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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 "glk/alan2/alan2.h"
#include "glk/alan2/exe.h"
#include "glk/alan2/main.h"
#include "glk/alan2/glkio.h"
#include "common/system.h"
#include "common/config-manager.h"
#include "common/translation.h"
#include "common/error.h"
#include "common/scummsys.h"
#include "common/serializer.h"
#include "glk/glk.h"
#include "glk/streams.h"
namespace Glk {
namespace Alan2 {
Alan2 *g_vm = nullptr;
Alan2::Alan2(OSystem *syst, const GlkGameDescription &gameDesc) : GlkAPI(syst, gameDesc),
vm_exited_cleanly(false) {
g_vm = this;
}
void Alan2::runGame() {
Common::String gameFileName = _gameFile.getName();
if (!is_gamefile_valid())
return;
initialize();
Glk::Alan2::run();
}
void Alan2::initialize() {
// first, open a window for error output
glkMainWin = g_vm->glk_window_open(0, 0, 0, wintype_TextBuffer, 0);
if (glkMainWin == nullptr)
::error("FATAL ERROR: Cannot open initial window");
g_vm->glk_stylehint_set(wintype_TextGrid, style_User1, stylehint_ReverseColor, 1);
glkStatusWin = g_vm->glk_window_open(glkMainWin, winmethod_Above |
winmethod_Fixed, 1, wintype_TextGrid, 0);
g_vm->glk_set_window(glkMainWin);
// Set up the code file to point to the already opened game file
codfil = &_gameFile;
strncpy(codfnm, getFilename().c_str(), 255);
codfnm[255] = '\0';
// Open up the text file
txtfil = new Common::File();
if (!txtfil->open(Common::String::format("%s.dat", advnam)))
::error("Could not open adventure text data file");
}
Common::Error Alan2::readSaveData(Common::SeekableReadStream *rs) {
Common::Serializer s(rs, nullptr);
synchronizeSave(s);
return Common::kNoError;
}
Common::Error Alan2::writeGameData(Common::WriteStream *ws) {
Common::Serializer s(nullptr, ws);
synchronizeSave(s);
ws->flush();
return Common::kNoError;
}
// This works around gcc errors for passing packed structure fields
void syncVal(Common::Serializer &s, uint32 *fld) {
uint32 &v = *fld;
s.syncAsUint32LE(v);
}
void Alan2::synchronizeSave(Common::Serializer &s) {
AtrElem *atr;
Aword i;
// Sync current values
cur.synchronize(s);
// Save actors
for (i = ACTMIN; i <= ACTMAX; ++i) {
syncVal(s, &acts[i - ACTMIN].loc);
syncVal(s, &acts[i - ACTMIN].script);
syncVal(s, &acts[i - ACTMIN].step);
syncVal(s, &acts[i - ACTMIN].count);
if (acts[i - ACTMIN].atrs) {
for (atr = (AtrElem *)addrTo(acts[i - ACTMIN].atrs); !endOfTable(atr); ++atr)
syncVal(s, &atr->val);
}
}
// Sync locations
for (i = LOCMIN; i <= LOCMAX; ++i) {
syncVal(s, &locs[i - LOCMIN].describe);
if (locs[i - LOCMIN].atrs)
for (atr = (AtrElem *)addrTo(locs[i - LOCMIN].atrs); !endOfTable(atr); atr++)
syncVal(s, &atr->val);
}
// Sync objects
for (i = OBJMIN; i <= OBJMAX; ++i) {
syncVal(s, &objs[i - OBJMIN].loc);
if (objs[i - OBJMIN].atrs)
for (atr = (AtrElem *)addrTo(objs[i - OBJMIN].atrs); !endOfTable(atr); atr++)
syncVal(s, &atr->val);
}
// Sync the event queue
if (s.isSaving()) {
eventq[etop].time = 0; // Mark the top
for (i = 0; i <= (Aword)etop; ++i)
eventq[i].synchronize(s);
} else {
for (etop = 0; eventq[etop - 1].time; ++etop)
eventq[etop].synchronize(s);
--etop;
}
// Sync scores
for (i = 0; (int)scores[i] != EOF; i++)
syncVal(s, &scores[i]);
}
bool Alan2::is_gamefile_valid() {
// Set up adventure name
_advName = getFilename();
while (_advName.contains('.'))
_advName.deleteLastChar();
advnam = _advName.c_str();
if (_gameFile.size() < 8) {
GUIErrorMessage(_("This is too short to be a valid Alan2 file."));
return false;
}
if (_gameFile.readUint32BE() != MKTAG(2, 8, 1, 0)) {
GUIErrorMessage(_("This is not a valid Alan2 file."));
return false;
}
return Common::File::exists(Common::String::format("%s.dat", advnam));
}
} // End of namespace Alan2
} // End of namespace Glk
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