multiplayer refactor

Runtime/Engine/Code/Network/DataSerializationUtils.cs

@@ -0,0 +1,40 @@
+using System;
+using Unity.Collections;
+using Unity.Collections.LowLevel.Unsafe;
+using Unity.Netcode;
+using UnityEngine.Assertions;
+
+namespace RebootKit.Engine.Network {
+    public static class DataSerializationUtils {
+        public const int k_DefaultMessageSize = 256;
+
+        public static NativeArray<byte> Serialize<TEntity>(TEntity entity,
+                                                           Allocator allocator = Allocator.Temp)
+            where TEntity : ISerializableEntity {
+            int size = entity.GetMaxBytes();
+            if (size < 0) {
+                size = k_DefaultMessageSize;
+            }
+
+            NativeArray<byte> data = new NativeArray<byte>(size, allocator);
+
+            using NetworkBufferWriter writer = new NetworkBufferWriter(data, 0);
+            Assert.IsTrue(writer.WillFit(size));
+
+            if (writer.WillFit(size)) {
+                entity.Serialize(writer);
+                return data;
+            }
+
+            return default;
+        }
+
+        public static void Deserialize<TEntity>(NativeArray<byte> data, ref TEntity entity)
+            where TEntity : ISerializableEntity {
+            using NetworkBufferReader reader = new NetworkBufferReader(data);
+            if (reader.HasNext(data.Length)) {
+                entity.Deserialize(reader);
+            }
+        }
+    }
+}