Struct WorldDistance 

pub struct WorldDistance(/* private fields */);

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.

The 15 is measured, three ways, on the 15.1.0 corpus:

• Hull length. Shell impacts on a ship, rotated into its body frame, reach 8 to 10 units from the hull origin on ships whose bow fire node sits 104 to 128 m out. At 15 m/unit that is 120 to 152 m, just past the bow node and inside a ~135 m half-length. At 30 it would be 240 to 300 m, i.e. half-kilometre ships.
• Hull beam. The same impacts reach 1.1 to 1.6 units abeam, which at 15 m/unit is a 34 to 49 m beam for ships whose real beams are 26 to 38 m. Generous by the few meters an impact point sits proud of the plate; at 30 it would put every beam past 68 m.
• Gun range. The longest shot in a replay, as |target - origin| from the salvo packet, runs 247 to 808 units. At 15 m/unit those are 3.7 to 12.1 km, every one inside the firing ship’s GameParams maxDist. At 30, ten of the twenty-six replays measured put shots beyond their own ship’s maximum range.

A fourth, functional measurement agrees: sweeping the scale used to place shell impacts into hull fire sections, and scoring each against the section the server actually lit, gives a single-peaked curve topping out at 15 to 16.

So this space and ShipModelDistance measure the same, which is why [WORLD_TO_METERS] is defined as [SHIP_TO_METERS]. They are still separate types because they are separate spaces: a world position is not a ship-model coordinate, and only one of the two is anchored by the waterline and dispersion evidence on ShipModelDistance.

Implementations

impl WorldDistance

pub const fn new(v: f32) -> Self

Const constructor for use in static/const contexts.

pub fn value(self) -> f32

pub fn to_meters(self) -> Meters

pub fn to_km(self) -> Km

Trait Implementations

impl Clone for WorldDistance

fn clone(&self) -> WorldDistance

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for WorldDistance

impl Debug for WorldDistance

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for WorldDistance

fn default() -> WorldDistance

Returns the “default value” for a type.

impl From<f32> for WorldDistance

fn from(v: f32) -> Self

Converts to this type from the input type.

impl PartialEq for WorldDistance

fn eq(&self, other: &WorldDistance) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for WorldDistance

fn partial_cmp(&self, other: &WorldDistance) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for WorldDistance