qcsrc/lib/iter.qh

   1 #ifndef ITER_H
   2 #define ITER_H
   3
   4 #define FOREACH_ARRAY(arr, start, end, cond, body) \
   5         do \
   6         { \
   7                 for (int i = start; i < end; ++i) \
   8                 {                 \
   9                         const noref entity it = arr[i];                 \
  10                         if (cond) { body }                              \
  11                 }                                                   \
  12         } \
  13         while (0)
  14
  15 #define FOREACH_LIST(list, next, cond, body) \
  16         do \
  17         {               \
  18                 noref int i = 0;                                            \
  19                 for (entity it = list##_first; it; (it = it.next, ++i)) \
  20                 {   \
  21                         if (cond) { body }                                      \
  22                 }                                                           \
  23         } \
  24         while (0)
  25
  26 #define FOREACH(list, cond, body) FOREACH_LIST(list, enemy, cond, body)
  27
  28 #endif