tetrixpiece.cpp Example File

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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;
  }