/*      $NetBSD: hack.cmd.c,v 1.12 2011/08/06 20:42:43 dholland Exp $   */

/*
 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
 * Amsterdam
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * - 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.
 *
 * - Neither the name of the Stichting Centrum voor Wiskunde en
 * Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
 * 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.
 */

/*
 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
 * All rights reserved.
 *
 * 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. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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
__RCSID("$NetBSD: hack.cmd.c,v 1.12 2011/08/06 20:42:43 dholland Exp $");
#endif                          /* not lint */

#include        "hack.h"
#include        "extern.h"
#include        "def.func_tab.h"

static int doextcmd(void);

static const struct func_tab cmdlist[] = {
        { '\020', doredotopl },
        { '\022', doredraw },
        { '\024', dotele },
#ifdef SUSPEND
        { '\032', dosuspend },
#endif  /* SUSPEND */
        { 'a', doapply },
        /* 'A' : UNUSED */
        /* 'b', 'B' : go sw */
        { 'c', ddocall },
        { 'C', do_mname },
        { 'd', dodrop },
        { 'D', doddrop },
        { 'e', doeat },
        { 'E', doengrave },
        /* 'f', 'F' : multiple go (might become 'fight') */
        /* 'g', 'G' : UNUSED */
        /* 'h', 'H' : go west */
        { 'I', dotypeinv },             /* Robert Viduya */
        { 'i', ddoinv },
        /* 'j', 'J', 'k', 'K', 'l', 'L', 'm', 'M', 'n', 'N' : move commands */
        /* 'o', doopen,  */
        { 'O', doset },
        { 'p', dopay },
        { 'P', dowearring },
        { 'q', dodrink },
        { 'Q', dodone },
        { 'r', doread },
        { 'R', doremring },
        { 's', dosearch },
        { 'S', dosave },
        { 't', dothrow },
        { 'T', doremarm },
        /* 'u', 'U' : go ne */
        { 'v', doversion },
        /* 'V' : UNUSED */
        { 'w', dowield },
        { 'W', doweararm },
        /* 'x', 'X' : UNUSED */
        /* 'y', 'Y' : go nw */
        { 'z', dozap },
        /* 'Z' : UNUSED */
        { '<', doup },
        { '>', dodown },
        { '/', dowhatis },
        { '?', dohelp },
#ifdef SHELL
        { '!', dosh },
#endif  /* SHELL */
        { '.', donull },
        { ' ', donull },
        { ',', dopickup },
        { ':', dolook },
        { '^', doidtrap },
        { '\\', dodiscovered }, /* Robert Viduya */
        { WEAPON_SYM, doprwep },
        { ARMOR_SYM, doprarm },
        { RING_SYM, doprring },
        { '$', doprgold },
        { '#', doextcmd },
        { 0, 0 }
};

static const struct ext_func_tab extcmdlist[] = {
        { "dip", dodip },
        { "pray", dopray },
        { NULL, donull }
};

static char lowc(int);
static char unctrl(int);

void
rhack(const char *cmd)
{
        const struct func_tab *tlist = cmdlist;
        boolean         firsttime = FALSE;
        int res;

        if (!cmd) {
                firsttime = TRUE;
                flags.nopick = 0;
                cmd = parse();
        }
        if (!*cmd || (*cmd & 0377) == 0377 ||
            (flags.no_rest_on_space && *cmd == ' ')) {
                sound_bell();
                flags.move = 0;
                return;         /* probably we just had an interrupt */
        }
        if (movecmd(*cmd)) {
walk:
                if (multi)
                        flags.mv = 1;
                domove();
                return;
        }
        if (movecmd(lowc(*cmd))) {
                flags.run = 1;
rush:
                if (firsttime) {
                        if (!multi)
                                multi = COLNO;
                        u.last_str_turn = 0;
                }
                flags.mv = 1;
#ifdef QUEST
                if (flags.run >= 4)
                        finddir();
                if (firsttime) {
                        u.ux0 = u.ux + u.dx;
                        u.uy0 = u.uy + u.dy;
                }
#endif  /* QUEST */
                domove();
                return;
        }
        if ((*cmd == 'f' && movecmd(cmd[1])) || movecmd(unctrl(*cmd))) {
                flags.run = 2;
                goto rush;
        }
        if (*cmd == 'F' && movecmd(lowc(cmd[1]))) {
                flags.run = 3;
                goto rush;
        }
        if (*cmd == 'm' && movecmd(cmd[1])) {
                flags.run = 0;
                flags.nopick = 1;
                goto walk;
        }
        if (*cmd == 'M' && movecmd(lowc(cmd[1]))) {
                flags.run = 1;
                flags.nopick = 1;
                goto rush;
        }
#ifdef QUEST
        if (*cmd == cmd[1] && (*cmd == 'f' || *cmd == 'F')) {
                flags.run = 4;
                if (*cmd == 'F')
                        flags.run += 2;
                if (cmd[2] == '-')
                        flags.run += 1;
                goto rush;
        }
#endif  /* QUEST */
        while (tlist->f_char) {
                if (*cmd == tlist->f_char) {
                        res = (*(tlist->f_funct)) ();
                        if (!res) {
                                flags.move = 0;
                                multi = 0;
                        }
                        return;
                }
                tlist++;
        }
        {
                char            expcmd[10];
                char  *cp = expcmd;
                while (*cmd && cp - expcmd < (int)sizeof(expcmd) - 2) {
                        if (*cmd >= 040 && *cmd < 0177)
                                *cp++ = *cmd++;
                        else {
                                *cp++ = '^';
                                *cp++ = *cmd++ ^ 0100;
                        }
                }
                *cp++ = 0;
                pline("Unknown command '%s'.", expcmd);
        }
        multi = flags.move = 0;
}

static int
doextcmd(void)
{                               /* here after # - now read a full-word
                                 * command */
        char            buf[BUFSZ];
        const struct ext_func_tab *efp = extcmdlist;

        pline("# ");
        getlin(buf);
        clrlin();
        if (buf[0] == '\033')
                return (0);
        while (efp->ef_txt) {
                if (!strcmp(efp->ef_txt, buf))
                        return ((*(efp->ef_funct)) ());
                efp++;
        }
        pline("%s: unknown command.", buf);
        return (0);
}

static char
lowc(int sym)
{
        return ((sym >= 'A' && sym <= 'Z') ? sym + 'a' - 'A' : sym);
}

static char
unctrl(int sym)
{
        return ((sym >= ('A' & 037) && sym <= ('Z' & 037)) ? sym + 0140 : sym);
}

/* 'rogue'-like direction commands */
char            sdir[] = "hykulnjb><";
schar           xdir[10] = {-1, -1, 0, 1, 1, 1, 0, -1, 0, 0};
schar           ydir[10] = {0, -1, -1, -1, 0, 1, 1, 1, 0, 0};
static schar    zdir[10] = {0, 0, 0, 0, 0, 0, 0, 0, 1, -1};

int
movecmd(int sym)                /* also sets u.dz, but returns false for <> */
{
        char  *dp;

        u.dz = 0;
        if (!(dp = strchr(sdir, sym)))
                return (0);
        u.dx = xdir[dp - sdir];
        u.dy = ydir[dp - sdir];
        u.dz = zdir[dp - sdir];
        return (!u.dz);
}

int
getdir(boolean s)
{
        char            dirsym;

        if (s)
                pline("In what direction?");
        dirsym = readchar();
        if (!movecmd(dirsym) && !u.dz) {
                if (!strchr(quitchars, dirsym))
                        pline("What a strange direction!");
                return (0);
        }
        if (Confusion && !u.dz)
                confdir();
        return (1);
}

void
confdir(void)
{
        int x = rn2(8);
        u.dx = xdir[x];
        u.dy = ydir[x];
}

#ifdef QUEST
int
finddir(void)
{
        int    i, ui = u.di;
        for (i = 0; i <= 8; i++) {
                if (flags.run & 1)
                        ui++;
                else
                        ui += 7;
                ui %= 8;
                if (i == 8) {
                        pline("Not near a wall.");
                        flags.move = multi = 0;
                        return (0);
                }
                if (!isroom(u.ux + xdir[ui], u.uy + ydir[ui]))
                        break;
        }
        for (i = 0; i <= 8; i++) {
                if (flags.run & 1)
                        ui += 7;
                else
                        ui++;
                ui %= 8;
                if (i == 8) {
                        pline("Not near a room.");
                        flags.move = multi = 0;
                        return (0);
                }
                if (isroom(u.ux + xdir[ui], u.uy + ydir[ui]))
                        break;
        }
        u.di = ui;
        u.dx = xdir[ui];
        u.dy = ydir[ui];
        return 0;
}

int
isroom(int x, int y)
{                               /* what about POOL? */
        return (isok(x, y) && (levl[x][y].typ == ROOM ||
                               (levl[x][y].typ >= LDOOR && flags.run >= 6)));
}
#endif  /* QUEST */

int
isok(int x, int y)
{
        /* x corresponds to curx, so x==1 is the first column. Ach. %% */
        return (x >= 1 && x <= COLNO - 1 && y >= 0 && y <= ROWNO - 1);
}