//  aquadisplay.cpp
//
//  Chris Nevison
//  March 15, 2000
//
//  This file defines a class AquaDisplay for the Aquarium simulation
//  defined in the files aquafish.h/cpp and aquamain.cpp.
//  This simulation shows the fish position in the aquarium after 
//  each move.  

//  The AquaDisplay class requires the the AquaFish class have
//  two public member functions not originally defined:
//
//      Position, which returns an int for the position of the fish
//                in the tank (form 0 to tankSize - 1 inclusive)
//
//      Direction, which returns a character 'l' or 'r' indicating
//                 the current direction of the fish.
//

#include <iostream.h>
#include "aquadisplay.h"


AquaDisplay::AquaDisplay(int tankSize)
:  myTankSize(tankSize)
{
}


void AquaDisplay::ShowFish(AquaFish f)
{
  int k;

  cout << "||";

  for(k = 0; k < myTankSize; k++)
  {
    if(k == f.Position())
    {
      if(f.Direction() == 'l')
        cout << "<-";
      else if (f.Direction() == 'r')
        cout << "->";
      else
        cout << "Error in fish direction in ShowFish." << endl;
    }
    else
      cout << "__";
  }
  cout << "||" << endl;
}