Struct EtdDispatch 

pub struct EtdDispatch {
    pub wait_weight: f64,
    pub delay_weight: f64,
    pub door_weight: f64,
}

Estimated Time to Destination (ETD) dispatch algorithm.

Industry-standard algorithm for modern elevator systems. For each pending call, evaluates every elevator and assigns the one that minimizes total cost: (time to serve the new rider) + (delay imposed on all existing riders) + (door/loading overhead).

Cost model

cost = wait_weight * travel_time + delay_weight * existing_rider_delay + door_weight * estimated_door_overhead + direction_bonus

Rider delay is computed from actual route destinations of riders currently aboard each elevator.

Fields

wait_weight: f64

Weight for travel time to reach the calling stop.

delay_weight: f64

Weight for delay imposed on existing riders.

door_weight: f64

Weight for door open/close overhead at intermediate stops.

Implementations

impl EtdDispatch

pub const fn new() -> Self

Create a new EtdDispatch with default weights.

Defaults: wait_weight = 1.0, delay_weight = 1.0, door_weight = 0.5.

pub const fn with_delay_weight(delay_weight: f64) -> Self

Create with a single delay weight (backwards-compatible shorthand).

Sets wait_weight = 1.0 and door_weight = 0.5.

pub const fn with_weights( wait_weight: f64, delay_weight: f64, door_weight: f64, ) -> Self

Create with fully custom weights.

Trait Implementations

impl Default for EtdDispatch

fn default() -> Self

Returns the “default value” for a type.

impl DispatchStrategy for EtdDispatch

fn decide( &mut self, _elevator: EntityId, _elevator_position: f64, _group: &ElevatorGroup, _manifest: &DispatchManifest, _world: &World, ) -> DispatchDecision

Decide for a single elevator.

fn decide_all( &mut self, elevators: &[(EntityId, f64)], group: &ElevatorGroup, manifest: &DispatchManifest, world: &World, ) -> Vec<(EntityId, DispatchDecision)>

Decide for all idle elevators in a group. Default: calls decide() per elevator.

fn notify_removed(&mut self, _elevator: EntityId)

Notify the strategy that an elevator has been removed.