bool Scenario::ParseScenario(buffer &chk)
{
   caching = false;
   u32 chkSize = chk.size();

   u32 position = 0,
       nextPosition = 0;

   bool parsing = true;

   do
   {
       if ( position + 8 < chkSize ) // Valid section header
       {
           if ( ParseSection(chk, position, nextPosition) )
               position = nextPosition;
           else // Severe data handling issue or out of memory
               return false;
       }
       else if ( position < chkSize ) // Partial section header
       {
           tailLength = (u8)(chkSize - position);
           if ( !chk.getArray<u8>(tailData, position, tailLength) )
               return false;

           mapIsProtected = true;
           parsing = false;
       }
       else if ( position > chkSize ) // Oversized finish
       {
           mapIsProtected = true;
           parsing = false;
       }
       else // Natural finish (position == chkSize)
           parsing = false;

   } while ( parsing );

   // Pre-cache mergings/corrections
   correctMTXM();

   // Cache sections
   CacheSections();
   caching = true;

   return true;
}

bool Scenario::ParseSection(buffer &chk, u32 position, u32 &nextPosition)
{
   u32 sectionId = 0;
   s32 sectionSize = 0;

   if ( chk.get<u32>(sectionId, position) &&      // Get sectionId/title
        chk.get<s32>(sectionSize, position + 4) ) // Get section size
   {
       nextPosition = position + 8 + sectionSize;
   }
   else
       return false; // Unexpected read faliure

   if ( sectionSize >= 0 ) // Normal section
   {
       auto newSection = AddSection(sectionId);
       return nextPosition >= position + 8 && // Check for addition overflow
              (nextPosition > chk.size() || // Check for oversized
               sectionSize == 0 || // Check for empty section
               newSection->extract(chk, position+8, sectionSize)); // Move data to this section
   }
   else if ( sectionSize < 0 ) // Jump section
   {
       return nextPosition < position + 8 && // Check for addition underflow
              nextPosition != 0;             // Check for loop (right now it just checks for position to zero)
   }
   return true; // sectionSize == 0
}