Struct RankContext 

#[non_exhaustive]
pub struct RankContext<'a> {
    pub car: EntityId,
    pub stop: EntityId,
    pub group: &'a ElevatorGroup,
    pub manifest: &'a DispatchManifest,
    pub world: &'a World,
}

Context passed to DispatchStrategy::rank.

Bundles the per-call arguments into a single struct so future context fields can be added without breaking existing trait implementations.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

car: EntityId

The elevator being evaluated.

stop: EntityId

The stop being evaluated as a candidate destination.

group: &'a ElevatorGroup

The dispatch group this assignment belongs to.

manifest: &'a DispatchManifest

Demand snapshot for the current dispatch pass.

world: &'a World

Read-only world state.

Implementations

impl RankContext<'_>

pub fn car_position(&self) -> f64

Position of car along the shaft axis.

Returns 0.0 for an entity that has no Position component (which would never reach this method through normal dispatch — compute_assignments filters out cars without positions upstream — but the defensive default protects custom callers). Derived from world on each call: the dispatch loop never moves elevators between rank calls, so re-deriving is free, and skipping the duplicate field eliminates the synchronisation risk of the old shape.

pub fn stop_position(&self) -> f64

Position of stop along the shaft axis.

Returns 0.0 for an entity that has no Stop component (same rationale as car_position).

Trait Implementations

impl Debug for RankContext<'_>

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

Formats the value using the given formatter.