Co-Op Layer

2026-06-01 10:48:18 -07:00
parent 1f647dd5e1
commit e851d5f8e9
29 changed files with 667 additions and 20 deletions
@@ -0,0 +1,49 @@
+using ProjectM.Simulation;
+using Unity.Collections;
+using Unity.Entities;
+using Unity.NetCode;
+using Unity.Networking.Transport;
+using UnityEngine;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Client/thin-client half of the M4 LAN join flow. When the per-world <see cref="ConnectionConfig"/>
+    /// requests <see cref="ConnectionMode.Join"/>, creates a <see cref="NetworkStreamRequestConnect"/>
+    /// entity for the parsed endpoint and clears the request. Runs in both full and thin client worlds so
+    /// the editor auto-host can connect thin clients too. Not Burst-compiled: <c>NetworkEndpoint.TryParse</c>
+    /// takes a managed string and this is a cold path.
+    /// </summary>
+    [WorldSystemFilter(WorldSystemFilterFlags.ClientSimulation | WorldSystemFilterFlags.ThinClientSimulation)]
+    public partial struct ClientConnectionControlSystem : ISystem
+    {
+        public void OnCreate(ref SystemState state)
+        {
+            state.RequireForUpdate<ConnectionConfig>();
+        }
+
+        public void OnUpdate(ref SystemState state)
+        {
+            var cfgRef = SystemAPI.GetSingletonRW<ConnectionConfig>();
+            if (!cfgRef.ValueRO.Requested || cfgRef.ValueRO.Mode != ConnectionMode.Join)
+                return;
+
+            // Clear first so a malformed address does not retry-spam every frame.
+            cfgRef.ValueRW.Requested = false;
+
+            var address = cfgRef.ValueRO.Address;
+            var port = cfgRef.ValueRO.Port;
+            if (!NetworkEndpoint.TryParse(address.ToString(), port, out var endpoint, NetworkFamily.Ipv4))
+            {
+                Debug.LogError($"[ClientConnectionControlSystem] Invalid join address '{address}'.");
+                return;
+            }
+
+            var ecb = new EntityCommandBuffer(Allocator.Temp);
+            var req = ecb.CreateEntity();
+            ecb.AddComponent(req, new NetworkStreamRequestConnect { Endpoint = endpoint });
+            ecb.Playback(state.EntityManager);
+            ecb.Dispose();
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: c274f15ad41814f8d8337f786590313d
@@ -0,0 +1,79 @@
+using ProjectM.Simulation;
+using Unity.Entities;
+using Unity.NetCode;
+using UnityEngine;
+
+namespace ProjectM.Client
+{
+    /// <summary>
+    /// Minimal IMGUI Host / Join (+ IP) panel for the M4 LAN flow — the connection entry point for player
+    /// builds, where there is no editor auto-host. Writes a <see cref="ConnectionConfig"/> request into the
+    /// relevant netcode world(s): <b>Host</b> makes the server world listen and the local client join over
+    /// loopback; <b>Join</b> makes the client world connect to the typed IP. Hides itself once the client
+    /// world has a connection. Direct IP/LAN only — Unity Relay is deferred to a later pass. In the editor
+    /// the <c>EditorAutoHostSystem</c> usually connects first, so this panel just shows "Connected".
+    /// </summary>
+    public class ConnectionUI : MonoBehaviour
+    {
+        [SerializeField] ushort _port = 7979;
+
+        string _ipField = "127.0.0.1";
+
+        void OnGUI()
+        {
+            if (IsClientConnected())
+            {
+                GUILayout.BeginArea(new Rect(10, 10, 220, 26));
+                GUILayout.Label("Net: Connected");
+                GUILayout.EndArea();
+                return;
+            }
+
+            GUILayout.BeginArea(new Rect(10, 10, 240, 150), GUI.skin.box);
+            GUILayout.Label("Project M — LAN co-op");
+
+            // Host is only possible where a server world exists (editor or a ClientServer/host build).
+            if (ClientServerBootstrap.ServerWorld is { IsCreated: true })
+            {
+                if (GUILayout.Button("Host"))
+                {
+                    Seed(ClientServerBootstrap.ServerWorld, ConnectionMode.Host, "0.0.0.0", _port);
+                    Seed(ClientServerBootstrap.ClientWorld, ConnectionMode.Join, "127.0.0.1", _port);
+                }
+                GUILayout.Space(6);
+            }
+
+            GUILayout.Label("Join host IP:");
+            _ipField = GUILayout.TextField(_ipField);
+            if (GUILayout.Button("Join"))
+                Seed(ClientServerBootstrap.ClientWorld, ConnectionMode.Join, _ipField, _port);
+
+            GUILayout.EndArea();
+        }
+
+        static bool IsClientConnected()
+        {
+            var world = ClientServerBootstrap.ClientWorld;
+            if (world is not { IsCreated: true })
+                return false;
+            using var q = world.EntityManager.CreateEntityQuery(ComponentType.ReadOnly<NetworkId>());
+            return !q.IsEmpty;
+        }
+
+        static void Seed(World world, ConnectionMode mode, string address, ushort port)
+        {
+            if (world is not { IsCreated: true })
+                return;
+            var em = world.EntityManager;
+            using var q = em.CreateEntityQuery(ComponentType.ReadWrite<ConnectionConfig>());
+            Entity e = q.IsEmpty ? em.CreateEntity(typeof(ConnectionConfig)) : q.GetSingletonEntity();
+            em.SetComponentData(e, new ConnectionConfig
+            {
+                Mode = mode,
+                Address = address,
+                Port = port,
+                Requested = true,
+            });
+        }
+    }
+}
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: 977a7574cf6ff4898b7e9db6c21368f9