Merge pull request #3929 from ScottNZ/translation

Add translation support

OpenRA.FileFormats/FieldLoader.cs

@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
@@ -14,6 +14,7 @@ using System.Drawing;
 using System.Globalization;
 using System.Linq;
 using System.Reflection;
+using System.Text.RegularExpressions;
 
 namespace OpenRA.FileFormats
 {
@@ -38,31 +39,31 @@ namespace OpenRA.FileFormats
 				object val;
 				if (kv.Value != null)
 					val = kv.Value(kv.Key.Name, kv.Key.FieldType, my);
-				else if (!TryGetValueFromYaml(kv.Key.Name, kv.Key.FieldType, my, out val))
+				else if (!TryGetValueFromYaml(kv.Key, my, out val))
 					continue;
 
 				kv.Key.SetValue(self, val);
 			}
 		}
 
-		static bool TryGetValueFromYaml(string fieldName, Type fieldType, MiniYaml yaml, out object ret)
+		static bool TryGetValueFromYaml(FieldInfo field, MiniYaml yaml, out object ret)
 		{
 			ret = null;
-			var n = yaml.Nodes.Where(x => x.Key == fieldName).ToList();
+			var n = yaml.Nodes.Where(x => x.Key == field.Name).ToList();
 			if (n.Count == 0)
 				return false;
 			if (n.Count == 1 && n[0].Value.Nodes.Count == 0)
 			{
-				ret = GetValue(fieldName, fieldType, n[0].Value.Value);
+				ret = GetValue(field.Name, field.FieldType, n[0].Value.Value, field);
 				return true;
 			}
 			else if (n.Count > 1)
 			{
 				throw new InvalidOperationException("The field {0} has multiple definitions:\n{1}"
-					.F(fieldName, n.Select(m => "\t- " + m.Location).JoinWith("\n")));
+					.F(field.Name, n.Select(m => "\t- " + m.Location).JoinWith("\n")));
 			}
 
-			throw new InvalidOperationException("TryGetValueFromYaml: unable to load field {0} (of type {1})".F(fieldName, fieldType));
+			throw new InvalidOperationException("TryGetValueFromYaml: unable to load field {0} (of type {1})".F(field.Name, field.FieldType));
 		}
 
 		public static T Load<T>(MiniYaml y) where T : new()
@@ -80,7 +81,7 @@ namespace OpenRA.FileFormats
 			if (field != null)
 			{
 				if (!field.HasAttribute<FieldFromYamlKeyAttribute>())
-					field.SetValue(self, GetValue(field.Name, field.FieldType, value));
+					field.SetValue(self, GetValue(field.Name, field.FieldType, value, field));
 				return;
 			}
 
@@ -89,7 +90,7 @@ namespace OpenRA.FileFormats
 			if (prop != null)
 			{
 				if (!prop.HasAttribute<FieldFromYamlKeyAttribute>())
-					prop.SetValue(self, GetValue(prop.Name, prop.PropertyType, value), NoIndexes);
+					prop.SetValue(self, GetValue(prop.Name, prop.PropertyType, value, prop), NoIndexes);
 				return;
 			}
 
@@ -98,61 +99,70 @@ namespace OpenRA.FileFormats
 
 		public static T GetValue<T>(string field, string value)
 		{
-			return (T)GetValue(field, typeof(T), value);
+			return (T)GetValue(field, typeof(T), value, null);
 		}
 
-		public static object GetValue(string field, Type fieldType, string x)
+		public static object GetValue(string fieldName, Type fieldType, string value)
 		{
-			if (x != null) x = x.Trim();
+			return GetValue(fieldName, fieldType, value, null);
+		}
+
+		public static object GetValue(string fieldName, Type fieldType, string value, MemberInfo field)
+		{
+			if (value != null) value = value.Trim();
 
 			if (fieldType == typeof(int))
 			{
 				int res;
-				if (int.TryParse(x, out res))
+				if (int.TryParse(value, out res))
 					return res;
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(ushort))
 			{
 				ushort res;
-				if (ushort.TryParse(x, out res))
+				if (ushort.TryParse(value, out res))
 					return res;
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(float))
 			{
 				float res;
-				if (float.TryParse(x.Replace("%", ""),  NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
+				if (float.TryParse(value.Replace("%", ""),  NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
-					return res * (x.Contains('%') ? 0.01f : 1f);
+					return res * (value.Contains('%') ? 0.01f : 1f);
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(decimal))
 			{
 				decimal res;
-				if (decimal.TryParse(x.Replace("%", ""),  NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
+				if (decimal.TryParse(value.Replace("%", ""),  NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
-					return res * (x.Contains('%') ? 0.01m : 1m);
+					return res * (value.Contains('%') ? 0.01m : 1m);
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(string))
-				return x;
+			{
+				if (field != null && field.HasAttribute<TranslateAttribute>())
+					return Regex.Replace(value, "@[^@]+@", m => Translate(m.Value.Substring(1, m.Value.Length - 2)), RegexOptions.Compiled);
+				return value;
+			}
 
 			else if (fieldType == typeof(Color))
 			{
-				var parts = x.Split(',');
+				var parts = value.Split(',');
 				if (parts.Length == 3)
 					return Color.FromArgb(int.Parse(parts[0]).Clamp(0, 255), int.Parse(parts[1]).Clamp(0, 255), int.Parse(parts[2]).Clamp(0, 255));
 				if (parts.Length == 4)
 					return Color.FromArgb(int.Parse(parts[0]).Clamp(0, 255), int.Parse(parts[1]).Clamp(0, 255), int.Parse(parts[2]).Clamp(0, 255), int.Parse(parts[3]).Clamp(0, 255));
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(HSLColor))
 			{
-				var parts = x.Split(',');
+				var parts = value.Split(',');
 
 				// Allow old ColorRamp format to be parsed as HSLColor
 				if (parts.Length == 3 || parts.Length == 4)
@@ -161,21 +171,21 @@ namespace OpenRA.FileFormats
 						(byte)int.Parse(parts[1]).Clamp(0, 255),
 						(byte)int.Parse(parts[2]).Clamp(0, 255));
 
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(WRange))
 			{
 				WRange res;
-				if (WRange.TryParse(x, out res))
+				if (WRange.TryParse(value, out res))
 					return res;
 
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(WVec))
 			{
-				var parts = x.Split(',');
+				var parts = value.Split(',');
 				if (parts.Length == 3)
 				{
 					WRange rx, ry, rz;
@@ -183,12 +193,12 @@ namespace OpenRA.FileFormats
 						return new WVec(rx, ry, rz);
 				}
 
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(WPos))
 			{
-				var parts = x.Split(',');
+				var parts = value.Split(',');
 				if (parts.Length == 3)
 				{
 					WRange rx, ry, rz;
@@ -196,62 +206,62 @@ namespace OpenRA.FileFormats
 						return new WPos(rx, ry, rz);
 				}
 
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(WAngle))
 			{
 				int res;
-				if (int.TryParse(x, out res))
+				if (int.TryParse(value, out res))
 					return new WAngle(res);
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType == typeof(WRot))
 			{
-				var parts = x.Split(',');
+				var parts = value.Split(',');
 				if (parts.Length == 3)
 				{
 					int rr, rp, ry;
-					if (int.TryParse(x, out rr) && int.TryParse(x, out rp) && int.TryParse(x, out ry))
+					if (int.TryParse(value, out rr) && int.TryParse(value, out rp) && int.TryParse(value, out ry))
 						return new WRot(new WAngle(rr), new WAngle(rp), new WAngle(ry));
 				}
 
-				return InvalidValueAction(x, fieldType, field);
+				return InvalidValueAction(value, fieldType, fieldName);
 			}
 
 			else if (fieldType.IsEnum)
 			{
-				if (!Enum.GetNames(fieldType).Select(a => a.ToLower()).Contains(x.ToLower()))
+				if (!Enum.GetNames(fieldType).Select(a => a.ToLower()).Contains(value.ToLower()))
-					return InvalidValueAction(x, fieldType, field);
+					return InvalidValueAction(value, fieldType, fieldName);
-				return Enum.Parse(fieldType, x, true);
+				return Enum.Parse(fieldType, value, true);
 			}
 
 			else if (fieldType == typeof(bool))
-				return ParseYesNo(x, fieldType, field);
+				return ParseYesNo(value, fieldType, fieldName);
 
 			else if (fieldType.IsArray)
 			{
-				if (x == null)
+				if (value == null)
 					return Array.CreateInstance(fieldType.GetElementType(), 0);
 
-				var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
 
 				var ret = Array.CreateInstance(fieldType.GetElementType(), parts.Length);
 				for (int i = 0; i < parts.Length; i++)
-					ret.SetValue(GetValue(field, fieldType.GetElementType(), parts[i].Trim()), i);
+					ret.SetValue(GetValue(fieldName, fieldType.GetElementType(), parts[i].Trim(), field), i);
 				return ret;
 			}
 
 			else if (fieldType == typeof(int2))
 			{
-				var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
 				return new int2(int.Parse(parts[0]), int.Parse(parts[1]));
 			}
 
 			else if (fieldType == typeof(float2))
 			{
-				var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
 				float xx = 0;
 				float yy = 0;
 				float res;
@@ -264,13 +274,13 @@ namespace OpenRA.FileFormats
 
 			else if (fieldType == typeof(Rectangle))
 			{
-				var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
 				return new Rectangle(int.Parse(parts[0]), int.Parse(parts[1]), int.Parse(parts[2]), int.Parse(parts[3]));
 			}
 
 			else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Bits<>))
 			{
-				var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
+				var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
 				var argTypes = new Type[] { typeof(string[]) };
 				var argValues = new object[] { parts };
 				return fieldType.GetConstructor(argTypes).Invoke(argValues);
@@ -279,11 +289,11 @@ namespace OpenRA.FileFormats
 			else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Nullable<>))
 			{
 				var innerType = fieldType.GetGenericArguments().First();
-				var innerValue = GetValue("Nullable<T>", innerType, x);
+				var innerValue = GetValue("Nullable<T>", innerType, value, field);
-				return fieldType.GetConstructor(new []{ innerType }).Invoke(new []{ innerValue });
+				return fieldType.GetConstructor(new[] { innerType }).Invoke(new[] { innerValue });
 			}
 
-			UnknownFieldAction("[Type] {0}".F(x), fieldType);
+			UnknownFieldAction("[Type] {0}".F(value), fieldType);
 			return null;
 		}
 
@@ -312,7 +322,7 @@ namespace OpenRA.FileFormats
 				if (loadUsing.Length != 0)
 					ret[field] = (_1, fieldType, yaml) => loadUsing[0].LoaderFunc(field)(yaml);
 				else if (fromYamlKey.Length != 0)
-					ret[field] = (f, ft, yaml) => GetValue(f, ft, yaml.Value);
+					ret[field] = (f, ft, yaml) => GetValue(f, ft, yaml.Value, field);
 				else if (ignore.Length == 0)
 					ret[field] = null;
 			}
@@ -342,81 +352,24 @@ namespace OpenRA.FileFormats
 				return loaderFuncCache;
 			}
 		}
+
+		public static string Translate(string key)
+		{
+			if (Translations == null || string.IsNullOrEmpty(key))
+				return key;
+
+			string value;
+			if (!Translations.TryGetValue(key, out value))
+				return key;
+
+			return value;
+		}
+
+		public static Dictionary<string, string> Translations = new Dictionary<string, string>();
 	}
 
-	public static class FieldSaver
+	[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
-	{
+	public class TranslateAttribute : Attribute { }
-		public static MiniYaml Save(object o)
-		{
-			var nodes = new List<MiniYamlNode>();
-			string root = null;
-
-			foreach (var f in o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance))
-			{
-				if (f.HasAttribute<FieldFromYamlKeyAttribute>())
-					root = FormatValue(o, f);
-				else
-					nodes.Add(new MiniYamlNode(f.Name, FormatValue(o, f)));
-			}
-
-			return new MiniYaml(root, nodes);
-		}
-
-		public static MiniYaml SaveDifferences(object o, object from)
-		{
-			if (o.GetType() != from.GetType())
-				throw new InvalidOperationException("FieldLoader: can't diff objects of different types");
-
-			var fields = o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance)
-				.Where(f => FormatValue(o, f) != FormatValue(from, f));
-
-			return new MiniYaml(null, fields.Select(f => new MiniYamlNode(f.Name, FormatValue(o, f))).ToList());
-		}
-
-		public static MiniYamlNode SaveField(object o, string field)
-		{
-			return new MiniYamlNode(field, FieldSaver.FormatValue(o, o.GetType().GetField(field)));
-		}
-
-		public static string FormatValue(object v, Type t)
-		{
-			if (v == null)
-				return "";
-
-			// Color.ToString() does the wrong thing; force it to format as an array
-			if (t == typeof(Color))
-			{
-				var c = (Color)v;
-				return "{0},{1},{2},{3}".F(((int)c.A).Clamp(0, 255),
-					((int)c.R).Clamp(0, 255),
-					((int)c.G).Clamp(0, 255),
-					((int)c.B).Clamp(0, 255));
-			}
-
-			// Don't save floats in settings.yaml using country-specific decimal separators which can be misunderstood as group seperators.
-			if (t == typeof(float))
-				return ((float)v).ToString(CultureInfo.InvariantCulture);
-
-			if (t == typeof(Rectangle))
-			{
-				var r = (Rectangle)v;
-				return "{0},{1},{2},{3}".F(r.X, r.Y, r.Width, r.Height);
-			}
-
-			if (t.IsArray)
-			{
-				var elems = ((Array)v).OfType<object>();
-				return elems.JoinWith(",");
-			}
-
-			return v.ToString();
-		}
-
-		public static string FormatValue(object o, FieldInfo f)
-		{
-			return FormatValue(f.GetValue(o), f.FieldType);
-		}
-	}
 
 	public class FieldFromYamlKeyAttribute : Attribute { }
 

OpenRA.FileFormats/FieldSaver.cs

@@ -0,0 +1,93 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2013 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Globalization;
+using System.Linq;
+using System.Reflection;
+
+namespace OpenRA.FileFormats
+{
+	public static class FieldSaver
+	{
+		public static MiniYaml Save(object o)
+		{
+			var nodes = new List<MiniYamlNode>();
+			string root = null;
+
+			foreach (var f in o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance))
+			{
+				if (f.HasAttribute<FieldFromYamlKeyAttribute>())
+					root = FormatValue(o, f);
+				else
+					nodes.Add(new MiniYamlNode(f.Name, FormatValue(o, f)));
+			}
+
+			return new MiniYaml(root, nodes);
+		}
+
+		public static MiniYaml SaveDifferences(object o, object from)
+		{
+			if (o.GetType() != from.GetType())
+				throw new InvalidOperationException("FieldLoader: can't diff objects of different types");
+
+			var fields = o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance)
+				.Where(f => FormatValue(o, f) != FormatValue(from, f));
+
+			return new MiniYaml(null, fields.Select(f => new MiniYamlNode(f.Name, FormatValue(o, f))).ToList());
+		}
+
+		public static MiniYamlNode SaveField(object o, string field)
+		{
+			return new MiniYamlNode(field, FieldSaver.FormatValue(o, o.GetType().GetField(field)));
+		}
+
+		public static string FormatValue(object v, Type t)
+		{
+			if (v == null)
+				return "";
+
+			// Color.ToString() does the wrong thing; force it to format as an array
+			if (t == typeof(Color))
+			{
+				var c = (Color)v;
+				return "{0},{1},{2},{3}".F(((int)c.A).Clamp(0, 255),
+					((int)c.R).Clamp(0, 255),
+					((int)c.G).Clamp(0, 255),
+					((int)c.B).Clamp(0, 255));
+			}
+
+			// Don't save floats in settings.yaml using country-specific decimal separators which can be misunderstood as group seperators.
+			if (t == typeof(float))
+				return ((float)v).ToString(CultureInfo.InvariantCulture);
+
+			if (t == typeof(Rectangle))
+			{
+				var r = (Rectangle)v;
+				return "{0},{1},{2},{3}".F(r.X, r.Y, r.Width, r.Height);
+			}
+
+			if (t.IsArray)
+			{
+				var elems = ((Array)v).OfType<object>();
+				return elems.JoinWith(",");
+			}
+
+			return v.ToString();
+		}
+
+		public static string FormatValue(object o, FieldInfo f)
+		{
+			return FormatValue(f.GetValue(o), f.FieldType);
+		}
+	}
+}

OpenRA.FileFormats/Manifest.cs

@@ -21,7 +21,7 @@ namespace OpenRA.FileFormats
 		public readonly string[]
 			Mods, Folders, Rules, ServerTraits,
 			Sequences, VoxelSequences, Cursors, Chrome, Assemblies, ChromeLayout,
-			Weapons, Voices, Notifications, Music, Movies, TileSets,
+			Weapons, Voices, Notifications, Music, Movies, Translations, TileSets,
 			ChromeMetrics, PackageContents;
 
 		public readonly Dictionary<string, string> Packages;
@@ -53,6 +53,7 @@ namespace OpenRA.FileFormats
 			Notifications = YamlList(yaml, "Notifications");
 			Music = YamlList(yaml, "Music");
 			Movies = YamlList(yaml, "Movies");
+			Translations = YamlList(yaml, "Translations");
 			TileSets = YamlList(yaml, "TileSets");
 			ChromeMetrics = YamlList(yaml, "ChromeMetrics");
 			PackageContents = YamlList(yaml, "PackageContents");

OpenRA.FileFormats/OpenRA.FileFormats.csproj

@@ -80,6 +80,7 @@
     <Compile Include="Evaluator.cs" />
     <Compile Include="Exts.cs" />
     <Compile Include="FieldLoader.cs" />
+    <Compile Include="FieldSaver.cs" />
     <Compile Include="FileFormats\AudLoader.cs" />
     <Compile Include="FileFormats\Blast.cs" />
     <Compile Include="FileFormats\Blowfish.cs" />

OpenRA.Game/GameRules/Settings.cs

@@ -98,6 +98,9 @@ namespace OpenRA.GameRules
 		public int BatchSize = 8192;
 		public int NumTempBuffers = 8;
 		public int SheetSize = 2048;
+
+		public string Language = "english";
+		public string DefaultLanguage = "english";
 	}
 
 	public class SoundSettings

OpenRA.Game/Map.cs

@@ -99,6 +99,7 @@ namespace OpenRA
 		[FieldLoader.Ignore] public List<MiniYamlNode> Weapons = new List<MiniYamlNode>();
 		[FieldLoader.Ignore] public List<MiniYamlNode> Voices = new List<MiniYamlNode>();
 		[FieldLoader.Ignore] public List<MiniYamlNode> Notifications = new List<MiniYamlNode>();
+		[FieldLoader.Ignore] public List<MiniYamlNode> Translations = new List<MiniYamlNode>();
 
 		// Binary map data
 		[FieldLoader.Ignore] public byte TileFormat = 1;
@@ -191,6 +192,7 @@ namespace OpenRA
 			Weapons = MiniYaml.NodesOrEmpty(yaml, "Weapons");
 			Voices = MiniYaml.NodesOrEmpty(yaml, "Voices");
 			Notifications = MiniYaml.NodesOrEmpty(yaml, "Notifications");
+			Translations = MiniYaml.NodesOrEmpty(yaml, "Translations");
 
 			CustomTerrain = new string[MapSize.X, MapSize.Y];
 
@@ -247,6 +249,7 @@ namespace OpenRA
 			root.Add(new MiniYamlNode("Weapons", null, Weapons));
 			root.Add(new MiniYamlNode("Voices", null, Voices));
 			root.Add(new MiniYamlNode("Notifications", null, Notifications));
+			root.Add(new MiniYamlNode("Translations", null, Translations));
 
 			var entries = new Dictionary<string, byte[]>();
 			entries.Add("map.bin", SaveBinaryData());

OpenRA.Game/ModData.cs

@@ -44,6 +44,7 @@ namespace OpenRA
 
 		public ModData(params string[] mods)
 		{
+			Languages = new string[0];
 			Manifest = new Manifest(mods);
 			ObjectCreator = new ObjectCreator(Manifest);
 			LoadScreen = ObjectCreator.CreateObject<ILoadScreen>(Manifest.LoadScreen.Value);
@@ -71,6 +72,47 @@ namespace OpenRA
 			CursorProvider.Initialize(Manifest.Cursors);
 		}
 
+		public IEnumerable<string> Languages { get; private set; }
+
+		void LoadTranslations(Map map)
+		{
+			var selectedTranslations = new Dictionary<string, string>();
+			var defaultTranslations = new Dictionary<string, string>();
+
+			if (!Manifest.Translations.Any())
+			{
+				Languages = new string[0];
+				FieldLoader.Translations = new Dictionary<string, string>();
+				return;
+			}
+			
+			var yaml = Manifest.Translations.Select(MiniYaml.FromFile).Aggregate(MiniYaml.MergeLiberal);
+			Languages = yaml.Select(t => t.Key).ToArray();
+
+			yaml = MiniYaml.MergeLiberal(map.Translations, yaml);
+
+			foreach (var y in yaml)
+			{
+				if (y.Key == Game.Settings.Graphics.Language)
+					selectedTranslations = y.Value.NodesDict.ToDictionary(x => x.Key, x => x.Value.Value ?? "");
+				if (y.Key == Game.Settings.Graphics.DefaultLanguage)
+					defaultTranslations = y.Value.NodesDict.ToDictionary(x => x.Key, x => x.Value.Value ?? "");
+			}
+			
+			var translations = new Dictionary<string, string>();
+			foreach (var tkv in defaultTranslations.Concat(selectedTranslations))
+			{
+				if (translations.ContainsKey(tkv.Key))
+					continue;
+				if (selectedTranslations.ContainsKey(tkv.Key))
+					translations.Add(tkv.Key, selectedTranslations[tkv.Key]);
+				else
+					translations.Add(tkv.Key, tkv.Value);
+			}
+
+			FieldLoader.Translations = translations;
+		}
+
 		public Map PrepareMap(string uid)
 		{
 			LoadScreen.Display();
@@ -78,6 +120,8 @@ namespace OpenRA
 				throw new InvalidDataException("Invalid map uid: {0}".F(uid));
 			var map = new Map(AvailableMaps[uid].Path);
 
+			LoadTranslations(map);
+
 			// Reinit all our assets
 			InitializeLoaders();
 			FileSystem.LoadFromManifest(Manifest);

OpenRA.Game/Widgets/ButtonWidget.cs

@@ -25,7 +25,7 @@ namespace OpenRA.Widgets
 			set { GetKey = _ => value; }
 		}
 
-		public string Text = "";
+		[Translate] public string Text = "";
 		public bool Depressed = false;
 		public int VisualHeight = ChromeMetrics.Get<int>("ButtonDepth");
 		public string Font = ChromeMetrics.Get<string>("ButtonFont");

OpenRA.Game/Widgets/LabelWidget.cs

@@ -10,6 +10,7 @@
 
 using System;
 using System.Drawing;
+using OpenRA.FileFormats;
 using OpenRA.Graphics;
 
 namespace OpenRA.Widgets
@@ -19,7 +20,7 @@ namespace OpenRA.Widgets
 
 	public class LabelWidget : Widget
 	{
-		public string Text = null;
+		[Translate] public string Text = null;
 		public TextAlign Align = TextAlign.Left;
 		public TextVAlign VAlign = TextVAlign.Middle;
 		public string Font = "Regular";

OpenRA.Mods.Cnc/Widgets/Logic/CncSettingsLogic.cs

@@ -104,6 +104,10 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 			var windowHeight = generalPane.Get<TextFieldWidget>("WINDOW_HEIGHT");
 			windowHeight.Text = graphicsSettings.WindowedSize.Y.ToString();
 
+			var languageDropDownButton = generalPane.Get<DropDownButtonWidget>("LANGUAGE_DROPDOWNBUTTON");
+			languageDropDownButton.OnMouseDown = _ => SettingsMenuLogic.ShowLanguageDropdown(languageDropDownButton);
+			languageDropDownButton.GetText = () => FieldLoader.Translate(Game.Settings.Graphics.Language);
+
 			// Audio
 			var soundSlider = generalPane.Get<SliderWidget>("SOUND_SLIDER");
 			soundSlider.OnChange += x => { soundSettings.SoundVolume = x; Sound.SoundVolume = x; };

OpenRA.Mods.Cnc/Widgets/Logic/ProductionTooltipLogic.cs

@@ -54,7 +54,7 @@ namespace OpenRA.Mods.Cnc.Widgets.Logic
 				nameLabel.GetText = () => tooltip.Name;
 
 				var prereqs = buildable.Prerequisites.Select(a => ActorName(a));
-				var requiresString = prereqs.Any() ? "Requires {0}".F(prereqs.JoinWith(", ")) : "";
+				var requiresString = prereqs.Any() ? requiresLabel.Text.F(prereqs.JoinWith(", ")) : "";
 				requiresLabel.GetText = () => requiresString;
 
 				var power = bi != null ? bi.Power : 0;

OpenRA.Mods.Cnc/Widgets/ProductionPaletteWidget.cs

@@ -37,8 +37,8 @@ namespace OpenRA.Mods.Cnc.Widgets
 		public readonly string TooltipContainer;
 		public readonly string TooltipTemplate = "PRODUCTION_TOOLTIP";
 
-		public readonly string ReadyText = "";
+		[Translate] public readonly string ReadyText = "";
-		public readonly string HoldText = "";
+		[Translate] public readonly string HoldText = "";
 
 		public string TooltipActor { get; private set; }
 		public readonly World World;

OpenRA.Mods.RA/Tooltip.cs

@@ -16,8 +16,8 @@ namespace OpenRA.Mods.RA
 	[Desc("Shown in the build palette widget.")]
 	public class TooltipInfo : ITraitInfo
 	{
-		public readonly string Description = "";
+		[Translate] public readonly string Description = "";
-		public readonly string Name = "";
+		[Translate] public readonly string Name = "";
 
 		[Desc("Sequence of the actor that contains the cameo.")]
 		public readonly string Icon = "icon";

OpenRA.Mods.RA/Widgets/BuildPaletteWidget.cs

@@ -26,9 +26,9 @@ namespace OpenRA.Mods.RA.Widgets
 		public int Columns = 3;
 		public int Rows = 5;
 
-		public string ReadyText = "";
+		[Translate] public string ReadyText = "";
-		public string HoldText = "";
+		[Translate] public string HoldText = "";
-		public string RequiresText = "";
+		[Translate] public string RequiresText = "";
 
 		public int IconWidth = 64;
 		public int IconHeight = 48;
@@ -484,7 +484,7 @@ namespace OpenRA.Mods.RA.Widgets
 				var prereqs = buildable.Prerequisites.Select(Description);
 				if (prereqs.Any())
 				{
-					Game.Renderer.Fonts["Regular"].DrawText("{0} {1}".F(RequiresText, prereqs.JoinWith(", ")), p.ToInt2(), Color.White);
+					Game.Renderer.Fonts["Regular"].DrawText(RequiresText.F(prereqs.JoinWith(", ")), p.ToInt2(), Color.White);
 
 					p += new int2(0, 8);
 				}

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

@@ -11,6 +11,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using OpenRA.FileFormats;
 using OpenRA.FileFormats.Graphics;
 using OpenRA.GameRules;
 using OpenRA.Widgets;
@@ -142,6 +143,10 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			var maxFrameRate = display.Get<TextFieldWidget>("MAX_FRAMERATE");
 			maxFrameRate.Text = gs.MaxFramerate.ToString();
 
+			var languageDropDownButton = display.Get<DropDownButtonWidget>("LANGUAGE_DROPDOWNBUTTON");
+			languageDropDownButton.OnMouseDown = _ => ShowLanguageDropdown(languageDropDownButton);
+			languageDropDownButton.GetText = () => FieldLoader.Translate(Game.Settings.Graphics.Language);
+
 			// Keys
 			var keys = bg.Get("KEYS_PANE");
 			var keyConfig = Game.Settings.Keys;
@@ -270,6 +275,20 @@ namespace OpenRA.Mods.RA.Widgets.Logic
 			return true;
 		}
 
+		public static bool ShowLanguageDropdown(DropDownButtonWidget dropdown)
+		{
+			Func<string, ScrollItemWidget, ScrollItemWidget> setupItem = (o, itemTemplate) =>
+			{
+				var item = ScrollItemWidget.Setup(itemTemplate,
+					() => Game.Settings.Graphics.Language == o,
+					() => Game.Settings.Graphics.Language = o);
+				item.Get<LabelWidget>("LABEL").GetText = () => FieldLoader.Translate(o);
+				return item;
+			};
+
+			dropdown.ShowDropDown("LABEL_DROPDOWN_TEMPLATE", 500, Game.modData.Languages, setupItem);
+			return true;
+		}
 		
 		public static bool ShowSoundTickDropdown(DropDownButtonWidget dropdown, SoundSettings audio)
 		{

mods/cnc/chrome/ingame.yaml

@@ -279,8 +279,8 @@ Container@PLAYER_WIDGETS:
 			X:WINDOW_RIGHT - 204
 			Y:287
 			TooltipContainer:TOOLTIP_CONTAINER
-			ReadyText:Ready
+			ReadyText:@ready@
-			HoldText:On Hold
+			HoldText:@on-hold@
 Background@FMVPLAYER:
 	Width:WINDOW_RIGHT
 	Height:WINDOW_BOTTOM

mods/cnc/chrome/settings.yaml

@@ -3,7 +3,7 @@ Container@SETTINGS_PANEL:
 	X:(WINDOW_RIGHT - WIDTH)/2
 	Y:(WINDOW_BOTTOM - 250)/2
 	Width:740
-	Height:535
+	Height:565
 	Children:
 		ColorPreviewManager@COLOR_MANAGER:
 		Label@TITLE:
@@ -15,7 +15,7 @@ Container@SETTINGS_PANEL:
 			Text:Settings
 		Background@GENERAL_CONTROLS:
 			Width:740
-			Height:290
+			Height:320
 			Background:panel-black
 			Children:
 				Label@TITLE:
@@ -66,35 +66,35 @@ Container@SETTINGS_PANEL:
 					Text:Shellmap Music
 				Label@DEBUG_TITLE:
 					X:15
-					Y:150
+					Y:180
 					Width:340
 					Font:Bold
 					Text:Debug
 					Align:Center
 				Checkbox@PERFTEXT_CHECKBOX:
 					X:15
-					Y:170
+					Y:200
 					Width:300
 					Height:20
 					Font:Regular
 					Text:Show Performance Text
 				Checkbox@PERFGRAPH_CHECKBOX:
 					X:15
-					Y:200
+					Y:230
 					Width:300
 					Height:20
 					Font:Regular
 					Text:Show Performance Graph
 				Checkbox@CHECKUNSYNCED_CHECKBOX:
 					X:15
-					Y:230
+					Y:260
 					Width:300
 					Height:20
 					Font:Regular
 					Text:Check Sync around Unsynced Code
 				Checkbox@SHOW_FATAL_ERROR_DIALOG_CHECKBOX:
 					X:15
-					Y:260
+					Y:290
 					Width:300
 					Height:20
 					Font:Regular
@@ -149,70 +149,82 @@ Container@SETTINGS_PANEL:
 							Width:45
 							Height:25
 							MaxLength:5
+				Label@LANGUAGE_LABEL:
+					X:375
+					Y:70
+					Width:75
+					Height:25
+					Align:Right
+					Text:Language:
+				DropDownButton@LANGUAGE_DROPDOWNBUTTON:
+					X:455
+					Y:70
+					Width:140
+					Height:25
 				Label@VIDEO_DESC:
 					X:375
-					Y:68
+					Y:100
 					Width:340
 					Height:25
 					Font:Tiny
 					Align:Center
-					Text:Mode/Resolution changes will be applied after the game is restarted
+					Text:Mode/Resolution/Language changes will be applied after the game is restarted
 				Checkbox@PIXELDOUBLE_CHECKBOX:
 					X:375
-					Y:110
+					Y:140
 					Width:200
 					Height:20
 					Font:Regular
 					Text:Enable Pixel Doubling
 				Label@AUDIO_TITLE:
 					X:375
-					Y:150
+					Y:180
 					Width:340
 					Font:Bold
 					Text:Sound
 					Align:Center
 				Label@SOUND_LABEL:
 					X:375
-					Y:164
+					Y:194
 					Width:95
 					Height:25
 					Align:Right
 					Text:Sound Volume:
 				Slider@SOUND_SLIDER:
 					X:475
-					Y:170
+					Y:200
 					Width:240
 					Height:20
 					Ticks:5
 				Label@MUSIC_LABEL:
 					X:375
-					Y:194
+					Y:224
 					Width:95
 					Height:25
 					Align:Right
 					Text:Music Volume:
 				Slider@MUSIC_SLIDER:
 					X:475
-					Y:200
+					Y:230
 					Width:240
 					Height:20
 					Ticks:5
 				Label@AUDIO_DEVICE_LABEL:
 					X:375
-					Y:229
+					Y:259
 					Width:75
 					Height:20
 					Text:Audio Device:
 				DropDownButton@AUDIO_DEVICE:
 					X:475
-					Y:230
+					Y:260
 					Width:240
 					Height:25
 					Font:Regular
 					Text:Default Device
 				Label@AUDIO_DESC:
 					X:375
-					Y:258
+					Y:288
 					Width:340
 					Height:25
 					Font:Tiny
@@ -296,20 +308,20 @@ Container@SETTINGS_PANEL:
 					Font:Regular
 					Text:Shift-Enter Toggles Team Chat
 		Button@GENERAL_BUTTON:
-			Y:289
+			Y:319
 			Width:140
 			Height:35
 			Text:General
 		Button@INPUT_BUTTON:
 			X:150
-			Y:289
+			Y:319
 			Width:140
 			Height:35
 			Text:Input
 		Button@BACK_BUTTON:
 			Key:escape
 			X:600
-			Y:289
+			Y:319
 			Width:140
 			Height:35
 			Text:Back

mods/cnc/chrome/tooltips.yaml

@@ -60,6 +60,7 @@ Background@PRODUCTION_TOOLTIP:
 			Y:19
 			Height:23
 			Font:TinyBold
+			Text:@requires@
 		Label@DESC:
 			X:5
 			Y:39

mods/cnc/languages/english.yaml

@@ -0,0 +1,6 @@
+english:
+	english: English
+
+	ready: Ready
+	on-hold: On Hold
+	requires: Requires {0}

mods/cnc/mod.yaml

@@ -94,6 +94,9 @@ Movies:
 	mods/cnc/movies-gdi.yaml
 	mods/cnc/movies-nod.yaml
 	
+Translations:
+	mods/cnc/languages/english.yaml
+
 Voices:
 	mods/cnc/voices.yaml
 

mods/d2k/chrome/ingame.yaml

@@ -155,9 +155,9 @@ Container@PLAYER_WIDGETS:
 			Y:280
 			Width:238
 			Height:500
-			ReadyText: READY
+			ReadyText:@ready@
-			HoldText: ON HOLD
+			HoldText:@on-hold@
-			RequiresText: Requires
+			RequiresText:@requires@
 			IconWidth: 60
 			IconHeight: 48
 			Columns: 3

mods/d2k/languages/english.yaml

@@ -0,0 +1,6 @@
+english:
+	english: English
+
+	ready: READY
+	on-hold: ON HOLD
+	requires: Requires {0}

mods/d2k/mod.yaml

@@ -95,6 +95,9 @@ Music:
 
 Movies:
 
+Translations:
+	mods/d2k/languages/english.yaml
+
 LoadScreen: DefaultLoadScreen
 	Image: mods/d2k/uibits/loadscreen.png
 	InstallerMenuWidget: INSTALL_PANEL

mods/ra/chrome/ingame.yaml

@@ -148,16 +148,16 @@ Container@PLAYER_WIDGETS:
 		SupportPowerBin@INGAME_POWERS_BIN:
 			X:0
 			Y:25
-			ReadyText: READY
+			ReadyText: @ready@
-			HoldText: ON HOLD
+			HoldText: @on-hold@
 		BuildPalette@INGAME_BUILD_PALETTE:
 			X:WINDOW_RIGHT - 250
 			Y:280
 			Width:250
 			Height:500
-			ReadyText: READY
+			ReadyText: @ready@
-			HoldText: ON HOLD
+			HoldText: @on-hold@
-			RequiresText: Requires
+			RequiresText: @requires@
 
 Container@OBSERVER_WIDGETS:
 	Children:

mods/ra/chrome/settings.yaml

@@ -138,7 +138,7 @@ Background@SETTINGS_MENU:
 				Label@SOUND_VOLUME_LABEL:
 					X:0
 					Y:10
-					Text: Sound Volume		
+					Text: Sound Volume
 				Slider@SOUND_VOLUME:
 					X:100
 					Y:0
@@ -255,7 +255,7 @@ Background@SETTINGS_MENU:
 					Height:25
 					Font:Tiny
 					Align:Center
-					Text:Renderer/Mode/Resolution changes will be applied after the game is restarted.
+					Text:Mode/Resolution changes will be applied after the game is restarted.
 				Checkbox@PIXELDOUBLE_CHECKBOX:
 					Y:60
 					Width:200
@@ -274,6 +274,24 @@ Background@SETTINGS_MENU:
 					Width:45
 					Height:25
 					MaxLength:3
+				Label@LANGUAGE_LABEL:
+					X:0
+					Y:130
+					Width:75
+					Height:25
+					Text:Language:
+				DropDownButton@LANGUAGE_DROPDOWNBUTTON:
+					X:80
+					Y:130
+					Width:140
+					Height:25
+				Label@LANGUAGE_DESC:
+					Y:160
+					Width:PARENT_RIGHT
+					Height:25
+					Font:Tiny
+					Align:Center
+					Text:Language changes will be applied after the game is restarted.
 		Container@KEYS_PANE:
 			X:37
 			Y:100

mods/ra/languages/english.yaml

@@ -0,0 +1,6 @@
+english:
+	english: English
+
+	ready: READY
+	on-hold: ON HOLD
+	requires: Requires {0}

mods/ra/mod.yaml

@@ -113,6 +113,9 @@ Movies:
 	mods/ra/movies1.yaml
 	mods/ra/movies2.yaml
 
+Translations:
+	mods/ra/languages/english.yaml
+
 LoadScreen: DefaultLoadScreen
 	Image: mods/ra/uibits/loadscreen.png
 	InstallerMenuWidget: INSTALL_PANEL

mods/ts/languages/english.yaml

@@ -0,0 +1,6 @@
+english:
+	english: English
+
+	ready: READY
+	on-hold: ON HOLD
+	requires: Requires {0}

mods/ts/mod.yaml

@@ -136,6 +136,9 @@ Music:
 
 Movies:
 
+Translations:
+	mods/ts/languages/english.yaml
+
 LoadScreen: DefaultLoadScreen
 	Image: mods/ts/uibits/loadscreen.png
 	InstallerMenuWidget: INSTALL_PANEL