+// SuperTux
+// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+// 2014 Ingo Ruhnke <grumbel@gmx.de>
+//
+// 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 "supertux/world_state.hpp"
+
+#include "lisp/lisp.hpp"
+#include "lisp/parser.hpp"
+#include "lisp/writer.hpp"
+#include "physfs/ifile_streambuf.hpp"
+#include "scripting/serialize.hpp"
+#include "scripting/squirrel_util.hpp"
+#include "supertux/player_status.hpp"
+#include "util/file_system.hpp"
+#include "util/log.hpp"
+#include "worldmap/worldmap.hpp"
+
+WorldState::WorldState() :
+ m_player_status(new PlayerStatus)
+{
+}
+
+void
+WorldState::load(const std::string& filename)
+{
+ if(!PHYSFS_exists(filename.c_str()))
+ {
+ log_info << filename << ": doesn't exist, not loading state" << std::endl;
+ }
+ else
+ {
+ try
+ {
+ HSQUIRRELVM vm = scripting::global_vm;
+
+ lisp::Parser parser;
+ const lisp::Lisp* root = parser.parse(filename);
+
+ const lisp::Lisp* lisp = root->get_lisp("supertux-savegame");
+ if(lisp == NULL)
+ {
+ throw std::runtime_error("file is not a supertux-savegame file");
+ }
+ else
+ {
+ int version = 1;
+ lisp->get("version", version);
+ if(version != 1)
+ {
+ throw std::runtime_error("incompatible savegame version");
+ }
+ else
+ {
+ const lisp::Lisp* tux = lisp->get_lisp("tux");
+ if(tux == NULL)
+ {
+ throw std::runtime_error("No tux section in savegame");
+ }
+ {
+ m_player_status->read(*tux);
+ }
+
+ const lisp::Lisp* state = lisp->get_lisp("state");
+ if(state == NULL)
+ {
+ throw std::runtime_error("No state section in savegame");
+ }
+ else
+ {
+ sq_pushroottable(vm);
+ sq_pushstring(vm, "state", -1);
+ if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
+ sq_pop(vm, 1);
+
+ sq_pushstring(vm, "state", -1);
+ sq_newtable(vm);
+ scripting::load_squirrel_table(vm, -1, *state);
+ if(SQ_FAILED(sq_createslot(vm, -3)))
+ throw std::runtime_error("Couldn't create state table");
+ sq_pop(vm, 1);
+ }
+ }
+ }
+ }
+ catch(const std::exception& e)
+ {
+ log_fatal << "Couldn't load savegame: " << e.what() << std::endl;
+ }
+ }
+}
+
+void
+WorldState::save(const std::string& filename)
+{
+ { // make sure the savegame directory exists
+ std::string dirname = FileSystem::dirname(filename);
+ if(!PHYSFS_exists(dirname.c_str()))
+ {
+ if(!PHYSFS_mkdir(dirname.c_str()))
+ {
+ std::ostringstream msg;
+ msg << "Couldn't create directory for savegames '"
+ << dirname << "': " <<PHYSFS_getLastError();
+ throw std::runtime_error(msg.str());
+ }
+ }
+
+ if(!PHYSFS_isDirectory(dirname.c_str()))
+ {
+ std::ostringstream msg;
+ msg << "Savegame path '" << dirname << "' is not a directory";
+ throw std::runtime_error(msg.str());
+ }
+ }
+
+ HSQUIRRELVM vm = scripting::global_vm;
+
+ lisp::Writer writer(filename);
+
+ writer.start_list("supertux-savegame");
+ writer.write("version", 1);
+
+ using namespace worldmap;
+ if(WorldMap::current() != NULL)
+ {
+ std::ostringstream title;
+ title << WorldMap::current()->get_title();
+ title << " (" << WorldMap::current()->solved_level_count()
+ << "/" << WorldMap::current()->level_count() << ")";
+ writer.write("title", title.str());
+ }
+
+ writer.start_list("tux");
+ m_player_status->write(writer);
+ writer.end_list("tux");
+
+ writer.start_list("state");
+
+ sq_pushroottable(vm);
+ sq_pushstring(vm, "state", -1);
+ if(SQ_SUCCEEDED(sq_get(vm, -2)))
+ {
+ scripting::save_squirrel_table(vm, -1, writer);
+ sq_pop(vm, 1);
+ }
+ sq_pop(vm, 1);
+ writer.end_list("state");
+
+ writer.end_list("supertux-savegame");
+}
+
+/* EOF */