perf: cache component index in network behavior (#550)

small performance gain in rpcs for objects with lots of network behaviors (such as cubica :) ) Thanks to Punfish who found it.
MirageNet · Jan 26, 2021 · e566545 · e566545
1 parent 1b606c6
commit e566545
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/Assets/Mirror/Runtime/NetworkBehaviour.cs b/Assets/Mirror/Runtime/NetworkBehaviour.cs
@@ -169,19 +169,26 @@ public NetworkIdentity NetIdentity
             }
         }
 
+        private int componentIndex = -1;
         /// <summary>
         /// Returns the index of the component on this object
         /// </summary>
         public int ComponentIndex
         {
             get
             {
+                if (componentIndex >= 0)
+                    return componentIndex;
+
                 // note: FindIndex causes allocations, we search manually instead
                 for (int i = 0; i < NetIdentity.NetworkBehaviours.Length; i++)
                 {
                     NetworkBehaviour component = NetIdentity.NetworkBehaviours[i];
                     if (component == this)
+                    {
+                        componentIndex = i;
                         return i;
+                    }
                 }
 
                 // this should never happen