view arogue5/list.c @ 152:0c775afe0072

arogue7, xrogue: fix command repetition. In both games, command() loops and calls the action function twice for each command: once to schedule it by setting player.t_action and player.t_no_move, and again, to actually do it, once player.t_no_move has been reduced to 0. Each loop decremented count, so repeated commands were only repeated half the number of times the player typed. count is now decremented only when ch has been set to the repeated command.
author John "Elwin" Edwards
date Thu, 28 May 2015 11:08:03 -0400
parents 0ed67132cf10
children 56e748983fa8
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/*
 * Functions for dealing with linked lists of goodies
 *
 * Advanced Rogue
 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
 * 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 "curses.h"
#include "rogue.h"

/*
 * detach:
 *	Takes an item out of whatever linked list it might be in
 */

_detach(list, item)
register struct linked_list **list, *item;
{
    if (*list == item)
	*list = next(item);
    if (prev(item) != NULL) item->l_prev->l_next = next(item);
    if (next(item) != NULL) item->l_next->l_prev = prev(item);
    item->l_next = NULL;
    item->l_prev = NULL;
}

/*
 * _attach:
 *	add an item to the head of a list
 */

_attach(list, item)
register struct linked_list **list, *item;
{
    if (*list != NULL)
    {
	item->l_next = *list;
	(*list)->l_prev = item;
	item->l_prev = NULL;
    }
    else
    {
	item->l_next = NULL;
	item->l_prev = NULL;
    }

    *list = item;
}

/*
 * o_free_list:
 *	Throw the whole object list away
 */

_o_free_list(ptr)
register struct linked_list **ptr;
{
    register struct linked_list *item;

    while (*ptr != NULL)
    {
	item = *ptr;
	*ptr = next(item);
	o_discard(item);
    }
}

/*
 * o_discard:
 *	free up an item and its object(and maybe contents)
 */

o_discard(item)
register struct linked_list *item;
{
    register struct object *obj;
    obj = OBJPTR(item);
    if (obj->contents != NULL)
	o_free_list(obj->contents);
    total -= 2;
    FREE(item->l_data);
    FREE(item);
}

/*
 * t_free_list:
 *	Throw the whole thing list away
 */

_t_free_list(ptr)
register struct linked_list **ptr;
{
    register struct linked_list *item;

    while (*ptr != NULL)
    {
	item = *ptr;
	*ptr = next(item);
	t_discard(item);
    }
}

/*
 * t_discard:
 *	free up an item and its thing
 */

t_discard(item)
struct linked_list *item;
{
    total -= 2;
    FREE(item->l_data);
    FREE(item);
}

/*
 * destroy_item:
 *	get rid of an item structure -- don't worry about contents
 */

destroy_item(item)
register struct linked_list *item;
{
    total--;
    FREE(item);
}

/*
 * new_item
 *	get a new item with a specified size
 */

struct linked_list *
new_item(size)
int size;
{
    register struct linked_list *item;

    if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
	msg("Ran out of memory for header after %d items", total);
    if ((item->l_data = new(size)) == NULL)
	msg("Ran out of memory for data after %d items", total);
    item->l_next = item->l_prev = NULL;
    return item;
}

/*
 * creat_item:
 *	Create just an item structure -- don't make any contents
 */

struct linked_list *
creat_item()
{
    register struct linked_list *item;

    if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
	msg("Ran out of memory for header after %d items", total);
    item->l_next = item->l_prev = NULL;
    return item;
}

char *
new(size)
int size;
{
    register char *space = ALLOC(size);
    static char errbuf[LINELEN];

    if (space == NULL) {
	sprintf(errbuf,"Rogue ran out of memory (used = %d, wanted = %d).",
		md_memused(), size);
	fatal(errbuf);
    }
    total++;
    return space;
}