/*
 * Functions for dealing with potions
 *
 * @(#)potions.c	9.0	(rdk)	 7/17/84
 *
 * Super-Rogue
 * Copyright (C) 1984 Robert D. Kindelberger
 * All rights reserved.
 *
 * Based on "Rogue: Exploring the Dungeons of Doom"
 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
 * All rights reserved.
 *
 * See the file LICENSE.TXT for full copyright and licensing information.
 */

#include <stdlib.h>
#include <string.h>
#include "rogue.h"
#include "rogue.ext"

/*
 * quaff:
 *	Let the hero drink a potion
 */
void
quaff(void)
{
	reg struct object *obj;
	reg struct linked_list *item, *titem;
	reg struct thing *th;
	reg int wh;
	char buf[LINLEN];
	bool bless, curse;

	/*
	 * Make certain that it is somethings that we want to drink
	 */
	if ((item = get_item("quaff", POTION)) == NULL)
		return;
	obj = OBJPTR(item);
	if (obj->o_type != POTION) {
		msg("That's undrinkable!");
		after = FALSE;
		return;
	}
	wh = obj->o_which;
	bless = o_on(obj, ISBLESS);
	curse = o_on(obj, ISCURSED);
	del_pack(item);		/* get rid of it */

	/*
	 * Calculate the effect it has on the poor guy.
	 */
	switch(wh) {
	case P_CONFUSE:
		if (!bless) {
			if (pl_on(ISINVINC))
				msg("You remain level-headed.");
			else {
				chg_abil(WIS,-1,TRUE);		/* confuse his mind */
				if (pl_off(ISHUH)) {
					msg("Wait, what's going on here. Huh? What? Who?");
					if (pl_on(ISHUH))
						lengthen(unconfuse,rnd(8)+HUHDURATION);
					else
						fuse(unconfuse,TRUE,rnd(8)+HUHDURATION);
					player.t_flags |= ISHUH;
				}
			}
			p_know[P_CONFUSE] = TRUE;
		}
	when P_POISON:
		if (!bless) {
			if (pl_off(ISINVINC) && !iswearing(R_SUSTSTR) &&
			  !iswearing(R_SUSAB)) {
				chg_abil(CON,-1,TRUE);		
				chg_abil(STR,-(rnd(3)+1),TRUE);
				msg("You feel very sick now.");
			}
			else
				msg("You feel momentarily sick.");
			p_know[P_POISON] = TRUE;
		}
	when P_HEALING:
		if (!curse) {
			heal_self(4, TRUE);
			msg("You begin to feel better.");
			if (!iswearing(R_SLOW))
				notslow(FALSE);
			sight(FALSE);
			p_know[P_HEALING] = TRUE;
		}
	when P_STRENGTH:
		if (!curse) {
			msg("You feel stronger, now.  What bulging muscles!");
			chg_abil(STR,1,TRUE);
			p_know[P_STRENGTH] = TRUE;
		}
	when P_MFIND:
		/*
		 * Potion of monster detection - find all monsters
		 */
		if (mlist != NULL && !curse) {
			dispmons();
			mpos = 0;
			msg("You begin to sense the presence of monsters--More--");
			p_know[P_MFIND] = TRUE;
			wait_for(cw,' ');
			msg("");		/* clear line */
		}
		else
			msg("You have a strange feeling for a moment, then it passes.");
	when P_TFIND:
		/*
		 * Potion of magic detection.  Show the potions and scrolls
		 */
		if (lvl_obj != NULL && !curse) {
			struct linked_list *mobj;
			struct object *tp;
			bool show;

			show = FALSE;
			wclear(hw);
			for (mobj = lvl_obj; mobj != NULL; mobj = next(mobj)) {
				tp = OBJPTR(mobj);
				if (is_magic(tp)) {
					show = TRUE;
					mvwaddch(hw, tp->o_pos.y, tp->o_pos.x, MAGIC);
				}
			}
			for(titem = mlist; titem != NULL; titem = next(titem)) {
				reg struct linked_list *pitem;

				th = THINGPTR(titem);
				for(pitem=th->t_pack;pitem!=NULL;pitem=next(pitem)) {
					if (is_magic(ldata(pitem))) {
						show = TRUE;
						mvwaddch(hw,th->t_pos.y, th->t_pos.x, MAGIC);
					}
				}
			}
			if (show) {
				msg("You begin to sense the presence of magic.");
				overlay(hw,cw);
				p_know[P_TFIND] = TRUE;
				break;
			}
		}
		msg("You have a strange feeling for a moment, then it passes.");
	when P_PARALYZE:
		if (!bless) {
			if (pl_on(ISINVINC))
				msg("You feel numb for a moment.");
			else {
				msg("You can't move.");
				player.t_nocmd = HOLDTIME;
			}
			p_know[P_PARALYZE] = TRUE;
		}
	when P_SEEINVIS:
		if (!curse) {
			int invlen = roll(40,20);

			msg("This potion tastes like %s juice.", fruit);
			if (pl_off(CANSEE)) {
				player.t_flags |= CANSEE;
				fuse(unsee, TRUE, invlen);
				light(&hero);
			}
			else
				lengthen(unsee, invlen);
			sight(FALSE);
		}
	when P_RAISE:
		if (!curse) {
			msg("You suddenly feel much more skillful.");
			p_know[P_RAISE] = TRUE;
			chg_abil(DEX,1,TRUE);
			chg_abil(WIS,1,TRUE);
			chg_abil(CON,1,TRUE);
			raise_level();
		}
	when P_XHEAL:
		if (!curse) {
			heal_self(8, TRUE);
			if (rnd(100) < 50)
				chg_abil(CON,1,TRUE);
			msg("You begin to feel much better.");
			p_know[P_XHEAL] = TRUE;
			if (!iswearing(R_SLOW))
				notslow(FALSE);
			unconfuse(FALSE);
			extinguish(unconfuse);
			sight(FALSE);
		}
	when P_HASTE:
		if (!curse) {
			add_haste(TRUE);
			p_know[P_HASTE] = TRUE;
		}
	when P_INVINC:
		if (!curse) {
			int time = rnd(400) + 350;

			msg("You feel invincible.");
			if (player.t_flags & ISINVINC)
				lengthen(notinvinc,time);
			else
				fuse(notinvinc,TRUE,time);
			player.t_flags |= ISINVINC;
			p_know[P_INVINC] = TRUE;
		}
	when P_SMART:
		if (!curse) {
			msg("You feel more perceptive.");
			p_know[P_SMART] = TRUE;
			chg_abil(WIS,1,TRUE);
		}
	when P_RESTORE:
		if (!curse) {
			msg("Hey, this tastes great. You feel warm all over.");
			him->s_re = max_stats.s_re;
			him->s_ef = max_stats.s_re;
			ringabil();				/* add in rings */
			updpack();				/* update weight */
			p_know[P_RESTORE] = TRUE;
			extinguish(rchg_str);	/* kill restore in from ulodyte */
		}
	when P_BLIND:
		if (!bless) {
			if (pl_on(ISINVINC))
				msg("The light dims for a moment.");
			else {
				chg_abil(WIS,-1,TRUE);
				msg("A cloak of darkness falls around you.");
				if (pl_off(ISBLIND)) {
					player.t_flags |= ISBLIND;
					fuse(sight, TRUE, rnd(400) + 450);
					light(&hero);
				}
			}
			p_know[P_BLIND] = TRUE;
		}
	when P_ETH:
		if (!curse) {
			int ethlen = roll(40,20);

			msg("You feel more vaporous.");
			if (pl_on(ISETHER))
				lengthen(noteth,ethlen);
			else
				fuse(noteth,TRUE,ethlen);
			player.t_flags |= ISETHER;
			p_know[P_ETH] = TRUE;
		}
	when P_NOP:
		msg("This potion tastes extremely dull.");
	when P_DEX:
		if (!curse) {
			chg_abil(DEX,1,TRUE);		/* increase dexterity */
			p_know[P_DEX] = TRUE;
			msg("You feel much more agile.");
		}
	when P_REGEN:
		if (!curse) {
			int reglen = rnd(450) + 450;

			if (pl_on(ISREGEN))
				lengthen(notregen, reglen);
			else
				fuse(notregen, TRUE, reglen);
			player.t_flags |= ISREGEN;
			msg("You feel yourself improved.");
			p_know[P_REGEN] = TRUE;
		}
	when P_DECREP:
	case P_SUPHERO: {
		int howmuch = rnd(3) + 1;

		if (wh == P_DECREP) {
			if (!bless) {
				if (iswearing(R_SUSAB) || pl_on(ISINVINC)) {
					msg("You feel momentarily woozy.");
					howmuch = 0;
				}
				else {
					msg("You feel crippled.");
					howmuch = -howmuch;
					if (!iswearing(R_SUSTSTR))
						chg_abil(STR,howmuch,TRUE);
				}
			}
			else
				howmuch = 0;
		}
		else {			/* potion of superhero */
			if (curse)
				howmuch = 0;
			msg("You feel invigorated.");
			chg_abil(STR,howmuch,TRUE);
		}
		chg_abil(CON,howmuch,TRUE);
		chg_abil(DEX,howmuch,TRUE);
		chg_abil(WIS,howmuch,TRUE);		/* change abilities */
		p_know[wh] = TRUE;
	}
	otherwise:
		msg("What an odd tasting potion!");
		return;
	}
	nochange = FALSE;
	if (p_know[wh] && p_guess[wh]) {
		free(p_guess[wh]);
		p_guess[wh] = NULL;
	}
	else if(!p_know[wh] && p_guess[wh] == NULL) {
		strcpy(buf, p_colors[wh]);
		msg(callit);
		if (get_str(buf, cw) == NORM) {
			p_guess[wh] = new(strlen(buf) + 1);
			strcpy(p_guess[wh], buf);
		}
	}
}