From ffc052ded35e9d120978424e60473dbcf21fa171 Mon Sep 17 00:00:00 2001
From: Evan Hemsley <evan@moonside.games>
Date: Thu, 19 Mar 2020 17:26:22 -0700
Subject: [PATCH] fix creating new component index on every set

---
 encompass-cs/Collections/TypedComponentStore.cs | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/encompass-cs/Collections/TypedComponentStore.cs b/encompass-cs/Collections/TypedComponentStore.cs
index a32fea4..fa766b5 100644
--- a/encompass-cs/Collections/TypedComponentStore.cs
+++ b/encompass-cs/Collections/TypedComponentStore.cs
@@ -50,10 +50,13 @@ namespace Encompass
 
         private unsafe void InternalSet(int entityID, TComponent component)
         {
-            var index = _idManager.NextID();
+            if (!indices.ContainsKey(entityID))
+            {
+                indices[entityID] = _idManager.NextID();
+            }
+
             var ptr = Unsafe.AsPointer(ref component);
-            indices[entityID] = index;
-            components[index] = Unsafe.AsRef<TComponent>(ptr);
+            components[indices[entityID]] = Unsafe.AsRef<TComponent>(ptr);
         }
 
         public override bool Remove(int entityID, int priority)
@@ -84,6 +87,10 @@ namespace Encompass
 
         public override void Clear()
         {
+            foreach (var entityID in indices.Keys)
+            {
+                _idManager.Free(entityID);
+            }
             indices.Clear();
             priorities.Clear();
         }