add "wants norotation" command to satellite and icarus

src/actor.rs

@@ -1,5 +1,6 @@
 use bevy::prelude::*;
 use bevy_xpbd_3d::prelude::*;
+use bevy::math::DVec3;
 use crate::{actor, audio, chat, nature, settings};
 
 pub const ENGINE_SPEED_FACTOR: f32 = 30.0;
@@ -11,6 +12,7 @@ impl Plugin for ActorPlugin {
     fn build(&self, app: &mut App) {
         app.add_systems(FixedUpdate, (
             update_physics_lifeforms,
+            handle_wants_norotation,
         ));
         app.add_systems(Update, (
             handle_input,
@@ -59,6 +61,7 @@ impl Default for Actor {
 #[derive(Component)] pub struct InConversationWithPlayer;
 #[derive(Component)] pub struct ActorEnteringVehicle;
 #[derive(Component)] pub struct ActorVehicleBeingEntered;
+#[derive(Component)] pub struct WantsNoRotation;
 
 #[derive(Component)]
 pub struct LifeForm {
@@ -294,3 +297,22 @@ fn handle_collisions(
         }
     }
 }
+
+fn handle_wants_norotation(
+    time: Res<Time>,
+    mut q_v_ang: Query<(&mut AngularVelocity, &Engine), With<WantsNoRotation>>,
+) {
+    let d = time.delta_seconds();
+    for (mut v_ang, engine) in &mut q_v_ang {
+        let total = v_ang.0.length();
+        if total <= 0.0001 {
+            if total > 0.0 {
+                v_ang.0 = DVec3::splat(0.0);
+            }
+        }
+        else {
+            let angular_slowdown: f64 = (2.0 - engine.reaction_wheels.powf(0.01).clamp(1.001, 1.1)) as f64;
+            v_ang.0 *= angular_slowdown;
+        }
+    }
+}

src/commands.rs

@@ -49,6 +49,7 @@ struct ParserState {
     is_suited: bool,
     is_vehicle: bool,
     has_physics: bool,
+    wants_norotation: bool,
     collider_is_mesh: bool,
     thrust_forward: f32,
     thrust_sideways: f32,
@@ -99,6 +100,7 @@ impl Default for ParserState {
             is_suited: false,
             is_vehicle: false,
             has_physics: true,
+            wants_norotation: false,
             collider_is_mesh: false,
             thrust_forward: default_engine.thrust_forward,
             thrust_sideways: default_engine.thrust_forward,
@@ -422,6 +424,9 @@ pub fn load_defs(
                     continue;
                 }
             }
+            ["wants", "norotation"] => {
+                state.wants_norotation = true;
+            }
 
             // Parsing chats
             ["chat", chat_name] => {
@@ -612,6 +617,9 @@ fn spawn_entities(
                     ..default()
                 });
             }
+            if state.wants_norotation {
+                actor.insert(actor::WantsNoRotation);
+            }
             if let Some(color) = state.light_color {
                 actor.insert(PointLightBundle {
                     point_light: PointLight {

src/defs.txt

@@ -90,6 +90,8 @@ actor 3000 0 0 moonlet
 actor -200 -110 1000 satellite
     relativeto player
     scale 40
+    wants norotation
+    thrust 0 0 0 300 1
     collider capsule 7.5 1
     rotationy 0.5
     angularmomentum 0 0 0
@@ -208,6 +210,8 @@ actor 70 -25 -60 suit
     mass 200.0
     collider capsule 2 1
     angularmomentum 0.1 0.2 0.1
+    thrust 1.2 1 1 3 1.5
+    wants norotation
     pronoun it
     chat hi_icarus
         name Icarus