matrix_engine 0.2.4

a small game engine developed by drmatrix
Documentation 
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use std::sync::atomic::AtomicU64;

static COUNTER: AtomicU64 = AtomicU64::new(0);

#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct Entity(u64);

impl Entity {
    pub fn new() -> Self {
        Self(COUNTER.fetch_add(1, std::sync::atomic::Ordering::SeqCst))
    }
}

impl Default for Entity {
    fn default() -> Self {
        Self::new()
    }
}

#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct SystemEntity(u64);

impl SystemEntity {
    pub fn new() -> Self {
        Self(COUNTER.fetch_add(1, std::sync::atomic::Ordering::SeqCst))
    }
}

impl Default for SystemEntity {
    fn default() -> Self {
        Self::new()
    }
}