annotate urogue/magic.c @ 280:70aa5808c782

Fix potential segfaults at restore related to ctime(). In some games, restore() passes the result of ctime() to mvprintw() or some other variadic message-formatting function. If ctime() has not been declared properly, its return type is inferred to be int instead of char *. This does not cause a warning because the compiler does not know the correct type of variadic arguments. On platforms where ints and pointers are not the same size, this can, probably depending on alignment, result in a segfault that is not easy to trace. Including time.h fixes the problem. Some games manually declared ctime() and avoided the bug. These declarations have also been replaced with the include.
author John "Elwin" Edwards
date Fri, 15 Sep 2017 20:51:10 -0400
parents c495a4f288c6
children
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1 /*
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2 magic.c - This file contains functions for casting magic spells
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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 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka
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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 <ctype.h>
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22 #include "rogue.h"
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23
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24 /*
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25 Cost for each level of spells level:
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26 */
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27
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28 static const int spell_cost[] = {1, 5, 17, 29, 53, 91, 159, 247, 396};
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29
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30 static struct spells monst_spells[] =
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31 {
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32 {5, S_SELFTELEP, SCR_MAGIC},
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33 {4, P_HEALING, POT_MAGIC | _TWO_},
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34 {3, P_REGENERATE, POT_MAGIC},
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35 {2, P_HEALING, POT_MAGIC},
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36 {4, P_HASTE, POT_MAGIC},
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37 {2, P_SEEINVIS, POT_MAGIC},
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38 {3, P_SHERO, POT_MAGIC},
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39 {5, P_PHASE, POT_MAGIC},
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40 {4, P_INVIS, POT_MAGIC},
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41 {4, WS_CANCEL, ZAP_MAGIC},
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42
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43 /* In reverse order of damage ability */
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44 {6, WS_ELECT, ZAP_MAGIC | _TWO_},
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45 {6, WS_FIRE, ZAP_MAGIC | _TWO_},
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46 {6, WS_COLD, ZAP_MAGIC | _TWO_},
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47 {6, WS_MISSILE, ZAP_MAGIC | _TWO_},
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48 {5, WS_ELECT, ZAP_MAGIC},
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49 {5, WS_FIRE, ZAP_MAGIC},
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50 {5, WS_COLD, ZAP_MAGIC},
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51 {4, WS_ELECT, ZAP_MAGIC | ISCURSED},
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52 {4, WS_FIRE, ZAP_MAGIC | ISCURSED},
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53 {4, WS_COLD, ZAP_MAGIC | ISCURSED},
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54 {3, WS_MISSILE, ZAP_MAGIC},
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55 {1, WS_MISSILE, ZAP_MAGIC | ISCURSED},
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56
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57 {-1, -1, 0}
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58 };
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59
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60 /*
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61 Spells that a player can cast Non-mus only know ISKNOW spells until found
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62 in the dungeon. Special classes know their spells one level lower, and
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63 blessed one above.
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64 */
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65
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66 static struct spells player_spells[] =
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67 {
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68 {1, WS_KNOCK, ZAP_MAGIC | ISKNOW},
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69 {1, S_SUMFAMILIAR, SCR_MAGIC | SP_DRUID | SP_MAGIC | SP_CLERIC, SP_ILLUSION },
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70 {1, S_GFIND, SCR_MAGIC | ISKNOW},
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71 {1, P_MONSTDET, POT_MAGIC | ISKNOW | SP_DRUID},
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72 {1, P_TREASDET, POT_MAGIC | ISKNOW | SP_MAGIC},
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73 {1, S_FOODDET, SCR_MAGIC | ISKNOW | SP_CLERIC},
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74 {1, S_LIGHT, SCR_MAGIC | ISKNOW | SP_ILLUSION},
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75
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76 {2, WS_CLOSE, ZAP_MAGIC | ISKNOW},
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77 {2, S_IDENTIFY, SCR_MAGIC | ISKNOW},
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78 {2, WS_HIT, ZAP_MAGIC | ISKNOW | SP_PRAYER},
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79 {2, P_SHIELD, POT_MAGIC | ISKNOW | SP_MAGIC},
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80 {2, P_COLDRESIST, POT_MAGIC | SP_WIZARD},
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81 {2, P_SEEINVIS, POT_MAGIC | SP_ILLUSION},
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82 {2, S_CONFUSE, SCR_MAGIC | SP_CLERIC},
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83 {2, P_SMELL, POT_MAGIC | SP_DRUID},
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84 {2, WS_MISSILE, ZAP_MAGIC | SP_MAGIC},
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85 {2, P_HEAR, POT_MAGIC},
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86
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87 {3, P_CLEAR, POT_MAGIC | ISKNOW},
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88 {3, P_HEALING, POT_MAGIC | ISKNOW | SP_PRAYER},
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89 {3, S_CURING, SCR_MAGIC | ISKNOW | SP_PRAYER},
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90 {3, WS_MONSTELEP, ZAP_MAGIC | SP_MAGIC},
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91 {3, WS_CANCEL, ZAP_MAGIC | SP_WIZARD},
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92 {3, S_SELFTELEP, SCR_MAGIC | SP_WIZARD},