Untested fnt format preprocessor

hubol · Jan 15, 2024 · e882587 · e882587
1 parent 5c4428a
commit e882587
Showing 1 changed file with 12 additions and 2 deletions.
diff --git a/src/lib/pixi/create-bitmap-font-factory.ts b/src/lib/pixi/create-bitmap-font-factory.ts
@@ -1,7 +1,17 @@
 import { BitmapFont, Texture } from "pixi.js";
 
 export async function createBitmapFontFactory(fntUrl: string) {
-    const fntData = await fetch(fntUrl).then(x => x.text());
+    const fntData = await fetch(fntUrl).then(x => x.text()).then(preprocessFntText);
 
     return (texture: Texture) => BitmapFont.install(fntData, texture);
-}
+}
+
+const atSignRegex = /(?:@(.))/gm;
+const atSignSubstitution = (_: string, y: string) => String(y.charCodeAt(0));
+
+// Allows writing e.g. @a and replacing with 97
+function preprocessFntText(fntText: string) {
+    if (!fntText.includes("info NeedsPreprocessing"))
+        return fntText;
+    return fntText.replace(atSignRegex, atSignSubstitution)
+}