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 "minetest"
  82
  83 bool getWorldExists(const std::string &world_path)
  84 {
  85         return (fs::PathExists(world_path + DIR_DELIM + "map_meta.txt") ||
  86                         fs::PathExists(world_path + DIR_DELIM + "world.mt"));
  87 }
  88
  89 std::string getWorldGameId(const std::string &world_path, bool can_be_legacy)
  90 {
  91         std::string conf_path = world_path + DIR_DELIM + "world.mt";
  92         Settings conf;
  93         bool succeeded = conf.readConfigFile(conf_path.c_str());
  94         if(!succeeded){
  95                 if(can_be_legacy){
  96                         // If map_meta.txt exists, it is probably an old minetest world
  97                         if(fs::PathExists(world_path + DIR_DELIM + "map_meta.txt"))
  98                                 return LEGACY_GAMEID;
  99                 }
 100                 return "";
 101         }
 102         if(!conf.exists("gameid"))
 103                 return "";
 104         // The "mesetint" gameid has been discarded
 105         if(conf.get("gameid") == "mesetint")
 106                 return "minetest";
 107         return conf.get("gameid");
 108 }
 109
 110 std::vector<WorldSpec> getAvailableWorlds()
 111 {
 112         std::vector<WorldSpec> worlds;
 113         std::set<std::string> worldspaths;
 114         worldspaths.insert(porting::path_user + DIR_DELIM + "worlds");
 115         infostream<<"Searching worlds..."<<std::endl;
 116         for(std::set<std::string>::const_iterator i = worldspaths.begin();
 117                         i != worldspaths.end(); i++){
 118                 infostream<<"  In "<<(*i)<<": "<<std::endl;
 119                 std::vector<fs::DirListNode> dirvector = fs::GetDirListing(*i);
 120                 for(u32 j=0; j<dirvector.size(); j++){
 121                         if(!dirvector[j].dir)
 122                                 continue;
 123                         std::string fullpath = *i + DIR_DELIM + dirvector[j].name;
 124                         std::string name = dirvector[j].name;
 125                         // Just allow filling in the gameid always for now
 126                         bool can_be_legacy = true;
 127                         std::string gameid = getWorldGameId(fullpath, can_be_legacy);
 128                         WorldSpec spec(fullpath, name, gameid);
 129                         if(!spec.isValid()){
 130                                 infostream<<"(invalid: "<<name<<") ";
 131                         } else {
 132                                 infostream<<name<<" ";
 133                                 worlds.push_back(spec);
 134                         }
 135                 }
 136                 infostream<<std::endl;
 137         }
 138         // Check old world location
 139         do{
 140                 std::string fullpath = porting::path_user + DIR_DELIM + "world";
 141                 if(!fs::PathExists(fullpath))
 142                         break;
 143                 std::string name = "Old World";
 144                 std::string gameid = getWorldGameId(fullpath, true);
 145                 WorldSpec spec(fullpath, name, gameid);
 146                 infostream<<"Old world found."<<std::endl;
 147                 worlds.push_back(spec);
 148         }while(0);
 149         infostream<<worlds.size()<<" found."<<std::endl;
 150         return worlds;
 151 }
 152
 153 bool initializeWorld(const std::string &path, const std::string &gameid)
 154 {
 155         infostream<<"Initializing world at "<<path<<std::endl;
 156         // Create world.mt if does not already exist
 157         std::string worldmt_path = path + DIR_DELIM + "world.mt";
 158         if(!fs::PathExists(worldmt_path)){
 159                 infostream<<"Creating world.mt ("<<worldmt_path<<")"<<std::endl;
 160                 fs::CreateAllDirs(path);
 161                 std::ofstream of(worldmt_path.c_str(), std::ios::binary);
 162                 of<<"gameid = "<<gameid<<"\n";
 163         }
 164         return true;
 165 }
 166
 167