Struct de_combat::sightline::LineOfSight

pub(crate) struct LineOfSight<'w, 's> {
    terrain: TerrainCollider<'w, 's>,
    entities: SpatialQuery<'w, 's, Entity>,
}

Fields

terrain: TerrainCollider<'w, 's>

entities: SpatialQuery<'w, 's, Entity>

Implementations

impl<'w, 's> LineOfSight<'w, 's>

pub(crate) fn sight( &self, ray: &Ray, max_toi: f32, observer: Entity ) -> Observation

Looks into a direction up until some furthest point.

Arguments

• ray - gives the direction to look.

• max_toi - limits the maximum observable distance. The furthest observable point is given by ray.origin * max_toi.

• observer - the entity making the observation. This is needed so the entity doesn’t observe itself.

Trait Implementations

impl SystemParam for LineOfSight<'_, '_>

type State = FetchState

Used to store data which persists across invocations of a system.

type Item<'w, 's> = LineOfSight<'w, 's>

The item type returned when constructing this system param. The value of this associated type should be Self, instantiated with new lifetimes.

fn init_state(world: &mut World, system_meta: &mut SystemMeta) -> Self::State

Registers any [World] access used by this [SystemParam] and creates a new instance of this param’s State.

fn new_archetype( state: &mut Self::State, archetype: &Archetype, system_meta: &mut SystemMeta )

For the specified [Archetype], registers the components accessed by this [SystemParam] (if applicable).

fn apply(state: &mut Self::State, system_meta: &SystemMeta, world: &mut World)

Applies any deferred mutations stored in this [SystemParam]’s state. This is used to apply Commands during apply_deferred.

unsafe fn get_param<'w, 's>( state: &'s mut Self::State, system_meta: &SystemMeta, world: UnsafeWorldCell<'w>, change_tick: Tick ) -> Self::Item<'w, 's>

Creates a parameter to be passed into a SystemParamFunction.

impl<'w, 's> ReadOnlySystemParam for LineOfSight<'w, 's>

where TerrainCollider<'w, 's>: ReadOnlySystemParam, SpatialQuery<'w, 's, Entity>: ReadOnlySystemParam,