/*      $OpenBSD: hack.cmd.c,v 1.9 2016/01/09 18:33:15 mestre 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 <ctype.h>

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

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', done2 },
        { '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', NULL }
};

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

extern char quitchars[];

static char unctrl(char);

void
rhack(char *cmd)
{
        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 == ' ')){
                hackbell();
                flags.move = 0;
                return;         /* probably we just had an interrupt */
        }
        if(movecmd(*cmd)) {
        walk:
                if(multi) flags.mv = 1;
                domove();
                return;
        }
        if(movecmd(tolower((unsigned char)*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(tolower((unsigned char)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(tolower((unsigned char)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 < 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;
}

int
doextcmd(void)  /* here after # - now read a full-word command */
{
        char buf[BUFSZ];
        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
unctrl(char 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 };
schar zdir[10] = {  0, 0, 0, 0, 0, 0, 0, 0, 1,-1 };

int
movecmd(char 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
void
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;
                }
                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;
                }
                if(isroom(u.ux+xdir[ui], u.uy+ydir[ui]))
                        break;
        }
        u.di = ui;
        u.dx = xdir[ui];
        u.dy = ydir[ui];
}

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);
}