Package com.barrybecker4.game.twoplayer.common.search.transposition

Examples of com.barrybecker4.game.twoplayer.common.search.transposition.Entry

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    @Override
    protected TwoPlayerMove searchInternal( TwoPlayerMove lastMove,
                                           int depth,
                                           SearchWindow window, SearchTreeNode parent ) {
        HashKey key = searchable.getHashKey();
        Entry entry = lookupTable.get(key);
        if (lookupTable.entryExists(entry, lastMove, depth, window)) {
            if (entry.lowerValue > window.alpha) {
                entry.bestMove.setInheritedValue(entry.lowerValue);
                return entry.bestMove;
            }
            else if (entry.upperValue < window.beta) {
                entry.bestMove.setInheritedValue(entry.upperValue);
                return entry.bestMove;
            }
        }

        entry = new Entry(lastMove, depth, new SearchWindow(-INFINITY, INFINITY));

        boolean done = searchable.done( lastMove, false);
        if ( depth <= 0 || done ) {
            if (doQuiescentSearch(depth, done, lastMove))  {
                TwoPlayerMove qMove = quiescentSearch(lastMove, depth, window, parent);
                if (qMove != null)  {
                    entry = new Entry(qMove, qMove.getInheritedValue());
                    lookupTable.put(key, entry);
                    return qMove;
                }
            }
            int sign = fromPlayer1sPerspective(lastMove) ? 1 : -1;
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        int i = 0;
        int bestInheritedValue = -INFINITY;
        TwoPlayerMove selectedMove;

        TwoPlayerMove bestMove = (TwoPlayerMove)list.get(0);
        Entry entry = new Entry(bestMove, depth, window);

        while ( !list.isEmpty() ) {
            TwoPlayerMove theMove = getNextMove(list);
            if (pauseInterrupted())
                return lastMove;
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        ParameterArray initialGuess = new TantrixPath(board);
        assert(initialGuess.size() > 0) : "The random path should have some tiles!";
        long startTime = System.currentTimeMillis();

        Optimizer optimizer = new Optimizer(this);
        optimizer.setListener(this);

        ParameterArray solution =
            optimizer.doOptimization(strategy, initialGuess, SOLVED_THRESH);

        solution_ =
            new TantrixBoard(((TantrixPath)solution).getTilePlacements(), board.getPrimaryColor());

        TilePlacementList moves;
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     * @return list of moves to a solution.
     */
    @Override
    public TilePlacementList solve()  {

        ParameterArray initialGuess = new TantrixPath(board);
        assert(initialGuess.size() > 0) : "The random path should have some tiles!";
        long startTime = System.currentTimeMillis();

        Optimizer optimizer = new Optimizer(this);
        optimizer.setListener(this);

        ParameterArray solution =
            optimizer.doOptimization(strategy, initialGuess, SOLVED_THRESH);

        solution_ =
            new TantrixBoard(((TantrixPath)solution).getTilePlacements(), board.getPrimaryColor());

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     * Draw one of the tile paths which takes one of three forms.
     */
    public void drawPath(Graphics2D g2, int pathNumber, TilePlacement tilePlacement,
                         Point position, double size) {

        HexTile tile = tilePlacement.getTile();
        int pathStartIndex = getPathStartIndex(tile, pathNumber);

        int i = pathStartIndex + 1;

        PathColor pathColor = tile.getEdgeColor(pathStartIndex);
        while (pathColor != tile.getEdgeColor(i++)) {
            assert(i<6): "Should never exceed 6";
        }

        int pathEndIndex = i-1;
        int diff = pathEndIndex - pathStartIndex;
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        this.numTiles = numTiles;
    }

    public TantrixBoard initialPosition() {
        //MathUtil.RANDOM.setSeed(1);
        return new TantrixBoard(new HexTiles().createRandomList(numTiles));
    }
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    public boolean isGoal(TantrixBoard position) {
        return position.isSolved();
    }

    public TilePlacementList legalMoves(TantrixBoard position) {
        return new MoveGenerator(position).generateMoves();
    }
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        HexTile tile = tilePlacement.getTile();
        int pathStartIndex = getPathStartIndex(tile, pathNumber);

        int i = pathStartIndex + 1;

        PathColor pathColor = tile.getEdgeColor(pathStartIndex);
        while (pathColor != tile.getEdgeColor(i++)) {
            assert(i<6): "Should never exceed 6";
        }

        int pathEndIndex = i-1;
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     */
    private int getPathStartIndex(HexTile tile, int pathNumber) {
        Set<PathColor> set = new HashSet<PathColor>();
        int i = 0;
        do {
            PathColor c = tile.getEdgeColor(i++);
            set.add(c);
        } while (set.size() <= pathNumber);
        return i-1;
    }
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        boolean consistentLoop = isLoop && allFit;
        boolean perfectLoop = false;
        double compactness = determineCompactness(path);

        if (consistentLoop) {
            Tantrix tantrix = new Tantrix(path.getTilePlacements());
            InnerSpaceDetector innerDetector = new InnerSpaceDetector(tantrix);
            perfectLoop = !innerDetector.hasInnerSpaces();
            //System.out.println("perfect loop");
        }
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  • com.barrybecker4.common.math.function.ArrayFunction
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