uint32_t SaveManager::CalculateChecksum(const uint8_t* data, size_t size) uint32_t crc = 0xFFFFFFFF; for (size_t i = 0; i < size; i++) crc = (crc >> 8) ^ crc32_table[(crc ^ data[i]) & 0xFF];

This feature allows games using the ali213 Steam emulator to manage save files independently of Steam Cloud, with backup/restore, multiple slots, and integrity checks. 1. Header File ( SaveManager.h ) #pragma once #include <string> #include <vector> #include <cstdint> struct SaveSlot int id; std::string name; std::string filePath; uint64_t timestamp; uint32_t checksum; bool isValid; ;

bool SaveManager::BackupSlot(int slotId) std::string src = GetSlotPath(slotId); if (!fs::exists(src)) return false; std::string dst = GetSlotPath(slotId, ".backup"); fs::copy_file(src, dst, fs::copy_options::overwrite_existing); return true;

return true;

crc32_initialized = true;

bool SaveManager::VerifyIntegrity(int slotId) std::string mainPath = GetSlotPath(slotId); std::string metaPath = GetSlotPath(slotId, ".meta");