Cargo.toml

@@ -8,14 +8,14 @@ rand = "0.8"
 # bevy_polyline = "0.4"
 noise = { git = "https://github.com/Razaekel/noise-rs" }
 hexasphere = "8"
-wgpu = "0.19"
+wgpu = "0.15"
-bevy-inspector-egui = "0.24"
+bevy-inspector-egui = "0.18"
 
 [features]
 inspector = []
 
 [dependencies.bevy]
-version = "0.13"
+version = "0.10"
 default-features = false
 features = [
   "bevy_gilrs",
@@ -27,12 +27,11 @@ features = [
   "bevy_text",
   "bevy_gltf",
   "bevy_sprite",
-  "tonemapping_luts"
 ]
 
 [dependencies.bevy_rapier3d]
 features = ["debug-render-3d"]
-version = "0.26"
+version = "0.21"
 
 # Maybe also enable only a small amount of optimization for our code:
 [profile.dev]

src/action/components.rs

@@ -4,7 +4,6 @@ use bevy::{
     prelude::{Component, ReflectResource, Resource, Vec3},
     reflect::Reflect,
 };
-use bevy_rapier3d::dynamics::Velocity;
 
 #[derive(Debug, Resource)]
 pub(crate) struct ActionDebugInstant(pub Instant);
@@ -27,8 +26,20 @@ impl ActionDebugInstant {
     }
 }
 
-#[derive(Debug, Component, Default)]
+#[derive(Debug, Component)]
-pub struct PreviousVelocity(pub Velocity);
+pub(super) struct Tunneling {
+    pub frames: usize,
+    pub dir: Vec3,
+}
+
+impl Default for Tunneling {
+    fn default() -> Self {
+        Tunneling {
+            frames: 15,
+            dir: Vec3::ZERO,
+        }
+    }
+}
 
 #[derive(Debug, Resource, Reflect)]
 #[reflect(Resource)]
@@ -41,7 +52,7 @@ impl Default for MovementSettings {
     fn default() -> Self {
         Self {
             accel: 20.0,
-            gravity: 9.8,
+            gravity: 4.8,
         }
     }
 }

src/action/mod.rs

@@ -1,7 +1,7 @@
 use bevy::{
     diagnostic::FrameTimeDiagnosticsPlugin,
     ecs::reflect::ReflectResource,
-    prelude::{App, IntoSystemConfigs, Plugin, Resource, Startup, Update},
+    prelude::{App, IntoSystemConfigs, Plugin, Resource},
     reflect::Reflect,
 };
 use bevy_rapier3d::prelude::{NoUserData, RapierPhysicsPlugin};
@@ -28,17 +28,18 @@ impl Plugin for CyberActionPlugin {
             .init_resource::<CyberLean>()
             .register_type::<CyberLean>()
             .register_type::<CatControllerSettings>()
-            .add_plugins(RapierPhysicsPlugin::<NoUserData>::default())
+            .add_plugin(RapierPhysicsPlugin::<NoUserData>::default())
-            .add_systems(Startup, physics_init)
+            .add_startup_system(timestep_setup)
-            .add_plugins(FrameTimeDiagnosticsPlugin)
+            .add_plugin(FrameTimeDiagnosticsPlugin::default())
             .add_systems(
-                Update,
                 (
-                    reset_external_forces,
+                    gravity,
                     cyber_lean,
                     falling_cat,
-                    wheel_forces,
+                    input_forces,
                     drag,
+                    tunnel_out,
+                    surface_fix,
                 )
                     .chain(),
             );

src/action/systems.rs

@@ -1,238 +1,21 @@
 use std::f32::consts::{FRAC_PI_3, FRAC_PI_4};
 
-use bevy::{
+use bevy::prelude::{
-    prelude::{
+    Commands, Entity, Quat, Query, Res, ResMut, Time, Transform, Vec3, With, Without,
-        info, Gizmos, Local, Quat, Query, Res, ResMut, Time, Transform, Vec3, With, Without,
-    },
-    render::color::Color,
 };
-use bevy_rapier3d::{
+use bevy_rapier3d::prelude::{
-    geometry::Friction,
+    CollisionGroups, ExternalForce, Group, MultibodyJoint, QueryFilter, RapierConfiguration,
-    prelude::{
+    RapierContext, ReadMassProperties, TimestepMode, Velocity,
-        ExternalForce, QueryFilter, RapierConfiguration, RapierContext, ReadMassProperties,
-        TimestepMode, Velocity,
-    },
 };
 
 #[cfg(feature = "inspector")]
 use super::ActionDebugInstant;
-use super::{
+use super::{CatControllerSettings, CatControllerState, CyberLean, MovementSettings, Tunneling};
-    CatControllerSettings, CatControllerState, CyberLean, MovementSettings, PreviousVelocity,
-};
 use crate::{
-    bike::{CyberBikeBody, CyberSteering, CyberWheel, WheelConfig},
+    bike::{CyberBikeBody, CyberSteering, CyberWheel, WheelConfig, BIKE_WHEEL_COLLISION_GROUP},
     input::InputState,
 };
 
-pub(super) fn physics_init(
-    mut config: ResMut<RapierConfiguration>,
-    settings: Res<MovementSettings>,
-) {
-    config.timestep_mode = TimestepMode::Variable {
-        max_dt: 1.0 / 60.0,
-        time_scale: 1.0,
-        substeps: 3,
-    };
-
-    config.gravity = Vec3::NEG_Y * settings.gravity;
-}
-
-pub(super) fn reset_external_forces(
-    mut query: Query<&mut ExternalForce>,
-    #[cfg(feature = "inspector")] mut debug_instant: ResMut<ActionDebugInstant>,
-) {
-    for mut force in query.iter_mut() {
-        #[cfg(feature = "inspector")]
-        if debug_instant.elapsed().as_millis() > 1000 {
-            info!("{force:?}");
-        }
-
-        force.force = Vec3::ZERO;
-        force.torque = Vec3::ZERO;
-    }
-    #[cfg(feature = "inspector")]
-    if debug_instant.elapsed().as_millis() > 1000 {
-        debug_instant.reset();
-    }
-}
-
-/// The desired lean angle, given steering input and speed.
-pub(super) fn cyber_lean(
-    bike_state: Query<(&Velocity, &Transform), With<CyberBikeBody>>,
-    wheels: Query<&Transform, With<CyberWheel>>,
-    input: Res<InputState>,
-    gravity_settings: Res<MovementSettings>,
-    mut lean: ResMut<CyberLean>,
-) {
-    let (velocity, xform) = bike_state.single();
-    let vel = velocity.linvel.dot(*xform.forward());
-    let v_squared = vel.powi(2);
-    let steering_angle = yaw_to_angle(input.yaw);
-    let wheels: Vec<_> = wheels.iter().map(|w| w.translation).collect();
-    let wheel_base = (wheels[0] - wheels[1]).length();
-    let radius = wheel_base / steering_angle.tan();
-    let gravity = gravity_settings.gravity;
-    let v2_r = v_squared / radius;
-    let tan_theta = (v2_r / gravity).clamp(-FRAC_PI_3, FRAC_PI_3);
-
-    if tan_theta.is_finite() && !tan_theta.is_subnormal() {
-        lean.lean = tan_theta.atan().clamp(-FRAC_PI_4, FRAC_PI_4);
-    } else {
-        lean.lean = 0.0;
-    }
-}
-
-/// PID-based controller for stabilizing attitude; keeps the cyberbike upright.
-pub(super) fn falling_cat(
-    mut bike_query: Query<(
-        &Transform,
-        &Velocity,
-        &mut ExternalForce,
-        &mut CatControllerState,
-    )>,
-    time: Res<Time>,
-    settings: Res<CatControllerSettings>,
-    lean: Res<CyberLean>,
-    mut count: Local<usize>,
-) {
-    let (xform, vel, mut forces, mut control_vars) = bike_query.single_mut();
-    let world_up = Vec3::Y; //xform.translation.normalize();
-    let rot = Quat::from_axis_angle(*xform.back(), lean.lean);
-    let target_up = rotate_point(&world_up, &rot).normalize();
-
-    let bike_right = xform.right();
-
-    let roll_error = bike_right.dot(target_up);
-    let pitch_error = world_up.dot(*xform.back());
-
-    if *count < 30 {
-        if *count == 0 {
-            //dbg!(&xform.translation);
-            //dbg!(&vel.linvel);
-        }
-        *count += 1;
-    } else {
-        *count = 0;
-    }
-
-    // only try to correct roll if we're not totally vertical
-    if pitch_error.abs() < 0.95 {
-        let (derivative, integral) = control_vars.update_roll(roll_error, time.delta_seconds());
-        let mag =
-            (settings.kp * roll_error) + (settings.ki * integral) + (settings.kd * derivative);
-        if mag.is_finite() {
-            forces.torque += xform.back() * mag;
-        }
-    }
-}
-
-pub(super) fn wheel_forces(
-    mut wheels_query: Query<
-        (
-            &Transform,
-            &Velocity,
-            &mut ExternalForce,
-            &mut Friction,
-            Option<&CyberSteering>,
-        ),
-        With<CyberWheel>,
-    >,
-    wheel_config: Res<WheelConfig>,
-    context: Res<RapierContext>,
-    settings: Res<MovementSettings>,
-    input: Res<InputState>,
-    mut gizmos: Gizmos,
-) {
-    // wheel stuff
-    let radius = wheel_config.radius;
-
-    // inputs
-    let yaw = input.yaw;
-    let throttle = input.throttle * settings.accel;
-
-    for (xform, velocity, mut external_force, mut friction, steering) in wheels_query.iter_mut() {
-        let pos = xform.translation;
-        if let Some((_, projected)) = context.project_point(pos, false, QueryFilter::only_fixed()) {
-            let mut force = Vec3::ZERO;
-
-            gizmos.sphere(projected.point, Quat::IDENTITY, radius, Color::RED);
-
-            let dir = (projected.point - pos).normalize();
-
-            if let Some((_, intersection)) = context.cast_ray_and_get_normal(
-                pos,
-                dir,
-                radius * 1.05,
-                false,
-                QueryFilter::only_fixed(),
-            ) {
-                let norm = intersection.normal;
-                let point = intersection.point;
-
-                // do thrust's share
-                let thrust = norm.cross(xform.right().into()) * throttle;
-                force += thrust;
-
-                // do steering's share
-                if steering.is_some() {
-                    let thrust = norm.cross(xform.back().into());
-                    force += 5.0 * yaw * thrust;
-                }
-
-                let forward = if steering.is_some() {
-                    let angle = yaw_to_angle(yaw);
-                    let rot = Quat::from_axis_angle(Vec3::Y, angle);
-                    Transform::from_rotation(rot).forward()
-                } else {
-                    xform.forward()
-                };
-
-                // do the friction's share
-                //
-                // first the brakes
-                if input.brake {
-                    friction.coefficient = 2.0;
-                } else {
-                    friction.coefficient = 0.0;
-                }
-
-                // now static simulated friction
-
-                let alignment = forward.dot(velocity.linvel);
-                let alignment = if alignment.is_normal() || alignment == 0.0 {
-                    alignment
-                } else {
-                    1.0
-                };
-                dbg!(alignment);
-                let sign = alignment.signum();
-                let slide = sign * (1.0 - alignment.abs());
-                let perp = forward.cross(norm).normalize();
-                force += slide * perp;
-
-                // show the force
-                #[cfg(feature = "inspector")]
-                gizmos.arrow(pos, pos + force, Color::RED);
-
-                // ok apply the force
-                *external_force = ExternalForce::at_point(force, point, pos);
-            }
-        }
-    }
-}
-
-/// General velocity-based drag-force calculation; does not take orientation
-/// into account.
-pub(super) fn drag(mut query: Query<(&Velocity, &mut ExternalForce), With<CyberBikeBody>>) {
-    let (vels, mut forces) = query.single_mut();
-
-    if let Some(vel) = vels.linvel.try_normalize() {
-        let v2 = vels.linvel.length_squared();
-        forces.force -= vel * (v2 * 0.02);
-    }
-}
-
-// helpers
 fn yaw_to_angle(yaw: f32) -> f32 {
     let v = yaw.powi(5) * FRAC_PI_4;
     if v.is_normal() {
@@ -252,3 +35,211 @@ fn rotate_point(pt: &Vec3, rot: &Quat) -> Vec3 {
     // why does this need to be inverted???
     -Vec3::from_array([rot_qpt.x, rot_qpt.y, rot_qpt.z])
 }
+
+pub(super) fn timestep_setup(mut config: ResMut<RapierConfiguration>) {
+    let ts = TimestepMode::Fixed {
+        dt: 1.0 / 60.0,
+        substeps: 2,
+    };
+    config.timestep_mode = ts;
+}
+
+/// The gravity vector points from the cyberbike to the center of the planet.
+pub(super) fn gravity(
+    mut query: Query<(&Transform, &mut ExternalForce), With<CyberBikeBody>>,
+    settings: Res<MovementSettings>,
+    mut rapier_config: ResMut<RapierConfiguration>,
+    #[cfg(feature = "inspector")] mut debug_instant: ResMut<ActionDebugInstant>,
+) {
+    let (xform, mut forces) = query.single_mut();
+
+    #[cfg(feature = "inspectorb")]
+    {
+        if debug_instant.elapsed().as_millis() > 6000 {
+            dbg!(&forces);
+            debug_instant.reset();
+        }
+    }
+
+    rapier_config.gravity = xform.translation.normalize() * -settings.gravity;
+    forces.force = Vec3::ZERO;
+    forces.torque = Vec3::ZERO;
+}
+
+/// The desired lean angle, given steering input and speed.
+pub(super) fn cyber_lean(
+    bike_state: Query<(&Velocity, &Transform), With<CyberBikeBody>>,
+    wheels: Query<&Transform, With<CyberWheel>>,
+    input: Res<InputState>,
+    gravity_settings: Res<MovementSettings>,
+    mut lean: ResMut<CyberLean>,
+) {
+    let (velocity, xform) = bike_state.single();
+    let vel = velocity.linvel.dot(xform.forward());
+    let v_squared = vel.powi(2);
+    let steering_angle = yaw_to_angle(input.yaw);
+    let wheels: Vec<_> = wheels.iter().map(|w| w.translation).collect();
+    let wheel_base = (wheels[0] - wheels[1]).length();
+    let radius = wheel_base / steering_angle.tan();
+    let gravity = gravity_settings.gravity;
+    let v2_r = v_squared / radius;
+    let tan_theta = (v2_r / gravity).clamp(-FRAC_PI_3, FRAC_PI_3);
+
+    if tan_theta.is_finite() && !tan_theta.is_subnormal() {
+        lean.lean = tan_theta.atan().clamp(-FRAC_PI_4, FRAC_PI_4);
+    } else {
+        lean.lean = 0.0;
+    }
+}
+
+/// PID-based controller for stabilizing attitude; keeps the cyberbike upright.
+pub(super) fn falling_cat(
+    mut bike_query: Query<(&Transform, &mut ExternalForce, &mut CatControllerState)>,
+    time: Res<Time>,
+    settings: Res<CatControllerSettings>,
+    lean: Res<CyberLean>,
+) {
+    let (xform, mut forces, mut control_vars) = bike_query.single_mut();
+    let world_up = xform.translation.normalize();
+    let rot = Quat::from_axis_angle(xform.back(), lean.lean);
+    let target_up = rotate_point(&world_up, &rot).normalize();
+
+    let bike_right = xform.right();
+
+    let roll_error = bike_right.dot(target_up);
+    let pitch_error = world_up.dot(xform.back());
+
+    // only try to correct roll if we're not totally vertical
+    if pitch_error.abs() < 0.95 {
+        let (derivative, integral) = control_vars.update_roll(roll_error, time.delta_seconds());
+        let mag =
+            (settings.kp * roll_error) + (settings.ki * integral) + (settings.kd * derivative);
+        if mag.is_finite() {
+            forces.torque += xform.back() * mag;
+        }
+    }
+}
+
+/// Apply forces to the cyberbike as a result of input.
+pub(super) fn input_forces(
+    settings: Res<MovementSettings>,
+    input: Res<InputState>,
+    mut braking_query: Query<&mut MultibodyJoint, (Without<CyberSteering>, With<CyberWheel>)>,
+    mut body_query: Query<
+        (&Transform, &mut ExternalForce),
+        (With<CyberBikeBody>, Without<CyberSteering>),
+    >,
+    mut steering_query: Query<&mut MultibodyJoint, With<CyberSteering>>,
+) {
+    let (xform, mut forces) = body_query.single_mut();
+
+    // thrust
+    let thrust = xform.forward() * input.throttle * settings.accel;
+    let point = xform.translation + xform.back();
+    let force = ExternalForce::at_point(thrust, point, xform.translation);
+    *forces += force;
+
+    // brake + thrust
+    for mut motor in braking_query.iter_mut() {
+        let factor = if input.brake {
+            500.00
+        } else {
+            input.throttle * settings.accel
+        };
+        let speed = if input.brake { 0.0 } else { -70.0 };
+        motor.data = (*motor
+            .data
+            .as_revolute_mut()
+            .unwrap()
+            .set_motor_max_force(factor)
+            .set_motor_velocity(speed, factor))
+        .into();
+    }
+
+    // steering
+    let angle = yaw_to_angle(input.yaw);
+    let mut steering = steering_query.single_mut();
+    steering.data = (*steering
+        .data
+        .as_revolute_mut()
+        .unwrap()
+        .set_motor_position(-angle, 100.0, 0.5))
+    .into();
+}
+
+/// Don't let the wheels get stuck underneat the planet
+pub(super) fn surface_fix(
+    mut commands: Commands,
+    mut wheel_query: Query<
+        (Entity, &Transform, &mut CollisionGroups),
+        (With<CyberWheel>, Without<Tunneling>),
+    >,
+    span_query: Query<&Transform, With<CyberWheel>>,
+    config: Res<WheelConfig>,
+    context: Res<RapierContext>,
+) {
+    let mut wheels = Vec::new();
+    for xform in span_query.iter() {
+        wheels.push(xform);
+    }
+    let span = (wheels[1].translation - wheels[0].translation).normalize();
+
+    for (entity, xform, mut cgroups) in wheel_query.iter_mut() {
+        //let ray_dir = xform.translation.normalize();
+        let ray_dir = xform.right().cross(span).normalize();
+        if let Some(hit) = context.cast_ray_and_get_normal(
+            xform.translation,
+            ray_dir,
+            config.radius * 1.1,
+            false,
+            QueryFilter::only_fixed(),
+        ) {
+            cgroups.memberships = Group::NONE;
+            cgroups.filters = Group::NONE;
+            commands.entity(entity).insert(Tunneling {
+                frames: 3,
+                dir: hit.1.normal,
+            });
+        }
+    }
+}
+
+pub(super) fn tunnel_out(
+    mut commands: Commands,
+    mut wheel_query: Query<
+        (
+            Entity,
+            &mut Tunneling,
+            &mut ExternalForce,
+            &mut CollisionGroups,
+        ),
+        With<CyberWheel>,
+    >,
+    mprops: Query<&ReadMassProperties, With<CyberBikeBody>>,
+    settings: Res<MovementSettings>,
+) {
+    let mprops = mprops.single();
+    for (entity, mut tunneling, mut force, mut cgroups) in wheel_query.iter_mut() {
+        if tunneling.frames == 0 {
+            commands.entity(entity).remove::<Tunneling>();
+            force.force = Vec3::ZERO;
+            (cgroups.memberships, cgroups.filters) = BIKE_WHEEL_COLLISION_GROUP;
+            continue;
+        }
+        tunneling.frames -= 1;
+        force.force = tunneling.dir * settings.gravity * 1.5 * mprops.0.mass;
+        #[cfg(feature = "inspector")]
+        dbg!(&tunneling);
+    }
+}
+
+/// General velocity-based drag-force calculation; does not take orientation
+/// into account.
+pub(super) fn drag(mut query: Query<(&Velocity, &mut ExternalForce), With<CyberBikeBody>>) {
+    let (vels, mut forces) = query.single_mut();
+
+    if let Some(vel) = vels.linvel.try_normalize() {
+        let v2 = vels.linvel.length_squared();
+        forces.force -= vel * (v2 * 0.02);
+    }
+}

src/bike/body.rs

@@ -8,10 +8,7 @@ use bevy_rapier3d::prelude::{
 };
 
 use super::{spawn_wheels, CyberBikeBody, Meshterial, WheelConfig, BIKE_BODY_COLLISION_GROUP};
-use crate::{
+use crate::{action::CatControllerState, planet::PLANET_RADIUS};
-    action::{CatControllerState, PreviousVelocity},
-    planet::PLANET_RADIUS,
-};
 
 pub(super) fn spawn_cyberbike(
     mut commands: Commands,
@@ -19,12 +16,13 @@ pub(super) fn spawn_cyberbike(
     wheel_conf: Res<WheelConfig>,
     mut meshterials: Meshterial,
 ) {
-    let altitude = 3.0;
+    let altitude = PLANET_RADIUS - 10.0;
 
-    let mut xform = Transform::from_translation(Vec3::Y * altitude);
+    let mut xform = Transform::from_translation(Vec3::X * altitude)
+        .with_rotation(Quat::from_axis_angle(Vec3::Z, -89.0f32.to_radians()));
 
-    // let right = xform.right() * 350.0;
+    let right = xform.right() * 350.0;
-    // xform.translation += right;
+    xform.translation += right;
 
     let damping = Damping {
         angular_damping: 2.0,
@@ -66,7 +64,6 @@ pub(super) fn spawn_cyberbike(
             Sleeping::disabled(),
             Ccd { enabled: true },
             ReadMassProperties::default(),
-            PreviousVelocity::default(),
         ))
         .insert(TransformInterpolation {
             start: None,

src/bike/components.rs

@@ -22,6 +22,7 @@ pub struct WheelConfig {
     pub stiffness: f32,
     pub damping: f32,
     pub radius: f32,
+    pub thickness: f32,
     pub friction: f32,
     pub restitution: f32,
     pub density: f32,
@@ -34,10 +35,11 @@ impl Default for WheelConfig {
             rear_back: 1.0,
             y: -0.1,
             limits: [-0.5, 0.1],
-            stiffness: 30.0,
+            stiffness: 190.0,
             damping: 8.0,
-            radius: 0.3,
+            radius: 0.25,
-            friction: 0.0,
+            thickness: 0.11,
+            friction: 1.2,
             restitution: 0.95,
             density: 0.05,
         }

src/bike/mod.rs

@@ -1,16 +1,17 @@
 mod body;
 mod components;
-//mod controller;
 mod wheels;
 
-use bevy::prelude::{App, Assets, Mesh, Plugin, PostStartup, ResMut, StandardMaterial};
+use bevy::prelude::{
+    App, Assets, IntoSystemConfig, Mesh, Plugin, ResMut, StandardMaterial, StartupSet,
+};
 use bevy_rapier3d::prelude::Group;
 
 pub(crate) use self::components::*;
 use self::{body::spawn_cyberbike, wheels::spawn_wheels};
 
 pub const BIKE_BODY_COLLISION_GROUP: (Group, Group) = (Group::GROUP_1, Group::GROUP_1);
-pub const BIKE_WHEEL_COLLISION_GROUP: (Group, Group) = (Group::GROUP_2, Group::GROUP_2);
+pub const BIKE_WHEEL_COLLISION_GROUP: (Group, Group) = (Group::GROUP_10, Group::GROUP_10);
 
 type Meshterial<'a> = (
     ResMut<'a, Assets<Mesh>>,
@@ -22,6 +23,6 @@ impl Plugin for CyberBikePlugin {
     fn build(&self, app: &mut App) {
         app.insert_resource(WheelConfig::default())
             .register_type::<WheelConfig>()
-            .add_systems(PostStartup, spawn_cyberbike);
+            .add_startup_system(spawn_cyberbike.in_base_set(StartupSet::PostStartup));
     }
 }

src/bike/wheels.rs

@@ -1,35 +1,35 @@
-use bevy::prelude::*;
+use bevy::prelude::{shape::Torus as Tire, *};
-use bevy_rapier3d::{
+use bevy_rapier3d::prelude::{
-    dynamics::{Ccd, FixedJointBuilder, Velocity},
+    Ccd, CoefficientCombineRule, Collider, ColliderMassProperties, CollisionGroups, Damping,
-    geometry::{Collider, CollisionGroups, Friction},
+    ExternalForce, Friction, MultibodyJoint, PrismaticJointBuilder, Restitution,
-    prelude::{
+    RevoluteJointBuilder, RigidBody, Sleeping, TransformInterpolation,
-        ColliderMassProperties, ExternalForce, MultibodyJoint, PrismaticJointBuilder, RigidBody,
-        Sleeping, TransformInterpolation,
-    },
 };
 
 use super::{CyberSteering, CyberWheel, Meshterial, WheelConfig, BIKE_WHEEL_COLLISION_GROUP};
-use crate::action::PreviousVelocity;
 
-pub(crate) fn spawn_wheels(
+pub fn spawn_wheels(
     commands: &mut Commands,
     bike: Entity,
     conf: &WheelConfig,
     meshterials: &mut Meshterial,
 ) {
+    let (membership, filter) = BIKE_WHEEL_COLLISION_GROUP;
+    let wheels_collision_group = CollisionGroups::new(membership, filter);
     let wheel_y = conf.y;
     let stiffness = conf.stiffness;
     let not_sleeping = Sleeping::disabled();
+    let ccd = Ccd { enabled: true };
     let limits = conf.limits;
     let (meshes, materials) = meshterials;
-    //let rake_vec: Vec3 = Vec3::new(0.0, 1.0, 0.57).normalize(); // about 30
+    let rake_vec: Vec3 = Vec3::new(0.0, 1.0, 0.57).normalize(); // about 30 degrees of rake
-    // degrees of rake
+
+    let friction = Friction {
+        coefficient: conf.friction,
+        combine_rule: CoefficientCombineRule::Average,
+    };
 
     let mut wheel_poses = Vec::with_capacity(2);
 
-    let (membership, filter) = BIKE_WHEEL_COLLISION_GROUP;
-    let wheels_collision_group = CollisionGroups::new(membership, filter);
-
     // front
     {
         let wheel_x = 0.0;
@@ -47,12 +47,17 @@ pub(crate) fn spawn_wheels(
     }
 
     for (offset, steering) in wheel_poses {
-        let mesh = gen_tires(conf);
+        let (mesh, collider) = gen_tires(conf);
 
         let material = StandardMaterial {
-            base_color: Color::YELLOW,
+            base_color: Color::Rgba {
+                red: 0.01,
+                green: 0.01,
+                blue: 0.01,
+                alpha: 1.0,
+            },
             alpha_mode: AlphaMode::Opaque,
-            perceptual_roughness: 0.1,
+            perceptual_roughness: 0.5,
             ..Default::default()
         };
 
@@ -66,8 +71,7 @@ pub(crate) fn spawn_wheels(
         let suspension_damping = conf.damping;
 
         let suspension_axis = if steering.is_some() {
-            // rake_vec
+            rake_vec
-            Vec3::Y
         } else {
             Vec3::Y
         };
@@ -83,47 +87,91 @@ pub(crate) fn spawn_wheels(
             .insert(not_sleeping)
             .id();
 
-        let axel_parent_entity = if steering.is_some() {
+        let axel_parent_entity = if let Some(steering) = steering {
-            let neck_builder = FixedJointBuilder::new().local_anchor1(Vec3::new(0.0, 0.0, 0.1)); // this adds another 0.1m of trail
+            let neck_builder =
+                RevoluteJointBuilder::new(rake_vec).local_anchor1(Vec3::new(0.0, 0.0, 0.1)); // this adds another 0.1m of trail
             let neck_joint = MultibodyJoint::new(fork_rb_entity, neck_builder);
-            let neck = commands.spawn(RigidBody::Dynamic).insert(neck_joint).id();
+            let neck = commands
+                .spawn(RigidBody::Dynamic)
+                .insert(neck_joint)
+                .insert(steering)
+                .insert(not_sleeping)
+                .id();
             neck
         } else {
             fork_rb_entity
         };
 
-        let axel_builder = FixedJointBuilder::new();
+        let axel_builder = RevoluteJointBuilder::new(Vec3::X);
         let axel_joint = MultibodyJoint::new(axel_parent_entity, axel_builder);
+        let wheel_damping = Damping {
+            linear_damping: 0.8,
+            ..Default::default()
+        };
 
-        let c = &mut commands.spawn(pbr_bundle);
+        commands.spawn(pbr_bundle).insert((
-        c.insert((
+            collider,
             mass_props,
-            axel_joint,
+            wheel_damping,
-            CyberWheel,
+            ccd,
             not_sleeping,
-            Velocity::default(),
+            axel_joint,
-            PreviousVelocity::default(),
+            wheels_collision_group,
+            friction,
+            CyberWheel,
             ExternalForce::default(),
+            Restitution::new(conf.restitution),
             SpatialBundle::default(),
             TransformInterpolation::default(),
             RigidBody::Dynamic,
-            Ccd { enabled: true },
-            Friction {
-                coefficient: 0.0,
-                combine_rule: bevy_rapier3d::dynamics::CoefficientCombineRule::Min,
-            },
-            wheels_collision_group,
-            Collider::ball(conf.radius),
         ));
-        if steering.is_some() {
-            c.insert(CyberSteering);
-        }
     }
 }
 
 // do mesh shit
-fn gen_tires(conf: &WheelConfig) -> Mesh {
+fn gen_tires(conf: &WheelConfig) -> (Mesh, Collider) {
     let wheel_rad = conf.radius;
-    let tire = Sphere::new(wheel_rad);
+    let tire_thickness = conf.thickness;
-    Mesh::from(tire)
+    let tire = Tire {
+        radius: wheel_rad,
+        ring_radius: tire_thickness,
+        ..Default::default()
+    };
+
+    let mut mesh = Mesh::from(tire);
+    let tire_verts = mesh
+        .attribute(Mesh::ATTRIBUTE_POSITION)
+        .unwrap()
+        .as_float3()
+        .unwrap()
+        .iter()
+        .map(|v| {
+            //
+            let v = Vec3::from_array(*v);
+            let m = Mat3::from_rotation_z(90.0f32.to_radians());
+            let p = m.mul_vec3(v);
+            p.to_array()
+        })
+        .collect::<Vec<[f32; 3]>>();
+    mesh.remove_attribute(Mesh::ATTRIBUTE_POSITION);
+    mesh.insert_attribute(Mesh::ATTRIBUTE_POSITION, tire_verts);
+
+    let mut idxs = Vec::new();
+    let indices = mesh.indices().unwrap().iter().collect::<Vec<_>>();
+    for idx in indices.as_slice().chunks_exact(3) {
+        idxs.push([idx[0] as u32, idx[1] as u32, idx[2] as u32]);
+    }
+    let wheel_collider = Collider::convex_decomposition(
+        &mesh
+            .attribute(Mesh::ATTRIBUTE_POSITION)
+            .unwrap()
+            .as_float3()
+            .unwrap()
+            .iter()
+            .map(|v| Vec3::from_array(*v))
+            .collect::<Vec<_>>(),
+        &idxs,
+    );
+
+    (mesh, wheel_collider)
 }

src/camera.rs

@@ -67,7 +67,7 @@ fn follow_cyberbike(
     offset: Res<DebugCamOffset>,
 ) {
     let bike_xform = *query.p0().single();
-    let up = Vec3::Y; //bike_xform.translation.normalize();
+    let up = bike_xform.translation.normalize();
 
     for (mut cam_xform, cam_type) in query.p1().iter_mut() {
         match *cam_type {
@@ -81,7 +81,7 @@ fn follow_cyberbike(
                 // handle input pitch
                 let angle = input.pitch.powi(3) * MAX_PITCH;
                 let axis = cam_xform.right();
-                cam_xform.rotate(Quat::from_axis_angle(*axis, angle));
+                cam_xform.rotate(Quat::from_axis_angle(axis, angle));
             }
             CyberCameras::Debug => {
                 let mut ncx = bike_xform.to_owned();
@@ -101,7 +101,7 @@ fn update_active_camera(
 ) {
     // find the camera with the current state, set it as the ActiveCamera
     query.iter_mut().for_each(|(mut cam, cyber)| {
-        if cyber.eq(&state.get()) {
+        if cyber.eq(&state.0) {
             cam.is_active = true;
         } else {
             cam.is_active = false;
@@ -112,13 +112,13 @@ fn update_active_camera(
 fn cycle_cam_state(
     state: Res<State<CyberCameras>>,
     mut next: ResMut<NextState<CyberCameras>>,
-    mut keys: ResMut<ButtonInput<KeyCode>>,
+    mut keys: ResMut<Input<KeyCode>>,
 ) {
-    if keys.just_pressed(KeyCode::KeyD) {
+    if keys.just_pressed(KeyCode::D) {
-        let new_state = state.get().next();
+        let new_state = state.0.next();
         info!("{:?}", new_state);
         next.set(new_state);
-        keys.reset(KeyCode::KeyD);
+        keys.reset(KeyCode::D);
     }
 }
 
@@ -132,10 +132,9 @@ impl Plugin for CyberCamPlugin {
 
 fn common(app: &mut bevy::prelude::App) {
     app.insert_resource(DebugCamOffset::default())
-        .add_systems(Startup, setup_cybercams)
+        .add_startup_system(setup_cybercams)
-        .init_state::<CyberCameras>()
+        .add_state::<CyberCameras>()
-        .add_systems(
+        .add_system(cycle_cam_state)
-            Update,
+        .add_system(update_active_camera)
-            (cycle_cam_state, update_active_camera, follow_cyberbike),
+        .add_system(follow_cyberbike);
-        );
 }

src/glamor.rs

@@ -19,17 +19,16 @@ impl Plugin for CyberGlamorPlugin {
             let mode = DebugRenderMode::CONTACTS
                 | DebugRenderMode::SOLVER_CONTACTS
                 | DebugRenderMode::JOINTS
-                | DebugRenderMode::COLLIDER_SHAPES
                 | DebugRenderMode::RIGID_BODY_AXES;
 
             let rplugin = RapierDebugRenderPlugin {
                 style,
-                // always_on_top: true,
+                always_on_top: true,
                 enabled: true,
                 mode,
             };
 
-            app.add_plugins(rplugin);
+            app.add_plugin(rplugin);
         }
     }
 }

src/input.rs

@@ -14,22 +14,22 @@ pub(crate) struct InputState {
     pub pitch: f32,
 }
 
-fn update_debug_cam(mut offset: ResMut<DebugCamOffset>, mut keys: ResMut<ButtonInput<KeyCode>>) {
+fn update_debug_cam(mut offset: ResMut<DebugCamOffset>, mut keys: ResMut<Input<KeyCode>>) {
     let keyset: HashSet<_> = keys.get_pressed().collect();
-    let shifted = keyset.contains(&KeyCode::ShiftLeft) || keyset.contains(&KeyCode::ShiftRight);
+    let shifted = keyset.contains(&KeyCode::LShift) || keyset.contains(&KeyCode::RShift);
 
     for key in keyset {
         match key {
-            KeyCode::ArrowLeft => offset.rot -= 5.0,
+            KeyCode::Left => offset.rot -= 5.0,
-            KeyCode::ArrowRight => offset.rot += 5.0,
+            KeyCode::Right => offset.rot += 5.0,
-            KeyCode::ArrowUp => {
+            KeyCode::Up => {
                 if shifted {
                     offset.alt += 0.5;
                 } else {
                     offset.dist -= 0.5;
                 }
             }
-            KeyCode::ArrowDown => {
+            KeyCode::Down => {
                 if shifted {
                     offset.alt -= 0.5;
                 } else {
@@ -41,17 +41,16 @@ fn update_debug_cam(mut offset: ResMut<DebugCamOffset>, mut keys: ResMut<ButtonI
     }
 
     if keys.get_just_released().len() > 0 {
-        let unpressed =
+        let unpressed = keys.just_released(KeyCode::LShift) || keys.just_released(KeyCode::RShift);
-            keys.just_released(KeyCode::ShiftLeft) || keys.just_released(KeyCode::ShiftRight);
         keys.reset_all();
         if shifted && !unpressed {
-            keys.press(KeyCode::ShiftLeft);
+            keys.press(KeyCode::LShift);
         }
     }
 }
 
 fn update_input(mut events: EventReader<GamepadEvent>, mut istate: ResMut<InputState>) {
-    for pad_event in events.read() {
+    for pad_event in events.iter() {
         match pad_event {
             GamepadEvent::Button(button_event) => {
                 let GamepadButtonChangedEvent {
@@ -93,6 +92,7 @@ pub struct CyberInputPlugin;
 impl Plugin for CyberInputPlugin {
     fn build(&self, app: &mut App) {
         app.init_resource::<InputState>()
-            .add_systems(Update, (update_input, update_debug_cam));
+            .add_system(update_input)
+            .add_system(update_debug_cam);
     }
 }

src/lights.rs

@@ -2,7 +2,7 @@ use bevy::{pbr::CascadeShadowConfigBuilder, prelude::*};
 
 use crate::planet::PLANET_RADIUS;
 
-pub const LIGHT_RANGE: f32 = 900.0;
+pub const LIGHT_RANGE: f32 = 90.0;
 
 fn spawn_static_lights(
     mut commands: Commands,
@@ -10,37 +10,88 @@ fn spawn_static_lights(
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
     let pink_light = PointLight {
-        intensity: 10_00.0,
+        intensity: 1_00.0,
         range: LIGHT_RANGE,
-        color: Color::WHITE,
+        color: Color::PINK,
-        radius: 10.0,
+        radius: 1.0,
+        shadows_enabled: true,
+        ..Default::default()
+    };
+
+    let blue_light = PointLight {
+        intensity: 1_000.0,
+        range: LIGHT_RANGE,
+        color: Color::BLUE,
+        radius: 1.0,
         shadows_enabled: true,
         ..Default::default()
     };
 
     commands.insert_resource(AmbientLight {
         color: Color::WHITE,
-        brightness: 100.0,
+        brightness: 0.2,
     });
 
-    // let _cascade_shadow_config = CascadeShadowConfigBuilder {
+    let _cascade_shadow_config = CascadeShadowConfigBuilder {
-    //     first_cascade_far_bound: 0.3,
+        first_cascade_far_bound: 0.3,
-    //     maximum_distance: 3.0,
+        maximum_distance: 3.0,
-    //     ..default()
+        ..default()
-    // }
+    }
-    // .build();
+    .build();
 
     // up light
-    commands.spawn(PointLightBundle {
+    commands
-        transform: Transform::from_xyz(0.0, 100.0, 0.0),
+        .spawn(PointLightBundle {
-        point_light: pink_light,
+            transform: Transform::from_xyz(0.0, PLANET_RADIUS + 30.0, 0.0),
-        ..Default::default()
+            point_light: pink_light,
-    });
+            ..Default::default()
+        })
+        .with_children(|builder| {
+            builder.spawn(PbrBundle {
+                mesh: meshes.add(
+                    Mesh::try_from(shape::Icosphere {
+                        radius: 10.0,
+                        subdivisions: 2,
+                    })
+                    .unwrap(),
+                ),
+                material: materials.add(StandardMaterial {
+                    base_color: Color::BLUE,
+                    emissive: Color::PINK,
+                    ..Default::default()
+                }),
+                ..Default::default()
+            });
+        });
+    // down light
+    commands
+        .spawn(PointLightBundle {
+            transform: Transform::from_xyz(0.0, -PLANET_RADIUS - 30.0, 0.0),
+            point_light: blue_light,
+            ..Default::default()
+        })
+        .with_children(|builder| {
+            builder.spawn(PbrBundle {
+                mesh: meshes.add(
+                    Mesh::try_from(shape::Icosphere {
+                        radius: 10.0,
+                        subdivisions: 2,
+                    })
+                    .unwrap(),
+                ),
+                material: materials.add(StandardMaterial {
+                    base_color: Color::PINK,
+                    emissive: Color::BLUE,
+                    ..Default::default()
+                }),
+                ..Default::default()
+            });
+        });
 }
 
 pub struct CyberSpaceLightsPlugin;
 impl Plugin for CyberSpaceLightsPlugin {
     fn build(&self, app: &mut App) {
-        app.add_systems(Startup, spawn_static_lights);
+        app.add_startup_system(spawn_static_lights);
     }
 }

src/main.rs

@@ -21,20 +21,18 @@ fn main() {
             }),
             ..Default::default()
         }))
-        .add_plugins((
+        .add_plugin(CyberPlanetPlugin)
-            CyberPlanetPlugin,
+        .add_plugin(CyberInputPlugin)
-            CyberInputPlugin,
+        .add_plugin(CyberActionPlugin)
-            CyberActionPlugin,
+        .add_plugin(CyberCamPlugin)
-            CyberCamPlugin,
+        .add_plugin(CyberSpaceLightsPlugin)
-            CyberSpaceLightsPlugin,
+        .add_plugin(CyberUIPlugin)
-            CyberUIPlugin,
+        .add_plugin(CyberBikePlugin)
-            CyberBikePlugin,
+        .add_startup_system(disable_mouse_trap)
-        ))
+        .add_system(bevy::window::close_on_esc);
-        .add_systems(Startup, disable_mouse_trap)
-        .add_systems(Update, bevy::window::close_on_esc);
 
     #[cfg(feature = "inspector")]
-    app.add_plugins(CyberGlamorPlugin);
+    app.add_plugin(CyberGlamorPlugin);
 
     app.run();
 }

src/planet.rs

@@ -1,8 +1,14 @@
-use bevy::{prelude::*, render::color::Color};
+use bevy::{
+    prelude::{shape::Icosphere, *},
+    render::{color::Color, mesh::Indices},
+};
 use bevy_rapier3d::prelude::*;
-// use noise::{HybridMulti, NoiseFn, SuperSimplex};
+use hexasphere::shapes::IcoSphere;
+use noise::{HybridMulti, NoiseFn, SuperSimplex};
+use rand::{Rng, SeedableRng};
+use wgpu::PrimitiveTopology;
 
-pub const PLANET_RADIUS: f32 = 2_000.0;
+pub const PLANET_RADIUS: f32 = 4_000.0;
 pub const PLANET_HUE: f32 = 31.0;
 pub const PLANET_SATURATION: f32 = 1.0;
 
@@ -15,10 +21,14 @@ fn spawn_planet(
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
     //let color = Color::rgb(0.74, 0.5334, 0.176);
+    let isphere = Icosphere {
+        radius: PLANET_RADIUS,
+        subdivisions: 88,
+    };
 
-    let (mesh, shape) = gen_planet(2999.9);
+    let (mesh, shape) = gen_planet(isphere);
 
-    let pbody = (RigidBody::Fixed, Transform::from_xyz(0.0, 0.1, 0.0));
+    let pbody = (RigidBody::Fixed, Ccd { enabled: true });
 
     let pcollide = (
         shape,
@@ -27,19 +37,12 @@ fn spawn_planet(
             ..Default::default()
         },
         Restitution::new(0.8),
-        Transform::from_xyz(0.0, 1.0, 0.0),
-        CollisionGroups::default(), // all colliders
-        Ccd { enabled: true },
     );
 
     commands
         .spawn(PbrBundle {
             mesh: meshes.add(mesh),
-            material: materials.add(StandardMaterial {
+            material: materials.add(Color::WHITE.into()),
-                base_color: Color::GREEN,
-                ..Default::default()
-            }),
-            transform: Transform::from_xyz(0.0, 0.1, 0.0),
             ..Default::default()
         })
         .insert(pbody)
@@ -50,7 +53,7 @@ fn spawn_planet(
 pub struct CyberPlanetPlugin;
 impl Plugin for CyberPlanetPlugin {
     fn build(&self, app: &mut App) {
-        app.add_systems(Startup, spawn_planet);
+        app.add_startup_system(spawn_planet);
     }
 }
 
@@ -58,10 +61,82 @@ impl Plugin for CyberPlanetPlugin {
 // utils
 //---------------------------------------------------------------------
 
-fn gen_planet(span: f32) -> (Mesh, Collider) {
+fn gen_planet(sphere: Icosphere) -> (Mesh, Collider) {
-    let mut mesh = Cuboid::new(span, 1.0, span);
+    // straight-up stolen from Bevy's impl of Mesh from Icosphere, so I can do the
+    // displacement before normals are calculated.
+    let generated = IcoSphere::new(sphere.subdivisions, |point| {
+        let inclination = point.y.acos();
+        let azimuth = point.z.atan2(point.x);
 
-    let collider = Collider::cuboid(span / 2.0, 0.5, span / 2.0);
+        let norm_inclination = inclination / std::f32::consts::PI;
+        let norm_azimuth = 0.5 - (azimuth / std::f32::consts::TAU);
 
-    (mesh.mesh(), collider)
+        [norm_azimuth, norm_inclination]
+    });
+
+    let noise = HybridMulti::<SuperSimplex>::default();
+
+    let (mut min, mut max) = (f32::MAX, f32::MIN);
+
+    let noisy_points = generated
+        .raw_points()
+        .iter()
+        .map(|&p| {
+            let disp = (noise.get(p.as_dvec3().into()) * 0.03f64) as f32;
+            let pt = p + (p.normalize() * disp);
+            pt.into()
+        })
+        .collect::<Vec<[f32; 3]>>();
+
+    let points = noisy_points
+        .iter()
+        .map(|&p| (Vec3::from_slice(&p) * sphere.radius).into())
+        .collect::<Vec<[f32; 3]>>();
+
+    for p in &points {
+        let v = Vec3::new(p[0], p[1], p[2]);
+        let v = v.length();
+        min = v.min(min);
+        max = v.max(max);
+    }
+
+    let indices = generated.get_all_indices();
+
+    let mut idxs = Vec::new();
+    for idx in indices.chunks_exact(3) {
+        idxs.push([idx[0], idx[1], idx[2]]);
+    }
+
+    let indices = Indices::U32(indices);
+    let collider = Collider::trimesh(points.iter().map(|p| Vect::from_slice(p)).collect(), idxs);
+
+    let mut mesh = Mesh::new(PrimitiveTopology::TriangleList);
+    mesh.set_indices(Some(indices));
+    mesh.insert_attribute(Mesh::ATTRIBUTE_POSITION, points);
+    //mesh.insert_attribute(Mesh::ATTRIBUTE_UV_0, uvs);
+    mesh.duplicate_vertices();
+    mesh.compute_flat_normals();
+
+    let tri_list = mesh
+        .attribute(Mesh::ATTRIBUTE_POSITION)
+        .unwrap()
+        .as_float3()
+        .unwrap();
+
+    let mut rng = rand::rngs::StdRng::seed_from_u64(57);
+    let mut colors = Vec::new();
+    for _triangle in tri_list.chunks_exact(3) {
+        let l = 0.41;
+        let jitter = rng.gen_range(-0.0..=360.0f32);
+        let h = jitter;
+        let color = Color::hsl(h, PLANET_SATURATION, l).as_linear_rgba_f32();
+        for _ in 0..3 {
+            colors.push(color);
+        }
+    }
+
+    dbg!(&colors.len());
+    mesh.insert_attribute(Mesh::ATTRIBUTE_COLOR, colors);
+
+    (mesh, collider)
 }

src/ui.rs

@@ -1,10 +1,9 @@
-use bevy::{
+use bevy::prelude::{
-    app::{Startup, Update},
+    AlignSelf, App, AssetServer, Color, Commands, Component, Plugin, Query, Res, Style, Text,
-    prelude::{
+    TextBundle, TextSection, TextStyle, Transform, With,
-        AlignSelf, App, AssetServer, Color, Commands, Component, Plugin, Query, Res, Style, Text,
-        TextBundle, TextSection, TextStyle, Transform, With,
-    },
 };
+#[cfg(feature = "inspector")]
+use bevy_inspector_egui::quick::WorldInspectorPlugin;
 use bevy_rapier3d::prelude::Velocity;
 
 use crate::bike::CyberBikeBody;
@@ -43,7 +42,7 @@ fn update_ui(
 ) {
     let mut text = text_query.single_mut();
     let (velocity, xform) = state_query.single();
-    let speed = velocity.linvel.dot(*xform.forward());
+    let speed = velocity.linvel.dot(xform.forward());
     text.sections[0].value = format!("spd: {:.2}", speed);
 }
 
@@ -51,8 +50,9 @@ pub struct CyberUIPlugin;
 
 impl Plugin for CyberUIPlugin {
     fn build(&self, app: &mut App) {
-        //
+        #[cfg(feature = "inspector")]
-        app.add_systems(Startup, setup_ui)
+        app.add_plugin(WorldInspectorPlugin);
-            .add_systems(Update, update_ui);
+
+        app.add_startup_system(setup_ui).add_system(update_ui);
     }
 }