hostside/safety.h

   1 /**/
   2
   3 #ifndef SAFETY_H
   4 #define SAFETY_H
   5
   6 typedef unsigned short TrainIx;
   7 typedef unsigned short SegmentIx;
   8 typedef unsigned short Distance;
   9 typedef unsigned char Speed; /* non-negative, units of 4mm/s */
  10
  11 typedef struct {
  12   SegmentIx foredetect;
  13   unsigned justarrived:1, reverse:1;
  14   Speed speed;
  15 } TrainState;
  16
  17 typedef struct {
  18   unsigned present_now:1, present_future:1,
  19     detectable_now:1, detectable_future:1,
  20     sideways:1, autostop:1;
  21   TrainIx owner;
  22   /*polarity?*/
  23 } SegmentState;
  24
  25
  26 typedef struct {
  27   unsigned next_rev:1;
  28   SegmentIx next;
  29   Distance dist;
  30 } SegmentLink;
  31
  32 typedef struct {
  33   SegmentLink backwards, forwards, sideways;
  34 } SegmentInfo;
  35
  36 typedef struct {
  37   Speed maxspeed;
  38   int n_detections;
  39   const Distance *detections;   /* incremental distances from front */
  40 } TrainInfo;
  41
  42
  43 typedef struct {
  44   TrainState trasNUM_TRAINS];
  45   SegmentState segs[NUM_SEGMENTS];
  46 } State;
  47
  48 #endif /*SAFETY_H*/