YoungForest.cpp

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//
// YoungForest.cpp
//
/*
*******************************************************************************************************
Copyright (c) 2011, Christopher John Topping, Aarhus University
All rights reserved.
 
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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*/
 
#include "../../Landscape/ls.h"
#include "../../Landscape/cropprogs/YoungForest.h"
 
 
bool YoungForestCrop::Do( Farm *a_farm, LE *a_field, FarmEvent *a_ev )
{
  m_farm  = a_farm;
  m_field = a_field;
  m_ev    = a_ev;
  bool done = false;
  int d1;
 
  switch ( m_ev->m_todo ) {
  case yf_start:
    {
      // Set up the date management stuff
      m_last_date=g_date->DayInYear(1,9);
      // Start and stop dates for all events after harvest
      int noDates= 1;
      m_field->SetMDates(0,0,g_date->DayInYear(1,9));
      // Determined by harvest date - used to see if at all possible
      m_field->SetMDates(1,0,g_date->DayInYear(1,9));
      // Check the next crop for early start, unless it is a spring crop
      // in which case we ASSUME that no checking is necessary!!!!F
      // So DO NOT implement a crop that runs over the year boundary
 
    //new if: do the check only for non-optimising farms and if year>0. (030713 - m_rotation used only in the hidden year, so I modified the condition from >7 to >0)
     if(!(m_farm->GetType() == tof_OptimisingFarm && g_date->GetYearNumber()>0)){
 
      if (m_ev->m_startday>g_date->DayInYear(1,7))
      {
        if (m_field->GetMDates(0,0) >=m_ev->m_startday)
        {
          g_msg->Warn( WARN_BUG, "YoungForestCrop::Do(): "
         "Harvest too late for the next crop to start!!!", "" );
          exit( 1 );
        }
        // Now fix any late finishing problems
        for (int i=0; i<noDates; i++) {
            if(m_field->GetMDates(0,i)>=m_ev->m_startday) { 
                m_field->SetMDates(0,i,m_ev->m_startday-1); //move the starting date
            }
            if(m_field->GetMDates(1,i)>=m_ev->m_startday){
                m_field->SetMConstants(i,0); 
                m_field->SetMDates(1,i,m_ev->m_startday-1); //move the finishing date
            }
        }
      }
      // Now no operations can be timed after the start of the next crop.
 
      int today=g_date->Date();
      d1 = g_date->OldDays() + m_first_date+365; // Add 365 for spring crop
      if (today > d1)
      {
          // Yes too late - should not happen - raise an error
          g_msg->Warn( WARN_BUG, " YoungForestCrop::Do(): "
         "Crop start attempt after last possible start date", "" );
          exit( 1 );
      }
    }//if
 
      // Reinit d1 to first possible starting date.
      d1 = g_date->OldDays()+m_first_date;;
      if ( ! m_ev->m_first_year ) d1+=365; // Add 365 for spring crop (not 1st yr)
      if ( g_date->Date() > d1 )
      {
       d1 = g_date->Date();
      }
    // OK, let's go.
    SimpleEvent( d1, yf_do_nothing_start, false );
  }
  break;
 
  case yf_do_nothing_start:
        SimpleEvent( g_date->OldDays() + g_date->DayInYear( 1, 9 ),
                   yf_do_nothing_stop, false );
    break;
 
  case yf_do_nothing_stop:
     
     ChooseNextCrop (1);
 
    done = true;
    break;
 
  default:
    g_msg->Warn( WARN_BUG, "YoungForestCrop::Do(): "
         "Unknown event type! ", "" );
    exit( 1 );
  }
 
  return done;
}