Cache Script Pointers (#211)

* Cache Script Pointers

* Rewrite script pointers

src/game/backend/ScriptPointers.cpp

@@ -0,0 +1,75 @@
+#include "ScriptPointers.hpp"
+#include "core/filemgr/FileMgr.hpp"
+#include "core/memory/ModuleMgr.hpp"
+
+namespace YimMenu
+{
+	ScriptPointers::ScriptPointers() :
+	    m_CacheFile(FileMgr::GetProjectFile("./scr_pointers.bin"))
+	{
+	}
+
+	void ScriptPointers::InitImpl()
+	{
+		m_CacheFile.Load();
+		if (m_CacheFile.UpToDate(ModuleMgr.Get("GTA5_Enhanced.exe"_J)->GetNtHeader()->FileHeader.TimeDateStamp))
+		{
+			Load();
+		}
+	}
+
+	void ScriptPointers::CachePointerImpl(joaat_t nameHash, std::uint32_t address)
+	{
+		m_ScriptPointers.emplace(nameHash, address);
+		Save();
+	}
+
+	std::uint32_t ScriptPointers::GetPointerImpl(joaat_t nameHash)
+	{
+		if (auto it = m_ScriptPointers.find(nameHash); it != m_ScriptPointers.end())
+		{
+			return it->second;
+		}
+
+		return 0;
+	}
+
+	void ScriptPointers::Save()
+	{
+		auto dataSize = sizeof(std::uint32_t) + sizeof(scrPointerSaveStruct) * m_ScriptPointers.size();
+		auto data     = std::make_unique<uint8_t[]>(dataSize);
+		auto dataPtr  = data.get();
+
+		*(std::uint32_t*)dataPtr = m_ScriptPointers.size();
+		dataPtr += sizeof(std::uint32_t);
+
+		for (auto& [hash, val] : m_ScriptPointers)
+		{
+			auto saveStruct        = (scrPointerSaveStruct*)dataPtr;
+			saveStruct->m_NameHash = hash;
+			saveStruct->m_Address  = val;
+			dataPtr += sizeof(scrPointerSaveStruct);
+		}
+
+		m_CacheFile.SetHeaderVersion(ModuleMgr.Get("GTA5_Enhanced.exe"_J)->GetNtHeader()->FileHeader.TimeDateStamp);
+		m_CacheFile.SetData(std::move(data), dataSize);
+		m_CacheFile.Write();
+	}
+
+	void ScriptPointers::Load()
+	{
+		auto data = m_CacheFile.Data();
+
+		auto numPointers = *(std::uint32_t*)data;
+		data += sizeof(std::uint32_t);
+
+		for (int i = 0; i < numPointers; i++)
+		{
+			auto saveStruct = (scrPointerSaveStruct*)data;
+			m_ScriptPointers.emplace(saveStruct->m_NameHash, saveStruct->m_Address);
+			data += sizeof(scrPointerSaveStruct);
+		}
+
+		LOG(INFO) << "Loaded " << m_ScriptPointers.size() << " script pointers from cache.";
+	}
+}