mappatch.h

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/*
Copyright (C) 2001 The Exult Team

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.
*/

#ifndef INCL_MAPPATCH
#define INCL_MAPPATCH 1

#include <map>
#include <list>
#include "tiles.h"

class Game_object;

/*
 *  Specify an object by location, shape, etc.
 */
class Object_spec
  {
public:
  Tile_coord loc;     // Where it is.
  int shapenum;     // Shape #, or -359 for 'dont care'.
  int framenum;     // Frame #, or -359.
  int quality;      // Quality, or -359.
  Object_spec(Tile_coord t, int shnum = c_any_shapenum,
      int frnum = c_any_framenum, int qual = c_any_qual) 
    : loc(t), shapenum(shnum), framenum(frnum), quality(qual)
    {  }
  };

/*
 *  Base class for map patches:
 */
class Map_patch
  {
  Object_spec spec;   // Specifies object to modify.
public:
  friend class Map_patch_collection;
  Map_patch(Object_spec s) : spec(s)
    {  }
  Game_object *find();    // Find matching object.
  virtual bool apply() = 0; // Perform action.
  };

// Sigh, this is needed to prevent compiler error with MSVC
typedef std::list<Map_patch*> Map_patch_list;
typedef std::map<int, Map_patch_list> Map_patch_map;

/*
 *  Remove an object.
 */
class Map_patch_remove : public Map_patch
  {
  bool all;     // Delete all matching.
public:
  Map_patch_remove(Object_spec s, bool a = false) : Map_patch(s)
    {  }
  virtual bool apply();   // Perform action.
  };

/*
 *  Move/modify an object.
 */
class Map_patch_modify : public Map_patch
  {
  Object_spec mod;    // Modification.
public:
  Map_patch_modify(Object_spec s, Object_spec m) : Map_patch(s), mod(m)
    {  }
  virtual bool apply();   // Perform action.
  };

/*
 *  Here's a collection of patches, organized by superchunk.
 */
class Map_patch_collection
  {
  Map_patch_map patches;
public:
  Map_patch_collection()
    {  }
  ~Map_patch_collection();
  void add(Map_patch *p);   // Add a patch.
  void apply(int schunk);   // Apply for given superchunk.
  };

#endif

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