////////////////////////////////////////////////////////////////////////////
// counter.cc
//
// Paul McCartney, Winter 1995
//
// Copyright 1995, Washington University Computer Science Department
// All Rights Reserved
//
// RCS:  $Id: framegen.cc,v 1.1 1995/10/27 22:38:34 paul Exp paul $
//
// This module is a counter, incrementing an integer value within
// a range, at a certain rate.  When the maximum value is reached, 
// the counter is reset to the minimum value.
//
// PLAYGROUND VARIABLES:
//
//  num  (output)  - current counter value
//  rate (input)   - rate at which to count, i.e. number of frames per second
//  min  (input)   - minimum value
//  max  (input)   - maximum value
////////////////////////////////////////////////////////////////////////////
#include "PG.hh"

PGint num = 0;
PGint rate = 4;
PGint min = 0;
PGint max = 31;


int
main()
{
  PG::initialize("Counter");

  num.publish("num", PG::READ);
  rate.publish("f/sec", PG::WRITE);
  min.publish("min", PG::WRITE);
  max.publish("max", PG::WRITE);

  while (1) {
    if (num < max) {
      num = num + 1;
    } else {
      num = min;
    }

    if (rate > 1) {
      PG::sleep(0, (int)(1000 / rate));
    } else if (rate == 1) {
      PG::sleep(1);
    } 

    while (rate == 0) {
      PG::sleep(1);
    }
  }

  PG::terminate();
  return 0;
}