feat: PatchSuddenDeathAutoRetry

Osu.Patcher.Hook/Patches/PatchSuddenDeathAutoRetry.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Reflection;
+using HarmonyLib;
+using JetBrains.Annotations;
+using Osu.Stubs;
+using static System.Reflection.Emit.OpCodes;
+
+namespace Osu.Patcher.Hook.Patches;
+
+/// <summary>
+///     Makes the Sudden Death mod restart immediately instead of just failing.
+///     Changes the following code in <c>osu.GameModes.Play.Rulesets.Ruleset:Fail(...)</c>:
+///     <br /><br />
+///     From:
+///     <code><![CDATA[
+///         if ((this.CurrentScore.EnabledMods & Mods.Perfect) > Mods.None)
+///     ]]></code>
+///     To:
+///     <code><![CDATA[
+///         const int mask = Mods.Perfect | Mods.SuddenDeath;
+///         if ((this.CurrentScore.EnabledMods & mask) > Mods.None)
+///     ]]></code>
+/// </summary>
+[HarmonyPatch]
+[UsedImplicitly]
+public class PatchSuddenDeathAutoRetry
+{
+    private const int ModPerfect = 1 << 14;
+    private const int ModSuddenDeath = 1 << 5;
+
+    [UsedImplicitly]
+    [HarmonyTargetMethod]
+    private static MethodBase Target() => Ruleset.Fail.Reference;
+
+    /// <summary>
+    ///     Replace the instruction that loads <c>Mods.Perfect</c> with one
+    ///     that loads <c>Mods.Perfect | Mods.SuddenDeath</c>.
+    /// </summary>
+    [UsedImplicitly]
+    [HarmonyTranspiler]
+    private static IEnumerable<CodeInstruction> Transpiler(IEnumerable<CodeInstruction> instructions) =>
+        instructions.Manipulator(
+            inst => inst.opcode == Ldc_I4 && inst.OperandIs(ModPerfect),
+            inst => inst.operand = ModPerfect | ModSuddenDeath
+        );
+
+    [UsedImplicitly]
+    [HarmonyFinalizer]
+    [SuppressMessage("ReSharper", "InconsistentNaming")]
+    private static void Finalizer(Exception? __exception)
+    {
+        if (__exception != null)
+        {
+            Console.WriteLine($"Exception due to {nameof(PatchSuddenDeathAutoRetry)}: {__exception}");
+        }
+    }
+}

Osu.Stubs/Ruleset.cs

@@ -0,0 +1,30 @@
+using Osu.Stubs.Opcode;
+using static System.Reflection.Emit.OpCodes;
+
+namespace Osu.Stubs;
+
+/// <summary>
+///     Original: <c>osu.GameModes.Play.Rulesets.Ruleset</c>
+///     b20240102.2: <c>#=z35zTtWacH8qc$rYRcsQ6iGtK1MBEurfpzNOeLiQ=</c>
+/// </summary>
+public static class Ruleset
+{
+    /// <summary>
+    ///     Original: <c>Fail(bool continuousPlay)</c>
+    ///     b20240102.2: <c>#=zWoTE_tk=</c>
+    /// </summary>
+    public static LazyMethod Fail = new(
+        "Ruleset#Fail(...)",
+        new[]
+        {
+            Brtrue_S,
+            Leave_S,
+            Ldloca_S,
+            Constrained,
+            Callvirt,
+            Endfinally,
+            Call,
+            Ldc_I4_1,
+        }
+    );
+}