4.4BSD/usr/src/games/rogue/spec_hit.c
/*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Timothy C. Stoehr.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)spec_hit.c 8.1 (Berkeley) 5/31/93";
#endif /* not lint */
/*
* special_hit.c
*
* This source herein may be modified and/or distributed by anybody who
* so desires, with the following restrictions:
* 1.) No portion of this notice shall be removed.
* 2.) Credit shall not be taken for the creation of this source.
* 3.) This code is not to be traded, sold, or used for personal
* gain or profit.
*
*/
#include "rogue.h"
short less_hp = 0;
boolean being_held;
extern short cur_level, max_level, blind, levitate, ring_exp;
extern long level_points[];
extern boolean detect_monster, mon_disappeared;
extern boolean sustain_strength, maintain_armor;
extern char *you_can_move_again;
special_hit(monster)
object *monster;
{
if ((monster->m_flags & CONFUSED) && rand_percent(66)) {
return;
}
if (monster->m_flags & RUSTS) {
rust(monster);
}
if ((monster->m_flags & HOLDS) && !levitate) {
being_held = 1;
}
if (monster->m_flags & FREEZES) {
freeze(monster);
}
if (monster->m_flags & STINGS) {
sting(monster);
}
if (monster->m_flags & DRAINS_LIFE) {
drain_life();
}
if (monster->m_flags & DROPS_LEVEL) {
drop_level();
}
if (monster->m_flags & STEALS_GOLD) {
steal_gold(monster);
} else if (monster->m_flags & STEALS_ITEM) {
steal_item(monster);
}
}
rust(monster)
object *monster;
{
if ((!rogue.armor) || (get_armor_class(rogue.armor) <= 1) ||
(rogue.armor->which_kind == LEATHER)) {
return;
}
if ((rogue.armor->is_protected) || maintain_armor) {
if (monster && (!(monster->m_flags & RUST_VANISHED))) {
message("the rust vanishes instantly", 0);
monster->m_flags |= RUST_VANISHED;
}
} else {
rogue.armor->d_enchant--;
message("your armor weakens", 0);
print_stats(STAT_ARMOR);
}
}
freeze(monster)
object *monster;
{
short freeze_percent = 99;
short i, n;
if (rand_percent(12)) {
return;
}
freeze_percent -= (rogue.str_current+(rogue.str_current / 2));
freeze_percent -= ((rogue.exp + ring_exp) * 4);
freeze_percent -= (get_armor_class(rogue.armor) * 5);
freeze_percent -= (rogue.hp_max / 3);
if (freeze_percent > 10) {
monster->m_flags |= FREEZING_ROGUE;
message("you are frozen", 1);
n = get_rand(4, 8);
for (i = 0; i < n; i++) {
mv_mons();
}
if (rand_percent(freeze_percent)) {
for (i = 0; i < 50; i++) {
mv_mons();
}
killed_by((object *)0, HYPOTHERMIA);
}
message(you_can_move_again, 1);
monster->m_flags &= (~FREEZING_ROGUE);
}
}
steal_gold(monster)
object *monster;
{
int amount;
if ((rogue.gold <= 0) || rand_percent(10)) {
return;
}
amount = get_rand((cur_level * 10), (cur_level * 30));
if (amount > rogue.gold) {
amount = rogue.gold;
}
rogue.gold -= amount;
message("your purse feels lighter", 0);
print_stats(STAT_GOLD);
disappear(monster);
}
steal_item(monster)
object *monster;
{
object *obj;
short i, n, t;
char desc[80];
boolean has_something = 0;
if (rand_percent(15)) {
return;
}
obj = rogue.pack.next_object;
if (!obj) {
goto DSPR;
}
while (obj) {
if (!(obj->in_use_flags & BEING_USED)) {
has_something = 1;
break;
}
obj = obj->next_object;
}
if (!has_something) {
goto DSPR;
}
n = get_rand(0, MAX_PACK_COUNT);
obj = rogue.pack.next_object;
for (i = 0; i <= n; i++) {
obj = obj->next_object;
while ((!obj) || (obj->in_use_flags & BEING_USED)) {
if (!obj) {
obj = rogue.pack.next_object;
} else {
obj = obj->next_object;
}
}
}
(void) strcpy(desc, "she stole ");
if (obj->what_is != WEAPON) {
t = obj->quantity;
obj->quantity = 1;
}
get_desc(obj, desc+10);
message(desc, 0);
obj->quantity = ((obj->what_is != WEAPON) ? t : 1);
vanish(obj, 0, &rogue.pack);
DSPR:
disappear(monster);
}
disappear(monster)
object *monster;
{
short row, col;
row = monster->row;
col = monster->col;
dungeon[row][col] &= ~MONSTER;
if (rogue_can_see(row, col)) {
mvaddch(row, col, get_dungeon_char(row, col));
}
take_from_pack(monster, &level_monsters);
free_object(monster);
mon_disappeared = 1;
}
cough_up(monster)
object *monster;
{
object *obj;
short row, col, i, n;
if (cur_level < max_level) {
return;
}
if (monster->m_flags & STEALS_GOLD) {
obj = alloc_object();
obj->what_is = GOLD;
obj->quantity = get_rand((cur_level * 15), (cur_level * 30));
} else {
if (!rand_percent((int) monster->drop_percent)) {
return;
}
obj = gr_object();
}
row = monster->row;
col = monster->col;
for (n = 0; n <= 5; n++) {
for (i = -n; i <= n; i++) {
if (try_to_cough(row+n, col+i, obj)) {
return;
}
if (try_to_cough(row-n, col+i, obj)) {
return;
}
}
for (i = -n; i <= n; i++) {
if (try_to_cough(row+i, col-n, obj)) {
return;
}
if (try_to_cough(row+i, col+n, obj)) {
return;
}
}
}
free_object(obj);
}
try_to_cough(row, col, obj)
short row, col;
object *obj;
{
if ((row < MIN_ROW) || (row > (DROWS-2)) || (col < 0) || (col>(DCOLS-1))) {
return(0);
}
if ((!(dungeon[row][col] & (OBJECT | STAIRS | TRAP))) &&
(dungeon[row][col] & (TUNNEL | FLOOR | DOOR))) {
place_at(obj, row, col);
if (((row != rogue.row) || (col != rogue.col)) &&
(!(dungeon[row][col] & MONSTER))) {
mvaddch(row, col, get_dungeon_char(row, col));
}
return(1);
}
return(0);
}
seek_gold(monster)
object *monster;
{
short i, j, rn, s;
if ((rn = get_room_number(monster->row, monster->col)) < 0) {
return(0);
}
for (i = rooms[rn].top_row+1; i < rooms[rn].bottom_row; i++) {
for (j = rooms[rn].left_col+1; j < rooms[rn].right_col; j++) {
if ((gold_at(i, j)) && !(dungeon[i][j] & MONSTER)) {
monster->m_flags |= CAN_FLIT;
s = mon_can_go(monster, i, j);
monster->m_flags &= (~CAN_FLIT);
if (s) {
move_mon_to(monster, i, j);
monster->m_flags |= ASLEEP;
monster->m_flags &= (~(WAKENS | SEEKS_GOLD));
return(1);
}
monster->m_flags &= (~SEEKS_GOLD);
monster->m_flags |= CAN_FLIT;
mv_1_monster(monster, i, j);
monster->m_flags &= (~CAN_FLIT);
monster->m_flags |= SEEKS_GOLD;
return(1);
}
}
}
return(0);
}
gold_at(row, col)
short row, col;
{
if (dungeon[row][col] & OBJECT) {
object *obj;
if ((obj = object_at(&level_objects, row, col)) &&
(obj->what_is == GOLD)) {
return(1);
}
}
return(0);
}
check_gold_seeker(monster)
object *monster;
{
monster->m_flags &= (~SEEKS_GOLD);
}
check_imitator(monster)
object *monster;
{
char msg[80];
if (monster->m_flags & IMITATES) {
wake_up(monster);
if (!blind) {
mvaddch(monster->row, monster->col,
get_dungeon_char(monster->row, monster->col));
check_message();
sprintf(msg, "wait, that's a %s!", mon_name(monster));
message(msg, 1);
}
return(1);
}
return(0);
}
imitating(row, col)
register short row, col;
{
if (dungeon[row][col] & MONSTER) {
object *object_at(), *monster;
if (monster = object_at(&level_monsters, row, col)) {
if (monster->m_flags & IMITATES) {
return(1);
}
}
}
return(0);
}
sting(monster)
object *monster;
{
short sting_chance = 35;
char msg[80];
if ((rogue.str_current <= 3) || sustain_strength) {
return;
}
sting_chance += (6 * (6 - get_armor_class(rogue.armor)));
if ((rogue.exp + ring_exp) > 8) {
sting_chance -= (6 * ((rogue.exp + ring_exp) - 8));
}
if (rand_percent(sting_chance)) {
sprintf(msg, "the %s's bite has weakened you",
mon_name(monster));
message(msg, 0);
rogue.str_current--;
print_stats(STAT_STRENGTH);
}
}
drop_level()
{
int hp;
if (rand_percent(80) || (rogue.exp <= 5)) {
return;
}
rogue.exp_points = level_points[rogue.exp-2] - get_rand(9, 29);
rogue.exp -= 2;
hp = hp_raise();
if ((rogue.hp_current -= hp) <= 0) {
rogue.hp_current = 1;
}
if ((rogue.hp_max -= hp) <= 0) {
rogue.hp_max = 1;
}
add_exp(1, 0);
}
drain_life()
{
short n;
if (rand_percent(60) || (rogue.hp_max <= 30) || (rogue.hp_current < 10)) {
return;
}
n = get_rand(1, 3); /* 1 Hp, 2 Str, 3 both */
if ((n != 2) || (!sustain_strength)) {
message("you feel weaker", 0);
}
if (n != 2) {
rogue.hp_max--;
rogue.hp_current--;
less_hp++;
}
if (n != 1) {
if ((rogue.str_current > 3) && (!sustain_strength)) {
rogue.str_current--;
if (coin_toss()) {
rogue.str_max--;
}
}
}
print_stats((STAT_STRENGTH | STAT_HP));
}
m_confuse(monster)
object *monster;
{
char msg[80];
if (!rogue_can_see(monster->row, monster->col)) {
return(0);
}
if (rand_percent(45)) {
monster->m_flags &= (~CONFUSES); /* will not confuse the rogue */
return(0);
}
if (rand_percent(55)) {
monster->m_flags &= (~CONFUSES);
sprintf(msg, "the gaze of the %s has confused you", mon_name(monster));
message(msg, 1);
cnfs();
return(1);
}
return(0);
}
flame_broil(monster)
object *monster;
{
short row, col, dir;
if ((!mon_sees(monster, rogue.row, rogue.col)) || coin_toss()) {
return(0);
}
row = rogue.row - monster->row;
col = rogue.col - monster->col;
if (row < 0) {
row = -row;
}
if (col < 0) {
col = -col;
}
if (((row != 0) && (col != 0) && (row != col)) ||
((row > 7) || (col > 7))) {
return(0);
}
dir = get_dir(monster->row, monster->col, row, col);
bounce(FIRE, dir, monster->row, monster->col, 0);
return(1);
}
get_dir(srow, scol, drow, dcol)
short srow, scol, drow, dcol;
{
if (srow == drow) {
if (scol < dcol) {
return(RIGHT);
} else {
return(LEFT);
}
}
if (scol == dcol) {
if (srow < drow) {
return(DOWN);
} else {
return(UPWARD);
}
}
if ((srow > drow) && (scol > dcol)) {
return(UPLEFT);
}
if ((srow < drow) && (scol < dcol)) {
return(DOWNRIGHT);
}
if ((srow < drow) && (scol > dcol)) {
return(DOWNLEFT);
}
/*if ((srow > drow) && (scol < dcol)) {*/
return(UPRIGHT);
/*}*/
}