From 4ed049573a2beaeac84cd7a8b6b7c43a6abcbe81 Mon Sep 17 00:00:00 2001
From: Syntriax <syntriax@gmail.com>
Date: Tue, 28 Oct 2025 08:35:34 +0300
Subject: [PATCH] feat: client & server behaviours added

---
 Engine.Systems/Network/ClientBehaviour.cs | 16 ++++++++++++++++
 Engine.Systems/Network/ServerBehaviour.cs | 16 ++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 Engine.Systems/Network/ClientBehaviour.cs
 create mode 100644 Engine.Systems/Network/ServerBehaviour.cs

diff --git a/Engine.Systems/Network/ClientBehaviour.cs b/Engine.Systems/Network/ClientBehaviour.cs
new file mode 100644
index 0000000..889de6f
--- /dev/null
+++ b/Engine.Systems/Network/ClientBehaviour.cs
@@ -0,0 +1,16 @@
+using Engine.Core;
+
+namespace Engine.Systems.Network;
+
+/// <summary>
+/// Basic client behaviour that finds the <see cref="INetworkCommunicatorClient"/> in the universe in it's first active frame.
+/// <br/> 
+/// Disclaimer: It implements <see cref="IFirstFrameUpdate"/> and <see cref="ILastFrameUpdate"/> in virtual methods.
+/// </summary>
+public class ClientBehaviour : Behaviour, IFirstFrameUpdate, ILastFrameUpdate
+{
+    public INetworkCommunicatorClient Client { get; private set; } = null!;
+
+    public virtual void FirstActiveFrame() => Client = Universe.FindRequiredBehaviour<INetworkCommunicatorClient>();
+    public virtual void LastActiveFrame() => Client = null!;
+}
diff --git a/Engine.Systems/Network/ServerBehaviour.cs b/Engine.Systems/Network/ServerBehaviour.cs
new file mode 100644
index 0000000..9ffe2eb
--- /dev/null
+++ b/Engine.Systems/Network/ServerBehaviour.cs
@@ -0,0 +1,16 @@
+using Engine.Core;
+
+namespace Engine.Systems.Network;
+
+/// <summary>
+/// Basic server behaviour that finds the <see cref="INetworkCommunicatorServer"/> in the universe in it's first active frame.
+/// <br/> 
+/// Disclaimer: It implements <see cref="IFirstFrameUpdate"/> and <see cref="ILastFrameUpdate"/> in virtual methods.
+/// </summary>
+public class ServerBehaviour : Behaviour, IFirstFrameUpdate, ILastFrameUpdate
+{
+    public INetworkCommunicatorServer Server { get; private set; } = null!;
+
+    public virtual void FirstActiveFrame() => Server = Universe.FindRequiredBehaviour<INetworkCommunicatorServer>();
+    public virtual void LastActiveFrame() => Server = null!;
+}