/*
    CrossFire, A Multiplayer game for X-windows

    Copyright (C) 2002 Mark Wedel & Crossfire Development Team
    Copyright (C) 1992 Frank Tore Johansen

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

    The authors can be reached via e-mail at <crossfire@schmorp.de>
*/


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

#define NR_DECOR_OPTIONS 1

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

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

  for (tmp = get_map_ob (map, x, y); tmp != NULL; tmp = tmp->above)
    count++;
  return count;
}

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

void
put_decor (maptile *map, char **maze, char *decorstyle, int decor_option, RMParms * RP)
{
  maptile *decor_map;
  char style_name[256];

  sprintf (style_name, "/styles/decorstyles");

  decor_map = find_style (style_name, decorstyle, -1);
  if (decor_map == NULL)
    return;
  /* pick a random option, only 1 option right now. */
  if (decor_option == 0)
    decor_option = RANDOM () % NR_DECOR_OPTIONS + 1;
  switch (decor_option)
    {
        case 0:
          break;
        case 1:
          {                     /* random placement of decor objects. */
            int number_to_place = RANDOM () % ((RP->Xsize * RP->Ysize) / 5);
            int failures = 0;
            object *new_decor_object;

            while (failures < 100 && number_to_place > 0)
              {
                int x, y;

                x = RANDOM () % (RP->Xsize - 2) + 1;
                y = RANDOM () % (RP->Ysize - 2) + 1;
                if (maze[x][y] == 0 && obj_count_in_map (map, x, y) < 2)
                  {             /* empty */
                    object *this_object;

                    new_decor_object = pick_random_object (decor_map);
                    this_object = arch_to_object (new_decor_object->arch);
                    new_decor_object->copy_to (this_object);
                    this_object->x = x;
                    this_object->y = y;
                    /* it screws things up if decor can stop people */
                    this_object->move_block = MOVE_BLOCK_DEFAULT;
                    insert_ob_in_map (this_object, map, NULL, 0);
                    number_to_place--;
                  }
                else
                  failures++;
              }
            break;
          }
        default:
          {                     /* place decor objects everywhere: tile the map. */
            int i, j;

            for (i = 1; i < RP->Xsize - 1; i++)
              for (j = 1; j < RP->Ysize - 1; j++)
                {
                  if (maze[i][j] == 0)
                    {
                      object *new_decor_object, *this_object;

                      new_decor_object = pick_random_object (decor_map);
                      this_object = arch_to_object (new_decor_object->arch);
                      new_decor_object->copy_to (this_object);
                      this_object->x = i;
                      this_object->y = j;
                      /* it screws things up if decor can stop people */
                      this_object->move_block = MOVE_BLOCK_DEFAULT;
                      insert_ob_in_map (this_object, map, NULL, 0);
                    }
                }
            break;
          }
    }
}