1 files changed, 11 insertions, 2 deletions
diff --git a/engine-ecs/src/lib.rs b/engine-ecs/src/lib.rs
index b987f65..0d7df79 100644
--- a/engine-ecs/src/lib.rs
+++ b/engine-ecs/src/lib.rs
@@ -225,6 +225,15 @@ impl World
     where
         SoleT: Sole,
     {
+        if self
+            .data
+            .component_storage
+            .get_entity_archetype(SoleT::id())
+            .is_some()
+        {
+            return Err(SoleAlreadyExistsError);
+        }
+
         let name = sole.name();
 
         self.create_ent(
@@ -962,5 +971,5 @@ impl ActionQueue
 }
 
 #[derive(Debug, thiserror::Error)]
-#[error("Sole {0} already exists")]
-pub struct SoleAlreadyExistsError(pub &'static str);
+#[error("Sole already exists")]
+pub struct SoleAlreadyExistsError;