apps/plugins/rockboy/events.c

   1 /*
   2  * events.c
   3  *
   4  * Event queue.
   5  */
   6
   7
   8 #include "rockmacros.h"
   9 #include "input.h"
  10
  11 #define MAX_EVENTS 32
  12
  13 static event_t eventqueue[MAX_EVENTS];
  14 static int eventhead, eventpos;
  15
  16
  17 int ev_postevent(event_t *ev)
  18 {
  19     int nextevent;
  20     nextevent = (eventhead+1)%MAX_EVENTS;
  21     if (nextevent == eventpos)
  22         return 0;
  23     eventqueue[eventhead] = *ev;
  24     eventhead = nextevent;
  25     return 1;
  26 }
  27
  28 int ev_getevent(event_t *ev)
  29 {
  30     if (eventpos == eventhead)
  31     {
  32         ev->type = EV_NONE;
  33         return 0;
  34     }
  35     *ev = eventqueue[eventpos];
  36     eventpos = (eventpos+1)%MAX_EVENTS;
  37     return 1;
  38 }