graphics/tileset.cpp

   1
   2 // manages the tileset
   3 #include "graphics.h"
   4 #include "tileset.h"
   5 #include "tileset.fdh"
   6 using namespace Graphics;
   7
   8 extern const char *tileset_names[];             // from stagedata.cpp
   9 extern const char *stage_dir;                   // from main
  10
  11 static NXSurface *tileset;
  12 static int current_tileset = -1;
  13
  14 bool Tileset::Init()
  15 {
  16         tileset = NULL;
  17         current_tileset = -1;
  18         return 0;
  19 }
  20
  21 void Tileset::Close()
  22 {
  23         delete tileset;
  24 }
  25
  26 /*
  27 void c------------------------------() {}
  28 */
  29
  30 // load the given tileset into memory, replacing any other tileset.
  31 bool Tileset::Load(int new_tileset)
  32 {
  33 char fname[MAXPATHLEN];
  34
  35         if (new_tileset != current_tileset)
  36         {
  37                 if (tileset)
  38                 {
  39                         delete tileset;
  40                         current_tileset = -1;
  41                 }
  42
  43                 sprintf(fname, "%s/Prt%s.pbm", stage_dir, tileset_names[new_tileset]);
  44
  45                 // always use SDL_DisplayFormat on tilesets; they need to come out of 8-bit
  46                 // so that we can replace the destroyable star tiles without them palletizing.
  47                 tileset = NXSurface::FromFile(fname, true, true);
  48                 if (!tileset)
  49                 {
  50                         return 1;
  51                 }
  52
  53                 current_tileset = new_tileset;
  54         }
  55
  56         return 0;
  57 }
  58
  59 // draw the given tile from the current tileset to the screen
  60 void Tileset::draw_tile(int x, int y, int t)
  61 {
  62         // 16 tiles per row on all tilesheet
  63         int srcx = (t % 16) * TILE_W;
  64         int srcy = (t / 16) * TILE_H;
  65
  66         DrawSurface(tileset, x, y, srcx, srcy, TILE_W, TILE_H);
  67 }
  68
  69 void Tileset::Reload()
  70 {
  71         if (current_tileset != -1)
  72         {
  73                 int tileset = current_tileset;
  74                 current_tileset = -1;
  75                 Load(tileset);
  76         }
  77 }
  78
  79 /*
  80 void c------------------------------() {}
  81 */
  82
  83 NXSurface *Tileset::GetSurface()
  84 {
  85         return tileset;
  86 }
  87