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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 "fullpipe/fullpipe.h"
#include "common/file.h"
#include "fullpipe/utils.h"
#include "fullpipe/objects.h"
namespace Fullpipe {
char *MfcArchive::readPascalString(bool twoByte) {
char *tmp;
int len;
if (twoByte)
len = readUint16LE();
else
len = readByte();
tmp = (char *)calloc(len + 1, 1);
read(tmp, len);
debug(9, "readPascalString: %d <%s>", len, tmp);
return tmp;
}
int MfcArchive::readCount() {
int count = readUint16LE();
if (count == 0xffff)
count = readUint32LE();
return count;
}
enum {
kNullObject,
kCInteraction,
kMessageQueue,
kExCommand,
kCObjstateCommand,
kCGameVar,
kCMctlCompound
};
const struct {
const char *name;
int id;
} classMap[] = {
{ "CInteraction", kCInteraction },
{ "MessageQueue", kMessageQueue },
{ "ExCommand", kExCommand },
{ "CObjstateCommand", kCObjstateCommand },
{ "CGameVar", kCGameVar },
{ "CMctlCompound", kCMctlCompound },
{ 0, 0 }
};
static const char *lookupObjectId(int id) {
for (int i = 0; classMap[i].name; i++) {
if (classMap[i].id == id)
return classMap[i].name;
}
return "";
}
static CObject *createObject(int objectId) {
switch (objectId) {
case kNullObject:
return 0;
case kCInteraction:
return new CInteraction();
case kMessageQueue:
return new MessageQueue();
case kExCommand:
return new ExCommand();
case kCObjstateCommand:
return new CObjstateCommand();
case kCGameVar:
return new CGameVar();
case kCMctlCompound:
return new CMctlCompound();
default:
error("Unknown objectId: %d", objectId);
}
return 0;
}
MfcArchive::MfcArchive() {
for (int i = 0; classMap[i].name; i++) {
_classMap[classMap[i].name] = classMap[i].id;
}
_lastIndex = 1;
_level = 0;
_objectMap.push_back(0);
_objectIdMap.push_back(kNullObject);
}
CObject *MfcArchive::readClass() {
bool isCopyReturned;
CObject *res = parseClass(&isCopyReturned);
if (res && !isCopyReturned)
res->load(*this);
return res;
}
CObject *MfcArchive::parseClass(bool *isCopyReturned) {
char *name;
int objectId = 0;
CObject *res = 0;
uint obTag = readUint16LE();
debug(7, "parseClass::obTag = %d (%04x) at 0x%08x", obTag, obTag, pos() - 2);
if (obTag == 0xffff) {
int schema = readUint16LE();
debug(7, "parseClass::schema = %d", schema);
name = readPascalString(true);
debug(7, "parseClass::class <%s>", name);
if (!_classMap.contains(name)) {
error("Unknown class in MfcArchive: <%s>", name);
}
objectId = _classMap[name];
debug(7, "tag: %d 0x%x (%x)", _objectMap.size() - 1, _objectMap.size() - 1, objectId);
res = createObject(objectId);
_objectMap.push_back(res);
_objectIdMap.push_back(objectId);
_objectMap.push_back(res); // Basically a hack, but behavior is all correct
_objectIdMap.push_back(objectId);
*isCopyReturned = false;
} else if ((obTag & 0x8000) == 0) {
if (_objectMap.size() < obTag) {
error("Object index too big: %d at 0x%08x", obTag, pos() - 2);
}
res = _objectMap[obTag];
*isCopyReturned = true;
} else {
obTag &= ~0x8000;
if (_objectMap.size() < obTag) {
error("Object index too big: %d at 0x%08x", obTag, pos() - 2);
}
debug(7, "parseClass::obTag <%s>", lookupObjectId(_objectIdMap[obTag]));
objectId = _objectIdMap[obTag];
res = createObject(objectId);
_objectMap.push_back(res);
_objectIdMap.push_back(objectId);
*isCopyReturned = false;
}
return res;
}
} // End of namespace Fullpipe
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