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