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annotate xrogue/encumb.c @ 310:827441d05b3e

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Advanced Rogue family: fix some potential buffer overflows. Some code for determining the score file location assumed that PATH_MAX would be less than 1024, which cannot be guaranteed. Advanced Rogue 5 and 7, and XRogue, have had the buffers for the file name enlarged. UltraRogue never called the functions, so the code has been deleted instead.
author John "Elwin" Edwards
date Mon, 03 May 2021 19:05:37 -0400
parents e52a8a7ad4c5
children
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1 /*
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2 encumb.c - Stuff to do with encumberance
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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 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
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18 int packweight(struct thing *tp);
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19
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20 /*
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21 * updpack:
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22 * Update his pack weight and adjust fooduse accordingly
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23 */
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24
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25 void
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26 updpack(int getmax, struct thing *tp)
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27 {
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28
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29 reg int topcarry, curcarry;
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30
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31 if (getmax)
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32 tp->t_stats.s_carry = totalenc(tp); /* get total encumb */
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33 curcarry = packweight(tp); /* get pack weight */
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34
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35 /* Only update food use for the player (for now) */
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36 if (tp == &player) {
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37 topcarry = tp->t_stats.s_carry / 5; /* 20% of total carry */
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38 if(curcarry > 4 * topcarry) {
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39 if(rnd(100) < 80)
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40 foodlev = 3; /* > 80% of pack */
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41 } else if(curcarry > 3 * topcarry) {
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42 if(rnd(100) < 60)
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43 foodlev = 2; /* > 60% of pack */
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44 } else
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45 foodlev = 1; /* <= 60% of pack */
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46 }
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47 tp->t_stats.s_pack = curcarry; /* update pack weight */
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48 }
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49
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50
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51 /*
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52 * packweight:
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53 * Get the total weight of the hero's pack
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54 */
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55
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56 int
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57 packweight(struct thing *tp)
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58 {
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59 reg struct object *obj;
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60 reg struct linked_list *pc;
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61 reg int weight;
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62
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63 weight = 0;
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64 for (pc = tp->t_pack ; pc != NULL ; pc = next(pc)) {
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65 obj = OBJPTR(pc);
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66 weight += itemweight(obj);
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67 }
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68 if (weight < 0) /* in case of amulet */
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69 weight = 0;
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70
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71 /* If this is the player, is he wearing a ring of carrying? */
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72 if (tp == &player && ISWEARING(R_CARRY)) {
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73 register int temp, i;
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74
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75 temp = 0;
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76 for (i=0; i<NUM_FINGERS; i++) {
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77 if (cur_ring[i] != NULL && cur_ring[i]->o_which == R_CARRY) {
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78 if (cur_ring[i]->o_flags & ISCURSED) temp--;
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79 else temp += 2;
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80 }
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81 }
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82 weight -= (temp * weight) / 4;
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83 }
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84
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85 return(weight);
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86 }
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87
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88 /*
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89 * itemweight:
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90 * Get the weight of an object
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91 */
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