Sekai Projec engine hooks

texthook/engine/engine.cc

@@ -21728,6 +21728,75 @@ bool InsertNamcoPS2Hook()
 }
 #endif // 0
 
+bool InsertSekaiProject1Hook() 
+{
+  //by Blu3train
+  /*
+  * Sample games:
+  * https://vndb.org/r21174
+  */
+  const BYTE bytes[] = {
+    0xC7, 0x45, 0xDC, 0x00, 0x00, 0x00, 0x00,   // mov [ebp-24],00000000        << hook here
+    0xEB, 0x09,                                 // jmp "SCHOOLDAYS HQ.exe"+4C821
+    0x8B, 0x45, 0xDC,                           // mov eax,[ebp-24]
+    0x83, 0xC0, 0x01,                           // add eax,01
+    0x89, 0x45, 0xDC                            // mov [ebp-24],eax
+  };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:SekaiProject1: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr;
+  hp.offset = 0x4 * 21; //arg21
+  hp.index = 0;
+  hp.type = USING_UNICODE | USING_STRING | NO_CONTEXT;
+  ConsoleOutput("vnreng: INSERT SekaiProject1");
+  NewHook(hp, "SekaiProject1");
+  return true;
+}
+
+bool InsertSekaiProject2Hook() 
+{
+  //by Blu3train
+  /*
+  * Sample games:
+  * https://vndb.org/r39989
+  */
+  const BYTE bytes[] = {
+    0xCC,                    // int 3 
+    0x8B, 0x44, 0x24, 0x04,  // mov eax,[esp+04]     << hook here
+    0x83, 0xEC, 0x14,        // sub esp,14
+    0x55,                    // push ebp
+    0x56,                    // push esi
+    0x57,                    // push edi
+    0x8B, 0xF9               // mov edi,ecx
+  };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:SekaiProject2: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr + 1;
+  hp.offset = 0x4 * 1; //arg1
+  hp.index = 0;
+  hp.type = USING_UNICODE | USING_STRING | NO_CONTEXT;
+  ConsoleOutput("vnreng: INSERT SekaiProject2");
+  NewHook(hp, "SekaiProject2");
+  return true;
+}
+
+bool InsertSekaiProjectHooks()
+{ return InsertSekaiProject1Hook() || InsertSekaiProject2Hook();}
+
 } // namespace Engine
 
 // EOF

texthook/engine/engine.h

@@ -165,6 +165,7 @@ void InsertRealliveHook();      // RealLive: RealLive*.exe
 void InsertStuffScriptHook();   // Stuff: *.mpk
 bool InsertTinkerBellHook();    // TinkerBell: arc00.dat
 bool InsertWaffleHook();        // WAFFLE: cg.pak
+bool InsertSekaiProjectHooks(); // Sekai Project: Packs/*.GPK
 
 // CIRCUS: avdata/
 bool InsertCircusHook1();

texthook/engine/match32.cc

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