/*      $NetBSD: init.c,v 1.18 2008/08/08 16:10:47 drochner 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[] = "@(#)init.c      8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: init.c,v 1.18 2008/08/08 16:10:47 drochner Exp $");
#endif
#endif /* not lint */

/*
* init.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 <stdlib.h>
#include <fcntl.h>

#include "rogue.h"

static void do_args(int, char **);
static void do_opts(void);
static void env_get_value(char **, char *, boolean);
static void init_str(char **, const char *);
static void player_init(void);

static char *rest_file = NULL;
static boolean init_curses = 0;

char login_name[MAX_OPT_LEN];
char *nick_name = NULL;
boolean cant_int = 0;
boolean did_int = 0;
boolean score_only;
boolean save_is_interactive = 1;
boolean ask_quit = 1;
boolean no_skull = 0;
boolean passgo = 0;
const char *error_file = "rogue.esave";
const char *byebye_string = "Okay, bye bye!";
gid_t gid, egid;

int
init(int argc, char *argv[])
{
       const char *pn;
       int seed;
       int fd;

       gid = getgid();
       egid = getegid();
       setegid(gid);
       /* Check for dirty tricks with closed fds 0, 1, 2 */
       fd = open("/dev/null", O_RDONLY);
       if (fd < 3)
               exit(1);
       close(fd);

       seed = 0;
       pn = md_gln();
       if ((!pn) || (strlen(pn) >= MAX_OPT_LEN)) {
               clean_up("Hey!  Who are you?");
       }
       /* LOGIN_NAME_SIZE == MAX_OPT_LEN now, but just in case... */
       (void)strlcpy(login_name, pn, sizeof(login_name));

       do_args(argc, argv);
       do_opts();

       if (!score_only && !rest_file) {
               printf("Hello %s, just a moment while I dig the dungeon...",
                       nick_name);
               fflush(stdout);
       }

       if (!initscr()) {
               fprintf(stderr, "couldn't initialize screen\n");
               exit (0);
       }
       if ((LINES < DROWS) || (COLS < DCOLS)) {
               clean_up("must be played on at least 80 x 24 screen");
       }
       start_window();
       init_curses = 1;

       md_heed_signals();

       if (score_only) {
               put_scores(NULL, 0);
       }
       seed = md_gseed();
       (void)srrandom(seed);
       if (rest_file) {
               restore(rest_file);
               return(1);
       }
       mix_colors();
       get_wand_and_ring_materials();
       make_scroll_titles();

       level_objects.next_object = NULL;
       level_monsters.next_monster = NULL;
       player_init();
       ring_stats(0);
       return(0);
}

static void
player_init(void)
{
       object *obj;

       rogue.pack.next_object = NULL;

       obj = alloc_object();
       get_food(obj, 1);
       (void)add_to_pack(obj, &rogue.pack, 1);

       obj = alloc_object();           /* initial armor */
       obj->what_is = ARMOR;
       obj->which_kind = RINGMAIL;
       obj->class = RINGMAIL+2;
       obj->is_protected = 0;
       obj->d_enchant = 1;
       (void)add_to_pack(obj, &rogue.pack, 1);
       do_wear(obj);

       obj = alloc_object();           /* initial weapons */
       obj->what_is = WEAPON;
       obj->which_kind = MACE;
       obj->damage = "2d3";
       obj->hit_enchant = obj->d_enchant = 1;
       obj->identified = 1;
       (void)add_to_pack(obj, &rogue.pack, 1);
       do_wield(obj);

       obj = alloc_object();
       obj->what_is = WEAPON;
       obj->which_kind = BOW;
       obj->damage = "1d2";
       obj->hit_enchant = 1;
       obj->d_enchant = 0;
       obj->identified = 1;
       (void)add_to_pack(obj, &rogue.pack, 1);

       obj = alloc_object();
       obj->what_is = WEAPON;
       obj->which_kind = ARROW;
       obj->quantity = get_rand(25, 35);
       obj->damage = "1d2";
       obj->hit_enchant = 0;
       obj->d_enchant = 0;
       obj->identified = 1;
       (void)add_to_pack(obj, &rogue.pack, 1);
}

void
clean_up(const char *estr)
{
       if (save_is_interactive) {
               if (init_curses) {
                       move(DROWS-1, 0);
                       refresh();
                       stop_window();
               }
               printf("\n%s\n", estr);
       }
       md_exit(0);
}

void
start_window(void)
{
       cbreak();
       noecho();
#ifndef BAD_NONL
       nonl();
#endif
}

void
stop_window(void)
{
       endwin();
}

void
byebye(int dummy __unused)
{
       md_ignore_signals();
       if (ask_quit) {
               quit(1);
       } else {
               clean_up(byebye_string);
       }
       md_heed_signals();
}

void
onintr(int dummy __unused)
{
       md_ignore_signals();
       if (cant_int) {
               did_int = 1;
       } else {
               check_message();
               messagef(1, "interrupt");
       }
       md_heed_signals();
}

void
error_save(int dummy __unused)
{
       save_is_interactive = 0;
       save_into_file(error_file);
       clean_up("");
}

static void
do_args(int argc, char *argv[])
{
       int i, j;

       for (i = 1; i < argc; i++) {
               if (argv[i][0] == '-') {
                       for (j = 1; argv[i][j]; j++) {
                               switch(argv[i][j]) {
                               case 's':
                                       score_only = 1;
                                       break;
                               }
                       }
               } else {
                       rest_file = argv[i];
               }
       }
}

static void
do_opts(void)
{
       char *eptr;

       if ((eptr = md_getenv("ROGUEOPTS")) != NULL) {
               for (;;) {
                       while ((*eptr) == ' ') {
                               eptr++;
                       }
                       if (!(*eptr)) {
                               break;
                       }
                       if (!strncmp(eptr, "fruit=", 6)) {
                               eptr += 6;
                               env_get_value(&fruit, eptr, 1);
                       } else if (!strncmp(eptr, "file=", 5)) {
                               eptr += 5;
                               env_get_value(&save_file, eptr, 0);
                       } else if (!strncmp(eptr, "jump", 4)) {
                               jump = 1;
                       } else if (!strncmp(eptr, "name=", 5)) {
                               eptr += 5;
                               env_get_value(&nick_name, eptr, 0);
                       } else if (!strncmp(eptr, "noaskquit", 9)) {
                               ask_quit = 0;
                       } else if (!strncmp(eptr, "noskull", 5) ||
                                       !strncmp(eptr,"notomb", 6)) {
                               no_skull = 1;
                       } else if (!strncmp(eptr, "passgo", 5)) {
                               passgo = 1;
                       }
                       while ((*eptr) && (*eptr != ',')) {
                               eptr++;
                       }
                       if (!(*(eptr++))) {
                               break;
                       }
               }
       }
       /* If some strings have not been set through ROGUEOPTS, assign defaults
        * to them so that the options editor has data to work with.
        */
       init_str(&nick_name, login_name);
       init_str(&save_file, "rogue.save");
       init_str(&fruit, "slime-mold");
}

static void
env_get_value(char **s, char *e, boolean add_blank)
{
       short i = 0;
       const char *t;

       t = e;

       while ((*e) && (*e != ',')) {
               if (*e == ':') {
                       *e = ';';               /* ':' reserved for score file purposes */
               }
               e++;
               if (++i >= MAX_OPT_LEN) {
                       break;
               }
       }
       /* note: edit_opts() in room.c depends on this being the right size */
       *s = md_malloc(MAX_OPT_LEN + 2);
       if (*s == NULL)
               clean_up("out of memory");
       (void)strncpy(*s, t, i);
       if (add_blank) {
               (*s)[i++] = ' ';
       }
       (*s)[i] = '\0';
}

static void
init_str(char **str, const char *dflt)
{
       if (!(*str)) {
               /* note: edit_opts() in room.c depends on this size */
               *str = md_malloc(MAX_OPT_LEN + 2);
               if (*str == NULL)
                       clean_up("out of memory");
               (void)strlcpy(*str, dflt, MAX_OPT_LEN + 2);
       }
}

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