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 = porting::path_share;
  31         std::string user = porting::path_user;
  32         // Find game directory
  33         std::string game_path = user + DIR_DELIM + "games" + DIR_DELIM + id;
  34         bool user_game = true; // Game is in user's directory
  35         if(!fs::PathExists(game_path)){
  36                 game_path = share + DIR_DELIM + "games" + DIR_DELIM + id;
  37                 user_game = false;
  38         }
  39         if(!fs::PathExists(game_path))
  40                 return SubgameSpec();
  41         // Find mod directories
  42         std::set<std::string> mods_paths;
  43         mods_paths.insert(game_path + DIR_DELIM + "mods");
  44         if(!user_game)
  45                 mods_paths.insert(share + DIR_DELIM + "mods" + DIR_DELIM + id);
  46         if(user != share || user_game)
  47                 mods_paths.insert(user + DIR_DELIM + "mods" + DIR_DELIM + id);
  48         // TODO: Read proper name from game_path/game.conf
  49         std::string game_name = id;
  50         return SubgameSpec(id, game_path, mods_paths, game_name);
  51 }
  52
  53 std::set<std::string> getAvailableGameIds()
  54 {
  55         std::set<std::string> gameids;
  56         std::set<std::string> gamespaths;
  57         gamespaths.insert(porting::path_share + DIR_DELIM + "games");
  58         gamespaths.insert(porting::path_user + DIR_DELIM + "games");
  59         for(std::set<std::string>::const_iterator i = gamespaths.begin();
  60                         i != gamespaths.end(); i++){
  61                 std::vector<fs::DirListNode> dirlist = fs::GetDirListing(*i);
  62                 for(u32 j=0; j<dirlist.size(); j++){
  63                         if(!dirlist[j].dir)
  64                                 continue;
  65                         gameids.insert(dirlist[j].name);
  66                 }
  67         }
  68         return gameids;
  69 }
  70
  71 std::vector<SubgameSpec> getAvailableGames()
  72 {
  73         std::vector<SubgameSpec> specs;
  74         std::set<std::string> gameids = getAvailableGameIds();
  75         for(std::set<std::string>::const_iterator i = gameids.begin();
  76                         i != gameids.end(); i++)
  77                 specs.push_back(findSubgame(*i));
  78         return specs;
  79 }
  80
  81 #define LEGACY_GAMEID "mesetint"
  82
  83 std::string getWorldGameId(const std::string &world_path, bool can_be_legacy)
  84 {
  85         std::string conf_path = world_path + DIR_DELIM + "world.mt";
  86         Settings conf;
  87         bool succeeded = conf.readConfigFile(conf_path.c_str());
  88         if(!succeeded){
  89                 if(can_be_legacy){
  90                         // If map_meta.txt exists, it is probably an old minetest world
  91                         if(fs::PathExists(world_path + DIR_DELIM + "map_meta.txt"))
  92                                 return LEGACY_GAMEID;
  93                 }
  94                 return "";
  95         }
  96         if(!conf.exists("gameid"))
  97                 return "";
  98         return conf.get("gameid");
  99 }
 100
 101 std::vector<WorldSpec> getAvailableWorlds()
 102 {
 103         std::vector<WorldSpec> worlds;
 104         std::set<std::string> worldspaths;
 105         worldspaths.insert(porting::path_user + DIR_DELIM + "worlds");
 106         infostream<<"Searching worlds..."<<std::endl;
 107         for(std::set<std::string>::const_iterator i = worldspaths.begin();
 108                         i != worldspaths.end(); i++){
 109                 infostream<<"  In "<<(*i)<<": "<<std::endl;
 110                 std::vector<fs::DirListNode> dirvector = fs::GetDirListing(*i);
 111                 for(u32 j=0; j<dirvector.size(); j++){
 112                         if(!dirvector[j].dir)
 113                                 continue;
 114                         std::string fullpath = *i + DIR_DELIM + dirvector[j].name;
 115                         std::string name = dirvector[j].name;
 116                         std::string gameid = getWorldGameId(fullpath);
 117                         WorldSpec spec(fullpath, name, gameid);
 118                         if(!spec.isValid()){
 119                                 infostream<<"(invalid: "<<name<<") ";
 120                         } else {
 121                                 infostream<<name<<" ";
 122                                 worlds.push_back(spec);
 123                         }
 124                 }
 125                 infostream<<std::endl;
 126         }
 127         // Check old world location
 128         do{
 129                 std::string fullpath = porting::path_user + DIR_DELIM + "world";
 130                 if(!fs::PathExists(fullpath))
 131                         break;
 132                 std::string name = "Old World";
 133                 std::string gameid = getWorldGameId(fullpath, true);
 134                 WorldSpec spec(fullpath, name, gameid);
 135                 infostream<<"Old world found."<<std::endl;
 136                 worlds.push_back(spec);
 137         }while(0);
 138         infostream<<worlds.size()<<" found."<<std::endl;
 139         return worlds;
 140 }
 141
 142 bool initializeWorld(const std::string &path, const std::string &gameid)
 143 {
 144         infostream<<"Initializing world at "<<path<<std::endl;
 145         // Create world.mt if does not already exist
 146         std::string worldmt_path = path + DIR_DELIM + "world.mt";
 147         if(!fs::PathExists(worldmt_path)){
 148                 infostream<<"Creating world.mt ("<<worldmt_path<<")"<<std::endl;
 149                 fs::CreateAllDirs(path);
 150                 std::ofstream of(worldmt_path.c_str(), std::ios::binary);
 151                 of<<"gameid = "<<gameid<<"\n";
 152         }
 153         return true;
 154 }
 155
 156