/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.apply.c - version 1.0.3 */
/* $FreeBSD: src/games/hack/hack.apply.c,v 1.4.2.1 2001/02/18 02:20:07 kris Exp $ */
/* $DragonFly: src/games/hack/hack.apply.c,v 1.4 2006/08/21 19:45:32 pavalos Exp $ */

#include "hack.h"
#include "def.edog.h"
extern char quitchars[];

static void		 use_camera(struct obj *);
static bool		 in_ice_box(struct obj *);
static bool		 ck_ice_box(struct obj *);
static int		 out_ice_box(struct obj *);
static void		 use_ice_box(struct obj *);
static struct monst	*bchit(int, int, int, char);
static void		 use_whistle(struct obj *);
static void		 use_magic_whistle(struct obj *);
static bool		 dig(void);
static int		 use_pick_axe(struct obj *);

int
doapply(void)
{
	struct obj *obj;
	int res = 1;

	obj = getobj("(", "use or apply");
	if (!obj)
		return (0);

	switch (obj->otyp) {
	case EXPENSIVE_CAMERA:
		use_camera(obj);
		break;
	case ICE_BOX:
		use_ice_box(obj);
		break;
	case PICK_AXE:
		res = use_pick_axe(obj);
		break;

	case MAGIC_WHISTLE:
		if (pl_character[0] == 'W' || u.ulevel > 9) {
			use_magic_whistle(obj);
			break;
		}
		/* fall into next case */
	case WHISTLE:
		use_whistle(obj);
		break;

	case CAN_OPENER:
		if (!carrying(TIN)) {
			pline("You have no can to open.");
			goto xit;
		}
		pline("You cannot open a tin without eating its contents.");
		pline("In order to eat, use the 'e' command.");
		if (obj != uwep)
			pline("Opening the tin will be much easier if you wield the can-opener.");
		goto xit;

	default:
		pline("Sorry, I don't know how to use that.");
xit:
		nomul(0);
		return (0);
	}
	nomul(0);
	return (res);
}

static void
use_camera(struct obj *obj __unused)
{
	struct monst *mtmp;

	if (!getdir(1)) {	/* ask: in what direction? */
		flags.move = multi = 0;
		return;
	}
	if (u.uswallow) {
		pline("You take a picture of %s's stomach.", monnam(u.ustuck));
		return;
	}
	if (u.dz) {
		pline("You take a picture of the %s.",
		    (u.dz > 0) ? "floor" : "ceiling");
		return;
	}
	if ((mtmp = bchit(u.dx, u.dy, COLNO, '!')) != NULL) {
		if (mtmp->msleep) {
			mtmp->msleep = 0;
			pline("The flash awakens %s.", monnam(mtmp));	/* a3 */
		} else if (mtmp->data->mlet != 'y')
			if (mtmp->mcansee || mtmp->mblinded) {
				int tmp = dist(mtmp->mx, mtmp->my);
				int tmp2;
				if (cansee(mtmp->mx, mtmp->my))
					pline("%s is blinded by the flash!", Monnam(mtmp));
				setmangry(mtmp);
				if (tmp < 9 && !mtmp->isshk && rn2(4)) {
					mtmp->mflee = 1;
					if (rn2(4))
						mtmp->mfleetim = rnd(100);
				}
				if (tmp < 3)
					mtmp->mcansee = mtmp->mblinded = 0;
				else {
					tmp2 = mtmp->mblinded;
					tmp2 += rnd(1 + 50 / tmp);
					if (tmp2 > 127)
						tmp2 = 127;
					mtmp->mblinded = tmp2;
					mtmp->mcansee = 0;
				}
			}
	}
}

static
struct obj *current_ice_box;	/* a local variable of use_ice_box, to be
				used by its local procedures in/ck_ice_box */
static bool
in_ice_box(struct obj *obj)
{
	if (obj == current_ice_box ||
	    (Punished && (obj == uball || obj == uchain))) {
		pline("You must be kidding.");
		return (0);
	}
	if (obj->owornmask & (W_ARMOR | W_RING)) {
		pline("You cannot refrigerate something you are wearing.");
		return (0);
	}
	if (obj->owt + current_ice_box->owt > 70) {
		pline("It won't fit.");
		return (1);	/* be careful! */
	}
	if (obj == uwep) {
		if (uwep->cursed) {
			pline("Your weapon is welded to your hand!");
			return (0);
		}
		setuwep(NULL);
	}
	current_ice_box->owt += obj->owt;
	freeinv(obj);
	obj->o_cnt_id = current_ice_box->o_id;
	obj->nobj = fcobj;
	fcobj = obj;
	obj->age = moves - obj->age;	/* actual age */
	return (1);
}

static bool
ck_ice_box(struct obj *obj)
{
	return (obj->o_cnt_id == current_ice_box->o_id);
}

static int
out_ice_box(struct obj *obj)
{
	struct obj *otmp;

	if (obj == fcobj)
		fcobj = fcobj->nobj;
	else {
		for (otmp = fcobj; otmp->nobj != obj; otmp = otmp->nobj)
			if (!otmp->nobj)
				panic("out_ice_box");
		otmp->nobj = obj->nobj;
	}
	current_ice_box->owt -= obj->owt;
	obj->age = moves - obj->age;	/* simulated point of time */
	addinv(obj);
	return (0);
}

static void
use_ice_box(struct obj *obj)
{
	int cnt = 0;
	struct obj *otmp;

	current_ice_box = obj;	/* for use by in/out_ice_box */
	for (otmp = fcobj; otmp; otmp = otmp->nobj)
		if (otmp->o_cnt_id == obj->o_id)
			cnt++;
	if (!cnt)
		pline("Your ice-box is empty.");
	else {
		pline("Do you want to take something out of the ice-box? [yn] ");
		if (readchar() == 'y')
			if (askchain(fcobj, NULL, 0, out_ice_box, ck_ice_box, 0))
				return;
		pline("That was all. Do you wish to put something in? [yn] ");
		if (readchar() != 'y')
			return;
	}
	/* call getobj: 0: allow cnt; #: allow all types; %: expect food */
	otmp = getobj("0#%", "put in");
	if (!otmp || !in_ice_box(otmp))
		flags.move = multi = 0;
}

static
struct monst *
bchit(int ddx, int ddy, int range, char sym)
{
	struct monst *mtmp = NULL;
	int bchx = u.ux, bchy = u.uy;

	if (sym)
		Tmp_at(-1, sym);	/* open call */
	while (range--) {
		bchx += ddx;
		bchy += ddy;
		if ((mtmp = m_at(bchx, bchy)))
			break;
		if (!ZAP_POS(levl[bchx][bchy].typ)) {
			bchx -= ddx;
			bchy -= ddy;
			break;
		}
		if (sym)
			Tmp_at(bchx, bchy);
	}
	if (sym)
		Tmp_at(-1, -1);
	return (mtmp);
}

static void
use_whistle(struct obj *obj __unused)
{
	struct monst *mtmp = fmon;

	pline("You produce a high whistling sound.");
	while (mtmp) {
		if (dist(mtmp->mx, mtmp->my) < u.ulevel * 20) {
			if (mtmp->msleep)
				mtmp->msleep = 0;
			if (mtmp->mtame)
				EDOG(mtmp)->whistletime = moves;
		}
		mtmp = mtmp->nmon;
	}
}

static void
use_magic_whistle(struct obj *obj __unused)
{
	struct monst *mtmp = fmon;

	pline("You produce a strange whistling sound.");
	while (mtmp) {
		if (mtmp->mtame)
			mnexto(mtmp);
		mtmp = mtmp->nmon;
	}
}

static int dig_effort;	/* effort expended on current pos */
static uchar dig_level;
static coord dig_pos;
static boolean dig_down;

static
bool
dig(void)
{
	struct rm *lev;
	int dpx = dig_pos.x, dpy = dig_pos.y;

	/* perhaps a nymph stole his pick-axe while he was busy digging */
	/* or perhaps he teleported away */
	if (u.uswallow || !uwep || uwep->otyp != PICK_AXE ||
	    dig_level != dlevel ||
	    ((dig_down && (dpx != u.ux || dpy != u.uy)) ||
	     (!dig_down && dist(dpx, dpy) > 2)))
		return (0);

	dig_effort += 10 + abon() + uwep->spe + rn2(5);
	if (dig_down) {
		if (!xdnstair) {
			pline("The floor here seems too hard to dig in.");
			return (0);
		}
		if (dig_effort > 250) {
			dighole();
			return (0);	/* done with digging */
		}
		if (dig_effort > 50) {
			struct trap *ttmp = t_at(dpx, dpy);

			if (!ttmp) {
				ttmp = maketrap(dpx, dpy, PIT);
				ttmp->tseen = 1;
				pline("You have dug a pit.");
				u.utrap = rn1(4, 2);
				u.utraptype = TT_PIT;
				return (0);
			}
		}
	} else if (dig_effort > 100) {
		const char *digtxt;
		struct obj *obj;

		lev = &levl[dpx][dpy];
		if ((obj = sobj_at(ENORMOUS_ROCK, dpx, dpy)) != NULL) {
			fracture_rock(obj);
			digtxt = "The rock falls apart.";
		} else if (!lev->typ || lev->typ == SCORR) {
			lev->typ = CORR;
			digtxt = "You succeeded in cutting away some rock.";
		} else if (lev->typ == HWALL || lev->typ == VWALL
		    || lev->typ == SDOOR) {
			lev->typ = xdnstair ? DOOR : ROOM;
			digtxt = "You just made an opening in the wall.";
		} else
			digtxt = "Now what exactly was it that you were digging in?";
		mnewsym(dpx, dpy);
		prl(dpx, dpy);
		pline("%s", digtxt);	/* after mnewsym & prl */
		return (0);
	} else {
		if (IS_WALL(levl[dpx][dpy].typ)) {
			int rno = inroom(dpx, dpy);

			if (rno >= 0 && rooms[rno].rtype >= 8) {
				pline("This wall seems too hard to dig into.");
				return (0);
			}
		}
		pline("You hit the rock with all your might.");
	}
	return (1);
}

/* When will hole be finished? Very rough indication used by shopkeeper. */
int
holetime(void)
{
	return ((occupation == dig) ? (250 - dig_effort) / 20 : -1);
}

void
dighole(void)
{
	struct trap *ttmp = t_at(u.ux, u.uy);

	if (!xdnstair) {
		pline("The floor here seems too hard to dig in.");
	} else {
		if (ttmp)
			ttmp->ttyp = TRAPDOOR;
		else
			ttmp = maketrap(u.ux, u.uy, TRAPDOOR);
		ttmp->tseen = 1;
		pline("You've made a hole in the floor.");
		if (!u.ustuck) {
			if (inshop())
				shopdig(1);
			pline("You fall through ...");
			if (u.utraptype == TT_PIT) {
				u.utrap = 0;
				u.utraptype = 0;
			}
			goto_level(dlevel + 1, FALSE);
		}
	}
}

static int
use_pick_axe(struct obj *obj)
{
	char dirsyms[12];
	char *dsp = dirsyms, *sdp = sdir;
	struct monst *mtmp;
	struct rm *lev;
	int rx, ry, res = 0;

	if (obj != uwep) {
		if (uwep && uwep->cursed) {
			/* Andreas Bormann - ihnp4!decvax!mcvax!unido!ab */
			pline("Since your weapon is welded to your hand,");
			pline("you cannot use that pick-axe.");
			return (0);
		}
		pline("You now wield %s.", doname(obj));
		setuwep(obj);
		res = 1;
	}
	while (*sdp) {
		movecmd(*sdp);	/* sets u.dx and u.dy and u.dz */
		rx = u.ux + u.dx;
		ry = u.uy + u.dy;
		if (u.dz > 0 || (u.dz == 0 && isok(rx, ry) &&
		    (IS_ROCK(levl[rx][ry].typ)
		    || sobj_at(ENORMOUS_ROCK, rx, ry))))
			*dsp++ = *sdp;
		sdp++;
	}
	*dsp = 0;
	pline("In what direction do you want to dig? [%s] ", dirsyms);
	if (!getdir(0))		/* no txt */
		return (res);
	if (u.uswallow && attack(u.ustuck))	/* return(1) */
		;
	else if (u.dz < 0)
		pline("You cannot reach the ceiling.");
	else if (u.dz == 0) {
		if (Confusion)
			confdir();
		rx = u.ux + u.dx;
		ry = u.uy + u.dy;
		if ((mtmp = m_at(rx, ry)) && attack(mtmp))
			return (1);
		if (!isok(rx, ry)) {
			pline("Clash!");
			return (1);
		}
		lev = &levl[rx][ry];
		if (lev->typ == DOOR)
			pline("Your %s against the door.",
			    aobjnam(obj, "clang"));
		else if (!IS_ROCK(lev->typ)
		    && !sobj_at(ENORMOUS_ROCK, rx, ry)) {
			/* ACCESSIBLE or POOL */
			pline("You swing your %s through thin air.",
			    aobjnam(obj, NULL));
		} else {
			if (dig_pos.x != rx || dig_pos.y != ry
			    || dig_level != dlevel || dig_down) {
				dig_down = FALSE;
				dig_pos.x = rx;
				dig_pos.y = ry;
				dig_level = dlevel;
				dig_effort = 0;
				pline("You start digging.");
			} else
				pline("You continue digging.");
			occupation = dig;
			occtxt = "digging";
		}
	} else if (Levitation) {
		pline("You cannot reach the floor.");
	} else {
		if (dig_pos.x != u.ux || dig_pos.y != u.uy
		    || dig_level != dlevel || !dig_down) {
			dig_down = TRUE;
			dig_pos.x = u.ux;
			dig_pos.y = u.uy;
			dig_level = dlevel;
			dig_effort = 0;
			pline("You start digging in the floor.");
			if (inshop())
				shopdig(0);
		} else
			pline("You continue digging in the floor.");
		occupation = dig;
		occtxt = "digging";
	}
	return (1);
}