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annotate rogue5/list.c @ 170:0298a68cc179

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Advanced Rogue family: fix messages from some scrolls. When scrolls of magic mapping or gold detection were read, their characteristic messages were displayed before overwriting the whole screen to show the newly discovered information. They are now shown after updating the screen, so they will be visible.
author John "Elwin" Edwards
date Thu, 02 Jul 2015 08:04:16 -0400
parents f502bf60e6e4
children
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33
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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 * @(#)list.c 4.12 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include <stdlib.h>
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14 #include <curses.h>
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15 #include "rogue.h"
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16
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17 #ifdef MASTER
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18 int total = 0; /* total dynamic memory bytes */
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19 #endif
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20
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21 /*
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22 * detach:
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23 * takes an item out of whatever linked list it might be in
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24 */
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25
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26 void
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27 _detach(THING **list, THING *item)
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28 {
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29 if (*list == item)
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30 *list = next(item);
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31 if (prev(item) != NULL)
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32 item->l_prev->l_next = next(item);
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33 if (next(item) != NULL)
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34 item->l_next->l_prev = prev(item);
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35 item->l_next = NULL;
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36 item->l_prev = NULL;
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37 }
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38
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39 /*
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40 * _attach:
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41 * add an item to the head of a list
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42 */
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43
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44 void
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45 _attach(THING **list, THING *item)
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46 {
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47 if (*list != NULL)
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48 {
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49 item->l_next = *list;
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50 (*list)->l_prev = item;
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51 item->l_prev = NULL;
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52 }
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53 else
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54 {
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55 item->l_next = NULL;
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56 item->l_prev = NULL;
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57 }
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58 *list = item;
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59 }
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60
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61 /*
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62 * _free_list:
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63 * Throw the whole blamed thing away
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64 */
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65
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66 void
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67 _free_list(THING **ptr)
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68 {
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69 THING *item;
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70
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71 while (*ptr != NULL)
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72 {
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73 item = *ptr;
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74 *ptr = next(item);
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75 discard(item);
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76 }
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77 }
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78
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79 /*
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80 * discard:
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81 * Free up an item
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82 */
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83
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84 void
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85 discard(THING *item)
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86 {
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87 #ifdef MASTER
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88 total--;
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89 #endif
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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 * new_item
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95 * Get a new item with a specified size
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96 */
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97 THING *
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98 new_item(void)
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99 {
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100 THING *item;
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101
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102 if ((item = calloc(1, sizeof *item)) == NULL) {
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103 #ifdef MASTER
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104 msg("ran out of memory after %d items", total);
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105 #endif
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106 return NULL;
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107 }
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108
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109 #ifdef MASTER
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