1 files changed, 89 insertions, 0 deletions
diff --git a/engines/macventure/saveload.cpp b/engines/macventure/saveload.cpp
new file mode 100644
index 0000000000..a256713b24
--- /dev/null
+++ b/engines/macventure/saveload.cpp
@@ -0,0 +1,89 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#include "macventure/macventure.h"
+
+#include "common/error.h"
+#include "common/savefile.h"
+#include "engines/savestate.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
+
+SaveStateDescriptor loadMetaData(Common::SeekableReadStream *s, int slot) {
+	// Metadata is stored at the end of the file
+	// |DESCRIPTION						|
+	// |HEADER			|VERSION|DESCLEN|
+	s->seek(-(5 + MACVENTURE_DESC_LENGTH), SEEK_END);
+	uint32 sig = s->readUint32BE();
+	byte version = s->readByte();
+
+	SaveStateDescriptor desc(-1, "");	// init to an invalid save slot
+
+	if (sig != MACVENTURE_SAVE_HEADER || version > MACVENTURE_SAVE_VERSION)
+		return desc;
+
+	// Save is valid, set its slot number
+	desc.setSaveSlot(slot);
+
+	// 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)
+		name += s->readByte();
+	desc.setDescription(name);
+
+	return desc;
+}
+
+void writeMetaData(Common::OutSaveFile *file, Common::String desc) {
+	if (desc.size() >= (1 << (MACVENTURE_DESC_LENGTH * 4))) {
+		desc.erase((1 << (MACVENTURE_DESC_LENGTH * 4)) - 1);
+	}
+	file->writeString(desc);
+	file->writeUint32BE(MACVENTURE_SAVE_HEADER);
+	file->writeByte(MACVENTURE_SAVE_VERSION);
+	file->writeByte(desc.size());
+}
+
+Common::Error MacVentureEngine::loadGameState(int slot) {
+	Common::InSaveFile *file = getSaveFileManager()->openForLoading("shadowgate.001");
+	_world->loadGameFrom(file);
+	reset();
+	return Common::kNoError;
+}
+
+Common::Error MacVentureEngine::saveGameState(int slot, const Common::String &desc) {
+	Common::SaveFileManager *manager = getSaveFileManager();
+	// HACK Get a real name!
+	Common::OutSaveFile *file = manager->openForSaving(desc);
+	_world->saveGameInto(file);
+	writeMetaData(file, desc);
+	delete file;
+}
+
+} // End of namespace MacVenture