src/piecegrid.h

   1 /*
   2   Copyright (c) 2006 Paolo Capriotti <p.capriotti@gmail.com>
   3             (c) 2006 Maurizio Monge <maurizio.monge@kdemail.net>
   4
   5   This program is free software; you can redistribute it and/or modify
   6   it under the terms of the GNU General Public License as published by
   7   the Free Software Foundation; either version 2 of the License, or
   8   (at your option) any later version.
   9 */
  10
  11 #ifndef PIECEGRID_H
  12 #define PIECEGRID_H
  13
  14 #include "grid.h"
  15
  16 /**
  17   * A specialization of Grid useful for containing pointers.
  18   * It is used only to contain pointers to Piece and derived classes.
  19   */
  20 template <typename T>
  21 class PointerGrid : public Grid<T*> {
  22 public:
  23   using Grid<T*>::board; // why???
  24   PointerGrid(int sizeX, int sizeY);
  25   PointerGrid(const PointerGrid<T>& other);
  26   template <typename T1>
  27   PointerGrid(const PointerGrid<T1>& other);
  28
  29   bool operator==(const PointerGrid<T>& other) const;
  30
  31   Point find(const T& x) const {
  32     for (Point i = this->first(); i <= this->last(); i = this->next(i)) {
  33       if ((*this)[i] && *(*this)[i] == x)
  34         return i;
  35     }
  36     return Point::invalid();
  37   }
  38
  39   virtual ~PointerGrid();
  40 };
  41
  42
  43 //BEGIN Implementation
  44
  45 template <typename T>
  46 PointerGrid<T>::PointerGrid(int sizeX, int sizeY) : Grid<T*>(sizeX, sizeY, 0) {}
  47
  48 template <typename T>
  49 PointerGrid<T>::PointerGrid(const PointerGrid<T>& other)
  50 : Grid<T*>(other) {
  51   for (uint i = 0; i < board.size(); ++i) {
  52     T* p = other.board[i];
  53     if (p)
  54       board[i] = new T(*p);
  55     else
  56       board[i] = 0;
  57   }
  58 }
  59
  60 template <typename T>
  61 template <typename T1>
  62 PointerGrid<T>::PointerGrid(const PointerGrid<T1>& other)
  63 : Grid<T*>(other.getSize().x, other.getSize().y) {
  64   for (uint i = 0; i < board.size(); ++i) {
  65     T1* p = other.board[i];
  66     if (p)
  67       board[i] = new T(*p);
  68     else
  69       board[i] = 0;
  70   }
  71 }
  72
  73 template <typename T>
  74 PointerGrid<T>::~PointerGrid() {
  75   for (uint i = 0; i < board.size(); ++i)
  76     delete board[i];
  77 }
  78
  79 template <typename T>
  80 bool PointerGrid<T>::operator==(const PointerGrid<T>& other) const {
  81   for (uint i = 0; i < board.size(); ++i) {
  82     if (!board[i]) {
  83       if (other.board[i]) return false;
  84     }
  85     else
  86       if (! board[i]->equals(other.board[i])) return false;
  87   }
  88   return true;
  89 }
  90
  91
  92 //END Implementation
  93
  94 #endif // PIECEGRID_H