From 82ab5a316c77693da5b13168b2cd051411cc5332 Mon Sep 17 00:00:00 2001
From: HolographicHat <holographichat@outlook.com>
Date: Sat, 11 Jun 2022 22:04:24 +0800
Subject: [PATCH] Implement il2cpp initialize method

---
 lib/src/il2cpp-init.cpp | 45 +++++++++++++++++++++++++++++++++++++++++
 lib/src/pch.h           | 12 ++++++++++-
 lib/src/util.h          |  3 +++
 3 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 lib/src/il2cpp-init.cpp

diff --git a/lib/src/il2cpp-init.cpp b/lib/src/il2cpp-init.cpp
new file mode 100644
index 0000000..910eb9e
--- /dev/null
+++ b/lib/src/il2cpp-init.cpp
@@ -0,0 +1,45 @@
+#include "pch.h"
+
+#include "il2cpp-init.h"
+
+#define DO_API(r, n, p) r (*n) p
+#include "il2cpp-api-functions.h"
+#undef DO_API
+
+#define DO_APP_FUNC(a, r, n, p) r (*n) p
+namespace Genshin {
+#include "il2cpp-functions.h"
+}
+#undef DO_APP_FUNC
+
+using std::string;
+
+ull GetAddressByExports(HMODULE base, const char* name) {
+	ull funcAddr = reinterpret_cast<ull>(GetProcAddress(base, name));
+	return funcAddr == 0 ? 0 : funcAddr;
+}
+
+ull milliseconds_now() {
+	static LARGE_INTEGER s_frequency;
+	static BOOL s_use_qpc = QueryPerformanceFrequency(&s_frequency);
+	if (s_use_qpc) {
+		LARGE_INTEGER now;
+		QueryPerformanceCounter(&now);
+		return (1000LL * now.QuadPart) / s_frequency.QuadPart;
+	} else {
+		return GetTickCount64();
+	}
+}
+
+void InitIL2CPP() {
+	auto start = milliseconds_now();
+	auto hBase = GetModuleHandle("UserAssembly.dll");
+	auto bAddr = (ull)hBase;
+	#define DO_API(r, n, p) n = (r (*) p) GetAddressByExports(hBase, #n);
+	#include "il2cpp-api-functions.h"
+	#undef DO_API
+	#define DO_APP_FUNC(a, r, n, p) n = (r (*) p)(bAddr + a)
+	#include "il2cpp-functions.h"
+	#undef DO_APP_FUNC
+	printf("Initialized in %llu ms.\n", milliseconds_now() - start);
+}
diff --git a/lib/src/pch.h b/lib/src/pch.h
index 3136437..c1cd9d0 100644
--- a/lib/src/pch.h
+++ b/lib/src/pch.h
@@ -7,10 +7,20 @@
 #ifndef PCH_H
 #define PCH_H
 
+#define WIN32_LEAN_AND_MEAN             // 从 Windows 头文件中排除极少使用的内容
+// Windows 头文件
+#include <windows.h>
+
 // 添加要在此处预编译的标头
+
+typedef unsigned long long ull;
+
 #include <map>
 #include <vector>
+#include <codecvt>
+#include <cstdint>
 #include <iostream>
-#include "framework.h"
+#include <detours.h>
+#include "il2cpp-appdata.h"
 
 #endif //PCH_H
diff --git a/lib/src/util.h b/lib/src/util.h
index dc42037..e93e901 100644
--- a/lib/src/util.h
+++ b/lib/src/util.h
@@ -1,3 +1,6 @@
 #pragma once
 
 HWND FindMainWindowByPID(DWORD pid);
+
+#define ErrorDialogT(title, msg) MessageBox(unityWnd, msg, title, MB_OK | MB_ICONERROR | MB_SYSTEMMODAL);
+#define ErrorDialog(msg) ErrorDialogT("YaeAchievement", msg)