From aa21927716341a67ca0462314d65d5eabaa7c3e7 Mon Sep 17 00:00:00 2001
From: Blu3train <frtempra@gmail.com>
Date: Wed, 31 May 2023 20:36:17 +0200
Subject: [PATCH 1/2] Kaleido ADV Workshop engine hooks

---
 texthook/engine/engine.cc  | 52 ++++++++++++++++++++++++++++++++++++++
 texthook/engine/engine.h   |  1 +
 texthook/engine/match32.cc |  4 +++
 3 files changed, 57 insertions(+)

diff --git a/texthook/engine/engine.cc b/texthook/engine/engine.cc
index c2c7abc..1a23c41 100644
--- a/texthook/engine/engine.cc
+++ b/texthook/engine/engine.cc
@@ -21728,6 +21728,58 @@ bool InsertNamcoPS2Hook()
 }
 #endif // 0
 
+bool KaleidoFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
+{
+  auto text = reinterpret_cast<LPSTR>(data);
+  auto len = reinterpret_cast<size_t *>(size);
+
+  // Unofficial eng TL with garbage newline spaces
+  StringCharReplacer(text, len, " \\n ", 4, ' ');
+  StringCharReplacer(text, len, " \\n", 3, ' ');
+  StringCharReplacer(text, len, "\\n", 2, ' ');
+  StringCharReplacer(text, len, "\xEF\xBC\x9F", 3, '?');
+  
+  return true;
+}
+
+bool InsertKaleidoHook() 
+{
+  //by Blu3train
+    /*
+    * Sample games:
+    * https://vndb.org/v29889
+    */
+  const BYTE bytes[] = {
+    0xFF, 0x75, 0xD4,              // push [ebp-2C]
+    0xE8, XX4,                     // call 5toubun.exe+1DD0
+    0x83, 0xC4, 0x0C,              // add esp,0C
+    0x8A, 0xC3,                    // mov al,bl
+    0x8B, 0x4D, 0xF4,              // mov ecx,[ebp-0C]
+    0x64, 0x89, 0x0D, XX4,         // mov fs:[00000000],ecx
+    0x59                           // pop ecx          << hook here
+  };
+  enum { addr_offset = sizeof(bytes) - 1 };
+
+  ULONG range = min(processStopAddress - processStartAddress, MAX_REL_ADDR);
+  ULONG addr = MemDbg::findBytes(bytes, sizeof(bytes), processStartAddress, processStartAddress + range);
+  if (!addr) {
+    ConsoleOutput("vnreng:Kaleido: pattern not found");
+    return false;
+  }
+
+  HookParam hp = {};
+  hp.address = addr + addr_offset;
+  hp.offset = pusha_esi_off -4;
+  hp.index = 0;
+  hp.split = 0x0C;
+  hp.split_index = 0;
+  hp.type = USING_STRING | USING_SPLIT ;
+  hp.filter_fun = KaleidoFilter;
+  ConsoleOutput("vnreng: INSERT Kaleido");
+  NewHook(hp, "Kaleido");
+  return true;
+}
+
 } // namespace Engine
 
 // EOF
diff --git a/texthook/engine/engine.h b/texthook/engine/engine.h
index 5e167b2..14b5016 100644
--- a/texthook/engine/engine.h
+++ b/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 InsertKaleidoHook();       // Kaleido ADV Workshop: windata/script_body.bin
 
 // CIRCUS: avdata/
 bool InsertCircusHook1();
diff --git a/texthook/engine/match32.cc b/texthook/engine/match32.cc
index fffc4c7..a715cfa 100644
--- a/texthook/engine/match32.cc
+++ b/texthook/engine/match32.cc
@@ -370,6 +370,10 @@ bool DetermineEngineByFile3()
 
 bool DetermineEngineByFile4()
 {
+  if (Util::CheckFile(L"windata/script_body.bin")) {
+    if (InsertKaleidoHook())
+      return true;
+  }
   if (Util::CheckFile(L"EAGLS.dll")) { // jichi 3/24/2014: E.A.G.L.S
     //ConsoleOutput("vnreng: IGNORE EAGLS");
     InsertEaglsHook();

From 2ddc7830827c40a8e2fadf398d55dc82600d6433 Mon Sep 17 00:00:00 2001
From: Blu3train <frtempra@gmail.com>
Date: Fri, 2 Jun 2023 10:42:39 +0200
Subject: [PATCH 2/2] Modified for compatibility with Japanese language

---
 texthook/engine/engine.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/texthook/engine/engine.cc b/texthook/engine/engine.cc
index 1a23c41..ca2bea8 100644
--- a/texthook/engine/engine.cc
+++ b/texthook/engine/engine.cc
@@ -21737,7 +21737,6 @@ bool KaleidoFilter(LPVOID data, DWORD *size, HookParam *, BYTE)
   StringCharReplacer(text, len, " \\n ", 4, ' ');
   StringCharReplacer(text, len, " \\n", 3, ' ');
   StringCharReplacer(text, len, "\\n", 2, ' ');
-  StringCharReplacer(text, len, "\xEF\xBC\x9F", 3, '?');
   
   return true;
 }
@@ -21748,6 +21747,7 @@ bool InsertKaleidoHook()
     /*
     * Sample games:
     * https://vndb.org/v29889
+    * https://vndb.org/r56675
     */
   const BYTE bytes[] = {
     0xFF, 0x75, 0xD4,              // push [ebp-2C]
@@ -21773,7 +21773,7 @@ bool InsertKaleidoHook()
   hp.index = 0;
   hp.split = 0x0C;
   hp.split_index = 0;
-  hp.type = USING_STRING | USING_SPLIT ;
+  hp.type = USING_UTF8 | USING_STRING | USING_SPLIT ;
   hp.filter_fun = KaleidoFilter;
   ConsoleOutput("vnreng: INSERT Kaleido");
   NewHook(hp, "Kaleido");