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Transpiler changes to quest loading method to fix quests failing when they shouldn't

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This commit is contained in:
DrakiaXYZ 2024-12-31 16:25:45 -08:00
parent f7c3b7917e
commit 9a3e1de1ba
2 changed files with 78 additions and 0 deletions
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75
project/SPT.SinglePlayer/Patches/Progression/QuestLoadStatusChangePatch.cs Normal file
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@ -0,0 +1,75 @@
using HarmonyLib;
using SPT.Reflection.Patching;
using SPT.Reflection.Utils;
using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;
namespace SPT.SinglePlayer.Patches.Progression
{
/// <summary>
/// Transpiler used to resolve BSG checking quest conditions prior to quest condition handlers being connected.
///
/// In Tarkov 0.15.5, BSG refactored quest initialization, and added a call to `CheckForStatusChange` during the
/// init process. This happened prior to the quest condition handlers being setup, so quests would end up failing
/// even if you didn't meet the fail criteria in some cases. The most obvious case is the "Getting Acquainted" quest
/// failing on raid start/relog after accepting it
///
/// Their fix (And the below fix) is to remove the call to `CheckForStatusChange` from the quest loading code
///
/// This patch is only necessary for SPT targetting client version 0.15.5, the bug is fixed in 0.16
/// </summary>
internal class QuestLoadStatusChangePatch : ModulePatch
{
protected override MethodBase GetTargetMethod()
{
var methodName = "SetQuestStatusData";
var flags = BindingFlags.Public | BindingFlags.Instance;
var desiredType = PatchConstants.EftTypes.SingleCustom(x => x.GetMethod(methodName, flags) != null);
var desiredMethod = AccessTools.FirstMethod(desiredType, IsTargetMethod);
Logger.LogDebug($"{this.GetType().Name} Type: {desiredType?.Name}");
Logger.LogDebug($"{this.GetType().Name} Method: {desiredMethod?.Name}");
return desiredMethod;
}
private bool IsTargetMethod(MethodInfo method)
{
ParameterInfo[] parameters = method.GetParameters();
return method.Name.StartsWith("method_")
&& method.ReturnType == typeof(void)
&& parameters.Length == 1
&& parameters[0].ParameterType == typeof(RawQuestClass);
}
[PatchTranspiler]
public static IEnumerable<CodeInstruction> Transpile(IEnumerable<CodeInstruction> instructions)
{
var codeList = new List<CodeInstruction>(instructions);
for (var i = 0; i < codeList.Count; i++)
{
// We're looking for a `Callvirt` opcode, so skip anything else
if (codeList[i].opcode != OpCodes.Callvirt) continue;
// We want to find a call to `CheckForStatusChange`, so skip anything else
var stringOperand = codeList[i].operand.ToString();
if (stringOperand == null || !stringOperand.Contains("CheckForStatusChange")) continue;
// We've found our call, NOP it out. We need to NOP out the current code, and previous 3 to fully remove it
Logger.LogDebug($"QuestLoadStatusChangePatch Code: |{codeList[i]?.opcode}| |{codeList[i].operand}|");
codeList[i].opcode = OpCodes.Nop;
codeList[i - 1].opcode = OpCodes.Nop;
codeList[i - 2].opcode = OpCodes.Nop;
codeList[i - 3].opcode = OpCodes.Nop;
// There should only be one, so we can break out early
break;
}
return codeList;
}
}
}

3
project/SPT.SinglePlayer/SPTSingleplayerPlugin.cs
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@ -66,6 +66,9 @@ namespace SPT.SinglePlayer
new FirearmControllerShowIncompatibleNotificationClass().Enable();
new FixKeyAlreadyExistsErrorOnAchievementPatch().Enable();
// 3.10.x specific, should be removed for 4.0.x
new QuestLoadStatusChangePatch().Enable();
}
catch (Exception ex)
{