package roulette;

import java.util.Random;


/**
 * Represents a roulette wheel that can be spun to get a color,
 * either red, black, or green, and a number, between 0 and 37.
 * The numbers 0 and 37 represent the roulette values 0 and 00,
 * respectively.
 * 
 * @author Robert C. Duvall
 */
public class Wheel
{
    // constants
    public static final String RED = "red";
    public static final String BLACK = "black";
    public static final String GREEN = "green";

    // wheel values --- not quite every other one :(
    private static final String[] OUR_SPOTS = 
        {
            GREEN,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            BLACK,
            RED,
            GREEN
        };

    private int myNumSpins;
    private int myValue;
    private Random myRoller;


    /**
     * Construct the wheel.
     */
    public Wheel ()
    {
        myNumSpins = 0;
        myValue = 0;
        myRoller = new Random();
    }


    /**
     * @return color of the current spot on the wheel
     */
    public String getColor ()
    {
        return OUR_SPOTS[myValue];
    }


    /**
     * @return number of the current spot on the wheel
     */
    public int getNumber ()
    {
        return myValue;
    }


    /**
     * @return number of times the wheel has been spun
     */
    public int getNumSpins ()
    {
        return myNumSpins;
    }


    /**
     * Spins the wheel, choosing a new spot.
     */
    public void spin ()
    {
        myNumSpins++;
        myValue = myRoller.nextInt(OUR_SPOTS.length);
    }
}