source/libr2c2/clock.cpp

   1 #include "clock.h"
   2
   3 using namespace std;
   4 using namespace Msp;
   5
   6 namespace R2C2 {
   7
   8 Clock::Clock():
   9         rate(1),
  10         stopped(false)
  11 { }
  12
  13 void Clock::set_rate(float s)
  14 {
  15         rate = s;
  16 }
  17
  18 void Clock::set_current_time(const Time::TimeDelta &t)
  19 {
  20         current_time = t;
  21         signal_discontinuity.emit();
  22 }
  23
  24 void Clock::stop(bool s)
  25 {
  26         stopped = s;
  27 }
  28
  29 void Clock::tick(const Time::TimeDelta &dt)
  30 {
  31         if(stopped)
  32                 return;
  33
  34         unsigned prev_minute = current_time/Time::min;
  35         current_time += dt*rate;
  36         if(current_time>=Time::day)
  37                 current_time -= Time::day;
  38         unsigned minute = current_time/Time::min;
  39         if(minute!=prev_minute)
  40                 signal_minute.emit();
  41 }
  42
  43 void Clock::save(list<DataFile::Statement> &st) const
  44 {
  45         st.push_back((DataFile::Statement("rate"), rate));
  46         st.push_back((DataFile::Statement("time"), current_time.raw()));
  47 }
  48
  49
  50 Clock::Loader::Loader(Clock &c):
  51         DataFile::ObjectLoader<Clock>(c)
  52 {
  53         add("rate", &Clock::rate);
  54         add("time", &Loader::time);
  55 }
  56
  57 void Clock::Loader::time(Time::RawTime t)
  58 {
  59         obj.set_current_time(Time::TimeDelta(t));
  60 }
  61
  62 } // namespace R2C2