/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008,2009,2010 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2001 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992 Frank Tore Johansen
 * 
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 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 Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 * 
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

#ifndef RANDOM_MAP_H
#define RANDOM_MAP_H

#include "util.h"

struct random_map_params
{
  char wallstyle[512];
  char wall_name[512];
  char floorstyle[512];
  char monsterstyle[512];
  char treasurestyle[512];
  char layoutstyle[512];
  char doorstyle[512];
  char decorstyle[512];
  shstr origin_map;
  shstr final_map;
  char exitstyle[512];
  shstr this_map;
  char exit_on_final_map[512];
  char *custom;
        
  int xsize, ysize;
  int expand2x;
  int layoutoptions1;
  int layoutoptions2;
  int layoutoptions3;
  int symmetry;
  int difficulty;
  int difficulty_given;
  float difficulty_increase;

  int dungeon_level;
  int dungeon_depth;

  int decoroptions;
  int orientation;
  int origin_y;
  int origin_x;
  uint32_t random_seed;
  uint64_t total_map_hp;
  int map_layout_style;
  int treasureoptions;
  int symmetry_used;

  struct region *region;

  // "private", adjusted sizes
  int Xsize;
  int Ysize;
};

enum {
  LAYOUT_NONE,
  LAYOUT_ONION,
  LAYOUT_MAZE,
  LAYOUT_SPIRAL,
  LAYOUT_ROGUELIKE,
  LAYOUT_SNAKE,
  LAYOUT_SQUARE_SPIRAL,
  NROFLAYOUTS,
};

/*
 * Move these defines out of room_gen_onion.c to here, as
 * other files (like square_spiral) also uses them.

options:
0	Pick random options below
1	"centered"
2	linear doors (default is nonlinear)
4	bottom "centered"
8  bottom-right centered
16	irregularly/randomly spaced layers (default: regular)
32	outer wall off:  i.e., no outer wall.

*/

enum {
  RMOPT_RANDOM     =   0,
  RMOPT_CENTERED   =   1,
  RMOPT_LINEAR     =   2,
  RMOPT_BOTTOM_C   =   4,
  RMOPT_BOTTOM_R   =   8,
  RMOPT_IRR_SPACE  =  16,
  RMOPT_WALL_OFF   =  32,
  RMOPT_WALLS_ONLY =  64,
  RMOPT_NO_DOORS   = 256, /* Place walls insead of doors.  Produces broken map. */  
};

/* symmetry definitions--used in this file AND in treasure.c:
the numerical values matter so don't change them. */
enum {
  SYMMETRY_RANDOM,
  SYMMETRY_NONE,
  SYMMETRY_X,
  SYMMETRY_Y,
  SYMMETRY_XY,
};

// 12 has been experimentally :( determined ot be a lot more stable
// than 11 or 10, leading to the assumption that something inherently
// needs a minimum size of at least 12
#define MIN_RANDOM_MAP_SIZE 12

// reference
//
// \0  floor only
// #   wall
// D   door
// <   up
// >   down
// C   "center" (of onion layout)
// .   ?? (rogue)
//

struct LayoutData : zero_initialised
{
  char **col;
  int w, h;

  LayoutData (int w, int h);
  ~LayoutData ();

  operator char **()
  {
    return col;
  }

  void clear (char fill = 0);
  void border (char fill = '#');
};

struct Layout
{
  LayoutData *ptr;

  Layout ()
  {
  }

  Layout (int xsize, int ysize)
  : ptr (new LayoutData (xsize, ysize))
  {
  }

  Layout (random_map_params *RP)
  : ptr (new LayoutData (RP->Xsize, RP->Ysize))
  {
  }

  void free ()
  {
    delete ptr;
  }

  LayoutData *operator ->() const
  {
    return ptr;
  }

  operator char **() const
  {
    return *ptr;
  }

  void swap (const Layout &layout) const
  {
    ::swap (layout.ptr->col, ptr->col);
    ::swap (layout.ptr->w  , ptr->w  );
    ::swap (layout.ptr->h  , ptr->h  );
  }
};

#endif