checkpoint

src/lib.rs

@@ -8,12 +8,12 @@ use bevy_spatial::{kdtree::KDTree3, SpatialAccess};
 pub type NNTree = KDTree3<Toid>;
 
 // toid stuff
-const SPEED: f32 = 2.0;
+const SPEED: f32 = 0.2;
 const SPEED_DIFF_RANGE: f32 = 0.1; // +/- 10%
 const MAX_DELTA_V: f32 = std::f32::consts::PI * 2.0; // basically 360 degrees/sec
 
 // how far from origin before really wanting to come back
-const RADIUS: f32 = 40.0;
+const RADIUS: f32 = 50.0;
 
 // how close to try to stay to your buddies
 const BUDDY_RADIUS: f32 = 10.0;
@@ -58,8 +58,9 @@ pub fn turkey_time(
     let x = r.gen_range(-10.0..=10.0);
     let z = r.gen_range(-10.0..=10.0);
     let y = r.gen_range(0.1..=5.5);
+    let pos = Vec3::new(x, MIN_ALTITUDE + y, z);
     let spatial_bundle = SpatialBundle {
-        transform: Transform::from_xyz(x, MIN_ALTITUDE + y, z),
+        transform: Transform::from_translation(pos),
         ..Default::default()
     };
     commands
@@ -70,11 +71,11 @@ pub fn turkey_time(
                 scene: scene.to_owned(),
                 ..Default::default()
             })
-            .insert(Transform::default());
-            //  .insert(Transform::from_rotation(Quat::from_axis_angle(
-            //     Vec3::Y,
-            //     -std::f32::consts::FRAC_PI_2,
-            // )));
+            //     .insert(Transform::default());
+            .insert(Transform::from_rotation(Quat::from_axis_angle(
+                Vec3::Y,
+                -std::f32::consts::FRAC_PI_2,
+            )));
         })
         .id()
 }
@@ -94,7 +95,7 @@ pub fn update_vel(
         let original_dir = dir;
 
         // find buddies and orient; point more towards further-away buddies
-        for buddy in buddies.0.iter() {
+        for buddy in buddies.iter() {
             let bp = positions.get(buddy).unwrap();
             let bdir = *bp - pos;
             let dist = bdir.length();
@@ -105,7 +106,7 @@ pub fn update_vel(
         }
 
         // avoid flying into neighbors
-        let min_dist = speed;
+        let min_dist = speed * 10.0;
         for neighbor in index
             .within_distance(pos, min_dist)
             .iter()
@@ -161,9 +162,11 @@ pub fn update_pos(
     let mut new_look = Vec3::ZERO;
     let dt = time.delta_seconds();
     for (mut xform, vel, entity) in toids.iter_mut() {
-        let look_at = xform.translation + vel.0;
-        xform.translation += vel.0 * dt;
-        xform.look_at(look_at, Vec3::Y);
+        xform.translation += **vel * dt;
+        let look_at = xform.translation + **vel;
+        let right = look_at.cross(Vec3::Y).normalize();
+        let up = right.cross(look_at).normalize();
+        xform.look_at(look_at, up);
         *positions.entry(entity).or_insert(Vec3::ZERO) = xform.translation;
         new_look += xform.translation;
     }

src/main.rs

@@ -29,7 +29,7 @@ fn main() {
         .add_systems(Startup, setup)
         .add_systems(Update, (update_pos, update_buddies, update_vel).chain())
         .add_systems(Update, (rotate_camera, bevy::window::close_on_esc))
-        //.add_systems(Update, update_gizmos)
+        .add_systems(Update, update_gizmos)
         .run();
 }