add spotlights to mirrors (slow T_T, but faster than ray tracing)

src/actor.rs

@@ -168,6 +168,8 @@ pub struct MessageOnVehicleEntry(pub String);
 #[derive(Component)]
 pub struct PlayersFlashLight;
 #[derive(Component)]
+pub struct MirrorLight;
+#[derive(Component)]
 pub struct WantsMaxRotation(pub f64);
 #[derive(Component)]
 pub struct WantsMaxVelocity(pub f64);

src/cmd.rs

@@ -101,6 +101,7 @@ struct ParserState {
     is_planet: bool,
     is_point_of_interest: bool,
     is_tidally_locked: bool,
+    is_mirror: bool,
     orbit_distance: Option<f64>,
     orbit_object_id: Option<String>,
     orbit_phase: Option<f64>,
@@ -163,6 +164,7 @@ impl Default for ParserState {
             is_planet: false,
             is_point_of_interest: false,
             is_tidally_locked: false,
+            is_mirror: false,
             orbit_distance: None,
             orbit_object_id: None,
             orbit_phase: None,
@@ -442,6 +444,9 @@ pub fn load_defs(mut ew_spawn: EventWriter<SpawnEvent>) {
             ["sphere", "yes"] => {
                 state.is_sphere = true;
             }
+            ["mirror", "yes"] => {
+                state.is_mirror = true;
+            }
             ["id", id] => {
                 state.id = id.to_string();
             }
@@ -915,6 +920,9 @@ fn spawn_scenes(
                             state.angular_momentum = DVec3::ZERO;
                         }
 
+                        // command: mirror yes
+                        state.is_mirror = true;
+
                         // command: scale 10.0
                         state.model_scale = 10.0;
 
@@ -1239,6 +1247,32 @@ fn spawn_entities(
         if !state.ar_models.is_empty() {
             actor.insert(hud::AugmentedRealityOverlayBroadcaster);
         }
+        if state.is_mirror {
+            actor.with_children(|builder| {
+                // TODO: rotate the light appropriately
+                builder.spawn((
+                    world::DespawnOnPlayerDeath,
+                    actor::MirrorLight,
+                    SpotLightBundle {
+                        transform: Transform {
+                            translation: Vec3::new(0.0, 0.0, 1.0),
+                            rotation: Quat::from_rotation_y(180f32.to_radians()),
+                            ..default()
+                        },
+                        spot_light: SpotLight {
+                            intensity: 2e7,
+                            color: Color::WHITE,
+                            shadows_enabled: false,
+                            inner_angle: PI32 / 16.0,
+                            outer_angle: PI32 / 13.0,
+                            range: 1000.0,
+                            ..default()
+                        },
+                        ..default()
+                    },
+                ));
+            });
+        }
         if state.is_player {
             actor.with_children(|builder| {
                 builder.spawn((