remove_detached_inventory: Fix segfault during mod load
[oweals/minetest.git] / src / main.cpp
index 23ce01073bd745a925a8c34c1c74d47f5863dfe4..bd83f96389d9b4ad8b831e3c1bab9ce6f3db7540 100644 (file)
@@ -17,128 +17,52 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
-#ifdef NDEBUG
-       /*#ifdef _WIN32
-               #pragma message ("Disabling unit tests")
-       #else
-               #warning "Disabling unit tests"
-       #endif*/
-       // Disable unit tests
-       #define ENABLE_TESTS 0
-#else
-       // Enable unit tests
-       #define ENABLE_TESTS 1
-#endif
-
-#ifdef _MSC_VER
-#ifndef SERVER // Dedicated server isn't linked with Irrlicht
-       #pragma comment(lib, "Irrlicht.lib")
-       // This would get rid of the console window
-       //#pragma comment(linker, "/subsystem:windows /ENTRY:mainCRTStartup")
-#endif
-       #pragma comment(lib, "zlibwapi.lib")
-       #pragma comment(lib, "Shell32.lib")
-#endif
-
 #include "irrlicht.h" // createDevice
-
-#include "main.h"
-#include "mainmenumanager.h"
-#include <iostream>
-#include <fstream>
-#include <locale.h>
 #include "irrlichttypes_extrabloated.h"
+#include "chat_interface.h"
 #include "debug.h"
-#include "test.h"
-#include "clouds.h"
+#include "unittest/test.h"
 #include "server.h"
-#include "constants.h"
-#include "porting.h"
-#include "gettime.h"
 #include "filesys.h"
-#include "config.h"
 #include "version.h"
-#include "guiMainMenu.h"
-#include "game.h"
-#include "keycode.h"
-#include "tile.h"
-#include "chat.h"
+#include "client/game.h"
 #include "defaultsettings.h"
 #include "gettext.h"
-#include "settings.h"
-#include "profiler.h"
 #include "log.h"
-#include "mods.h"
-#if USE_FREETYPE
-#include "xCGUITTFont.h"
-#endif
-#include "util/string.h"
-#include "subgame.h"
 #include "quicktune.h"
-#include "serverlist.h"
 #include "httpfetch.h"
-#include "guiEngine.h"
-#include "mapsector.h"
+#include "gameparams.h"
+#include "database/database.h"
+#include "config.h"
 #include "player.h"
-
-#include "database-sqlite3.h"
-#ifdef USE_LEVELDB
-#include "database-leveldb.h"
+#include "porting.h"
+#include "network/socket.h"
+#if USE_CURSES
+       #include "terminal_chat_console.h"
 #endif
-
-#if USE_REDIS
-#include "database-redis.h"
+#ifndef SERVER
+#include "gui/guiMainMenu.h"
+#include "client/clientlauncher.h"
+#include "gui/guiEngine.h"
+#include "gui/mainmenumanager.h"
 #endif
 
 #ifdef HAVE_TOUCHSCREENGUI
-#include "touchscreengui.h"
+       #include "gui/touchscreengui.h"
 #endif
 
-/*
-       Settings.
-       These are loaded from the config file.
-*/
-static Settings main_settings;
-Settings *g_settings = &main_settings;
-std::string g_settings_path;
-
-// Global profiler
-Profiler main_profiler;
-Profiler *g_profiler = &main_profiler;
-
-// Menu clouds are created later
-Clouds *g_menuclouds = 0;
-irr::scene::ISceneManager *g_menucloudsmgr = 0;
-
-/*
-       Debug streams
-*/
-
-// Connection
-std::ostream *dout_con_ptr = &dummyout;
-std::ostream *derr_con_ptr = &verbosestream;
-
-// Server
-std::ostream *dout_server_ptr = &infostream;
-std::ostream *derr_server_ptr = &errorstream;
-
-// Client
-std::ostream *dout_client_ptr = &infostream;
-std::ostream *derr_client_ptr = &errorstream;
+#if !defined(SERVER) && \
+       (IRRLICHT_VERSION_MAJOR == 1) && \
+       (IRRLICHT_VERSION_MINOR == 8) && \
+       (IRRLICHT_VERSION_REVISION == 2)
+       #error "Irrlicht 1.8.2 is known to be broken - please update Irrlicht to version >= 1.8.3"
+#endif
 
 #define DEBUGFILE "debug.txt"
 #define DEFAULT_SERVER_PORT 30000
 
 typedef std::map<std::string, ValueSpec> OptionList;
 
-struct GameParams {
-       u16 socket_port;
-       std::string world_path;
-       SubgameSpec game_spec;
-       bool is_dedicated_server;
-       int log_level;
-};
-
 /**********************************************************************
  * Private functions
  **********************************************************************/
@@ -150,17 +74,17 @@ static void print_help(const OptionList &allowed_options);
 static void print_allowed_options(const OptionList &allowed_options);
 static void print_version();
 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
-                                                        std::ostream &os);
+       std::ostream &os, bool print_name = true, bool print_path = true);
 static void print_modified_quicktune_values();
 
 static void list_game_ids();
-static void list_worlds();
-static void setup_log_params(const Settings &cmd_args);
+static void list_worlds(bool print_name, bool print_path);
+static bool setup_log_params(const Settings &cmd_args);
 static bool create_userdata_path();
-static bool init_common(int *log_level, const Settings &cmd_args);
+static bool init_common(const Settings &cmd_args, int argc, char *argv[]);
 static void startup_message();
 static bool read_config_file(const Settings &cmd_args);
-static void init_debug_streams(int *log_level, const Settings &cmd_args);
+static void init_log_streams(const Settings &cmd_args);
 
 static bool game_configure(GameParams *game_params, const Settings &cmd_args);
 static void game_configure_port(GameParams *game_params, const Settings &cmd_args);
@@ -176,645 +100,58 @@ static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_a
 static bool determine_subgame(GameParams *game_params);
 
 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
-static bool migrate_database(const GameParams &game_params, const Settings &cmd_args,
-               Server *server);
-
-#ifndef SERVER
-static bool print_video_modes();
-static void speed_tests();
-#endif
+static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args);
 
 /**********************************************************************/
 
-#ifndef SERVER
-/*
-       Random stuff
-*/
-
-/* mainmenumanager.h */
-
-gui::IGUIEnvironment* guienv = NULL;
-gui::IGUIStaticText *guiroot = NULL;
-MainMenuManager g_menumgr;
-
-bool noMenuActive()
-{
-       return (g_menumgr.menuCount() == 0);
-}
-
-// Passed to menus to allow disconnecting and exiting
-MainGameCallback *g_gamecallback = NULL;
-#endif
-
-/*
-       gettime.h implementation
-*/
-
-#ifdef SERVER
-
-u32 getTimeMs()
-{
-       /* Use imprecise system calls directly (from porting.h) */
-       return porting::getTime(PRECISION_MILLI);
-}
-
-u32 getTime(TimePrecision prec)
-{
-       return porting::getTime(prec);
-}
-
-#else
-
-// A small helper class
-class TimeGetter
-{
-public:
-       virtual u32 getTime(TimePrecision prec) = 0;
-};
-
-// A precise irrlicht one
-class IrrlichtTimeGetter: public TimeGetter
-{
-public:
-       IrrlichtTimeGetter(IrrlichtDevice *device):
-               m_device(device)
-       {}
-       u32 getTime(TimePrecision prec)
-       {
-               if (prec == PRECISION_MILLI) {
-                       if (m_device == NULL)
-                               return 0;
-                       return m_device->getTimer()->getRealTime();
-               } else {
-                       return porting::getTime(prec);
-               }
-       }
-private:
-       IrrlichtDevice *m_device;
-};
-// Not so precise one which works without irrlicht
-class SimpleTimeGetter: public TimeGetter
-{
-public:
-       u32 getTime(TimePrecision prec)
-       {
-               return porting::getTime(prec);
-       }
-};
-
-// A pointer to a global instance of the time getter
-// TODO: why?
-TimeGetter *g_timegetter = NULL;
-
-u32 getTimeMs()
-{
-       if (g_timegetter == NULL)
-               return 0;
-       return g_timegetter->getTime(PRECISION_MILLI);
-}
-
-u32 getTime(TimePrecision prec) {
-       if (g_timegetter == NULL)
-               return 0;
-       return g_timegetter->getTime(prec);
-}
-#endif
-
-class StderrLogOutput: public ILogOutput
-{
-public:
-       /* line: Full line with timestamp, level and thread */
-       void printLog(const std::string &line)
-       {
-               std::cerr << line << std::endl;
-       }
-} main_stderr_log_out;
-
-class DstreamNoStderrLogOutput: public ILogOutput
-{
-public:
-       /* line: Full line with timestamp, level and thread */
-       void printLog(const std::string &line)
-       {
-               dstream_no_stderr << line << std::endl;
-       }
-} main_dstream_no_stderr_log_out;
-
-#ifndef SERVER
-
-/*
-       Event handler for Irrlicht
 
-       NOTE: Everything possible should be moved out from here,
-             probably to InputHandler and the_game
-*/
-
-class MyEventReceiver : public IEventReceiver
-{
-public:
-       // This is the one method that we have to implement
-       virtual bool OnEvent(const SEvent& event)
-       {
-               /*
-                       React to nothing here if a menu is active
-               */
-               if (noMenuActive() == false) {
-#ifdef HAVE_TOUCHSCREENGUI
-                       if (m_touchscreengui != 0) {
-                               m_touchscreengui->Toggle(false);
-                       }
-#endif
-                       return g_menumgr.preprocessEvent(event);
-               }
-
-               // Remember whether each key is down or up
-               if (event.EventType == irr::EET_KEY_INPUT_EVENT) {
-                       if (event.KeyInput.PressedDown) {
-                               keyIsDown.set(event.KeyInput);
-                               keyWasDown.set(event.KeyInput);
-                       } else {
-                               keyIsDown.unset(event.KeyInput);
-                       }
-               }
-
-#ifdef HAVE_TOUCHSCREENGUI
-               // case of touchscreengui we have to handle different events
-               if ((m_touchscreengui != 0) &&
-                               (event.EventType == irr::EET_TOUCH_INPUT_EVENT)) {
-                       m_touchscreengui->translateEvent(event);
-                       return true;
-               }
-#endif
-               // handle mouse events
-               if (event.EventType == irr::EET_MOUSE_INPUT_EVENT) {
-                       if (noMenuActive() == false) {
-                               left_active = false;
-                               middle_active = false;
-                               right_active = false;
-                       } else {
-                               left_active = event.MouseInput.isLeftPressed();
-                               middle_active = event.MouseInput.isMiddlePressed();
-                               right_active = event.MouseInput.isRightPressed();
-
-                               if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) {
-                                       leftclicked = true;
-                               }
-                               if (event.MouseInput.Event == EMIE_RMOUSE_PRESSED_DOWN) {
-                                       rightclicked = true;
-                               }
-                               if (event.MouseInput.Event == EMIE_LMOUSE_LEFT_UP) {
-                                       leftreleased = true;
-                               }
-                               if (event.MouseInput.Event == EMIE_RMOUSE_LEFT_UP) {
-                                       rightreleased = true;
-                               }
-                               if (event.MouseInput.Event == EMIE_MOUSE_WHEEL) {
-                                       mouse_wheel += event.MouseInput.Wheel;
-                               }
-                       }
-               }
-               if (event.EventType == irr::EET_LOG_TEXT_EVENT) {
-                       dstream << std::string("Irrlicht log: ") + std::string(event.LogEvent.Text)
-                               << std::endl;
-                       return true;
-               }
-               /* always return false in order to continue processing events */
-               return false;
-       }
-
-       bool IsKeyDown(const KeyPress &keyCode) const
-       {
-               return keyIsDown[keyCode];
-       }
-
-       // Checks whether a key was down and resets the state
-       bool WasKeyDown(const KeyPress &keyCode)
-       {
-               bool b = keyWasDown[keyCode];
-               if (b)
-                       keyWasDown.unset(keyCode);
-               return b;
-       }
-
-       s32 getMouseWheel()
-       {
-               s32 a = mouse_wheel;
-               mouse_wheel = 0;
-               return a;
-       }
-
-       void clearInput()
-       {
-               keyIsDown.clear();
-               keyWasDown.clear();
-
-               leftclicked = false;
-               rightclicked = false;
-               leftreleased = false;
-               rightreleased = false;
-
-               left_active = false;
-               middle_active = false;
-               right_active = false;
-
-               mouse_wheel = 0;
-       }
-
-       MyEventReceiver()
-       {
-               clearInput();
-#ifdef HAVE_TOUCHSCREENGUI
-               m_touchscreengui = NULL;
-#endif
-       }
-
-       bool leftclicked;
-       bool rightclicked;
-       bool leftreleased;
-       bool rightreleased;
-
-       bool left_active;
-       bool middle_active;
-       bool right_active;
-
-       s32 mouse_wheel;
-
-#ifdef HAVE_TOUCHSCREENGUI
-       TouchScreenGUI* m_touchscreengui;
-#endif
-
-private:
-       // The current state of keys
-       KeyList keyIsDown;
-       // Whether a key has been pressed or not
-       KeyList keyWasDown;
-};
-
-/*
-       Separated input handler
-*/
-
-class RealInputHandler : public InputHandler
-{
-public:
-       RealInputHandler(IrrlichtDevice *device, MyEventReceiver *receiver):
-               m_device(device),
-               m_receiver(receiver),
-               m_mousepos(0,0)
-       {
-       }
-       virtual bool isKeyDown(const KeyPress &keyCode)
-       {
-               return m_receiver->IsKeyDown(keyCode);
-       }
-       virtual bool wasKeyDown(const KeyPress &keyCode)
-       {
-               return m_receiver->WasKeyDown(keyCode);
-       }
-       virtual v2s32 getMousePos()
-       {
-               if (m_device->getCursorControl()) {
-                       return m_device->getCursorControl()->getPosition();
-               }
-               else {
-                       return m_mousepos;
-               }
-       }
-       virtual void setMousePos(s32 x, s32 y)
-       {
-               if (m_device->getCursorControl()) {
-                       m_device->getCursorControl()->setPosition(x, y);
-               }
-               else {
-                       m_mousepos = v2s32(x,y);
-               }
-       }
-
-       virtual bool getLeftState()
-       {
-               return m_receiver->left_active;
-       }
-       virtual bool getRightState()
-       {
-               return m_receiver->right_active;
-       }
-
-       virtual bool getLeftClicked()
-       {
-               return m_receiver->leftclicked;
-       }
-       virtual bool getRightClicked()
-       {
-               return m_receiver->rightclicked;
-       }
-       virtual void resetLeftClicked()
-       {
-               m_receiver->leftclicked = false;
-       }
-       virtual void resetRightClicked()
-       {
-               m_receiver->rightclicked = false;
-       }
-
-       virtual bool getLeftReleased()
-       {
-               return m_receiver->leftreleased;
-       }
-       virtual bool getRightReleased()
-       {
-               return m_receiver->rightreleased;
-       }
-       virtual void resetLeftReleased()
-       {
-               m_receiver->leftreleased = false;
-       }
-       virtual void resetRightReleased()
-       {
-               m_receiver->rightreleased = false;
-       }
-
-       virtual s32 getMouseWheel()
-       {
-               return m_receiver->getMouseWheel();
-       }
-
-       void clear()
-       {
-               m_receiver->clearInput();
-       }
-private:
-       IrrlichtDevice  *m_device;
-       MyEventReceiver *m_receiver;
-       v2s32           m_mousepos;
-};
-
-class RandomInputHandler : public InputHandler
-{
-public:
-       RandomInputHandler()
-       {
-               leftdown = false;
-               rightdown = false;
-               leftclicked = false;
-               rightclicked = false;
-               leftreleased = false;
-               rightreleased = false;
-               keydown.clear();
-       }
-       virtual bool isKeyDown(const KeyPress &keyCode)
-       {
-               return keydown[keyCode];
-       }
-       virtual bool wasKeyDown(const KeyPress &keyCode)
-       {
-               return false;
-       }
-       virtual v2s32 getMousePos()
-       {
-               return mousepos;
-       }
-       virtual void setMousePos(s32 x, s32 y)
-       {
-               mousepos = v2s32(x, y);
-       }
-
-       virtual bool getLeftState()
-       {
-               return leftdown;
-       }
-       virtual bool getRightState()
-       {
-               return rightdown;
-       }
-
-       virtual bool getLeftClicked()
-       {
-               return leftclicked;
-       }
-       virtual bool getRightClicked()
-       {
-               return rightclicked;
-       }
-       virtual void resetLeftClicked()
-       {
-               leftclicked = false;
-       }
-       virtual void resetRightClicked()
-       {
-               rightclicked = false;
-       }
-
-       virtual bool getLeftReleased()
-       {
-               return leftreleased;
-       }
-       virtual bool getRightReleased()
-       {
-               return rightreleased;
-       }
-       virtual void resetLeftReleased()
-       {
-               leftreleased = false;
-       }
-       virtual void resetRightReleased()
-       {
-               rightreleased = false;
-       }
-
-       virtual s32 getMouseWheel()
-       {
-               return 0;
-       }
-
-       virtual void step(float dtime)
-       {
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 40);
-                               keydown.toggle(getKeySetting("keymap_jump"));
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 40);
-                               keydown.toggle(getKeySetting("keymap_special1"));
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 40);
-                               keydown.toggle(getKeySetting("keymap_forward"));
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 40);
-                               keydown.toggle(getKeySetting("keymap_left"));
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 20);
-                               mousespeed = v2s32(Rand(-20, 20), Rand(-15, 20));
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 30);
-                               leftdown = !leftdown;
-                               if (leftdown)
-                                       leftclicked = true;
-                               if (!leftdown)
-                                       leftreleased = true;
-                       }
-               }
-               {
-                       static float counter1 = 0;
-                       counter1 -= dtime;
-                       if (counter1 < 0.0) {
-                               counter1 = 0.1 * Rand(1, 15);
-                               rightdown = !rightdown;
-                               if (rightdown)
-                                       rightclicked = true;
-                               if (!rightdown)
-                                       rightreleased = true;
-                       }
-               }
-               mousepos += mousespeed;
-       }
-
-       s32 Rand(s32 min, s32 max)
-       {
-               return (myrand()%(max-min+1))+min;
-       }
-private:
-       KeyList keydown;
-       v2s32 mousepos;
-       v2s32 mousespeed;
-       bool leftdown;
-       bool rightdown;
-       bool leftclicked;
-       bool rightclicked;
-       bool leftreleased;
-       bool rightreleased;
-};
-
-
-class ClientLauncher
-{
-public:
-       ClientLauncher() :
-               list_video_modes(false),
-               skip_main_menu(false),
-               use_freetype(false),
-               random_input(false),
-               address(""),
-               playername(""),
-               password(""),
-               device(NULL),
-               input(NULL),
-               receiver(NULL),
-               skin(NULL),
-               font(NULL),
-               simple_singleplayer_mode(false),
-               current_playername("inv£lid"),
-               current_password(""),
-               current_address("does-not-exist"),
-               current_port(0)
-       {}
-
-       ~ClientLauncher();
-
-       bool run(GameParams &game_params, const Settings &cmd_args);
-
-protected:
-       void init_args(GameParams &game_params, const Settings &cmd_args);
-       bool init_engine(int log_level);
-
-       bool launch_game(std::wstring *error_message, GameParams &game_params,
-                       const Settings &cmd_args);
-
-       void main_menu(MainMenuData *menudata);
-       bool create_engine_device(int log_level);
-
-       bool list_video_modes;
-       bool skip_main_menu;
-       bool use_freetype;
-       bool random_input;
-       std::string address;
-       std::string playername;
-       std::string password;
-       IrrlichtDevice *device;
-       InputHandler *input;
-       MyEventReceiver *receiver;
-       gui::IGUISkin *skin;
-       gui::IGUIFont *font;
-       scene::ISceneManager *smgr;
-       SubgameSpec gamespec;
-       WorldSpec worldspec;
-       bool simple_singleplayer_mode;
-
-       // These are set up based on the menu and other things
-       // TODO: Are these required since there's already playername, password, etc
-       std::string current_playername;
-       std::string current_password;
-       std::string current_address;
-       int current_port;
-};
-
-#endif // !SERVER
+FileLogOutput file_log_output;
 
 static OptionList allowed_options;
 
 int main(int argc, char *argv[])
 {
        int retval;
+       debug_set_exception_handler();
 
-       log_add_output_maxlev(&main_stderr_log_out, LMT_ACTION);
-       log_add_output_all_levs(&main_dstream_no_stderr_log_out);
-
-       log_register_thread("main");
+       g_logger.registerThread("Main");
+       g_logger.addOutputMaxLevel(&stderr_output, LL_ACTION);
 
        Settings cmd_args;
        bool cmd_args_ok = get_cmdline_opts(argc, argv, &cmd_args);
        if (!cmd_args_ok
                        || cmd_args.getFlag("help")
                        || cmd_args.exists("nonopt1")) {
+               porting::attachOrCreateConsole();
                print_help(allowed_options);
                return cmd_args_ok ? 0 : 1;
        }
+       if (cmd_args.getFlag("console"))
+               porting::attachOrCreateConsole();
 
        if (cmd_args.getFlag("version")) {
+               porting::attachOrCreateConsole();
                print_version();
                return 0;
        }
 
-       setup_log_params(cmd_args);
+       if (!setup_log_params(cmd_args))
+               return 1;
 
        porting::signal_handler_init();
+
+#ifdef __ANDROID__
+       porting::initAndroid();
+       porting::initializePathsAndroid();
+#else
        porting::initializePaths();
+#endif
 
        if (!create_userdata_path()) {
                errorstream << "Cannot create user data directory" << std::endl;
                return 1;
        }
 
-       // Initialize debug stacks
-       debug_stacks_init();
-       DSTACK(__FUNCTION_NAME);
-
        // Debug handler
        BEGIN_DEBUG_EXCEPTION_HANDLER
 
@@ -824,42 +161,54 @@ int main(int argc, char *argv[])
                return 0;
        }
 
-       // List worlds if requested
-       if (cmd_args.exists("world") && cmd_args.get("world") == "list") {
-               list_worlds();
+       // List worlds, world names, and world paths if requested
+       if (cmd_args.exists("worldlist")) {
+               if (cmd_args.get("worldlist") == "name") {
+                       list_worlds(true, false);
+               } else if (cmd_args.get("worldlist") == "path") {
+                       list_worlds(false, true);
+               } else if (cmd_args.get("worldlist") == "both") {
+                       list_worlds(true, true);
+               } else {
+                       errorstream << "Invalid --worldlist value: "
+                               << cmd_args.get("worldlist") << std::endl;
+                       return 1; 
+               }
                return 0;
        }
 
-       GameParams game_params;
-       if (!init_common(&game_params.log_level, cmd_args))
+       if (!init_common(cmd_args, argc, argv))
                return 1;
 
+       if (g_settings->getBool("enable_console"))
+               porting::attachOrCreateConsole();
+
 #ifndef __ANDROID__
        // Run unit tests
-       if ((ENABLE_TESTS && cmd_args.getFlag("disable-unittests") == false)
-                       || cmd_args.getFlag("enable-unittests") == true) {
-               run_tests();
+       if (cmd_args.getFlag("run-unittests")) {
+               return run_tests();
        }
 #endif
 
+       GameParams game_params;
 #ifdef SERVER
+       porting::attachOrCreateConsole();
        game_params.is_dedicated_server = true;
 #else
-       game_params.is_dedicated_server = cmd_args.getFlag("server");
+       const bool isServer = cmd_args.getFlag("server");
+       if (isServer)
+               porting::attachOrCreateConsole();
+       game_params.is_dedicated_server = isServer;
 #endif
 
        if (!game_configure(&game_params, cmd_args))
                return 1;
 
-       assert(game_params.world_path != "");
+       sanity_check(!game_params.world_path.empty());
 
        infostream << "Using commanded world path ["
                   << game_params.world_path << "]" << std::endl;
 
-       //Run dedicated server if asked to or no other option
-       g_settings->set("server_dedicated",
-                       game_params.is_dedicated_server ? "true" : "false");
-
        if (game_params.is_dedicated_server)
                return run_dedicated_server(game_params, cmd_args) ? 0 : 1;
 
@@ -871,7 +220,7 @@ int main(int argc, char *argv[])
 #endif
 
        // Update configuration file
-       if (g_settings_path != "")
+       if (!g_settings_path.empty())
                g_settings->updateConfigFile(g_settings_path.c_str());
 
        print_modified_quicktune_values();
@@ -879,7 +228,7 @@ int main(int argc, char *argv[])
        // Stop httpfetch thread (if started)
        httpfetch_cleanup();
 
-       END_DEBUG_EXCEPTION_HANDLER(errorstream)
+       END_DEBUG_EXCEPTION_HANDLER
 
        return retval;
 }
@@ -909,18 +258,22 @@ static void set_allowed_options(OptionList *allowed_options)
                        _("Load configuration from specified file"))));
        allowed_options->insert(std::make_pair("port", ValueSpec(VALUETYPE_STRING,
                        _("Set network port (UDP)"))));
-       allowed_options->insert(std::make_pair("disable-unittests", ValueSpec(VALUETYPE_FLAG,
-                       _("Disable unit tests"))));
-       allowed_options->insert(std::make_pair("enable-unittests", ValueSpec(VALUETYPE_FLAG,
-                       _("Enable unit tests"))));
+       allowed_options->insert(std::make_pair("run-unittests", ValueSpec(VALUETYPE_FLAG,
+                       _("Run the unit tests and exit"))));
        allowed_options->insert(std::make_pair("map-dir", ValueSpec(VALUETYPE_STRING,
                        _("Same as --world (deprecated)"))));
        allowed_options->insert(std::make_pair("world", ValueSpec(VALUETYPE_STRING,
-                       _("Set world path (implies local game) ('list' lists all)"))));
+                       _("Set world path (implies local game if used with option --go)"))));
        allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
-                       _("Set world by name (implies local game)"))));
+                       _("Set world by name (implies local game if used with option --go)"))));
+       allowed_options->insert(std::make_pair("worldlist", ValueSpec(VALUETYPE_STRING,
+                       _("Get list of worlds ('path' lists paths, "
+                       "'name' lists names, 'both' lists both)"))));
        allowed_options->insert(std::make_pair("quiet", ValueSpec(VALUETYPE_FLAG,
                        _("Print to console errors only"))));
+       allowed_options->insert(std::make_pair("color", ValueSpec(VALUETYPE_STRING,
+                       _("Coloured logs ('always', 'never' or 'auto'), defaults to 'auto'"
+                       ))));
        allowed_options->insert(std::make_pair("info", ValueSpec(VALUETYPE_FLAG,
                        _("Print more information to console"))));
        allowed_options->insert(std::make_pair("verbose",  ValueSpec(VALUETYPE_FLAG,
@@ -933,6 +286,12 @@ static void set_allowed_options(OptionList *allowed_options)
                        _("Set gameid (\"--gameid list\" prints available ones)"))));
        allowed_options->insert(std::make_pair("migrate", ValueSpec(VALUETYPE_STRING,
                        _("Migrate from current map backend to another (Only works when using minetestserver or with --server)"))));
+       allowed_options->insert(std::make_pair("migrate-players", ValueSpec(VALUETYPE_STRING,
+               _("Migrate from current players backend to another (Only works when using minetestserver or with --server)"))));
+       allowed_options->insert(std::make_pair("migrate-auth", ValueSpec(VALUETYPE_STRING,
+               _("Migrate from current auth backend to another (Only works when using minetestserver or with --server)"))));
+       allowed_options->insert(std::make_pair("terminal", ValueSpec(VALUETYPE_FLAG,
+                       _("Feature an interactive terminal (Only works when using minetestserver or with --server)"))));
 #ifndef SERVER
        allowed_options->insert(std::make_pair("videomodes", ValueSpec(VALUETYPE_FLAG,
                        _("Show available video modes"))));
@@ -948,73 +307,76 @@ static void set_allowed_options(OptionList *allowed_options)
                        _("Set player name"))));
        allowed_options->insert(std::make_pair("password", ValueSpec(VALUETYPE_STRING,
                        _("Set password"))));
+       allowed_options->insert(std::make_pair("password-file", ValueSpec(VALUETYPE_STRING,
+                       _("Set password from contents of file"))));
        allowed_options->insert(std::make_pair("go", ValueSpec(VALUETYPE_FLAG,
                        _("Disable main menu"))));
+       allowed_options->insert(std::make_pair("console", ValueSpec(VALUETYPE_FLAG,
+               _("Starts with the console (Windows only)"))));
 #endif
 
 }
 
 static void print_help(const OptionList &allowed_options)
 {
-       dstream << _("Allowed options:") << std::endl;
+       std::cout << _("Allowed options:") << std::endl;
        print_allowed_options(allowed_options);
 }
 
 static void print_allowed_options(const OptionList &allowed_options)
 {
-       for (OptionList::const_iterator i = allowed_options.begin();
-                       i != allowed_options.end(); ++i) {
+       for (const auto &allowed_option : allowed_options) {
                std::ostringstream os1(std::ios::binary);
-               os1 << "  --" << i->first;
-               if (i->second.type != VALUETYPE_FLAG)
+               os1 << "  --" << allowed_option.first;
+               if (allowed_option.second.type != VALUETYPE_FLAG)
                        os1 << _(" <value>");
 
-               dstream << padStringRight(os1.str(), 24);
+               std::cout << padStringRight(os1.str(), 30);
 
-               if (i->second.help != NULL)
-                       dstream << i->second.help;
+               if (allowed_option.second.help)
+                       std::cout << allowed_option.second.help;
 
-               dstream << std::endl;
+               std::cout << std::endl;
        }
 }
 
 static void print_version()
 {
-#ifdef SERVER
-       dstream << "minetestserver " << minetest_version_hash << std::endl;
-#else
-       dstream << "Minetest " << minetest_version_hash << std::endl;
-       dstream << "Using Irrlicht " << IRRLICHT_SDK_VERSION << std::endl;
+       std::cout << PROJECT_NAME_C " " << g_version_hash
+               << " (" << porting::getPlatformName() << ")" << std::endl;
+#ifndef SERVER
+       std::cout << "Using Irrlicht " IRRLICHT_SDK_VERSION << std::endl;
 #endif
-       dstream << "Build info: " << minetest_build_info << std::endl;
+       std::cout << g_build_info << std::endl;
 }
 
 static void list_game_ids()
 {
        std::set<std::string> gameids = getAvailableGameIds();
-       for (std::set<std::string>::const_iterator i = gameids.begin();
-                       i != gameids.end(); i++)
-               dstream << (*i) <<std::endl;
+       for (const std::string &gameid : gameids)
+               std::cout << gameid <<std::endl;
 }
 
-static void list_worlds()
+static void list_worlds(bool print_name, bool print_path)
 {
-       dstream << _("Available worlds:") << std::endl;
+       std::cout << _("Available worlds:") << std::endl;
        std::vector<WorldSpec> worldspecs = getAvailableWorlds();
-       print_worldspecs(worldspecs, dstream);
+       print_worldspecs(worldspecs, std::cout, print_name, print_path);
 }
 
 static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
-                                                        std::ostream &os)
+       std::ostream &os, bool print_name, bool print_path)
 {
-       for (size_t i = 0; i < worldspecs.size(); i++) {
-               std::string name = worldspecs[i].name;
-               std::string path = worldspecs[i].path;
-               if (name.find(" ") != std::string::npos)
-                       name = std::string("'") + name + "'";
-               path = std::string("'") + path + "'";
-               name = padStringRight(name, 14);
-               os << "  " << name << " " << path << std::endl;
+       for (const WorldSpec &worldspec : worldspecs) {
+               std::string name = worldspec.name;
+               std::string path = worldspec.path;
+               if (print_name && print_path) {
+                       os << "\t" << name << "\t\t" << path << std::endl;
+               } else if (print_name) {
+                       os << "\t" << name << std::endl;
+               } else if (print_path) {
+                       os << "\t" << path << std::endl;
+               }
        }
 }
 
@@ -1023,42 +385,68 @@ static void print_modified_quicktune_values()
        bool header_printed = false;
        std::vector<std::string> names = getQuicktuneNames();
 
-       for (u32 i = 0; i < names.size(); i++) {
-               QuicktuneValue val = getQuicktuneValue(names[i]);
+       for (const std::string &name : names) {
+               QuicktuneValue val = getQuicktuneValue(name);
                if (!val.modified)
                        continue;
                if (!header_printed) {
                        dstream << "Modified quicktune values:" << std::endl;
                        header_printed = true;
                }
-               dstream << names[i] << " = " << val.getString() << std::endl;
+               dstream << name << " = " << val.getString() << std::endl;
        }
 }
 
-static void setup_log_params(const Settings &cmd_args)
+static bool setup_log_params(const Settings &cmd_args)
 {
        // Quiet mode, print errors only
        if (cmd_args.getFlag("quiet")) {
-               log_remove_output(&main_stderr_log_out);
-               log_add_output_maxlev(&main_stderr_log_out, LMT_ERROR);
+               g_logger.removeOutput(&stderr_output);
+               g_logger.addOutputMaxLevel(&stderr_output, LL_ERROR);
+       }
+
+       // Coloured log messages (see log.h)
+       std::string color_mode;
+       if (cmd_args.exists("color")) {
+               color_mode = cmd_args.get("color");
+#if !defined(_WIN32)
+       } else {
+               char *color_mode_env = getenv("MT_LOGCOLOR");
+               if (color_mode_env)
+                       color_mode = color_mode_env;
+#endif
+       }
+       if (color_mode != "") {
+               if (color_mode == "auto") {
+                       Logger::color_mode = LOG_COLOR_AUTO;
+               } else if (color_mode == "always") {
+                       Logger::color_mode = LOG_COLOR_ALWAYS;
+               } else if (color_mode == "never") {
+                       Logger::color_mode = LOG_COLOR_NEVER;
+               } else {
+                       errorstream << "Invalid color mode: " << color_mode << std::endl;
+                       return false;
+               }                       
        }
 
        // If trace is enabled, enable logging of certain things
        if (cmd_args.getFlag("trace")) {
                dstream << _("Enabling trace level debug output") << std::endl;
-               log_trace_level_enabled = true;
-               dout_con_ptr = &verbosestream; // this is somewhat old crap
-               socket_enable_debug_output = true; // socket doesn't use log.h
+               g_logger.setTraceEnabled(true);
+               dout_con_ptr = &verbosestream; // This is somewhat old
+               socket_enable_debug_output = true; // Sockets doesn't use log.h
        }
 
        // In certain cases, output info level on stderr
        if (cmd_args.getFlag("info") || cmd_args.getFlag("verbose") ||
                        cmd_args.getFlag("trace") || cmd_args.getFlag("speedtests"))
-               log_add_output(&main_stderr_log_out, LMT_INFO);
+               g_logger.addOutput(&stderr_output, LL_INFO);
 
        // In certain cases, output verbose level on stderr
        if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
-               log_add_output(&main_stderr_log_out, LMT_VERBOSE);
+               g_logger.addOutput(&stderr_output, LL_VERBOSE);
+
+       return true;
 }
 
 static bool create_userdata_path()
@@ -1066,9 +454,6 @@ static bool create_userdata_path()
        bool success;
 
 #ifdef __ANDROID__
-       porting::initAndroid();
-
-       porting::setExternalStorageDir(porting::jnienv);
        if (!fs::PathExists(porting::path_user)) {
                success = fs::CreateDir(porting::path_user);
        } else {
@@ -1080,13 +465,10 @@ static bool create_userdata_path()
        success = fs::CreateDir(porting::path_user);
 #endif
 
-       infostream << "path_share = " << porting::path_share << std::endl;
-       infostream << "path_user  = " << porting::path_user << std::endl;
-
        return success;
 }
 
-static bool init_common(int *log_level, const Settings &cmd_args)
+static bool init_common(const Settings &cmd_args, int argc, char *argv[])
 {
        startup_message();
        set_default_settings(g_settings);
@@ -1098,7 +480,7 @@ static bool init_common(int *log_level, const Settings &cmd_args)
        if (!read_config_file(cmd_args))
                return false;
 
-       init_debug_streams(log_level, cmd_args);
+       init_log_streams(cmd_args);
 
        // Initialize random seed
        srand(time(0));
@@ -1107,13 +489,8 @@ static bool init_common(int *log_level, const Settings &cmd_args)
        // Initialize HTTP fetcher
        httpfetch_init(g_settings->getS32("curl_parallel_limit"));
 
-#ifdef _MSC_VER
-       init_gettext((porting::path_share + DIR_DELIM + "locale").c_str(),
+       init_gettext(porting::path_locale.c_str(),
                g_settings->get("language"), argc, argv);
-#else
-       init_gettext((porting::path_share + DIR_DELIM + "locale").c_str(),
-               g_settings->get("language"));
-#endif
 
        return true;
 }
@@ -1123,13 +500,13 @@ static void startup_message()
        infostream << PROJECT_NAME << " " << _("with")
                   << " SER_FMT_VER_HIGHEST_READ="
                << (int)SER_FMT_VER_HIGHEST_READ << ", "
-               << minetest_build_info << std::endl;
+               << g_build_info << std::endl;
 }
 
 static bool read_config_file(const Settings &cmd_args)
 {
        // Path of configuration file in use
-       assert(g_settings_path == "");  // Sanity check
+       sanity_check(g_settings_path == "");    // Sanity check
 
        if (cmd_args.exists("config")) {
                bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
@@ -1153,54 +530,60 @@ static bool read_config_file(const Settings &cmd_args)
                                DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
 #endif
 
-               for (size_t i = 0; i < filenames.size(); i++) {
-                       bool r = g_settings->readConfigFile(filenames[i].c_str());
+               for (const std::string &filename : filenames) {
+                       bool r = g_settings->readConfigFile(filename.c_str());
                        if (r) {
-                               g_settings_path = filenames[i];
+                               g_settings_path = filename;
                                break;
                        }
                }
 
                // If no path found, use the first one (menu creates the file)
-               if (g_settings_path == "")
+               if (g_settings_path.empty())
                        g_settings_path = filenames[0];
        }
 
        return true;
 }
 
-static void init_debug_streams(int *log_level, const Settings &cmd_args)
+static void init_log_streams(const Settings &cmd_args)
 {
-#if RUN_IN_PLACE
-       std::string logfile = DEBUGFILE;
-#else
-       std::string logfile = porting::path_user + DIR_DELIM + DEBUGFILE;
-#endif
+       std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;
+
        if (cmd_args.exists("logfile"))
-               logfile = cmd_args.get("logfile");
-
-       log_remove_output(&main_dstream_no_stderr_log_out);
-       *log_level = g_settings->getS32("debug_log_level");
-
-       if (*log_level == 0) //no logging
-               logfile = "";
-       if (*log_level < 0) {
-               dstream << "WARNING: Supplied debug_log_level < 0; Using 0" << std::endl;
-               *log_level = 0;
-       } else if (*log_level > LMT_NUM_VALUES) {
-               dstream << "WARNING: Supplied debug_log_level > " << LMT_NUM_VALUES
-                       << "; Using " << LMT_NUM_VALUES << std::endl;
-               *log_level = LMT_NUM_VALUES;
+               log_filename = cmd_args.get("logfile");
+
+       g_logger.removeOutput(&file_log_output);
+       std::string conf_loglev = g_settings->get("debug_log_level");
+
+       // Old integer format
+       if (std::isdigit(conf_loglev[0])) {
+               warningstream << "Deprecated use of debug_log_level with an "
+                       "integer value; please update your configuration." << std::endl;
+               static const char *lev_name[] =
+                       {"", "error", "action", "info", "verbose"};
+               int lev_i = atoi(conf_loglev.c_str());
+               if (lev_i < 0 || lev_i >= (int)ARRLEN(lev_name)) {
+                       warningstream << "Supplied invalid debug_log_level!"
+                               "  Assuming action level." << std::endl;
+                       lev_i = 2;
+               }
+               conf_loglev = lev_name[lev_i];
        }
 
-       log_add_output_maxlev(&main_dstream_no_stderr_log_out,
-                       (LogMessageLevel)(*log_level - 1));
+       if (log_filename.empty() || conf_loglev.empty())  // No logging
+               return;
 
-       debugstreams_init(false, logfile == "" ? NULL : logfile.c_str());
+       LogLevel log_level = Logger::stringToLevel(conf_loglev);
+       if (log_level == LL_MAX) {
+               warningstream << "Supplied unrecognized debug_log_level; "
+                       "using maximum." << std::endl;
+       }
 
-       infostream << "logfile = " << logfile << std::endl;
+       verbosestream << "log_filename = " << log_filename << std::endl;
 
-       atexit(debugstreams_deinit);
+       file_log_output.open(log_filename);
+       g_logger.addOutputMaxLevel(&file_log_output, log_level);
 }
 
 static bool game_configure(GameParams *game_params, const Settings &cmd_args)
@@ -1232,6 +615,7 @@ static bool game_configure_world(GameParams *game_params, const Settings &cmd_ar
 {
        if (get_world_from_cmdline(game_params, cmd_args))
                return true;
+
        if (get_world_from_config(game_params, cmd_args))
                return true;
 
@@ -1240,24 +624,24 @@ static bool game_configure_world(GameParams *game_params, const Settings &cmd_ar
 
 static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args)
 {
-       std::string commanded_world = "";
+       std::string commanded_world;
 
        // World name
-       std::string commanded_worldname = "";
+       std::string commanded_worldname;
        if (cmd_args.exists("worldname"))
                commanded_worldname = cmd_args.get("worldname");
 
        // If a world name was specified, convert it to a path
-       if (commanded_worldname != "") {
+       if (!commanded_worldname.empty()) {
                // Get information about available worlds
                std::vector<WorldSpec> worldspecs = getAvailableWorlds();
                bool found = false;
-               for (u32 i = 0; i < worldspecs.size(); i++) {
-                       std::string name = worldspecs[i].name;
+               for (const WorldSpec &worldspec : worldspecs) {
+                       std::string name = worldspec.name;
                        if (name == commanded_worldname) {
                                dstream << _("Using world specified by --worldname on the "
                                        "command line") << std::endl;
-                               commanded_world = worldspecs[i].path;
+                               commanded_world = worldspec.path;
                                found = true;
                                break;
                        }
@@ -1270,7 +654,7 @@ static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_
                }
 
                game_params->world_path = get_clean_world_path(commanded_world);
-               return commanded_world != "";
+               return !commanded_world.empty();
        }
 
        if (cmd_args.exists("world"))
@@ -1281,20 +665,20 @@ static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_
                commanded_world = cmd_args.get("nonopt0");
 
        game_params->world_path = get_clean_world_path(commanded_world);
-       return commanded_world != "";
+       return !commanded_world.empty();
 }
 
 static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args)
 {
        // World directory
-       std::string commanded_world = "";
+       std::string commanded_world;
 
        if (g_settings->exists("map-dir"))
                commanded_world = g_settings->get("map-dir");
 
        game_params->world_path = get_clean_world_path(commanded_world);
 
-       return commanded_world != "";
+       return !commanded_world.empty();
 }
 
 static bool auto_select_world(GameParams *game_params)
@@ -1314,10 +698,10 @@ static bool auto_select_world(GameParams *game_params)
                        << world_path << "]" << std::endl;
        // If there are multiple worlds, list them
        } else if (worldspecs.size() > 1 && game_params->is_dedicated_server) {
-               dstream << _("Multiple worlds are available.") << std::endl;
-               dstream << _("Please select one using --worldname <name>"
+               std::cerr << _("Multiple worlds are available.") << std::endl;
+               std::cerr << _("Please select one using --worldname <name>"
                                " or --world <path>") << std::endl;
-               print_worldspecs(worldspecs, dstream);
+               print_worldspecs(worldspecs, std::cerr);
                return false;
        // If there are no worlds, automatically create a new one
        } else {
@@ -1328,7 +712,7 @@ static bool auto_select_world(GameParams *game_params)
                           << world_path << "]" << std::endl;
        }
 
-       assert(world_path != "");
+       assert(world_path != "");       // Post-condition
        game_params->world_path = world_path;
        return true;
 }
@@ -1384,12 +768,12 @@ static bool determine_subgame(GameParams *game_params)
 {
        SubgameSpec gamespec;
 
-       assert(game_params->world_path != "");  // pre-condition
+       assert(game_params->world_path != "");  // Pre-condition
 
        verbosestream << _("Determining gameid/gamespec") << std::endl;
        // If world doesn't exist
-       if (game_params->world_path != ""
-                       && !getWorldExists(game_params->world_path)) {
+       if (!game_params->world_path.empty()
+               && !getWorldExists(game_params->world_path)) {
                // Try to take gamespec from command line
                if (game_params->game_spec.isValid()) {
                        gamespec = game_params->game_spec;
@@ -1397,6 +781,12 @@ static bool determine_subgame(GameParams *game_params)
                } else { // Otherwise we will be using "minetest"
                        gamespec = findSubgame(g_settings->get("default_game"));
                        infostream << "Using default gameid [" << gamespec.id << "]" << std::endl;
+                       if (!gamespec.isValid()) {
+                               errorstream << "Subgame specified in default_game ["
+                                           << g_settings->get("default_game")
+                                           << "] is invalid." << std::endl;
+                               return false;
+                       }
                }
        } else { // World exists
                std::string world_gameid = getWorldGameId(game_params->world_path, false);
@@ -1404,7 +794,7 @@ static bool determine_subgame(GameParams *game_params)
                if (game_params->game_spec.isValid()) {
                        gamespec = game_params->game_spec;
                        if (game_params->game_spec.id != world_gameid) {
-                               errorstream << "WARNING: Using commanded gameid ["
+                               warningstream << "Using commanded gameid ["
                                            << gamespec.id << "]" << " instead of world gameid ["
                                            << world_gameid << "]" << std::endl;
                        }
@@ -1432,8 +822,6 @@ static bool determine_subgame(GameParams *game_params)
  *****************************************************************************/
 static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args)
 {
-       DSTACK("Dedicated server branch");
-
        verbosestream << _("Using world path") << " ["
                      << game_params.world_path << "]" << std::endl;
        verbosestream << _("Using gameid") << " ["
@@ -1460,520 +848,93 @@ static bool run_dedicated_server(const GameParams &game_params, const Settings &
                return false;
        }
 
-       // Create server
-       Server server(game_params.world_path,
-                       game_params.game_spec, false, bind_addr.isIPv6());
-
        // Database migration
        if (cmd_args.exists("migrate"))
-               return migrate_database(game_params, cmd_args, &server);
-
-       server.start(bind_addr);
-
-       // Run server
-       bool &kill = *porting::signal_handler_killstatus();
-       dedicated_server_loop(server, kill);
-
-       return true;
-}
-
-static bool migrate_database(const GameParams &game_params, const Settings &cmd_args,
-               Server *server)
-{
-       Settings world_mt;
-       bool success = world_mt.readConfigFile((game_params.world_path
-                       + DIR_DELIM + "world.mt").c_str());
-       if (!success) {
-               errorstream << "Cannot read world.mt" << std::endl;
-               return false;
-       }
-
-       if (!world_mt.exists("backend")) {
-               errorstream << "Please specify your current backend in world.mt file:"
-                           << std::endl << "   backend = {sqlite3|leveldb|redis|dummy}"
-                           << std::endl;
-               return false;
-       }
-
-       std::string backend = world_mt.get("backend");
-       Database *new_db;
-       std::string migrate_to = cmd_args.get("migrate");
-
-       if (backend == migrate_to) {
-               errorstream << "Cannot migrate: new backend is same as the old one"
-                           << std::endl;
-               return false;
-       }
-
-       if (migrate_to == "sqlite3")
-               new_db = new Database_SQLite3(&(ServerMap&)server->getMap(),
-                               game_params.world_path);
-#if USE_LEVELDB
-       else if (migrate_to == "leveldb")
-               new_db = new Database_LevelDB(&(ServerMap&)server->getMap(),
-                               game_params.world_path);
-#endif
-#if USE_REDIS
-       else if (migrate_to == "redis")
-               new_db = new Database_Redis(&(ServerMap&)server->getMap(),
-                               game_params.world_path);
-#endif
-       else {
-               errorstream << "Migration to " << migrate_to << " is not supported"
-                           << std::endl;
-               return false;
-       }
-
-       std::list<v3s16> blocks;
-       ServerMap &old_map = ((ServerMap&)server->getMap());
-       old_map.listAllLoadableBlocks(blocks);
-       int count = 0;
-       new_db->beginSave();
-       for (std::list<v3s16>::iterator i = blocks.begin(); i != blocks.end(); i++) {
-               MapBlock *block = old_map.loadBlock(*i);
-               if (!block) {
-                       errorstream << "Failed to load block " << PP(*i) << ", skipping it.";
-               } else {
-                       old_map.saveBlock(block, new_db);
-                       MapSector *sector = old_map.getSectorNoGenerate(v2s16(i->X, i->Z));
-                       sector->deleteBlock(block);
-               }
-               ++count;
-               if (count % 500 == 0)
-                  actionstream << "Migrated " << count << " blocks "
-                          << (100.0 * count / blocks.size()) << "% completed" << std::endl;
-       }
-       new_db->endSave();
-       delete new_db;
-
-       actionstream << "Successfully migrated " << count << " blocks" << std::endl;
-       world_mt.set("backend", migrate_to);
-       if (!world_mt.updateConfigFile(
-                               (game_params.world_path+ DIR_DELIM + "world.mt").c_str()))
-               errorstream << "Failed to update world.mt!" << std::endl;
-       else
-               actionstream << "world.mt updated" << std::endl;
-
-       return true;
-}
-
-
-/*****************************************************************************
- * Client
- *****************************************************************************/
-#ifndef SERVER
-
-ClientLauncher::~ClientLauncher()
-{
-       if (receiver)
-               delete receiver;
-
-       if (input)
-               delete input;
-
-       if (device)
-               device->drop();
-
-#if USE_FREETYPE
-       if (use_freetype && font != NULL)
-               font->drop();
-#endif
-}
-
-bool ClientLauncher::run(GameParams &game_params, const Settings &cmd_args)
-{
-       init_args(game_params, cmd_args);
-
-       // List video modes if requested
-       if (list_video_modes)
-               return print_video_modes();
-
-       if (!init_engine(game_params.log_level)) {
-               errorstream << "Could not initialize game engine." << std::endl;
-               return false;
-       }
-
-       late_init_default_settings(g_settings);
+               return migrate_map_database(game_params, cmd_args);
 
-       // Speed tests (done after irrlicht is loaded to get timer)
-       if (cmd_args.getFlag("speedtests")) {
-               dstream << "Running speed tests" << std::endl;
-               speed_tests();
-               return true;
-       }
-
-       if (device->getVideoDriver() == NULL) {
-               errorstream << "Could not initialize video driver." << std::endl;
-               return false;
-       }
-
-       /*
-               This changes the minimum allowed number of vertices in a VBO.
-               Default is 500.
-       */
-       //driver->setMinHardwareBufferVertexCount(50);
-
-       // Create time getter
-       g_timegetter = new IrrlichtTimeGetter(device);
-
-       // Create game callback for menus
-       g_gamecallback = new MainGameCallback(device);
+       if (cmd_args.exists("migrate-players"))
+               return ServerEnvironment::migratePlayersDatabase(game_params, cmd_args);
 
-       device->setResizable(true);
+       if (cmd_args.exists("migrate-auth"))
+               return ServerEnvironment::migrateAuthDatabase(game_params, cmd_args);
 
-       if (random_input)
-               input = new RandomInputHandler();
-       else
-               input = new RealInputHandler(device, receiver);
-
-       smgr = device->getSceneManager();
-
-       guienv = device->getGUIEnvironment();
-       skin = guienv->getSkin();
-       std::string font_path = g_settings->get("font_path");
-
-#if USE_FREETYPE
-
-       if (use_freetype) {
-               std::string fallback;
-               if (is_yes(gettext("needs_fallback_font")))
-                       fallback = "fallback_";
-               u16 font_size = g_settings->getU16(fallback + "font_size");
-               font_path = g_settings->get(fallback + "font_path");
-               u32 font_shadow = g_settings->getU16(fallback + "font_shadow");
-               u32 font_shadow_alpha = g_settings->getU16(fallback + "font_shadow_alpha");
-               font = gui::CGUITTFont::createTTFont(guienv,
-                               font_path.c_str(), font_size, true, true,
-                               font_shadow, font_shadow_alpha);
-       } else {
-               font = guienv->getFont(font_path.c_str());
-       }
-#else
-       font = guienv->getFont(font_path.c_str());
-#endif
-       if (font)
-               skin->setFont(font);
-       else
-               errorstream << "WARNING: Font file was not found. Using default font."
-                           << std::endl;
+       if (cmd_args.exists("terminal")) {
+#if USE_CURSES
+               bool name_ok = true;
+               std::string admin_nick = g_settings->get("name");
 
-       font = skin->getFont(); // If font was not found, this will get us one
-       assert(font);
+               name_ok = name_ok && !admin_nick.empty();
+               name_ok = name_ok && string_allowed(admin_nick, PLAYERNAME_ALLOWED_CHARS);
 
-       u32 text_height = font->getDimension(L"Hello, world!").Height;
-       infostream << "text_height=" << text_height << std::endl;
-
-       skin->setColor(gui::EGDC_BUTTON_TEXT, video::SColor(255, 255, 255, 255));
-       skin->setColor(gui::EGDC_3D_HIGH_LIGHT, video::SColor(255, 0, 0, 0));
-       skin->setColor(gui::EGDC_3D_SHADOW, video::SColor(255, 0, 0, 0));
-       skin->setColor(gui::EGDC_HIGH_LIGHT, video::SColor(255, 70, 100, 50));
-       skin->setColor(gui::EGDC_HIGH_LIGHT_TEXT, video::SColor(255, 255, 255, 255));
-
-#if (IRRLICHT_VERSION_MAJOR >= 1 && IRRLICHT_VERSION_MINOR >= 8) || IRRLICHT_VERSION_MAJOR >= 2
-       // Irrlicht 1.8 input colours
-       skin->setColor(gui::EGDC_EDITABLE, video::SColor(255, 128, 128, 128));
-       skin->setColor(gui::EGDC_FOCUSED_EDITABLE, video::SColor(255, 96, 134, 49));
-#endif
-
-       // Create the menu clouds
-       if (!g_menucloudsmgr)
-               g_menucloudsmgr = smgr->createNewSceneManager();
-       if (!g_menuclouds)
-               g_menuclouds = new Clouds(g_menucloudsmgr->getRootSceneNode(),
-                               g_menucloudsmgr, -1, rand(), 100);
-       g_menuclouds->update(v2f(0, 0), video::SColor(255, 200, 200, 255));
-       scene::ICameraSceneNode* camera;
-       camera = g_menucloudsmgr->addCameraSceneNode(0,
-                               v3f(0, 0, 0), v3f(0, 60, 100));
-       camera->setFarValue(10000);
-
-       /*
-               GUI stuff
-       */
-
-       ChatBackend chat_backend;
-
-       // If an error occurs, this is set to something by menu().
-       // It is then displayed before  the menu shows on the next call to menu()
-       std::wstring error_message = L"";
-
-       bool first_loop = true;
-
-       /*
-               Menu-game loop
-       */
-       bool retval = true;
-       bool *kill = porting::signal_handler_killstatus();
-
-       while (device->run() && !*kill && !g_gamecallback->shutdown_requested)
-       {
-               // Set the window caption
-               wchar_t *text = wgettext("Main Menu");
-               device->setWindowCaption((std::wstring(L"Minetest [") + text + L"]").c_str());
-               delete[] text;
-
-               try {   // This is used for catching disconnects
-
-                       guienv->clear();
-
-                       /*
-                               We need some kind of a root node to be able to add
-                               custom gui elements directly on the screen.
-                               Otherwise they won't be automatically drawn.
-                       */
-                       guiroot = guienv->addStaticText(L"", core::rect<s32>(0, 0, 10000, 10000));
-
-                       bool game_has_run = launch_game(&error_message, game_params, cmd_args);
-
-                       // If skip_main_menu, we only want to startup once
-                       if (skip_main_menu && !first_loop)
-                               break;
-
-                       first_loop = false;
-
-                       if (!game_has_run) {
-                               if (skip_main_menu)
-                                       break;
-                               else
-                                       continue;
-                       }
-
-                       // Break out of menu-game loop to shut down cleanly
-                       if (!device->run() || *kill) {
-                               if (g_settings_path != "")
-                                       g_settings->updateConfigFile(g_settings_path.c_str());
-                               break;
-                       }
-
-                       if (current_playername.length() > PLAYERNAME_SIZE-1) {
-                               error_message = wgettext("Player name too long.");
-                               playername = current_playername.substr(0, PLAYERNAME_SIZE-1);
-                               g_settings->set("name", playername);
-                               continue;
-                       }
-
-                       device->getVideoDriver()->setTextureCreationFlag(
-                                       video::ETCF_CREATE_MIP_MAPS, g_settings->getBool("mip_map"));
-
-#ifdef HAVE_TOUCHSCREENGUI
-                       receiver->m_touchscreengui = new TouchScreenGUI(device, receiver);
-                       g_touchscreengui = receiver->m_touchscreengui;
-#endif
-                       the_game(
-                               kill,
-                               random_input,
-                               input,
-                               device,
-                               font,
-                               worldspec.path,
-                               current_playername,
-                               current_password,
-                               current_address,
-                               current_port,
-                               error_message,
-                               chat_backend,
-                               gamespec,
-                               simple_singleplayer_mode
-                       );
-                       smgr->clear();
-
-#ifdef HAVE_TOUCHSCREENGUI
-                       delete g_touchscreengui;
-                       g_touchscreengui = NULL;
-                       receiver->m_touchscreengui = NULL;
-#endif
-
-               } //try
-               catch (con::PeerNotFoundException &e) {
-                       error_message = wgettext("Connection error (timed out?)");
-                       errorstream << wide_to_narrow(error_message) << std::endl;
-               }
-
-#ifdef NDEBUG
-               catch (std::exception &e) {
-                       std::string narrow_message = "Some exception: \"";
-                       narrow_message += e.what();
-                       narrow_message += "\"";
-                       errorstream << narrow_message << std::endl;
-                       error_message = narrow_to_wide(narrow_message);
-               }
-#endif
-
-               // If no main menu, show error and exit
-               if (skip_main_menu) {
-                       if (error_message != L"") {
-                               verbosestream << "error_message = "
-                                             << wide_to_narrow(error_message) << std::endl;
-                               retval = false;
+               if (!name_ok) {
+                       if (admin_nick.empty()) {
+                               errorstream << "No name given for admin. "
+                                       << "Please check your minetest.conf that it "
+                                       << "contains a 'name = ' to your main admin account."
+                                       << std::endl;
+                       } else {
+                               errorstream << "Name for admin '"
+                                       << admin_nick << "' is not valid. "
+                                       << "Please check that it only contains allowed characters. "
+                                       << "Valid characters are: " << PLAYERNAME_ALLOWED_CHARS_USER_EXPL
+                                       << std::endl;
                        }
-                       break;
-               }
-       } // Menu-game loop
-
-       g_menuclouds->drop();
-       g_menucloudsmgr->drop();
-
-       return retval;
-}
-
-void ClientLauncher::init_args(GameParams &game_params, const Settings &cmd_args)
-{
-       address = g_settings->get("address");
-       if (game_params.world_path != "")
-               address = "";
-       else if (cmd_args.exists("address"))
-               address = cmd_args.get("address");
-
-       playername = g_settings->get("name");
-       if (cmd_args.exists("name"))
-               playername = cmd_args.get("name");
-
-       skip_main_menu = cmd_args.getFlag("go");
-
-       list_video_modes = cmd_args.getFlag("videomodes");
-
-       use_freetype = g_settings->getBool("freetype");
-
-       random_input = g_settings->getBool("random_input")
-                       || cmd_args.getFlag("random-input");
-}
-
-bool ClientLauncher::init_engine(int log_level)
-{
-       receiver = new MyEventReceiver();
-       create_engine_device(log_level);
-       return device != NULL;
-}
-
-bool ClientLauncher::launch_game(std::wstring *error_message,
-               GameParams &game_params, const Settings &cmd_args)
-{
-       // Initialize menu data
-       MainMenuData menudata;
-       menudata.address      = address;
-       menudata.name         = playername;
-       menudata.port         = itos(game_params.socket_port);
-       menudata.errormessage = wide_to_narrow(*error_message);
-
-       *error_message = L"";
-
-       if (cmd_args.exists("password"))
-               menudata.password = cmd_args.get("password");
-
-       menudata.enable_public = g_settings->getBool("server_announce");
-
-       // If a world was commanded, append and select it
-       if (game_params.world_path != "") {
-               worldspec.gameid = getWorldGameId(game_params.world_path, true);
-               worldspec.name = _("[--world parameter]");
-
-               if (worldspec.gameid == "") {   // Create new
-                       worldspec.gameid = g_settings->get("default_game");
-                       worldspec.name += " [new]";
+                       return false;
                }
-               worldspec.path = game_params.world_path;
-       }
+               ChatInterface iface;
+               bool &kill = *porting::signal_handler_killstatus();
 
-       /* Show the GUI menu
-        */
-       if (!skip_main_menu) {
-               main_menu(&menudata);
+               try {
+                       // Create server
+                       Server server(game_params.world_path, game_params.game_spec,
+                                       false, bind_addr, true, &iface);
+                       server.init();
 
-               address = menudata.address;
-               int newport = stoi(menudata.port);
-               if (newport != 0)
-                       game_params.socket_port = newport;
+                       g_term_console.setup(&iface, &kill, admin_nick);
 
-               simple_singleplayer_mode = menudata.simple_singleplayer_mode;
+                       g_term_console.start();
 
-               std::vector<WorldSpec> worldspecs = getAvailableWorlds();
-               worldspecs = getAvailableWorlds();
-
-               if (menudata.selected_world >= 0
-                               && menudata.selected_world < (int)worldspecs.size()) {
-                       g_settings->set("selected_world_path",
-                                       worldspecs[menudata.selected_world].path);
-                       worldspec = worldspecs[menudata.selected_world];
-               }
-       }
-
-       if (menudata.errormessage != "") {
-               /* The calling function will pass this back into this function upon the
-                * next iteration (if any) causing it to be displayed by the GUI
-                */
-               *error_message = narrow_to_wide(menudata.errormessage);
-               return false;
-       }
-
-       if (menudata.name == "")
-               menudata.name = std::string("Guest") + itos(myrand_range(1000, 9999));
-       else
-               playername = menudata.name;
-
-       password = translatePassword(playername, narrow_to_wide(menudata.password));
-
-       g_settings->set("name", playername);
-
-       current_playername = playername;
-       current_password   = password;
-       current_address    = address;
-       current_port       = game_params.socket_port;
-
-       // If using simple singleplayer mode, override
-       if (simple_singleplayer_mode) {
-               assert(skip_main_menu == false);
-               current_playername = "singleplayer";
-               current_password = "";
-               current_address = "";
-               current_port = myrand_range(49152, 65535);
-       } else if (address != "") {
-               ServerListSpec server;
-               server["name"] = menudata.servername;
-               server["address"] = menudata.address;
-               server["port"] = menudata.port;
-               server["description"] = menudata.serverdescription;
-               ServerList::insert(server);
-       }
-
-       infostream << "Selected world: " << worldspec.name
-                  << " [" << worldspec.path << "]" << std::endl;
-
-       if (current_address == "") { // If local game
-               if (worldspec.path == "") {
-                       *error_message = wgettext("No world selected and no address "
-                                       "provided. Nothing to do.");
-                       errorstream << wide_to_narrow(*error_message) << std::endl;
+                       server.start();
+                       // Run server
+                       dedicated_server_loop(server, kill);
+               } catch (const ModError &e) {
+                       g_term_console.stopAndWaitforThread();
+                       errorstream << "ModError: " << e.what() << std::endl;
                        return false;
-               }
-
-               if (!fs::PathExists(worldspec.path)) {
-                       *error_message = wgettext("Provided world path doesn't exist: ")
-                                       + narrow_to_wide(worldspec.path);
-                       errorstream << wide_to_narrow(*error_message) << std::endl;
+               } catch (const ServerError &e) {
+                       g_term_console.stopAndWaitforThread();
+                       errorstream << "ServerError: " << e.what() << std::endl;
                        return false;
                }
 
-               // Load gamespec for required game
-               gamespec = findWorldSubgame(worldspec.path);
-               if (!gamespec.isValid() && !game_params.game_spec.isValid()) {
-                       *error_message = wgettext("Could not find or load game \"")
-                                       + narrow_to_wide(worldspec.gameid) + L"\"";
-                       errorstream << wide_to_narrow(*error_message) << std::endl;
-                       return false;
-               }
-               if (game_params.game_spec.isValid() &&
-                               game_params.game_spec.id != worldspec.gameid) {
-                       errorstream << "WARNING: Overriding gamespec from \""
-                                   << worldspec.gameid << "\" to \""
-                                   << game_params.game_spec.id << "\"" << std::endl;
-                       gamespec = game_params.game_spec;
-               }
+               // Tell the console to stop, and wait for it to finish,
+               // only then leave context and free iface
+               g_term_console.stop();
+               g_term_console.wait();
 
-               if (!gamespec.isValid()) {
-                       *error_message = wgettext("Invalid gamespec.");
-                       *error_message += L" (world_gameid="
-                                       + narrow_to_wide(worldspec.gameid) + L")";
-                       errorstream << wide_to_narrow(*error_message) << std::endl;
+               g_term_console.clearKillStatus();
+       } else {
+#else
+               errorstream << "Cmd arg --terminal passed, but "
+                       << "compiled without ncurses. Ignoring." << std::endl;
+       } {
+#endif
+               try {
+                       // Create server
+                       Server server(game_params.world_path, game_params.game_spec, false,
+                               bind_addr, true);
+                       server.init();
+                       server.start();
+
+                       // Run server
+                       bool &kill = *porting::signal_handler_killstatus();
+                       dedicated_server_loop(server, kill);
+
+               } catch (const ModError &e) {
+                       errorstream << "ModError: " << e.what() << std::endl;
+                       return false;
+               } catch (const ServerError &e) {
+                       errorstream << "ServerError: " << e.what() << std::endl;
                        return false;
                }
        }
@@ -1981,279 +942,70 @@ bool ClientLauncher::launch_game(std::wstring *error_message,
        return true;
 }
 
-void ClientLauncher::main_menu(MainMenuData *menudata)
+static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args)
 {
-       bool *kill = porting::signal_handler_killstatus();
-       video::IVideoDriver *driver = device->getVideoDriver();
-
-       infostream << "Waiting for other menus" << std::endl;
-       while (device->run() && *kill == false) {
-               if (noMenuActive())
-                       break;
-               driver->beginScene(true, true, video::SColor(255, 128, 128, 128));
-               guienv->drawAll();
-               driver->endScene();
-               // On some computers framerate doesn't seem to be automatically limited
-               sleep_ms(25);
-       }
-       infostream << "Waited for other menus" << std::endl;
-
-       // Cursor can be non-visible when coming from the game
-#ifndef ANDROID
-       device->getCursorControl()->setVisible(true);
-#endif
-
-       /* show main menu */
-       GUIEngine mymenu(device, guiroot, &g_menumgr, smgr, menudata, *kill);
-
-       smgr->clear();  /* leave scene manager in a clean state */
-}
-
-bool ClientLauncher::create_engine_device(int log_level)
-{
-       static const char *driverids[] = {
-               "null",
-               "software",
-               "burningsvideo",
-               "direct3d8",
-               "direct3d9",
-               "opengl"
-#ifdef _IRR_COMPILE_WITH_OGLES1_
-               ,"ogles1"
-#endif
-#ifdef _IRR_COMPILE_WITH_OGLES2_
-               ,"ogles2"
-#endif
-               ,"invalid"
-       };
-
-       static const irr::ELOG_LEVEL irr_log_level[5] = {
-               ELL_NONE,
-               ELL_ERROR,
-               ELL_WARNING,
-               ELL_INFORMATION,
-#if (IRRLICHT_VERSION_MAJOR == 1 && IRRLICHT_VERSION_MINOR < 8)
-               ELL_INFORMATION
-#else
-               ELL_DEBUG
-#endif
-       };
-
-       // Resolution selection
-       bool fullscreen = g_settings->getBool("fullscreen");
-       u16 screenW = g_settings->getU16("screenW");
-       u16 screenH = g_settings->getU16("screenH");
-
-       // bpp, fsaa, vsync
-       bool vsync = g_settings->getBool("vsync");
-       u16 bits = g_settings->getU16("fullscreen_bpp");
-       u16 fsaa = g_settings->getU16("fsaa");
-
-       // Determine driver
-       video::E_DRIVER_TYPE driverType = video::EDT_OPENGL;
-
-       std::string driverstring = g_settings->get("video_driver");
-       for (size_t i = 0; i < sizeof driverids / sizeof driverids[0]; i++) {
-               if (strcasecmp(driverstring.c_str(), driverids[i]) == 0) {
-                       driverType = (video::E_DRIVER_TYPE) i;
-                       break;
-               }
-
-               if (strcasecmp("invalid", driverids[i]) == 0) {
-                       errorstream << "WARNING: Invalid video_driver specified;"
-                                   << " defaulting to opengl" << std::endl;
-                       break;
-               }
-       }
-
-       SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
-       params.DriverType    = driverType;
-       params.WindowSize    = core::dimension2d<u32>(screenW, screenH);
-       params.Bits          = bits;
-       params.AntiAlias     = fsaa;
-       params.Fullscreen    = fullscreen;
-       params.Stencilbuffer = false;
-       params.Vsync         = vsync;
-       params.EventReceiver = receiver;
-       params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
-#ifdef __ANDROID__
-       params.PrivateData = porting::app_global;
-       params.OGLES2ShaderPath = std::string(porting::path_user + DIR_DELIM +
-                       "media" + DIR_DELIM + "Shaders" + DIR_DELIM).c_str();
-#endif
-
-       device = createDeviceEx(params);
-
-       if (device) {
-               // Map our log level to irrlicht engine one.
-               ILogger* irr_logger = device->getLogger();
-               irr_logger->setLogLevel(irr_log_level[log_level]);
-
-               porting::initIrrlicht(device);
-       }
-
-       return device != NULL;
-}
-
-// Misc functions
-
-static bool print_video_modes()
-{
-       IrrlichtDevice *nulldevice;
-
-       bool vsync = g_settings->getBool("vsync");
-       u16 fsaa = g_settings->getU16("fsaa");
-       MyEventReceiver* receiver = new MyEventReceiver();
-
-       SIrrlichtCreationParameters params = SIrrlichtCreationParameters();
-       params.DriverType    = video::EDT_NULL;
-       params.WindowSize    = core::dimension2d<u32>(640, 480);
-       params.Bits          = 24;
-       params.AntiAlias     = fsaa;
-       params.Fullscreen    = false;
-       params.Stencilbuffer = false;
-       params.Vsync         = vsync;
-       params.EventReceiver = receiver;
-       params.HighPrecisionFPU = g_settings->getBool("high_precision_fpu");
-
-       nulldevice = createDeviceEx(params);
-
-       if (nulldevice == NULL) {
-               delete receiver;
+       std::string migrate_to = cmd_args.get("migrate");
+       Settings world_mt;
+       std::string world_mt_path = game_params.world_path + DIR_DELIM + "world.mt";
+       if (!world_mt.readConfigFile(world_mt_path.c_str())) {
+               errorstream << "Cannot read world.mt!" << std::endl;
                return false;
        }
 
-       dstream << _("Available video modes (WxHxD):") << std::endl;
-
-       video::IVideoModeList *videomode_list = nulldevice->getVideoModeList();
-
-       if (videomode_list != NULL) {
-               s32 videomode_count = videomode_list->getVideoModeCount();
-               core::dimension2d<u32> videomode_res;
-               s32 videomode_depth;
-               for (s32 i = 0; i < videomode_count; ++i) {
-                       videomode_res = videomode_list->getVideoModeResolution(i);
-                       videomode_depth = videomode_list->getVideoModeDepth(i);
-                       dstream << videomode_res.Width << "x" << videomode_res.Height
-                               << "x" << videomode_depth << std::endl;
-               }
-
-               dstream << _("Active video mode (WxHxD):") << std::endl;
-               videomode_res = videomode_list->getDesktopResolution();
-               videomode_depth = videomode_list->getDesktopDepth();
-               dstream << videomode_res.Width << "x" << videomode_res.Height
-                       << "x" << videomode_depth << std::endl;
-
-       }
-
-       nulldevice->drop();
-       delete receiver;
-
-       return videomode_list != NULL;
-}
-
-#endif // !SERVER
-
-/*****************************************************************************
- * Performance tests
- *****************************************************************************/
-#ifndef SERVER
-static void speed_tests()
-{
-       // volatile to avoid some potential compiler optimisations
-       volatile static s16 temp16;
-       volatile static f32 tempf;
-       static v3f tempv3f1;
-       static v3f tempv3f2;
-       static std::string tempstring;
-       static std::string tempstring2;
-
-       tempv3f1 = v3f();
-       tempv3f2 = v3f();
-       tempstring = std::string();
-       tempstring2 = std::string();
-
-       {
-               infostream << "The following test should take around 20ms." << std::endl;
-               TimeTaker timer("Testing std::string speed");
-               const u32 jj = 10000;
-               for (u32 j = 0; j < jj; j++) {
-                       tempstring = "";
-                       tempstring2 = "";
-                       const u32 ii = 10;
-                       for (u32 i = 0; i < ii; i++) {
-                               tempstring2 += "asd";
-                       }
-                       for (u32 i = 0; i < ii+1; i++) {
-                               tempstring += "asd";
-                               if (tempstring == tempstring2)
-                                       break;
-                       }
-               }
+       if (!world_mt.exists("backend")) {
+               errorstream << "Please specify your current backend in world.mt:"
+                       << std::endl
+                       << "    backend = {sqlite3|leveldb|redis|dummy|postgresql}"
+                       << std::endl;
+               return false;
        }
 
-       infostream << "All of the following tests should take around 100ms each."
-                  << std::endl;
-
-       {
-               TimeTaker timer("Testing floating-point conversion speed");
-               tempf = 0.001;
-               for (u32 i = 0; i < 4000000; i++) {
-                       temp16 += tempf;
-                       tempf += 0.001;
-               }
+       std::string backend = world_mt.get("backend");
+       if (backend == migrate_to) {
+               errorstream << "Cannot migrate: new backend is same"
+                       << " as the old one" << std::endl;
+               return false;
        }
 
-       {
-               TimeTaker timer("Testing floating-point vector speed");
+       MapDatabase *old_db = ServerMap::createDatabase(backend, game_params.world_path, world_mt),
+               *new_db = ServerMap::createDatabase(migrate_to, game_params.world_path, world_mt);
 
-               tempv3f1 = v3f(1, 2, 3);
-               tempv3f2 = v3f(4, 5, 6);
-               for (u32 i = 0; i < 10000000; i++) {
-                       tempf += tempv3f1.dotProduct(tempv3f2);
-                       tempv3f2 += v3f(7, 8, 9);
-               }
-       }
+       u32 count = 0;
+       time_t last_update_time = 0;
+       bool &kill = *porting::signal_handler_killstatus();
 
-       {
-               TimeTaker timer("Testing std::map speed");
+       std::vector<v3s16> blocks;
+       old_db->listAllLoadableBlocks(blocks);
+       new_db->beginSave();
+       for (std::vector<v3s16>::const_iterator it = blocks.begin(); it != blocks.end(); ++it) {
+               if (kill) return false;
 
-               std::map<v2s16, f32> map1;
-               tempf = -324;
-               const s16 ii = 300;
-               for (s16 y = 0; y < ii; y++) {
-                       for (s16 x = 0; x < ii; x++) {
-                               map1[v2s16(x, y)] =  tempf;
-                               tempf += 1;
-                       }
+               std::string data;
+               old_db->loadBlock(*it, &data);
+               if (!data.empty()) {
+                       new_db->saveBlock(*it, data);
+               } else {
+                       errorstream << "Failed to load block " << PP(*it) << ", skipping it." << std::endl;
                }
-               for (s16 y = ii - 1; y >= 0; y--) {
-                       for (s16 x = 0; x < ii; x++) {
-                               tempf = map1[v2s16(x, y)];
-                       }
+               if (++count % 0xFF == 0 && time(NULL) - last_update_time >= 1) {
+                       std::cerr << " Migrated " << count << " blocks, "
+                               << (100.0 * count / blocks.size()) << "% completed.\r";
+                       new_db->endSave();
+                       new_db->beginSave();
+                       last_update_time = time(NULL);
                }
        }
+       std::cerr << std::endl;
+       new_db->endSave();
+       delete old_db;
+       delete new_db;
 
-       {
-               infostream << "Around 5000/ms should do well here." << std::endl;
-               TimeTaker timer("Testing mutex speed");
-
-               JMutex m;
-               u32 n = 0;
-               u32 i = 0;
-               do {
-                       n += 10000;
-                       for (; i < n; i++) {
-                               m.Lock();
-                               m.Unlock();
-                       }
-               }
-               // Do at least 10ms
-               while(timer.getTimerTime() < 10);
+       actionstream << "Successfully migrated " << count << " blocks" << std::endl;
+       world_mt.set("backend", migrate_to);
+       if (!world_mt.updateConfigFile(world_mt_path.c_str()))
+               errorstream << "Failed to update world.mt!" << std::endl;
+       else
+               actionstream << "world.mt updated" << std::endl;
 
-               u32 dtime = timer.stop();
-               u32 per_ms = n / dtime;
-               infostream << "Done. " << dtime << "ms, " << per_ms << "/ms" << std::endl;
-       }
+       return true;
 }
-#endif