dieroll.java

Dice Roller 这个软件准许用户产生骰子滚动。一个用户通过把骰子加到卷饼线上

/*
JDice: Java Dice Rolling Program
Copyright (C) 2006 Andrew D. Hilton  ([e-mail])
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; either version 2
of the License, or (at your option) any later version.
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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package J2MEDice;

import java.util.*;

public class DieRoll {

    int ndice;
    private int nsides;
    private int bonus;
    private static Random rnd;

    static {
        rnd = new Random();
    }

    public DieRoll(int ndice,
            int nsides,
            int bonus) {
        this.ndice = ndice;
        this.nsides = nsides;
        this.bonus = bonus;
    }

    public RollResult makeRoll() {
        RollResult r = new RollResult(bonus);
        for (int i = 0; i < ndice; i++) {
            int roll = Math.abs(rnd.nextInt() % nsides) + 1;
            r.addResult(roll);
        }
        return r;
    }

    public String toString() {
        String ans = ndice + "d" + nsides;
        if (bonus > 0) {
            ans = ans + "+" + bonus;
        } else if (bonus < 0) {
            ans = ans + bonus;
        }
        return ans;
    }
}