NetBSD-5.0.2/games/rogue/move.c
/* $NetBSD: move.c,v 1.11 2008/01/14 03:50:02 dholland Exp $ */
/*
* 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. 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)move.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: move.c,v 1.11 2008/01/14 03:50:02 dholland Exp $");
#endif
#endif /* not lint */
/*
* move.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 m_moves = 0;
boolean jump = 0;
const char *you_can_move_again = "you can move again";
int
one_move_rogue(short dirch, short pickup)
{
short row, col;
object *obj;
char desc[DCOLS];
short status, d = 0; /* XXX: GCC */
row = rogue.row;
col = rogue.col;
if (confused) {
dirch = gr_dir();
}
(void)is_direction(dirch, &d);
get_dir_rc(d, &row, &col, 1);
if (!can_move(rogue.row, rogue.col, row, col)) {
return(MOVE_FAILED);
}
if (being_held || bear_trap) {
if (!(dungeon[row][col] & MONSTER)) {
if (being_held) {
messagef(1, "you are being held");
} else {
messagef(0, "you are still stuck in the bear trap");
(void)reg_move();
}
return(MOVE_FAILED);
}
}
if (r_teleport) {
if (rand_percent(R_TELE_PERCENT)) {
tele();
return(STOPPED_ON_SOMETHING);
}
}
if (dungeon[row][col] & MONSTER) {
rogue_hit(object_at(&level_monsters, row, col), 0);
(void)reg_move();
return(MOVE_FAILED);
}
if (dungeon[row][col] & DOOR) {
if (cur_room == PASSAGE) {
cur_room = get_room_number(row, col);
if (cur_room == NO_ROOM)
clean_up("one_move_rogue: door to nowhere");
light_up_room(cur_room);
wake_room(cur_room, 1, row, col);
} else {
light_passage(row, col);
}
} else if ((dungeon[rogue.row][rogue.col] & DOOR) &&
(dungeon[row][col] & TUNNEL)) {
light_passage(row, col);
wake_room(cur_room, 0, rogue.row, rogue.col);
darken_room(cur_room);
cur_room = PASSAGE;
} else if (dungeon[row][col] & TUNNEL) {
light_passage(row, col);
}
mvaddch(rogue.row, rogue.col, get_dungeon_char(rogue.row, rogue.col));
mvaddch(row, col, rogue.fchar);
if (!jump) {
refresh();
}
rogue.row = row;
rogue.col = col;
if (dungeon[row][col] & OBJECT) {
if (levitate && pickup) {
return(STOPPED_ON_SOMETHING);
}
if (pickup && !levitate) {
if ((obj = pick_up(row, col, &status)) != NULL) {
get_desc(obj, desc, sizeof(desc));
if (obj->what_is == GOLD) {
free_object(obj);
messagef(1, "%s", desc);
goto NOT_IN_PACK;
}
} else if (!status) {
goto MVED;
} else {
goto MOVE_ON;
}
} else {
MOVE_ON:
obj = object_at(&level_objects, row, col);
get_desc(obj, desc, sizeof(desc));
messagef(1, "moved onto %s", desc);
goto NOT_IN_PACK;
}
messagef(1, "%s(%c)", desc, obj->ichar);
NOT_IN_PACK:
(void)reg_move();
return(STOPPED_ON_SOMETHING);
}
if (dungeon[row][col] & (DOOR | STAIRS | TRAP)) {
if ((!levitate) && (dungeon[row][col] & TRAP)) {
trap_player(row, col);
}
(void)reg_move();
return(STOPPED_ON_SOMETHING);
}
MVED: if (reg_move()) { /* fainted from hunger */
return(STOPPED_ON_SOMETHING);
}
return((confused ? STOPPED_ON_SOMETHING : MOVED));
}
void
multiple_move_rogue(short dirch)
{
short row, col;
short m;
switch(dirch) {
case '\010':
case '\012':
case '\013':
case '\014':
case '\031':
case '\025':
case '\016':
case '\002':
do {
row = rogue.row;
col = rogue.col;
if (((m = one_move_rogue((dirch + 96), 1)) == MOVE_FAILED) ||
(m == STOPPED_ON_SOMETHING) ||
interrupted) {
break;
}
} while (!next_to_something(row, col));
if ( (!interrupted) && passgo && (m == MOVE_FAILED) &&
(dungeon[rogue.row][rogue.col] & TUNNEL)) {
turn_passage(dirch + 96, 0);
}
break;
case 'H':
case 'J':
case 'K':
case 'L':
case 'B':
case 'Y':
case 'U':
case 'N':
while ((!interrupted) && (one_move_rogue((dirch + 32), 1) == MOVED))
;
if ( (!interrupted) && passgo &&
(dungeon[rogue.row][rogue.col] & TUNNEL)) {
turn_passage(dirch + 32, 1);
}
break;
}
}
boolean
is_passable(int row, int col)
{
if ((row < MIN_ROW) || (row > (DROWS - 2)) || (col < 0) ||
(col > (DCOLS-1))) {
return(0);
}
if (dungeon[row][col] & HIDDEN) {
return((dungeon[row][col] & TRAP) ? 1 : 0);
}
return(dungeon[row][col] & (FLOOR | TUNNEL | DOOR | STAIRS | TRAP));
}
boolean
next_to_something(int drow, int dcol)
{
short i, j, i_end, j_end, row, col;
short pass_count = 0;
unsigned short s;
if (confused) {
return(1);
}
if (blind) {
return(0);
}
i_end = (rogue.row < (DROWS-2)) ? 1 : 0;
j_end = (rogue.col < (DCOLS-1)) ? 1 : 0;
for (i = ((rogue.row > MIN_ROW) ? -1 : 0); i <= i_end; i++) {
for (j = ((rogue.col > 0) ? -1 : 0); j <= j_end; j++) {
if ((i == 0) && (j == 0)) {
continue;
}
if (((rogue.row+i) == drow) && ((rogue.col+j) == dcol)) {
continue;
}
row = rogue.row + i;
col = rogue.col + j;
s = dungeon[row][col];
if (s & HIDDEN) {
continue;
}
/* If the rogue used to be right, up, left, down, or right of
* row,col, and now isn't, then don't stop */
if (s & (MONSTER | OBJECT | STAIRS)) {
if (((row == drow) || (col == dcol)) &&
(!((row == rogue.row) || (col == rogue.col)))) {
continue;
}
return(1);
}
if (s & TRAP) {
if (!(s & HIDDEN)) {
if (((row == drow) || (col == dcol)) &&
(!((row == rogue.row) || (col == rogue.col)))) {
continue;
}
return(1);
}
}
if ((((i - j) == 1) || ((i - j) == -1)) && (s & TUNNEL)) {
if (++pass_count > 1) {
return(1);
}
}
if ((s & DOOR) && ((i == 0) || (j == 0))) {
return(1);
}
}
}
return(0);
}
boolean
can_move(int row1, int col1, int row2, int col2)
{
if (!is_passable(row2, col2)) {
return(0);
}
if ((row1 != row2) && (col1 != col2)) {
if ((dungeon[row1][col1] & DOOR) || (dungeon[row2][col2] & DOOR)) {
return(0);
}
if ((!dungeon[row1][col2]) || (!dungeon[row2][col1])) {
return(0);
}
}
return(1);
}
void
move_onto(void)
{
short ch, d;
boolean first_miss = 1;
while (!is_direction(ch = rgetchar(), &d)) {
sound_bell();
if (first_miss) {
messagef(0, "direction? ");
first_miss = 0;
}
}
check_message();
if (ch != CANCEL) {
(void)one_move_rogue(ch, 0);
}
}
boolean
is_direction(short c, short *d)
{
switch(c) {
case 'h':
*d = LEFT;
break;
case 'j':
*d = DOWN;
break;
case 'k':
*d = UPWARD;
break;
case 'l':
*d = RIGHT;
break;
case 'b':
*d = DOWNLEFT;
break;
case 'y':
*d = UPLEFT;
break;
case 'u':
*d = UPRIGHT;
break;
case 'n':
*d = DOWNRIGHT;
break;
case CANCEL:
break;
default:
return(0);
}
return(1);
}
boolean
check_hunger(boolean msg_only)
{
short i, n;
boolean fainted = 0;
if (rogue.moves_left == HUNGRY) {
(void)strlcpy(hunger_str, "hungry", sizeof(hunger_str));
messagef(0, "%s", hunger_str);
print_stats(STAT_HUNGER);
}
if (rogue.moves_left == WEAK) {
(void)strlcpy(hunger_str, "weak", sizeof(hunger_str));
messagef(1, "%s", hunger_str);
print_stats(STAT_HUNGER);
}
if (rogue.moves_left <= FAINT) {
if (rogue.moves_left == FAINT) {
(void)strlcpy(hunger_str, "faint", sizeof(hunger_str));
messagef(1, "%s", hunger_str);
print_stats(STAT_HUNGER);
}
n = get_rand(0, (FAINT - rogue.moves_left));
if (n > 0) {
fainted = 1;
if (rand_percent(40)) {
rogue.moves_left++;
}
messagef(1, "you faint");
for (i = 0; i < n; i++) {
if (coin_toss()) {
mv_mons();
}
}
messagef(1, you_can_move_again);
}
}
if (msg_only) {
return(fainted);
}
if (rogue.moves_left <= STARVE) {
killed_by(NULL, STARVATION);
}
switch(e_rings) {
/*case -2:
Subtract 0, i.e. do nothing.
break;*/
case -1:
rogue.moves_left -= (rogue.moves_left % 2);
break;
case 0:
rogue.moves_left--;
break;
case 1:
rogue.moves_left--;
(void)check_hunger(1);
rogue.moves_left -= (rogue.moves_left % 2);
break;
case 2:
rogue.moves_left--;
(void)check_hunger(1);
rogue.moves_left--;
break;
}
return(fainted);
}
boolean
reg_move(void)
{
boolean fainted;
if ((rogue.moves_left <= HUNGRY) || (cur_level >= max_level)) {
fainted = check_hunger(0);
} else {
fainted = 0;
}
mv_mons();
if (++m_moves >= 120) {
m_moves = 0;
wanderer();
}
if (halluc) {
if (!(--halluc)) {
unhallucinate();
} else {
hallucinate();
}
}
if (blind) {
if (!(--blind)) {
unblind();
}
}
if (confused) {
if (!(--confused)) {
unconfuse();
}
}
if (bear_trap) {
bear_trap--;
}
if (levitate) {
if (!(--levitate)) {
messagef(1, "you float gently to the ground");
if (dungeon[rogue.row][rogue.col] & TRAP) {
trap_player(rogue.row, rogue.col);
}
}
}
if (haste_self) {
if (!(--haste_self)) {
messagef(0, "you feel yourself slowing down");
}
}
heal();
if (auto_search > 0) {
search(auto_search, auto_search);
}
return(fainted);
}
void
rest(int count)
{
int i;
interrupted = 0;
for (i = 0; i < count; i++) {
if (interrupted) {
break;
}
(void)reg_move();
}
}
char
gr_dir(void)
{
short d;
d = get_rand(1, 8);
switch(d) {
case 1:
d = 'j';
break;
case 2:
d = 'k';
break;
case 3:
d = 'l';
break;
case 4:
d = 'h';
break;
case 5:
d = 'y';
break;
case 6:
d = 'u';
break;
case 7:
d = 'b';
break;
case 8:
d = 'n';
break;
}
return(d);
}
void
heal(void)
{
static short heal_exp = -1, n, c = 0;
static boolean alt;
if (rogue.hp_current == rogue.hp_max) {
c = 0;
return;
}
if (rogue.exp != heal_exp) {
heal_exp = rogue.exp;
switch(heal_exp) {
case 1:
n = 20;
break;
case 2:
n = 18;
break;
case 3:
n = 17;
break;
case 4:
n = 14;
break;
case 5:
n = 13;
break;
case 6:
n = 10;
break;
case 7:
n = 9;
break;
case 8:
n = 8;
break;
case 9:
n = 7;
break;
case 10:
n = 4;
break;
case 11:
n = 3;
break;
case 12:
default:
n = 2;
}
}
if (++c >= n) {
c = 0;
rogue.hp_current++;
if ((alt = !alt) != 0) {
rogue.hp_current++;
}
if ((rogue.hp_current += regeneration) > rogue.hp_max) {
rogue.hp_current = rogue.hp_max;
}
print_stats(STAT_HP);
}
}
boolean
can_turn(short nrow, short ncol)
{
if ((dungeon[nrow][ncol] & TUNNEL) && is_passable(nrow, ncol)) {
return(1);
}
return(0);
}
void
turn_passage(short dir, boolean fast)
{
short crow = rogue.row, ccol = rogue.col, turns = 0;
short ndir = 0;
if ((dir != 'h') && can_turn(crow, ccol + 1)) {
turns++;
ndir = 'l';
}
if ((dir != 'l') && can_turn(crow, ccol - 1)) {
turns++;
ndir = 'h';
}
if ((dir != 'k') && can_turn(crow + 1, ccol)) {
turns++;
ndir = 'j';
}
if ((dir != 'j') && can_turn(crow - 1, ccol)) {
turns++;
ndir = 'k';
}
if (turns == 1) {
multiple_move_rogue(ndir - (fast ? 32 : 96));
}
}