Qt 4.3: tetrixpiece.cpp Example File (widgets/tetrix/tetrixpiece.cpp)

|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

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

     /****************************************************************************
     **
     ** Copyright (C) 2004-2007 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 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 GNU
     ** General Public Licensing requirements will be met:
     ** http://trolltech.com/products/qt/licenses/licensing/opensource/
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
     ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
     ** or contact the sales department at sales@trolltech.com.
     **
     ** In addition, as a special exception, Trolltech gives you certain
     ** additional rights. These rights are described in the Trolltech GPL
     ** Exception version 1.0, which can be found at
     ** http://www.trolltech.com/products/qt/gplexception/ and in the file
     ** GPL_EXCEPTION.txt in this package.
     **
     ** In addition, as a special exception, Trolltech, as the sole copyright
     ** holder for Qt Designer, grants users of the Qt/Eclipse Integration
     ** plug-in the right for the Qt/Eclipse Integration to link to
     ** functionality provided by Qt Designer and its related libraries.
     **
     ** Trolltech reserves all rights not expressly granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #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;
     }