Struct nano_ecs::MaskStorage

pub struct MaskStorage {
    pub masks: Vec<(u64, u64)>,
    pub offsets: Vec<usize>,
}

Stores masks efficiently and allows fast iteration.

Fields

masks: Vec<(u64, u64)>

Stores (active, initial) masks.

offsets: Vec<usize>

Stores the offsets of the mask.

Implementations

impl MaskStorage

pub fn new() -> MaskStorage

Creates a new mask storage.

pub fn optimize(&mut self, n: usize) -> Vec<usize>

Sorts optimally and returns a sort to update entity slices and components.

pub fn next(
    &self,
    mask_pat: u64,
    i: &mut usize,
    n: usize
) -> Option<(usize, usize)>

Gets the next range of entities with active mask pattern.

pub fn mask_of(&self, cid: usize) -> u64

Returns the active mask of component id.

pub fn init_mask_of(&self, id: usize) -> u64

Returns the initial mask of entity id.

pub fn both_masks_of(&self, id: usize) -> (u64, u64)

Returns both active and initial mask of entity id.

pub fn push(&mut self, mask: u64, id: usize)

Pushes a new mask.

pub fn update(&mut self, mask: u64, id: usize, n: usize)

Updates a mask for an entity.