allows "deprecated" model metadata tag to exlude cars from being utilized for ordering, but will allow them to run out their lives on the rails until they export. Useful for when you mod in a car, and want to remove it without hunting around to find all of them and deleting them.

TweaksAndThings/Patches/PrefabStoreExtensions_Random_Patch.cs

@@ -0,0 +1,42 @@
+using HarmonyLib;
+using Helpers;
+using Model.Database;
+using Model.Definition;
+using Model.Definition.Data;
+using Model.Ops;
+using Serilog;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace RMROC451.TweaksAndThings.Patches;
+
+[HarmonyPatch(typeof(PrefabStoreExtensions))]
+[HarmonyPatch(nameof(PrefabStoreExtensions.Random))]
+[HarmonyPatchCategory("RMROC451TweaksAndThings")]
+internal static class PrefabStoreExtensions_Random_Patch
+{
+    public static bool Prefix(IPrefabStore prefabStore, CarTypeFilter carTypeFilter, IndustryContext.CarSizePreference sizePreference, Random rnd, ref TypedContainerItem<CarDefinition> __result)
+    {
+        List<TypedContainerItem<CarDefinition>> list = 
+            (from p in prefabStore.AllCarDefinitionInfos.ToList().FindAll((TypedContainerItem<CarDefinition> p) => 
+                carTypeFilter.Matches(p.Definition.CarType) && !p.Metadata.Tags.Any(t => t.Equals("deprecated")))
+            orderby p.Definition.WeightEmpty
+            select p).ToList();
+        if (list.Count == 0)
+        {
+            Log.Error($"Couldn't find car for condition: {carTypeFilter}");
+            __result = null;
+        }
+        __result = list.RandomElementUsingNormalDistribution(sizePreference switch
+        {
+            IndustryContext.CarSizePreference.Small => 0.2f,
+            IndustryContext.CarSizePreference.Medium => 0.4f,
+            IndustryContext.CarSizePreference.Large => 0.6f,
+            IndustryContext.CarSizePreference.ExtraLarge => 0.8f,
+            _ => 0.5f,
+        }, rnd);
+
+        return false;
+    }
+}