ItemComponent syncing fixes:

- Relay and lightcomponent states are synced (otherwise clients won't be notified if the state is, for example, toggled by a signal from a button).
- Clients don't play door sounds if a signal attempts to set the state to the same value as the predicted state, but DO play if a correction from the server changes the state from the predicted one.
- Clients are notified if a reactor receives a shutdown signal.
- Powercontainer updates are sent if the charge changes by 1%, not by 1 unit.

Subsurface/Source/Items/Components/Door.cs

@@ -500,10 +500,8 @@ namespace Barotrauma.Items.Components
 
         public void SetState(bool open, bool isNetworkMessage, bool sendNetworkMessage = false)
         {
-
             if (isStuck || isOpen == open) return;
 
-
             if (GameMain.Client != null && !isNetworkMessage)
             {
                 //clients can "predict" that the door opens/closes when a signal is received
@@ -511,14 +509,15 @@ namespace Barotrauma.Items.Components
                 //the prediction will be reset after 1 second, setting the door to a state
                 //sent by the server, or reverting it back to its old state if no msg from server was received
 
-                PlaySound(ActionType.OnUse, item.WorldPosition);
+                if (open != predictedState) PlaySound(ActionType.OnUse, item.WorldPosition);
 
                 predictedState = open;
                 resetPredictionTimer = CorrectionDelay;
+                
             }
             else
             {
-                if (!isNetworkMessage) PlaySound(ActionType.OnUse, item.WorldPosition);
+                if (!isNetworkMessage || open != predictedState) PlaySound(ActionType.OnUse, item.WorldPosition);
 
                 isOpen = open;
             }