void CProjectItem::loadGame(int slotId) {
CompressedFile file;
// Clear any existing project contents and call preload code
preLoad();
clear();
// Open either an existing savegame slot or the new game template
if (slotId >= 0) {
Common::InSaveFile *saveFile = g_system->getSavefileManager()->openForLoading(
g_vm->generateSaveName(slotId));
file.open(saveFile);
} else {
Common::File *newFile = new Common::File();
if (!newFile->open("newgame.st"))
error("Could not open newgame.st");
file.open(newFile);
}
// Load the savegame header in
TitanicSavegameHeader header;
readSavegameHeader(&file, header);
delete header._thumbnail;
// Load the contents in
CProjectItem *newProject = loadData(&file);
file.IsClassStart();
getGameManager()->load(&file);
file.close();
// Clear existing project
clear();
// Detach each item under the loaded project, and re-attach them
// to the existing project instance (this)
CTreeItem *item;
while ((item = newProject->getFirstChild()) != nullptr) {
item->detach();
item->addUnder(this);
}
// Loaded project instance is no longer needed
newProject->destroyAll();
// Post-load processing
postLoad();
}
CProjectItem *CProjectItem::loadData(SimpleFile *file) {
if (!file->IsClassStart())
return nullptr;
CProjectItem *root = nullptr;
CTreeItem *parent = nullptr;
CTreeItem *item = nullptr;
do {
CString entryString = file->readString();
if (entryString == "ALONG") {
// Move along, nothing needed
} else if (entryString == "UP") {
// Move up
if (parent == nullptr ||
(parent = parent->getParent()) == nullptr)
break;
} else if (entryString == "DOWN") {
// Move down
if (parent == nullptr)
parent = item;
else
parent = parent->getLastChild();
} else {
// Create new class instance
item = dynamic_cast<CTreeItem *>(CSaveableObject::createInstance(entryString));
assert(item);
if (root) {
// Already created root project
item->addUnder(parent);
} else {
root = dynamic_cast<CProjectItem *>(item);
assert(root);
root->_filename = _filename;
}
// Load the data for the item
item->load(file);
}
file->IsClassStart();
} while (file->IsClassStart());
return root;
}