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annotate srogue/monsters.c @ 110:5f51f7d9805f

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arogue5: fix some save/restore-related crashes. The save/restore code took the pointer intended as an argument for the doctor() daemon and wrote it to the savefile as an int. I don't know why it took so long to fail horribly. The problem has been avoided by replacing the value with &player when restoring. That seems to be the only argument ever actually used. The code also writes only four bytes for an unsigned long; if sizeof(long) == 8, it casts to unsigned int first. It failed to do the cast when reading back, with the result that four bytes were read and the other half of the number was effectively uninitialized. It apparently works now, but the save/restore code ought still to be regarded as decidedly unfortunate.
author John "Elwin" Edwards
date Mon, 06 Jan 2014 15:57:17 -0500
parents 2128c7dc8a40
children 7bdac632ab9d
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36
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1 /*
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2 * File with various monster functions in it
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3 *
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4 * @(#)monsters.c 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include "rogue.h"
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18 #include <ctype.h>
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19 #include "rogue.ext"
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20
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21 /*
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22 * rnd_mon:
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23 * Pick a monster to show up. The lower the level,
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24 * the meaner the monster.
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25 */
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26 rnd_mon(wander,baddie)
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27 bool wander;
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28 bool baddie; /* TRUE when from a polymorph stick */
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29 {
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30 reg int i, ok, cnt;
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31
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32 cnt = 0;
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33 if (levcount == 0) /* if only asmodeus possible */
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34 return(MAXMONS);
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35 if (baddie) {
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36 while (1) {
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37 i = rnd(MAXMONS); /* pick ANY monster */
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38 if (monsters[i].m_lev.l_lev < 0) /* skip genocided ones */
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39 continue;
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40 return i;
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41 }
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42 }
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43 ok = FALSE;
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44 do {
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45 /*
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46 * get a random monster from this range
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47 */
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48 i = rnd(levcount);
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49 /*
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50 * Only create a wandering monster if we want one
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51 * (or the count is exceeded)
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52 */
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53 if (!wander || mtlev[i]->m_lev.d_wand || ++cnt > 500)
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54 ok = TRUE;
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55 } while(!ok);
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56 return (midx(mtlev[i]->m_show));
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57 }
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58
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59 /*
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60 * lev_mon:
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61 * This gets all monsters possible on this level
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62 */
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63 lev_mon()
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64 {
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65 reg int i;
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66 reg struct monster *mm;
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67
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68 levcount = 0;
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69 for (i = 0; i < MAXMONS; i++) {
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70 mm = &monsters[i];
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71 if (mm->m_lev.h_lev >= level && mm->m_lev.l_lev <= level) {
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72 mtlev[levcount] = mm;
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73 if (++levcount >= MONRANGE)
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74 break;
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75 }
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76 }
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77 if (levcount == 0) /* if no monsters are possible */
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78 mtlev[0] = &monsters[MAXMONS]; /* then asmodeus 'A' */
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79 }
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80
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81 /*
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82 * new_monster:
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83 * Pick a new monster and add it to the list
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84 */
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85 struct linked_list *
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86 new_monster(type, cp, treas)
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87 struct coord *cp;
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88 bool treas;
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89 char type;
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90 {
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91 reg struct linked_list *item;
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92 reg struct thing *tp;
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93 reg struct monster *mp;
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94 reg struct stats *st;
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95 float killexp; /* experience gotten for killing him */
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96
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97 item = new_item(sizeof(struct thing));
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98 attach(mlist, item);
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99 tp = THINGPTR(item);
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100 st = &tp->t_stats;
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101 mp = &monsters[type]; /* point to this monsters structure */
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102 tp->t_type = mp->m_show;
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103 tp->t_indx = type;
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104 tp->t_pos = *cp;
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105 tp->t_room = roomin(cp);