Add some Media functions to new Lua API

OpenRA.Mods.RA/Scripting/Global/MediaGlobal.cs

@@ -8,14 +8,58 @@
  */
 #endregion
 
+using System;
 using System.Drawing;
+using Eluant;
+using OpenRA.Scripting;
 
 namespace OpenRA.Scripting
 {
 	[ScriptGlobal("Media")]
 	public class MediaGlobal : ScriptGlobal
 	{
-		public MediaGlobal(ScriptContext context) : base(context) { }
+		World world;
+		public MediaGlobal(ScriptContext context) : base(context)
+		{
+			world = context.World;
+		}
+		[Desc("Play an announcer voice listed in notifications.yaml")]
+		public void PlaySpeechNotification(Player player, string notification)
+		{
+			Sound.PlayNotification(world.Map.Rules, player, "Speech", notification, player != null ? player.Country.Race : null);
+		}
+
+		[Desc("Play a sound listed in notifications.yaml")]
+		public void PlaySoundNotification(Player player, string notification)
+		{
+			Sound.PlayNotification(world.Map.Rules, player, "Sounds", notification, player != null ? player.Country.Race : null);
+		}
+
+		Action onComplete;
+		[Desc("Play a VQA video including the file extension.")]
+		public void PlayMovieFullscreen(string movie, LuaFunction func = null)
+		{
+			if (func != null)
+			{
+				var f = func.CopyReference() as LuaFunction;
+				onComplete = () =>
+				{
+					try
+					{
+						using (f)
+							f.Call();
+					}
+					catch (LuaException e)
+					{
+						context.FatalError(e.Message);
+					}
+				};
+			}
+			else
+				onComplete = () => { };
+
+			Media.PlayFMVFullscreen(world, movie, onComplete);
+		}
 
 		[Desc("Display a text message to the player.")]
 		public void DisplayMessage(string text, string prefix = "Mission") // TODO: expose HSLColor to Lua and add as parameter