limit AutoEngineerDestinationPicker.Loop to running max of 10x per second rather than as fast as it can (caused stuttering in areas with lots of cars).

TweaksAndThings/AutoEngineerDestinationPicker_Loop_Patch.cs

@@ -0,0 +1,62 @@
+using HarmonyLib;
+using Helpers;
+using Model.AI;
+using Railloader;
+using Serilog;
+using System.Collections;
+using Track;
+using UI;
+using UnityEngine;
+using static Game.Messages.RequestOps;
+using static UI.AutoEngineerDestinationPicker;
+
+namespace RMROC451.TweaksAndThings;
+
+[HarmonyPatch(typeof(AutoEngineerDestinationPicker))]
+[HarmonyPatch(nameof(AutoEngineerDestinationPicker.Loop))]
+[HarmonyPatchCategory("RMROC451TweaksAndThings")]
+internal class AutoEngineerDestinationPicker_Loop_Patch
+{
+    static bool Prefix(AutoEngineerDestinationPicker __instance, ref IEnumerator __result)
+    {
+        TweaksAndThingsPlugin tweaksAndThings = SingletonPluginBase<TweaksAndThingsPlugin>.Shared;
+        if (!tweaksAndThings.IsEnabled()) return true;
+
+        __result = Loop(__instance);
+
+        return false;
+    }
+
+    private static IEnumerator Loop(AutoEngineerDestinationPicker __instance)
+    {
+        Hit valueOrDefault;
+        Location location;
+        WaitForSecondsRealtime wait = new WaitForSecondsRealtime(.1f);
+        while (true)
+        {
+            Location? currentOrdersGotoLocation = __instance.GetCurrentOrdersGotoLocation();
+            Hit? hit = __instance.HitLocation();
+            if (hit.HasValue)
+            {
+                valueOrDefault = hit.GetValueOrDefault();
+                location = valueOrDefault.Location;
+                Graph.PositionRotation positionRotation = __instance._graph.GetPositionRotation(location);
+                __instance.destinationMarker.position = WorldTransformer.GameToWorld(positionRotation.Position);
+                __instance.destinationMarker.rotation = positionRotation.Rotation;
+                __instance.destinationMarker.gameObject.SetActive(value: true);
+                if (!currentOrdersGotoLocation.Equals(location) && __instance.MouseClicked)
+                {
+                    break;
+                }
+            }
+            else
+            {
+                __instance.destinationMarker.gameObject.SetActive(value: false);
+            }
+            yield return wait;
+        }
+        Log.Debug("DestinationPicker Hit: {hit} {car} {end}", valueOrDefault.Location, valueOrDefault.CarInfo?.car, valueOrDefault.CarInfo?.end);
+        __instance._ordersHelper.SetWaypoint(location, valueOrDefault.CarInfo?.car.id);
+        __instance.StopLoop();
+    }
+}