Lab 1 COSC 1337

// Christian Ballard
// COSC 1337 - 001
// August 30th 2015
// A simple game of NIM

#include<iostream>
#include<time.h>
#include<Windows.h>
using namespace std;

const int HUMAN = 1;
const int COMPUTER = 0;

int getHumanMove(int);
int getComputerMove(int);
int playTheGame(int);

int main()
{
    int numMarbles = 0;
    char currentPlayer;

    cout << "Rules of the game: " << endl << endl;
    cout << "1. The game begins with 35 marbles in a jar." << endl;
    cout << "2. Each player must take between 1 and 5 marbles" << endl;
    cout << "   from the jar when it's their turn." << endl;
    cout << "3. The player that takes the last marble wins the game." << endl << endl;

    cout << "Do you want to go first? (Y/N) ";

    do
    {

        cin >> currentPlayer;
        currentPlayer = toupper(currentPlayer);

        switch (currentPlayer)
        {
        case 'Y': playTheGame(HUMAN);
            break;
        case 'N': playTheGame(COMPUTER);
            break;
        default: cout << "Error: please enter Y or N." << endl;
            break;
        }

    } while (currentPlayer != 'Y' || currentPlayer != 'N');



    system("pause");
    return 0;
}

int getHumanMove(int numMarbles1)
{
    int humanMarbTaken = 0;

    do
    {
        cout << "How many marbles would you like to take? (1 - 5)" << endl;
        cin >> humanMarbTaken;
        if (humanMarbTaken < 0 || humanMarbTaken > 5)
        {
            cout << "Please try again with a number 1 - 5" << endl;
        }
    } while (humanMarbTaken < 1 || humanMarbTaken > 5);


    return humanMarbTaken;
}

int getComputerMove(int numMarbles2)
{
    int compMarbTaken = 0;
    //int modMarb = numMarbles2 % 6;
    srand((unsigned)time(NULL));
    int min = 0, max = 5;

    if (numMarbles2 <= 5)
    {
        numMarbles2 -= numMarbles2;
    }
    else
    {
        compMarbTaken = rand() % 5 + 1;
        numMarbles2 = numMarbles2 - compMarbTaken;
    }

    cout << "The computer took " << compMarbTaken << " marbles from the jar."
        << endl << endl;

    return compMarbTaken;
}

int playTheGame(int player)
{
    int numMarbles = 35, currentMove = 0;

    while (numMarbles != 0)
    {

        if (player == HUMAN && numMarbles != 0)
        {
            cout << "There are " << numMarbles << " marbles left in the jar." << endl;
            numMarbles -= getHumanMove(numMarbles);
            player = COMPUTER;
            if (numMarbles == 0){
                cout << "Congrats! You won!" << endl;
            }
        }
        else if (player == COMPUTER && numMarbles != 0)
        {
            cout << "There are " << numMarbles << " marbles left in the jar." << endl;
            numMarbles -= getComputerMove(numMarbles);
            player = HUMAN;
            if (numMarbles == 0){
                cout << "Congrats! The computer won!" << endl;
            }
        }

    }
    return 0;
}