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ksokoban'MapDelta (./kdegames/ksokoban/MapDelta.H:27)

class MapDelta : private Map {
public:
  MapDelta (Map *m);

  void start ();
  void end ();

  bool hasChanged (int x, int y) {
    assert (ended_);
    return map (x, y) == 1;
  }

private:
  Map      *source_;
  bool      ended_;
};

ksokoban'MapDelta::MapDelta() (./kdegames/ksokoban/MapDelta.C:25)

MapDelta::MapDelta (Map *m) {
  source_ = m;
  ended_ = true;
  start ();
}

void

ksokoban'MapDelta::start() (./kdegames/ksokoban/MapDelta.C:32)

MapDelta::start () {
  assert (ended_);
  ((Map &) *this) = *source_;

#if 0
  memcpy (map_, source_->currentMap_, (MAX_Y+3)*(MAX_X+3)*sizeof (int));
  for (int y=1; y<MAX_Y+2; y++) {
    for (int x=1; x<MAX_X+2; x++) {
      map_[y][x] = source_->currentMap_[y][x];
    }
  }
  xpos_ = source_->xpos_;
  ypos_ = source_->ypos_;
#endif

  ended_ = false;
}

void

ksokoban'MapDelta::end() (./kdegames/ksokoban/MapDelta.C:51)

MapDelta::end () {
  assert (!ended_);
  for (int y=0; y<=MAX_Y; y++) {
    for (int x=0; x<=MAX_X; x++) {
      map (x, y, map (x, y) != source_->map (x, y));
    }
  }
  if (xpos_ != source_->xpos_ || ypos_ != source_->ypos_) {
    map (xpos_, ypos_, 1);
    map (source_->xpos_, source_->ypos_, 1);
  }
  ended_ = true;
}