gecs 0.3.0

A generated entity component system.
Documentation 
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use seq_macro::seq;

use crate::entity::Entity;
use crate::traits::Archetype;

macro_rules! declare_view_n {
    ($view:ident, $n:literal) => {
        seq!(I in 0..$n {
            pub trait $view<'a, A: Archetype, #(T~I,)*> {
                fn new(index: usize, entity: &'a Entity<A>, #(e~I: &'a mut T~I,)*) -> Self;
            }
        });
    };
}

// Declare entries for up to 16 components.
seq!(N in 1..=16 {
    declare_view_n!(View~N, N);
});

// Declare additional entries for up to 32 components.
#[cfg(feature = "32_components")]
seq!(N in 17..=32 {
    declare_view_n!(View~N, N);
});