Initial commit

engines/wintermute/system/sys_class.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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+/*
+ * This file is based on WME Lite.
+ * http://dead-code.org/redir.php?target=wmelite
+ * Copyright (c) 2011 Jan Nedoma
+ */
+
+#include "engines/wintermute/persistent.h"
+#include "engines/wintermute/system/sys_instance.h"
+#include "engines/wintermute/system/sys_class.h"
+#include "engines/wintermute/system/sys_class_registry.h"
+#include "engines/wintermute/base/base_game.h"
+#include "engines/wintermute/base/base_persistence_manager.h"
+
+namespace Wintermute {
+
+//////////////////////////////////////////////////////////////////////////
+SystemClass::SystemClass(const AnsiString &name, PERSISTBUILD build, PERSISTLOAD load, bool persistentClass) {
+	_name = name;
+
+	_build = build;
+	_load = load;
+	_next = nullptr;
+	_savedId = -1;
+	_persistent = persistentClass;
+	_numInst = 0;
+
+	SystemClassRegistry::getInstance()->registerClass(this);
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+SystemClass::~SystemClass() {
+	SystemClassRegistry::getInstance()->unregisterClass(this);
+	removeAllInstances();
+}
+
+//////////////////////////////////////////////////////////////////////////
+bool SystemClass::removeAllInstances() {
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		delete(it->_value);
+	}
+	_instances.clear();
+	_instanceMap.clear();
+
+	return true;
+}
+
+//////////////////////////////////////////////////////////////////////////
+SystemInstance *SystemClass::addInstance(void *instance, int id, int savedId) {
+	SystemInstance *inst = new SystemInstance(instance, id, this);
+	inst->setSavedId(savedId);
+	_instances[inst] = (inst);
+
+	_instanceMap[instance] = inst;
+
+	SystemClassRegistry::getInstance()->addInstanceToTable(inst, instance);
+
+	return inst;
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+bool SystemClass::removeInstance(void *instance) {
+	InstanceMap::iterator mapIt = _instanceMap.find(instance);
+	if (mapIt == _instanceMap.end()) {
+		return false;
+	}
+
+	Instances::iterator it = _instances.find((mapIt->_value));
+	if (it != _instances.end()) {
+		delete(it->_value);
+		_instances.erase(it);
+	}
+
+	_instanceMap.erase(mapIt);
+
+	return false;
+}
+
+//////////////////////////////////////////////////////////////////////////
+int SystemClass::getInstanceId(void *pointer) {
+	InstanceMap::iterator mapIt = _instanceMap.find(pointer);
+	if (mapIt == _instanceMap.end()) {
+		return -1;
+	} else {
+		return (mapIt->_value)->getId();
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+void *SystemClass::idToPointer(int savedID) {
+	//slow
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		if ((it->_value)->getSavedId() == savedID) {
+			return (it->_value)->getInstance();
+		}
+	}
+	return nullptr;
+}
+
+//////////////////////////////////////////////////////////////////////////
+int SystemClass::getNumInstances() {
+	return _instances.size();
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::dump(Common::WriteStream *stream) {
+	Common::String str;
+	str = Common::String::format("%03d %c %-20s instances: %d\n", _id, _persistent ? 'p' : ' ', _name.c_str(), getNumInstances());
+	stream->write(str.c_str(), str.size());
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::saveTable(BaseGame *game, BasePersistenceManager *persistMgr) {
+	persistMgr->putString(_name.c_str());
+	persistMgr->putDWORD(_id);
+	persistMgr->putDWORD(_instances.size());
+
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		persistMgr->putDWORD((it->_value)->getId());
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::loadTable(BaseGame *game, BasePersistenceManager *persistMgr) {
+	_savedId = persistMgr->getDWORD();
+	int numInstances = persistMgr->getDWORD();
+
+	for (int i = 0; i < numInstances; i++) {
+		int instId = persistMgr->getDWORD();
+		if (_persistent) {
+
+			if (i > 0) {
+				game->LOG(0, "Warning: attempting to load multiple instances of persistent class %s (%d)", _name.c_str(), numInstances);
+				continue;
+			}
+
+			Instances::iterator it = _instances.begin();
+			if (it != _instances.end()) {
+				(it->_value)->setSavedId(instId);
+				SystemClassRegistry::getInstance()->addInstanceToTable((it->_value), (it->_value)->getInstance());
+			} else {
+				game->LOG(0, "Warning: instance %d of persistent class %s not found", i, _name.c_str());
+			}
+		}
+		// normal instances, create empty objects
+		else {
+			void *emptyObject = _build();
+			addInstance(emptyObject, SystemClassRegistry::getInstance()->getNextId(), instId);
+		}
+
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::saveInstances(BaseGame *game, BasePersistenceManager *persistMgr) {
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		// write instace header
+		persistMgr->putString("<INSTANCE_HEAD>");
+		persistMgr->putDWORD(_id);
+		persistMgr->putDWORD((it->_value)->getId());
+		persistMgr->putString("</INSTANCE_HEAD>");
+		_load((it->_value)->getInstance(), persistMgr);
+		persistMgr->putString("</INSTANCE>");
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::loadInstance(void *instance, BasePersistenceManager *persistMgr) {
+	_load(instance, persistMgr);
+}
+
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::resetSavedIDs() {
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		(it->_value)->setSavedId(-1);
+	}
+}
+
+//////////////////////////////////////////////////////////////////////////
+void SystemClass::instanceCallback(SYS_INSTANCE_CALLBACK lpCallback, void *lpData) {
+	Instances::iterator it;
+	for (it = _instances.begin(); it != _instances.end(); ++it) {
+		lpCallback((it->_value)->getInstance(), lpData);
+	}
+}
+
+} // End of namespace Wintermute