1 files changed, 40 insertions, 0 deletions
diff --git a/engine-ecs/src/bundle.rs b/engine-ecs/src/bundle.rs
new file mode 100644
index 0000000..4c13599
--- /dev/null
+++ b/engine-ecs/src/bundle.rs
@@ -0,0 +1,40 @@
+use seq_macro::seq;
+
+use crate::component::{IntoParts as IntoComponentParts, Parts as ComponentParts};
+
+pub trait Bundle: 'static
+{
+    fn iter_component_parts(self) -> impl Iterator<Item = ComponentParts>;
+}
+
+macro_rules! gen_tuple_impls {
+    ($c: tt) => {
+        seq!(I in 0..$c {
+            impl<#(Bundle~I: Bundle,)*> Bundle for (#(Bundle~I,)*)
+            {
+                fn iter_component_parts(self) -> impl Iterator<Item = ComponentParts>
+                {
+                    let parts = [].into_iter();
+
+                    #(
+                        let parts = parts.chain(self.I.iter_component_parts());
+                    )*
+
+                    parts
+                }
+            }
+        });
+    };
+}
+
+seq!(C in 0..17 {
+    gen_tuple_impls!(C);
+});
+
+impl<T: IntoComponentParts + 'static> Bundle for T
+{
+    fn iter_component_parts(self) -> impl Iterator<Item = ComponentParts>
+    {
+        [self.into_parts()].into_iter()
+    }
+}