/*	$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);
}
