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40d:Building

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A building is a structure that can be placed from the build menu. Some buildings are made with furniture from a workshop, which can then be made into rooms. Building tasks and preferences are changed with the building tasks/prefs command q.

Building Technicalities

This section is valid as of version v0.28.181.40d

The current system works something like this: Tiles can have one of three states, wall, floor, and empty space, along with some attributes, like what items, buildings and constructions are in them, as well as their material. Toady hasn't implemented constructions that actually act as terrain, they are merely part of a "construction" attribute.[Verify] When you build a down stair over a terrain down stair, for example, the down stair is added as a "construction" attribute. Tiles with a construction attribute of a tile type (as in wall/floor/empty space) identical to their terrain counterpart will hide the terrain counterpart, both in the view tile screen and when building something like a workshop over it, otherwise the construction simply imitates it's terrain counterpart.

The reason you can't build a wall on a constructed floor is that though the constructed floor is supposed to only overlap it's terrain counterpart, DF doesn't allow for having more than one construction in a tile, hence there's a conflict. Walls are a special case, you simply can't build anything in them, and you can only build floors, walls, and a few other buildings like wells in empty space. Constructed walls have some kind of floor on top of them which is linked to the wall, it seems that the wall-floors ARE constructions, but they don't overlap anything and don't conflict with other structures. It was likely a quick hack by Toady.[Verify] Up/Down Stairs are identical to Down Stairs, as far as what can be built on them is concerned.

The table below details which building and constructions will prevent the construction of certain other buildings and constructions, since the system isn't always consistent. This table isn't necessarily complete, there's probably more buildings which are inconsistent.

Legend

Yes Constructions can coexist
No Constructions conflict
!! Construction conflict, building in the tile will completely overwrite it
X Not vertically supported by construction/terrain
Z Not horizontally supported by construction/terrain
? Untested, undetermined, or not applicable
Workshop Other buildings Natural Constructed Open Space
Floor Up Stair Down Stair Up Slope Down Slope Floor Up Stair Down Stair Up Ramp Down Ramp
Workshop No(XZ) No(XZ) Yes(X?) No(XZ) No(??) No(??) No(??) Yes(??) No(??) No(??) No(??) No(??) No(??)
Other Buildings No(??) No(??) Yes(??) No(??) No(??) No(??) No(??) Yes(??) No(??) No(??) No(??) No(??) No(??)
Constructed Floor No(??) No(??) Yes(??) Yes(??) Yes(??) Yes(??) Yes(??) No(??) No(??) No(??) No(??) Yes(XZ) Yes(??)
Constructed Wall No(??) Yes(??) Yes(??) !!(??) Yes(??) Yes(??) Yes(??) No(??) No(??) No(??) No(??) Yes(XZ) Yes(??)
Constructed Up Stair No(??) No(??) Yes(??) Yes(??) Yes(??) Yes(??) Yes(??) No(??) No(??) No(??) No(??) Yes(XZ) Yes(??)
Constructed Down Stair No(??) No(??) Yes(Z) No(??) Yes(??) No(??) No(??) No(??) No(??) No(??) No(??) No(??) Yes(??)*
Up/Down Stair No(??) No(??) Yes(??) No(??) Yes(??) No(??) No(??) No(??) No(??) No(??) No(??) No(??) Yes(??)*
Ramp No(??) No(??) Yes(??) Yes(??) Yes(??) Yes(??) Yes(??) No(??) No(??) No(??) No(??) Yes(XZ) Yes(??)
  • note that constructed down and up/down stairs must be constructed 1 z-level above an existing up stair if you wish to build them in open space.

List of buildings


Rooms
Furniture
Animal trapAnvilArmor standBedBinBucketCabinetCageCoffinContainerRestraintSeatStatueTableWeapon rack

Access
DoorFloodgateBarsGrateFloor hatchBridgeRoadWindow
Constructions
Machine & Trap parts
Other Buildings
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