GBM

GBM, or the Glest Binary Map format, is the standard type of map. GBM is limited to 4 players, but can be used on any of Glest's engines, including MegaGlest and the Glest Advanced Engine. Maps in the GBM format are created in the Map Editor.

Header Structure

Version 1 (GBM):

struct MapFileHeader{
   int32 version;
   int32 maxPlayers;
   int32 width;
   int32 height;
   int32 altFactor;
   int32 waterLevel;
   int8 title[128];
   int8 author[128];
   int8 description[256];
};

Version 2 (MGM) GAE:

struct MapFileHeader {
   int32 version;
   int32 maxPlayers;
   int32 width;
   int32 height;
   int32 altFactor;
   int32 waterLevel;
   int8 title[128];
   int8 author[128];
   union {
      int8 description[256];
      struct {
         int8 short_desc[128];
         int32 magic; // 0x01020304 for meta
         int8 meta[124];
      };
   };
};

Or Version 2[.1] (MGM) in MegaGlest, which supports cliffs:

struct MapFileHeader {
   int32 version;
   int32 maxPlayers;
   int32 width;
   int32 height;
   int32 altFactor;
   int32 waterLevel;
   int8 title[128];
   int8 author[128];
   union {
      int8 description[256];
      struct {
         int8 short_desc[128];
         int32 magic; // 0x01020304 for meta
         int32 cliffLevel; 
         int8 meta[120];
      };
   };
};

See Also

• Maps
• Map Editing
• List of Maps

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