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UltraRogue: clear the next_obj field when removing items from the floor. The next_obj field is a pointer which the top item in a stack uses to keep a list of the other items. When removing an item from the stack, rem_obj() failed to set next_obj to NULL, which can cause items in monster inventory to point to items earlier in the inventory list. That causes infinite co-recursion when saving or restoring.
author John "Elwin" Edwards
date Thu, 08 Feb 2018 20:54:34 -0500
parents 0ed67132cf10
children
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6 The Dungeons of Doom
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8 AT&T Bell Laboratories
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9 The Dungeons of Doom
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12 1. INTRODUCTION
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13
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14 Rogue is a screen-oriented fantasy game set in the
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15 ever-changing Dungeons of Doom. The game comes complete
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16 with monsters, spells, weapons, armor, potions, and other
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17 magical items. The dungeon's geography changes with every
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18 game, and although many magical items have certain
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19 identifiable properties, such as turning the player
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20 invisible, the physical manifestation of the magic changes
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21 each game. A red potion, for example, will cause the same
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22 reaction throughout a given game, but it may be a completely
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23 different potion in a new game.
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24
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25 Entering the dungeon with only a little food, armor,
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26 and a weapon, the player must develop a good strategy of
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27 when to fight, when to run, and how to best use any magical
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28 items found in the dungeon. To make things interesting, the
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29 player has a quest to return one of several unique
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30 artifacts, rumored to lie deep in the dungeon's bowels.
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31 Returning with this artifact brings great glory and the
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32 title of Complete Winner. But even after finding the
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33 artifact, the player may wish to continue further to match
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34 wits with an arch-devil, demon prince, or even a deity found
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35 far down in the dungeon. Defeating such a creature will
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36 gain the player many experience points, the basis for
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37 scoring in Rogue.
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38
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39 It is very difficult to return from the Dungeons of
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40 Doom. Few people ever make it out alive. Should this
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41 unlikely event occur, the player would be proclaimed a
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42 complete winner and handsomely rewarded for any booty
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43 removed from the dungeon.
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45
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46 2. CHARACTER CLASSES AND ATTRIBUTES
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47
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48 Before placing the player in the dungeon, the game
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49 requests the player to select a character class: a fighter,
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50 a magic user, a cleric, or a thief.
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51
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52 2.1 The_Fighter
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54 A fighter is very strong and will have a high strength
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55 rating. This great strength gives a fighter the best odds
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56 of winning a battle with a monster. At high experience
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57 levels the fighter also gets to attack multiple times in a
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58 single turn. This obviously further increases his chances
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59 at winning battles. Intrinsic to the fighter class is a
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60 robustness which results in 1 to 10 extra hit points for
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72 - 2 -
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76 every new experience level.
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77
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78 2.2 The_Magician
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79
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80 A magician's major attribute is intelligence, which
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81 enables the magician to cast spells. The number and variety
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82 of spells increases as the magician gains experience and
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83 intelligence. Other types of characters can cast spells,
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84 but only if they manage to gain extraordinarily high
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85 intelligence. Magic users are not as hearty as fighters;
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86 they receive 1 to 8 extra hit points for every new
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87 experience level.
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88
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89 2.3 The_Cleric
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90
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91 A cleric has a high wisdom rating and can thus pray.
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92 The number and variety of prayers which the gods are willing
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93 to grant to a cleric increase as the cleric gains experience
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94 and wisdom. Other character types can pray only if they
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95 manage to gain extraordinary wisdom.
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96
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97 Because of their religious nature, clerics can also
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98 affect the "undead" beings, like zombies and ghouls, which
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99 became monsters after they died. If an "undead" creature is
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100 next to a cleric, the cleric may try to turn it and cause it
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101 to flee. If the cleric is sufficiently powerful relative to
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