1 files changed, 292 insertions, 0 deletions
diff --git a/engines/zvision/file/save_manager.cpp b/engines/zvision/file/save_manager.cpp
new file mode 100644
index 0000000000..d169679e28
--- /dev/null
+++ b/engines/zvision/file/save_manager.cpp
@@ -0,0 +1,292 @@
+/* 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 "common/scummsys.h"
+
+#include "zvision/zvision.h"
+#include "zvision/file/save_manager.h"
+#include "zvision/scripting/script_manager.h"
+#include "zvision/graphics/render_manager.h"
+
+#include "common/system.h"
+#include "common/translation.h"
+
+#include "graphics/surface.h"
+#include "graphics/thumbnail.h"
+
+#include "gui/message.h"
+#include "gui/saveload.h"
+
+namespace ZVision {
+
+const uint32 SaveManager::SAVEGAME_ID = MKTAG('Z', 'E', 'N', 'G');
+
+bool SaveManager::scummVMSaveLoadDialog(bool isSave) {
+	GUI::SaveLoadChooser *dialog;
+	Common::String desc;
+	int slot;
+
+	if (isSave) {
+		dialog = new GUI::SaveLoadChooser(_("Save game:"), _("Save"), true);
+
+		slot = dialog->runModalWithCurrentTarget();
+		desc = dialog->getResultString();
+
+		if (desc.empty()) {
+			// create our own description for the saved game, the user didnt enter it
+			desc = dialog->createDefaultSaveDescription(slot);
+		}
+
+		if (desc.size() > 28)
+			desc = Common::String(desc.c_str(), 28);
+	} else {
+		dialog = new GUI::SaveLoadChooser(_("Restore game:"), _("Restore"), false);
+		slot = dialog->runModalWithCurrentTarget();
+	}
+
+	delete dialog;
+
+	if (slot < 0)
+		return false;
+
+	if (isSave) {
+		saveGame(slot, desc, false);
+		return true;
+	} else {
+		Common::ErrorCode result = loadGame(slot).getCode();
+		return (result == Common::kNoError);
+	}
+}
+
+void SaveManager::saveGame(uint slot, const Common::String &saveName, bool useSaveBuffer) {
+	if (!_tempSave && useSaveBuffer)
+		return;
+
+	Common::SaveFileManager *saveFileManager = g_system->getSavefileManager();
+	Common::OutSaveFile *file = saveFileManager->openForSaving(_engine->generateSaveFileName(slot));
+
+	writeSaveGameHeader(file, saveName, useSaveBuffer);
+
+	if (useSaveBuffer)
+		file->write(_tempSave->getData(), _tempSave->size());
+	else
+		_engine->getScriptManager()->serialize(file);
+
+	file->finalize();
+	delete file;
+
+	if (useSaveBuffer)
+		flushSaveBuffer();
+
+	_lastSaveTime = g_system->getMillis();
+}
+
+void SaveManager::autoSave() {
+	saveGame(0, "Auto save", false);
+}
+
+void SaveManager::writeSaveGameHeader(Common::OutSaveFile *file, const Common::String &saveName, bool useSaveBuffer) {
+	file->writeUint32BE(SAVEGAME_ID);
+
+	// Write version
+	file->writeByte(SAVE_VERSION);
+
+	// Write savegame name
+	file->writeString(saveName);
+	file->writeByte(0);
+
+	// Save the game thumbnail
+	if (useSaveBuffer)
+		file->write(_tempThumbnail->getData(), _tempThumbnail->size());
+	else
+		Graphics::saveThumbnail(*file);
+
+	// Write out the save date/time
+	TimeDate td;
+	g_system->getTimeAndDate(td);
+	file->writeSint16LE(td.tm_year + 1900);
+	file->writeSint16LE(td.tm_mon + 1);
+	file->writeSint16LE(td.tm_mday);
+	file->writeSint16LE(td.tm_hour);
+	file->writeSint16LE(td.tm_min);
+}
+
+Common::Error SaveManager::loadGame(int slot) {
+	Common::SeekableReadStream *saveFile = NULL;
+
+	if (slot >= 0) {
+		saveFile = getSlotFile(slot);
+	} else {
+		saveFile = _engine->getSearchManager()->openFile("r.svr");
+		if (!saveFile) {
+			Common::File *restoreFile = new Common::File();
+			if (!restoreFile->open("r.svr")) {
+				delete restoreFile;
+				return Common::kPathDoesNotExist;
+			}
+
+			saveFile = restoreFile;
+		}
+	}
+
+	if (!saveFile)
+		return Common::kPathDoesNotExist;
+
+	// Read the header
+	SaveGameHeader header;
+	if (!readSaveGameHeader(saveFile, header)) {
+		return Common::kUnknownError;
+	}
+
+	ScriptManager *scriptManager = _engine->getScriptManager();
+	// Update the state table values
+	scriptManager->deserialize(saveFile);
+
+	delete saveFile;
+	if (header.thumbnail)
+		delete header.thumbnail;
+
+	if (_engine->getGameId() == GID_NEMESIS && scriptManager->getCurrentLocation() == "tv2f") {
+		// WORKAROUND for script bug #6793: location tv2f (stairs) has two states:
+		// one at the top of the stairs, and one at the bottom. When the player
+		// goes to the bottom of the stairs, the screen changes, and hotspot
+		// 4652 (exit opposite the stairs) is enabled. However, the variable that
+		// controls the state (2408) is reset when the player goes down the stairs.
+		// Furthermore, the room's initialization script disables the stair exit
+		// control (4652). This leads to an impossible situation, where all the
+		// exit controls are disabled, and the player can't more anywhere. Thus,
+		// when loading a game in that room, we check for that impossible
+		// situation, which only occurs after the player has moved down the stairs,
+		// and fix it here by setting the correct background, and enabling the
+		// stair exit hotspot.
+		if ((scriptManager->getStateFlag(2411) & Puzzle::DISABLED) &&
+			(scriptManager->getStateFlag(2408) & Puzzle::DISABLED) &&
+			(scriptManager->getStateFlag(4652) & Puzzle::DISABLED)) {
+			_engine->getRenderManager()->setBackgroundImage("tv2fb21c.tga");
+			scriptManager->unsetStateFlag(4652, Puzzle::DISABLED);
+		}
+	}
+
+	return Common::kNoError;
+}
+
+bool SaveManager::readSaveGameHeader(Common::InSaveFile *in, SaveGameHeader &header) {
+	uint32 tag = in->readUint32BE();
+	// Check if it's original savegame than fill header structure
+	if (tag == MKTAG('Z', 'N', 'S', 'G')) {
+		header.saveYear = 0;
+		header.saveMonth = 0;
+		header.saveDay = 0;
+		header.saveHour = 0;
+		header.saveMinutes = 0;
+		header.saveName = "Original Save";
+		header.thumbnail = NULL;
+		header.version = SAVE_ORIGINAL;
+		in->seek(-4, SEEK_CUR);
+		return true;
+	}
+	if (tag != SAVEGAME_ID) {
+		warning("File is not a Z-Vision save file. Aborting load");
+		return false;
+	}
+
+	// Read in the version
+	header.version = in->readByte();
+
+	// Check that the save version isn't newer than this binary
+	if (header.version > SAVE_VERSION) {
+		uint tempVersion = header.version;
+		GUI::MessageDialog dialog(
+			Common::String::format(
+				"This save file uses version %u, but this engine only "
+				"supports up to version %d. You will need an updated version "
+				"of the engine to use this save file.", tempVersion, SAVE_VERSION
+			),
+		"OK");
+		dialog.runModal();
+	}
+
+	// Read in the save name
+	header.saveName.clear();
+	char ch;
+	while ((ch = (char)in->readByte()) != '\0')
+		header.saveName += ch;
+
+	// Get the thumbnail
+	header.thumbnail = Graphics::loadThumbnail(*in);
+	if (!header.thumbnail)
+		return false;
+
+	// Read in save date/time
+	header.saveYear = in->readSint16LE();
+	header.saveMonth = in->readSint16LE();
+	header.saveDay = in->readSint16LE();
+	header.saveHour = in->readSint16LE();
+	header.saveMinutes = in->readSint16LE();
+
+	return true;
+}
+
+Common::SeekableReadStream *SaveManager::getSlotFile(uint slot) {
+	Common::SeekableReadStream *saveFile = g_system->getSavefileManager()->openForLoading(_engine->generateSaveFileName(slot));
+	if (saveFile == NULL) {
+		// Try to load standard save file
+		Common::String filename;
+		if (_engine->getGameId() == GID_GRANDINQUISITOR)
+			filename = Common::String::format("inqsav%u.sav", slot);
+		else if (_engine->getGameId() == GID_NEMESIS)
+			filename = Common::String::format("nemsav%u.sav", slot);
+
+		saveFile = _engine->getSearchManager()->openFile(filename);
+		if (saveFile == NULL) {
+			Common::File *tmpFile = new Common::File;
+			if (!tmpFile->open(filename)) {
+				delete tmpFile;
+			} else {
+				saveFile = tmpFile;
+			}
+		}
+
+	}
+
+	return saveFile;
+}
+
+void SaveManager::prepareSaveBuffer() {
+	delete _tempThumbnail;
+	_tempThumbnail = new Common::MemoryWriteStreamDynamic;
+	Graphics::saveThumbnail(*_tempThumbnail);
+
+	delete _tempSave;
+	_tempSave = new Common::MemoryWriteStreamDynamic;
+	_engine->getScriptManager()->serialize(_tempSave);
+}
+
+void SaveManager::flushSaveBuffer() {
+	delete _tempThumbnail;
+	_tempThumbnail = NULL;
+
+	delete _tempSave;
+	_tempSave = NULL;
+}
+
+} // End of namespace ZVision