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<pre> /****************************************************************************
**
** Copyright (C) 2004-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
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#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;
}</pre>
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