Cache chat conversations in the lobby and in-game

This preserves the chat content from the lobby and makes it available
in-game, and also makes all chat content available to the end-game
dialog.

OpenRA.Mods.RA/Widgets/Logic/Ingame/LeaveMapLogic.cs

@@ -9,8 +9,9 @@
 #endregion
 
 using System;
-using System.Linq;
 using System.Drawing;
+using System.Linq;
+using OpenRA.Network;
 using OpenRA.Traits;
 using OpenRA.Widgets;
 
@@ -19,13 +20,16 @@ namespace OpenRA.Mods.RA.Widgets
 	class LeaveMapLogic
 	{
 		enum Tab { Objectives, Chat };
-
 		Tab currentTab;
+
+		OrderManager orderManager;
 		bool newChatMessage;
 
 		[ObjectCreator.UseCtor]
-		public LeaveMapLogic(Widget widget, World world)
+		public LeaveMapLogic(Widget widget, World world, OrderManager orderManager)
 		{
+			this.orderManager = orderManager;
+
 			widget.Get<LabelWidget>("VERSION_LABEL").Text = Game.modData.Manifest.Mod.Version;
 
 			var showStats = false;
@@ -70,7 +74,7 @@ namespace OpenRA.Mods.RA.Widgets
 				chatButton.IsHighlighted = () => currentTab == Tab.Chat || (newChatMessage && Game.LocalTick % 50 < 25);
 
 				Game.BeforeGameStart += UnregisterChatNotification;
-				Game.AddChatLine += NotifyNewChatMessage;
+				orderManager.AddChatLine += NotifyNewChatMessage;
 			}
 
 			var statsButton = dialog.Get<ButtonWidget>("STATS_BUTTON");
@@ -130,7 +134,7 @@ namespace OpenRA.Mods.RA.Widgets
 
 		void UnregisterChatNotification()
 		{
-			Game.AddChatLine -= NotifyNewChatMessage;
+			orderManager.AddChatLine -= NotifyNewChatMessage;
 			Game.BeforeGameStart -= UnregisterChatNotification;
 		}
 	}

OpenRA.Mods.RA/Widgets/Logic/IngameChatLogic.cs

@@ -18,6 +18,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 {
 	public class IngameChatLogic
 	{
+		readonly OrderManager orderManager;
 		readonly Ruleset modRules;
 
 		readonly ContainerWidget chatOverlay;
@@ -38,6 +39,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 		[ObjectCreator.UseCtor]
 		public IngameChatLogic(Widget widget, OrderManager orderManager, World world, Ruleset modRules)
 		{
+			this.orderManager = orderManager;
 			this.modRules = modRules;
 
 			chatTraits = world.WorldActor.TraitsImplementing<INotifyChat>().ToList();
@@ -125,7 +127,10 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			chatScrollPanel.RemoveChildren();
 			chatScrollPanel.ScrollToBottom();
 
-			Game.AddChatLine += AddChatLine;
+			foreach (var chatLine in orderManager.ChatCache)
+				AddChatLine(chatLine.Color, chatLine.Name, chatLine.Text, true);
+
+			orderManager.AddChatLine += AddChatLineWrapper;
 			Game.BeforeGameStart += UnregisterEvents;
 
 			CloseChat();
@@ -133,7 +138,7 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 
 		void UnregisterEvents()
 		{
-			Game.AddChatLine -= AddChatLine;
+			orderManager.AddChatLine -= AddChatLineWrapper;
 			Game.BeforeGameStart -= UnregisterEvents;
 		}
 
@@ -156,9 +161,14 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			chatOverlay.Visible = true;
 		}
 
-		public void AddChatLine(Color c, string from, string text)
+		public void AddChatLineWrapper(Color c, string from, string text)
 		{
-			if (!inDialog)
+			AddChatLine(c, from, text, false);
+		}
+
+		void AddChatLine(Color c, string from, string text, bool replayCache)
+		{
+			if (!(inDialog || replayCache))
 				chatOverlayDisplay.AddLine(c, from, text);
 
 			var template = chatTemplate.Clone();
@@ -193,7 +203,8 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			if (scrolledToBottom)
 				chatScrollPanel.ScrollToBottom(smooth: true);
 
-			Sound.PlayNotification(modRules, null, "Sounds", "ChatLine", null);
+			if (!replayCache)
+				Sound.PlayNotification(modRules, null, "Sounds", "ChatLine", null);
 		}
 	}
 }

OpenRA.Mods.RA/Widgets/Logic/LobbyLogic.cs

@@ -84,10 +84,10 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 
 		void CloseWindow()
 		{
+			orderManager.AddChatLine -= AddChatLine;
 			Game.LobbyInfoChanged -= UpdateCurrentMap;
 			Game.LobbyInfoChanged -= UpdatePlayerList;
 			Game.BeforeGameStart -= OnGameStart;
-			Game.AddChatLine -= AddChatLine;
 			Game.ConnectionStateChanged -= ConnectionStateChanged;
 
 			Ui.CloseWindow();
@@ -104,10 +104,10 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			this.skirmishMode = skirmishMode;
 			this.modRules = modRules;
 
+			orderManager.AddChatLine += AddChatLine;
 			Game.LobbyInfoChanged += UpdateCurrentMap;
 			Game.LobbyInfoChanged += UpdatePlayerList;
 			Game.BeforeGameStart += OnGameStart;
-			Game.AddChatLine += AddChatLine;
 			Game.ConnectionStateChanged += ConnectionStateChanged;
 
 			var name = lobby.GetOrNull<LabelWidget>("SERVER_NAME");