view srogue/rings.c @ 215:1b73a8641b37

rogue4: fix most GCC5 warnings. Converting all function definitions to ANSI style accounts for most of the change. This has exposed other problems, such as daemons not actually being their stated type, that will require more careful solutions.
author John "Elwin" Edwards
date Wed, 27 Jan 2016 19:41:05 -0500
parents 3aa87373c908
children 94a0d9dd5ce1
line wrap: on
line source

/*
 * routines dealing specifically with rings
 *
 * @(#)rings.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"

/*
 * ring_on:
 *	Put on a ring
 */
ring_on()
{
	reg struct object *obj;
	reg struct linked_list *item;
	reg int ring, wh;
	char buf[LINLEN];
	bool okring;

	if (cur_ring[LEFT] != NULL && cur_ring[RIGHT] != NULL) {
		msg("Already wearing two rings.");
		after = FALSE;
		return;
	}
	/*
	 * Make certain that it is somethings that we want to wear
	 */
	if ((item = get_item("put on", RING)) == NULL)
		return;
	obj = OBJPTR(item);
	if (obj->o_type != RING) {
		msg("That won't fit on your finger.");
		return;
	}
	/*
	 * find out which hand to put it on
	 */
	if (is_current(obj))
		return;
	if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL) {
		if ((ring = gethand(FALSE)) < 0)
			return;
	}
	else if (cur_ring[LEFT] == NULL)
		ring = LEFT;
	else
		ring = RIGHT;
	cur_ring[ring] = obj;
	wh = obj->o_which;
	/*
	 * okring = FALSE when:
	 * 1) ring is cursed and benefit = plus
	 * 2) ring is blessed and benefit = minus
	 */
	okring = !((obj->o_ac > 0 && o_on(obj, ISCURSED)) ||
	          (obj->o_ac < 0 && o_on(obj, ISBLESS)));
	/*
	 * Calculate the effect it has on the poor guy (if possible).
	 */
	if (okring) {
		switch (wh) {
			case R_SPEED:
				if (--obj->o_ac < 0) {
					obj->o_ac = 0;
					setoflg(obj,ISCURSED);
				}
				else {
					add_haste(FALSE);
					msg("You find yourself moving must faster.");
				}
			when R_GIANT:				/* to 24 */
				him->s_ef.a_str = MAXSTR;
			when R_ADDSTR:
				chg_abil(STR,obj->o_ac,FROMRING);
			when R_KNOW:
				chg_abil(WIS,obj->o_ac,FROMRING);
			when R_DEX:
				chg_abil(DEX,obj->o_ac,FROMRING);
			when R_CONST:
				chg_abil(CON,obj->o_ac,FROMRING);
			when R_SEEINVIS:
				player.t_flags |= CANSEE;
				light(&hero);
				mvwaddch(cw, hero.y, hero.x, PLAYER);
			when R_AGGR:
				aggravate();
			when R_HEAVY:
				updpack();			/* new pack weight */
			when R_BLIND:
				r_know[R_BLIND] = TRUE;
				player.t_flags |= ISBLIND;
				look(FALSE);
			when R_SLOW:
				player.t_flags |= ISSLOW;
			when R_SAPEM:
				fuse(sapem,TRUE,150);
			when R_LIGHT: {
				struct room *rop;

				r_know[R_LIGHT] = TRUE;
				if ((rop = player.t_room) != NULL) {
					rop->r_flags &= ~ISDARK;
					light(&hero);
					mvwaddch(cw, hero.y, hero.x, PLAYER);
				}
			}
		}
	}
	if (r_know[wh] && r_guess[wh]) {
		free(r_guess[wh]);
		r_guess[wh] = NULL;
	}
	else if(!r_know[wh] && r_guess[wh] == NULL) {
		mpos = 0;
		strcpy(buf, r_stones[wh]);
		msg(callit);
		if (get_str(buf, cw) == NORM) {
			r_guess[wh] = new(strlen(buf) + 1);
			strcpy(r_guess[wh], buf);
		}
	}
	mpos = 0;
	msg("Now wearing %s",inv_name(obj,TRUE));
	ringfood = ring_eat();
	nochange = FALSE;
}


/*
 * ring_off:
 *	Take off some ring
 */
ring_off()
{
	reg int ring;
	reg struct object *obj;
	
	if (cur_ring[LEFT] == NULL && cur_ring[RIGHT] == NULL) {
		msg("You're not wearing any rings.");
		return;
	}
	else if (cur_ring[LEFT] == NULL)
		ring = RIGHT;
	else if (cur_ring[RIGHT] == NULL)
		ring = LEFT;
	else
		if ((ring = gethand(TRUE)) < 0)
			return;
	mpos = 0;
	obj = cur_ring[ring];
	if (obj == NULL) {
		msg("Not wearing such a ring.");
		return;
	}
	if (dropcheck(obj)) {
		msg("Was wearing %s", inv_name(obj, TRUE));
		nochange = FALSE;
		ringfood = ring_eat();
	}
}


/*
 * toss_ring:
 *	Remove a ring and stop its effects
 */
toss_ring(what)
struct object *what;
{
	bool okring;

	/*
	 * okring = FALSE when:
	 * 1) ring is cursed and benefit = plus
	 * 2) ring is blessed and benefit = minus
	 */
	okring = !((what->o_ac > 0 && o_on(what, ISCURSED)) ||
	          (what->o_ac < 0 && o_on(what, ISBLESS)));

	cur_ring[what == cur_ring[LEFT] ? LEFT : RIGHT] = NULL;
	if (okring) {
		switch (what->o_which) {
			case R_SPEED:
				extinguish(nohaste);
				nohaste(FALSE);
			when R_BLIND:
				sight(FALSE);
			when R_SLOW:
				player.t_flags &= ~ISSLOW;
			when R_SAPEM:
				extinguish(sapem);
			when R_GIANT:
				him->s_ef = him->s_re;
				ringabil();
			when R_ADDSTR:
				chg_abil(STR,-what->o_ac,FALSE);
			when R_KNOW:
				chg_abil(WIS,-what->o_ac,FALSE);
			when R_DEX:
				chg_abil(DEX,-what->o_ac,FALSE);
			when R_CONST:
				chg_abil(CON,-what->o_ac,FALSE);
			when R_SEEINVIS:
				player.t_flags &= ~CANSEE;
				extinguish(unsee);
				light(&hero);
				mvwaddch(cw, hero.y, hero.x, PLAYER);
		}
	}
}


/*
 * gethand:
 *	Get a hand to wear a ring
 */
gethand(isrmv)
bool isrmv;
{
	reg int c;
	char *ptr;
	struct object *obj;

	while(1) {
		addmsg("Left or Right ring");
		if (isrmv)
			addmsg(starlist);
		addmsg("? ");
		endmsg();
		c = readchar();
		if (isupper(c))
			c = tolower(c);
		if (c == '*' && isrmv) {
			wclear(hw);
			obj = cur_ring[LEFT];
			if (obj != NULL)
				ptr = inv_name(obj, TRUE);
			else
				ptr = "none";
			wprintw(hw, "L)  %s\n\r",ptr);
			obj = cur_ring[RIGHT];
			if (obj != NULL)
				ptr = inv_name(obj, TRUE);
			else
				ptr = "none";
			wprintw(hw, "R)  %s\n\r", ptr);
			wprintw(hw, "\n\r\nWhich hand? ");
			draw(hw);
			c = readchar();
			if (isupper(c))
				c = tolower(c);
			restscr(cw);
		}
		if (c == 'l')
			return LEFT;
		else if (c == 'r')
			return RIGHT;
		else if (c == ESCAPE)
			return -1;
		mpos = 0;
		msg("L or R");
	}
}

/*
 * ring_eat:
 *	How much food do the hero's rings use up?
 */
ring_eat()
{
	reg struct object *lb;
	reg int hand, i, howmuch;
	bool addit;

	howmuch = 0;
	addit = TRUE;
	for (i = LEFT; i <= RIGHT ; i += 1) {
		lb = cur_ring[i];
		if (lb != NULL) {
			switch (lb->o_which) {
				case R_REGEN:
				case R_GIANT:
					howmuch += 2;
				when R_SPEED:
				case R_SUSTSTR:
				case R_SUSAB:
					howmuch += 1;
				when R_SEARCH:
					howmuch += (rnd(100) < 33);
				when R_DIGEST:
					switch(lb->o_ac) {
						case -3: if (rnd(100) < 25)
									howmuch += 3;
						when -2: if (rnd(100) < 50)
									howmuch += 2;
						when -1: howmuch += 1;
						when  0: howmuch -= (rnd(100) < 50);
						when  3: if (rnd(100) < 25)
									howmuch -= 3;
						when  2: if (rnd(100) < 50)
									howmuch -= 2;
						default: howmuch -= 1;
					}
				otherwise:
					addit = FALSE;
			}
			if (addit) {
				if (o_on(lb, ISBLESS))
					howmuch -= 1;
				else if (o_on(lb, ISCURSED))
					howmuch += 1;
			}
		}
	}
	return howmuch;
}


/*
 * ring_num:
 *	Print ring bonuses
 */
char *
ring_num(what)
struct object *what;
{
	static char number[5];

	number[0] = '\0';
	if (o_on(what,ISKNOW) || o_on(what,ISPOST)) {
		if (magring(what)) {	/* only rings with numbers */
			number[0] = ' ';
			strcpy(&number[1], num(what->o_ac, 0));
		}
	}
	return number;
}


/*
 * magring:
 *	Returns TRUE if a ring has a number, i.e. +2
 */
magring(what)
struct object *what;
{
	switch(what->o_which) {
		case R_SPEED:
		case R_ADDSTR:
		case R_PROTECT:
		case R_ADDHIT:
		case R_ADDDAM:
		case R_DIGEST:
		case R_CONST:
		case R_KNOW:
		case R_DEX:
			return TRUE;
		default:
			return FALSE;
	}
}


/*
 * ringabil:
 *	Compute effective abilities due to rings
 */
ringabil()
{
	reg struct object *rptr;
	reg int i;

	for(i = LEFT; i <= RIGHT; i++) {
		rptr = cur_ring[i];
		if (rptr != NULL) {
			switch(rptr->o_which) {
				case R_ADDSTR:
					chg_abil(STR,rptr->o_ac,FROMRING);
				when R_DEX: 
					chg_abil(DEX,rptr->o_ac,FROMRING);
				when R_KNOW:
					chg_abil(WIS,rptr->o_ac,FROMRING);
				when R_CONST:
					chg_abil(CON,rptr->o_ac,FROMRING);
			}
		}
	}
}


/*
 * init_ring:
 *	Initialize a ring
 */
init_ring(what,fromwiz)
struct object *what;
bool fromwiz;			/* TRUE when from wizards */
{
	reg int much;

	switch (what->o_which) {
		case R_DIGEST:		/* -3 to +3 rings */
		case R_ADDSTR:
		case R_PROTECT:
		case R_ADDHIT:
		case R_ADDDAM:
		case R_DEX:
		case R_KNOW:
		case R_CONST:
			if (fromwiz) {
				much = getbless();		/* get wizards response */
			}
			else {						/* normal users */
				if (rnd(100) < 25)
					much = -rnd(3) - 1;
				else
					much = rnd(3) + 1;
			}
			what->o_ac = much;
			if (much < 0)
				setoflg(what,ISCURSED);
		when R_SPEED:
			what->o_ac = rnd(4) + 1;
		when R_AGGR:
		case R_DELUS:
		case R_HEAVY:
		case R_BLIND:
		case R_SLOW:
		case R_SAPEM:
		case R_TELEPORT:
			what->o_ac = 0;
			setoflg(what,ISCURSED);	
		when R_GIANT:
			what->o_ac = 25;		/* lots !! of STR */
		otherwise:
			what->o_ac = 1;
	}
	what->o_type = RING;
	what->o_weight = things[TYP_RING].mi_wght;
	what->o_typname = things[TYP_RING].mi_name;
	what->o_vol = itemvol(what);
}

/*
 * ringex:
 *	Get extra gains from rings
 */
ringex(rtype)
int rtype;
{
	reg int howmuch = 0;

	if (isring(LEFT, rtype))
		howmuch += cur_ring[LEFT]->o_ac;
	if (isring(RIGHT, rtype))
		howmuch += cur_ring[RIGHT]->o_ac;
	return howmuch;
}

/*
 * iswearing:
 *	Returns TRUE when the hero is wearing a certain type of ring
 */
iswearing(ring)
int ring;
{
	return (isring(LEFT,ring) || isring(RIGHT,ring));
}

/*
 * isring:
 *	Returns TRUE if a ring is on a hand
 */
isring(hand,ring)
int hand, ring;
{
	if (cur_ring[hand] != NULL && cur_ring[hand]->o_which == ring)
		return TRUE;
	return FALSE;
}