Module units 

Distance, angle, mass and time newtypes and their unit conversions.

The game mixes several distance units: real meters, GameParams BigWorld units (1 unit = 30 m), replay world units (1 unit = 15 m, what packet positions and radii are in), ship-model units (1 unit = 15 m, used by hull geometry), plus kilometers and millimeters. These newtypes keep units honest at the type level; cross-unit arithmetic and comparison convert to a common unit.

BigWorldDistance and WorldDistance are two different spaces that a name alone will not keep apart, and they differ by exactly 2. Read each type’s doc before reaching for either.

Degrees and Radians serve the same purpose for angles: GameParams states ricochet, normalization and impact angles in degrees, while every trigonometric step wants radians.

Structs

BigWorldDistance

Distance in the coordinate units GameParams uses (1 unit = 30 meters): consumable distShip/distTorpedo, projectile maxDist, and the other range fields read off the ship dict.

Degrees

An angle in degrees. GameParams states every angle in degrees.

Kilograms

Mass in kilograms.

Km

Distance in kilometers.

Meters

Distance in meters.

MetersPerSecond

Speed in meters per second (shell muzzle velocity).

Millimeters

Distance in millimeters.

Radians

An angle in radians. Trigonometry is only defined on this type, so a value in degrees cannot reach cos/sin without an explicit conversion.

Seconds

A duration in seconds.

ShipModelDistance

Distance in ship-model coordinate units (1 unit = 15 meters). Hull geometry uses this space: .visual node matrices, the .skel_ext nodes hung off them, and the meshes they position.

WorldDistance

Distance in the coordinate units a replay packet stream is in (1 unit = 15 meters): entity positions, shell impact points, and any offset between two of them.