90ce265ab8
Before, the ingame load dialog pretended to allow loading savegames from all possible slots even if no savegames existed. This introduces the original interpreter's behavior which instead loads a resource string from infobar.txt informing the user that no savegames are available.
134 lines
3.9 KiB
C++
134 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/savefile.h"
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#include "common/textconsole.h"
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#include "tucker/tucker.h"
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namespace Tucker {
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enum {
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kCurrentGameStateVersion = 1
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};
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Common::String generateGameStateFileName(const char *target, int slot, bool prefixOnly) {
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Common::String name(target);
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if (prefixOnly) {
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name += ".*";
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} else {
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name += Common::String::format(".%d", slot);
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}
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return name;
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}
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static void saveOrLoadInt(Common::WriteStream &stream, int &i) {
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stream.writeSint32LE(i);
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}
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static void saveOrLoadInt(Common::ReadStream &stream, int &i) {
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i = stream.readSint32LE();
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}
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template<class S>
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void TuckerEngine::saveOrLoadGameStateData(S &s) {
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for (int i = 0; i < kFlagsTableSize; ++i) {
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saveOrLoadInt(s, _flagsTable[i]);
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}
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for (int i = 0; i < 40; ++i) {
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saveOrLoadInt(s, _inventoryObjectsList[i]);
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}
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for (int i = 0; i < 50; ++i) {
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saveOrLoadInt(s, _inventoryItemsState[i]);
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}
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for (int i = 0; i < 50; ++i) {
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saveOrLoadInt(s, _panelObjectsOffsetTable[i]);
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}
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saveOrLoadInt(s, _mainSpritesBaseOffset);
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saveOrLoadInt(s, _selectedObject._xPos);
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saveOrLoadInt(s, _selectedObject._yPos);
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saveOrLoadInt(s, _locationNum);
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saveOrLoadInt(s, _xPosCurrent);
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saveOrLoadInt(s, _yPosCurrent);
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saveOrLoadInt(s, _inventoryObjectsCount);
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saveOrLoadInt(s, _inventoryObjectsOffset);
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}
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Common::Error TuckerEngine::loadGameState(int num) {
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Common::Error ret = Common::kNoError;
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Common::String gameStateFileName = generateGameStateFileName(_targetName.c_str(), num);
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Common::InSaveFile *f = _saveFileMan->openForLoading(gameStateFileName);
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if (f) {
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uint16 version = f->readUint16LE();
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if (version < kCurrentGameStateVersion) {
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warning("Unsupported gamestate version %d (slot %d)", version, num);
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} else {
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f->skip(2);
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saveOrLoadGameStateData(*f);
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if (f->err() || f->eos()) {
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warning("Can't read file '%s'", gameStateFileName.c_str());
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ret = Common::kReadingFailed;
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} else {
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_nextLocationNum = _locationNum;
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setBlackPalette();
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loadBudSpr(0);
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_forceRedrawPanelItems = true;
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}
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}
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delete f;
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}
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return ret;
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}
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Common::Error TuckerEngine::saveGameState(int num, const Common::String &description) {
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Common::Error ret = Common::kNoError;
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Common::String gameStateFileName = generateGameStateFileName(_targetName.c_str(), num);
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Common::OutSaveFile *f = _saveFileMan->openForSaving(gameStateFileName);
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if (f) {
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f->writeUint16LE(kCurrentGameStateVersion);
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f->writeUint16LE(0);
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saveOrLoadGameStateData(*f);
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f->finalize();
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if (f->err()) {
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warning("Can't write file '%s'", gameStateFileName.c_str());
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ret = Common::kWritingFailed;
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}
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delete f;
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}
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return ret;
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}
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bool TuckerEngine::canLoadGameStateCurrently() {
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return !_player && _cursorType < 2;
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}
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bool TuckerEngine::canSaveGameStateCurrently() {
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return !_player && _cursorType < 2;
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}
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bool TuckerEngine::existsSavegame() {
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Common::String pattern = generateGameStateFileName(_targetName.c_str(), 0, true);
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return !_saveFileMan->listSavefiles(pattern).empty();
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}
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} // namespace Tucker
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