Struct ScanDispatch 

pub struct ScanDispatch { /* private fields */ }

Elevator dispatch using the SCAN (elevator) algorithm.

Each car tracks a sweep direction; stops demanded in that direction receive a positional cost while stops behind are excluded. When nothing remains ahead, the sweep reverses and the car considers the reverse side. Direction and mode are resolved once per pass in DispatchStrategy::prepare_car so ranking is independent of the iteration order over stops.

Implementations

impl ScanDispatch

pub fn new() -> Self

Create a new ScanDispatch with no initial direction state.

Trait Implementations

impl Default for ScanDispatch

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ScanDispatch

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl DispatchStrategy for ScanDispatch

fn prepare_car( &mut self, car: EntityId, car_position: f64, group: &ElevatorGroup, manifest: &DispatchManifest, world: &World, )

Optional hook called once per candidate car, before any rank calls for that car in the current pass.

fn rank(&self, ctx: &RankContext<'_>) -> Option<f64>

Score the cost of sending car to stop. Lower is better.

fn notify_removed(&mut self, elevator: EntityId)

Notify the strategy that an elevator has been removed.

fn builtin_id(&self) -> Option<BuiltinStrategy>

If this strategy is a known built-in variant, return it so Simulation::new can stamp the correct BuiltinStrategy into the group’s snapshot identity.

fn snapshot_config(&self) -> Option<String>

Serialize this strategy’s tunable configuration to a string that restore_config can apply to a freshly-instantiated instance.

fn restore_config(&mut self, serialized: &str) -> Result<(), String>

Restore tunable configuration from a string previously produced by snapshot_config on the same strategy variant. Called by crate::snapshot::WorldSnapshot::restore immediately after BuiltinStrategy::instantiate builds the default instance, so the restore writes over the defaults.

fn pre_dispatch( &mut self, _group: &ElevatorGroup, _manifest: &DispatchManifest, _world: &mut World, )

Optional hook called once per group before the assignment pass.

fn fallback( &mut self, _car: EntityId, _car_position: f64, _group: &ElevatorGroup, _manifest: &DispatchManifest, _world: &World, ) -> DispatchDecision

Decide what an idle car should do when no stop was assigned to it.

impl Serialize for ScanDispatch

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.