consumable icons

packages/scripts/src/core/blitz/parsePackedSpriteRect.ts

@@ -1,53 +0,0 @@
-const textDecoder = new TextDecoder();
-
-function readFourCC(buffer: Uint8Array, offset: number) {
-  return textDecoder.decode(buffer.subarray(offset, offset + 4));
-}
-
-export function parsePackedSpriteRect(buffer: Uint8Array): number[] | null {
-  if (
-    buffer.length < 12 ||
-    readFourCC(buffer, 0) !== "RIFF" ||
-    readFourCC(buffer, 8) !== "WEBP"
-  ) {
-    return null;
-  }
-
-  const view = new DataView(
-    buffer.buffer,
-    buffer.byteOffset,
-    buffer.byteLength,
-  );
-  let offset = 12;
-
-  while (offset + 8 <= buffer.length) {
-    const chunkId = readFourCC(buffer, offset);
-    const chunkSize = view.getUint32(offset + 4, true);
-    const dataStart = offset + 8;
-    const dataEnd = dataStart + chunkSize;
-
-    if (dataEnd > buffer.length) return null;
-
-    if (chunkId === "extr") {
-      const lines = textDecoder
-        .decode(buffer.subarray(dataStart, dataEnd))
-        .replace(/\0/g, "")
-        .split(/\r?\n/)
-        .map((line) => line.trim().split(/\s+/).map(Number));
-
-      for (const values of lines) {
-        if (values.length < 4) continue;
-        if (!values.slice(0, 4).every(Number.isFinite)) continue;
-        if (values[2] <= 0 || values[3] <= 0) continue;
-
-        return values;
-      }
-
-      return null;
-    }
-
-    offset = dataEnd + (chunkSize % 2);
-  }
-
-  return null;
-}