Add patch to fix horizontal lists

Author: nicoco007

BeatSaberMarkupLanguage/Harmony Patches/TableView_GetMinMaxVisibleIdx.cs

@@ -0,0 +1,40 @@
+using System.Collections.Generic;
+using System.Reflection;
+using System.Reflection.Emit;
+using HarmonyLib;
+using HMUI;
+
+namespace BeatSaberMarkupLanguage.Harmony_Patches
+{
+    [HarmonyPatch]
+    internal class TableView_GetMinMaxVisibleIdx
+    {
+        private static readonly FieldInfo TableTypeField = AccessTools.DeclaredField(typeof(TableView), nameof(TableView._tableType));
+        private static readonly FieldInfo ScrollViewField = AccessTools.DeclaredField(typeof(TableView), nameof(TableView._scrollView));
+        private static readonly MethodInfo PositionPropertyGetter = AccessTools.DeclaredPropertyGetter(typeof(ScrollView), nameof(ScrollView.position));
+
+        private static IEnumerable<MethodBase> TargetMethods()
+        {
+            yield return AccessTools.DeclaredMethod(typeof(TableView), "GetMinVisibleIdx");
+            yield return AccessTools.DeclaredMethod(typeof(TableView), "GetMaxVisibleIdx");
+        }
+
+        private static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions)
+        {
+            return new CodeMatcher(instructions)
+                .MatchForward(
+                    false,
+                    new CodeMatch(OpCodes.Ldarg_0),
+                    new CodeMatch(i => i.LoadsField(TableTypeField)),
+                    new CodeMatch(i => i.Branches(out Label? _)),
+                    new CodeMatch(OpCodes.Ldarg_0),
+                    new CodeMatch(i => i.LoadsField(ScrollViewField)),
+                    new CodeMatch(i => i.Calls(PositionPropertyGetter)),
+                    new CodeMatch(OpCodes.Neg),
+                    new CodeMatch(i => i.Branches(out Label? _)))
+                .ThrowIfInvalid("Ternary operator not found")
+                .RemoveInstructions(8)
+                .InstructionEnumeration();
+        }
+    }
+}