/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 * 
 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 * Copyright (©) 2002 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>
 */

#include <global.h>
#include <rmg.h>
#include <rproto.h>

#define NR_DECOR_OPTIONS 1

/* return a simple count of objects in the map at x,y. */

static int
obj_count_in_map (maptile *map, int x, int y)
{
  int count = 0;

  for (object *tmp = map->at (x, y).bot; tmp; tmp = tmp->above)
    ++count;

  return count;
}

/* put the decor into the map.  Right now, it's very primitive. */

void
put_decor (maptile *map, layout &maze, const char *decorstyle, int decor_option, random_map_params *RP)
{
  maptile *decor_map = find_style ("/styles/decorstyles", decorstyle, RP->difficulty);
  if (!decor_map)
    return;

  /* pick a random option, only 1 option right now. */
  if (decor_option == 0)
    decor_option = rmg_rndm (NR_DECOR_OPTIONS) + 1;

  switch (decor_option)
    {
      case 0:
        break;

      case 1:
        {                       /* random placement of decor objects. */
          int number_to_place = rmg_rndm (RP->Xsize * RP->Ysize / 5);
          int failures = 0;

          while (failures < 100 && number_to_place > 0)
            {
              //coroapi::cede_to_tick ();

              int x = rmg_rndm (RP->Xsize - 2) + 1;
              int y = rmg_rndm (RP->Ysize - 2) + 1;

              if (maze[x][y] == 0 && obj_count_in_map (map, x, y) < 2)
                {
                  object *this_object = decor_map->pick_random_object (rmg_rndm)->clone ();
                  /* it screws things up if decor can stop people */
                  this_object->move_block = 0;
                  map->insert (this_object, x, y, 0, 0);

                  number_to_place--;
                }
              else
                failures++;
            }
          break;
        }

      default:
        {
          /* place decor objects everywhere: tile the map. */
          for (int i = 1; i < RP->Xsize - 1; i++)
            for (int j = 1; j < RP->Ysize - 1; j++)
              {
                if (maze[i][j] == 0)
                  {
                    object *this_object = decor_map->pick_random_object (rmg_rndm)->clone ();

                    this_object->x = i;
                    this_object->y = j;
                    /* it screws things up if decor can stop people */
                    this_object->move_block = 0;

                    insert_ob_in_map (this_object, map, 0, 0);
                  }
              }

          break;
        }
    }
}