View source for Vampire (monster attribute)

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The '''vampire''' is a form of [[property]] in ''[[NetHack]]'' and some of its variants that is governed by a pointer or flag, and designates monsters as being vampiric.

{{todo|Expand and tailor main section to reflect what does and does not use the pointer, and add historical information.}}

==Description==
In ''NetHack'', vampires are defined using the pointer <tt>'''is_vampire(ptr)'''</tt> in <tt>[[mondata.h]]</tt> and consist of all monsters from the [[Vampire (monster class)|vampire]] [[monster class]]:{{refsrc|include/mondata.h|198|nethack=3.6.7}}

* {{monsymlink|vampire}}
* {{monsymlink|vampire lord}}
* {{monsymlink|Vlad the Impaler}}
* [[Deferred]] monsters:
** {{monsymlink|vampire mage}}

Vampires lack a reflection and are thus unaffected by [[applied]] [[mirror]]s.{{refsrc|src/apply.c|942|version=NetHack 3.6.7}}{{refsrc|src/apply.c|1049|version=NetHack 3.6.7}} A hero standing on any [[altar]] will [[scare]] vampires that approach them, similar to standing on [[Elbereth]] or a [[scroll of scare monster]].{{refsrc|src/monmove.c|154|version=NetHack 3.6.7}}

===Shapeshifting===
All vampires are [[undead]] that are highly averse to [[silver]]. They are [[shapeshifter]]s that can [[polymorph]] at will into [[vampire bat]]s or [[fog cloud]]s, while vampire lords and Vlad the Impaler can additionally shapeshift into [[wolves]].{{refsrc|src/mon.c|3379|nethack=3.6.7}}{{refsrc|src/mon.c|3385|nethack=3.6.7}} Vampires often turn into their animal forms when outside of the hero's sight, and shift into fog cloud form to flow under locked or inaccessible [[door]]s{{refsrc|src/mon.c|3340|nethack=3.6.7}}&mdash;they will also shift to their other forms while healthy, and shift back to their base form if their HP is low enough.{{refsrc|src/mon.c|3319|nethack=3.6.7}} Polymorphing a vampire will cause them to take on one of their other forms rather than become a new monster, unless they are a monster that became a vampire via [[polymorphitis]].{{refsrc|src/mon.c|3849|nethack=3.6.7}} Vampires retain all of their traits while they are shifted into other forms unless a trait from that form would override a base trait, e.g. a normally-inediate vampire can eat food while in vampire bat form, and is still weak to silver.

If a vampire is killed in any of their shifted forms, including by [[stoning]], they will resurrect in vampire form.{{refsrc|src/mon.c|2190|nethack=3.6.7|comment=<code>if (!vamp_stone(mdef))</code> is used to exclude shifted vampires from instant death by stoning}} Vlad the Impaler will not shapeshift if he is carrying the [[Candelabrum of Invocation]].{{refsrc|src/mon.c|3375|nethack=3.6.7|comment=If he does not have the Candelabrum, Vlad falls through to the vampire lord case}}

===Polymorphing into a vampire===
A hero that is polymorphed into a vampire of any kind can use the [[Monster (command)|#monster]] [[extended command]] to shift into vampire bat or fog cloud form, or wolf form if they are a vampire lord:{{refsrc|src/cmd.c|722|nethack=3.6.7}}{{refsrc|src/polyself.c|396|nethack=3.6.7}}{{refsrc|src/polyself.c|535|nethack=3.6.7}}{{refsrc|src/polyself.c|788|nethack=3.6.7}}{{refsrc|src/polyself.c|1530|nethack=3.6.7}} the form is chosen at random, and [[polymorph control]] allows them to choose the desired form or decline; once transformed, they cannot shift back since the ability is tied to the vampire form.

Heroes polymorphed into the form of any vampire monster are [[Warned of monster type|warned of any]] [[human or elf]] monsters on the current level.{{refsrc|src/polyself.c|1867|nethack=3.6.7}}{{refsrc|src/end.c|517|version=NetHack 3.6.7}} When [[engraving]] in their base form, they will "scrawl in blood" rather than "write in the dust". A hero in vampire form will be referred to as "dark lady" or "dark lord" by [[shopkeeper]]s.{{refsrc|src/shk.c|2739|nethack=3.6.7}}

{{upcoming|3.7.0|Per {{commit|a27ca52b0354b58e2f498c21865f18d725e75480}}, a hero polymorphed into a vampire that shifts into bat or fog cloud form can use #monster in those forms to shapeshift again.}}

==Messages==
{{main|Talking to vampires}}
{{message|You don't have a reflection.|You applied a mirror at yourself while in the form of a vampire, including being shifted into an animal or fog cloud from that form.}}
{{message|<The vampire> doesn't have a reflection.|You applied a mirror at a vampire, including one shifted into animal or fog cloud form.}}

==Variants==
===SLASH'EM===
In [[SLASH'EM]], vampires are defined by the <tt>'''M2_VAMPIRE'''</tt> [[monster attribute]] flag in <tt>[[Source:SLASH'EM_0.0.7E7F3/monst.c|monst.c]]</tt>, and now include the vampire bat as well as all new and returning monsters in the vampire monster class.{{refsrc|mondata.h|93|version=SLASH'EM 0.0.7E7F3}}

==References==
<references/>
{{nethack-367}}
[[Category:Properties]]