/*
 * @topic T00837 Using DicePair with rollSeries() Nov 10 2015
 * @brief DicePair class with rollSeries() method
 */
package diceroll;

public class DicePair {
    // data fields
    private Die dieOne;
    private Die dieTwo;
    int[] totalStats;

    // constructors:
    // construct dice with equal number of sides
    public DicePair(int dieSideCount)
    {
        dieOne = new Die( dieSideCount );
        dieTwo = new Die( dieSideCount );
        totalStats = new int[ 1 + dieSideCount * 2 ];
        // create an array of ints having enough space
        // for a range of dice combinations between
        // 2 and dieSideCount*2 (e.g. 2 through 12)
        // plus 1 element which is unused index [0]
    }

    // construct dice with unequal number of sides
    public DicePair(int numberOfSides, int numberOfSides2)
    {
        dieOne = new Die(numberOfSides);
        dieTwo = new Die(numberOfSides2);
    }

    // operations
    public void rollSeries( int numberOfRolls )
    {
        while ( numberOfRolls-- > 0 ) {
            int total = roll();
            ++totalStats[ total ];
        }
    }
    
    public void displayTotalStats()
    {
        for (
                int total = 2;
                total <= (dieOne.getSideCount()+dieTwo.getSideCount());
                ++total
                )
        {
            System.out.println(
                    total + " rolled " + totalStats[ total ] + " times" );
        }
    }
    
    public void resetStats()
    {
        for (
                int total = 2;
                total <= (dieOne.getSideCount()+dieTwo.getSideCount());
                ++total
                )
        {
            totalStats[ total ] = 0;
        }
    }
    
    // generate new combination
    public int roll()
    {
        int total = dieOne.roll() + dieTwo.roll();
        return total;
    }

    // obtain reference to a particular die object
    public Die getDieObject( int index )
    {
        if ( index == 1 ) {
            return dieOne;
        }
        // TODO -- validate that index is 2.
        // If not valid -- report application logic error
        // and throw an exception.

        return dieTwo;
    }
}//class DicePair