DF2014:Siege operator

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Siege operator
Association  
Profession Engineer
Job Title Siege operator
Labor Siege operating
Tasks
  • Load siege weapons
  • Fire siege weapons
Workshop
Attributes
  • Strength
  • Toughness
  • Endurance
  • Analytical Ability
  • Focus
  • Spatial Sense
This article is about the current version of DF.

Siege operators are responsible for manning siege weapons, loading them with any available ammunition, and firing on command or at will. A sufficiently skilled siege operator will always fire them perfectly straight (to the north, south, east, or west), never veering off to the sides.

This is a task sometimes delegated to peasants as a cheap labor, as it can get them skilled swiftly. Catapults are also sometimes used to destroy unwanted stone.

Siege operators cannot "aim" sideways - they always try to fire perfectly straight, but if they're unskilled there's a chance that the shot will "go wild" and veer off to either side by a random amount. In the case of catapults, however, these "wild" shots will actually calculate their arc height based on whatever enemy units are present off to that side (rather than based on what would've been directly ahead).

As for the actual amount of variance, siege engines aim at a location exactly 60 tiles away and up to 10 tiles to either side (if the shot is "unskilled"), which works out to a 19 degree spread (9.5 degrees to each side). As of version 0.47.04, the game generates 3 random numbers from 0 to 14 and checks if any of them are less than the unit's effective Siege Operator skill level (where Dabbling is 0 and Legendary is 15, and status ailments such as Nausea/Winded/Stunned/Fever/etc. can each reduce the level by as much as 50%) to see if the sideways drift should be eliminated. This works out to the following probabilities:

Level Accuracy
0 Dabbling 0%
1 Novice 18.7%
2 Adequate 34.9%
3 Competent 48.8%
4 Skilled 60.6%
5 Proficient 70.4%
6 Talented 78.4%
7 Adept 84.8%
8 Expert 89.8%
9 Professional 93.6%
10 Accomplished 96.3%
11 Great 98.1%
12 Master 99.2%
13 High Master 99.76%
14 Grand Master 99.97%
15 Legendary 100%

While viewing a dwarf's general stats, this skill is grouped with the combat skills instead of the typical labor skills.