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 std::string getGameName(const std::string &game_path)
  27 {
  28         std::string conf_path = game_path + DIR_DELIM + "game.conf";
  29         Settings conf;
  30         bool succeeded = conf.readConfigFile(conf_path.c_str());
  31         if(!succeeded)
  32                 return "";
  33         if(!conf.exists("name"))
  34                 return "";
  35         return conf.get("name");
  36 }
  37
  38 SubgameSpec findSubgame(const std::string &id)
  39 {
  40         if(id == "")
  41                 return SubgameSpec();
  42         std::string share = porting::path_share;
  43         std::string user = porting::path_user;
  44         // Find game directory
  45         std::string game_path = user + DIR_DELIM + "games" + DIR_DELIM + id;
  46         bool user_game = true; // Game is in user's directory
  47         if(!fs::PathExists(game_path)){
  48                 game_path = share + DIR_DELIM + "games" + DIR_DELIM + id;
  49                 user_game = false;
  50         }
  51         if(!fs::PathExists(game_path))
  52                 return SubgameSpec();
  53         // Find mod directories
  54         std::set<std::string> mods_paths;
  55         mods_paths.insert(game_path + DIR_DELIM + "mods");
  56         if(!user_game)
  57                 mods_paths.insert(share + DIR_DELIM + "mods" + DIR_DELIM + id);
  58         if(user != share || user_game)
  59                 mods_paths.insert(user + DIR_DELIM + "mods" + DIR_DELIM + id);
  60         // TODO: Read proper name from game_path/game.conf
  61         std::string game_name = getGameName(game_path);
  62         if(game_name == "")
  63                 game_name = id;
  64         return SubgameSpec(id, game_path, mods_paths, game_name);
  65 }
  66
  67 std::set<std::string> getAvailableGameIds()
  68 {
  69         std::set<std::string> gameids;
  70         std::set<std::string> gamespaths;
  71         gamespaths.insert(porting::path_share + DIR_DELIM + "games");
  72         gamespaths.insert(porting::path_user + DIR_DELIM + "games");
  73         for(std::set<std::string>::const_iterator i = gamespaths.begin();
  74                         i != gamespaths.end(); i++){
  75                 std::vector<fs::DirListNode> dirlist = fs::GetDirListing(*i);
  76                 for(u32 j=0; j<dirlist.size(); j++){
  77                         if(!dirlist[j].dir)
  78                                 continue;
  79                         gameids.insert(dirlist[j].name);
  80                 }
  81         }
  82         return gameids;
  83 }
  84
  85 std::vector<SubgameSpec> getAvailableGames()
  86 {
  87         std::vector<SubgameSpec> specs;
  88         std::set<std::string> gameids = getAvailableGameIds();
  89         for(std::set<std::string>::const_iterator i = gameids.begin();
  90                         i != gameids.end(); i++)
  91                 specs.push_back(findSubgame(*i));
  92         return specs;
  93 }
  94
  95 #define LEGACY_GAMEID "minetest"
  96
  97 bool getWorldExists(const std::string &world_path)
  98 {
  99         return (fs::PathExists(world_path + DIR_DELIM + "map_meta.txt") ||
 100                         fs::PathExists(world_path + DIR_DELIM + "world.mt"));
 101 }
 102
 103 std::string getWorldGameId(const std::string &world_path, bool can_be_legacy)
 104 {
 105         std::string conf_path = world_path + DIR_DELIM + "world.mt";
 106         Settings conf;
 107         bool succeeded = conf.readConfigFile(conf_path.c_str());
 108         if(!succeeded){
 109                 if(can_be_legacy){
 110                         // If map_meta.txt exists, it is probably an old minetest world
 111                         if(fs::PathExists(world_path + DIR_DELIM + "map_meta.txt"))
 112                                 return LEGACY_GAMEID;
 113                 }
 114                 return "";
 115         }
 116         if(!conf.exists("gameid"))
 117                 return "";
 118         // The "mesetint" gameid has been discarded
 119         if(conf.get("gameid") == "mesetint")
 120                 return "minetest";
 121         return conf.get("gameid");
 122 }
 123
 124 std::vector<WorldSpec> getAvailableWorlds()
 125 {
 126         std::vector<WorldSpec> worlds;
 127         std::set<std::string> worldspaths;
 128         worldspaths.insert(porting::path_user + DIR_DELIM + "worlds");
 129         infostream<<"Searching worlds..."<<std::endl;
 130         for(std::set<std::string>::const_iterator i = worldspaths.begin();
 131                         i != worldspaths.end(); i++){
 132                 infostream<<"  In "<<(*i)<<": "<<std::endl;
 133                 std::vector<fs::DirListNode> dirvector = fs::GetDirListing(*i);
 134                 for(u32 j=0; j<dirvector.size(); j++){
 135                         if(!dirvector[j].dir)
 136                                 continue;
 137                         std::string fullpath = *i + DIR_DELIM + dirvector[j].name;
 138                         std::string name = dirvector[j].name;
 139                         // Just allow filling in the gameid always for now
 140                         bool can_be_legacy = true;
 141                         std::string gameid = getWorldGameId(fullpath, can_be_legacy);
 142                         WorldSpec spec(fullpath, name, gameid);
 143                         if(!spec.isValid()){
 144                                 infostream<<"(invalid: "<<name<<") ";
 145                         } else {
 146                                 infostream<<name<<" ";
 147                                 worlds.push_back(spec);
 148                         }
 149                 }
 150                 infostream<<std::endl;
 151         }
 152         // Check old world location
 153         do{
 154                 std::string fullpath = porting::path_user + DIR_DELIM + "world";
 155                 if(!fs::PathExists(fullpath))
 156                         break;
 157                 std::string name = "Old World";
 158                 std::string gameid = getWorldGameId(fullpath, true);
 159                 WorldSpec spec(fullpath, name, gameid);
 160                 infostream<<"Old world found."<<std::endl;
 161                 worlds.push_back(spec);
 162         }while(0);
 163         infostream<<worlds.size()<<" found."<<std::endl;
 164         return worlds;
 165 }
 166
 167 bool initializeWorld(const std::string &path, const std::string &gameid)
 168 {
 169         infostream<<"Initializing world at "<<path<<std::endl;
 170         // Create world.mt if does not already exist
 171         std::string worldmt_path = path + DIR_DELIM + "world.mt";
 172         if(!fs::PathExists(worldmt_path)){
 173                 infostream<<"Creating world.mt ("<<worldmt_path<<")"<<std::endl;
 174                 fs::CreateAllDirs(path);
 175                 std::ofstream of(worldmt_path.c_str(), std::ios::binary);
 176                 of<<"gameid = "<<gameid<<"\n";
 177         }
 178         return true;
 179 }
 180
 181