refactor(engine-ecs): move & rename component::Sequence to bundle::Bundle

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..89e0cc4
--- /dev/null
+++ b/engine-ecs/src/bundle.rs
@@ -0,0 +1,40 @@
+use seq_macro::seq;
+
+use crate::component::{IntoParts, Parts};
+use crate::util::Array;
+
+pub trait Bundle
+{
+    type PartsArray: Array<Parts>;
+
+    fn cnt(&self) -> usize;
+
+    fn into_parts_array(self) -> Self::PartsArray;
+}
+
+macro_rules! gen_tuple_impls {
+    ($c: tt) => {
+        seq!(I in 0..$c {
+            impl<#(IntoCompParts~I: IntoParts,)*> Bundle for (#(IntoCompParts~I,)*)
+            {
+                type PartsArray = [Parts; $c];
+
+                fn cnt(&self) -> usize
+                {
+                    $c
+                }
+
+                fn into_parts_array(self) -> Self::PartsArray
+                {
+                    [#({
+                        self.I.into_parts()
+                    },)*]
+                }
+            }
+        });
+    };
+}
+
+seq!(C in 0..17 {
+    gen_tuple_impls!(C);
+});