/*
 * 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 (©) 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 <material.h>

//+GPL

materialtype_t *materialt;

/*
materialtype material[NROFMATERIALS] = {
  *  		  P  M  F  E  C  C  A  D  W  G  P S P T F  C D D C C G H B  I *
   *		  H  A  I  L  O  O  C  R  E  H  O L A U E  A E E H O O O L  N *
   *		  Y  G  R  E  L  N  I  A  A  O  I O R R A  N P A A U D L I  T *
   *		  S  I  E  C  D  F  D  I  P  S  S W A N R  C L T O N   Y N  R *
   *		  I  C     T     U     N  O  T  O   L      E E H S T P   D  N *
  {"paper", 	{15,10,17, 9, 5, 7,13, 0,20,15, 0,0,0,0,0,10,0,0,0,0,0,0,0,0}},
  {"metal", 	{ 2,12, 3,12, 2,10, 7, 0,20,15, 0,0,0,0,0,10,0,0,0,0,0,0,0,0}},
  {"glass", 	{14,11, 8, 3,10, 5, 1, 0,20,15, 0,0,0,0,0, 0,0,0,0,0,0,0,0,0}},
  {"leather", 	{ 5,10,10, 3, 3,10,10, 0,20,15, 0,0,0,0,0,12,0,0,0,0,0,0,0,0}},
  {"wood", 	{10,11,13, 2, 2,10, 9, 0,20,15, 0,0,0,0,0,12,0,0,0,0,0,0,0,0}},
  {"organics", 	{ 3,12, 9,11, 3,10, 9, 0,20,15, 0,0,0,0,0, 0,0,0,0,0,0,0,0,0}},
  {"stone", 	{ 2, 5, 2, 2, 2, 2, 1, 0,20,15, 0,0,0,0,0, 5,0,0,0,0,0,0,0,0}},
  {"cloth", 	{14,11,13, 4, 4, 5,10, 0,20,15, 0,0,0,0,0, 5,0,0,0,0,0,0,0,0}},
  {"adamant", 	{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0,0, 0,0,0,0,0,0,0,0,0}},
  {"liquid", 	{ 0, 8, 9, 6,17, 0,15, 0,20,15,12,0,0,0,0,11,0,0,0,0,0,0,0,0}},
  {"soft metal",{ 6,12, 6,14, 2,10, 1, 0,20,15, 0,0,0,0,0,10,0,0,0,0,0,0,0,0}},
  {"bone", 	{10, 9, 4, 5, 3,10,10, 0,20,15, 0,0,0,0,0, 2,0,0,0,0,0,0,0,0}},
  {"ice", 	{14,11,16, 5, 0, 5, 6, 0,20,15, 0,0,0,0,0, 7,0,0,0,0,0,0,0,0}}
};
*/

materialtype_t::materialtype_t ()
{
  next        = 0;
  name        = shstr_unknown;
  description = shstr_unknown_material_description;
  material    = 0;

  for (int i = 0; i < NROFATTACKS; i++)
    {
      save [i] = 0;
      mod  [i] = 0;
    }

  chance      = 0;
  difficulty  = 0;
  magic       = 0;
  damage      = 0;
  wc          = 0;
  ac          = 0;
  sp          = 0;
  weight      = 100;
  value       = 100;
  density     = 1000;
}

// create a new material of the given name
static materialtype_t *
dummy_material (shstr_tmp name)
{
  materialtype_t *mt = new materialtype_t;
  mt->name = name;

  // make it susceptible to attacks
  for (int i = 0; i < NROFATTACKS; i++)
    {
      mt->save [i] = 10;
      mt->mod  [i] =  9;
    }

  mt->next = materialt; materialt = mt;

  return mt;
}

/* convert materialname to materialtype_t */
materialtype_t *
name_to_material (const shstr_tmp name)
{
  for (materialtype_t *mt = materialt; mt; mt = mt->next)
    if (name == mt->name)
      return mt;

  LOG (llevError, "name_to_material called with nonexistent material '%s'\n", &name);

  return dummy_material (name);
}

void
object_thawer::get (materialtype_t *&m) const
{
  shstr name;
  get (name);

  for (materialtype_t *mt = materialt; mt; mt = mt->next)
    if (name == mt->name)
      {
        m = mt;
        return;
      }

  parse_error (format ("material called %s requested, but not found, creating dummy material.\n", &name));

  m = dummy_material (name);
}

/* when doing transmutation of objects, we have to recheck the resistances,
 * as some that did not apply previously, may apply now.
 */
void
transmute_materialname (object *op, const object *change)
{
  if (!op->is_armor ())
    return;

  if (op->material == MATERIAL_NULL)
    return;

  if (op->material != change->material)
    return;

  materialtype_t *mt = op->material;

  for (int j = 0; j < NROFATTACKS; j++)
    if (op->resist[j] == 0 && change->resist[j] != 0)
      {
        op->resist[j] += mt->mod[j];

        if (op->resist[j] >  100) op->resist[j] =  100;
        if (op->resist[j] < -100) op->resist[j] = -100;
      }
}

/* set the materialname and type for an item */
void
select_material (object *op, int difficulty)
{
  if (op->material != MATERIAL_NULL || !op->materials)
    return;

  materialtype_t *lmt = 0;

  //TODL: dead code?
  for (materialtype_t *mt = materialt; mt; mt = mt->next)
    if (op->materials & mt->material
        && difficulty >= mt->difficulty
        && rndm (1, 100) <= mt->chance
        && (op->magic >= mt->magic || mt->magic == 0))
      {
        lmt = mt;

        if (!(op->is_weapon () || op->is_armor ()))
          break;
      }

  if (lmt)
    {
      if (op->stats.dam && op->is_weapon ())
        {
          op->stats.dam += lmt->damage;
          if (op->stats.dam < 1)
            op->stats.dam = 1;
        }

      if (op->stats.sp && op->type == BOW ) op->stats.sp += lmt->sp;
      if (op->stats.wc && op->is_weapon ()) op->stats.wc += lmt->wc;

      if (op->is_armor ())
        {
          if (op->stats.ac)
            op->stats.ac += lmt->ac;

          for (int j = 0; j < NROFATTACKS; j++)
            if (op->resist[j] != 0)
              {
                op->resist[j] += lmt->mod[j];
                if (op->resist[j] >  100) op->resist[j] =  100;
                if (op->resist[j] < -100) op->resist[j] = -100;
              }
        }

      op->material = lmt;

      /* dont make it unstackable if it doesn't need to be */
      if (op->is_weapon () || op->is_armor ())
        {
          op->weight = op->weight * lmt->weight / 100;
          op->value  = op->value  * lmt->value  / 100;
        }
    }
}

//-GPL

void
load_materials ()
{
  //TODO: somehow free old materials, or update them in-place
  // currently we effectively leak them.
  material_null.next = 0; materialt = &material_null;

  object_thawer thawer (settings.datadir, "materials");

  if (!thawer)
    {
      LOG (llevError, "Cannot open %s for reading\n", thawer.name);
      goto done;
    }

  while (thawer.kw != KW_name)
    {
      thawer.next ();

      if (thawer.kw == KW_EOF)
        goto done;
    }

  materialtype_t *mt;

  for (;;)
    {
      switch (thawer.kw)
        {
          case KW_name:
            mt = new materialtype_t;
            thawer.get (mt->name);
            mt->description = mt->name;

            mt->next = materialt; materialt = mt;
            break;

          case KW_description:
            thawer.get (mt->description);
            break;

          case KW_material:
            thawer.get (mt->material);
            break;

          case KW_saves:
            {
              const char *cp = thawer.get_str () - 1;

              for (int i = 0; i < NROFATTACKS; i++)
                {
                  if (!cp)
                    {
                      mt->save[i] = 0;
                      continue;
                    }

                  int value;
                  ++cp;
                  sscanf (cp, "%d", &value);
                  mt->save[i] = (sint8) value;
                  cp = strchr (cp, ',');
                }
            }
            break;

          case KW_mods:
            {
              const char *cp = thawer.get_str () - 1;

              for (int i = 0; i < NROFATTACKS; i++)
                {
                  if (!cp)
                    {
                      mt->save[i] = 0;
                      continue;
                    }

                  ++cp;
                  int value;
                  sscanf (cp, "%d", &value);
                  mt->mod[i] = (sint8) value;
                  cp = strchr (cp, ',');
                }
            }
            break;

          case KW_chance:  thawer.get (mt->chance);     break;
          case KW_difficulty: // cf+ alias, not original cf
          case KW_diff:    thawer.get (mt->difficulty); break;
          case KW_magic:   thawer.get (mt->magic);      break;
          case KW_dam:        // cf+ alias, not original cf
          case KW_damage:  thawer.get (mt->damage);     break;
          case KW_wc:      thawer.get (mt->wc);         break;
          case KW_ac:      thawer.get (mt->ac);         break;
          case KW_sp:      thawer.get (mt->sp);         break;
          case KW_weight:  thawer.get (mt->weight);     break;
          case KW_value:   thawer.get (mt->value);      break;
          case KW_density: thawer.get (mt->density);    break;

          case KW_EOF:
            goto done;

          default:
            if (!thawer.parse_error ("materials file"))
              goto done;
            break;
        }

      thawer.next ();
    }

done:
  LOG (llevDebug, "Done.\n");
}