--- /dev/null
+// 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/savegame.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 "scripting/squirrel_util.hpp"
+#include "supertux/player_status.hpp"
+#include "util/file_system.hpp"
+#include "util/log.hpp"
+#include "worldmap/worldmap.hpp"
+
+namespace {
+
+void get_table_entry(HSQUIRRELVM vm, const std::string& name)
+{
+ sq_pushstring(vm, name.c_str(), -1);
+ if(SQ_FAILED(sq_get(vm, -2)))
+ {
+ throw std::runtime_error("failed to get '" + name + "' table entry");
+ }
+ else
+ {
+ // successfully placed result on stack
+ }
+}
+
+std::vector<std::string> get_table_keys(HSQUIRRELVM vm)
+{
+ std::vector<std::string> worlds;
+
+ sq_pushnull(vm);
+ while(SQ_SUCCEEDED(sq_next(vm, -2)))
+ {
+ //here -1 is the value and -2 is the key
+ const char* result;
+ if(SQ_FAILED(sq_getstring(vm, -2, &result)))
+ {
+ std::ostringstream msg;
+ msg << "Couldn't get string value for key";
+ throw scripting::SquirrelError(vm, msg.str());
+ }
+ else
+ {
+ worlds.push_back(result);
+ }
+
+ // pops key and val before the next iteration
+ sq_pop(vm, 2);
+ }
+
+ return worlds;
+}
+
+std::vector<LevelState> get_level_states(HSQUIRRELVM vm)
+{
+ std::vector<LevelState> results;
+
+ sq_pushnull(vm);
+ while(SQ_SUCCEEDED(sq_next(vm, -2)))
+ {
+ //here -1 is the value and -2 is the key
+ const char* result;
+ if(SQ_FAILED(sq_getstring(vm, -2, &result)))
+ {
+ std::ostringstream msg;
+ msg << "Couldn't get string value";
+ throw scripting::SquirrelError(vm, msg.str());
+ }
+ else
+ {
+ LevelState level_state;
+ level_state.filename = result;
+ scripting::get_bool(vm, "solved", level_state.solved);
+ scripting::get_bool(vm, "perfect", level_state.perfect);
+
+ results.push_back(level_state);
+ }
+
+ // pops key and val before the next iteration
+ sq_pop(vm, 2);
+ }
+
+ return results;
+}
+
+} // namespace
+
+Savegame::Savegame(const std::string& filename) :
+ m_filename(filename),
+ m_player_status(new PlayerStatus)
+{
+}
+
+Savegame::~Savegame()
+{
+}
+
+void
+Savegame::load()
+{
+ if (m_filename.empty())
+ {
+ log_debug << "no filename set for savegame, skipping load" << std::endl;
+ return;
+ }
+
+ if(!PHYSFS_exists(m_filename.c_str()))
+ {
+ log_info << m_filename << ": doesn't exist, not loading state" << std::endl;
+ }
+ else
+ {
+ log_debug << "loading savegame from " << m_filename << std::endl;
+
+ try
+ {
+ HSQUIRRELVM vm = scripting::global_vm;
+
+ lisp::Parser parser;
+ const lisp::Lisp* root = parser.parse(m_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
+ {
+ // delete existing state table, if it exists
+ sq_pushroottable(vm);
+ sq_pushstring(vm, "state", -1);
+ if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
+ sq_pop(vm, 1);
+
+ // create a new empty state table
+ 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
+Savegame::save()
+{
+ if (m_filename.empty())
+ {
+ log_debug << "no filename set for savegame, skipping save" << std::endl;
+ return;
+ }
+
+ log_debug << "saving savegame to " << m_filename << std::endl;
+
+ { // make sure the savegame directory exists
+ std::string dirname = FileSystem::dirname(m_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(m_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");
+}
+
+std::vector<std::string>
+Savegame::get_worldmaps()
+{
+ std::vector<std::string> worlds;
+
+ HSQUIRRELVM vm = scripting::global_vm;
+ int oldtop = sq_gettop(vm);
+
+ try
+ {
+ sq_pushroottable(vm);
+ get_table_entry(vm, "state");
+ get_table_entry(vm, "worlds");
+ worlds = get_table_keys(vm);
+ }
+ catch(const std::exception& err)
+ {
+ log_warning << err.what() << std::endl;
+ }
+
+ sq_settop(vm, oldtop);
+
+ return worlds;
+}
+
+WorldmapState
+Savegame::get_worldmap_state(const std::string& name)
+{
+ WorldmapState result;
+
+ HSQUIRRELVM vm = scripting::global_vm;
+ int oldtop = sq_gettop(vm);
+
+ try
+ {
+ sq_pushroottable(vm);
+ get_table_entry(vm, "state");
+ get_table_entry(vm, "worlds");
+ get_table_entry(vm, name);
+ get_table_entry(vm, "levels");
+
+ result.level_states = get_level_states(vm);
+ }
+ catch(const std::exception& err)
+ {
+ log_warning << err.what() << std::endl;
+ }
+
+ sq_settop(vm, oldtop);
+
+ return result;
+}
+
+std::vector<std::string>
+Savegame::get_levelsets()
+{
+ std::vector<std::string> results;
+
+ HSQUIRRELVM vm = scripting::global_vm;
+ int oldtop = sq_gettop(vm);
+
+ try
+ {
+ sq_pushroottable(vm);
+ get_table_entry(vm, "state");
+ get_table_entry(vm, "levelsets");
+ results = get_table_keys(vm);
+ }
+ catch(const std::exception& err)
+ {
+ log_warning << err.what() << std::endl;
+ }
+
+ sq_settop(vm, oldtop);
+
+ return results;
+}
+
+LevelsetState
+Savegame::get_levelset_state(const std::string& name)
+{
+ LevelsetState result;
+
+ HSQUIRRELVM vm = scripting::global_vm;
+ int oldtop = sq_gettop(vm);
+
+ try
+ {
+ sq_pushroottable(vm);
+ get_table_entry(vm, "state");
+ get_table_entry(vm, "levelsets");
+ get_table_entry(vm, name);
+ get_table_entry(vm, "levels");
+
+ result.level_states = get_level_states(vm);
+ }
+ catch(const std::exception& err)
+ {
+ log_warning << err.what() << std::endl;
+ }
+
+ sq_settop(vm, oldtop);
+
+ return result;
+}
+
+/* EOF */
projects / supertux.git / blobdiff