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Savestates: Added header/versioning in file format

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This commit is contained in:
Souryo 2016-01-16 09:25:34 -05:00
parent 9e9c3b4f29
commit baded7ae25
3 changed files with 43 additions and 7 deletions
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10
Core/EmulationSettings.h
View File

@ -80,6 +80,16 @@ private:
static uint32_t _videoScale;
public:
static uint32_t GetMesenVersion()
{
//Version 0.1.0
uint16_t major = 0;
uint8_t minor = 1;
uint8_t revision = 0;
return (major << 16) | (minor << 8) | revision;
}
static void SetFlags(EmulationFlags flags)
{
_flags |= flags;

39
Core/SaveStateManager.cpp
View File

@ -4,6 +4,7 @@
#include "MessageManager.h"
#include "Console.h"
#include "../Utilities/FolderUtilities.h"
#include "EmulationSettings.h"
string SaveStateManager::GetStateFilepath(int stateIndex)
{
@ -31,6 +32,12 @@ void SaveStateManager::SaveState(int stateIndex)
if(file) {
Console::Pause();
uint32_t emuVersion = EmulationSettings::GetMesenVersion();
file.write("MST", 3);
file.write((char*)&emuVersion, sizeof(emuVersion));
file.write((char*)&SaveStateManager::FileFormatVersion, sizeof(uint32_t));
Console::SaveState(file);
Console::Resume();
file.close();
@ -42,16 +49,34 @@ bool SaveStateManager::LoadState(int stateIndex)
{
string filepath = SaveStateManager::GetStateFilepath(stateIndex);
ifstream file(filepath, ios::in | ios::binary);
bool result = false;
if(file) {
Console::Pause();
Console::LoadState(file);
Console::Resume();
char header[3];
file.read(header, 3);
if(memcmp(header, "MST", 3) == 0) {
Console::Pause();
uint32_t emuVersion, fileFormatVersion;
file.read((char*)&emuVersion, sizeof(emuVersion));
file.read((char*)&fileFormatVersion, sizeof(fileFormatVersion));
if(emuVersion != EmulationSettings::GetMesenVersion() || fileFormatVersion != SaveStateManager::FileFormatVersion) {
MessageManager::DisplayMessage("Game States", "State #" + std::to_string(stateIndex) + " does not match emulator version.");
}
Console::LoadState(file);
Console::Resume();
MessageManager::DisplayMessage("Game States", "State #" + std::to_string(stateIndex) + " loaded.");
result = true;
}
file.close();
MessageManager::DisplayMessage("Game States", "State #" + std::to_string(stateIndex) + " loaded.");
return true;
}
if(!result) {
MessageManager::DisplayMessage("Game States", "Slot is empty.");
}
MessageManager::DisplayMessage("Game States", "Slot is empty.");
return false;
return result;
}

1
Core/SaveStateManager.h
View File

@ -5,6 +5,7 @@
class SaveStateManager
{
private:
static const uint32_t FileFormatVersion = 1;
static string GetStateFilepath(int stateIndex);
public: