server/server/time.C

/*
 * This file is part of Crossfire TRT, the Roguelike Realtime MORPG.
 * 
 * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Crossfire TRT team
 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team
 * Copyright (©) 1992,2007 Frank Tore Johansen
 * 
 * Crossfire TRT 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 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 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 <crossfire@schmorp.de>
 */

/*
 * Routines that is executed from objects based on their speed have been
 * collected in this file.
 */
#include <global.h>
#include <spells.h>
#include <sproto.h>

/* The following removes doors.  The functions check to see if similar 
 * doors are next to the one that is being removed, and if so, set it
 * so those will be removed shortly (in a cascade like fashion.)
 */
void
remove_door (object *op)
{
  int i;
  object *tmp;

  for (i = 1; i < 9; i += 2)
    if ((tmp = present (DOOR, op->map, op->x + freearr_x[i], op->y + freearr_y[i])) != NULL)
      {
        tmp->set_speed (0.1f);
        tmp->speed_left = -0.2f;
      }

  if (op->other_arch)
    {
      tmp = arch_to_object (op->other_arch);
      tmp->x = op->x;
      tmp->y = op->y;
      tmp->map = op->map;
      tmp->level = op->level;
      insert_ob_in_map (tmp, op->map, op, 0);
    }

  op->destroy ();
}

void
remove_door2 (object *op)
{
  int i;
  object *tmp;

  for (i = 1; i < 9; i += 2)
    {
      tmp = present (LOCKED_DOOR, op->map, op->x + freearr_x[i], op->y + freearr_y[i]);
      if (tmp && tmp->slaying == op->slaying)
        {                       /* same key both doors */
          tmp->set_speed (0.1f);
          tmp->speed_left = -0.2f;
        }
    }

  if (op->other_arch)
    {
      tmp = arch_to_object (op->other_arch);
      tmp->x = op->x;
      tmp->y = op->y;
      tmp->map = op->map;
      tmp->level = op->level;
      insert_ob_in_map (tmp, op->map, op, 0);
    }

  op->destroy ();
}

void
generate_monster (object *gen)
{
  if (!gen->map)
    return;

  if (GENERATE_SPEED (gen) && rndm (0, GENERATE_SPEED (gen) - 1))
    return;

  object *op;
  int i;

  if (QUERY_FLAG (gen, FLAG_CONTENT_ON_GEN))
    {
      // either copy one item from the inventory...
      if (!gen->inv)
        return;

      // first select one item from the inventory
      int index = 0;
      for (object *tmp = gen->inv; tmp; tmp = tmp->below)
        if (!rndm (++index))
          op = tmp;

      i = find_free_spot (op, gen->map, gen->x, gen->y, 1, 9);
      if (i < 0)
        return;

      op = object_create_clone (op);

      CLEAR_FLAG (op, FLAG_IS_A_TEMPLATE);
      unflag_inv (op, FLAG_IS_A_TEMPLATE);
    }
  else if (gen->other_arch)
    {
      // ...or use other_arch
      i = find_free_spot (gen->other_arch, gen->map, gen->x, gen->y, 1, 9);
      if (i < 0)
        return;

      op = arch_to_object (gen->other_arch);
    }
  else
    return;

  op->expand_tail ();

  if (insert_ob_in_map_at (op, gen->map, gen, 0, gen->x + freearr_x[i], gen->y + freearr_y[i]))
    {
      if (rndm (0, 9))
        generate_artifact (op, gen->map->difficulty);

      if (op->has_random_items ())
        create_treasure (op->randomitems, op, GT_APPLY, gen->map->difficulty);

      return;
    }

  op->destroy ();
}

void
remove_force (object *op)
{
  if (--op->duration > 0)
    return;

  if (op->env)
    switch (op->subtype)
      {
        case FORCE_CONFUSION:
          CLEAR_FLAG (op->env, FLAG_CONFUSED);
          new_draw_info (NDI_UNIQUE, 0, op->env, "You regain your senses.\n");

        default:
          CLEAR_FLAG (op, FLAG_APPLIED);
          change_abil (op->env, op);
          op->env->update_stats ();
      }

  op->destroy ();
}

void
remove_blindness (object *op)
{
  if (--op->stats.food > 0)
    return;

  CLEAR_FLAG (op, FLAG_APPLIED);

  if (op->env)
    {
      change_abil (op->env, op);
      op->env->update_stats ();
    }

  op->destroy ();
}

void
poison_more (object *op)
{
  if (op->env == NULL || !QUERY_FLAG (op->env, FLAG_ALIVE) || op->env->stats.hp < 0)
    {
      op->destroy ();
      return;
    }

  if (op->stats.food == 1)
    {
      /* need to unapply the object before update_stats is called, else fix_player
       * will not do anything.
       */
      if (op->env->type == PLAYER)
        {
          CLEAR_FLAG (op, FLAG_APPLIED);
          op->env->update_stats ();
          new_draw_info (NDI_UNIQUE, 0, op->env, "You feel much better now.");
        }

      op->destroy ();
      return;
    }

  if (op->env->type == PLAYER)
    {
      op->env->stats.food--;
      new_draw_info (NDI_UNIQUE, 0, op->env, "You feel very sick...");
    }

  hit_player (op->env, op->stats.dam, op, AT_INTERNAL, 1);
}


void
move_gate (object *op)
{                               /* 1 = going down, 0 = going up */
  object *tmp;

  if (op->stats.wc < 0 || (int) op->stats.wc >= NUM_ANIMATIONS (op))
    {
      LOG (llevError, "Gate error: animation was %d, max=%d\n", op->stats.wc, NUM_ANIMATIONS (op));
      op->stats.wc = 0;
    }

  /* We're going down */
  if (op->value)
    {
      if (--op->stats.wc <= 0)
        {                       /* Reached bottom, let's stop */
          op->stats.wc = 0;
          if (op->arch->speed)
            op->value = 0;
          else
            op->set_speed (0);
        }

      if ((int) op->stats.wc < (NUM_ANIMATIONS (op) / 2 + 1))
        {
          op->move_block = 0;
          CLEAR_FLAG (op, FLAG_BLOCKSVIEW);
          update_all_los (op->map, op->x, op->y);
        }

      SET_ANIMATION (op, op->stats.wc);
      update_object (op, UP_OBJ_CHANGE);
      return;
    }

  /* We're going up */

  /* First, lets see if we are already at the top */
  if ((unsigned char) op->stats.wc == (NUM_ANIMATIONS (op) - 1))
    {

      /* Check to make sure that only non pickable and non rollable
       * objects are above the gate.  If so, we finish closing the gate,
       * otherwise, we fall through to the code below which should lower
       * the gate slightly.
       */

      for (tmp = op->above; tmp; tmp = tmp->above)
        if (!QUERY_FLAG (tmp, FLAG_NO_PICK) || QUERY_FLAG (tmp, FLAG_CAN_ROLL) || QUERY_FLAG (tmp, FLAG_ALIVE))
          break;

      if (!tmp)
        {
          if (op->arch->speed)
            op->value = 1;
          else
            op->set_speed (0);

          return;
        }
    }

  if (op->stats.food)
    {                           /* The gate is going temporarily down */
      if (--op->stats.wc <= 0)
        {                       /* Gone all the way down? */
          op->stats.food = 0;   /* Then let's try again */
          op->stats.wc = 0;
        }
    }
  else
    {                           /* The gate is still going up */
      op->stats.wc++;

      if ((int) op->stats.wc >= (NUM_ANIMATIONS (op)))
        op->stats.wc = (signed char) NUM_ANIMATIONS (op) - 1;

      /* If there is something on top of the gate, we try to roll it off.
       * If a player/monster, we don't roll, we just hit them with damage
       */
      if ((int) op->stats.wc >= NUM_ANIMATIONS (op) / 2)
        {
          /* Halfway or further, check blocks */
          /* First, get the top object on the square. */
          for (tmp = op->above; tmp && tmp->above; tmp = tmp->above)
            ;

          if (tmp)
            {
              if (QUERY_FLAG (tmp, FLAG_ALIVE))
                {
                  hit_player (tmp, random_roll (0, op->stats.dam, tmp, PREFER_LOW), op, AT_PHYSICAL, 1);
                  op->play_sound (sound_find ("blocked_gate"));

                  if (tmp->type == PLAYER)
                    new_draw_info_format (NDI_UNIQUE, 0, tmp, "You are crushed by the %s!", &op->name);
                }
                /* If the object is not alive, and the object either can
                 * be picked up or the object rolls, move the object
                 * off the gate.
                 */
              else if (!QUERY_FLAG (tmp, FLAG_ALIVE) && (!QUERY_FLAG (tmp, FLAG_NO_PICK) || QUERY_FLAG (tmp, FLAG_CAN_ROLL)))
                {
                  /* If it has speed, it should move itself, otherwise: */
                  int i = find_free_spot (tmp, op->map, op->x, op->y, 1, 9);

                  /* If there is a free spot, move the object someplace */
                  if (i != -1)
                    {
                      tmp->remove ();
                      tmp->x += freearr_x[i], tmp->y += freearr_y[i];
                      insert_ob_in_map (tmp, op->map, op, 0);
                    }
                }
            }

          /* See if there is still anything blocking the gate */
          for (tmp = op->above; tmp; tmp = tmp->above)
            if (!QUERY_FLAG (tmp, FLAG_NO_PICK) || QUERY_FLAG (tmp, FLAG_CAN_ROLL) || QUERY_FLAG (tmp, FLAG_ALIVE))
              break;

          /* IF there is, start putting the gate down  */
          if (tmp)
            op->stats.food = 1;
          else
            {
              op->move_block = MOVE_ALL;

              if (!op->arch->stats.ac)
                SET_FLAG (op, FLAG_BLOCKSVIEW);
              update_all_los (op->map, op->x, op->y);
            }
        }                       /* gate is halfway up */

      SET_ANIMATION (op, op->stats.wc);
      update_object (op, UP_OBJ_CHANGE);
    }                           /* gate is going up */
}

/*  hp      : how long door is open/closed
 *  maxhp   : initial value for hp
 *  sp      : 1 = open, 0 = close
 */
void
move_timed_gate (object *op)
{
  int v = op->value;

  if (op->stats.sp)
    {
      move_gate (op);

      if (op->value != v)       /* change direction ? */
        op->stats.sp = 0;
      return;
    }

  if (--op->stats.hp <= 0)
    {                           /* keep gate down */
      move_gate (op);

      if (op->value != v)
        op->set_speed (0);
    }
}

/*  slaying:    name of the thing the detector is to look for
 *       speed:      frequency of 'glances'
 *       connected:  connected value of detector
 *  sp:         1 if detection sets buttons
 *              -1 if detection unsets buttons
 */

void
move_detector (object *op)
{
  object *tmp;
  int last = op->value;
  int detected;

  detected = 0;

  for (tmp = op->ms ().bot; tmp && !detected; tmp = tmp->above)
    {
      object *tmp2;

      if (op->stats.hp)
        {
          for (tmp2 = tmp->inv; tmp2; tmp2 = tmp2->below)
            {
              if (op->slaying && op->slaying == tmp->name)
                detected = 1;

              if (tmp2->type == FORCE && tmp2->slaying && tmp2->slaying == op->slaying)
                detected = 1;
            }
        }

      if (op->slaying && op->slaying == tmp->name)
        detected = 1;
      else if (tmp->type == SPECIAL_KEY && tmp->slaying == op->slaying)
        detected = 1;
    }

  /* the detector sets the button if detection is found */
  if (op->stats.sp == 1)
    {
      if (detected && last == 0)
        {
          op->value = 1;
          push_button (op);
        }

      if (!detected && last == 1)
        {
          op->value = 0;
          push_button (op);
        }
    }
  else
    {                           /* in this case, we unset buttons */
      if (detected && last == 1)
        {
          op->value = 0;
          push_button (op);
        }

      if (!detected && last == 0)
        {
          op->value = 1;
          push_button (op);
        }
    }
}

void
animate_trigger (object *op)
{
  if ((unsigned char) ++op->stats.wc >= NUM_ANIMATIONS (op))
    {
      op->stats.wc = 0;
      check_trigger (op, NULL);
    }
  else
    {
      SET_ANIMATION (op, op->stats.wc);
      update_object (op, UP_OBJ_FACE);
    }
}

void
move_hole (object *op)
{                               /* 1 = opening, 0 = closing */
  object *next, *tmp;

  if (op->value)
    {                           /* We're opening */
      if (--op->stats.wc <= 0)
        {                       /* Opened, let's stop */
          op->stats.wc = 0;
          op->set_speed (0);

          /* Hard coding this makes sense for holes I suppose */
          op->move_on = MOVE_WALK;
          for (tmp = op->above; tmp != NULL; tmp = next)
            {
              next = tmp->above;
              move_apply (op, tmp, tmp);
            }
        }

      SET_ANIMATION (op, op->stats.wc);
      update_object (op, UP_OBJ_FACE);
      return;
    }

  /* We're closing */
  op->move_on = 0;

  op->stats.wc++;
  if ((int) op->stats.wc >= NUM_ANIMATIONS (op))
    op->stats.wc = NUM_ANIMATIONS (op) - 1;

  SET_ANIMATION (op, op->stats.wc);
  update_object (op, UP_OBJ_FACE);
  if ((unsigned char) op->stats.wc == (NUM_ANIMATIONS (op) - 1))
    op->set_speed (0);     /* closed, let's stop */
}


/* stop_item() returns a pointer to the stopped object.  The stopped object
 * may or may not have been removed from maps or inventories.  It will not
 * have been merged with other items.
 *
 * This function assumes that only items on maps need special treatment.
 *
 * If the object can't be stopped, or it was destroyed while trying to stop
 * it, NULL is returned.
 *
 * fix_stopped_item() should be used if the stopped item should be put on
 * the map.
 */
object *
stop_item (object *op)
{
  if (op->map == NULL)
    return op;

  switch (op->type)
    {
      case THROWN_OBJ:
        {
          object *payload = op->inv;

          if (payload == NULL)
            return NULL;
          payload->remove ();
          op->destroy ();
          return payload;
        }

      case ARROW:
        if (op->has_active_speed ())
          op = fix_stopped_arrow (op);
        return op;

      default:
        return op;
    }
}

/* fix_stopped_item() - put stopped item where stop_item() had found it.
 * Inserts item into the old map, or merges it if it already is on the map.
 *
 * 'map' must be the value of op->map before stop_item() was called.
 */
void
fix_stopped_item (object *op, maptile *map, object *originator)
{
  if (map == NULL)
    return;

  if (QUERY_FLAG (op, FLAG_REMOVED))
    insert_ob_in_map (op, map, originator, 0);
  else if (op->type == ARROW)
    merge_ob (op, NULL);        /* only some arrows actually need this */
}

object *
fix_stopped_arrow (object *op)
{
  if (rndm (0, 99) < op->stats.food)
    {
      /* Small chance of breaking */
      op->destroy ();
      return NULL;
    }

  op->set_speed (0);
  op->direction = 0;
  op->move_on   = 0;
  op->move_type = 0;
  op->skill     = 0; // really?

  // restore original wc, dam, attacktype and slaying
  op->stats.wc   = op->stats.sp;
  op->stats.dam  = op->stats.hp;
  op->attacktype = op->stats.grace;

  if (op->spellarg)
    {
      op->slaying = op->spellarg;
      free (op->spellarg);
      op->spellarg = 0;
    }
  else
    op->slaying = 0;

  /* Reset these to zero, so that object::can_merge will work properly */
  op->spellarg = NULL;
  op->stats.sp = 0;
  op->stats.hp = 0;
  op->stats.grace = 0;
  op->level = 0;
  op->face = op->arch->face;
  op->owner = NULL;             /* So that stopped arrows will be saved */
  update_object (op, UP_OBJ_CHANGE);
  return op;
}

/* stop_arrow() - what to do when a non-living flying object
 * has to stop. Sept 96 - I added in thrown object code in
 * here too. -b.t.
 *
 * Returns a pointer to the stopped object (which will have been removed
 * from maps or inventories), or NULL if was destroyed.
 */
static void
stop_arrow (object *op)
{
  if (INVOKE_OBJECT (STOP, op))
    return;

  if (op->inv)
    {
      object *payload = op->inv;

      payload->remove ();
      payload->owner = 0;
      insert_ob_in_map (payload, op->map, payload, 0);
      op->destroy ();
    }
  else
    {
      op = fix_stopped_arrow (op);

      if (op)
        merge_ob (op, 0);
    }
}

/* Move an arrow along its course.  op is the arrow or thrown object.
 */
void
move_arrow (object *op)
{
  int was_reflected;

  if (!op->map)
    {
      LOG (llevError, "BUG: Arrow had no map.\n");
      op->destroy ();
      return;
    }

  /* we need to stop thrown objects at some point. Like here. */
  if (op->type == THROWN_OBJ)
    {
      /* If the object that the THROWN_OBJ encapsulates disappears,
       * we need to have this object go away also - otherwise, you get
       * left over remnants on the map.  Where this currently happens
       * is if the player throws a bomb - the bomb explodes on its own,
       * but this object sticks around.  We could handle the cleanup in the
       * bomb code, but there are potential other cases where that could happen,
       * and it is easy enough to clean it up here.
       */
      if (op->inv == NULL)
        {
          op->destroy ();
          return;
        }

      if (op->last_sp-- < 0)
        {
          stop_arrow (op);
          return;
        }
    }

  /* if the arrow is moving too slow.. stop it.  0.5 was chosen as lower
     values look rediculous. */
  if (op->speed < 0.5 && op->type == ARROW)
    {
      stop_arrow (op);
      return;
    }

  /* Calculate target map square */
  was_reflected = 0;

  mapxy pos (op); pos.move (op->direction);

  if (!pos.normalise ())
    {
      stop_arrow (op);
      return;
    }

  /* only need to look for living creatures if this flag is set */
  if (pos->flags () & P_IS_ALIVE)
    {
      object *tmp;

      for (tmp = pos->bot; tmp; tmp = tmp->above)
        if (QUERY_FLAG (tmp, FLAG_ALIVE))
          break;

      /* Not really fair, but don't let monsters hit themselves with
       * their own arrow - this can be because they fire it then
       * move into it.
       */
      if (tmp && tmp != op->owner)
        {
          /* Found living object, but it is reflecting the missile.  Update
           * as below. (Note that for living creatures there is a small
           * chance that reflect_missile fails.)
           */
          if (QUERY_FLAG (tmp, FLAG_REFL_MISSILE) && (rndm (0, 99)) < (90 - op->level / 10))
            {
              int number = op->face;

              op->direction = absdir (op->direction + 4);
              update_turn_face (op);
              was_reflected = 1;        /* skip normal movement calculations */
            }
          else
            {
              /* Attack the object. */
              op = hit_with_arrow (op, tmp);

              if (!op)
                return;
            }
        }                       /* if this is not hitting its owner */
    }                           /* if there is something alive on this space */

  if (OB_TYPE_MOVE_BLOCK (op, pos->move_block))
    {
      int retry = 0;

      /* if the object doesn't reflect, stop the arrow from moving
       * note that this code will now catch cases where a monster is
       * on a wall but has reflecting - the arrow won't reflect.
       * Mapmakers shouldn't put monsters on top of wall in the first
       * place, so I don't consider that a problem.
       */
      if (!QUERY_FLAG (op, FLAG_REFLECTING) || !(rndm (0, 19)))
        {
          stop_arrow (op);
          return;
        }
      else
        {
          /* If one of the major directions (n,s,e,w), just reverse it */
          if (op->direction & 1)
            {
              op->direction = absdir (op->direction + 4);
              retry = 1;
            }

          /* There were two blocks with identical code -
           * use this retry here to make this one block
           * that did the same thing.
           */
          while (retry < 2)
            {
              retry++;

              /* Need to check for P_OUT_OF_MAP: if the arrow is travelling
               * over a corner in a tiled map, it is possible that
               * op->direction is within an adjacent map but either
               * op->direction-1 or op->direction+1 does not exist.
               */
              mapxy pos1 (pos); pos1.move (absdir (op->direction - 1));
              bool left  = pos1.normalise () && OB_TYPE_MOVE_BLOCK (op, pos1->move_block);

              mapxy pos2 (pos); pos2.move (absdir (op->direction + 1));
              bool right = pos2.normalise () && OB_TYPE_MOVE_BLOCK (op, pos2->move_block);

              if (left == right)
                op->direction = absdir (op->direction + 4);
              else if (left)
                op->direction = absdir (op->direction + 2);
              else if (right)
                op->direction = absdir (op->direction - 2);

              /* If this space is not out of the map and not blocked, valid space -
               * don't need to retry again.
               */
              mapxy pos3 (pos); pos3.move (op->direction);
              if (pos3.normalise () && !OB_TYPE_MOVE_BLOCK (op, pos3->move_block))
                break;
            }

          /* Couldn't find a direction to move the arrow to - just
           * stop it from moving.
           */
          if (retry == 2)
            {
              stop_arrow (op);
              return;
            }

          /* update object image for new facing */
          /* many thrown objects *don't* have more than one face */
          if (GET_ANIM_ID (op))
            SET_ANIMATION (op, op->direction);
        }                       /* object is reflected */
    }                           /* object ran into a wall */

  /* decrease the speed as it flies. 0.05 means a standard bow will shoot
   * about 17 squares. Tune as needed.
   */
  op->speed -= 0.05;

  /* Move the arrow. */
  op->move_to (pos);
}

/* This routine doesnt seem to work for "inanimate" objects that
 * are being carried, ie a held torch leaps from your hands!. 
 * Modified this routine to allow held objects. b.t. */
void
change_object (object *op)
{                               /* Doesn`t handle linked objs yet */
  int i, j;

  if (op->other_arch == NULL)
    {
      LOG (llevError, "Change object (%s) without other_arch error.\n", &op->name);
      return;
    }

  /* In non-living items only change when food value is 0 */
  if (!QUERY_FLAG (op, FLAG_ALIVE))
    {
      if (op->stats.food-- > 0)
        return;
      else
        op->stats.food = 1;     /* so 1 other_arch is made */
    }

  object *pl = op->in_player ();
  object *env = op->env;

  op->remove ();
  for (i = 0; i < NROFNEWOBJS (op); i++)
    {
      object *tmp = arch_to_object (op->other_arch);

      if (op->type == LAMP)
        tmp->stats.food = op->stats.food - 1;

      tmp->stats.hp = op->stats.hp;     /* The only variable it keeps. */
      if (env)
        {
          tmp->x = env->x, tmp->y = env->y;
          tmp = insert_ob_in_ob (tmp, env);
          
          /* If this object is the players inventory, we need to tell the
           * client of the change.  Insert_ob_in_map takes care of the
           * updating the client, so we don't need to do that below.
           */
          if (pl)
            {
              esrv_del_item (pl->contr, op->count);
              esrv_send_item (pl, tmp);
            }
        }
      else
        {
          j = find_first_free_spot (tmp, op->map, op->x, op->y);
          if (j == -1)          /* No free spot */
            tmp->destroy ();
          else
            {
              tmp->x = op->x + freearr_x[j], tmp->y = op->y + freearr_y[j];
              insert_ob_in_map (tmp, op->map, op, 0);
            }
        }
    }

  op->destroy ();
}

void
move_teleporter (object *op)
{
  object *tmp, *head = op;

  /* if this is a multipart teleporter, handle the other parts
   * The check for speed isn't strictly needed - basically, if
   * there is an old multipart teleporter in which the other parts
   * have speed, we don't really want to call it twice for the same
   * function - in fact, as written below, part N would get called
   * N times without the speed check.
   */
  if (op->more && !op->more->has_active_speed ())
    move_teleporter (op->more);

  if (op->head)
    head = op->head;

  for (tmp = op->above; tmp; tmp = tmp->above)
    if (!QUERY_FLAG (tmp, FLAG_IS_FLOOR))
      break;

  /* If nothing above us to move, nothing to do */
  if (!tmp || QUERY_FLAG (tmp, FLAG_WIZPASS))
    return;

  if (EXIT_PATH (head))
    {
      if (tmp->type == PLAYER)
        {
          if (INVOKE_OBJECT (TRIGGER, op, ARG_OBJECT (tmp)))
            return;

          tmp->enter_exit (head);
        }
      else
        /* Currently only players can transfer maps */
        return;
    }
  else if (EXIT_X (head) || EXIT_Y (head))
    {
      if (out_of_map (head->map, EXIT_X (head), EXIT_Y (head)))
        {
          LOG (llevError, "Removed illegal teleporter.\n");
          head->destroy ();
          return;
        }

      if (INVOKE_OBJECT (TRIGGER, op, ARG_OBJECT (tmp)))
        return;

      transfer_ob (tmp, EXIT_X (head), EXIT_Y (head), 0, head);
    }
  else
    {
      /* Random teleporter */
      if (INVOKE_OBJECT (TRIGGER, op, ARG_OBJECT (tmp)))
        return;
      teleport (head, TELEPORTER, tmp);
    }
}

/*  This object will teleport someone to a different map
    and will also apply changes to the player from its inventory.
    This was invented for giving classes, but there's no reason it
    can't be generalized.
*/
void
move_player_changer (object *op)
{
  object *player;
  object *walk;

  if (!op->above || !EXIT_PATH (op))
    return;

  /* This isn't all that great - means that the player_mover
   * needs to be on top.
   */
  if (op->above->type == PLAYER)
    {
      if (INVOKE_OBJECT (TRIGGER, op, ARG_OBJECT (player)))
        return;

      player = op->above;

      for (walk = op->inv; walk; walk = walk->below)
        apply_changes_to_player (player, walk);

      player->update_stats ();

      esrv_send_inventory (op->above, op->above);
      esrv_update_item (UPD_FACE, op->above, op->above);

      /* update players death & WoR home-position */
      if (*EXIT_PATH (op) == '/')
        {
          player->contr->savebed_map = EXIT_PATH (op);
          player->contr->bed_x       = EXIT_X (op);
          player->contr->bed_y       = EXIT_Y (op);
        }
      else
        LOG (llevDebug, "WARNING: destination '%s' in player_changer must be an absolute path!\n", &EXIT_PATH (op));

      op->above->enter_exit (op);
    }
}

/* firewalls fire other spells.
 * The direction of the wall is stored in op->stats.sp.
 * walls can have hp, so they can be torn down.
 */
void
move_firewall (object *op)
{
  object *spell;

  if (!op->map)
    return;                     /* dm has created a firewall in his inventory */

  spell = op->inv;

  if (!spell || spell->type != SPELL)
    spell = op->other_arch;

  if (!spell)
    {
      LOG (llevError, "move_firewall: no spell specified (%s, %s, %d, %d)\n", &op->name, &op->map->name, op->x, op->y);
      return;
    }

  cast_spell (op, op, op->stats.sp ? op->stats.sp : rndm (1, 8), spell, NULL);
}

/*  move_player_mover:  this function takes a "player mover" as an
 * argument, and performs the function of a player mover, which is:
 *
 * a player mover finds any players that are sitting on it.  It
 * moves them in the op->stats.sp direction.  speed is how often it'll move.
 * If attacktype is nonzero it will paralyze the player.  If lifesave is set,
 * it'll dissapear after hp+1 moves.  If hp is set and attacktype is set,
 * it'll paralyze the victim for hp*his speed/op->speed
 */
void
move_player_mover (object *op)
{
  int dir = op->stats.sp;
  sint16 nx, ny;
  maptile *m;

  /* Determine direction now for random movers so we do the right thing */
  if (!dir)
    dir = rndm (1, 8);

  for (object *victim = op->ms ().bot; victim; victim = victim->above)
    {
      if (QUERY_FLAG (victim, FLAG_ALIVE) && !QUERY_FLAG (victim, FLAG_WIZPASS) &&
          (victim->move_type & op->move_type || !victim->move_type))
        {

          if (victim->head)
            victim = victim->head;

          if (QUERY_FLAG (op, FLAG_LIFESAVE) && op->stats.hp-- < 0)
            {
              op->remove ();
              return;
            }

          nx = op->x + freearr_x[dir];
          ny = op->y + freearr_y[dir];
          m = op->map;
          if (get_map_flags (m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP)
            {
              LOG (llevError, "move_player_mover: Trying to push player off the map! map=%s (%d, %d)\n", &m->path, op->x, op->y);
              return;
            }

          if (should_director_abort (op, victim))
            return;

          for (object *nextmover = m->at (nx, ny).bot; nextmover; nextmover = nextmover->above)
            {
              if (nextmover->type == PLAYERMOVER)
                nextmover->speed_left = -.99f;

              if (QUERY_FLAG (nextmover, FLAG_ALIVE))
                op->speed_left = -1.1f;        /* wait until the next thing gets out of the way */
            }

          if (victim->type == PLAYER)
            {
              /*  only level >=1 movers move people */
              if (op->level)
                {
                  /* Following is a bit of hack.  We need to make sure it
                   * is cleared, otherwise the player will get stuck in
                   * place.  This can happen if the player used a spell to
                   * get to this space.
                   */
                  victim->contr->fire_on = 0;
                  victim->speed_left = 1.f;
                  move_player (victim, dir);
                }
              else
                return;
            }
          else
            move_object (victim, dir);

          if (!op->stats.maxsp && op->attacktype)
            op->stats.maxsp = 2;

          if (op->attacktype)
            {                   /* flag to paralyze the player */
              victim->speed_left = max (-5.f, -FABS (op->stats.maxsp * victim->speed / op->speed));
            }
        }
    }
}

/*
 * Will duplicate a specified object placed on top of it.
 * connected: what will trigger it.
 * level: multiplier.  0 to destroy.
 * other_arch: the object to look for and duplicate.
 */

void
move_duplicator (object *op)
{
  object *tmp;

  if (!op->other_arch)
    {
      LOG (llevInfo, "Duplicator with no other_arch! %d %d %s\n", op->x, op->y, op->map ? &op->map->path : "nullmap");
      return;
    }

  if (op->above == NULL)
    return;

  for (tmp = op->above; tmp; tmp = tmp->above)
    {
      if (op->other_arch->archname == tmp->arch->archname)
        {
          if (op->level <= 0)
            tmp->destroy ();
          else
            {
              uint64 new_nrof = (uint64) tmp->nrof * op->level;

              if (new_nrof >= 1UL << 31)
                new_nrof = 1UL << 31;

              tmp->nrof = new_nrof;
            }

          break;
        }
    }
}

/* move_creator (by peterm) 
 * it has the creator object create it's other_arch right on top of it.
 * connected:  what will trigger it
 * hp:  how many times it may create before stopping
 * lifesave:  if set, it'll never disappear but will go on creating
 *    everytime it's triggered
 * other_arch:  the object to create
 * Note this can create large objects, however, in that case, it
 * has to make sure that there is in fact space for the object.
 * It should really do this for small objects also, but there is
 * more concern with large objects, most notably a part being placed
 * outside of the map which would cause the server to crash
*/
void
move_creator (object *creator)
{
  object *new_ob;

  if (!QUERY_FLAG (creator, FLAG_LIFESAVE) && --creator->stats.hp < 0)
    {
      creator->stats.hp = -1;
      return;
    }

  if (creator->inv != NULL)
    {
      object *ob;
      int i;
      object *ob_to_copy;

      /* select random object from inventory to copy */
      ob_to_copy = creator->inv;
      for (ob = creator->inv->below, i = 1; ob != NULL; ob = ob->below, i++)
        {
          if (rndm (0, i) == 0)
            {
              ob_to_copy = ob;
            }
        }
      new_ob = object_create_clone (ob_to_copy);
      CLEAR_FLAG (new_ob, FLAG_IS_A_TEMPLATE);
      unflag_inv (new_ob, FLAG_IS_A_TEMPLATE);
    }
  else
    {
      if (creator->other_arch == NULL)
        {
          LOG (llevError, "move_creator: Creator doesn't have other arch set: %s (%s, %d, %d)\n",
               &creator->name, &creator->map->path, creator->x, creator->y);
          return;
        }

      new_ob = object_create_arch (creator->other_arch);
      fix_generated_item (new_ob, creator, 0, 0, GT_MINIMAL);
    }

  /* Make sure this multipart object fits */
  if (new_ob->arch->more && ob_blocked (new_ob, creator->map, creator->x, creator->y))
    {
      new_ob->destroy ();
      return;
    }

  // for now lets try to identify everything generated here, it mostly
  // happens automated, so this will at least fix many identify-experience holes
  SET_FLAG (new_ob, FLAG_IDENTIFIED);

  insert_ob_in_map_at (new_ob, creator->map, creator, 0, creator->x, creator->y);
  if (QUERY_FLAG (new_ob, FLAG_FREED))
    return;

  if (creator->slaying)
    {
      new_ob->name = new_ob->title = creator->slaying;
    }
}

/* move_marker --peterm@soda.csua.berkeley.edu
   when moved, a marker will search for a player sitting above
   it, and insert an invisible, weightless force into him
   with a specific code as the slaying field.
   At that time, it writes the contents of its own message
   field to the player.  The marker will decrement hp to
   0 and then delete itself every time it grants a mark.
   unless hp was zero to start with, in which case it is infinite.*/
void
move_marker (object *op)
{
  if (object *tmp = op->ms ().player ())
    {
      /* remove an old force with a slaying field == op->name */
      if (object *force = tmp->force_find (op->name))
        force->destroy ();

      if (!tmp->force_find (op->slaying))
        {
          tmp->force_add (op->slaying, op->stats.food);

          if (op->msg)
            new_draw_info (NDI_UNIQUE | NDI_NAVY, 0, tmp, op->msg);

          if (op->stats.hp > 0)
            {
              op->stats.hp--;

              if (op->stats.hp == 0)
                {
                  /* marker expires--granted mark number limit */
                  op->destroy ();
                  return;
                }
            }
        }
    }
}

void
process_object (object *op)
{
  if (expect_false (QUERY_FLAG (op, FLAG_IS_A_TEMPLATE)))
    return;

  if (expect_false (INVOKE_OBJECT (TICK, op)))
    return;

  if (QUERY_FLAG (op, FLAG_MONSTER))
    if (move_monster (op) || QUERY_FLAG (op, FLAG_FREED))
      return;

  if (QUERY_FLAG (op, FLAG_ANIMATE) && op->anim_speed == 0)
    {
      animate_object (op, op->contr ? op->facing : op->direction);

      if (QUERY_FLAG (op, FLAG_SEE_ANYWHERE))
        make_sure_seen (op);
    }

  if (expect_false (
        op->flag [FLAG_GENERATOR]
        || op->flag [FLAG_CHANGING]
        || op->flag [FLAG_IS_USED_UP]
     ))
    {
      if (QUERY_FLAG (op, FLAG_CHANGING) && !op->state)
        {
          change_object (op);
          return;
        }

      if (QUERY_FLAG (op, FLAG_GENERATOR) && !QUERY_FLAG (op, FLAG_FRIENDLY))
        generate_monster (op);

      if (QUERY_FLAG (op, FLAG_IS_USED_UP) && --op->stats.food <= 0)
        {
          if (QUERY_FLAG (op, FLAG_APPLIED))
            remove_force (op);
          else
            {
              /* If necessary, delete the item from the players inventory */
              object *pl = op->in_player ();

              if (pl)
                esrv_del_item (pl->contr, op->count);

              op->remove ();

              if (QUERY_FLAG (op, FLAG_SEE_ANYWHERE))
                make_sure_not_seen (op);

              op->destroy ();
            }

          return;
        }
    }

  switch (op->type)
    {
      case SPELL_EFFECT:
        move_spell_effect (op);
        break;

      case ROD:
      case HORN:
        regenerate_rod (op);
        break;

      case FORCE:
      case POTION_EFFECT:
        remove_force (op);
        break;

      case BLINDNESS:
        remove_blindness (op);
        break;

      case POISONING:
        poison_more (op);
        break;

      case DISEASE:
        move_disease (op);
        break;

      case SYMPTOM:
        move_symptom (op);
        break;

      case THROWN_OBJ:
      case ARROW:
        move_arrow (op);
        break;

      case DOOR:
        remove_door (op);
        break;

      case LOCKED_DOOR:
        remove_door2 (op);
        break;

      case TELEPORTER:
        move_teleporter (op);
        break;

      case GOLEM:
        move_golem (op);
        break;

      case EARTHWALL:
        hit_player (op, 2, op, AT_PHYSICAL, 1);
        break;

      case FIREWALL:
        move_firewall (op);
        if (op->stats.maxsp)
          animate_turning (op);
        break;

      case MOOD_FLOOR:
        do_mood_floor (op);
        break;

      case GATE:
        move_gate (op);
        break;

      case TIMED_GATE:
        move_timed_gate (op);
        break;

      case TRIGGER:
      case TRIGGER_BUTTON:
      case TRIGGER_PEDESTAL:
      case TRIGGER_ALTAR:
        animate_trigger (op);
        break;

      case DETECTOR:
        move_detector (op);

      case DIRECTOR:
        if (op->stats.maxsp)
          animate_turning (op);
        break;

      case HOLE:
        move_hole (op);
        break;

      case DEEP_SWAMP:
        move_deep_swamp (op);
        break;

      case RUNE:
      case TRAP:
        move_rune (op);
        break;

      case PLAYERMOVER:
        move_player_mover (op);
        break;

      case CREATOR:
        move_creator (op);
        break;

      case MARKER:
        move_marker (op);
        break;

      case PLAYER_CHANGER:
        move_player_changer (op);
        break;

      case PEACEMAKER:
        move_peacemaker (op);
        break;

      case PLAYER:
        // players have their own speed-management, so undo the --speed_left
        ++op->speed_left;
        break;
    }
}

Revision:	1.66
Committed:	Mon Aug 27 06:29:18 2007 UTC (16 years, 8 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.65:	+26 -39 lines
Log Message:	- create a new class, mapxy, which abstracts a mapspace position. - rewrite move_arrow to take advantage of this new experiemntal class. I don't understand move_arrow, but the code without doubt became clearer and simpler. this opens the way of rewriting the rather clumsy get_map_flags etc. API into something more efficient below mapxy.