Mercurial > hg > early-roguelike
annotate urogue/bag.c @ 304:e52a8a7ad4c5
Fix many compiler warnings.
There should only be two changes in behavior:
arogue7/fight.c, arogue7/fight.c: a to-hit bonus is now correctly
applied to characters who are not monks instead of monks who are not
empty-handed.
urogue/fight.c: fixed an interaction with the "debug" macro that could
cause the wrong message to be displayed.
author | John "Elwin" Edwards |
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date | Wed, 14 Apr 2021 18:55:33 -0400 |
parents | 0250220d8cdd |
children |
rev | line source |
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1 /* |
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2 bag.c - functions for dealing with bags |
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3 |
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4 UltraRogue: The Ultimate Adventure in the Dungeons of Doom |
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5 Copyright (C) 1986, 1992, 1993, 1995 Herb Chong |
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6 All rights reserved. |
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7 |
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8 See the file LICENSE.TXT for full copyright and licensing information. |
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9 */ |
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10 |
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11 /* |
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12 * new bag functions |
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13 * |
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14 * This is a simple version of bag.c that uses linked lists to perform the bag |
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15 * functions. The bag is just a linked list of objects (struct object) to be |
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16 * specific, but most of that is supposed to be hidden from the user, who |
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17 * should access the bag only through the functions presented here. |
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18 */ |
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19 |
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20 #include <stdlib.h> |
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21 #include "rogue.h" |
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22 |
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23 /* |
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24 * apply_to_bag |
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25 * |
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26 * This is the general bag manipulation routine. The bag is subjected to |
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27 * selection criteria and those objects which pass are processed by an action |
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28 * routine. The two criteria are type and filter function. The filter |
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29 * function returns TRUE if the object passes and FALSE otherwise. The filter |
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30 * function is passed the object and the user-supplied argument. This gives |
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31 * the user plenty of flexibility in determining which items will be |
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32 * processed. The action routine is passed the object, the id, and the |
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33 * user-supplied argument given to apply_to_bag. Specifying NULL for either |
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34 * the type or filter function means that criterion always selects. A NULL |
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35 * action routine means no processing is done and the first object which |
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36 * passes the filter is returned to the user. The action routine returns TRUE |
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37 * if processing should continue or FALSE if the current item should be |
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38 * returned to the caller. |
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39 * |
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40 * Returns NULL if the bag is empty or if nothing qualified. |
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41 * |
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42 * linked_list *bag_p; // linked list of objects |
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43 * int type; // what is its type (ARMOR, ...) |
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44 * int (*bff_p)(); // bag filter function |
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45 * int (*baf_p)(); // bag action routine |
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46 * long user_arg; // user argument for filter, action |
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47 * |
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48 */ |
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49 |
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50 struct object * |
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51 apply_to_bag(struct linked_list *bag_p, |
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52 int type, |
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53 int (*bff_p)(struct object *obj, bag_arg *user_arg), |
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54 int (*baf_p)(struct object *obj, bag_arg *user_arg, int id), |
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55 void *user_arg) |
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56 { |
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57 struct object *bag_obj_p = NULL; /* qualifying object */ |
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58 struct object *cur_obj_p; /* current object */ |
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59 bag_arg arg; |
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60 |
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61 arg.varg = user_arg; |
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62 |
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63 if (bag_p == NULL) |
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64 return (NULL); |
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65 |
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66 for (; bag_p != NULL; bag_p = next(bag_p)) |
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67 { |
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68 cur_obj_p = OBJPTR(bag_p); |
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69 |
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70 if (type != 0 && type != cur_obj_p->o_type) |
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71 continue; |
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72 |
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73 if (bff_p != NULL && !(*bff_p)(cur_obj_p, &arg)) |
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74 continue; |
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75 |
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76 /* |
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77 * At this point, we have an object which qualifies for |
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78 * processing |
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79 */ |
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80 |
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81 bag_obj_p = cur_obj_p; /* in case the user wants it */ |
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82 |
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83 if (baf_p != NULL && (*baf_p)(cur_obj_p, &arg, identifier(bag_obj_p))) |
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84 continue; |
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85 |
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86 /* |
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87 * We have an object which qualifies, quit now! |
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88 */ |
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89 |
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90 break; |
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91 } |
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92 |
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93 if (bag_p == NULL) |
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94 return (NULL); |
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95 |
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96 return (bag_obj_p); |
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97 } |
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98 |
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99 /* |
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100 count_bag() |
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101 |
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102 Counts up all bag items which meet the selection criteria |
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103 */ |
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104 |
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105 int |
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106 count_bag(linked_list *bag_p, |
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107 int type, |
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108 int (*bff_p)(struct object *obj, bag_arg *junk)) |
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109 { |
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110 int cnt = 0; |
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111 apply_to_bag(bag_p, type, bff_p, baf_increment, &cnt); |
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112 |
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113 return(cnt); |
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114 } |
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115 |
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116 /* |
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117 del_bag() |
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118 |
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119 Removes an object from a bag and throws it away. |
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120 */ |
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121 |
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122 void |
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123 del_bag(linked_list *bag_p, object *obj_p) |
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124 { |
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125 pop_bag(&bag_p, obj_p); /* get the thing from the bag */ |
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126 ur_free(obj_p); /* release the memory */ |
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127 } |
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128 |
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129 /* |
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130 pop_bag() |
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131 |
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132 Removes an item from a bag and returns it to the user. If the item is |
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133 not in the bag, return NULL. |
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134 */ |
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135 |
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136 struct object * |
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137 pop_bag(linked_list **bag_pp, object *obj_p) |
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138 { |
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139 linked_list *item_p; |
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140 |
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141 for (item_p = *bag_pp; item_p != NULL && OBJPTR(item_p) != obj_p; |
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142 item_p = next(item_p)); |
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143 |
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144 if (item_p == NULL) |
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145 return (NULL); |
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146 |
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147 _detach(bag_pp, item_p); |
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148 |
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149 return (obj_p); |
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150 } |
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151 |
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152 /* |
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153 push_bag() |
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154 |
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155 stuff another item into the bag |
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156 */ |
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157 |
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158 void |
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159 push_bag(linked_list **bag_pp, object *obj_p) |
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160 { |
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161 struct linked_list *item_p = NULL; |
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162 struct linked_list *new_p = NULL; |
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163 struct linked_list *best_p = NULL; |
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164 |
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165 new_p = new_list(); |
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166 new_p->data.obj = obj_p; /* attach our object */ |
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167 identifier(obj_p) = get_ident(obj_p); /* tag this object for */ |
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168 /* inventory */ |
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169 /* |
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170 * Find a place in the bag - try to match the type, then sort by |
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171 * identifier |
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172 */ |
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173 |
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174 for (item_p = *bag_pp; item_p != NULL; item_p = next(item_p)) |
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175 { |
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176 if ((OBJPTR(item_p))->o_type == obj_p->o_type) |
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177 { |
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178 if (best_p == NULL) |
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179 best_p = item_p; |
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180 else if (identifier((OBJPTR(item_p))) > |
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181 identifier((OBJPTR(best_p))) && |
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182 identifier((OBJPTR(item_p))) < |
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183 identifier(obj_p)) |
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184 best_p = item_p; |
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185 } |
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186 } |
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187 |
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188 _attach_after(bag_pp, best_p, new_p); /* stuff it in the list */ |
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189 |
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190 return; |
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191 } |
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192 |
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193 /* |
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194 scan_bag() |
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195 |
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196 Gets the object from the bag that matches the type and id. The object |
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197 is not removed from the bag. |
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198 */ |
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199 |
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200 struct object * |
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201 scan_bag(linked_list *bag_p, int type, int id) |
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202 { |
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203 object *obj_p = NULL; |
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204 |
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205 for (; bag_p != NULL; bag_p = next(bag_p)) |
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206 { |
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207 obj_p = OBJPTR(bag_p); |
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208 |
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209 if (obj_p->o_type == type && identifier(obj_p) == id) |
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210 break; |
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211 } |
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212 |
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213 if (bag_p == NULL) |
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214 return(NULL); |
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215 |
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216 return(obj_p); |
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217 } |
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218 |
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219 /* |
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220 baf_decrement_test() |
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221 |
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222 Assumes the argument is a pointer to int and it just decrements it. |
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223 Returns TRUE, except when the count goes to zero. |
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224 */ |
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225 |
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226 int |
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227 baf_decrement_test(struct object *obj_p, bag_arg *count_p, int id) |
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228 { |
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229 NOOP(obj_p); |
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230 NOOP(id); |
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231 |
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232 if (*count_p->iarg > 0) |
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233 return(TRUE); |
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234 |
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235 return(FALSE); |
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236 } |
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237 |
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238 /* |
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239 baf_identify() |
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240 |
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241 Bag action function to identify an object. This is needed to conform |
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242 to bag action routine calling conventions and to put the linked list |
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243 structure on top of the object before calling whatis() |
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244 */ |
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245 |
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246 int |
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247 baf_identify(struct object *obj_p, bag_arg *junk, int id) |
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248 { |
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249 linked_list l; |
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250 linked_list *lp = &l; |
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251 |
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252 NOOP(junk); |
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253 NOOP(id); |
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254 |
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255 lp->data.obj = obj_p; /* stuff object in the right place */ |
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256 whatis(lp); |
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257 |
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258 return(TRUE); |
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259 } |
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260 |
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261 /* |
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262 baf_increment() |
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263 |
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264 Assumes the argument is a pointer to int and it just increments it and |
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265 returns TRUE |
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266 */ |
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267 |
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268 int |
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269 baf_increment(object *obj_p, bag_arg *count_p, int id) |
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270 { |
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271 NOOP(obj_p); |
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272 NOOP(id); |
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273 |
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274 (*count_p->iarg)++; |
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275 |
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276 return(TRUE); |
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277 } |
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278 |
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279 /* |
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280 baf_print_item() |
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281 Bag action function to print a single item, inventory style. |
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282 */ |
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283 |
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284 int |
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285 baf_print_item(struct object *obj_p, bag_arg *type, int id) |
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286 { |
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287 char inv_temp[3 * LINELEN]; /* plenty of space for paranoid programmers */ |
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288 |
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289 if (*type->iarg == 0) |
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290 sprintf(inv_temp, "%c%c) %s", obj_p->o_type, |
300
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291 print_letters[id], inv_name(obj_p, LOWERCASE)); |
256
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292 else |
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293 sprintf(inv_temp, "%c) %s", print_letters[id], |
300
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294 inv_name(obj_p, LOWERCASE)); |
256
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295 |
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296 add_line(inv_temp); |
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297 return(TRUE); |
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298 } |
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299 |
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300 /* |
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301 bff_group() |
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302 This bag filter function checks to see if two items can be combined by |
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303 adjusting the count. Grouped items can be combined if the group numbers |
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304 match. The only other item that is allowed to have a count is food, and |
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305 there an exact match is required. |
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306 */ |
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307 |
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308 int |
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309 bff_group(struct object *obj_p, bag_arg *arg) |
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310 { |
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311 struct object *new_obj_p = arg->obj; |
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312 |
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313 if (new_obj_p->o_group > 0 && new_obj_p->o_group == obj_p->o_group) |
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314 return(TRUE); |
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315 |
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316 if (new_obj_p->o_type == FOOD && |
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317 obj_p->o_type == new_obj_p->o_type && |
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318 obj_p->o_which == new_obj_p->o_which) |
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319 return(TRUE); |
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320 |
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321 return(FALSE); |
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322 } |
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323 |
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324 /* |
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325 bff_callable |
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326 Figures out which items can be callable: current rules are: |
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327 potions, scrolls, staffs, and rings. |
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328 */ |
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329 |
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330 int |
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331 bff_callable(struct object *obj_p, bag_arg *junk) |
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332 { |
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333 NOOP(junk); |
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334 |
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335 if (obj_p->o_type == POTION || obj_p->o_type == RING || |
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336 obj_p->o_type == STICK || obj_p->o_type == SCROLL) |
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337 return(TRUE); |
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338 |
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339 return(FALSE); |
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340 } |
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341 |
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342 /* |
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343 bff_markable() |
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344 Selects which items can be marked. Current rules exclude only gold. |
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345 */ |
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346 |
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347 int |
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348 bff_markable(struct object *obj_p, bag_arg *junk) |
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349 { |
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350 NOOP(junk); |
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351 |
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352 if (obj_p->o_type == GOLD) |
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353 return(FALSE); |
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354 |
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355 return(TRUE); |
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356 } |
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357 |
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358 /* |
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359 bffron() |
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360 returns TRUE if hero is wearing this ring |
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361 */ |
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362 |
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363 int |
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364 bffron(object *obj_p, bag_arg *junk) |
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365 { |
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366 NOOP(junk); |
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367 |
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368 return(cur_ring[LEFT_1] == obj_p || cur_ring[LEFT_2] == obj_p || |
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369 cur_ring[LEFT_3] == obj_p || cur_ring[LEFT_4] == obj_p || |
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370 cur_ring[LEFT_5] || |
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371 cur_ring[RIGHT_1] == obj_p || cur_ring[RIGHT_2] == obj_p || |
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372 cur_ring[RIGHT_3] == obj_p || cur_ring[RIGHT_4] == obj_p || |
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373 cur_ring[RIGHT_5]); |
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374 } |
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375 |
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376 /* |
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377 bff_zappable() |
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378 Selects which items can be zapped. This includes both sticks and |
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379 magically enhanced weapons with lightning ability. |
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380 */ |
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381 |
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382 int |
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383 bff_zappable(struct object *obj_p, bag_arg *junk) |
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384 { |
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385 NOOP(junk); |
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386 |
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387 if (obj_p->o_type == STICK) |
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388 return(TRUE); |
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389 |
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390 if (obj_p->o_type == WEAPON && obj_p->o_flags & ISZAPPED) |
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391 return(TRUE); |
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392 |
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393 return (FALSE); |
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394 } |
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395 |
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396 /* |
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397 baf_curse() |
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398 Curse all non-artifact items in the player's pack |
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399 */ |
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400 |
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401 int |
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402 baf_curse(struct object *obj_p, bag_arg *junk, int id) |
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403 { |
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404 NOOP(junk); |
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405 NOOP(id); |
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406 |
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407 if (obj_p->o_type != ARTIFACT && rnd(8) == 0) |
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408 { |
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409 obj_p->o_flags |= ISCURSED; |
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410 obj_p->o_flags &= ~ISBLESSED; |
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411 } |
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412 |
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413 return(TRUE); |
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414 } |
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415 |
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416 /* |
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417 bafcweapon() |
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418 bag action routine to fetch the current weapon |
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419 */ |
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420 |
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421 int |
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422 bafcweapon(struct object *obj_p, bag_arg *junk, int id) |
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423 { |
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424 NOOP(junk); |
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425 NOOP(id); |
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426 |
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427 if (obj_p == cur_weapon) |
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428 return(FALSE); /* found what we wanted - stop and return it */ |
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429 |
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430 return(TRUE); |
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431 } |
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432 |
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433 /* |
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434 bafcarmor() |
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435 bag action routine to fetch the current armor |
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436 */ |
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437 |
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438 int |
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439 bafcarmor(struct object *obj_p, bag_arg *junk, int id) |
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440 { |
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441 NOOP(junk); |
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442 NOOP(id); |
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443 |
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444 if (obj_p == cur_armor) |
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445 return(FALSE); /* found what we wanted - stop and return it */ |
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446 |
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447 return(TRUE); |
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448 } |