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annotate arogue5/list.c @ 155:1af259ac4ed2

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arogue7, xrogue: fix save/restore of alchemy jugs. state.c now saves the fuse that refills alchemy jugs, using the method of numbering objects previously applied to Advanced Rogue 5. Alchemy jugs that are empty when the game is saved will continue to function after it is restored. Savefile compatibility should not be affected.
author John "Elwin" Edwards
date Fri, 29 May 2015 17:34:04 -0400
parents 0ed67132cf10
children 56e748983fa8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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63
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1 /*
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2 * Functions for dealing with linked lists of goodies
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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6 * All rights reserved.
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7 *
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8 * Based on "Rogue: Exploring the Dungeons of Doom"
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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10 * All rights reserved.
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11 *
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12 * See the file LICENSE.TXT for full copyright and licensing information.
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13 */
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14
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15 #include <stdlib.h>
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16 #include "curses.h"
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17 #include "rogue.h"
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18
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19 /*
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20 * detach:
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21 * Takes an item out of whatever linked list it might be in
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22 */
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23
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24 _detach(list, item)
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25 register struct linked_list **list, *item;
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26 {
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27 if (*list == item)
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28 *list = next(item);
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29 if (prev(item) != NULL) item->l_prev->l_next = next(item);
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30 if (next(item) != NULL) item->l_next->l_prev = prev(item);
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31 item->l_next = NULL;
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32 item->l_prev = NULL;
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33 }
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34
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35 /*
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36 * _attach:
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37 * add an item to the head of a list
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38 */
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39
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40 _attach(list, item)
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41 register struct linked_list **list, *item;
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42 {
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43 if (*list != NULL)
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44 {
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45 item->l_next = *list;
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46 (*list)->l_prev = item;
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47 item->l_prev = NULL;
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48 }
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49 else
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50 {
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51 item->l_next = NULL;
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52 item->l_prev = NULL;
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53 }
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54
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55 *list = item;
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56 }
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57
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58 /*
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59 * o_free_list:
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60 * Throw the whole object list away
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61 */
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62
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63 _o_free_list(ptr)
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64 register struct linked_list **ptr;
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65 {
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66 register struct linked_list *item;
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67
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68 while (*ptr != NULL)
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69 {
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70 item = *ptr;
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71 *ptr = next(item);
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72 o_discard(item);
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73 }
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74 }
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75
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76 /*
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77 * o_discard:
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78 * free up an item and its object(and maybe contents)
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79 */
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80
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81 o_discard(item)
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82 register struct linked_list *item;
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83 {
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84 register struct object *obj;
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85 obj = OBJPTR(item);
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86 if (obj->contents != NULL)
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87 o_free_list(obj->contents);
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88 total -= 2;
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89 FREE(item->l_data);
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90 FREE(item);
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91 }
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92
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93 /*
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94 * t_free_list:
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95 * Throw the whole thing list away
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96 */
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97
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98 _t_free_list(ptr)
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99 register struct linked_list **ptr;
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100 {
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101 register struct linked_list *item;
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102
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103 while (*ptr != NULL)
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104 {
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105 item = *ptr;
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106 *ptr = next(item);
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