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adl.cpp
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adl.cpp
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/* 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 "common/config-manager.h"
#include "common/debug.h"
#include "common/error.h"
#include "common/file.h"
#include "common/system.h"
#include "common/events.h"
#include "common/stream.h"
#include "common/savefile.h"
#include "common/random.h"
#include "engines/util.h"
#include "graphics/palette.h"
#include "graphics/thumbnail.h"
#include "adl/adl.h"
#include "adl/display_a2.h"
#include "adl/detection.h"
#include "adl/graphics.h"
#include "adl/sound.h"
namespace Adl {
class ScriptEnv_6502 : public ScriptEnv {
public:
ScriptEnv_6502(const Command &cmd, byte room, byte verb, byte noun) :
ScriptEnv(cmd, room, verb, noun),
_remCond(cmd.numCond),
_remAct(cmd.numAct) { }
private:
kOpType getOpType() const {
if (_remCond > 0)
return kOpTypeCond;
if (_remAct > 0)
return kOpTypeAct;
return kOpTypeDone;
}
void next(uint numArgs) {
_ip += numArgs + 1;
if (_remCond > 0)
--_remCond;
else if (_remAct > 0)
--_remAct;
}
byte _remCond, _remAct;
};
AdlEngine::~AdlEngine() {
delete _display;
delete _graphics;
delete _console;
delete _dumpFile;
delete _inputScript;
delete _random;
}
AdlEngine::AdlEngine(OSystem *syst, const AdlGameDescription *gd) :
Engine(syst),
_dumpFile(nullptr),
_display(nullptr),
_graphics(nullptr),
_textMode(false),
_linesPrinted(0),
_isRestarting(false),
_isRestoring(false),
_isQuitting(false),
_abortScript(false),
_gameDescription(gd),
_inputScript(nullptr),
_scriptDelay(1000),
_scriptPaused(false),
_console(nullptr),
_messageIds(),
_saveVerb(0),
_saveNoun(0),
_restoreVerb(0),
_restoreNoun(0),
_canSaveNow(false),
_canRestoreNow(false) {
_random = new Common::RandomSource("adl");
DebugMan.addDebugChannel(kDebugChannelScript, "Script", "Trace script execution");
}
bool AdlEngine::pollEvent(Common::Event &event) const {
_console->onFrame();
if (g_system->getEventManager()->pollEvent(event)) {
if (event.type != Common::EVENT_KEYDOWN)
return false;
if (event.kbd.flags & Common::KBD_CTRL) {
if (event.kbd.keycode == Common::KEYCODE_q) {
quitGame();
return false;
}
if (event.kbd.keycode == Common::KEYCODE_d) {
_console->attach();
return false;
}
}
return true;
}
return false;
}
Common::String AdlEngine::readString(Common::ReadStream &stream, byte until) const {
Common::String str;
while (1) {
byte b = stream.readByte();
if (stream.eos() || stream.err())
error("Error reading string");
if (b == until)
break;
str += b;
};
return str;
}
Common::String AdlEngine::readStringAt(Common::SeekableReadStream &stream, uint offset, byte until) const {
stream.seek(offset);
return readString(stream, until);
}
void AdlEngine::openFile(Common::File &file, const Common::String &name) const {
if (!file.open(name))
error("Error opening '%s'", name.c_str());
}
void AdlEngine::printMessage(uint idx) {
printString(loadMessage(idx));
}
Common::String AdlEngine::getItemDescription(const Item &item) const {
if (item.description > 0)
return loadMessage(item.description);
else
return Common::String();
}
void AdlEngine::delay(uint32 ms) const {
if (_inputScript && !_scriptPaused)
return;
uint32 now = g_system->getMillis();
const uint32 end = now + ms;
while (!shouldQuit() && now < end) {
Common::Event event;
pollEvent(event);
g_system->delayMillis(end - now < 16 ? end - now : 16);
now = g_system->getMillis();
}
}
Common::String AdlEngine::inputString(byte prompt) const {
Common::String s;
if (prompt > 0)
_display->printString(Common::String(prompt));
while (1) {
byte b = inputKey();
if (_inputScript) {
// If debug script is active, read input line from file
Common::String line(getScriptLine());
// Debug script terminated, go back to keyboard input
if (line.empty())
continue;
line += '\r';
Common::String native;
for (uint i = 0; i < line.size(); ++i)
native += _display->asciiToNative(line[i]);
_display->printString(native);
// Set pause flag to activate regular behaviour of delay and inputKey
_scriptPaused = true;
if (_scriptDelay > 0)
delay(_scriptDelay);
else
inputKey();
_scriptPaused = false;
return native;
}
if (shouldQuit() || _isRestoring)
return Common::String();
if (b == 0)
continue;
if (b == ('\r' | 0x80)) {
s += b;
_display->printString(Common::String(b));
return s;
}
if (b < 0xa0) {
switch (b) {
case Common::KEYCODE_BACKSPACE | 0x80:
if (!s.empty()) {
_display->moveCursorBackward();
_display->setCharAtCursor(_display->asciiToNative(' '));
s.deleteLastChar();
}
break;
};
} else {
if (s.size() < 255) {
s += b;
_display->printString(Common::String(b));
}
}
}
}
byte AdlEngine::inputKey(bool showCursor) const {
byte key = 0;
// If debug script is active, we fake a return press for the text overflow handling
if (_inputScript && !_scriptPaused)
return _display->asciiToNative('\r');
if (showCursor)
_display->showCursor(true);
while (!shouldQuit() && !_isRestoring && key == 0) {
Common::Event event;
if (pollEvent(event)) {
if (event.type != Common::EVENT_KEYDOWN)
continue;
switch (event.kbd.keycode) {
case Common::KEYCODE_BACKSPACE:
case Common::KEYCODE_RETURN:
key = convertKey(event.kbd.keycode);
break;
default:
if (event.kbd.ascii >= 0x20 && event.kbd.ascii < 0x80)
key = convertKey(event.kbd.ascii);
};
}
// If debug script was activated in the meantime, abort input
if (_inputScript && !_scriptPaused)
return _display->asciiToNative('\r');
_display->renderText();
g_system->delayMillis(16);
}
_display->showCursor(false);
return key;
}
void AdlEngine::loadWords(Common::ReadStream &stream, WordMap &map, Common::StringArray &pri) const {
uint index = 0;
map.clear();
pri.clear();
while (1) {
++index;
byte buf[IDI_WORD_SIZE];
if (stream.read(buf, IDI_WORD_SIZE) < IDI_WORD_SIZE)
error("Error reading word list");
Common::String word((char *)buf, IDI_WORD_SIZE);
if (!map.contains(word))
map[word] = index;
pri.push_back(Console::toAscii(word));
byte synonyms = stream.readByte();
if (stream.err() || stream.eos())
error("Error reading word list");
if (synonyms == 0xff)
break;
// WORKAROUND: Missing verb list terminator in hires3
if (getGameType() == GAME_TYPE_HIRES3 && index == 72 && synonyms == 0)
return;
// WORKAROUND: Missing noun list terminator in hires3
if (getGameType() == GAME_TYPE_HIRES3 && index == 113)
return;
// WORKAROUND: Missing noun list terminator in hires5 region 15
if (getGameType() == GAME_TYPE_HIRES5 && _state.region == 15 && index == 81)
return;
for (uint i = 0; i < synonyms; ++i) {
if (stream.read((char *)buf, IDI_WORD_SIZE) < IDI_WORD_SIZE)
error("Error reading word list");
word = Common::String((char *)buf, IDI_WORD_SIZE);
if (!map.contains(word))
map[word] = index;
}
}
}
void AdlEngine::readCommands(Common::ReadStream &stream, Commands &commands) {
commands.clear();
while (1) {
Command command;
command.room = stream.readByte();
if (command.room == 0xff)
return;
command.verb = stream.readByte();
command.noun = stream.readByte();
byte scriptSize = stream.readByte() - 6;
command.numCond = stream.readByte();
command.numAct = stream.readByte();
for (uint i = 0; i < scriptSize; ++i)
command.script.push_back(stream.readByte());
if (stream.eos() || stream.err())
error("Failed to read commands");
if (command.numCond == 0 && command.script[0] == IDO_ACT_SAVE) {
_saveVerb = command.verb;
_saveNoun = command.noun;
}
if (command.numCond == 0 && command.script[0] == IDO_ACT_LOAD) {
_restoreVerb = command.verb;
_restoreNoun = command.noun;
}
commands.push_back(command);
}
}
void AdlEngine::removeCommand(Commands &commands, uint idx) {
Commands::iterator cmds;
uint i = 0;
for (cmds = commands.begin(); cmds != commands.end(); ++cmds) {
if (i++ == idx) {
commands.erase(cmds);
return;
}
}
error("Command %d not found", idx);
}
Command &AdlEngine::getCommand(Commands &commands, uint idx) {
Commands::iterator cmds;
uint i = 0;
for (cmds = commands.begin(); cmds != commands.end(); ++cmds) {
if (i++ == idx)
return *cmds;
}
error("Command %d not found", idx);
}
void AdlEngine::checkInput(byte verb, byte noun) {
// Try room-local command list first
if (doOneCommand(_roomData.commands, verb, noun))
return;
// If no match was found, try the global list
if (!doOneCommand(_roomCommands, verb, noun))
printMessage(_messageIds.dontUnderstand);
}
bool AdlEngine::isInputValid(byte verb, byte noun, bool &is_any) {
if (isInputValid(_roomData.commands, verb, noun, is_any))
return true;
return isInputValid(_roomCommands, verb, noun, is_any);
}
bool AdlEngine::isInputValid(const Commands &commands, byte verb, byte noun, bool &is_any) {
Commands::const_iterator cmd;
is_any = false;
for (cmd = commands.begin(); cmd != commands.end(); ++cmd) {
Common::ScopedPtr<ScriptEnv> env(createScriptEnv(*cmd, _state.room, verb, noun));
if (matchCommand(*env)) {
if (cmd->verb == IDI_ANY || cmd->noun == IDI_ANY)
is_any = true;
return true;
}
}
return false;
}
void AdlEngine::setupOpcodeTables() {
_condOpcodes.resize(0x0b);
_condOpcodes[0x03] = opcode(&AdlEngine::o_isItemInRoom);
_condOpcodes[0x05] = opcode(&AdlEngine::o_isMovesGT);
_condOpcodes[0x06] = opcode(&AdlEngine::o_isVarEQ);
_condOpcodes[0x09] = opcode(&AdlEngine::o_isCurPicEQ);
_condOpcodes[0x0a] = opcode(&AdlEngine::o_isItemPicEQ);
_actOpcodes.resize(0x1e);
_actOpcodes[0x01] = opcode(&AdlEngine::o_varAdd);
_actOpcodes[0x02] = opcode(&AdlEngine::o_varSub);
_actOpcodes[0x03] = opcode(&AdlEngine::o_varSet);
_actOpcodes[0x04] = opcode(&AdlEngine::o_listInv);
_actOpcodes[0x05] = opcode(&AdlEngine::o_moveItem);
_actOpcodes[0x06] = opcode(&AdlEngine::o_setRoom);
_actOpcodes[0x07] = opcode(&AdlEngine::o_setCurPic);
_actOpcodes[0x08] = opcode(&AdlEngine::o_setPic);
_actOpcodes[0x09] = opcode(&AdlEngine::o_printMsg);
_actOpcodes[0x0a] = opcode(&AdlEngine::o_setLight);
_actOpcodes[0x0b] = opcode(&AdlEngine::o_setDark);
_actOpcodes[0x0d] = opcode(&AdlEngine::o_quit);
_actOpcodes[0x0f] = opcode(&AdlEngine::o_save);
_actOpcodes[0x10] = opcode(&AdlEngine::o_restore);
_actOpcodes[0x11] = opcode(&AdlEngine::o_restart);
_actOpcodes[0x12] = opcode(&AdlEngine::o_placeItem);
_actOpcodes[0x13] = opcode(&AdlEngine::o_setItemPic);
_actOpcodes[0x14] = opcode(&AdlEngine::o_resetPic);
_actOpcodes[0x15] = opcode(&AdlEngine::o_goNorth);
_actOpcodes[0x16] = opcode(&AdlEngine::o_goSouth);
_actOpcodes[0x17] = opcode(&AdlEngine::o_goEast);
_actOpcodes[0x18] = opcode(&AdlEngine::o_goWest);
_actOpcodes[0x19] = opcode(&AdlEngine::o_goUp);
_actOpcodes[0x1a] = opcode(&AdlEngine::o_goDown);
_actOpcodes[0x1b] = opcode(&AdlEngine::o_takeItem);
_actOpcodes[0x1c] = opcode(&AdlEngine::o_dropItem);
_actOpcodes[0x1d] = opcode(&AdlEngine::o_setRoomPic);
}
void AdlEngine::initState() {
_state = State();
initGameState();
}
void AdlEngine::switchRoom(byte roomNr) {
getCurRoom().curPicture = getCurRoom().picture;
_state.room = roomNr;
}
byte AdlEngine::roomArg(byte room) const {
return room;
}
void AdlEngine::loadDroppedItemOffsets(Common::ReadStream &stream, byte count) {
for (uint i = 0; i < count; ++i) {
Common::Point p;
p.x = stream.readByte();
p.y = stream.readByte();
_itemOffsets.push_back(p);
}
}
void AdlEngine::drawPic(byte pic, Common::Point pos) const {
if (_roomData.pictures.contains(pic))
_graphics->drawPic(*_roomData.pictures[pic]->createReadStream(), pos);
else if (_pictures.contains(pic))
_graphics->drawPic(*_pictures[pic]->createReadStream(), pos);
else
error("Picture %d not found", pic);
}
void AdlEngine::bell(uint count) const {
Tones tones;
for (uint i = 0; i < count - 1; ++i) {
tones.push_back(Tone(940.0, 100.0));
tones.push_back(Tone(0.0, 12.0));
}
tones.push_back(Tone(940.0, 100.0));
playTones(tones, false);
}
bool AdlEngine::playTones(const Tones &tones, bool isMusic, bool allowSkip) const {
if (_inputScript && !_scriptPaused)
return false;
Audio::SoundHandle handle;
Audio::AudioStream *stream = new Sound(tones);
g_system->getMixer()->playStream((isMusic ? Audio::Mixer::kMusicSoundType : Audio::Mixer::kSFXSoundType), &handle, stream, -1, 25);
while (!g_engine->shouldQuit() && g_system->getMixer()->isSoundHandleActive(handle)) {
Common::Event event;
pollEvent(event);
if (allowSkip && event.type == Common::EVENT_KEYDOWN) {
// FIXME: Preserve this event
g_system->getMixer()->stopHandle(handle);
return true;
}
g_system->delayMillis(16);
}
return false;
}
const Region &AdlEngine::getRegion(uint i) const {
if (i < 1 || i > _state.regions.size())
error("Region %i out of range [1, %i]", i, _state.regions.size());
return _state.regions[i - 1];
}
Region &AdlEngine::getRegion(uint i) {
if (i < 1 || i > _state.regions.size())
error("Region %i out of range [1, %i]", i, _state.regions.size());
return _state.regions[i - 1];
}
const Room &AdlEngine::getRoom(uint i) const {
if (i < 1 || i > _state.rooms.size())
error("Room %i out of range [1, %i]", i, _state.rooms.size());
return _state.rooms[i - 1];
}
Room &AdlEngine::getRoom(uint i) {
if (i < 1 || i > _state.rooms.size())
error("Room %i out of range [1, %i]", i, _state.rooms.size());
return _state.rooms[i - 1];
}
const Region &AdlEngine::getCurRegion() const {
return getRegion(_state.region);
}
Region &AdlEngine::getCurRegion() {
return getRegion(_state.region);
}
const Room &AdlEngine::getCurRoom() const {
return getRoom(_state.room);
}
Room &AdlEngine::getCurRoom() {
return getRoom(_state.room);
}
const Item &AdlEngine::getItem(uint i) const {
Common::List<Item>::const_iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item)
if (item->id == i)
return *item;
error("Item %i not found", i);
}
Item &AdlEngine::getItem(uint i) {
Common::List<Item>::iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item)
if (item->id == i)
return *item;
error("Item %i not found", i);
}
byte AdlEngine::getVar(uint i) const {
if (i >= _state.vars.size())
error("Variable %i out of range [0, %i]", i, _state.vars.size() - 1);
return _state.vars[i];
}
void AdlEngine::setVar(uint i, byte value) {
if (i >= _state.vars.size())
error("Variable %i out of range [0, %i]", i, _state.vars.size() - 1);
_state.vars[i] = value;
}
void AdlEngine::takeItem(byte noun) {
Common::List<Item>::iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item) {
if (item->noun == noun && item->room == _state.room && item->region == _state.region) {
if (item->state == IDI_ITEM_DOESNT_MOVE) {
printMessage(_messageIds.itemDoesntMove);
return;
}
if (item->state == IDI_ITEM_DROPPED) {
item->room = IDI_ANY;
return;
}
Common::Array<byte>::const_iterator pic;
for (pic = item->roomPictures.begin(); pic != item->roomPictures.end(); ++pic) {
if (*pic == getCurRoom().curPicture) {
item->room = IDI_ANY;
item->state = IDI_ITEM_DROPPED;
return;
}
}
}
}
printMessage(_messageIds.itemNotHere);
}
void AdlEngine::dropItem(byte noun) {
Common::List<Item>::iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item) {
if (item->noun == noun && item->room == IDI_ANY) {
item->room = _state.room;
item->region = _state.region;
item->state = IDI_ITEM_DROPPED;
return;
}
}
printMessage(_messageIds.dontUnderstand);
}
void AdlEngine::gameLoop() {
uint verb = 0, noun = 0;
_isRestarting = false;
// When restoring from the launcher, we don't read
// input on the first iteration. This is needed to
// ensure that restoring from the launcher and
// restoring in-game brings us to the same game state.
// (Also see comment below.)
if (!_isRestoring) {
showRoom();
if (_isRestarting)
return;
_canSaveNow = _canRestoreNow = true;
getInput(verb, noun);
_canSaveNow = _canRestoreNow = false;
if (shouldQuit())
return;
_linesPrinted = 0;
// If we just restored from the GMM, we skip this command
// set, as no command has been input by the user
if (!_isRestoring)
checkInput(verb, noun);
}
if (_isRestoring) {
// We restored from the GMM or launcher. As restoring
// with "RESTORE GAME" does not end command processing,
// we don't break it off here either. This essentially
// means that restoring a game will always run through
// the global commands and increase the move counter
// before the first user input.
_display->printAsciiString("\r");
_isRestoring = false;
verb = _restoreVerb;
noun = _restoreNoun;
}
// Restarting does end command processing
if (_isRestarting)
return;
doAllCommands(_globalCommands, verb, noun);
if (_isRestarting)
return;
advanceClock();
_state.moves++;
}
Common::Error AdlEngine::run() {
_display = Display_A2_create();
_console = new Console(this);
_display->init();
setupOpcodeTables();
init();
int saveSlot = ConfMan.getInt("save_slot");
if (saveSlot >= 0) {
if (loadGameState(saveSlot).getCode() != Common::kNoError)
error("Failed to load save game from slot %i", saveSlot);
_display->moveCursorTo(Common::Point(0, 23));
_isRestoring = true;
} else {
runIntro();
initState();
_display->printAsciiString(_strings.lineFeeds);
}
_display->setMode(Display::kModeMixed);
while (!(_isQuitting || shouldQuit()))
gameLoop();
return Common::kNoError;
}
bool AdlEngine::hasFeature(EngineFeature f) const {
switch (f) {
case kSupportsLoadingDuringRuntime:
case kSupportsSavingDuringRuntime:
case kSupportsRTL:
return true;
default:
return false;
}
}
Common::String AdlEngine::getScriptLine() const {
Common::String line;
do {
line = _inputScript->readLine();
if (_inputScript->eos() || _inputScript->err()) {
stopScript();
return Common::String();
}
line.trim();
} while (line.size() == 0 || line.firstChar() == ';');
return line;
}
void AdlEngine::runScript(const char *filename) const {
// Debug functionality to read input from a text file
_inputScript = new Common::File;
if (!_inputScript->open(filename)) {
stopScript();
return;
}
Common::String line(getScriptLine());
if (!line.empty()) {
// Read random seed
_random->setSeed((uint32)line.asUint64());
}
}
void AdlEngine::stopScript() const {
delete _inputScript;
_inputScript = nullptr;
}
void AdlEngine::loadState(Common::ReadStream &stream) {
_state.room = stream.readByte();
_state.moves = stream.readByte();
_state.isDark = stream.readByte();
_state.time.hours = stream.readByte();
_state.time.minutes = stream.readByte();
uint32 size = stream.readUint32BE();
if (size != _state.rooms.size())
error("Room count mismatch (expected %i; found %i)", _state.rooms.size(), size);
for (uint i = 0; i < size; ++i) {
_state.rooms[i].picture = stream.readByte();
_state.rooms[i].curPicture = stream.readByte();
_state.rooms[i].isFirstTime = stream.readByte();
}
// NOTE: _state.curPicture is part of the save state in the original engine. We
// reconstruct it instead. This is believed to be safe for at least hires 0-2, but
// this may need to be re-evaluated for later games.
_state.curPicture = getCurRoom().curPicture;
size = stream.readUint32BE();
if (size != _state.items.size())
error("Item count mismatch (expected %i; found %i)", _state.items.size(), size);
Common::List<Item>::iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item) {
item->room = stream.readByte();
item->picture = stream.readByte();
item->position.x = stream.readByte();
item->position.y = stream.readByte();
item->state = stream.readByte();
}
size = stream.readUint32BE();
if (size != _state.vars.size())
error("Variable count mismatch (expected %i; found %i)", _state.vars.size(), size);
for (uint i = 0; i < size; ++i)
_state.vars[i] = stream.readByte();
}
Common::Error AdlEngine::loadGameState(int slot) {
Common::String fileName = Common::String::format("%s.s%02d", _targetName.c_str(), slot);
Common::InSaveFile *inFile = getSaveFileManager()->openForLoading(fileName);
if (!inFile) {
warning("Failed to open file '%s'", fileName.c_str());
return Common::kUnknownError;
}
if (inFile->readUint32BE() != MKTAG('A', 'D', 'L', ':')) {
warning("No header found in '%s'", fileName.c_str());
delete inFile;
return Common::kUnknownError;
}
byte saveVersion = inFile->readByte();
if (saveVersion != SAVEGAME_VERSION) {
warning("Save game version %i not supported", saveVersion);
delete inFile;
return Common::kUnknownError;
}
// Skip description
inFile->seek(SAVEGAME_NAME_LEN, SEEK_CUR);
// Skip save time
inFile->seek(6, SEEK_CUR);
uint32 playTime = inFile->readUint32BE();
Graphics::skipThumbnail(*inFile);
initState();
loadState(*inFile);
if (inFile->err() || inFile->eos())
error("Failed to load game '%s'", fileName.c_str());
delete inFile;
setTotalPlayTime(playTime);
_isRestoring = true;
return Common::kNoError;
}
bool AdlEngine::canLoadGameStateCurrently() {
return _canRestoreNow;
}
void AdlEngine::saveState(Common::WriteStream &stream) {
stream.writeByte(_state.room);
stream.writeByte(_state.moves);
stream.writeByte(_state.isDark);
stream.writeByte(_state.time.hours);
stream.writeByte(_state.time.minutes);
stream.writeUint32BE(_state.rooms.size());
for (uint i = 0; i < _state.rooms.size(); ++i) {
stream.writeByte(_state.rooms[i].picture);
stream.writeByte(_state.rooms[i].curPicture);
stream.writeByte(_state.rooms[i].isFirstTime);
}
stream.writeUint32BE(_state.items.size());
Common::List<Item>::const_iterator item;
for (item = _state.items.begin(); item != _state.items.end(); ++item) {
stream.writeByte(item->room);
stream.writeByte(item->picture);
stream.writeByte(item->position.x);
stream.writeByte(item->position.y);
stream.writeByte(item->state);
}
stream.writeUint32BE(_state.vars.size());
for (uint i = 0; i < _state.vars.size(); ++i)
stream.writeByte(_state.vars[i]);
}
Common::Error AdlEngine::saveGameState(int slot, const Common::String &desc) {
Common::String fileName = Common::String::format("%s.s%02d", _targetName.c_str(), slot);
Common::OutSaveFile *outFile = getSaveFileManager()->openForSaving(fileName);
if (!outFile) {
warning("Failed to open file '%s'", fileName.c_str());
return Common::kUnknownError;
}
outFile->writeUint32BE(MKTAG('A', 'D', 'L', ':'));
outFile->writeByte(SAVEGAME_VERSION);
char name[SAVEGAME_NAME_LEN] = { };
if (!desc.empty())
strncpy(name, desc.c_str(), sizeof(name) - 1);
else {
Common::String defaultName("Save ");
defaultName += 'A' + slot;
strncpy(name, defaultName.c_str(), sizeof(name) - 1);
}
outFile->write(name, sizeof(name));
TimeDate t;
g_system->getTimeAndDate(t);
outFile->writeUint16BE(t.tm_year);
outFile->writeByte(t.tm_mon);
outFile->writeByte(t.tm_mday);
outFile->writeByte(t.tm_hour);
outFile->writeByte(t.tm_min);
uint32 playTime = getTotalPlayTime();
outFile->writeUint32BE(playTime);
Graphics::saveThumbnail(*outFile);
saveState(*outFile);
outFile->finalize();
if (outFile->err()) {
delete outFile;
warning("Failed to save game '%s'", fileName.c_str());
return Common::kUnknownError;
}
delete outFile;
return Common::kNoError;
}
bool AdlEngine::canSaveGameStateCurrently() {
if (!_canSaveNow)
return false;
Commands::const_iterator cmd;
// Here we check whether or not the game currently accepts the command
// "SAVE GAME". This prevents saving via the GMM in situations where
// it wouldn't otherwise be possible to do so.
for (cmd = _roomData.commands.begin(); cmd != _roomData.commands.end(); ++cmd) {
Common::ScopedPtr<ScriptEnv> env(createScriptEnv(*cmd, _state.room, _saveVerb, _saveNoun));
if (matchCommand(*env))
return env->op() == IDO_ACT_SAVE;
}
for (cmd = _roomCommands.begin(); cmd != _roomCommands.end(); ++cmd) {
Common::ScopedPtr<ScriptEnv> env(createScriptEnv(*cmd, _state.room, _saveVerb, _saveNoun));
if (matchCommand(*env))
return env->op() == IDO_ACT_SAVE;
}