feat: Blender-authored roadside districts that rise per chapter

src/scene/world/environment.ts

@@ -6,6 +6,7 @@ import type { SceneBuildContext, SceneGeneration } from '@/scene/types';
 import { renderQualityFor } from '@/scene/render-quality';
 import { createHorizonAir } from '@/scene/world/horizon-air';
 import { createExpressway } from '@/scene/world/expressway';
+import { createDistricts } from '@/scene/world/districts';
 import { createSignStage } from '@/scene/world/sign-stage';
 import { usesRoadsideSign } from '@/scene/world/sign-layout';
 import { createSpeedWake } from '@/scene/world/speed-wake';
@@ -116,6 +117,7 @@ export async function createProceduralSceneGeneration(
   const terrain = createTerrain(context.resources, quality);
   const speedWake = createSpeedWake(context.resources);
   const expressway = createExpressway(context.resources, quality);
+  const districts = createDistricts(context.resources, quality, context.signal);
   const signStage = createSignStage(context.resources);
   const sun = createSun(context.resources);
   const horizonAir = createHorizonAir(context.resources);
@@ -132,6 +134,7 @@ export async function createProceduralSceneGeneration(
     atmosphere.group,
     road.group,
     expressway.group,
+    districts.group,
     terrain.group,
     sun.group,
     horizonAir.group,
@@ -306,6 +309,13 @@ export async function createProceduralSceneGeneration(
         snapshot.activeSectionId,
         deltaSeconds,
       );
+      districts.update(
+        driveDistance,
+        response.roadEnergy,
+        snapshot.activeSectionId,
+        atmosphericTime,
+        deltaSeconds,
+      );
       terrain.update(
         driveDistance,
         visualSpeed,