213 lines
7.8 KiB
C++
213 lines
7.8 KiB
C++
#include "Memory.hpp";
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#include "Maths.hpp";
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#include "ObfuscateString.h"
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#include <Windows.h>
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#include <string>
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#include <spdlog/spdlog.h>
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#include <spdlog/sinks/basic_file_sink.h>
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#include <iostream>
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#include <safetyhook.hpp>
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// Constants
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const std::string PLUGIN_NAME = "South Of Midnight";
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const std::string PLUGIN_LOG = PLUGIN_NAME + ".log";
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const std::string gameExecutable = "SouthOfMidnight.exe";
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const float baseAspect = 1.777778;
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// Logger
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std::shared_ptr<spdlog::logger> logger;
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// Screen informations
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static int screenWidth = GetSystemMetrics(SM_CXSCREEN);
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static int screenHeight = GetSystemMetrics(SM_CYSCREEN);
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static float aspectRatio = (float)screenWidth / screenHeight;
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// Plugin states
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static bool AOBScanDone = false;
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static bool g_fix_enabled = false;
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static bool g_fov_fix_enabled = false;
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static bool g_aspect_ratio_fix_enabled = false;
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static int g_AdditionalValue = 0;
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// Shared values
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static float g_FOV_In = 0;
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static float g_Compensated_FOV = 0;
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static float g_FOV_Out = 0;
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// AOB Scan pointers
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static uint8_t* FOVaddress = nullptr;
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static uint8_t* Aspectaddress = nullptr;
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// Hooking
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static SafetyHookMid FOVHook{};
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static SafetyHookMid AspectRatioHook{};
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// Prototypes
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static void FOVFixEnabled(bool fix_enabled);
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static void AspectRatioFixEnabled(bool fix_enabled);
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extern "C" __declspec(dllexport) void SetFixEnabled(bool enabled)
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{
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g_fix_enabled = enabled;
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if (g_fix_enabled && !AOBScanDone) {
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logger->info("--------------- AOB scanning started ---------------");
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if (FOVaddress == nullptr) {
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constexpr auto FOVStringObfuscated = make_obfuscated<0x4A>("90 0F ?? ?? 48 8B 8C ?? ?? ?? ?? ?? 48 ?? ?? E8 ?? ?? ?? ?? 0F 28");
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FOVaddress = Memory::aob_scan(gameExecutable, FOVStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
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//SouthOfMidnight.exe + 357E051 - E8 5A 4A ED FD - call SouthOfMidnight.exe + 1452AB0
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//SouthOfMidnight.exe + 357E056 - 90 - nop
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//SouthOfMidnight.exe + 357E057 - 0F 28 C6 - movaps xmm0, xmm6
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//SouthOfMidnight.exe + 357E05A - 48 8B 8C 24 50 09 00 00 - mov rcx, [rsp + 00000950] <== Injection point
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//SouthOfMidnight.exe + 357E062 - 48 33 CC - xor rcx, rsp
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if (!FOVaddress)
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logger->warn("FOV signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
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else {
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logger->info("FOV signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(FOVaddress));
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FOVaddress += 4; // Offset for the target opcode
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}
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}
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if (Aspectaddress == nullptr) {
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constexpr auto AspectStringObfuscated = make_obfuscated<0x4A>("EB ?? F3 0F ?? ?? ?? ?? ?? ?? F3 0F ?? ?? ?? 8B 87 ?? ?? ?? ?? 89 ?? ?? 0F B6");
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Aspectaddress = Memory::aob_scan(gameExecutable, AspectStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
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//SouthOfMidnight.exe + 3161AB4 - F3 0F 10 87 F8 01 00 00 - movss xmm0, [rdi + 000001F8]
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//SouthOfMidnight.exe + 3161ABC - F3 0F 11 46 18 - movss[rsi + 18], xmm0
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//SouthOfMidnight.exe + 3161AC1 - 8B 87 08 02 00 00 - mov eax, [rdi + 00000208]
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//SouthOfMidnight.exe + 3161AC7 - 89 46 2C - mov[rsi + 2C], eax <== Injection point
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//SouthOfMidnight.exe + 3161ACA - 0F B6 8F 0C 02 00 00 - movzx ecx, byte ptr[rdi + 0000020C]
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if (!Aspectaddress)
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logger->warn("Aspect ratio signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
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else {
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logger->info("Aspect ratio signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(Aspectaddress));
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Aspectaddress += 0x15; // Offset for the target opcode
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}
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if (FOVaddress != nullptr && Aspectaddress != nullptr) {
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logger->info("All AOB signatures found. Ready to patch...");
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logger->info("--------------- AOB scanning finished ---------------");
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AOBScanDone = true;
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}
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}
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}
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if (FOVaddress && Aspectaddress) {
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if (g_fix_enabled) {
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AspectRatioFixEnabled(g_aspect_ratio_fix_enabled);
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FOVFixEnabled(g_fov_fix_enabled || g_aspect_ratio_fix_enabled);
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}
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else {
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AspectRatioFixEnabled(false);
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FOVFixEnabled(false);
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logger->info("All fixes disabled.");
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}
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}
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}
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// Setters for Reshade addon call
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extern "C" __declspec(dllexport) void SetFOVFixEnabled(bool enabled, bool init)
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{
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g_fov_fix_enabled = enabled;
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FOVFixEnabled(g_fov_fix_enabled || g_aspect_ratio_fix_enabled); // FOV fix must be enabled when aspect ratio is too to compensate FOV
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}
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extern "C" __declspec(dllexport) void SetAspectRatioFixEnabled(bool enabled, bool init)
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{
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g_aspect_ratio_fix_enabled = enabled;
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AspectRatioFixEnabled(g_aspect_ratio_fix_enabled);
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}
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extern "C" __declspec(dllexport) void SetFOV(int fov)
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{
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g_AdditionalValue = fov;
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}
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// Getters for Reshade addon call
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extern "C" __declspec(dllexport) float GetFOVIn() {
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return g_FOV_In;
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}
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extern "C" __declspec(dllexport) float GetCompensatedFOV() {
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return g_Compensated_FOV;
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}
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extern "C" __declspec(dllexport) float GetFOVOut() {
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return g_FOV_Out;
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}
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static void FOVFixEnabled(bool fix_enabled) {
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if (g_fix_enabled && fix_enabled && FOVaddress != nullptr) {
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if (!FOVHook) { // Hook only once
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FOVHook = safetyhook::create_mid(FOVaddress,
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[](SafetyHookContext& ctx) {
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g_FOV_In = ctx.xmm0.f32[0];
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if (g_aspect_ratio_fix_enabled)
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g_Compensated_FOV = ctx.xmm0.f32[0] = Maths::CompensateHorizontalFOV(g_FOV_In, baseAspect, aspectRatio);
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else
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g_Compensated_FOV = ctx.xmm0.f32[0];
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g_FOV_Out = ctx.xmm0.f32[0] += (g_fov_fix_enabled ? g_AdditionalValue : 0);
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});
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}
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else FOVHook.enable();
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logger->info("FOV fix enabled");
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}
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if (!fix_enabled && FOVHook) {
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FOVHook.disable();
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logger->info("FOV fix disabled");
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}
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}
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static void AspectRatioFixEnabled(bool fix_enabled) {
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if (g_fix_enabled && fix_enabled && Aspectaddress != nullptr) {
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if (!AspectRatioHook) {
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AspectRatioHook = safetyhook::create_mid(Aspectaddress,
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[](SafetyHookContext& ctx) {
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ctx.rax = *reinterpret_cast<uint32_t*>(&aspectRatio);
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});
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}
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else AspectRatioHook.enable();
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logger->info("Aspect ratio fix enabled");
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FOVFixEnabled(fix_enabled);
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}
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if (!fix_enabled && AspectRatioHook) {
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AspectRatioHook.disable();
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logger->info("Aspect ratio fix disabled");
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if (!g_fov_fix_enabled)
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FOVFixEnabled(fix_enabled);
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}
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}
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// Initialisation de spdlog avec format personnalisé
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static void InitializeLogger()
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{
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try
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{
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logger = spdlog::basic_logger_mt("Fixlib", PLUGIN_LOG, true);
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PLUGIN_LOG.c_str();
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spdlog::set_default_logger(logger);
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// Format : [YYYY-MM-DD HH:MM:SS] [INFO] message
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spdlog::set_pattern("[%Y-%m-%d %H:%M:%S] [%^%l%$] %v");
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spdlog::set_level(spdlog::level::debug);
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logger->flush_on(spdlog::level::debug); // Flush automatically
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}
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catch (const spdlog::spdlog_ex& ex)
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{
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std::string plugin_error_message = "Could not open " + PLUGIN_LOG;
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MessageBoxA(nullptr, plugin_error_message.c_str(), "Logger Error", MB_ICONERROR | MB_OK);
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}
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}
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// Entrée standard DLL
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BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID)
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{
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if (reason == DLL_PROCESS_ATTACH)
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{
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InitializeLogger();
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logger->info("Plugin {} loaded.", PLUGIN_NAME);
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}
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else if (reason == DLL_PROCESS_DETACH)
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{
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logger->info("Plugin {} unloaded.", PLUGIN_NAME);
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spdlog::drop_all();
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}
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return TRUE;
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} |