource, Deref, DerefMut)]
+#[derive(Resource, Deref, DerefMut, Default)]
 pub struct Positions(pub std::collections::HashMap<Entity, Vec3>);
 
 #[derive(Component, Debug, Clone, Deref, DerefMut, Default)]
@@ -41,6 +32,7 @@ pub struct Velocity(Vec3);
 #[derive(Component)]
 pub struct Toid {
     pub speed: f32,
+    pub buddies: usize,
 }
 
 pub fn turkey_time(
@@ -51,9 +43,10 @@ pub fn turkey_time(
     let speed_diff = r.gen_range(-SPEED_DIFF_RANGE..=SPEED_DIFF_RANGE);
     let speed = SPEED + (SPEED * speed_diff);
     let vel = unit_vec(r) * speed;
+    let buddies = r.gen_range(6..=8);
     commands
         .spawn(SpatialBundle::default())
-        .insert((Velocity(vel), Buddies::default(), Toid { speed }))
+        .insert((Velocity(vel), Buddies::default(), Toid { speed, buddies }))
         .with_children(|t| {
             t.spawn(SceneBundle {
                 scene: scene.to_owned(),
@@ -83,8 +76,9 @@ pub fn update_pos(
 ) {
     let dt = time.delta_seconds();
     for (mut xform, vel, _entity) in toids.iter_mut() {
-        let vel = vel.0;
-        xform.translation += vel * dt;
+        xform.translation += vel.0 * dt;
+        let look_at = xform.translation + vel.0;
+        xform.look_at(look_at, Vec3::Y);
     }
 }
 
@@ -111,7 +105,7 @@ pub fn update_buddies(mut toids: Query<(&Transform, Entity, &mut Buddies)>, inde
 // util
 //-************************************************************************
 
-pub fn unit_vec(r: &mut impl rand::prelude::Rng) -> Vec3 {
+pub fn unit_vec(r: &mut impl rand::Rng) -> Vec3 {
     let mut x1: f32 = 0.0;
     let mut x2: f32 = 0.0;
     let mut ssum = std::f32::MAX;

src/main.rs

@@ -8,16 +8,21 @@ fn main() {
     let config: audubon::Config = argh::from_env();
     App::new()
         .add_plugins(DefaultPlugins)
+        .insert_resource(Index(rstar::RTree::new()))
         .insert_resource(config)
         .add_systems(Startup, setup)
         .add_systems(
             Update,
             (
+                update_vel,
                 add_gizmos,
+                update_pos,
+                update_buddies,
                 rotate_camera,
                 update_config,
                 bevy::window::close_on_esc,
-            ),
+            )
+                .chain(),
         )
         .run();
 }
@@ -32,7 +37,7 @@ fn setup(
     let rand = &mut rand::thread_rng();
 
     commands.spawn(Camera3dBundle {
-        transform: Transform::from_xyz(0., 1.5, 6.).looking_at(Vec3::ZERO, Vec3::Y),
+        transform: Transform::from_xyz(0., 3.5, 10.).looking_at(Vec3::ZERO, Vec3::Y),
         ..default()
     });
     // plane