bool BasePersistenceManager::readHeader(const Common::String &filename) {
cleanup();
_saving = false;
_loadStream = g_system->getSavefileManager()->openForLoading(filename);
//_buffer = BaseFileManager::getEngineInstance()->readWholeFile(filename, &_bufferSize);
if (_loadStream) {
uint32 magic;
magic = getDWORD();
if (magic != DCGF_MAGIC) {
cleanup();
return STATUS_FAILED;
}
magic = getDWORD();
if (magic == SAVE_MAGIC || magic == SAVE_MAGIC_2) {
_savedVerMajor = _loadStream->readByte();
_savedVerMinor = _loadStream->readByte();
_savedExtMajor = _loadStream->readByte();
_savedExtMinor = _loadStream->readByte();
if (magic == SAVE_MAGIC_2) {
_savedVerBuild = (byte)getDWORD();
_savedName = getStringObj();
// load thumbnail
_thumbnailDataSize = getDWORD();
if (_thumbnailDataSize > 0) {
_thumbnailData = new byte[_thumbnailDataSize];
if (_thumbnailData) {
getBytes(_thumbnailData, _thumbnailDataSize);
} else {
_thumbnailDataSize = 0;
}
}
} else {
_savedVerBuild = 35; // last build with ver1 savegames
}
uint32 dataOffset = getDWORD();
_savedDescription = getString();
_savedTimestamp = getTimeDate();
_savedPlayTime = _loadStream->readUint32LE();
_offset = dataOffset;
return STATUS_OK;
}
}
cleanup();
return STATUS_FAILED;
}
bool ScScript::executeInstruction() {
bool ret = STATUS_OK;
uint32 dw;
const char *str = nullptr;
//ScValue* op = new ScValue(_gameRef);
_operand->cleanup();
ScValue *op1;
ScValue *op2;
uint32 inst = getDWORD();
switch (inst) {
case II_DEF_VAR:
_operand->setNULL();
dw = getDWORD();
if (_scopeStack->_sP < 0) {
_globals->setProp(_symbols[dw], _operand);
} else {
_scopeStack->getTop()->setProp(_symbols[dw], _operand);
}
break;
case II_DEF_GLOB_VAR:
case II_DEF_CONST_VAR: {
dw = getDWORD();
/* char *temp = _symbols[dw]; // TODO delete */
// only create global var if it doesn't exist
if (!_engine->_globals->propExists(_symbols[dw])) {
_operand->setNULL();
_engine->_globals->setProp(_symbols[dw], _operand, false, inst == II_DEF_CONST_VAR);
}
break;
}
case II_RET:
if (_scopeStack->_sP >= 0 && _callStack->_sP >= 0) {
_scopeStack->pop();
_iP = (uint32)_callStack->pop()->getInt();
} else {
if (_thread) {
_state = SCRIPT_THREAD_FINISHED;
} else {
if (_numEvents == 0 && _numMethods == 0) {
_state = SCRIPT_FINISHED;
} else {
_state = SCRIPT_PERSISTENT;
}
}
}
break;
case II_RET_EVENT:
_state = SCRIPT_FINISHED;
break;
case II_CALL:
dw = getDWORD();
_operand->setInt(_iP);
_callStack->push(_operand);
_iP = dw;
break;
case II_CALL_BY_EXP: {
// push var
// push string
str = _stack->pop()->getString();
char *methodName = new char[strlen(str) + 1];
strcpy(methodName, str);
ScValue *var = _stack->pop();
if (var->_type == VAL_VARIABLE_REF) {
var = var->_valRef;
}
bool res = STATUS_FAILED;
bool triedNative = false;
// we are already calling this method, try native
if (_thread && _methodThread && strcmp(methodName, _threadEvent) == 0 && var->_type == VAL_NATIVE && _owner == var->getNative()) {
triedNative = true;
res = var->_valNative->scCallMethod(this, _stack, _thisStack, methodName);
}
if (DID_FAIL(res)) {
if (var->isNative() && var->getNative()->canHandleMethod(methodName)) {
if (!_unbreakable) {
_waitScript = var->getNative()->invokeMethodThread(methodName);
if (!_waitScript) {
_stack->correctParams(0);
runtimeError("Error invoking method '%s'.", methodName);
_stack->pushNULL();
} else {
_state = SCRIPT_WAITING_SCRIPT;
_waitScript->copyParameters(_stack);
}
} else {
// can call methods in unbreakable mode
_stack->correctParams(0);
runtimeError("Cannot call method '%s'. Ignored.", methodName);
_stack->pushNULL();
}
delete[] methodName;
break;
}
/*
ScValue* val = var->getProp(MethodName);
if (val) {
dw = GetFuncPos(val->getString());
if (dw==0) {
TExternalFunction* f = GetExternal(val->getString());
if (f) {
ExternalCall(_stack, _thisStack, f);
}
else{
// not an internal nor external, try for native function
_gameRef->ExternalCall(this, _stack, _thisStack, val->getString());
}
}
else{
_operand->setInt(_iP);
_callStack->Push(_operand);
_iP = dw;
}
}
*/
else {
res = STATUS_FAILED;
if (var->_type == VAL_NATIVE && !triedNative) {
res = var->_valNative->scCallMethod(this, _stack, _thisStack, methodName);
}
if (DID_FAIL(res)) {
_stack->correctParams(0);
runtimeError("Call to undefined method '%s'. Ignored.", methodName);
_stack->pushNULL();
}
}
}
delete[] methodName;
}
break;
case II_EXTERNAL_CALL: {
uint32 symbolIndex = getDWORD();
TExternalFunction *f = getExternal(_symbols[symbolIndex]);
if (f) {
externalCall(_stack, _thisStack, f);
} else {
_gameRef->externalCall(this, _stack, _thisStack, _symbols[symbolIndex]);
}
break;
}
case II_SCOPE:
_operand->setNULL();
_scopeStack->push(_operand);
break;
case II_CORRECT_STACK:
dw = getDWORD(); // params expected
_stack->correctParams(dw);
break;
case II_CREATE_OBJECT:
_operand->setObject();
_stack->push(_operand);
break;
case II_POP_EMPTY:
_stack->pop();
break;
case II_PUSH_VAR: {
ScValue *var = getVar(_symbols[getDWORD()]);
if (false && /*var->_type==VAL_OBJECT ||*/ var->_type == VAL_NATIVE) {
_operand->setReference(var);
_stack->push(_operand);
} else {
_stack->push(var);
}
break;
}
case II_PUSH_VAR_REF: {
ScValue *var = getVar(_symbols[getDWORD()]);
_operand->setReference(var);
_stack->push(_operand);
break;
}
case II_POP_VAR: {
char *varName = _symbols[getDWORD()];
ScValue *var = getVar(varName);
if (var) {
ScValue *val = _stack->pop();
if (!val) {
runtimeError("Script stack corruption detected. Please report this script at WME bug reports forum.");
var->setNULL();
} else {
if (val->getType() == VAL_VARIABLE_REF) {
val = val->_valRef;
}
if (val->_type == VAL_NATIVE) {
var->setValue(val);
} else {
var->copy(val);
}
}
}
break;
}
case II_PUSH_VAR_THIS:
_stack->push(_thisStack->getTop());
break;
case II_PUSH_INT:
_stack->pushInt((int)getDWORD());
break;
case II_PUSH_FLOAT:
_stack->pushFloat(getFloat());
break;
case II_PUSH_BOOL:
_stack->pushBool(getDWORD() != 0);
break;
case II_PUSH_STRING:
_stack->pushString(getString());
break;
case II_PUSH_NULL:
_stack->pushNULL();
break;
case II_PUSH_THIS_FROM_STACK:
_operand->setReference(_stack->getTop());
_thisStack->push(_operand);
break;
case II_PUSH_THIS:
_operand->setReference(getVar(_symbols[getDWORD()]));
_thisStack->push(_operand);
break;
case II_POP_THIS:
_thisStack->pop();
break;
case II_PUSH_BY_EXP: {
str = _stack->pop()->getString();
ScValue *val = _stack->pop()->getProp(str);
if (val) {
_stack->push(val);
} else {
_stack->pushNULL();
}
break;
}
case II_POP_BY_EXP: {
str = _stack->pop()->getString();
ScValue *var = _stack->pop();
ScValue *val = _stack->pop();
if (val == nullptr) {
runtimeError("Script stack corruption detected. Please report this script at WME bug reports forum.");
var->setNULL();
} else {
var->setProp(str, val);
}
break;
}
case II_PUSH_REG1:
_stack->push(_reg1);
break;
case II_POP_REG1:
_reg1->copy(_stack->pop());
break;
case II_JMP:
_iP = getDWORD();
break;
case II_JMP_FALSE: {
dw = getDWORD();
//if (!_stack->pop()->getBool()) _iP = dw;
ScValue *val = _stack->pop();
if (!val) {
runtimeError("Script corruption detected. Did you use '=' instead of '==' for comparison?");
} else {
if (!val->getBool()) {
_iP = dw;
}
}
break;
}
case II_ADD:
op2 = _stack->pop();
op1 = _stack->pop();
if (op1->isNULL() || op2->isNULL()) {
_operand->setNULL();
} else if (op1->getType() == VAL_STRING || op2->getType() == VAL_STRING) {
char *tempStr = new char [strlen(op1->getString()) + strlen(op2->getString()) + 1];
strcpy(tempStr, op1->getString());
strcat(tempStr, op2->getString());
_operand->setString(tempStr);
delete[] tempStr;
} else if (op1->getType() == VAL_INT && op2->getType() == VAL_INT) {
_operand->setInt(op1->getInt() + op2->getInt());
} else {
_operand->setFloat(op1->getFloat() + op2->getFloat());
}
_stack->push(_operand);
break;
case II_SUB:
op2 = _stack->pop();
op1 = _stack->pop();
if (op1->isNULL() || op2->isNULL()) {
_operand->setNULL();
} else if (op1->getType() == VAL_INT && op2->getType() == VAL_INT) {
_operand->setInt(op1->getInt() - op2->getInt());
} else {
_operand->setFloat(op1->getFloat() - op2->getFloat());
}
_stack->push(_operand);
break;
case II_MUL:
op2 = _stack->pop();
op1 = _stack->pop();
if (op1->isNULL() || op2->isNULL()) {
_operand->setNULL();
} else if (op1->getType() == VAL_INT && op2->getType() == VAL_INT) {
_operand->setInt(op1->getInt() * op2->getInt());
} else {
_operand->setFloat(op1->getFloat() * op2->getFloat());
}
_stack->push(_operand);
break;
case II_DIV:
op2 = _stack->pop();
op1 = _stack->pop();
if (op2->getFloat() == 0.0f) {
runtimeError("Division by zero.");
}
if (op1->isNULL() || op2->isNULL() || op2->getFloat() == 0.0f) {
_operand->setNULL();
} else {
_operand->setFloat(op1->getFloat() / op2->getFloat());
}
_stack->push(_operand);
break;
case II_MODULO:
op2 = _stack->pop();
op1 = _stack->pop();
if (op2->getInt() == 0) {
runtimeError("Division by zero.");
}
if (op1->isNULL() || op2->isNULL() || op2->getInt() == 0) {
_operand->setNULL();
} else {
_operand->setInt(op1->getInt() % op2->getInt());
}
_stack->push(_operand);
break;
case II_NOT:
op1 = _stack->pop();
//if (op1->isNULL()) _operand->setNULL();
if (op1->isNULL()) {
_operand->setBool(true);
} else {
_operand->setBool(!op1->getBool());
}
_stack->push(_operand);
break;
case II_AND:
op2 = _stack->pop();
op1 = _stack->pop();
if (op1 == nullptr || op2 == nullptr) {
runtimeError("Script corruption detected. Did you use '=' instead of '==' for comparison?");
_operand->setBool(false);
} else {
_operand->setBool(op1->getBool() && op2->getBool());
}
_stack->push(_operand);
break;
case II_OR:
op2 = _stack->pop();
op1 = _stack->pop();
if (op1 == nullptr || op2 == nullptr) {
runtimeError("Script corruption detected. Did you use '=' instead of '==' for comparison?");
_operand->setBool(false);
} else {
_operand->setBool(op1->getBool() || op2->getBool());
}
_stack->push(_operand);
break;
case II_CMP_EQ:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if ((op1->isNULL() && !op2->isNULL()) || (!op1->isNULL() && op2->isNULL())) _operand->setBool(false);
else if (op1->isNative() && op2->isNative()) {
_operand->setBool(op1->getNative() == op2->getNative());
}
else if (op1->getType()==VAL_STRING || op2->getType()==VAL_STRING) {
_operand->setBool(scumm_stricmp(op1->getString(), op2->getString())==0);
}
else if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() == op2->getFloat());
}
else{
_operand->setBool(op1->getInt() == op2->getInt());
}
*/
_operand->setBool(ScValue::compare(op1, op2) == 0);
_stack->push(_operand);
break;
case II_CMP_NE:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if ((op1->isNULL() && !op2->isNULL()) || (!op1->isNULL() && op2->isNULL())) _operand->setBool(true);
else if (op1->isNative() && op2->isNative()) {
_operand->setBool(op1->getNative() != op2->getNative());
}
else if (op1->getType()==VAL_STRING || op2->getType()==VAL_STRING) {
_operand->setBool(scumm_stricmp(op1->getString(), op2->getString())!=0);
}
else if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() != op2->getFloat());
}
else{
_operand->setBool(op1->getInt() != op2->getInt());
}
*/
_operand->setBool(ScValue::compare(op1, op2) != 0);
_stack->push(_operand);
break;
case II_CMP_L:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() < op2->getFloat());
}
else _operand->setBool(op1->getInt() < op2->getInt());
*/
_operand->setBool(ScValue::compare(op1, op2) < 0);
_stack->push(_operand);
break;
case II_CMP_G:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() > op2->getFloat());
}
else _operand->setBool(op1->getInt() > op2->getInt());
*/
_operand->setBool(ScValue::compare(op1, op2) > 0);
_stack->push(_operand);
break;
case II_CMP_LE:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() <= op2->getFloat());
}
else _operand->setBool(op1->getInt() <= op2->getInt());
*/
_operand->setBool(ScValue::compare(op1, op2) <= 0);
_stack->push(_operand);
break;
case II_CMP_GE:
op2 = _stack->pop();
op1 = _stack->pop();
/*
if (op1->getType()==VAL_FLOAT && op2->getType()==VAL_FLOAT) {
_operand->setBool(op1->getFloat() >= op2->getFloat());
}
else _operand->setBool(op1->getInt() >= op2->getInt());
*/
_operand->setBool(ScValue::compare(op1, op2) >= 0);
_stack->push(_operand);
break;
case II_CMP_STRICT_EQ:
op2 = _stack->pop();
op1 = _stack->pop();
//_operand->setBool(op1->getType()==op2->getType() && op1->getFloat()==op2->getFloat());
_operand->setBool(ScValue::compareStrict(op1, op2) == 0);
_stack->push(_operand);
break;
case II_CMP_STRICT_NE:
op2 = _stack->pop();
op1 = _stack->pop();
//_operand->setBool(op1->getType()!=op2->getType() || op1->getFloat()!=op2->getFloat());
_operand->setBool(ScValue::compareStrict(op1, op2) != 0);
_stack->push(_operand);
break;
case II_DBG_LINE: {
int newLine = getDWORD();
if (newLine != _currentLine) {
_currentLine = newLine;
}
break;
}
default:
_gameRef->LOG(0, "Fatal: Invalid instruction %d ('%s', line %d, IP:0x%x)\n", inst, _filename, _currentLine, _iP - sizeof(uint32));
_state = SCRIPT_FINISHED;
ret = STATUS_FAILED;
} // switch(instruction)
//delete op;
return ret;
}
bool ScScript::initTables() {
uint32 origIP = _iP;
readHeader();
// load symbol table
_iP = _header.symbolTable;
_numSymbols = getDWORD();
_symbols = new char*[_numSymbols];
for (uint32 i = 0; i < _numSymbols; i++) {
uint32 index = getDWORD();
_symbols[index] = getString();
}
// load functions table
_iP = _header.funcTable;
_numFunctions = getDWORD();
_functions = new TFunctionPos[_numFunctions];
for (uint32 i = 0; i < _numFunctions; i++) {
_functions[i].pos = getDWORD();
_functions[i].name = getString();
}
// load events table
_iP = _header.eventTable;
_numEvents = getDWORD();
_events = new TEventPos[_numEvents];
for (uint32 i = 0; i < _numEvents; i++) {
_events[i].pos = getDWORD();
_events[i].name = getString();
}
// load externals
if (_header.version >= 0x0101) {
_iP = _header.externalsTable;
_numExternals = getDWORD();
_externals = new TExternalFunction[_numExternals];
for (uint32 i = 0; i < _numExternals; i++) {
_externals[i].dll_name = getString();
_externals[i].name = getString();
_externals[i].call_type = (TCallType)getDWORD();
_externals[i].returns = (TExternalType)getDWORD();
_externals[i].nu_params = getDWORD();
if (_externals[i].nu_params > 0) {
_externals[i].params = new TExternalType[_externals[i].nu_params];
for (int j = 0; j < _externals[i].nu_params; j++) {
_externals[i].params[j] = (TExternalType)getDWORD();
}
}
}
}
// load method table
_iP = _header.methodTable;
_numMethods = getDWORD();
_methods = new TMethodPos[_numMethods];
for (uint32 i = 0; i < _numMethods; i++) {
_methods[i].pos = getDWORD();
_methods[i].name = getString();
}
_iP = origIP;
return STATUS_OK;
}
int RegistryObject::getInt(const char* pszSubKey, const char* pszValue)
{
return static_cast<int>(getDWORD(pszSubKey,pszValue));
}
