Allow translation of quest messages from CSV

Translator can provide an Internal_Quests CSV file with translations of one or more quest messages.
This process is simple to use and decouples translation of message from quest script.

Assets/Scripts/Game/Questing/Message.cs

@@ -1,4 +1,4 @@
-// Project:         Daggerfall Unity
+// Project:         Daggerfall Unity
 // Copyright:       Copyright (C) 2009-2022 Daggerfall Workshop
 // Web Site:        http://www.dfworkshop.net
 // License:         MIT License (http://www.opensource.org/licenses/mit-license.php)
@@ -138,6 +138,17 @@ public void LoadMessage(int id, string[] source)
             variants.Add(variant);
         }
 
+        /// <summary>
+        /// Replace a message with new source lines (e.g. from translation data).
+        /// </summary>
+        /// <param name="id">ID of message.</param>
+        /// <param name="source">Array of source lines in message.</param>
+        public void ReplaceMessage(int id, string[] source)
+        {
+            variants.Clear();
+            LoadMessage(id, source);
+        }
+
         /// <summary>
         /// Gets text tokens for this message.
         /// Will return a random variant if variant = -1 and more than one variant exists.

Assets/Scripts/Game/Questing/Quest.cs

@@ -18,6 +18,7 @@
 using DaggerfallWorkshop.Game.Items;
 using DaggerfallWorkshop.Game.UserInterfaceWindows;
 using FullSerializer;
+using DaggerfallWorkshop.Localization;
 
 namespace DaggerfallWorkshop.Game.Questing
 {
@@ -672,11 +673,13 @@ public Message GetMessage(int messageID)
             else
                 return null;
 
-            // TODO: Attempt to get localized text for message
+            // Attempt to get localized text for message
+            string localizedString;
             string key = string.Format("{0}.{1}", QuestName, messageID.ToString());
-            string localizedText = TextManager.Instance.GetLocalizedText(key, TextCollections.TextQuests);
-            if (!string.IsNullOrEmpty(localizedText))
+            if (TextManager.Instance.TryGetLocalizedText(TextCollections.TextQuests, key, out localizedString))
             {
+                string[] lines = localizedString.Split('\n');
+                result.ReplaceMessage(messageID, lines);
             }
 
             return result;

Assets/Scripts/Game/TextManager.cs

@@ -387,6 +387,19 @@ public string GetLocalizedEnemyName(int enemyID)
             }
         }
 
+        /// <summary>
+        /// Tries to gets text value from localization in TextProvider.
+        /// Will use current locale if available in collection.
+        /// </summary>
+        /// <param name="collection">Enum value to lookup collection name in TextManager.</param>
+        /// <param name="key">Key of text in table.</param>
+        /// <param name="localizedString">Result of lookup if found.</param>
+        /// <returns>True if text found, otherwise false.</returns>
+        public bool TryGetLocalizedText(TextCollections collection, string key, out string localizedString)
+        {
+            return TryGetLocalizedText(GetRuntimeCollectionName(collection), key, out localizedString);
+        }
+
         #endregion
 
         #region Private Localized Text Methods