feat(ecs): add support for systems with no params

1 files changed, 4 insertions, 2 deletions

diff --git a/ecs/src/system.rs b/ecs/src/system.rs
index 95ab7a8..ff3437a 100644
--- a/ecs/src/system.rs
+++ b/ecs/src/system.rs
@@ -3,8 +3,8 @@ use std::fmt::Debug;
 use ecs_macros::Component;
 use seq_macro::seq;
 
-use crate::uid::Uid;
 use crate::World;
+use crate::uid::Uid;
 
 pub mod initializable;
 pub mod observer;
@@ -38,6 +38,8 @@ macro_rules! impl_system {
 
                 fn finish(self) -> (TypeErased, Self::Callbacks)
                 {
+                    #![allow(unused)]
+
                     let type_erased = TypeErased {
                         run: Box::new(move |world, metadata| {
                             // SAFETY: The caller of TypeErased::run ensures the lifetime
@@ -57,7 +59,7 @@ macro_rules! impl_system {
     };
 }
 
-seq!(C in 1..16 {
+seq!(C in 0..16 {
     impl_system!(C);
 });