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engines/ultima/ultima8/kernel/object.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/>.
+ *
+ */
+
+#include "ultima/ultima8/kernel/object.h"
+#include "ultima/ultima8/kernel/kernel.h"
+#include "ultima/ultima8/kernel/object_manager.h"
+#include "ultima/ultima8/usecode/uc_process.h"
+#include "ultima/ultima8/usecode/uc_machine.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+DEFINE_RUNTIME_CLASSTYPE_CODE(Object)
+
+Object::~Object() {
+	if (_objId != 0xFFFF)
+		ObjectManager::get_instance()->clearObjId(_objId);
+}
+
+ObjId Object::assignObjId() {
+	if (_objId == 0xFFFF)
+		_objId = ObjectManager::get_instance()->assignObjId(this);
+	return _objId;
+}
+
+void Object::clearObjId() {
+	// On clearObjId we kill all processes that belonged to us
+	Kernel::get_instance()->killProcesses(_objId, Kernel::PROC_TYPE_ALL, true);
+
+	if (_objId != 0xFFFF)
+		ObjectManager::get_instance()->clearObjId(_objId);
+	_objId = 0xFFFF;
+}
+
+Common::String Object::dumpInfo() const {
+	return Common::String::format("Object %d (class %s)", getObjId(), GetClassType()._className);
+}
+
+ProcId Object::callUsecode(uint16 classid, uint16 offset,
+						   const uint8 *args, int argsize) {
+	uint32 objptr = UCMachine::objectToPtr(getObjId());
+	UCProcess *p = new UCProcess(classid, offset, objptr, 2, args, argsize);
+	return Kernel::get_instance()->addProcess(p);
+}
+
+void Object::saveData(Common::WriteStream *ws) {
+	// note: Object is unversioned. If we ever want to version it,
+	// increase the global savegame version
+
+	ws->writeUint16LE(_objId);
+}
+
+bool Object::loadData(Common::ReadStream *rs, uint32 version) {
+	// If we are loading into an object that already got an ID defined, then
+	// there is a problem - default constructors should not allocate object
+	// IDs, otherwise we can end up with the wrong IDs during load, because
+	// we blindly reload the old object IDs and then assign the kernel pointer
+	// table using those.
+	assert(_objId == 0xFFFF);
+
+	_objId = rs->readUint16LE();
+
+	return true;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima