Cloak of displacement/zh-CN
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幻影斗篷（cloak of displacement）是NetHack中的一种斗篷类防具。它是一种魔法斗篷，由布制成，未鉴定时外观是随机的。
Contents
生成
所有非精灵的游侠会在游戏开始时获得一件+2幻影斗篷[1][2]。
所有非僧侣职业的玩家怪物生成时有7⁄64（约10.94%）的概率获得一件幻影斗篷[3][4]。对于牧师职业的玩家怪物，其起始斗篷有3⁄4的概率被替换为长袍，因此牧师玩家怪物获得幻影斗篷的概率仅有约2.73%；巫师职业的玩家怪物的起始斗篷则有1⁄2的概率被替换为魔法抵抗斗篷，因此他们实际只有约5.47%的概率获得幻影斗篷[5][6]。
描述
幻影斗篷的基础AC加成为1，且能提供MC1和幻影特质。如果你可以看见自己或感知怪物，且未被吞噬，穿戴或脱下斗篷都会自动鉴定它。如果你处于隐形状态而怪物无法看见隐形，幻影特质不会生效。
策略
幻影斗篷是游戏中幻影特质的唯一来源，该特质能够有效地误导敌人的攻击。在游戏早期它的实用性并没有隐形那么强，因为隐形也可以误导怪物的攻击，还会在怪物攻击你时赋予其-2的命中惩罚。但随着游戏的推进，可看见隐形的怪物增多，幻影斗篷就能显露其强大。
使用骑枪或长柄武器的玩家也能利用幻影的误导效应，让敌人保持在猛推的范围内，从而创造优势。
历史
幻影斗篷最初于NetHack 3.0.0加入游戏。从3.0.0到3.4.3版本，以及这些版本的衍生作品中，幻影斗篷在穿戴时能赋予MC2。穿脱幻影斗篷时输出的消息在NetHack 3.6.0时加入，不过在此之前穿脱幻影斗篷已经可以自动鉴定它了。
起源
幻影斗篷的设定源自《龙与地下城》（D&D）。在D&D的设定中，它是以幻影兽（displacer beast）的外皮制成的黑色皮革斗篷，幻影兽触手中的肌腱和能够偏折光线的布料被织入斗篷中，使得它能够在穿戴者附近至多6英寸（约0.15米）距离的位置生成穿戴者的幻影，从而保护穿戴者免受攻击。幻影斗篷只能在穿戴者有意识且处于调谐状态时发挥作用，一旦穿戴者受到攻击，斗篷就会暂时失效。
Variants
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Some variants make it possible for monsters to gain displacement from wearing this cloak. Shimmering dragons and their scales (and scale mail) may also provide an additional source of displacement.
SLASH'EM
In SLASH'EM, the cloak of displacement grants MC2.
Upgrading a cloak of displacement has a 1⁄2 chance of producing an elven cloak, and upgrading an elven cloak or oilskin cloak has a 1⁄4 chance of producing a cloak of displacement.
Deluder is an artifact cloak of displacement that doubles as a luck item and confers stealth, and is the guaranteed second sacrifice gift for Wizards.
GruntHack
GruntHack implements proper displacement for monsters, making it possible for them to obtain the property by wearing the cloak.
UnNetHack
In UnNetHack, the cloak of displacement grants MC2 while worn.
DynaHack
In DynaHack, the cloak of displacement grants MC2 while worn.
Sokoban offers a cloak as one of the three types of prizes, which has a 1⁄2 chance of being a cloak of displacement.
dNetHack
In dNetHack, the cloak of displacement confers 1 AC, 0 DR, MC2, and displacement while worn.
One map of the Grue's Cavern has a treasure pile with a cloak of displacement.
The Mantle of Heaven and The Vestment of Hell are artifact cloaks that always have a specific randomized appearance, making it possible for them to be cloaks of displacement.
A cloak of displacement can be used to repair the active camoflauge system of imperial elven body armor, conferring displacement.
FIQHack
In FIQHack, the cloak of displacement gives MC3 and monsters can gain displacement from wearing it; monster displacement functions somewhat similar to GruntHack, though with various differences (e.g., the displaced images of monsters detected via telepathy or monster detection do not appear).
The November NetHack Tournament
In The November NetHack Tournament, the deathmatch opponent has a 1⁄2 chance of generating with a blessed fireproof +4 or +5 cloak of displacement if they represent a character that lacks a cloak and is not a Monk or Wizard.
EvilHack
In EvilHack, monsters can gain displacement by wearing this cloak.
