From 59f7dd7c15961fd883a309c4cbce9c95e318c59c Mon Sep 17 00:00:00 2001
From: 3Shain <san3shain@outlook.com>
Date: Wed, 23 Oct 2024 09:00:32 +0800
Subject: [PATCH] feat: update game version detection

---
 src/clients/mhy/unity.ts | 60 ++++++++++++++++++++++++++++------------
 1 file changed, 42 insertions(+), 18 deletions(-)

diff --git a/src/clients/mhy/unity.ts b/src/clients/mhy/unity.ts
index 3b2cac0..12b7668 100644
--- a/src/clients/mhy/unity.ts
+++ b/src/clients/mhy/unity.ts
@@ -27,30 +27,54 @@ export async function getGameVersion2019(gameDataDir: string) {
   const view = new Uint8Array(await readBinary(ggmPath));
   const index = binaryPatternSearch(
     view,
-    [0x63, 0x61, 0x74, 0x65, 0x67, 0x6f, 0x72, 0x79, 0x2e, 0x67]
+    [0x63, 0x61, 0x74, 0x65, 0x67, 0x6f, 0x72, 0x79]
   );
   if (index == -1) {
     throw new Error("pattern not found"); //FIXME
   } else {
     let str = "";
     let offset = 0;
-    for (let i = 0; i < 3; i++) {
-      for (;;) {
-        const w = view[index + 0x40 + offset];
-        if (w - 48 == -2) {
-          // dot
-          str += ".";
-          offset++;
-          break;
-        } else if (w - 48 >= 0 && w - 48 < 10) {
-          // decimal
-          str += String.fromCharCode(w);
-          offset++;
-          continue;
-        } else if (i == 2) {
-          return str;
-        } else {
-          throw new Error("Falied to parse version");
+    try {
+      for (let i = 0; i < 3; i++) {
+        for (;;) {
+          const w = view[index + 0x40 + offset];
+          if (w - 48 == -2) {
+            // dot
+            str += ".";
+            offset++;
+            break;
+          } else if (w - 48 >= 0 && w - 48 < 10) {
+            // decimal
+            str += String.fromCharCode(w);
+            offset++;
+            continue;
+          } else if (i == 2) {
+            return str;
+          } else {
+            throw new Error("Falied to parse version");
+          }
+        }
+      }
+    } catch {
+      // second attempt
+      for (let i = 0; i < 3; i++) {
+        for (;;) {
+          const w = view[index + 0x35 + offset];
+          if (w - 48 == -2) {
+            // dot
+            str += ".";
+            offset++;
+            break;
+          } else if (w - 48 >= 0 && w - 48 < 10) {
+            // decimal
+            str += String.fromCharCode(w);
+            offset++;
+            continue;
+          } else if (i == 2) {
+            return str;
+          } else {
+            throw new Error("Falied to parse version");
+          }
         }
       }
     }