1 files changed, 278 insertions, 0 deletions
diff --git a/engines/bbvs/saveload.cpp b/engines/bbvs/saveload.cpp
new file mode 100644
index 0000000000..ff53cc457b
--- /dev/null
+++ b/engines/bbvs/saveload.cpp
@@ -0,0 +1,278 @@
+/* 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 "bbvs/bbvs.h"
+#include "bbvs/gamemodule.h"
+#include "common/savefile.h"
+#include "graphics/thumbnail.h"
+
+namespace Bbvs {
+
+BbvsEngine::kReadSaveHeaderError BbvsEngine::readSaveHeader(Common::SeekableReadStream *in, bool loadThumbnail, SaveHeader &header) {
+
+	header.version = in->readUint32LE();
+	if (header.version > BBVS_SAVEGAME_VERSION)
+		return kRSHEInvalidVersion;
+
+	byte descriptionLen = in->readByte();
+	header.description = "";
+	while (descriptionLen--)
+		header.description += (char)in->readByte();
+
+	if (loadThumbnail) {
+		header.thumbnail = Graphics::loadThumbnail(*in);
+	} else {
+		Graphics::skipThumbnail(*in);
+	}
+
+	// Not used yet, reserved for future usage
+	header.gameID = in->readByte();
+	header.flags = in->readUint32LE();
+
+	header.saveDate = in->readUint32LE();
+	header.saveTime = in->readUint32LE();
+	header.playTime = in->readUint32LE();
+
+	return ((in->eos() || in->err()) ? kRSHEIoError : kRSHENoError);
+}
+
+void BbvsEngine::savegame(const char *filename, const char *description) {
+
+	Common::OutSaveFile *out;
+	if (!(out = g_system->getSavefileManager()->openForSaving(filename))) {
+		warning("Can't create file '%s', game not saved", filename);
+		return;
+	}
+
+	TimeDate curTime;
+	g_system->getTimeAndDate(curTime);
+
+	// Header start
+	out->writeUint32LE(BBVS_SAVEGAME_VERSION);
+
+	byte descriptionLen = strlen(description);
+	out->writeByte(descriptionLen);
+	out->write(description, descriptionLen);
+	
+	Graphics::saveThumbnail(*out);
+
+	// Not used yet, reserved for future usage
+	out->writeByte(0);
+	out->writeUint32LE(0);
+	uint32 saveDate = ((curTime.tm_mday & 0xFF) << 24) | (((curTime.tm_mon + 1) & 0xFF) << 16) | ((curTime.tm_year + 1900) & 0xFFFF);
+	uint32 saveTime = ((curTime.tm_hour & 0xFF) << 16) | (((curTime.tm_min) & 0xFF) << 8) | ((curTime.tm_sec) & 0xFF);
+	uint32 playTime = g_engine->getTotalPlayTime() / 1000;
+	out->writeUint32LE(saveDate);
+	out->writeUint32LE(saveTime);
+	out->writeUint32LE(playTime);
+	// Header end
+	
+	out->write(_snapshot, _snapshotStream->pos());
+
+	out->finalize();
+	delete out;
+}
+
+void BbvsEngine::loadgame(const char *filename) {
+	Common::InSaveFile *in;
+	if (!(in = g_system->getSavefileManager()->openForLoading(filename))) {
+		warning("Can't open file '%s', game not loaded", filename);
+		return;
+	}
+
+	SaveHeader header;
+
+	kReadSaveHeaderError errorCode = readSaveHeader(in, false, header);
+	
+	if (errorCode != kRSHENoError) {
+		warning("Error loading savegame '%s'", filename);
+		delete in;
+		return;
+	}
+	
+	g_engine->setTotalPlayTime(header.playTime * 1000);
+	
+	memset(_sceneObjects, 0, sizeof(_sceneObjects));
+	for (int i = 0; i < kSceneObjectsCount; ++i) {
+		_sceneObjects[i].walkDestPt.x = -1;
+		_sceneObjects[i].walkDestPt.y = -1;
+	}
+
+	_currSceneNum = 0;
+	_newSceneNum = in->readUint32LE();
+	
+	initScene(false);
+
+	_prevSceneNum = in->readUint32LE();
+	_gameState = in->readUint32LE();
+	_mouseCursorSpriteIndex = in->readUint32LE();
+	_mousePos.x = in->readUint16LE();
+	_mousePos.y = in->readUint16LE();
+	_currVerbNum = in->readUint32LE();
+	_activeItemType = in->readUint32LE();
+	_activeItemIndex = in->readUint32LE();
+	_verbPos.x = in->readUint16LE();
+	_verbPos.y = in->readUint16LE();
+	_inventoryButtonIndex = in->readUint32LE();
+	_currInventoryItem = in->readUint32LE();
+	_currTalkObjectIndex = in->readUint32LE();
+	_currCameraNum = in->readUint32LE();
+	_cameraPos.x = in->readUint16LE();
+	_cameraPos.y = in->readUint16LE();
+	_newCameraPos.x = in->readUint16LE();
+	_newCameraPos.y = in->readUint16LE();
+	_dialogSlotCount = in->readUint32LE();
+	_walkMousePos.x = in->readUint16LE();
+	_walkMousePos.y = in->readUint16LE();
+	in->read(_backgroundSoundsActive, kSceneSoundsCount);
+	in->read(_inventoryItemStatus, kInventoryItemStatusCount);
+	in->read(_dialogItemStatus, kDialogItemStatusCount);
+	in->read(_gameVars, kGameVarsCount);
+	in->read(_sceneVisited, kSceneVisitedCount);
+	for (int i = 0; i < _gameModule->getSceneObjectDefsCount(); ++i) {
+		SceneObject *obj = &_sceneObjects[i];
+		obj->x = in->readUint32LE();
+		obj->y = in->readUint32LE();
+		obj->animIndex = in->readUint32LE();
+		obj->frameIndex = in->readUint32LE();
+		obj->frameTicks = in->readUint32LE();
+		obj->walkCount = in->readUint32LE();
+		obj->xIncr = in->readUint32LE(); 
+		obj->yIncr = in->readUint32LE();
+		obj->turnValue = in->readUint32LE(); 
+		obj->turnCount = in->readUint32LE(); 
+		obj->turnTicks = in->readUint32LE();
+		obj->walkDestPt.x = in->readUint16LE();
+		obj->walkDestPt.y = in->readUint16LE();
+		obj->anim = obj->animIndex > 0 ? _gameModule->getAnimation(obj->animIndex) : 0;
+	}
+	
+	updateWalkableRects();
+
+	// Restart scene background sounds
+	for (int i = 0; i < _gameModule->getSceneSoundsCount(); ++i) {
+		if (_backgroundSoundsActive[i]) {
+			SceneSound *sceneSound = _gameModule->getSceneSound(i);
+			playSound(sceneSound->soundNum, true);
+		}
+	}
+
+	_currAction = 0;
+	_currActionCommandIndex = -1;
+
+	delete in;
+
+}
+
+Common::Error BbvsEngine::loadGameState(int slot) {
+	const char *fileName = getSavegameFilename(slot);
+	loadgame(fileName);
+	return Common::kNoError;
+}
+
+Common::Error BbvsEngine::saveGameState(int slot, const Common::String &description) {
+	const char *fileName = getSavegameFilename(slot);
+	savegame(fileName, description.c_str());
+	return Common::kNoError;
+}
+
+const char *BbvsEngine::getSavegameFilename(int num) {
+	static Common::String filename;
+	filename = getSavegameFilename(_targetName, num);
+	return filename.c_str();
+}
+
+Common::String BbvsEngine::getSavegameFilename(const Common::String &target, int num) {
+	assert(num >= 0 && num <= 999);
+	return Common::String::format("%s.%03d", target.c_str(), num);
+}
+
+bool BbvsEngine::existsSavegame(int num) {
+	return _system->getSavefileManager()->listSavefiles(getSavegameFilename(_targetName, num)).size() != 0;
+}
+
+void BbvsEngine::allocSnapshot() {
+	_snapshot = new byte[kSnapshotSize];
+	_snapshotStream = new Common::SeekableMemoryWriteStream(_snapshot, kSnapshotSize);
+}
+
+void BbvsEngine::freeSnapshot() {
+	delete _snapshotStream;
+	delete[] _snapshot;
+}
+
+void BbvsEngine::saveSnapshot() {
+	_hasSnapshot = true;
+	_snapshotStream->seek(0);
+	_snapshotStream->writeUint32LE(_currSceneNum);
+	_snapshotStream->writeUint32LE(_prevSceneNum);
+	_snapshotStream->writeUint32LE(_gameState);
+	_snapshotStream->writeUint32LE(_mouseCursorSpriteIndex);
+	_snapshotStream->writeUint16LE(_mousePos.x);
+	_snapshotStream->writeUint16LE(_mousePos.y);
+	_snapshotStream->writeUint32LE(_currVerbNum);
+	_snapshotStream->writeUint32LE(_activeItemType);
+	_snapshotStream->writeUint32LE(_activeItemIndex);
+	_snapshotStream->writeUint16LE(_verbPos.x);
+	_snapshotStream->writeUint16LE(_verbPos.y);
+	_snapshotStream->writeUint32LE(_inventoryButtonIndex);
+	_snapshotStream->writeUint32LE(_currInventoryItem);
+	_snapshotStream->writeUint32LE(_currTalkObjectIndex);
+	_snapshotStream->writeUint32LE(_currCameraNum);
+	_snapshotStream->writeUint16LE(_cameraPos.x);
+	_snapshotStream->writeUint16LE(_cameraPos.y);
+	_snapshotStream->writeUint16LE(_newCameraPos.x);
+	_snapshotStream->writeUint16LE(_newCameraPos.y);
+	_snapshotStream->writeUint32LE(_dialogSlotCount);
+	_snapshotStream->writeUint16LE(_walkMousePos.x);
+	_snapshotStream->writeUint16LE(_walkMousePos.y);
+	_snapshotStream->write(_backgroundSoundsActive, kSceneSoundsCount);
+	_snapshotStream->write(_inventoryItemStatus, kInventoryItemStatusCount);
+	_snapshotStream->write(_dialogItemStatus, kDialogItemStatusCount);
+	_snapshotStream->write(_gameVars, kGameVarsCount);
+	_snapshotStream->write(_sceneVisited, kSceneVisitedCount);
+	for (int i = 0; i < _gameModule->getSceneObjectDefsCount(); ++i) {
+		SceneObject *obj = &_sceneObjects[i];
+		_snapshotStream->writeUint32LE(obj->x);
+		_snapshotStream->writeUint32LE(obj->y);
+		_snapshotStream->writeUint32LE(obj->animIndex);
+		_snapshotStream->writeUint32LE(obj->frameIndex);
+		_snapshotStream->writeUint32LE(obj->frameTicks);
+		_snapshotStream->writeUint32LE(obj->walkCount);
+		_snapshotStream->writeUint32LE(obj->xIncr); 
+		_snapshotStream->writeUint32LE(obj->yIncr);
+		_snapshotStream->writeUint32LE(obj->turnValue); 
+		_snapshotStream->writeUint32LE(obj->turnCount); 
+		_snapshotStream->writeUint32LE(obj->turnTicks);
+		_snapshotStream->writeUint16LE(obj->walkDestPt.x);
+		_snapshotStream->writeUint16LE(obj->walkDestPt.y);
+	}
+}
+
+void BbvsEngine::writeContinueSavegame() {
+	if (_hasSnapshot) {
+		saveGameState(0, "Continue");
+	}
+}
+
+} // End of namespace Bbvs