refactor(ecs): use phases for system ordering

1 files changed, 15 insertions, 0 deletions

diff --git a/ecs/src/phase.rs b/ecs/src/phase.rs
new file mode 100644
index 0000000..b8660f2
--- /dev/null
+++ b/ecs/src/phase.rs
@@ -0,0 +1,15 @@
+use ecs_macros::Component;
+
+use crate::relationship::{ChildOf, Relationship};
+use crate::static_entity;
+
+#[derive(Debug, Default, Clone, Copy, Component)]
+pub struct Phase;
+
+static_entity!(pub START, (Phase,));
+
+static_entity!(pub PRE_UPDATE, (Phase,));
+
+static_entity!(pub UPDATE, (Phase, <Relationship<ChildOf, Phase>>::new(*PRE_UPDATE)));
+
+static_entity!(pub PRESENT, (Phase, <Relationship<ChildOf, Phase>>::new(*UPDATE)));