TINSEL: Show saved game creation time in load/save gui

Saved games inspected via the ScummVM load or save
gui will now show the year, month, day, hour, and minute
of its creation. This was already being saved in the
saved game header so no version bump is necessary.

This required adding kSavesSupportMetaInfo and
kSavesSupportCreationDate features. I also had to
add kSavesSupportThumbnail or the saved date is not
shown.

It was necessary to write querySaveMetaInfos.

1 files changed, 45 insertions, 1 deletions

diff --git a/engines/tinsel/detection.cpp b/engines/tinsel/detection.cpp
index 1c60c5eb8a..f8477505ac 100644
--- a/engines/tinsel/detection.cpp
+++ b/engines/tinsel/detection.cpp
@@ -102,6 +102,7 @@ public:
 	virtual bool hasFeature(MetaEngineFeature f) const;
 	virtual SaveStateList listSaves(const char *target) const;
 	virtual int getMaximumSaveSlot() const;
+	virtual SaveStateDescriptor querySaveMetaInfos(const char *target, int slot) const;
 	virtual void removeSaveState(const char *target, int slot) const;
 };
 
@@ -110,7 +111,10 @@ bool TinselMetaEngine::hasFeature(MetaEngineFeature f) const {
 		(f == kSupportsListSaves) ||
 		(f == kSupportsLoadingDuringStartup) ||
 		(f == kSupportsDeleteSave) ||
-		(f == kSimpleSavesNames);
+		(f == kSimpleSavesNames) ||
+		(f == kSavesSupportMetaInfo) ||
+		(f == kSavesSupportThumbnail) ||
+		(f == kSavesSupportCreationDate);
 }
 
 bool Tinsel::TinselEngine::hasFeature(EngineFeature f) const {
@@ -129,6 +133,46 @@ bool Tinsel::TinselEngine::hasFeature(EngineFeature f) const {
 		(f == kSupportsLoadingDuringRuntime);
 }
 
+SaveStateDescriptor TinselMetaEngine::querySaveMetaInfos(const char *target, int slot) const {
+	Common::String fileName;
+	if (slot < 0)
+		return SaveStateDescriptor();
+	else if (slot < 10)
+		fileName = Common::String::format("%s.00%d", target, slot);
+	else if (slot < 100)
+		fileName = Common::String::format("%s.0%d", target, slot);
+	else if (slot < 1000)
+		fileName = Common::String::format("%s.%d", target, slot);
+	else
+		warning("Too many slots!");
+
+	Common::InSaveFile *file = g_system->getSavefileManager()->openForLoading(fileName);
+
+	if (!file) {
+		return SaveStateDescriptor();
+	}
+
+	file->readUint32LE();		// skip id
+	file->readUint32LE();		// skip size
+	file->readUint32LE();		// skip version
+	char saveDesc[Tinsel::SG_DESC_LEN];
+	file->read(saveDesc, sizeof(saveDesc));
+
+	saveDesc[Tinsel::SG_DESC_LEN - 1] = 0;
+	SaveStateDescriptor desc(slot, saveDesc);
+
+	int8 tm_year = file->readUint16LE();
+	int8 tm_mon = file->readSByte();
+	int8 tm_mday = file->readSByte();
+	int8 tm_hour = file->readSByte();
+	int8 tm_min = file->readSByte();
+	
+	desc.setSaveDate(1900+tm_year, tm_mon, tm_mday);
+	desc.setSaveTime(tm_hour, tm_min);
+	delete file;
+	return desc;
+}
+
 namespace Tinsel {
 extern int getList(Common::SaveFileManager *saveFileMan, const Common::String &target);
 }