====== Standard ZDoom units ======

  * **distance** -- mapunits (also called mappixels)
  * **time** -- tics (or seconds in non-gameplay contexts)
  * **angle** -- turns counterclockwise

===== Derived units =====
  * **velocity** -- mapunits per tic
  * **acceleration** -- mapunits per tic^2
  * **gravity** -- as acceleration

Gravity is defined by free fall acceleration, and is measured using the same units as normal acceleration.

===== Non-standard units =====
These units should be converted to standard units before performing any operations with them.

==== Space ====
  * meters, feet, and other nonsense -- Doom doesn't have an accurate scale
  * sv_gravity units (800:1) -- converted to acceleration by dividing by 800
  * JumpZ units -- see [[functions:jumpz2height]]

==== Time ====
  * seconds (35:1)
  * octics (4.375:1)

==== Angles ====
  * degrees (360:1)
  * radians (tau:1)
  * byte angles (256:1)