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Replaced Rosenberg Audio Fix that was placebo with PS2 randomness for this audio

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Might bring it closer to PS2 odds,
but the feature was never broken in the first place.

Fixes #11
This commit is contained in:
Silent 2024-04-29 20:43:25 +02:00
parent e7a2a79de5
commit 836fbafd41
No known key found for this signature in database
GPG Key ID: AE53149BB0C45AF1
1 changed files with 24 additions and 22 deletions
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46
SilentPatchVC/SilentPatchVC.cpp
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@ -13,6 +13,7 @@
#include <array>
#include <memory>
#include <Shlwapi.h>
#include <time.h>
#include "Utils/ModuleList.hpp"
#include "Utils/Patterns.h"
@ -57,8 +58,6 @@ DebugMenuAPI gDebugMenuAPI;
static HMODULE hDLLModule;
static const void* RosieAudioFix_JumpBack;
static RsGlobalType* RsGlobal;
static const void* SubtitlesShadowFix_JumpBack;
@ -78,17 +77,6 @@ inline float GetHeightMult()
return ResolutionHeightMult;
}
void __declspec(naked) RosiesAudioFix()
{
_asm
{
mov byte ptr [ebx+0CCh], 0
mov byte ptr [ebx+148h], 0
jmp [RosieAudioFix_JumpBack]
}
}
static bool bGameInFocus = true;
static LRESULT (CALLBACK **OldWndProc)(HWND, UINT, WPARAM, LPARAM);
@ -296,6 +284,21 @@ void __declspec(naked) AutoPilotTimerFix_VC()
}
}
// PS2 implementation of rand()
static uint64_t seed_rand_ps2 = time(nullptr);
static int rand_ps2()
{
seed_rand_ps2 = 0x5851F42D4C957F2D * seed_rand_ps2 + 1;
return ((seed_rand_ps2 >> 32) & 0x7FFFFFFF);
}
// PS2 rand, but matching PC's RAND_MAX
static int rand15_ps2()
{
return rand_ps2() & 0x7FFF;
}
namespace ZeroAmmoFix
{
@ -875,13 +878,10 @@ void Patch_VC_10(uint32_t width, uint32_t height)
using namespace Memory::DynBase;
RsGlobal = *(RsGlobalType**)DynBaseAddress(0x602D32);
RosieAudioFix_JumpBack = (void*)DynBaseAddress(0x42BFFE);
SubtitlesShadowFix_JumpBack = (void*)DynBaseAddress(0x551701);
InjectHook(0x5433BD, FixedRefValue);
InjectHook(0x42BFF7, RosiesAudioFix, HookType::Jump);
InjectHook(0x5516FC, SubtitlesShadowFix, HookType::Jump);
Patch<BYTE>(0x5517C4, 0xD9);
Patch<BYTE>(0x5517DF, 0xD9);
@ -984,13 +984,10 @@ void Patch_VC_11(uint32_t width, uint32_t height)
using namespace Memory::DynBase;
RsGlobal = *(RsGlobalType**)DynBaseAddress(0x602D12);
RosieAudioFix_JumpBack = (void*)DynBaseAddress(0x42BFFE);
SubtitlesShadowFix_JumpBack = (void*)DynBaseAddress(0x551721);
InjectHook(0x5433DD, FixedRefValue);
InjectHook(0x42BFF7, RosiesAudioFix, HookType::Jump);
InjectHook(0x55171C, SubtitlesShadowFix, HookType::Jump);
Patch<BYTE>(0x5517E4, 0xD9);
Patch<BYTE>(0x5517FF, 0xD9);
@ -1083,13 +1080,10 @@ void Patch_VC_Steam(uint32_t width, uint32_t height)
using namespace Memory::DynBase;
RsGlobal = *(RsGlobalType**)DynBaseAddress(0x602952);
RosieAudioFix_JumpBack = (void*)DynBaseAddress(0x42BFCE);
SubtitlesShadowFix_JumpBack = (void*)DynBaseAddress(0x5515F1);
InjectHook(0x5432AD, FixedRefValue);
InjectHook(0x42BFC7, RosiesAudioFix, HookType::Jump);
InjectHook(0x5515EC, SubtitlesShadowFix, HookType::Jump);
Patch<BYTE>(0x5516B4, 0xD9);
Patch<BYTE>(0x5516CF, 0xD9);
@ -1537,6 +1531,14 @@ void Patch_VC_Common()
memmove(isPlayerTargettingChar.get<void>(), isPlayerTargettingChar.get<void>(5), 5);
InjectHook(isPlayerTargettingChar.get<void>(5), IsPlayerTargettingChar_ExtraChecks, HookType::Call);
}
// Use PS2 randomness for Rosenberg audio to hopefully bring the odds closer to PS2
// The functionality was never broken on PC - but the random distribution seemingly made it looks as if it was
{
auto busted_audio_rand = get_pattern("80 BB 48 01 00 00 00 0F 85 ? ? ? ? E8 ? ? ? ? 25 FF FF 00 00", 13);
InjectHook(busted_audio_rand, rand15_ps2);
}
}
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)