Struct LightGate 

pub struct LightGate {
    pub lit_brightness: u8,
    pub softness: u8,
    pub emissive_colors: Vec<Rgb>,
}

Decision 5 — light gates vision: a cell only reaches full Visible intensity when its surface is lit. Samples the baked brightness byte (colour high byte) of the first solid voxel scanning down from eye_top to the deck floor; emissive colour keys count as fully lit anywhere in that scan. Dynamic point lights are not sampled in v1.

Fields

lit_brightness: u8

Baked-brightness byte at/above which the cell is fully lit (bakes centre around 0x80 neutral).

softness: u8

Soft knee below the threshold: brightness in [lit_brightness - softness, lit_brightness] scales visibility linearly. 0 = hard cut.

emissive_colors: Vec<Rgb>

Colour keys (brightness-stripped, the engine’s colour→material map convention) treated as self-lit — emissive strips keep their cell visible in a pitch-dark corridor.

Implementations

impl LightGate

pub fn lit_factor(&self, b: u8) -> f32

Visibility factor 0..=1 for a surface of baked brightness b.

Trait Implementations

impl Clone for LightGate

fn clone(&self) -> LightGate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LightGate

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

Formats the value using the given formatter.

impl PartialEq for LightGate

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LightGate