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annotate arogue7/util.c @ 144:708bb2dea17c

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arogue7, xrogue: prevent potential NULL dereferencing. It is possible for getpwuid() to fail and return NULL. Various md_get* functions now check for this.
author John "Elwin" Edwards
date Mon, 18 May 2015 10:53:22 -0400
parents b786053d2f37
children 1cd604c827a3
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adfa37e67084 Import Advanced Rogue 7.7 from the Roguelike Restoration Project (r1490)
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1 /*
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2 * util.c - all sorts of miscellaneous routines
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3 *
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4 * Advanced Rogue
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5 * Copyright (C) 1984, 1985, 1986 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 "curses.h"
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16 #include "rogue.h"
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17 #include <ctype.h>
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18 #include <string.h>
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19 #ifdef PC7300
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20 #include <track.h>
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21 #include <kcodes.h>
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22 #include <sys/window.h>
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23 extern struct uwdata wdata;
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24 #endif
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25
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26 /*
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27 * all sorts of miscellaneous routines
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28 *
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29 */
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30
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31
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32
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33
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34 /*
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35 * this routine computes the players current AC without dex bonus's
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36 */
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37 int
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38 ac_compute(ignoremetal)
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39 bool ignoremetal;
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40 {
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41 register int ac;
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42
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43 ac = pstats.s_arm; /* base armor of "skin" */
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44 if (cur_armor) {
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45 if (!ignoremetal ||
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46 (cur_armor->o_which != LEATHER &&
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47 cur_armor->o_which != STUDDED_LEATHER &&
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48 cur_armor->o_which != PADDED_ARMOR))
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49 ac -= (10 - cur_armor->o_ac);
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50 }
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51 if (player.t_ctype == C_MONK)
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52 ac -= pstats.s_lvl * 2 / 3;
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53 ac -= ring_value(R_PROTECT);
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54 if (cur_misc[WEAR_BRACERS] != NULL)
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55 ac -= cur_misc[WEAR_BRACERS]->o_ac;
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56 if (cur_misc[WEAR_CLOAK] != NULL)
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57 ac -= cur_misc[WEAR_CLOAK]->o_ac;
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58
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59 /* If player has the cloak, must be wearing it */
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60 if (cur_relic[EMORI_CLOAK]) ac -= 5;
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61
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62 if (ac > 10)
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63 ac = 10;
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64 return(ac);
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65 }
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66
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67 /*
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68 * aggravate:
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69 * aggravate all the monsters on this level
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70 */
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71
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72 aggravate(do_uniques, do_good)
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73 bool do_uniques, do_good;
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74 {
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75 register struct linked_list *mi;
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76 register struct thing *thingptr;
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77
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78 for (mi = mlist; mi != NULL; mi = next(mi)) {
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79 thingptr = THINGPTR(mi);
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80 if (do_good == FALSE && off(*thingptr, ISMEAN)) continue;
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81 if (do_uniques || off(*thingptr, ISUNIQUE)) runto(thingptr, &hero);
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82 }
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83 }
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84
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85 /*
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86 * cansee:
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87 * returns true if the hero can see a certain coordinate.
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88 */
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89
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90 cansee(y, x)
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91 register int y, x;
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92 {
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