src/subgame.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2012 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   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 2 of the License, or
   8 (at your option) any later version.
   9
  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.
  14
  15 You should have received a copy of the GNU General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "subgame.h"
  21 #include "porting.h"
  22 #include "filesys.h"
  23 #include "settings.h"
  24 #include "log.h"
  25
  26 SubgameSpec findSubgame(const std::string &id)
  27 {
  28         if(id == "")
  29                 return SubgameSpec();
  30         std::string share_server = porting::path_share + DIR_DELIM + "server";
  31         std::string user_server = porting::path_user + DIR_DELIM + "server";
  32         // Find game directory
  33         std::string game_path =
  34                         user_server + DIR_DELIM + "games" + DIR_DELIM + id;
  35         bool user_game = true; // Game is in user's directory
  36         if(!fs::PathExists(game_path)){
  37                 game_path = share_server + DIR_DELIM + "games" + DIR_DELIM + id;
  38                 user_game = false;
  39         }
  40         if(!fs::PathExists(game_path))
  41                 return SubgameSpec();
  42         // Find addon directories
  43         std::set<std::string> addon_paths;
  44         if(!user_game)
  45                 addon_paths.insert(share_server + DIR_DELIM + "addons"
  46                                 + DIR_DELIM + id);
  47         addon_paths.insert(user_server + DIR_DELIM + "addons"
  48                         + DIR_DELIM + id);
  49         // TODO: Read proper name from game_path/game.conf
  50         std::string game_name = id;
  51         return SubgameSpec(id, game_path, addon_paths, game_name);
  52 }
  53
  54 std::set<std::string> getAvailableGameIds()
  55 {
  56         std::set<std::string> gameids;
  57         std::set<std::string> gamespaths;
  58         gamespaths.insert(porting::path_share + DIR_DELIM + "server"
  59                         + DIR_DELIM + "games");
  60         gamespaths.insert(porting::path_user + DIR_DELIM + "server"
  61                         + DIR_DELIM + "games");
  62         for(std::set<std::string>::const_iterator i = gamespaths.begin();
  63                         i != gamespaths.end(); i++){
  64                 std::vector<fs::DirListNode> dirlist = fs::GetDirListing(*i);
  65                 for(u32 j=0; j<dirlist.size(); j++){
  66                         if(!dirlist[j].dir)
  67                                 continue;
  68                         gameids.insert(dirlist[j].name);
  69                 }
  70         }
  71         return gameids;
  72 }
  73
  74 std::vector<SubgameSpec> getAvailableGames()
  75 {
  76         std::vector<SubgameSpec> specs;
  77         std::set<std::string> gameids = getAvailableGameIds();
  78         for(std::set<std::string>::const_iterator i = gameids.begin();
  79                         i != gameids.end(); i++)
  80                 specs.push_back(findSubgame(*i));
  81         return specs;
  82 }
  83
  84 #define LEGACY_GAMEID "mesetint"
  85
  86 std::string getWorldGameId(const std::string &world_path, bool can_be_legacy)
  87 {
  88         std::string conf_path = world_path + DIR_DELIM + "world.mt";
  89         Settings conf;
  90         bool succeeded = conf.readConfigFile(conf_path.c_str());
  91         if(!succeeded){
  92                 if(can_be_legacy){
  93                         // If map_meta.txt exists, it is probably an old minetest world
  94                         if(fs::PathExists(world_path + DIR_DELIM + "map_meta.txt"))
  95                                 return LEGACY_GAMEID;
  96                 }
  97                 return "";
  98         }
  99         if(!conf.exists("gameid"))
 100                 return "";
 101         return conf.get("gameid");
 102 }
 103
 104 std::vector<WorldSpec> getAvailableWorlds()
 105 {
 106         std::vector<WorldSpec> worlds;
 107         std::set<std::string> worldspaths;
 108         worldspaths.insert(porting::path_user + DIR_DELIM + "server"
 109                         + DIR_DELIM + "worlds");
 110         infostream<<"Searching worlds..."<<std::endl;
 111         for(std::set<std::string>::const_iterator i = worldspaths.begin();
 112                         i != worldspaths.end(); i++){
 113                 infostream<<"  In "<<(*i)<<": "<<std::endl;
 114                 std::vector<fs::DirListNode> dirvector = fs::GetDirListing(*i);
 115                 for(u32 j=0; j<dirvector.size(); j++){
 116                         if(!dirvector[j].dir)
 117                                 continue;
 118                         std::string fullpath = *i + DIR_DELIM + dirvector[j].name;
 119                         std::string name = dirvector[j].name;
 120                         std::string gameid = getWorldGameId(fullpath);
 121                         WorldSpec spec(fullpath, name, gameid);
 122                         if(!spec.isValid()){
 123                                 infostream<<"(invalid: "<<name<<") ";
 124                         } else {
 125                                 infostream<<name<<" ";
 126                                 worlds.push_back(spec);
 127                         }
 128                 }
 129                 infostream<<std::endl;
 130         }
 131         // Check old world location
 132         do{
 133                 std::string fullpath = porting::path_user + DIR_DELIM + ".."
 134                                 + DIR_DELIM + "world";
 135                 if(!fs::PathExists(fullpath))
 136                         break;
 137                 std::string name = "Old World";
 138                 std::string gameid = getWorldGameId(fullpath, true);
 139                 WorldSpec spec(fullpath, name, gameid);
 140                 infostream<<"Old world found."<<std::endl;
 141                 worlds.push_back(spec);
 142         }while(0);
 143         infostream<<worlds.size()<<" found."<<std::endl;
 144         return worlds;
 145 }
 146
 147 bool initializeWorld(const std::string &path, const std::string &gameid)
 148 {
 149         infostream<<"Initializing world at "<<path<<std::endl;
 150         // Create world.mt if does not already exist
 151         std::string worldmt_path = path + DIR_DELIM + "world.mt";
 152         if(!fs::PathExists(worldmt_path)){
 153                 infostream<<"Creating world.mt ("<<worldmt_path<<")"<<std::endl;
 154                 fs::CreateAllDirs(path);
 155                 std::ofstream of(worldmt_path.c_str(), std::ios::binary);
 156                 of<<"gameid = "<<gameid<<"\n";
 157         }
 158         return true;
 159 }
 160
 161