Random vault (UnNetHack)

Random vaults (not to be confused with Vaults) are a part of the level generation formula introduced in UnNetHack.

On half of levels that have at least 1/6 the maximum number of rooms, UnNetHack will attempt to place a vault. After a vault generation attempt, whether or not it was successful, there will be no more attempts to place a vault on that level.

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Possible Vaults

• Normal Random Room

- Exactly what it says on the tin, this vault is just like any randomly generated room

• Fake Delphi

- This 11x9 vault looks a bit like the room the oracle is in - a big room with a small room in the center - Both the room and the subroom are guaranteed to be lit

• Room with a subroom

- This is just a random room with a random subroom

• Big room 1

- This is a random 30x10 room - It has a 75% of having a random normal room as a subroom. This subroom will have a randomly placed door with a 50% chance of a second door

• lava/ice/pool/tree/fountain room

LEVEL:"vlt-%04i"
FLAGS:rndvault
ROOM:"rndvault", random, random, random, (3,3) {
  $terr = TERRAIN: { 'L', 'I', 'P', 'T', '{' }
  SHUFFLE: $terr
   IF [10%] { TERRAIN:(0,0), $terr[0] }
   IF [10%] { TERRAIN:(1,0), $terr[0] }
   IF [10%] { TERRAIN:(2,0), $terr[0] }
   IF [10%] { TERRAIN:(0,1), $terr[0] }
   TERRAIN:(1,1),$terr[0]
   IF [10%] { TERRAIN:(2,1), $terr[0] }
   IF [10%] { TERRAIN:(0,2), $terr[0] }
   IF [10%] { TERRAIN:(1,2), $terr[0] }
   IF [10%] { TERRAIN:(2,2), $terr[0] }
}

• Big room 2

- This 10x17 random vault has 2d3 random hostile monsters inside it

• thin, long, horizontal room

- This 17x3 random vault has 2d3 random hostile monsters inside it

• thin, long, vertical room

- This 3x17 random vault has 2d3 random hostile monsters inside it

• tiny cage, big monster

- This 5x5 random vault is just a random room with a 2x2 subroom filled with items if it is generated on Dungeon Level 1 or 2 - If it is generated on level 3 or lower, that subroom also has a random M, D, O, Z, T, or H and the monster will now be caged in iron bars

• room with dangerous monster and loot

- This randomly sized vault contains a random hostile M, D, O, Z, T, or H - This is a 50% chance of another random hostile M, D, O, Z, T, or H - There is an additional 25% of another random M, D, O, Z, T, or H. This one isn't guaranteed to be hostile - There is a random object, 75% chance of an object, 50% chance of an object, 25% chance of an object, and 10% chance of an object - All of these probabilities are calculated independently of each other

• boulder room

- This otherwise normal room contains 1d6+3 boulders, and 1d4 rolling boulder traps

• spider nest

- This otherwise normal room contains 3d3 webs

• ice room

- This is a normal room, except the floor is replaced by ice

• random cloud/lava/ice/pool/tree room

- This is a normal room, except 30% of the tiles are replaced with cloud, lava, ice, pools, or trees

• buried treasure

- This is an *ordinary* room (instead of a normal random room) - Buried somewhere in the room is a chest filled with 3d4 random objects

• massacre

- This is a normal room filled with bodies from some horrific massacre. - There are 5d5 10% chances to create a random corpse from the following list: '@', "apprentice", "warrior", "ninja", "thug", "hunter", "acolyte", "abbot",

            "page", "attendant", "neanderthal", "chieftain", "student", "wizard", "valkyrie",

"tourist", "samurai", "rogue", "ranger", "priestess", "priest", "monk",

            "knight", "healer", "cavewoman", "caveman", "barbarian", "archeologist"

• statuary

- This is a normal room with 5d5 random statues - There is a 50% chance each for the existence of 3 statue traps

• light source

- This is a normal unlit room - There will be a lit oil lamp sitting in the room (if you get there before it burns out)

• temple of the gods

- There are 3 randomly placed altars in this room, one of each alignment

• Mausoleum

LEVEL:"vlt-%04i"
FLAGS:rndvault
ROOM:"rndvault", random, random, random, (5,5) {
  TERRAIN:(1,1) & (2,1) & (3,1) &
          (1,2) &         (3,2) &
          (1,3) & (2,3) & (3,3), '-'
  IF [50%] {
    $mons = MONSTER: { 'M', 'V', 'L', 'Z' }
    SHUFFLE: $mons
    MONSTER:$mons[0],(2,2), hostile
  } ELSE {
    OBJECT:('%', "corpse"), random, montype:'@'
  }

  IF [20%] {
    $place = { (2,1), (1,2), (3,2), (2,3) }
    SHUFFLE: $place
    TERRAIN: $place[0], 'S'
  }
}

• big room, 1, random type

- This 17x10 room will be a larger version of any type of randomly generated room

• big room, 2 (max. vertical height), filled with fog

- This 10x17 normal room has a lot of clouds in it, plus 2d3 random hostile monsters

• very thin, long, horizontal room

- this 70x3 room has 2d3 random hostile monsters