DxLib engine hook

texthook/engine/engine.cc

@@ -21728,6 +21728,54 @@ bool InsertNamcoPS2Hook()
 }
 #endif // 0
 
+bool DxLibFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
+{
+  auto text = reinterpret_cast<LPSTR>(data);
+  auto len = reinterpret_cast<size_t *>(size);
+
+  StringCharReplacer(text, len, "%N", 2, ' ');
+  StringFilter(text, len, "%K", 2);
+  StringFilter(text, len, "%P", 2);
+
+  return true;
+}
+
+bool InsertDxLibHook() 
+{
+  //by Blu3train
+    /*
+    * Sample games:
+    * https://vndb.org/v7849
+    * https://vndb.org/v10231
+    */
+  const BYTE bytes[] = {
+    0xF7, 0xC6, XX4,            // test esi,00000003      << hook here
+    0x75, XX,                   // jne BookofShadows.exe+15FE54
+    0x8B, 0xD9,                 // mov ebx,ecx
+    0xC1, 0xE9, 0x02,           // shr ecx,02
+    0x75, XX,                   // jne BookofShadows.exe+15FEAE
+    0xEB, XX                    // jmp BookofShadows.exe+15FE76
+  };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:DxLib: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr;
+  //hp.offset = pusha_edx_off -4;
+  hp.offset = pusha_esi_off -4;
+  hp.index = 0;
+  hp.type = USING_STRING;
+  hp.filter_fun = DxLibFilter;
+  ConsoleOutput("vnreng: INSERT DxLib");
+  NewHook(hp, "DxLib");
+  return true;
+}
+
 } // namespace Engine
 
 // EOF

texthook/engine/engine.h

@@ -156,6 +156,7 @@ bool InsertWillPlusHook();      // WillPlus: Rio.arc
 bool InsertWolfHook();          // Wolf: Data.wolf
 bool InsertYukaSystem2Hook();   // YukaSystem2: *.ykc
 bool InsertYurisHook();         // YU-RIS: *.ypf
+bool InsertDxLibHook();         // DxLib: *.bcx
 
 void InsertBrunsHook();         // Bruns: bruns.exe
 void InsertIronGameSystemHook();// IroneGameSystem: igs_sample.exe

texthook/engine/match32.cc

@@ -370,6 +370,10 @@ bool DetermineEngineByFile3()
 
 bool DetermineEngineByFile4()
 {
+  if (Util::CheckFile(L"*.bcx")) {
+    if (InsertDxLibHook())
+      return true;
+  }
   if (Util::CheckFile(L"EAGLS.dll")) { // jichi 3/24/2014: E.A.G.L.S
     //ConsoleOutput("vnreng: IGNORE EAGLS");
     InsertEaglsHook();