#include <iostream.h>
#include <fstream.h>

#include "prompt.h"
#include "observer.h"
#include "walk.h"

// simulate two random walkers at once
// Owen Astrachan, 6/29/96,
// modified 9/11/96 by Michael Loeb
//
// uses a WalkObserver to monitor each of the random walkers
// Creates 2 RandomWalk Objects that are observed by the Observer

const int NUM_FROGS = 2;

int main()
{
    //find out how long to walk
    
    int numSteps = PromptRange("enter # steps",0,1000000);

    //Open the output stream and create the observer for NUM_FROGS frogs
    
    ofstream outstream("frog.out");
    WalkObserver frogObserver(outstream,NUM_FROGS);

    //Take a walk
    
    RandomWalk frog(frogObserver,numSteps);  // define two random walkers
    RandomWalk toad(frogObserver,numSteps);
    
    int samePadCount = 0;                    // # times at same location
    
    frog.First();
    toad.First();

    while (! frog.IsDone())
    {
        frog.Next();
        toad.Next();
    }
    return 0;
}