/**
  * Aquarium Lab Series
  * Copyright (C) 2000  Alyce Brady
  *
  * Implementation file for Aquarium class -- see aquarium.h for details.
  *
  * License:
  *    This program is free software; you can redistribute it and/or modify
  *    it under the terms of the GNU General Public License as published by
  *    the Free Software Foundation.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU General Public License for more details.
  */

#include "aquarium.h"
#include "randgen.h"

// constructors

Aquarium::Aquarium()
  : myWidth(0), myHeight(0)
// postcondition: width and height are initialized to 0
{
}

Aquarium::Aquarium(int width, int height)
  : myWidth(width), myHeight(height)
// postcondition: Width() == width, Height() == height
{
}

// public observer functions

int Aquarium::Width() const
// returns width of aquarium    
{
    return myWidth;
}

int Aquarium::Height() const
// returns height of aquarium
{
    return myHeight;
}

bool Aquarium::ValidLoc(int x_coord, int y_coord) const
// returns true if and only x_coord and y_coord
//         represent a valid location in the aquarium
{
    return (0 <= x_coord and x_coord < myWidth) and 
           (0 <= y_coord and y_coord < myHeight);
}

int Aquarium::LeftWallLoc() const
// returns the x coordinate of the aquarium's left wall
{
    return -1;
}

int Aquarium::RightWallLoc() const
// returns the x coordinate of the aquarium's right wall
{
    return myWidth;
}