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grid.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2003-2004 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.      See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/queen/grid.h,v 1.4 2004/10/17 19:00:09 cyx Exp $
 *
 */

#ifndef QUEENGRID_H
#define QUEENGRID_H

#include "common/util.h"
#include "queen/structs.h"

namespace Queen {

enum GridScreen {
      GS_ROOM  = 0,
      GS_PANEL = 1,
      GS_COUNT = 2
};

class QueenEngine;

class Grid {
public:

      Grid(QueenEngine *vm);
      ~Grid();

      void readDataFrom(uint16 numObjects, uint16 numRooms, byte *&ptr);

      void setZone(GridScreen screen, uint16 zoneNum, uint16 x1, uint16 y1, uint16 x2, uint16 y2);
      void setZone(GridScreen screen, uint16 zoneNum, const Box &box);
      uint16 findZoneForPos(GridScreen screen, uint16 x, uint16 y) const;
      uint16 findAreaForPos(GridScreen screen, uint16 x, uint16 y) const;
      void clear(GridScreen screen);
      void setupNewRoom(uint16 room, uint16 firstRoomObjNum);
      void setupPanel();
      void drawZones();
      const Box *zone(GridScreen screen, uint16 index) const;

      Verb findVerbUnderCursor(int16 cursorx, int16 cursory) const;
      uint16 findObjectUnderCursor(int16 cursorx, int16 cursory) const;
      uint16 findObjectNumber(uint16 zoneNum) const;
      uint16 findScale(uint16 x, uint16 y) const;

      Area *area(int room, int num) const { return &_area[room][num]; }
      uint16 areaMax(int room) const { return _areaMax[room]; }
      uint16 objMax(int room) const { return _objMax[room]; } 

      void saveState(byte *&ptr);
      void loadState(uint32 ver, byte *&ptr);

      enum {
            MAX_ZONES_NUMBER = 32,
            MAX_AREAS_NUMBER = 11
      };


private:

      struct ZoneSlot {
            bool valid;
            Box box;
      };

      ZoneSlot _zones[GS_COUNT][MAX_ZONES_NUMBER];
      
      int16 *_objMax;

      int16 *_areaMax;

      Area (*_area)[MAX_AREAS_NUMBER];

      uint16 _numRoomAreas;

      Box *_objectBox;

      QueenEngine *_vm;
};


} // End of namespace Queen

#endif

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