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annotate rogue5/rogue.doc.in @ 81:0e212d46b68f

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rogue4: don't put savefile metadata into the savefile. The save_file() function in save.c stored the savefile's device number, inode number, creation time, and modification time in the file. The restore() function read them back, and apparently used to compare them to protect against cheaters. Unfortunately, the types and sizes of these numbers differ from system to system, which ruins the Roguelike Restoration Project's fine portability work. So they have been removed from the savefile. This BREAKS SAVEFILE COMPATIBILITY, but old files can be converted by excising the chunk starting at offset 0x22 with length sizeof(ino_t) + sizeof(dev_t) + 2 * sizeof(time_t). That's 0x14 on i686 and 0x20 on x86_64, at least with current versions of Linux and glibc.
author John "Elwin" Edwards
date Mon, 05 Aug 2013 20:49:41 -0700
parents f502bf60e6e4
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8 A Guide to the Dungeons of Doom
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11 Michael C. Toy
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12 Kenneth C. R. C. Arnold
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15 Computer Systems Research Group
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16 Department of Electrical Engineering and Computer Science
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17 University of California
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18 Berkeley, California 94720
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23 ABSTRACT
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24
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25 Rogue is a visual CRT based fantasy game which runs
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26 under the UNIX timesharing system. This paper de-
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27 scribes how to play rogue, and gives a few hints for
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28 those who might otherwise get lost in the Dungeons
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29 of Doom.
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34 1. Introduction
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35
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36 You have just finished your years as a student at the
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37 local fighter's guild. After much practice and sweat you
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38 have finally completed your training and are ready to embark
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39 upon a perilous adventure. As a test of your skills, the
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40 local guildmasters have sent you into the Dungeons of Doom.
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41 Your task is to return with the Amulet of Yendor. Your
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42 reward for the completion of this task will be a full mem-
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43 bership in the local guild. In addition, you are allowed to
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44 keep all the loot you bring back from the dungeons.
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45
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46 In preparation for your journey, you are given an
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47 enchanted mace, a bow, and a quiver of arrows taken from a
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48 dragon's hoard in the far off Dark Mountains. You are also
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49 outfitted with elf-crafted armor and given enough food to
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50 reach the dungeons. You say goodbye to family and friends
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51 for what may be the last time and head up the road.
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52
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53 You set out on your way to the dungeons and after sev-
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54 eral days of uneventful travel, you see the ancient ruins
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55 that mark the entrance to the Dungeons of Doom. It is late
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56 at night, so you make camp at the entrance and spend the
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57 ____________________
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58 UNIX is a trademark of Bell Laboratories
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71 USD:33-2 A Guide to the Dungeons of Doom
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73
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74 night sleeping under the open skies. In the morning you
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75 gather your weapons, put on your armor, eat what is almost
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76 your last food, and enter the dungeons.
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77
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78 2. What is going on here?
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79
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80 You have just begun a game of rogue. Your goal is to
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81 grab as much treasure as you can, find the Amulet of Yendor,
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82 and get out of the Dungeons of Doom alive. On the screen, a
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83 map of where you have been and what you have seen on the
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84 current dungeon level is kept. As you explore more of the
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85 level, it appears on the screen in front of you.
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86
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87 Rogue differs from most computer fantasy games in that
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88 it is screen oriented. Commands are all one or two
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89 keystrokes1 and the results of your commands are displayed
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90 graphically on the screen rather than being explained in
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91 words.2
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92
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93 Another major difference between rogue and other com-
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94 puter fantasy games is that once you have solved all the
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95 puzzles in a standard fantasy game, it has lost most of its
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96 excitement and it ceases to be fun. Rogue, on the other
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97 hand, generates a new dungeon every time you play it and
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98 even the author finds it an entertaining and exciting game.
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99
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100 3. What do all those things on the screen mean?
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101
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102 In order to understand what is going on in rogue you
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103 have to first get some grasp of what rogue is doing with the
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