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annotate xrogue/list.c @ 306:057c5114e244

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Super-Rogue: fix some out-of-range constants. Constants K_ARROW etc., for causes of death other than monsters, are in the 240-255 range. They were often passed to functions taking char, which is usually signed, making the values out of range. The function declarations have been changed to unsigned char, which is also the type used by the scoreboard code.
author John "Elwin" Edwards
date Sat, 17 Apr 2021 15:41:12 -0400
parents 0250220d8cdd
children
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1 /*
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2 list.c - Functions for dealing with linked lists of goodies
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3
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4 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <stdlib.h>
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20 #include <string.h>
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21 #include <curses.h>
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22 #include "rogue.h"
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23
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24 void r_discard(struct linked_list *item);
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25 void t_discard(struct linked_list *item);
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26
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27 /*
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28 * detach:
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29 * Takes an item out of whatever linked list it might be in
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30 */
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31
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32 void
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33 _detach(struct linked_list **list, struct linked_list *item)
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34 {
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35 if (*list == item)
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36 *list = next(item);
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37 if (prev(item) != NULL) item->l_prev->l_next = next(item);
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38 if (next(item) != NULL) item->l_next->l_prev = prev(item);
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39 item->l_next = NULL;
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40 item->l_prev = NULL;
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41 }
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42
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43 /*
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44 * _attach:
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45 * add an item to the head of a list
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46 */
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47
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48 void
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49 _attach(struct linked_list **list, struct linked_list *item)
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50 {
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51 if (*list != NULL)
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52 {
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53 item->l_next = *list;
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54 (*list)->l_prev = item;
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55 item->l_prev = NULL;
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56 }
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57 else
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58 {
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59 item->l_next = NULL;
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60 item->l_prev = NULL;
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61 }
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62
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63 *list = item;
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64 }
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65
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66 /*
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67 * o_free_list:
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68 * Throw the whole object list away
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69 */
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71 void
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72 _o_free_list(struct linked_list **ptr)
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73 {
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74 register struct linked_list *item;
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75
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76 while (*ptr != NULL)
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77 {
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78 item = *ptr;
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79 *ptr = next(item);
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80 o_discard(item);
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81 }
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82 }
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83
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84 /*
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85 * o_discard:
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86 * free up an item and its object(and maybe contents)
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87 */
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88
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89 void
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90 o_discard(struct linked_list *item)
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91 {
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92 register struct object *obj;