Function DeleteLineDefsJoinSectors

roomedit/source/objects.cpp:2395–2441

*/

void DeleteLineDefsJoinSectors (SelPtr *ldlist)
{
   SelPtr cur, slist;
   SHORT  sd1, sd2;
   SHORT  s1, s2;

   /* first, do the tests for all LineDefs */
   for (cur = *ldlist; cur; cur = cur->next)
   {
	  // ObjectsNeeded( OBJ_LINEDEFS, 0);
	  sd1 = LineDefs[ cur->objnum].sidedef1;
	  sd2 = LineDefs[ cur->objnum].sidedef2;
	  if (sd1 < 0 || sd2 < 0)
	  {
		 Beep();
		 Notify("ERROR: LineDef #%d has only one side", cur->objnum);
		 return;
	  }
	  // ObjectsNeeded( OBJ_SIDEDEFS, 0);
	  s1 = SideDefs[ sd1].sector;
	  s2 = SideDefs[ sd2].sector;
	  if (s1 < 0 || s2 < 0)
	  {
		 Beep();
		 Notify("ERROR: LineDef #%d has two sides, but one side is not bound "
				"to any Sector", cur->objnum);
		 return;
	  }
   }

   /* then join the Sectors and delete the LineDefs */
   for (cur = *ldlist; cur; cur = cur->next)
   {
	  // ObjectsNeeded( OBJ_LINEDEFS, 0);
	  sd1 = LineDefs[ cur->objnum].sidedef1;
	  sd2 = LineDefs[ cur->objnum].sidedef2;
	  // ObjectsNeeded( OBJ_SIDEDEFS, 0);
	  s1 = SideDefs[ sd1].sector;
	  s2 = SideDefs[ sd2].sector;
	  slist = NULL;
	  SelectObject( &slist, s2);
	  SelectObject( &slist, s1);
	  MergeSectors( &slist);
	  ForgetSelection( &slist);
   }
   DeleteObjects( OBJ_LINEDEFS, ldlist);
}