git.mutantstargoat.com Git - gbajam22/blob - src/level.c

   1 #include "util.h"
   2 #include "debug.h"
   3 #include "level.h"
   4
   5 struct level *init_level(const char *descstr)
   6 {
   7         const char *str, *line;
   8         int i, j, ncols = 0, nrows = 0;
   9         struct level *lvl;
  10         struct cell *cell;
  11
  12         str = line = descstr;
  13
  14         while(*str) {
  15                 if(*str == '\n') {
  16                         if(ncols > 0 && str > line && str - line != ncols) {
  17                                 panic(get_pc(), "init_level: inconsistent ncols (%d != %d)\n", str - line, ncols);
  18                         }
  19                         ncols = str - line;
  20                         nrows++;
  21                         while(*++str == '\n');
  22                         line = str;
  23                 } else {
  24                         str++;
  25                 }
  26         }
  27
  28         if(!ispow2(ncols)) {
  29                 panic(get_pc(), "init_level: width is not pow2 (%d)\n", ncols);
  30         }
  31
  32         lvl = malloc_nf(sizeof *lvl);
  33         lvl->width = ncols;
  34         lvl->xmask = ncols - 1;
  35         lvl->height = nrows;
  36         lvl->cells = calloc_nf(ncols * nrows, sizeof *lvl->cells);
  37         lvl->mobs = 0;
  38         lvl->items = 0;
  39
  40         str = descstr;
  41         cell = lvl->cells;
  42
  43         for(i=0; i<nrows; i++) {
  44                 for(j=0; j<ncols; j++) {
  45                         cell->x = j;
  46                         cell->y = i;
  47                         if(*str == '#') {
  48                                 cell->type = CELL_SOLID;
  49                         } else {
  50                                 cell->type = CELL_WALK;
  51                         }
  52                         cell++;
  53                         while(*++str == '\n') str++;
  54                 }
  55         }
  56
  57         return lvl;
  58 }
  59
  60 void free_level(struct level *lvl)
  61 {
  62         void *tmp;
  63
  64         free(lvl->cells);
  65
  66         while(lvl->mobs) {
  67                 tmp = lvl->mobs;
  68                 lvl->mobs = lvl->mobs->next;
  69                 free(tmp);
  70         }
  71         while(lvl->items) {
  72                 tmp = lvl->items;
  73                 lvl->items = lvl->items->next;
  74                 free(tmp);
  75         }
  76 }