feat(ecs): add event trait

1 files changed, 24 insertions, 0 deletions

diff --git a/ecs/src/event.rs b/ecs/src/event.rs
new file mode 100644
index 0000000..0cf6da7
--- /dev/null
+++ b/ecs/src/event.rs
@@ -0,0 +1,24 @@
+use std::any::TypeId;
+use std::fmt::Debug;
+use std::hash::Hash;
+
+pub trait Event: Debug + 'static
+{
+    fn id(&self) -> Id;
+}
+
+/// The ID of a [`Event`].
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct Id
+{
+    inner: TypeId,
+}
+
+impl Id
+{
+    /// Returns the id of a [`Event`];
+    pub fn of<EventT: Event>() -> Self
+    {
+        Self { inner: TypeId::of::<EventT>() }
+    }
+}