com.barrybecker4.game.twoplayer.go.persistence.GoGameExporter Maven / Gradle / Ivy

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bb4-games java code.
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/** Copyright by Barry G. Becker, 2000-2011. Licensed under MIT License: http://www.opensource.org/licenses/MIT  */
package com.barrybecker4.game.twoplayer.go.persistence;

import com.barrybecker4.game.common.GameContext;
import com.barrybecker4.game.common.Move;
import com.barrybecker4.game.twoplayer.common.TwoPlayerController;
import com.barrybecker4.game.twoplayer.common.persistence.TwoPlayerGameExporter;
import com.barrybecker4.game.twoplayer.go.board.GoBoard;
import com.barrybecker4.game.twoplayer.go.board.move.GoMove;
import com.barrybecker4.game.twoplayer.go.options.GoOptions;

import java.io.IOException;
import java.io.Writer;

/**
 * Exports the state of a Go game to a file.
 *
 * @author Barry Becker
 */
public class GoGameExporter extends TwoPlayerGameExporter {

    float komi = 0.5f;

    public GoGameExporter(TwoPlayerController controller) {
        super(controller);
        komi = ((GoOptions) controller.getOptions()).getKomi();
    }

    /**
     * save the current state of the go game to a file in SGF (4) format
     * @param fileName name of the file to save the state to
     * @param ae the exception that occurred causing us to want to save state
     */
    @Override
    public void saveToFile(String fileName, AssertionError ae )
    {
        GameContext.log( 1, "saving state to :" + fileName );
        GoBoard b = board_;

        try {
            Writer out = createWriter(fileName);
            //PrintWriter foo;
            // SGF header info
            out.write( "(;\n" );
            out.write( "FF[4]\n" );
            out.write( "GM[1]\n" );
            out.write( "CA[UTF-8]\n" );
            out.write( "ST[2]\n" );
            out.write( "RU[japanese]\n" );
            out.write( "SZ[" + b.getNumRows() + "]\n" );
            out.write( "PB[" + players.getPlayer1().getName() + "]\n" );
            out.write( "PW[" + players.getPlayer2().getName() + "]\n" );
            out.write( "KM[" + komi + "]\n" );
            out.write( "PC[US]\n" );
            out.write( "HA[" + b.getHandicap() + "]\n" );
            out.write( "GN[test1]\n" );
            // out.write("PC[US]"); ?? add the handicap stones if present

            writeMoves(b.getMoveList(), out);
            writeExceptionIfAny(ae, out);

            out.write( ')' );
            out.close();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }

    /**
     * return the SGF (4) representation of the move
     * SGF stands for Smart Game Format and is commonly used for Go
     */
    @Override
    protected String getSgfForMove(GoMove move) {

        // passes are not represented in SGF - so just skip it if the piece is null.
        if (move.getPiece() == null)
             return "[]";
        StringBuilder buf = new StringBuilder("");
        char player = 'W';
        if ( move.getPiece().isOwnedByPlayer1() ) {
            player = 'B';
        }
        buf.append( ';' );
        buf.append( player );
        buf.append( '[' );
        buf.append( (char) ('a' + move.getToCol() - 1) );
        buf.append( (char) ('a' + move.getToRow() - 1) );
        buf.append( ']' );
        buf.append( '\n' );
        return buf.toString();
    }
}