Frost horn/zh-CN
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冰霜号角（frost horn）是NetHack中的一种调性乐器类工具。它由骨头制成，未鉴定时外观为“号角”。
Contents
生成
冰霜号角在随机生成工具中占比1⁄500（0.2%）。
描述
使用冰霜号角的效果根据玩家是否选择即兴演奏，以及号角是否有充能有关[4][5]：
- 即兴演奏有充能的冰霜号角时，游戏会请求玩家选择一个方向，号角会消耗1点充能，向指定的方向发射一道寒冷射线，并自动鉴定自身[6][7][8]。和其他类似的攻击一样，号角发出的寒冷射线可以被墙壁反弹，或被具有反射特质的实体反弹，可以使水池冻结为冰面，使熔岩冷却为地板，以及破坏门[9][10][11][12][13][14][15]，在接触水元素位面的水体后则会被阻断[16]。
- 即兴演奏没有充能的冰霜号角时，它会发挥和即兴演奏加工号角相同的效果，即发出噪声唤醒并惊吓附近的怪物[8][28][29][30][31][32]。
- 选择不即兴演奏时，冰霜号角会和其他的调性乐器一样演奏出旋律，但没有其他的效果，号角的充能值也不会被消耗[33][34][35]。
冰霜号角是气鸣乐器，因此玩家若满足以下条件之一便无法演奏它：拥有勒颈特质；变形为水生怪物；体型为微小；具有无呼吸特质；无法说话；没有头；变形为只能发出嗡嗡声的形态；位于水下[36][37][38]。
对冰霜号角进行充能时，未诅咒的充能来源会补充1d4充能，受祝福的来源会补充2d4充能，被诅咒的来源则会清空其所有充能[39][40][41][42]。冰霜号角最多可储存20点充能，其充能计数在达到7以后不会再增加，但再充能次数没有限制[43]。
冰霜号角的BUC对其效果没有影响。怪物能够使用冰霜号角发出射线攻击玩家。
策略
冰霜号角在游戏前期是非常实用的物品，它造成的高伤害能够降低玩家击杀强力怪物的难度，充能耗尽后也能用于吓退怪物。但如果游戏前期生成携带冰霜号角的怪物的话，也会造成很大的麻烦，所幸冰霜号角的生成概率并不高，玩家极少能遇到携带冰霜号角的怪物。
以下内容涉及即将到来的版本（NetHack 3.7.0）之信息。如果该版本已发布，请验证此处信息是否准确，并作出相应修改，以将其并入页面。
根据commit 6e49372d，现在无心智的怪物不会被乐器的声音吓退了。历史
冰霜号角最初于NetHack 3.0.0加入游戏。
Variants
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In variants that import the advent calendar patch, a frost horn is among the various tools that may appear as the Christmas present on day 24.
SLASH'EM
In SLASH'EM, upgrading a tooled horn successfully has a 1⁄3 chance of producing a frost horn, and upgrading a frost horn successfully will produce a tooled horn. Dipping a frost horn in a potion of amnesia will use up the potion and "downgrade" the item to a tooled horn.
UnNetHack
In UnNetHack, rare instruments shops have a 3⁄100 chance of generating a frost horn on each square. UnNetHack also incorporates the advent calendar patch, and a frost horn may appear as the Christmas present for day 24.
dNetHack
In dNetHack, Troubadours start the game with knowledge of the frost horn's appearance.
Music instruments shops have a 1⁄50 chance of a frost horn being generated on each square.
Dipping a frost horn into a potion of amnesia will use up the potion and "downgrade" the item to a tooled horn, as in SLASH'EM.
Frost horns can be used as substitutes for tooled horns when playing songs via the musicalize spell skill. The Singing Sword can learn a 'chilling song' if the hero applies a charged frost horn with the artifact in their possession, and the chilling song causes the artifact to deal double damage against monsters that lack cold resistance and are not deaf or mindless.
FIQHack
In FIQHack, frost horns deal XLd6 damage with their rays, making them less powerful (but also less dangerous to a hero) in the early game.
SpliceHack
In SpliceHack, a frost horn can be created at a furnace by combining a tooled horn and a wand of cold.
notdNetHack
In notdNetHack and notnotdNetHack, in addition to dNetHack details, Amon will always drop a frost horn upon death—this frost horn has a high chance of an object material other than the standard bone.
SlashTHEM
In SlashTHEM, upgrading functions as it does in SLASH'EM, as does dipping a frost horn into a potion of amnesia.
As in dNetHack and its derivatives, Bards start the game with knowledge of the frost horn's appearance, and frost horns can similarly be used as substitutes for tooled horns when playing songs via the musicalize spell skill.
Musicians start each game with a frost horn.
Rare instruments shops have a 3⁄100 chance of generating a frost horn on each square, as in UnNetHack.
Hack'EM
In Hack'EM, Ice Mages start each game with a blessed frost horn.
Rare instruments shops have a 3⁄100 chance of generating a frost horn on each square, as in UnNetHack and SlashTHEM.
Upgrading a frost horn successfully will produce a fire horn, and vice versa.
引用及注释
- ↑ src/mkobj.c in NetHack 3.6.7, line 960
- ↑ src/read.c in NetHack 3.6.7, line 694
- ↑ src/read.c in NetHack 3.6.7, line 699
- ↑ src/apply.c in NetHack 3.6.7, line 3726
- ↑ src/music.c in NetHack 3.6.7, line 700
- ↑ src/music.c in NetHack 3.6.7, line 584
- ↑ src/music.c in NetHack 3.6.7, line 598
- ↑ 8.0 8.1 src/music.c in NetHack 3.6.7, line 840
- ↑ src/zap.c in NetHack 3.6.7, line 4481
- ↑ src/zap.c in NetHack 3.6.7, line 4498
- ↑ src/zap.c in NetHack 3.6.7, line 4501
- ↑ src/zap.c in NetHack 3.6.7, line 4507
- ↑ src/zap.c in NetHack 3.6.7, line 4544
- ↑ src/zap.c in NetHack 3.6.7, line 4550
- ↑ src/zap.c in NetHack 3.6.7, line 4634
- ↑ src/zap.c in NetHack 3.6.7, line 4486
- ↑ src/music.c in NetHack 3.6.7, line 600
- ↑ src/zap.c in NetHack 3.6.7, line 3643
- ↑ src/zap.c in NetHack 3.6.7, line 3800
- ↑ src/zap.c in NetHack 3.6.7, line 3649
- ↑ src/zap.c in NetHack 3.6.7, line 3653
- ↑ src/zap.c in NetHack 3.6.7, line 3808
- ↑ src/music.c in NetHack 3.6.7, line 591
- ↑ src/zap.c in NetHack 3.6.7, line 2336
- ↑ src/zap.c in NetHack 3.6.7, line 2338
- ↑ src/zap.c in NetHack 3.6.7, line 2342
- ↑ src/zap.c in NetHack 3.6.7, line 2346
- ↑ src/music.c in NetHack 3.6.7, line 604
- ↑ src/music.c in NetHack 3.6.7, line 609
- ↑ src/music.c in NetHack 3.6.7, line 61
- ↑ src/music.c in NetHack 3.6.7, line 70
- ↑ src/music.c in NetHack 3.6.7, line 78
- ↑ src/music.c in NetHack 3.6.7, line 707
- ↑ src/music.c in NetHack 3.6.7, line 714
- ↑ src/music.c in NetHack 3.6.7, line 769
- ↑ src/music.c in NetHack 3.6.7, line 693
- ↑ src/mondata.c in NetHack 3.6.7, line 336: 会发出嗡嗡声的怪物包括杀人蜂、蜂王、电子虫和玄蚊
- ↑ src/music.c in NetHack 3.6.7, line 690
- ↑ src/read.c in NetHack 3.6.7, line 687
- ↑ src/read.c in NetHack 3.6.7, line 690
- ↑ src/read.c in NetHack 3.6.7, line 692
- ↑ src/read.c in NetHack 3.6.7, line 697
- ↑ src/read.c in NetHack 3.6.7, line 573
