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map.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2004 Ivan Dubrov
 * Copyright (C) 2004-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/engines/gob/map.h $
 * $Id: map.h 23012 2006-06-10 14:37:48Z drmccoy $
 *
 */
#ifndef GOB_MAP_H
#define GOB_MAP_H

#include "gob/util.h"
#include "gob/mult.h"

namespace Gob {

// The same numeric values are also used for the arrow keys.

class Map {
public:
      enum {
            kDirNW = 0x4700,
            kDirN  = 0x4800,
            kDirNE = 0x4900,
            kDirW  = 0x4b00,
            kDirE  = 0x4d00,
            kDirSW = 0x4f00,
            kDirS  = 0x5000,
            kDirSE = 0x5100
      };

#pragma START_PACK_STRUCTS

      struct Point {
            int16 x;
            int16 y;
            int16 field_2; // Gob2
      } GCC_PACK;

#define szMap_ItemPos 3

      struct ItemPos {
            int8 x;
            int8 y;
            int8 orient;            // ??
      } GCC_PACK;

#pragma END_PACK_STRUCTS

      int16 _mapWidth;
      int16 _mapHeight;
      int16 _screenWidth;
      int16 _tilesWidth;
      int16 _tilesHeight;
      int16 _passWidth;
      bool _bigTiles;

      int8 *_passMap; // [y * _mapWidth + x], getPass(x, y);
      int16 **_itemsMap;      // [y][x]
      int16 _wayPointsCount;
      Point *_wayPoints;
      int16 _nearestWayPoint;
      int16 _nearestDest;

      int16 _curGoblinX;
      int16 _curGoblinY;
      int16 _destX;
      int16 _destY;
      int8 _loadFromAvo;

      ItemPos _itemPoses[40];
      char _sourceFile[15];

      void placeItem(int16 x, int16 y, int16 id);

      int16 getDirection(int16 x0, int16 y0, int16 x1, int16 y1);
      int16 checkDirectPath(Mult::Mult_Object *obj, int16 x0, int16 y0, int16 x1, int16 y1);
      int16 checkLongPath(int16 x0, int16 y0, int16 x1, int16 y1, int16 i0, int16 i1);
      void loadItemToObject(void);
      void loadDataFromAvo(char *dest, int16 size);
      void loadMapsInitGobs(void);

      virtual int8 getPass(int x, int y, int heightOff = -1) = 0;
      virtual void setPass(int x, int y, int8 pass, int heightOff = -1) = 0;

      virtual void loadMapObjects(char *avjFile) = 0;
      virtual void findNearestToGob(Mult::Mult_Object *obj) = 0;
      virtual void findNearestToDest(Mult::Mult_Object *obj) = 0;
      virtual void optimizePoints(Mult::Mult_Object *obj, int16 x, int16 y) = 0;

      Map(GobEngine *vm);
      virtual ~Map() {};

protected:
      char *_avoDataPtr;
      GobEngine *_vm;

      int16 findNearestWayPoint(int16 x, int16 y);
      uint16 loadFromAvo_LE_UINT16();
};

class Map_v1 : public Map {
public:
      virtual void loadMapObjects(char *avjFile);
      virtual void findNearestToGob(Mult::Mult_Object *obj);
      virtual void findNearestToDest(Mult::Mult_Object *obj);
      virtual void optimizePoints(Mult::Mult_Object *obj, int16 x, int16 y);

      virtual inline int8 getPass(int x, int y, int heightOff = -1) {
            return _passMap[y * _mapWidth + x];
      }
      
      virtual inline void setPass(int x, int y, int8 pass, int heightOff = -1) {
            _passMap[y * _mapWidth + x] = pass;
      }

      Map_v1(GobEngine *vm);
      virtual ~Map_v1();
};

class Map_v2 : public Map_v1 {
public:
      virtual void loadMapObjects(char *avjFile);
      virtual void findNearestToGob(Mult::Mult_Object *obj);
      virtual void findNearestToDest(Mult::Mult_Object *obj);
      virtual void optimizePoints(Mult::Mult_Object *obj, int16 x, int16 y);

      virtual inline int8 getPass(int x, int y, int heightOff = -1) {
            if (heightOff == -1)
                  heightOff = _passWidth;
            return _vm->_util->readVariableByte((char *) (_passMap + y * heightOff + x));
      }
      
      virtual inline void setPass(int x, int y, int8 pass, int heightOff = -1) {
            if (heightOff == -1)
                  heightOff = _passWidth;
            _vm->_util->writeVariableByte((char *) (_passMap + y * heightOff + x) , pass);
      }

      Map_v2(GobEngine *vm);
      virtual ~Map_v2();
};

}                       // End of namespace Gob

#endif      /* __MAP_H */

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