prj/cam/libsrc/portal/wrfunc.h

   1 /*
   2 @Copyright Looking Glass Studios, Inc.
   3 1996,1997,1998,1999,2000 Unpublished Work.
   4 */
   5
   6 // $Header: r:/t2repos/thief2/libsrc/portold/wrfunc.h,v 1.9 1998/02/11 11:38:53 MAT Exp $
   7
   8 // World Representation Functions
   9
  10 #ifndef __WRFUNC_H
  11 #define __WRFUNC_H
  12
  13 #include <lg.h>        // bool
  14 #include <wrtype.h>
  15 #include <wrdb.h>
  16
  17 #ifdef __cplusplus
  18 extern "C"
  19 {
  20 #endif
  21
  22   // the way cell references work is like this:
  23   //   the first time you reference a cell in a given
  24   //   frame, use WR_CELL(n) to get a pointer to it
  25   //   after that, you can use wr_cell[n] to refer to
  26   //   it, until the end of the frame.
  27   //
  28   //   Every time you call ResetWorldRep(), you can no
  29   //   longer count on data which you have dangled off
  30   //   of the world rep, and you need to call WR_CELL
  31   //   again.
  32   //
  33   //   In reality, for this round, we're not going to
  34   //   swap the db to disk.
  35
  36 extern PortalCell *wr_cell[];
  37 extern int wr_num_cells;
  38 extern wrBspNode *wrBspTree;
  39 void ResetWorldRep(void);
  40
  41 #ifndef DYNAMIC_CELLS
  42   #define WR_CELL(n)  (wr_cell[n])
  43 #else
  44   #define WR_CELL(n)  (wr_cell[n] ? wr_cell[n] : LoadWorldRepCell(n))
  45   PortalCell *LoadWorldRepCell(int n);
  46 #endif
  47
  48   // A macro which if true means that we definitely have a valid
  49   // cell, and we can quickly compute it
  50 #define IS_CELLFROMLOC_FAST(loc)   ((loc)->cell != CELL_INVALID)
  51
  52 #define CellFromLoc(loc) (IS_CELLFROMLOC_FAST(loc) ? (loc)->cell : ComputeCellForLocation(loc))
  53 #define CellFromPos(p)   CellFromLoc(&((p)->loc))
  54
  55 // Macros for the worldrep bsp tree
  56 #define wrIS_LEAF(b)   (b->leaf)
  57 #define wrIS_NODE(b)   (!b->leaf)
  58 #define wrIS_ROOT(b)   (b->parent == NULL)
  59 #define wrIS_MARKED(b) (b->mark)
  60 #define wrMARK(b)      (b->mark = TRUE)
  61 #define wrUNMARK(b)    (b->mark = FALSE)
  62
  63 int ComputeCellForLocation(Location *loc);
  64 int PortalComputeCellFromPoint(mxs_vector *seed_pos);
  65 bool PortalTestInCell(int r, Location *loc);
  66
  67 void PortalComputeBoundingSphere(PortalCell *cell);
  68
  69 // for opening and closing doors
  70 int PortalBlockVision(PortalCell *starting_cell);
  71 int PortalBlockVisionFromLocation(Location *seed_loc);
  72 int PortalUnblockVision(PortalCell *starting_cell);
  73 int PortalUnblockVisionFromLocation(Location *seed_loc);
  74
  75 #ifdef __cplusplus
  76 };
  77 #endif
  78
  79 #endif
  80