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MACVENTURE: Add thumbnail to savegames

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This commit is contained in:
Borja Lorente 2016-08-21 16:19:55 +02:00
parent 1210f05842
commit 0d868742d4
2 changed files with 51 additions and 12 deletions
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29
engines/macventure/detection.cpp
View File

@ -75,13 +75,16 @@ public:
virtual SaveStateList listSaves(const char *target) const;
virtual int getMaximumSaveSlot() const;
virtual void removeSaveState(const char *target, int slot) const;
SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
};
bool MacVentureMetaEngine::hasFeature(MetaEngineFeature f) const {
return
(f == kSupportsListSaves) ||
(f == kSupportsLoadingDuringStartup) ||
(f == kSupportsDeleteSave);
(f == kSupportsDeleteSave) ||
(f == kSavesSupportMetaInfo) ||
(f == kSavesSupportThumbnail);
}
bool MacVentureEngine::hasFeature(EngineFeature f) const {
@ -141,6 +144,30 @@ void MacVentureMetaEngine::removeSaveState(const char *target, int slot) const {
g_system->getSavefileManager()->removeSavefile(Common::String::format("%s.%03d", target, slot));
}
SaveStateDescriptor MacVentureMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
SaveStateDescriptor desc;
Common::String saveFileName;
Common::String pattern = target;
pattern += ".###";
Common::StringArray filenames = saveFileMan->listSavefiles(pattern);
for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
int slotNum = atoi(file->c_str() + file->size() - 3);
if (slotNum == slot) {
saveFileName = *file;
}
}
Common::InSaveFile *in = saveFileMan->openForLoading(saveFileName);
if (in) {
desc = loadMetaData(in, slot);
delete in;
return desc;
}
return SaveStateDescriptor(-1, "");
}
} // End of namespace MacVenture
#if PLUGIN_ENABLED_DYNAMIC(MACVENTURE)

34
engines/macventure/saveload.cpp
View File

@ -26,16 +26,19 @@
#include "common/savefile.h"
#include "engines/savestate.h"
#include "gui/saveload.h"
#include "graphics/thumbnail.h"
namespace MacVenture {
#define MACVENTURE_SAVE_HEADER MKTAG('M', 'V', 'S', 'S') // (M)ac(V)enture (S)cummVM (S)ave (0x4d565353, uint32)
#define MACVENTURE_SAVE_VERSION 1 //1 BYTE
#define MACVENTURE_DESC_LENGTH 1 //1 BYTE for the description length
#define MACVENTURE_DESC_LENGTH 4 //4 BYTE for the metadata length
SaveStateDescriptor loadMetaData(Common::SeekableReadStream *s, int slot) {
// Metadata is stored at the end of the file
// |DESCRIPTION |
// |THUMBNAIL |
// | |
// |DESCSIZE| DESCRIPTION |
// |HEADER |VERSION|DESCLEN|
s->seek(-(5 + MACVENTURE_DESC_LENGTH), SEEK_END);
uint32 sig = s->readUint32BE();
@ -49,12 +52,18 @@ SaveStateDescriptor loadMetaData(Common::SeekableReadStream *s, int slot) {
// Save is valid, set its slot number
desc.setSaveSlot(slot);
// Depends on MACVENTURE_DESC_LENGTH
uint32 metaSize = s->readUint32BE();
s->seek(-(5 + MACVENTURE_DESC_LENGTH + metaSize), SEEK_END);
// Load the thumbnail
Graphics::Surface *thumb = Graphics::loadThumbnail(*s);
desc.setThumbnail(thumb);
// Load the description
Common::String name;
// Depends on MACVENTURE_DESC_LENGTH
byte descSize = s->readByte();
s->seek(-(5 + MACVENTURE_DESC_LENGTH + descSize), SEEK_END);
for (int i = 0; i < descSize; ++i) {
uint32 descSize = s->readUint32BE();
for (uint32 i = 0; i < descSize; ++i) {
name += s->readByte();
}
desc.setDescription(name);
@ -63,13 +72,15 @@ SaveStateDescriptor loadMetaData(Common::SeekableReadStream *s, int slot) {
}
void writeMetaData(Common::OutSaveFile *file, Common::String desc) {
if (desc.size() >= (1 << (MACVENTURE_DESC_LENGTH * 8))) {
desc.erase((1 << (MACVENTURE_DESC_LENGTH * 8)) - 1);
}
uint thumbSize = file->pos();
Graphics::saveThumbnail(*file);
thumbSize = file->pos() - thumbSize;
file->writeUint32BE(desc.size());
file->writeString(desc);
file->writeUint32BE(MACVENTURE_SAVE_HEADER);
file->writeByte(MACVENTURE_SAVE_VERSION);
file->writeByte(desc.size());
file->writeUint32BE(4 + desc.size() + thumbSize);
}
Common::Error MacVentureEngine::loadGameState(int slot) {
@ -121,9 +132,10 @@ bool MacVentureEngine::scummVMSaveLoadDialog(bool isSave) {
desc = dialog.createDefaultSaveDescription(slot);
}
/*
if (desc.size() > (1 << MACVENTURE_DESC_LENGTH * 8) - 1)
desc = Common::String(desc.c_str(), (1 << MACVENTURE_DESC_LENGTH * 8) - 1);
*/
if (slot < 0)
return true;