Struct Chaser 

pub struct Chaser {
    last_search_tgt: Option<Vec3<f32>>,
    route: Option<(Route, bool, Vec3<f32>)>,
    astar: Option<(Astar<Node, FxBuildHasher>, Vec3<f32>)>,
    flee_from: Option<Vec3<f32>>,
    path_length: PathLength,
    path_state: PathState,
    last_update_time: Option<Time>,
    recent_states: VecDeque<(Time, Vec3<f32>, Vec3<f32>)>,
}

A self-contained system that attempts to chase a moving target, only performing pathfinding if necessary

Fields

last_search_tgt: Option<Vec3<f32>>

route: Option<(Route, bool, Vec3<f32>)>

bool indicates whether the Route is a complete route to the target

Vec3 is the target end pos

astar: Option<(Astar<Node, FxBuildHasher>, Vec3<f32>)>

We use this hasher (FxHash) because: (1) we don’t care about DDOS attacks (We can use FxHash); (2) we want this to be constant across compiles because of hot-reloading (Ruling out AAHash);

The Vec3 is the astar’s start position.

flee_from: Option<Vec3<f32>>

path_length: PathLength

Whether to allow consideration of longer paths, npc will stand still while doing this.

path_state: PathState

The current state of the path.

last_update_time: Option<Time>

The last time the chase method was called.

recent_states: VecDeque<(Time, Vec3<f32>, Vec3<f32>)>

(position, requested walk dir)

Implementations

impl Chaser

fn stuck_check( &mut self, pos: Vec3<f32>, bearing: Vec3<f32>, speed: f32, time: &Time, ) -> (Vec3<f32>, f32, bool)

fn reset(&mut self)

pub fn chase<V>( &mut self, vol: &V, pos: Vec3<f32>, vel: Vec3<f32>, tgt: Vec3<f32>, traversal_cfg: TraversalConfig, time: &Time, ) -> Option<(Vec3<f32>, f32, bool)>

where V: BaseVol<Vox = Block> + ReadVol,

Returns bearing and speed Bearing is a Vec3<f32> dictating the direction of movement Speed is an f32 between 0.0 and 1.0

pub fn get_route(&self) -> Option<&Route>

pub fn last_target(&self) -> Option<Vec3<f32>>

pub fn state(&self) -> (PathLength, PathState)

pub fn last_update_time(&self) -> Time

Trait Implementations

impl Clone for Chaser

fn clone(&self) -> Chaser

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Chaser

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

Formats the value using the given formatter.

impl Default for Chaser

fn default() -> Chaser

Returns the “default value” for a type.