/**
* 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 org.cspoker.ai.bots.bot.gametree.search;
//import org.apache.log4j.Logger;
import org.cspoker.ai.bots.bot.gametree.rollout.BucketRollOut;
import org.cspoker.ai.bots.bot.gametree.search.nodevisitor.NodeVisitor;
import org.cspoker.ai.opponentmodels.OpponentModel;
import org.cspoker.client.common.gamestate.GameState;
import org.cspoker.common.elements.player.PlayerId;
public class ShowdownBucketRolloutNode implements ShowdownNode {
// private final static Logger logger = Logger
// .getLogger(ShowdownBucketRolloutNode.class);
private Distribution valueDistribution = null;
private final GameState gameState;
// private final NodeVisitor[] nodeVisitors;
private final int nbTokens;
private final BucketRollOut rollout;
ShowdownBucketRolloutNode(PlayerId botId, GameState gameState, OpponentModel model, int tokens, NodeVisitor... nodeVisitors) {
this.gameState = gameState;
// this.nodeVisitors = nodeVisitors;
this.nbTokens = tokens;
this.rollout = new BucketRollOut(gameState,botId,model);
}
public Distribution getValueDistribution(double lowerBound) {
if(valueDistribution==null){
int nbSamplesEst = Math.min(30, Math.max(5, nbTokens));
double result = rollout.doRollOut(nbSamplesEst);
int stackSize = rollout.botState.getStack();
valueDistribution = new Distribution(stackSize + result, 0);
}
return valueDistribution;
}
@Override
public double getUpperWinBound() {
return rollout.getUpperWinBound();
}
@Override
public int getNbTokens() {
return nbTokens;
}
@Override
public GameState getGameState() {
return gameState;
}
@Override
public String toString() {
return "Showdown Rollout Node";
}
public static class Factory implements ShowdownNode.Factory{
public ShowdownBucketRolloutNode create(PlayerId botId,
GameState gameState, int tokens, SearchConfiguration config,
int searchId, NodeVisitor... nodeVisitors){
return new ShowdownBucketRolloutNode(botId,gameState,config.getOpponentModel(),tokens, nodeVisitors);
}
@Override
public String toString() {
return "Showdown Bucket Rollout Node";
}
}
}