|  | Home · All Classes · All Functions · Overviews

# tetrixpiece.cpp Example File
widgets/tetrix/tetrixpiece.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
     ** Commercial Usage
     ** Licensees holding valid Qt Commercial licenses may use this file in
     ** accordance with the Qt Commercial License Agreement provided with the
     ** Software or, alternatively, in accordance with the terms contained in
     ** a written agreement between you and Nokia.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.LGPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU Lesser General Public License version 2.1 requirements
     ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
     **
     ** In addition, as a special exception, Nokia gives you certain additional
     ** rights.  These rights are described in the Nokia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
     **
     ** If you have questions regarding the use of this file, please contact
     ** Nokia at qt-info@nokia.com.
     ** $QT_END_LICENSE$
     **
     ****************************************************************************/

     #include <QtCore>

     #include <stdlib.h>

     #include "tetrixpiece.h"

     void TetrixPiece::setRandomShape()
     {
         setShape(TetrixShape(qrand() % 7 + 1));
     }

     void TetrixPiece::setShape(TetrixShape shape)
     {
         static const int coordsTable[8][4][2] = {
             { { 0, 0 },   { 0, 0 },   { 0, 0 },   { 0, 0 } },
             { { 0, -1 },  { 0, 0 },   { -1, 0 },  { -1, 1 } },
             { { 0, -1 },  { 0, 0 },   { 1, 0 },   { 1, 1 } },
             { { 0, -1 },  { 0, 0 },   { 0, 1 },   { 0, 2 } },
             { { -1, 0 },  { 0, 0 },   { 1, 0 },   { 0, 1 } },
             { { 0, 0 },   { 1, 0 },   { 0, 1 },   { 1, 1 } },
             { { -1, -1 }, { 0, -1 },  { 0, 0 },   { 0, 1 } },
             { { 1, -1 },  { 0, -1 },  { 0, 0 },   { 0, 1 } }
         };

         for (int i = 0; i < 4 ; i++) {
             for (int j = 0; j < 2; ++j)
                 coords[i][j] = coordsTable[shape][i][j];
         }
         pieceShape = shape;
     }

     int TetrixPiece::minX() const
     {
         int min = coords[0][0];
         for (int i = 1; i < 4; ++i)
             min = qMin(min, coords[i][0]);
         return min;
     }

     int TetrixPiece::maxX() const
     {
         int max = coords[0][0];
         for (int i = 1; i < 4; ++i)
             max = qMax(max, coords[i][0]);
         return max;
     }

     int TetrixPiece::minY() const
     {
         int min = coords[0][1];
         for (int i = 1; i < 4; ++i)
             min = qMin(min, coords[i][1]);
         return min;
     }

     int TetrixPiece::maxY() const
     {
         int max = coords[0][1];
         for (int i = 1; i < 4; ++i)
             max = qMax(max, coords[i][1]);
         return max;
     }

     TetrixPiece TetrixPiece::rotatedLeft() const
     {
         if (pieceShape == SquareShape)
             return *this;

         TetrixPiece result;
         result.pieceShape = pieceShape;
         for (int i = 0; i < 4; ++i) {
             result.setX(i, y(i));
             result.setY(i, -x(i));
         }
         return result;
     }

     TetrixPiece TetrixPiece::rotatedRight() const
     {
         if (pieceShape == SquareShape)
             return *this;

         TetrixPiece result;
         result.pieceShape = pieceShape;
         for (int i = 0; i < 4; ++i) {
             result.setX(i, -y(i));
             result.setY(i, x(i));
         }
         return result;
     }