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Advanced Rogue 7: fix a crash when casting magic missile. do_zap() dereferenced a struct object pointer while ignoring the result of a NULL check. XRogue had the same problem, though triggering it was unlikely, since XRogue does not include a magic missile spell. Reported by John Harris of @Play.
author John "Elwin" Edwards
date Thu, 21 Oct 2021 21:00:15 -0400
parents 2128c7dc8a40
children
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1 .PH
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2 .fp 9 CR
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3 .nr Hu 1
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4 .nr Pt 0
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5 .SA 1
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6 .S +4 C
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7 .ad c
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8 .B "Super-Rogue Version 9.0"
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9 .br
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10 .ad b
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11 .SP 0.45
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12 .S -4 C
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13 .ad c
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14 .I "Robert D. Kindelberger"
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15 .br
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16 .ad b
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17 .SP 2.6
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18 .ad c
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19 .I "A Tutorial on the Visual Game of Rogue - Version 9.0"
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20 .br
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21 .ad b
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22 .SP 2
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23 .P
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24 Rogue is a visual CRT based fantasy game which runs
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25 under the UNIX\*F
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26 .FS
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27 UNIX is a trademark of AT&T Bell Laboratories.
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28 .FE
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29 timesharing system. This paper describes
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30 how to play rogue and gives a few hints for those who might
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31 otherwise get lost (or killed) in the Dungeons of Doom.
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32 .SP 5
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33 .PH "''- % -''"
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34 .H 1 INTRODUCTION
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35 .P
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36 You have just finished your years as a student
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37 at the local fighter's guild.
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38 After much practice and sweat you have finally completed your training and
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39 are ready to embark upon a perilous adventure. As a test of your skills,
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40 the local guildmasters have sent you into the Dungeons of Doom. Your
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41 task is to return with the Amulet of Yendor.
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42 Your reward for the completion
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43 of this task will be a full membership in the local guild.
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44 In addition, you are
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45 allowed to keep all the loot you bring back from the dungeons.
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46 .P
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47 In preparation for your journey, you are given an enchanted weapon, taken
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48 from a dragon's hoard in the far off Dark Mountains.
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49 You are also outfitted
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50 with elf-crafted armor and given enough food to reach the dungeons. You
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51 say good-bye to family and friends for what may be the last time and head
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52 up the road.
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53 .P
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54 You set out on your way to the dungeons and after
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55 several days of uneventful
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56 travel, you see the ancient ruins that mark the entrance to the Dungeons
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57 of Doom. It is late at night so you make camp at the entrance and spend
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58 the night sleeping under the open skies. In the morning you gather
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59 your weapon, put on your armor, eat what is almost your last food and enter
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60 the dungeons.
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61 .H 1 "WHAT IS GOING ON HERE?"
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62 .P
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63 You have just begun a game of rogue.
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64 Your goal is to grab as much treasure
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65 as you can, find the \f3Amulet of Yendor\f1, and get out of the Dungeons
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66 of Doom alive.
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67 On the screen, a map of where you have been and what you have seen on
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68 the current dungeon level is kept. As you explore more of the level,
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69 it appears on the screen in front of you.
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70 .P
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71 Rogue differs from most computer fantasy games in that it is screen
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72 oriented. Commands are all one or two keystrokes\*F
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73 .FS
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74 As opposed to pseudo English sentences.
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75 .FE
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76 and the results of your commands are displayed
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77 graphically on the screen rather than being explained in words.
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78 .P
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79 Another major difference between rogue and other computer fantasy games
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80 is that once you have solved all the puzzles in a standard fantasy game,
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81 it has lost most of its excitement and it ceases to be fun. Rogue on the
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82 other hand generates a new dungeon every time you play it and
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83 even the author finds it an entertaining and exciting game.
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84 .H 1 "WHAT DO ALL THOSE THINGS ON THE SCREEN MEAN?"
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85 .P
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86 In order to understand what is going on in rogue you have to first get
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87 some grasp of what rogue is doing with the screen.
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88 The rogue screen is intended to replace the \f3You can see ...\f1 descriptions
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89 of standard fantasy games. Here is a sample of what a rogue screen might
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90 look like:
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91 .SP
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92 .DS
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93 \f9
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94 ---------------------
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95 |...................+###########+
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96 |...@...........[...|
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97 |........H..........|
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98 |...................|
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99 --------+------------
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100 ####
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101 +
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102
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103 Level: 1 Gold: 0 Hp:12(12) Ac: 6 Exp:1/0 Vol:36%
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104 Str:16(16) Exp:12(12) Dex:11(11) Wis:14(14) Con:18(18) Carry:50/170