2 // Copyright (C) 2006 Matthias Braun <matze@braunis.de>
3 // 2014 Ingo Ruhnke <grumbel@gmx.de>
5 // This program is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // This program is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "supertux/savegame.hpp"
20 #include "lisp/lisp.hpp"
21 #include "lisp/parser.hpp"
22 #include "lisp/writer.hpp"
23 #include "physfs/ifile_streambuf.hpp"
24 #include "scripting/serialize.hpp"
25 #include "scripting/squirrel_util.hpp"
26 #include "scripting/squirrel_util.hpp"
27 #include "supertux/player_status.hpp"
28 #include "util/file_system.hpp"
29 #include "util/log.hpp"
30 #include "worldmap/worldmap.hpp"
34 void get_table_entry(HSQUIRRELVM vm, const std::string& name)
36 sq_pushstring(vm, name.c_str(), -1);
37 if(SQ_FAILED(sq_get(vm, -2)))
39 throw std::runtime_error("failed to get '" + name + "' table entry");
43 // successfully placed result on stack
47 std::vector<std::string> get_table_keys(HSQUIRRELVM vm)
49 std::vector<std::string> worlds;
52 while(SQ_SUCCEEDED(sq_next(vm, -2)))
54 //here -1 is the value and -2 is the key
56 if(SQ_FAILED(sq_getstring(vm, -2, &result)))
58 std::ostringstream msg;
59 msg << "Couldn't get string value for key";
60 throw scripting::SquirrelError(vm, msg.str());
64 worlds.push_back(result);
67 // pops key and val before the next iteration
74 std::vector<LevelState> get_level_states(HSQUIRRELVM vm)
76 std::vector<LevelState> results;
79 while(SQ_SUCCEEDED(sq_next(vm, -2)))
81 //here -1 is the value and -2 is the key
83 if(SQ_FAILED(sq_getstring(vm, -2, &result)))
85 std::ostringstream msg;
86 msg << "Couldn't get string value";
87 throw scripting::SquirrelError(vm, msg.str());
91 LevelState level_state;
92 level_state.filename = result;
93 scripting::get_bool(vm, "solved", level_state.solved);
94 scripting::get_bool(vm, "perfect", level_state.perfect);
96 results.push_back(level_state);
99 // pops key and val before the next iteration
108 Savegame::Savegame(const std::string& filename) :
109 m_filename(filename),
110 m_player_status(new PlayerStatus)
114 Savegame::~Savegame()
121 if (m_filename.empty())
123 log_debug << "no filename set for savegame, skipping load" << std::endl;
127 if(!PHYSFS_exists(m_filename.c_str()))
129 log_info << m_filename << ": doesn't exist, not loading state" << std::endl;
133 log_debug << "loading savegame from " << m_filename << std::endl;
137 HSQUIRRELVM vm = scripting::global_vm;
140 const lisp::Lisp* root = parser.parse(m_filename);
142 const lisp::Lisp* lisp = root->get_lisp("supertux-savegame");
145 throw std::runtime_error("file is not a supertux-savegame file");
150 lisp->get("version", version);
153 throw std::runtime_error("incompatible savegame version");
157 const lisp::Lisp* tux = lisp->get_lisp("tux");
160 throw std::runtime_error("No tux section in savegame");
163 m_player_status->read(*tux);
166 const lisp::Lisp* state = lisp->get_lisp("state");
169 throw std::runtime_error("No state section in savegame");
173 // delete existing state table, if it exists
174 sq_pushroottable(vm);
175 sq_pushstring(vm, "state", -1);
176 if(SQ_FAILED(sq_deleteslot(vm, -2, SQFalse)))
179 // create a new empty state table
180 sq_pushstring(vm, "state", -1);
182 scripting::load_squirrel_table(vm, -1, *state);
183 if(SQ_FAILED(sq_createslot(vm, -3)))
184 throw std::runtime_error("Couldn't create state table");
190 catch(const std::exception& e)
192 log_fatal << "Couldn't load savegame: " << e.what() << std::endl;
200 if (m_filename.empty())
202 log_debug << "no filename set for savegame, skipping save" << std::endl;
206 log_debug << "saving savegame to " << m_filename << std::endl;
208 { // make sure the savegame directory exists
209 std::string dirname = FileSystem::dirname(m_filename);
210 if(!PHYSFS_exists(dirname.c_str()))
212 if(!PHYSFS_mkdir(dirname.c_str()))
214 std::ostringstream msg;
215 msg << "Couldn't create directory for savegames '"
216 << dirname << "': " <<PHYSFS_getLastError();
217 throw std::runtime_error(msg.str());
221 if(!PHYSFS_isDirectory(dirname.c_str()))
223 std::ostringstream msg;
224 msg << "Savegame path '" << dirname << "' is not a directory";
225 throw std::runtime_error(msg.str());
229 HSQUIRRELVM vm = scripting::global_vm;
231 lisp::Writer writer(m_filename);
233 writer.start_list("supertux-savegame");
234 writer.write("version", 1);
236 using namespace worldmap;
237 if(WorldMap::current() != NULL)
239 std::ostringstream title;
240 title << WorldMap::current()->get_title();
241 title << " (" << WorldMap::current()->solved_level_count()
242 << "/" << WorldMap::current()->level_count() << ")";
243 writer.write("title", title.str());
246 writer.start_list("tux");
247 m_player_status->write(writer);
248 writer.end_list("tux");
250 writer.start_list("state");
252 sq_pushroottable(vm);
253 sq_pushstring(vm, "state", -1);
254 if(SQ_SUCCEEDED(sq_get(vm, -2)))
256 scripting::save_squirrel_table(vm, -1, writer);
260 writer.end_list("state");
262 writer.end_list("supertux-savegame");
265 std::vector<std::string>
266 Savegame::get_worldmaps()
268 std::vector<std::string> worlds;
270 HSQUIRRELVM vm = scripting::global_vm;
271 int oldtop = sq_gettop(vm);
275 sq_pushroottable(vm);
276 get_table_entry(vm, "state");
277 get_table_entry(vm, "worlds");
278 worlds = get_table_keys(vm);
280 catch(const std::exception& err)
282 log_warning << err.what() << std::endl;
285 sq_settop(vm, oldtop);
291 Savegame::get_worldmap_state(const std::string& name)
293 WorldmapState result;
295 HSQUIRRELVM vm = scripting::global_vm;
296 int oldtop = sq_gettop(vm);
300 sq_pushroottable(vm);
301 get_table_entry(vm, "state");
302 get_table_entry(vm, "worlds");
303 get_table_entry(vm, name);
304 get_table_entry(vm, "levels");
306 result.level_states = get_level_states(vm);
308 catch(const std::exception& err)
310 log_warning << err.what() << std::endl;
313 sq_settop(vm, oldtop);
318 std::vector<std::string>
319 Savegame::get_levelsets()
321 std::vector<std::string> results;
323 HSQUIRRELVM vm = scripting::global_vm;
324 int oldtop = sq_gettop(vm);
328 sq_pushroottable(vm);
329 get_table_entry(vm, "state");
330 get_table_entry(vm, "levelsets");
331 results = get_table_keys(vm);
333 catch(const std::exception& err)
335 log_warning << err.what() << std::endl;
338 sq_settop(vm, oldtop);
344 Savegame::get_levelset_state(const std::string& name)
346 LevelsetState result;
348 HSQUIRRELVM vm = scripting::global_vm;
349 int oldtop = sq_gettop(vm);
353 sq_pushroottable(vm);
354 get_table_entry(vm, "state");
355 get_table_entry(vm, "levelsets");
356 get_table_entry(vm, name);
357 get_table_entry(vm, "levels");
359 result.level_states = get_level_states(vm);
361 catch(const std::exception& err)
363 log_warning << err.what() << std::endl;
366 sq_settop(vm, oldtop);