From 769f77dcdb561f848678abe033bf853f1445c40f Mon Sep 17 00:00:00 2001
From: Ullrich Praetz <ullrich@praetz.de>
Date: Wed, 31 Jul 2024 08:22:42 +0200
Subject: [PATCH] ECS - change EntityState to ref readonly struct

---
 src/ECS/Entity/EntityState.cs            |  2 +-
 src/Tests/ECS/Entity/Test_EntityState.cs | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/ECS/Entity/EntityState.cs b/src/ECS/Entity/EntityState.cs
index c7e3a9b0..92ae5541 100644
--- a/src/ECS/Entity/EntityState.cs
+++ b/src/ECS/Entity/EntityState.cs
@@ -4,7 +4,7 @@
 // ReSharper disable once CheckNamespace
 namespace Friflo.Engine.ECS;
 
-public readonly struct EntityState
+public readonly ref struct EntityState
 {
 #region entity getter
     public  bool        IsNull          => archetype == null;
diff --git a/src/Tests/ECS/Entity/Test_EntityState.cs b/src/Tests/ECS/Entity/Test_EntityState.cs
index 942c79ad..f9d407f2 100644
--- a/src/Tests/ECS/Entity/Test_EntityState.cs
+++ b/src/Tests/ECS/Entity/Test_EntityState.cs
@@ -31,12 +31,22 @@ public static void Test_EntityState_getter()
         state = entity.State;
         IsTrue(state.IsNull);
         Throws<NullReferenceException>(() => {
-            _ = state.Tags;
+            GetTags(entity);
         });
         Throws<NullReferenceException>(() => {
-            _ = state.Get<Position>();
+            GetComponent(entity);
         });
     }
+    
+    private static void GetTags(Entity entity) {
+        var state = entity.State;
+        _ = state.Tags;
+    }
+    
+    private static void GetComponent(Entity entity) {
+        var state = entity.State;
+        _ = state.Get<Position>();
+    }
 }
 
 }