EntityEvent fixes:

- Clients wait for midround syncing to finish before applying the remote state to connection panels and inventories (because the wires connected to the connection panel or items in the inventory may not exist before the EntitySpawner events have been received).
- Server writes 0 as the projectile ID if the projectile doesn't exist anymore when a Turret event is sent.
- More info in networkevent error messages.

Barotrauma/BarotraumaShared/Source/Items/Components/Signal/ConnectionPanel.cs

@@ -150,11 +150,9 @@ namespace Barotrauma.Items.Components
         {
             foreach (Connection connection in Connections)
             {
-                Wire[] wires = Array.FindAll(connection.Wires, w => w != null);
-                msg.WriteRangedInteger(0, Connection.MaxLinked, wires.Length);
-                for (int i = 0; i < wires.Length; i++)
+                for (int i = 0; i < Connection.MaxLinked; i++)
                 {
-                    msg.Write(wires[i].Item.ID);
+                    msg.Write(connection.Wires[i]?.Item == null ? (ushort)0 : connection.Wires[i].Item.ID);
                 }
             }
         }
@@ -295,52 +293,6 @@ namespace Barotrauma.Items.Components
         public void ServerWrite(NetBuffer msg, Client c, object[] extraData = null)
         {
             ClientWrite(msg, extraData);
-        }
-
-        public void ClientRead(ServerNetObject type, NetBuffer msg, float sendingTime)
-        {
-            List<Wire> prevWires = Connections.SelectMany(c => Array.FindAll(c.Wires, w => w != null)).ToList();
-            List<Wire> newWires = new List<Wire>();
-
-            foreach (Connection connection in Connections)
-            {
-                connection.ClearConnections();
-            }
-
-            foreach (Connection connection in Connections)
-            {
-                int wireCount = msg.ReadRangedInteger(0, Connection.MaxLinked);
-                for (int i = 0; i < wireCount; i++)
-                {
-                    ushort wireId = msg.ReadUInt16();
-
-                    Item wireItem = Entity.FindEntityByID(wireId) as Item;
-                    if (wireItem == null) continue;
-
-                    Wire wireComponent = wireItem.GetComponent<Wire>();
-                    if (wireComponent == null) continue;
-
-                    newWires.Add(wireComponent);
-
-                    connection.Wires[i] = wireComponent;
-                    wireComponent.Connect(connection, false);
-                }
-            }
-
-            foreach (Wire wire in prevWires)
-            {
-                if (wire.Connections[0] == null && wire.Connections[1] == null)
-                {
-                    wire.Item.Drop(null);
-                }
-                //wires that are not in anyone's inventory (i.e. not currently being rewired) can never be connected to only one connection
-                // -> someone must have dropped the wire from the connection panel
-                else if (wire.Item.ParentInventory == null && 
-                    (wire.Connections[0] != null ^ wire.Connections[1] != null))
-                {
-                    wire.Item.Drop(null);
-                }
-            }
-        }        
+        } 
     }
 }