Clearance is the unseen game mechanic that controls Characters' needs for space. A character with a higher clearance value sees more clear space around them, and feels less cramped than another character with a low clearance level.
Levels of Clearance
Characters' clearance level is grouped into three categories: spacious, normal, and cramped. Spacious and cramped correspond to thoughts which grant +5 and -5 mood respectively.
The thresholds of total visible clearance are as follows:
|Spacious interior||Greater than 48.5||+5|
|Cramped environment||Less than 21||-5|
There is also a "Very cramped" thought when visible clearance is less than 1, but this is effectively impossible unless a colonist is trapped in a one-by-one room with a structure such as a standing lamp.
Clearance Sight Range
Humanoids take regular looks around their environment. Each time, they look at squares of flooring within their clearance sight range - a radius of 4.9 squares (69 observed squares). Squares outside the room the humanoid is in are not observed.
For each square of flooring, the humanoid looks at every object in that space and determines its passability: Blocked, Walkable, or Standable and Walkable.
For all squares observed in the perspective zone, the humanoid...
- Adds 1 to clearance for a Standable and Walkable square.
- Adds 0.5 to clearance for a Walkable square.
- Does nothing to clearance for a Blocked square.
Once calculated, the clearance value turns into one of the four threshold labels and an appropriate thought is applied.
Some Objects' Effects on Clearance
Here are a few objects' passability:
|Sleeping Spot||Standable and Walkable|
Room stats display
The "space" metric reported by the "room stats display" tool shows the total area of the room, which has no direct effect on colonist mood, but can be useful for comparing rooms. Unlike clearance considerations, it fully includes tiles which can be walked on (such as beds), and all tiles which block movement which are in or adjacent to the room (such as walls and tables).
|extremely spacious||350 or more|
|very spacious||130 to 348|
|spacious||70 to 129|
|rather spacious||55 to 69|
|average size||29 to 54|
|rather tight||13 to 28|
|cramped||1 to 12|
Because clearance is based on the humanoid's perspective, and not the actual size of the room, this creates some unintuitive considerations when laying out a room. For example, a humanoid standing in the corner of an enormous square room will get the "cramped" debuff because they're surrounded on two sides by walls, even if the room itself is very large. This means that whenever possible, you want to construct rooms so that your colonists will stand in the center of the room, and not on the sides or corners of the room, such as by placing workbenches and chairs should in the middle of the room.