started removing '

players exist before game starts' assumptions

OpenRa.Game/Chrome.cs

@@ -431,9 +431,8 @@ namespace OpenRa
 			world.Minimap.Draw(minimapRect, true);
 			world.Minimap.DrawSpawnPoints(minimapRect);
 
-			if (Game.world.LocalPlayer.Index == 0)
+			if (Game.IsHost)
 			{
-				// we are host
 				AddUiButton(new int2(r.Right - 100, r.Top + 300), "Change Map",
 				_ =>
 				{

OpenRa.Game/Game.cs

@@ -324,6 +324,11 @@ namespace OpenRa
 			//    throw new InvalidOperationException( "Desync in OnKeyDown" );
 		}
 
+		public static bool IsHost
+		{
+			get { return orderManager.Connection.LocalClientId == 0; }
+		}
+
 		public static void HandleKeyPress( KeyPressEventArgs e, Modifiers modifiers )
 		{
 			int sync = Game.world.SyncHash();