SUPERNOVA: Implements de-/serialization

WIP. It is currently broken.

6 files changed, 250 insertions, 0 deletions

diff --git a/engines/supernova/rooms.cpp b/engines/supernova/rooms.cpp
index cfccd11b58..a767156d0c 100644
--- a/engines/supernova/rooms.cpp
+++ b/engines/supernova/rooms.cpp
@@ -27,6 +27,72 @@
 
 namespace Supernova {
 
+bool Room::serialize(Common::WriteStream *out) {
+	if (out->err())
+		return false;
+
+	out->writeByte(_id);
+	for (int i = 0; i < kMaxSection; ++i)
+		out->writeByte(_shown[i]);
+
+	int numObjects = 0;
+	while ((_objectState[numObjects]._id != INVALIDOBJECT) && (numObjects < kMaxObject))
+		++numObjects;
+	out->writeByte(numObjects);
+
+	for (int i = 0; i < numObjects; ++i) {
+		out->writeSint16LE(_objectState[i]._name.size() + 1);
+		out->writeString(_objectState[i]._name.c_str());
+		out->writeSint16LE(_objectState[i]._description.size() + 1);
+		out->writeString(_objectState[i]._description.c_str());
+		out->writeByte(_objectState[i]._roomId);
+		out->writeByte(_objectState[i]._id);
+		out->writeSint16LE(_objectState[i]._type);
+		out->writeByte(_objectState[i]._click);
+		out->writeByte(_objectState[i]._click2);
+		out->writeByte(_objectState[i]._section);
+		out->writeByte(_objectState[i]._exitRoom);
+		out->writeByte(_objectState[i]._direction);
+	}
+
+	out->writeByte(_seen);
+
+	return !out->err();
+}
+
+bool Room::deserialize(Common::ReadStream *in) {
+	if (in->err())
+		return false;
+
+	in->readByte();
+	for (int i = 0; i < kMaxSection; ++i)
+		_shown[i] = in->readByte();
+
+	int numObjects = in->readByte();
+	int bufferSize = 0;
+	char stringBuffer[256];
+	for (int i = 0; i < numObjects; ++i) {
+		bufferSize = in->readSint16LE();
+		in->read(stringBuffer, bufferSize > 256 ? 256 : bufferSize);
+		_objectState[i]._name = stringBuffer;
+		bufferSize = in->readSint16LE();
+		in->read(stringBuffer, bufferSize > 256 ? 256 : bufferSize);
+		_objectState[i]._description = stringBuffer;
+		_objectState[i]._roomId = in->readByte();
+		_objectState[i]._id = static_cast<ObjectID>(in->readByte());
+		_objectState[i]._type = static_cast<ObjectType>(in->readSint16LE());
+		_objectState[i]._click = in->readByte();
+		_objectState[i]._click2 = in->readByte();
+		_objectState[i]._section = in->readByte();
+		_objectState[i]._exitRoom = static_cast<RoomID>(in->readByte());
+		_objectState[i]._direction = in->readByte();
+	}
+
+	_seen = in->readByte();
+
+	return !in->err();
+}
+
 void Intro::onEntrance() {
 }
 
diff --git a/engines/supernova/rooms.h b/engines/supernova/rooms.h
index b3956b8a6d..a5895fa8a8 100644
--- a/engines/supernova/rooms.h
+++ b/engines/supernova/rooms.h
@@ -70,6 +70,8 @@ public:
 	virtual bool interact(Action verb, Object &obj1, Object &obj2) {
 		return false;
 	}
+	virtual bool serialize(Common::WriteStream *out);
+	virtual bool deserialize(Common::ReadStream *in);
 
 protected:
 	int _fileNumber;
diff --git a/engines/supernova/state.cpp b/engines/supernova/state.cpp
index 5b5af20e12..5756034a87 100644
--- a/engines/supernova/state.cpp
+++ b/engines/supernova/state.cpp
@@ -22,11 +22,104 @@
 
 #include "common/system.h"
 #include "graphics/palette.h"
+#include "gui/message.h"
 #include "supernova/supernova.h"
 #include "supernova/state.h"
 
 namespace Supernova {
 
+bool GameManager::serialize(Common::WriteStream *out) {
+	if (out->err())
+		return false;
+
+	// GameState
+	out->writeSint32LE(_state._time);
+	out->writeSint32LE(_state._timeSleep);
+	out->writeSint32LE(_state._timeAlarm);
+	out->writeSint32LE(_state._eventTime);
+	out->writeSint32LE(_state._arrivalDaysLeft);
+	out->writeSint32LE(_state._shipEnergyDaysLeft);
+	out->writeSint32LE(_state._landingModuleEnergyDaysLeft);
+	out->writeUint16LE(_state._greatFlag);
+	out->writeSint16LE(_state._timeRobot);
+	out->writeSint16LE(_state._money);
+	out->writeByte(_state._coins);
+	out->writeByte(_state._shoes);
+	out->writeByte(_state._destination);
+	out->writeByte(_state._language);
+	out->writeByte(_state._corridorSearch);
+	out->writeByte(_state._alarmOn);
+	out->writeByte(_state._terminalStripConnected);
+	out->writeByte(_state._terminalStripWire);
+	out->writeByte(_state._cableConnected);
+	out->writeByte(_state._powerOff);
+	out->writeByte(_state._dream);
+
+	// Inventory
+	out->writeSByte(_inventory.getSize());
+	out->writeSByte(_inventoryScroll);
+	for (int i = 0; i < _inventory.getSize(); ++i) {
+		Object *objectStateBegin = _rooms[_inventory.get(i)->_roomId]->getObject(0);
+		byte objectIndex = _inventory.get(i) - objectStateBegin;
+		out->writeByte(_inventory.get(i)->_roomId);
+		out->writeByte(objectIndex);
+	}
+
+	// Rooms
+	for (int i = 0; i < kRoomsNum; ++i) {
+		_rooms[i]->serialize(out);
+	}
+
+	return !out->err();
+}
+
+
+bool GameManager::deserialize(Common::ReadStream *in) {
+	if (in->err()) {
+		return false;
+	}
+
+	// GameState
+	_state._time = in->readSint32LE();
+	_state._timeSleep = in->readSint32LE();
+	_state._timeAlarm = in->readSint32LE();
+	_state._eventTime = in->readSint32LE();
+	_state._arrivalDaysLeft = in->readSint32LE();
+	_state._shipEnergyDaysLeft = in->readSint32LE();
+	_state._landingModuleEnergyDaysLeft = in->readSint32LE();
+	_state._greatFlag = in->readUint16LE();
+	_state._timeRobot = in->readSint16LE();
+	_state._money = in->readSint16LE();
+	_state._coins = in->readByte();
+	_state._shoes = in->readByte();
+	_state._destination = in->readByte();
+	_state._language = in->readByte();
+	_state._corridorSearch = in->readByte();
+	_state._alarmOn = in->readByte();
+	_state._terminalStripConnected = in->readByte();
+	_state._terminalStripWire = in->readByte();
+	_state._cableConnected = in->readByte();
+	_state._powerOff = in->readByte();
+	_state._dream = in->readByte();
+
+	// Inventory
+	int inventorySize = in->readSByte();
+	_inventoryScroll = in->readSByte();
+	_inventory.clear();
+	for (int i = 0; i < inventorySize; ++i) {
+		RoomID objectRoom = static_cast<RoomID>(in->readByte());
+		int objectIndex = in->readByte();
+		_inventory.add(*_rooms[objectRoom]->getObject(objectIndex));
+	}
+
+	// Rooms
+	for (int i = 0; i < kRoomsNum; ++i) {
+		_rooms[i]->deserialize(in);
+	}
+
+	return !in->err();
+}
+
 Inventory::Inventory()
     : _numObjects(0)
 {}
diff --git a/engines/supernova/state.h b/engines/supernova/state.h
index eb7c1e2d2d..0f6efc05e7 100644
--- a/engines/supernova/state.h
+++ b/engines/supernova/state.h
@@ -101,6 +101,8 @@ public:
 	void processInput(Common::KeyState &state);
 	void processInput();
 	void executeRoom();
+	bool serialize(Common::WriteStream *out);
+	bool deserialize(Common::ReadStream *in);
 
 	SupernovaEngine *_vm;
 	Common::KeyState _key;
diff --git a/engines/supernova/supernova.cpp b/engines/supernova/supernova.cpp
index e1abc006ad..f3678de5a1 100644
--- a/engines/supernova/supernova.cpp
+++ b/engines/supernova/supernova.cpp
@@ -110,6 +110,8 @@ SupernovaEngine::SupernovaEngine(OSystem *syst)
     , _screenWidth(320)
     , _screenHeight(200)
     , _messageDisplayed(false)
+    , _allowLoadGame(true)
+    , _allowSaveGame(false)
 {
 //	const Common::FSNode gameDataDir(ConfMan.get("path"));
 //	SearchMan.addSubDirectoryMatching(gameDataDir, "sound");
@@ -211,6 +213,10 @@ bool SupernovaEngine::hasFeature(EngineFeature f) const {
 	switch (f) {
 	case kSupportsRTL:
 		return true;
+	case kSupportsLoadingDuringRuntime:
+		return true;
+	case kSupportsSavingDuringRuntime:
+		return true;
 	default:
 		return false;
 	}
@@ -787,6 +793,79 @@ Common::MemoryReadStream *SupernovaEngine::convertToMod(const char *filename, in
 	return new Common::MemoryReadStream(buffer.getData(), buffer.size());
 }
 
+bool SupernovaEngine::canLoadGameStateCurrently() {
+	return _allowLoadGame;
+}
+
+Common::Error SupernovaEngine::loadGameState(int slot) {
+	return (loadGame(slot) ? Common::kNoError : Common::kWritingFailed);
+}
+
+bool SupernovaEngine::canSaveGameStateCurrently() {
+	return _allowSaveGame;
+}
+
+Common::Error SupernovaEngine::saveGameState(int slot, const Common::String &desc) {
+	return (saveGame(slot, desc) ? Common::kNoError : Common::kWritingFailed);
+}
+
+bool SupernovaEngine::loadGame(int slot) {
+	GUI::SaveLoadChooser *dialog = new GUI::SaveLoadChooser("Load game:", "Load:", false);
+	int loadGameSlot = dialog->runModalWithCurrentTarget();
+	delete dialog;
+
+	if (loadGameSlot < 0 || loadGameSlot > 10)
+		return false;
+
+	Common::String filename = Common::String::format("msn_save.%02d", loadGameSlot);
+//	Common::InSaveFile *savefile = _saveFileMan->openForLoading(filename);
+	Common::InSaveFile *savefile = _saveFileMan->openRawFile(filename);
+	if (!savefile)
+		return false;
+
+	int descriptionSize = savefile->readSint16LE();
+	savefile->skip(descriptionSize);
+	savefile->skip(6);
+//	Graphics::skipThumbnail(*savefile);
+	_gm->deserialize(savefile);
+
+	delete savefile;
+
+	return true;
+}
+
+bool SupernovaEngine::saveGame(int slot, const Common::String &description) {
+	GUI::SaveLoadChooser *dialog = new GUI::SaveLoadChooser("Save game:", "Save", true);
+	int saveGameSlot = dialog->runModalWithCurrentTarget();
+	Common::String saveGameDescription = dialog->getResultString();
+	delete dialog;
+
+	if (saveGameSlot < 0 || saveGameSlot > 10)
+		return false;
+
+	Common::String filename = Common::String::format("msn_save.%02d", saveGameSlot);
+	Common::OutSaveFile *savefile = _saveFileMan->openForSaving(filename, false);
+	if (!savefile)
+		return false;
+
+	TimeDate currentDate;
+	_system->getTimeAndDate(currentDate);
+	uint32 saveDate = (currentDate.tm_mday & 0xFF) << 24 | ((currentDate.tm_mon + 1) & 0xFF) << 16 | ((currentDate.tm_year + 1900) & 0xFFFF);
+	uint16 saveTime = (currentDate.tm_hour & 0xFF) << 8 | ((currentDate.tm_min) & 0xFF);
+
+	savefile->writeSint16LE(saveGameDescription.size() + 1);
+	savefile->write(saveGameDescription.c_str(), saveGameDescription.size() + 1);
+	savefile->writeUint32LE(saveDate);
+	savefile->writeUint16LE(saveTime);
+//	Graphics::saveThumbnail(*savefile);
+	_gm->serialize(savefile);
+
+	savefile->finalize();
+	delete savefile;
+
+	return true;
+}
+
 
 ScreenBufferStack::ScreenBufferStack()
     : _last(_buffer) {
diff --git a/engines/supernova/supernova.h b/engines/supernova/supernova.h
index 1a81e0f17a..4327ba1d7d 100644
--- a/engines/supernova/supernova.h
+++ b/engines/supernova/supernova.h
@@ -95,6 +95,8 @@ public:
 	Common::Event _event;
 	int _screenWidth;
 	int _screenHeight;
+	bool _allowLoadGame;
+	bool _allowSaveGame;
 
 	byte _imageIndex;
 	byte _sectionIndex;
@@ -133,9 +135,15 @@ public:
 	void renderBox(int x, int y, int width, int height, byte color);
 	void setColor63(byte value);
 	void command_print();
+	bool loadGame(int slot);
+	bool saveGame(int slot, const Common::String &description);
 
 	Common::MemoryReadStream *convertToMod(const char *filename, int version = 1);
 
+	virtual Common::Error loadGameState(int slot);
+	virtual bool canLoadGameStateCurrently();
+	virtual Common::Error saveGameState(int slot, const Common::String &desc);
+	virtual bool canSaveGameStateCurrently();
 	virtual bool hasFeature(EngineFeature f) const;
 	virtual void pauseEngineIntern(bool pause);
 };