Vmap: Introduce skipping of antiportals and unreachable mogp (#26331)

* Vmap: Introduce skipping of antiportals and unreachable mogp

* Reduce differences with master branch

* Update VMAP and MMAP versions

* Update MMAPs version

Co-authored-by: jackpoz <giacomopoz@gmail.com>

5 files changed, 33 insertions, 6 deletions

diff --git a/src/common/Collision/Maps/MapDefines.h b/src/common/Collision/Maps/MapDefines.h
index bf35595af1d..6e7aa4410e5 100644
--- a/src/common/Collision/Maps/MapDefines.h
+++ b/src/common/Collision/Maps/MapDefines.h
@@ -22,7 +22,7 @@
 #include "DetourNavMesh.h"
 
 const uint32 MMAP_MAGIC = 0x4d4d4150; // 'MMAP'
-#define MMAP_VERSION 14
+#define MMAP_VERSION 15
 
 struct MmapTileHeader
 {
diff --git a/src/common/Collision/VMapDefinitions.h b/src/common/Collision/VMapDefinitions.h
index 35215128a9d..a2702b32609 100644
--- a/src/common/Collision/VMapDefinitions.h
+++ b/src/common/Collision/VMapDefinitions.h
@@ -24,8 +24,8 @@
 
 namespace VMAP
 {
-    const char VMAP_MAGIC[] = "VMAP_4.7";
-    const char RAW_VMAP_MAGIC[] = "VMAP047";                // used in extracted vmap files with raw data
+    const char VMAP_MAGIC[] = "VMAP_4.8";
+    const char RAW_VMAP_MAGIC[] = "VMAP048";                // used in extracted vmap files with raw data
     const char GAMEOBJECT_MODELS[] = "GameObjectModels.dtree";
 
     // defined in TileAssembler.cpp currently...
diff --git a/src/tools/vmap4_extractor/vmapexport.cpp b/src/tools/vmap4_extractor/vmapexport.cpp
index 8c0e59e8f9d..23223a9a212 100644
--- a/src/tools/vmap4_extractor/vmapexport.cpp
+++ b/src/tools/vmap4_extractor/vmapexport.cpp
@@ -144,6 +144,7 @@ bool ExtractSingleWmo(std::string& fname)
     WMODoodadData& doodads = WmoDoodads[plain_name];
     std::swap(doodads, froot.DoodadData);
     int Wmo_nVertices = 0;
+    uint32 groupCount = 0;
     //printf("root has %d groups\n", froot->nGroups);
     if (froot.nGroups !=0)
     {
@@ -161,7 +162,11 @@ bool ExtractSingleWmo(std::string& fname)
                 break;
             }
 
+            if (fgroup.ShouldSkip(&froot))
+                continue;
+
             Wmo_nVertices += fgroup.ConvertToVMAPGroupWmo(output, preciseVectorData);
+            ++groupCount;
             for (uint16 groupReference : fgroup.DoodadReferences)
             {
                 if (groupReference >= doodads.Spawns.size())
@@ -178,6 +183,8 @@ bool ExtractSingleWmo(std::string& fname)
 
     fseek(output, 8, SEEK_SET); // store the correct no of vertices
     fwrite(&Wmo_nVertices,sizeof(int),1,output);
+    // store the correct no of groups
+    fwrite(&groupCount, sizeof(uint32), 1, output);
     fclose(output);
 
     // Delete the extracted file in the case of an error
diff --git a/src/tools/vmap4_extractor/wmo.cpp b/src/tools/vmap4_extractor/wmo.cpp
index 13900f9b80d..beb48e231a6 100644
--- a/src/tools/vmap4_extractor/wmo.cpp
+++ b/src/tools/vmap4_extractor/wmo.cpp
@@ -106,6 +106,11 @@ bool WMORoot::open()
             DoodadData.Spawns.resize(size / sizeof(WMO::MODD));
             f.read(DoodadData.Spawns.data(), size);
         }
+        else if (!strcmp(fourcc, "MOGN"))
+        {
+            GroupNames.resize(size);
+            f.read(GroupNames.data(), size);
+        }
         /*
         else if (!strcmp(fourcc,"MOTX"))
         {
@@ -113,9 +118,6 @@ bool WMORoot::open()
         else if (!strcmp(fourcc,"MOMT"))
         {
         }
-        else if (!strcmp(fourcc,"MOGN"))
-        {
-        }
         else if (!strcmp(fourcc,"MOGI"))
         {
         }
@@ -498,6 +500,22 @@ uint32 WMOGroup::GetLiquidTypeId(uint32 liquidTypeId)
     return liquidTypeId;
 }
 
+bool WMOGroup::ShouldSkip(WMORoot const* root) const
+{
+    // skip unreachable
+    if (mogpFlags & 0x80)
+        return true;
+
+    // skip antiportals
+    if (mogpFlags & 0x4000000)
+        return true;
+
+    if (groupName < int32(root->GroupNames.size()) && !strcmp(&root->GroupNames[groupName], "antiportal"))
+        return true;
+
+    return false;
+}
+
 WMOGroup::~WMOGroup()
 {
     delete [] MOPY;
diff --git a/src/tools/vmap4_extractor/wmo.h b/src/tools/vmap4_extractor/wmo.h
index a00e26b91a1..f4d98cfebf6 100644
--- a/src/tools/vmap4_extractor/wmo.h
+++ b/src/tools/vmap4_extractor/wmo.h
@@ -84,6 +84,7 @@ public:
     float bbcorn1[3];
     float bbcorn2[3];
 
+    std::vector<char> GroupNames;
     WMODoodadData DoodadData;
     std::unordered_set<uint32> ValidDoodadNames;
 
@@ -153,6 +154,7 @@ public:
     bool open(WMORoot* rootWMO);
     int ConvertToVMAPGroupWmo(FILE* output, bool preciseVectorData);
     uint32 GetLiquidTypeId(uint32 liquidTypeId);
+    bool ShouldSkip(WMORoot const* root) const;
 };
 
 namespace MapObject