initial work for 13

TweaksAndThings/Commands/CrewUpdateCommand.cs

@@ -0,0 +1,44 @@
+using Game.State;
+using Helpers;
+using Model.OpsNew;
+using Network;
+using RMROC451.TweaksAndThings.Extensions;
+using System.Linq;
+using UI.Console;
+
+namespace RMROC451.TweaksAndThings.Commands;
+
+[ConsoleCommand("/cu", "generate a formatted message about a locomotive's status.")]
+public class EchoCommand : IConsoleCommand
+{
+    public string Execute(string[] comps)
+    {
+        if (comps.Length < 4)
+        {
+            return "Usage: /cu <car>|. +|- <message>";
+        }
+
+        string query = comps[1];
+        Model.Car car = query == "." ? TrainController.Shared.SelectedLocomotive : TrainController.Shared.CarForString(query);
+
+        if (car.DetermineFuelCar() == null)
+        {
+            return "Car not found.";
+        }
+        string message = string.Join(" ", comps.Skip(3)).Truncate(512);
+
+        switch (comps[2])
+        {
+            case "+":
+                break;
+            case "-":
+                break;
+            default:
+                return "+ to include area or - to leave it out";
+        }
+
+        if (comps[2] == "+") message += $" {OpsController.Shared.ClosestArea(car)?.name ?? "???"}";
+            Multiplayer.Broadcast($"{StateManager.Shared._playersManager.LocalPlayer} {Hyperlink.To(car)}: \"{message}\"");
+        return string.Empty;
+    }
+}