/************************************************************************\
|* gtf is a framework for analyzing two-player zero-sum games           *|
|* Copyright (C) 2005 Troels Bjerre Sorensen                            *|
|*                                                                      *|
|* 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., 59 Temple Place - Suite 330,         *|
|* Boston, MA 02111-1307, USA.                                          *|
\************************************************************************/

package gtf.game;

import gtf.Visitor;
import gtf.util.Rational;
import java.util.*;

public class RandomNode extends ImpRandomNode {
	private List<GameTree> children = new ArrayList<GameTree>();

	private Rational probsum = Rational.ZERO;
	
	public Rational getProbSum() {
		return probsum;
	}

	public Iterator<GameTree> getChildren() {
		return children.iterator();
	}

	public final RandomNode addChild(String learn, int prob, GameTree child) {
		return addChild(learn, learn, prob, child);
	}

	public final RandomNode addChild(String p1learn, String p2learn, int prob, GameTree child) {
		return addChild(p1learn, p2learn, new Rational(prob), child);
	}
	
	public final RandomNode addChild(String p1learn, String p2learn, Rational prob, GameTree child) {
		child.p1learn = p1learn;
		child.p2learn = p2learn;
		child.probmult = prob;
		probsum = probsum.add(prob);
		children.add(child);
		return this;
	}
}