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Difference between revisions of "v0.34:Pit trap"

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[[Drowning chamber]]s are basically just extra-fancy pit traps that can be filled with [[water]] (or [[magma]]) to drown (or melt) your assailants. A large drowning chamber is a bit of a [[megaprojects|megaproject]], and is a more complicated alternative to a military pit. It's a big enough topic to warrant its own, separate article.
 
[[Drowning chamber]]s are basically just extra-fancy pit traps that can be filled with [[water]] (or [[magma]]) to drown (or melt) your assailants. A large drowning chamber is a bit of a [[megaprojects|megaproject]], and is a more complicated alternative to a military pit. It's a big enough topic to warrant its own, separate article.
  
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{{Category|Guides}}
 
 
{{Category|Fortress defense}}
 
{{Category|Fortress defense}}
 
{{Category|Design}}
 
{{Category|Design}}

Revision as of 11:17, 23 July 2013

v50.12 · v0.47 · v0.34.11 · v0.31 · v0.28 · v0.23
This article is about an older version of DF.
xTATTEREDx  · +FINE+  · *SUPERIOR*  · ≡EXCEPTIONAL≡  · ☼MASTERWORK☼
Part of a number of articles on
Projects
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Basic
Aqueduct • Archery tower • Atom smasher • Danger room • Dam • Garbage dump • Mass pit • Moat • Pit trap • Reservoir• Sally port • Swimming pool • Tower • Tree farm
Advanced
Drowning chamber • Magma piston • Obsidian farm • Pump stack • Silk farm • Water reactor
v · t · e

A pit trap is a type of large and extremely effective trap. In essence, a pit trap is a long corridor leading into your fortress from a secondary entrance, with two bridges linked to levers on either side. It makes use of AI pathfinding; when you come under attack and seal off your main entrance, enemies will look for any additional paths, and find one in your "detour". They will then walk in, and as soon as they cross the first bridge, you pull both levers to raise the bridges and trap the creatures inside. This is one hundred percent effective: raised bridges act as constructed walls, and thus cannot be destroyed by building destroyers. This works equally well both above and below ground, and only takes some mining, some masonry, some architecture, and six mechanisms (two for the levers and four for the links).

Although you can just leave a pitted foe as is, it's much more fun and dwarfy to turn them into something useful. A pitted goblin siege or titan can be used in a large variety of ways, all of them violent. Note that this is a distinct idea from mass pitting, although one can certainly lead into the other.

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A simple pit trap

Militaristic amenities

If you build a bridge in the middle and a second detour, you can trap two enemies with one trap. Simply lower the middle bridge and watch with satisfaction as the remnants of last month's goblin siege fight for their lives against a bloodthristy hydra. To winner goes next month's elven caravan!

You can also use it for organic waste disposal. The more amusing way to do this is to build a bridge so that it can fling useless nobles through a hole in the roof into the dragon's mouth, but the easier way to do it is to build a small holding room, draft them into their own little squad, tell them to move to that point, close the gate behind them, and then let whatever's inside have at it.

A pit with fortifications constructed or dug into its sides can be used for training your marksdwarves on live targets, provided whatever is inside doesn't have a ranged attack of its own. Simply order them to move in behind the fortifications, and they will render whatever is inside into bloody pincushions. If it's something really big, even better; you may want to temporarily ban your military from metal bolts, as weaker wooden and bone bolts means more shots are needed to kill and thus more experience. Because the crossbow skill cannot be trained with danger rooms, a pitted stone or metal titan is a blessing to a properly equipped fortress, as they can be pelted with wooden bolts for eternity without suffering any ill effects.

A pit with fortifications constructed or dug into it from the back can be used to train your siege operators. A couple of floodgates leading into your fortress from the side of the room is fine, and will not block the view of a stack of idle ballistae at the end. This works much like marksdwarf training, except that it such quicker — when the shots actually connect, of course. It also works against everything, as siege equipment has a longer reach then any ranged attack, and is thus (usually) safe to use against enemy bowmen and the like.

All of these design ideas can be combined to build one truly all-purpose trap!


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A more fully featured trap

Drowning chambers

Main article: Drowning chamber

Drowning chambers are basically just extra-fancy pit traps that can be filled with water (or magma) to drown (or melt) your assailants. A large drowning chamber is a bit of a megaproject, and is a more complicated alternative to a military pit. It's a big enough topic to warrant its own, separate article.

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