From 063297b5b67ce2e285f94ce1201b3037c30498fd Mon Sep 17 00:00:00 2001
From: T1ti <40864460+T1ti@users.noreply.github.com>
Date: Thu, 30 May 2024 20:06:45 +0200
Subject: [PATCH] load mtxf ADT chunk, no saving/usage yet. credit Adspartan

---
 src/noggit/MapHeaders.h     | 14 +++++++++-
 src/noggit/MapTile.cpp      | 51 ++++++++++++++++++-------------------
 src/noggit/MapTile.h        |  1 +
 src/noggit/TextureManager.h |  1 +
 src/noggit/texture_set.cpp  | 10 +++++++-
 5 files changed, 49 insertions(+), 28 deletions(-)

diff --git a/src/noggit/MapHeaders.h b/src/noggit/MapHeaders.h
index 43386995..f8512e84 100755
--- a/src/noggit/MapHeaders.h
+++ b/src/noggit/MapHeaders.h
@@ -74,7 +74,7 @@ struct MHDR
   /*020h*/  uint32_t modf;  //WMO Positioning Information
   /*024h*/  uint32_t mfbo;  // tbc, wotlk; only when flags&1
   /*028h*/  uint32_t mh2o;  // wotlk
-  /*02Ch*/  uint32_t mtfx;  // wotlk
+  /*02Ch*/  uint32_t mtxf;  // wotlk
   /*030h*/  uint32_t pad4;
   /*034h*/  uint32_t pad5;
   /*038h*/  uint32_t pad6;
@@ -300,3 +300,15 @@ struct MPHD
   uint32_t something;
   uint32_t unused[6];
 };
+
+struct mtxf_entry
+{
+    uint32_t use_cubemap : 1; // do_not_load_specular_or_height_texture_but_use_cubemap
+    /*
+    uint32_t : 3;
+    uint32_t texture_scale : 4; // MOP+ Texture scale here is not an actual "scale". 
+                                // Default value is 0 (no extra scaling applied). The values are computed as 1 << SMTextureFlags.texture_scale.
+    uint32_t : 24;
+    */
+    uint32_t unused : 31;
+};
\ No newline at end of file
diff --git a/src/noggit/MapTile.cpp b/src/noggit/MapTile.cpp
index 9a445b23..73676990 100755
--- a/src/noggit/MapTile.cpp
+++ b/src/noggit/MapTile.cpp
@@ -125,6 +125,8 @@ void MapTile::finishLoading()
   std::vector<std::string> mModelFilenames;
   std::vector<std::string> mWMOFilenames;
 
+  // std::map<std::string, mtxf_entry> _mtxf_entries;
+
   uint32_t fourcc;
   uint32_t size;
 
@@ -302,34 +304,30 @@ void MapTile::finishLoading()
     }
   }
 
-  // - MTFX ----------------------------------------------
-  /*
-  //! \todo Implement this or just use Terrain Cube maps?
-  Log << "MTFX offs: " << Header.mtfx << std::endl;
-  if(Header.mtfx != 0){
-  Log << "Try to load MTFX" << std::endl;
-  theFile.seek( Header.mtfx + 0x14 );
-
-  theFile.read( &fourcc, 4 );
-  theFile.read( &size, 4 );
-
-  assert( fourcc == 'MTFX' );
-
-
+  // - MTXF ----------------------------------------------
+  if (Header.mtxf != 0)
   {
-  char* lCurPos = reinterpret_cast<char*>( theFile.getPointer() );
-  char* lEnd = lCurPos + size;
-  int tCount = 0;
-  while( lCurPos < lEnd ) {
-  int temp = 0;
-  theFile.read(&temp, 4);
-  Log << "Adding to " << mTextureFilenames[tCount].first << " texture effect: " << temp << std::endl;
-  mTextureFilenames[tCount++].second = temp;
-  lCurPos += 4;
-  }
-  }
+      theFile.seek(Header.mtxf + 0x14);
 
-  }*/
+      theFile.read(&fourcc, 4);
+      theFile.read(&size, 4);
+
+      assert(fourcc == 'MTXF');
+
+      int count = size / 0x4;
+
+      std::vector<mtxf_entry> mtxf_data(count);
+
+      theFile.read(mtxf_data.data(), size);
+
+      for (int i = 0; i < count; ++i)
+      {
+          // _mtxf_entries[mTextureFilenames[i]] = mtxf_data[i];
+          // only save those with flags set
+          if (mtxf_data[i].use_cubemap)
+              _mtxf_entries[mTextureFilenames[i]] = mtxf_data[i];
+      }
+  }
 
   // - Done. ---------------------------------------------
 
@@ -374,6 +372,7 @@ void MapTile::finishLoading()
   }
   // can be cleared after texture sets are loaded in chunks.
   mTextureFilenames.clear();
+  _mtxf_entries.clear();
 
   theFile.close();
 
diff --git a/src/noggit/MapTile.h b/src/noggit/MapTile.h
index 210488af..39f661cf 100755
--- a/src/noggit/MapTile.h
+++ b/src/noggit/MapTile.h
@@ -199,6 +199,7 @@ private:
   std::vector<std::string> mTextureFilenames;
   // std::vector<std::string> mModelFilenames;
   // std::vector<std::string> mWMOFilenames;
+  std::map<std::string, mtxf_entry> _mtxf_entries;
   
   std::vector<uint32_t> uids;
   tsl::robin_map<AsyncObject*, std::vector<SceneObject*>> object_instances; // only includes M2 and WMO. perhaps a medium common ancestor then?
diff --git a/src/noggit/TextureManager.h b/src/noggit/TextureManager.h
index 4b7b8030..7693f656 100755
--- a/src/noggit/TextureManager.h
+++ b/src/noggit/TextureManager.h
@@ -128,6 +128,7 @@ struct scoped_blp_texture_reference
 
   bool operator== (scoped_blp_texture_reference const& other) const;
 
+  bool use_cubemap = false;
 private:
   struct Deleter
   {
diff --git a/src/noggit/texture_set.cpp b/src/noggit/texture_set.cpp
index 1170ab4e..02d12e96 100755
--- a/src/noggit/texture_set.cpp
+++ b/src/noggit/texture_set.cpp
@@ -34,7 +34,15 @@ TextureSet::TextureSet (MapChunk* chunk, BlizzardArchive::ClientFile* f, size_t
     {
       f->read (&tmp_entry_mcly[i], sizeof(ENTRY_MCLY)); // f->read (&_layers_info[i], sizeof(ENTRY_MCLY));
 
-      textures.emplace_back (tile->mTextureFilenames[tmp_entry_mcly[i].textureID], _context);
+      std::string const& texturefilename = tile->mTextureFilenames[tmp_entry_mcly[i].textureID];
+      textures.emplace_back (texturefilename, _context);
+
+      if (tile->_mtxf_entries.contains(texturefilename))
+      {
+          if (tile->_mtxf_entries[texturefilename].use_cubemap)
+              textures.back().use_cubemap = true;
+      }
+
       _layers_info[i].effectID = tmp_entry_mcly[i].effectID;
       _layers_info[i].flags = tmp_entry_mcly[i].flags;
     }