Optimize initial loading performance

src/game/data/portraitAssets.ts

@@ -56,6 +56,11 @@ export const portraitAssets: Record<string, string> = Object.fromEntries(
   Object.entries(portraitModules).map(([path, url]) => [fileSlugFromPath(path), url])
 );
 
+export type PortraitAssetEntry = {
+  textureKey: string;
+  url: string;
+};
+
 export function portraitSlugForKey(key: string) {
   return legacyPortraitSlugs[key] ?? camelToKebab(key);
 }
@@ -65,6 +70,18 @@ export function portraitTextureKey(key: string) {
   return portraitAssets[slug] ? `portrait-${slug}` : undefined;
 }
 
+export function portraitAssetEntriesForKey(key: string): PortraitAssetEntry[] {
+  const slug = portraitSlugForKey(key);
+  const prefix = `${slug}-`;
+  return Object.keys(portraitAssets)
+    .filter((candidate) => candidate === slug || candidate.startsWith(prefix))
+    .sort()
+    .map((candidate) => ({
+      textureKey: `portrait-${candidate}`,
+      url: portraitAssets[candidate]
+    }));
+}
+
 export function portraitTextureKeysForKey(key: string) {
   const slug = portraitSlugForKey(key);
   const prefix = `${slug}-`;