feat: Blender-authored roadside districts that rise per chapter

tests/performance/budgets.test.ts

@@ -62,6 +62,7 @@ describe('release budgets', () => {
     expect(classifyArtifact('assets/index-a.js', 'import("./environment-b.js")')).toBe('initial-application-js');
     expect(classifyArtifact('assets/environment-b.js', 'three scene')).toBe('first-live-scene');
     expect(classifyArtifact('assets/nightdrive-grand-tourer-a.glb', '')).toBe('first-live-scene');
+    expect(classifyArtifact('assets/nightdrive-districts-a.glb', '')).toBe('first-live-scene');
     expect(classifyArtifact('assets/nightdrive-main.opus', '')).toBe('soundtrack-audio');
     expect(classifyArtifact('assets/nightdrive-intro.mp3', '')).toBe('soundtrack-audio');
     expect(classifyArtifact('assets/nightdrive-afterglow.opus', '')).toBe('soundtrack-audio');

tests/unit/districts.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+import { readFileSync } from "node:fs";
+import { DISTRICT_PRESENCE } from "@/scene/world/districts";
+
+const provenance = JSON.parse(
+  readFileSync("assets/blender/districts/nightdrive-districts.asset.json", "utf8"),
+) as { pieces: string[]; triangles: number };
+
+describe("roadside districts", () => {
+  it("raises every authored piece in at least one chapter and nothing else", () => {
+    expect(Object.keys(DISTRICT_PRESENCE).sort()).toEqual(provenance.pieces);
+    for (const presence of Object.values(DISTRICT_PRESENCE)) {
+      const strengths = Object.values(presence);
+      expect(strengths.length).toBeGreaterThan(0);
+      for (const strength of strengths) {
+        expect(strength).toBeGreaterThan(0);
+        expect(strength).toBeLessThanOrEqual(1);
+      }
+    }
+  });
+
+  it("keeps the opening and the destination clear of mid-route districts", () => {
+    for (const [piece, presence] of Object.entries(DISTRICT_PRESENCE)) {
+      expect(presence.start, piece).toBeUndefined();
+      if (piece !== "arch") expect(presence.contact, piece).toBeUndefined();
+    }
+  });
+
+  it("stays a light kit", () => {
+    expect(provenance.triangles).toBeLessThan(8000);
+  });
+});