/**
* Lets the given monster attempt to reproduce.
*
* Note that "reproduction" REQUIRES empty space.
*
* Returns true if the monster successfully reproduced.
*/
bool multiply_monster(const struct monster *mon)
{
int i, y, x;
bool result = false;
/* Try up to 18 times */
for (i = 0; i < 18; i++) {
int d = 1;
/* Pick a location */
scatter(cave, &y, &x, mon->fy, mon->fx, d, true);
/* Require an "empty" floor grid */
if (!square_isempty(cave, y, x)) continue;
/* Create a new monster (awake, no groups) */
result = place_new_monster(cave, y, x, mon->race, false, false,
ORIGIN_DROP_BREED);
/* Done */
break;
}
/* Result */
return (result);
}
/*
* Summon a creature of the specified type
*
* This function is rather dangerous XXX XXX XXX
*/
static void do_cmd_wiz_named(int r_idx, bool slp)
{
int py = p_ptr->py;
int px = p_ptr->px;
int i, x, y;
/* Paranoia */
if (!r_idx) return;
if (r_idx >= z_info->r_max-1) return;
/* Try 10 times */
for (i = 0; i < 10; i++) {
int d = 1;
/* Pick a location */
scatter(&y, &x, py, px, d, 0);
/* Require empty grids */
if (!cave_empty_bold(y, x)) continue;
/* Place it (allow groups) */
if (place_new_monster(cave, y, x, r_idx, slp, TRUE, ORIGIN_DROP_WIZARD)) break;
}
}
/**
* Picks a monster race, makes a new monster of that race, then attempts to
* place it in the dungeon. The monster race chosen will be appropriate for
* dungeon level equal to `depth`.
*
* If `sleep` is true, the monster is placed with its default sleep value,
* which is given in monster.txt.
*
* If `group_okay` is true, we allow the placing of a group, if the chosen
* monster appears with friends or an escort.
*
* `origin` is the item origin to use for any monster drops (e.g. ORIGIN_DROP,
* ORIGIN_DROP_PIT, etc.)
*
* Returns TRUE if we successfully place a monster.
*/
bool pick_and_place_monster(struct cave *c, int y, int x, int depth, bool sleep,
bool group_okay, byte origin)
{
/* Pick a monster race */
monster_race *race = get_mon_num(depth);
if (!race) return (FALSE);
/* Attempt to place the monster */
return (place_new_monster(c, y, x, race, sleep, group_okay, origin));
}
/**
* Picks a monster race, makes a new monster of that race, then attempts to
* place it in the dungeon. The monster race chosen will be appropriate for
* dungeon level equal to `depth`.
*
* If `sleep` is true, the monster is placed with its default sleep value,
* which is given in monster.txt.
*
* If `group_okay` is true, we allow the placing of a group, if the chosen
* monster appears with friends or an escort.
*
* `origin` is the item origin to use for any monster drops (e.g. ORIGIN_DROP,
* ORIGIN_DROP_PIT, etc.)
*
* Returns true if we successfully place a monster.
*/
bool pick_and_place_monster(struct chunk *c, int y, int x, int depth,
bool sleep, bool group_okay, byte origin)
{
/* Pick a monster race */
struct monster_race *race = get_mon_num(depth);
if (race) {
return place_new_monster(c, y, x, race, sleep, group_okay, origin);
} else {
return false;
}
}
/**
* Picks a monster race, makes a new monster of that race, then attempts to
* place it in the dungeon. The monster race chosen will be appropriate for
* dungeon level equal to `depth`.
*
* If `sleep` is true, the monster is placed with its default sleep value,
* which is given in monster.txt.
*
* If `group_okay` is true, we allow the placing of a group, if the chosen
* monster appears with friends or an escort.
*
* `origin` is the item origin to use for any monster drops (e.g. ORIGIN_DROP,
* ORIGIN_DROP_PIT, etc.)
*
* Returns TRUE if we successfully place a monster.
*/
bool pick_and_place_monster(struct cave *c, int y, int x, int depth, bool sleep,
bool group_okay, byte origin)
{
int r_idx;
/* Pick a monster race */
r_idx = get_mon_num(depth);
/* Handle failure */
if (!r_idx) return (FALSE);
/* Attempt to place the monster */
return (place_new_monster(c, y, x, r_idx, sleep, group_okay, origin));
}
/*
* Summon a creature of the specified type
*
* This function is rather dangerous XXX XXX XXX
*/
static void do_cmd_wiz_named(monster_race *r, bool slp)
{
int py = p_ptr->py;
int px = p_ptr->px;
int i, x, y;
/* Paranoia */
assert(r);
/* Try 10 times */
for (i = 0; i < 10; i++) {
int d = 1;
/* Pick a location */
scatter(&y, &x, py, px, d, TRUE);
/* Require empty grids */
if (!cave_isempty(cave, y, x)) continue;
/* Place it (allow groups) */
if (place_new_monster(cave, y, x, r, slp, TRUE, ORIGIN_DROP_WIZARD)) break;
}
}
/**
* Places a monster (of the specified "type") near the given
* location. Return the siummoned monster's level iff a monster was
* actually summoned.
*
* We will attempt to place the monster up to 10 times before giving up.
*
* This function takes the "monster level"
* of the summoning monster as a parameter, and use that, along with
* the current dungeon level, to help determine the level of the
* desired monster. Note that this is an upper bound, and also
* tends to "prefer" monsters of that level. Currently, we use
* the average of the dungeon and monster levels, and then add
* five to allow slight increases in monster power.
*
* Note that we use the new "monster allocation table" creation code
* to restrict the "get_mon_num()" function to the set of "legal"
* monsters, making this function much faster and more reliable.
*
* Note that this function may not succeed, though this is very rare.
*/
int summon_specific(int y1, int x1, int lev, int type, bool delay, bool call)
{
int i, x = 0, y = 0;
struct monster *mon;
struct monster_race *race;
/* Look for a location, allow up to 4 squares away */
for (i = 0; i < 60; ++i) {
/* Pick a distance */
int d = (i / 15) + 1;
/* Pick a location */
scatter(cave, &y, &x, y1, x1, d, true);
/* Require "empty" floor grid */
if (!square_isempty(cave, y, x)) continue;
/* No summon on glyphs */
if (square_iswarded(cave, y, x) || square_isdecoyed(cave, y, x)) {
continue;
}
/* Okay */
break;
}
/* Failure */
if (i == 60) return (0);
/* Save the "summon" type */
summon_specific_type = type;
/* Use the new calling scheme if requested */
if (call && (type != summon_name_to_idx("UNIQUE")) &&
(type != summon_name_to_idx("WRAITH"))) {
return (call_monster(y, x));
}
/* Prepare allocation table */
get_mon_num_prep(summon_specific_okay);
/* Pick a monster, using the level calculation */
race = get_mon_num((player->depth + lev) / 2 + 5);
/* Prepare allocation table */
get_mon_num_prep(NULL);
/* Handle failure */
if (!race) return (0);
/* Attempt to place the monster (awake, don't allow groups) */
if (!place_new_monster(cave, y, x, race, false, false, ORIGIN_DROP_SUMMON))
return (0);
/* Success, return the level of the monster */
mon = square_monster(cave, y, x);
/* If delay, try to let the player act before the summoned monsters,
* including slowing down faster monsters for one turn */
/* XXX should this now be hold monster for a turn? */
if (delay) {
mon->energy = 0;
if (mon->race->speed > player->state.speed)
mon_inc_timed(mon, MON_TMD_SLOW, 1, MON_TMD_FLG_NOMESSAGE, false);
}
return (mon->race->level);
}
/**
* Generate a random level.
*
* Confusingly, this function also generate the town level (level 0).
* \param c is the level we're going to end up with, in practice the global cave
* \param p is the current player struct, in practice the global player
*/
void cave_generate(struct chunk **c, struct player *p) {
const char *error = "no generation";
int y, x, tries = 0;
struct chunk *chunk;
assert(c);
/* Generate */
for (tries = 0; tries < 100 && error; tries++) {
struct dun_data dun_body;
error = NULL;
/* Mark the dungeon as being unready (to avoid artifact loss, etc) */
character_dungeon = FALSE;
/* Allocate global data (will be freed when we leave the loop) */
dun = &dun_body;
dun->cent = mem_zalloc(z_info->level_room_max * sizeof(struct loc));
dun->door = mem_zalloc(z_info->level_door_max * sizeof(struct loc));
dun->wall = mem_zalloc(z_info->wall_pierce_max * sizeof(struct loc));
dun->tunn = mem_zalloc(z_info->tunn_grid_max * sizeof(struct loc));
/* Choose a profile and build the level */
dun->profile = choose_profile(p->depth);
chunk = dun->profile->builder(p);
if (!chunk) {
error = "Failed to find builder";
mem_free(dun->cent);
mem_free(dun->door);
mem_free(dun->wall);
mem_free(dun->tunn);
continue;
}
/* Ensure quest monsters */
if (is_quest(chunk->depth)) {
int i;
for (i = 1; i < z_info->r_max; i++) {
monster_race *r_ptr = &r_info[i];
int y, x;
/* The monster must be an unseen quest monster of this depth. */
if (r_ptr->cur_num > 0) continue;
if (!rf_has(r_ptr->flags, RF_QUESTOR)) continue;
if (r_ptr->level != chunk->depth) continue;
/* Pick a location and place the monster */
find_empty(chunk, &y, &x);
place_new_monster(chunk, y, x, r_ptr, TRUE, TRUE, ORIGIN_DROP);
}
}
/* Clear generation flags. */
for (y = 0; y < chunk->height; y++) {
for (x = 0; x < chunk->width; x++) {
sqinfo_off(chunk->squares[y][x].info, SQUARE_WALL_INNER);
sqinfo_off(chunk->squares[y][x].info, SQUARE_WALL_OUTER);
sqinfo_off(chunk->squares[y][x].info, SQUARE_WALL_SOLID);
sqinfo_off(chunk->squares[y][x].info, SQUARE_MON_RESTRICT);
}
}
/* Regenerate levels that overflow their maxima */
if (cave_monster_max(chunk) >= z_info->level_monster_max)
error = "too many monsters";
if (error) ROOM_LOG("Generation restarted: %s.", error);
mem_free(dun->cent);
mem_free(dun->door);
mem_free(dun->wall);
mem_free(dun->tunn);
}
if (error) quit_fmt("cave_generate() failed 100 times!");
/* Free the old cave, use the new one */
if (*c)
cave_free(*c);
*c = chunk;
/* Place dungeon squares to trigger feeling (not in town) */
if (player->depth)
place_feeling(*c);
/* Save the town */
else if (!chunk_find_name("Town")) {
struct chunk *town = chunk_write(0, 0, z_info->town_hgt,
z_info->town_wid, FALSE, FALSE, FALSE);
town->name = string_make("Town");
chunk_list_add(town);
}
(*c)->feeling = calc_obj_feeling(*c) + calc_mon_feeling(*c);
/* Validate the dungeon (we could use more checks here) */
chunk_validate_objects(*c);
/* The dungeon is ready */
character_dungeon = TRUE;
/* Free old and allocate new known level */
if (cave_k)
cave_free(cave_k);
cave_k = cave_new(cave->height, cave->width);
if (!cave->depth)
cave_known();
(*c)->created_at = turn;
}