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annotate xrogue/list.c @ 264:778938a5c21d

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UltraRogue: add location for character files. When using the -n option, UltraRogue will look for character files in a single location, similar to save files. The location is chosen by defining CHRDIR in getplay.c, at least until UltraRogue gets integrated with the build systems.
author John "Elwin" Edwards
date Sun, 19 Feb 2017 19:47:09 -0500
parents f54901b9c39b
children 0250220d8cdd
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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70
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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;
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93
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94 obj = OBJPTR(item);
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95 if (obj->contents != NULL)
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96 o_free_list(obj->contents);
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97 total -= 2;
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98 FREE(obj);
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99 FREE(item);
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100 }
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101
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102 /*
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103 r_free_fire_list
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104 Throw the whole list of fire monsters away. But don't
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105 discard the item (monster) itself as that belong to mlist.
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106 */
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107
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108 void
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109 _r_free_fire_list(struct linked_list **ptr)
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110 {
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111 register struct linked_list *item;
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112
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113 while (*ptr != NULL)
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114 {
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115 item = *ptr;
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116 *ptr = next(item);
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117 free(item);
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118 }
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119 }
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120 /*
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121 * r_free_list:
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122 * Throw the whole list of room exits away
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123 */
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124
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125 void
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126 _r_free_list(struct linked_list **ptr)
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127 {
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128 register struct linked_list *item;
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129
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130 while (*ptr != NULL)
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131 {
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132 item = *ptr;
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133 *ptr = next(item);
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134 r_discard(item);
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135 }
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136 }
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137
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138 /*
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139 * r_discard:
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140 * free up an item and its room
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141 */
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142
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143 void
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144 r_discard(struct linked_list *item)
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145 {
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146 total -= 2;
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147 FREE(DOORPTR(item));
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148 FREE(item);
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149 }
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150
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151 /*
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152 * t_free_list:
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153 * Throw the whole thing list away
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154 */
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155
220
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156 void
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157 _t_free_list(struct linked_list **ptr)
133
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158 {
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159 register struct linked_list *item;
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160
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161 while (*ptr != NULL)
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162 {
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163 item = *ptr;
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164 *ptr = next(item);
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165 t_discard(item);
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166 }
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167 }
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168
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169 /*
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170 * t_discard:
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171 * free up an item and its thing
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172 */
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173
220
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174 void
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175 t_discard(struct linked_list *item)
133
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176 {
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177 register struct thing *tp;
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178
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179 total -= 2;
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180 tp = THINGPTR(item);
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181 if (tp->t_name != NULL) FREE(tp->t_name);
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182 if (tp->t_pack != NULL)
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183 o_free_list(tp->t_pack);
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184 FREE(tp);
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185 FREE(item);
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186 }
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187
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188 /*
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189 * destroy_item:
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190 * get rid of an item structure -- don't worry about contents
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191 */
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192
220
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193 void
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194 destroy_item(struct linked_list *item)
133
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195 {
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196 total--;
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197 FREE(item);
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198 }
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199
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200 /*
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201 * new_item
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202 * get a new item with a specified size
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203 */
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204
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205 struct linked_list *
220
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206 new_item(int size)
133
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207 {
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208 register struct linked_list *item;
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209
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210 if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
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211 msg("Ran out of memory for header after %d items", total);
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212 if ((item->l_data = new(size)) == NULL)
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213 msg("Ran out of memory for data after %d items", total);
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214 item->l_next = item->l_prev = NULL;
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215 memset(item->l_data,0,size);
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216 return item;
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217 }
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218
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219 /*
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220 * creat_item:
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221 * Create just an item structure -- don't make any contents
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222 */
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223
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224 struct linked_list *
220
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225 creat_item(void)
133
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226 {
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227 register struct linked_list *item;
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228
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229 if ((item = (struct linked_list *) new(sizeof *item)) == NULL)
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230 msg("Ran out of memory for header after %d items", total);
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231 item->l_next = item->l_prev = NULL;
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232 return item;
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233 }
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234
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235 char *
220
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236 new(int size)
133
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237 {
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238 register char *space = ALLOC(size);
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239
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240 if (space == NULL) {
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241 sprintf(prbuf,"Rogue ran out of memory (used = %d, wanted = %d).",
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242 md_memused(), size);
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243 fatal(prbuf);
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244 }
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245 total++;
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246 return space;
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247 }
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248