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/*
Minetest
Copyright (C) 2017 Dumbeldor, Vincent Glize <vincent.glize@live.fr>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#pragma once

#include "l_base.h"

class LocalPlayer;

class LuaLocalPlayer : public ModApiBase
{
private:
	static const char className[];
	static const luaL_Reg methods[];

	// garbage collector
	static int gc_object(lua_State *L);

	// get_velocity(self)
	static int l_get_velocity(lua_State *L);

	// get_hp(self)
	static int l_get_hp(lua_State *L);

	// get_name(self)
	static int l_get_name(lua_State *L);

	// get_wield_index(self)
	static int l_get_wield_index(lua_State *L);

	// get_wielded_item(self)
	static int l_get_wielded_item(lua_State *L);

	static int l_is_attached(lua_State *L);
	static int l_is_touching_ground(lua_State *L);
	static int l_is_in_liquid(lua_State *L);
	static int l_is_in_liquid_stable(lua_State *L);
	static int l_get_liquid_viscosity(lua_State *L);
	static int l_is_climbing(lua_State *L);
	static int l_swimming_vertical(lua_State *L);

	static int l_get_physics_override(lua_State *L);

	static int l_get_override_pos(lua_State *L);

	static int l_get_last_pos(lua_State *L);
	static int l_get_last_velocity(lua_State *L);
	static int l_get_last_look_vertical(lua_State *L);
	static int l_get_last_look_horizontal(lua_State *L);

	// get_control(self)
	static int l_get_control(lua_State *L);

	// get_breath(self)
	static int l_get_breath(lua_State *L);

	// get_pos(self)
	static int l_get_pos(lua_State *L);

	// get_movement_acceleration(self)
	static int l_get_movement_acceleration(lua_State *L);

	// get_movement_speed(self)
	static int l_get_movement_speed(lua_State *L);

	// get_movement(self)
	static int l_get_movement(lua_State *L);

	// get_armor_groups(self)
	static int l_get_armor_groups(lua_State *L);

	// hud_add(self, id, form)
	static int l_hud_add(lua_State *L);

	// hud_rm(self, id)
	static int l_hud_remove(lua_State *L);

	// hud_change(self, id, stat, data)
	static int l_hud_change(lua_State *L);
	// hud_get(self, id)
	static int l_hud_get(lua_State *L);

	LocalPlayer *m_localplayer = nullptr;

public:
	LuaLocalPlayer(LocalPlayer *m);
	~LuaLocalPlayer() = default;

	static void create(lua_State *L, LocalPlayer *m);

	static LuaLocalPlayer *checkobject(lua_State *L, int narg);
	static LocalPlayer *getobject(LuaLocalPlayer *ref);
	static LocalPlayer *getobject(lua_State *L, int narg);

	static void Register(lua_State *L);
};
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/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "irrlicht.h" // createDevice
#include "irrlichttypes_extrabloated.h"
#include "chat_interface.h"
#include "debug.h"
#include "unittest/test.h"
#include "server.h"
#include "filesys.h"
#include "version.h"
#include "client/game.h"
#include "defaultsettings.h"
#include "gettext.h"
#include "log.h"
#include "quicktune.h"
#include "httpfetch.h"
#include "gameparams.h"
#include "database/database.h"
#include "config.h"
#include "player.h"
#include "porting.h"
#include "network/socket.h"
#if USE_CURSES
	#include "terminal_chat_console.h"
#endif
#ifndef SERVER
#include "gui/guiMainMenu.h"
#include "client/clientlauncher.h"
#include "gui/guiEngine.h"
#include "gui/mainmenumanager.h"
#endif

#ifdef HAVE_TOUCHSCREENGUI
	#include "gui/touchscreengui.h"
#endif

#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;

/**********************************************************************
 * Private functions
 **********************************************************************/

static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args);
static void set_allowed_options(OptionList *allowed_options);

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, bool print_name = true, bool print_path = true);
static void print_modified_quicktune_values();

static void list_game_ids();
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(const Settings &cmd_args, int argc, char *argv[]);
static void startup_message();
static bool read_config_file(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);

static bool game_configure_world(GameParams *game_params, const Settings &cmd_args);
static bool get_world_from_cmdline(GameParams *game_params, const Settings &cmd_args);
static bool get_world_from_config(GameParams *game_params, const Settings &cmd_args);
static bool auto_select_world(GameParams *game_params);
static std::string get_clean_world_path(const std::string &path);

static bool game_configure_subgame(GameParams *game_params, const Settings &cmd_args);
static bool get_game_from_cmdline(GameParams *game_params, const Settings &cmd_args);
static bool determine_subgame(GameParams *game_params);

static bool run_dedicated_server(const GameParams &game_params, const Settings &cmd_args);
static bool migrate_map_database(const GameParams &game_params, const Settings &cmd_args);

/**********************************************************************/


FileLogOutput file_log_output;

static OptionList allowed_options;

int main(int argc, char *argv[])
{
	int retval;
	debug_set_exception_handler();

	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;
	}

	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;
	}

	// Debug handler
	BEGIN_DEBUG_EXCEPTION_HANDLER

	// List gameids if requested
	if (cmd_args.exists("gameid") && cmd_args.get("gameid") == "list") {
		list_game_ids();
		return 0;
	}

	// 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;
	}

	if (!init_common(cmd_args, argc, argv))
		return 1;

	if (g_settings->getBool("enable_console"))
		porting::attachOrCreateConsole();

#ifndef __ANDROID__
	// Run unit 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
	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;

	sanity_check(!game_params.world_path.empty());

	infostream << "Using commanded world path ["
	           << game_params.world_path << "]" << std::endl;

	if (game_params.is_dedicated_server)
		return run_dedicated_server(game_params, cmd_args) ? 0 : 1;

#ifndef SERVER
	ClientLauncher launcher;
	retval = launcher.run(game_params, cmd_args) ? 0 : 1;
#else
	retval = 0;
#endif

	// Update configuration file
	if (!g_settings_path.empty())
		g_settings->updateConfigFile(g_settings_path.c_str());

	print_modified_quicktune_values();

	// Stop httpfetch thread (if started)
	httpfetch_cleanup();

	END_DEBUG_EXCEPTION_HANDLER

	return retval;
}


/*****************************************************************************
 * Startup / Init
 *****************************************************************************/


static bool get_cmdline_opts(int argc, char *argv[], Settings *cmd_args)
{
	set_allowed_options(&allowed_options);

	return cmd_args->parseCommandLine(argc, argv, allowed_options);
}

static void set_allowed_options(OptionList *allowed_options)
{
	allowed_options->clear();

	allowed_options->insert(std::make_pair("help", ValueSpec(VALUETYPE_FLAG,
			_("Show allowed options"))));
	allowed_options->insert(std::make_pair("version", ValueSpec(VALUETYPE_FLAG,
			_("Show version information"))));
	allowed_options->insert(std::make_pair("config", ValueSpec(VALUETYPE_STRING,
			_("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("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 if used with option --go)"))));
	allowed_options->insert(std::make_pair("worldname", ValueSpec(VALUETYPE_STRING,
			_("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,
			_("Print even more information to console"))));
	allowed_options->insert(std::make_pair("trace", ValueSpec(VALUETYPE_FLAG,
			_("Print enormous amounts of information to log and console"))));
	allowed_options->insert(std::make_pair("logfile", ValueSpec(VALUETYPE_STRING,
			_("Set logfile path ('' = no logging)"))));
	allowed_options->insert(std::make_pair("gameid", ValueSpec(VALUETYPE_STRING,
			_("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"))));
	allowed_options->insert(std::make_pair("speedtests", ValueSpec(VALUETYPE_FLAG,
			_("Run speed tests"))));
	allowed_options->insert(std::make_pair("address", ValueSpec(VALUETYPE_STRING,
			_("Address to connect to. ('' = local game)"))));
	allowed_options->insert(std::make_pair("random-input", ValueSpec(VALUETYPE_FLAG,
			_("Enable random user input, for testing"))));
	allowed_options->insert(std::make_pair("server", ValueSpec(VALUETYPE_FLAG,
			_("Run dedicated server"))));
	allowed_options->insert(std::make_pair("name", ValueSpec(VALUETYPE_STRING,
			_("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)
{
	std::cout << _("Allowed options:") << std::endl;
	print_allowed_options(allowed_options);
}

static void print_allowed_options(const OptionList &allowed_options)
{
	for (const auto &allowed_option : allowed_options) {
		std::ostringstream os1(std::ios::binary);
		os1 << "  --" << allowed_option.first;
		if (allowed_option.second.type != VALUETYPE_FLAG)
			os1 << _(" <value>");

		std::cout << padStringRight(os1.str(), 30);

		if (allowed_option.second.help)
			std::cout << allowed_option.second.help;

		std::cout << std::endl;
	}
}

static void print_version()
{
	std::cout << PROJECT_NAME_C " " << g_version_hash
		<< " (" << porting::getPlatformName() << ")" << std::endl;
#ifndef SERVER
	std::cout << "Using Irrlicht " IRRLICHT_SDK_VERSION << std::endl;
#endif
	std::cout << g_build_info << std::endl;
}

static void list_game_ids()
{
	std::set<std::string> gameids = getAvailableGameIds();
	for (const std::string &gameid : gameids)
		std::cout << gameid <<std::endl;
}

static void list_worlds(bool print_name, bool print_path)
{
	std::cout << _("Available worlds:") << std::endl;
	std::vector<WorldSpec> worldspecs = getAvailableWorlds();
	print_worldspecs(worldspecs, std::cout, print_name, print_path);
}

static void print_worldspecs(const std::vector<WorldSpec> &worldspecs,
	std::ostream &os, bool print_name, bool print_path)
{
	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;
		}
	}
}

static void print_modified_quicktune_values()
{
	bool header_printed = false;
	std::vector<std::string> names = getQuicktuneNames();

	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 << name << " = " << val.getString() << std::endl;
	}
}

static bool setup_log_params(const Settings &cmd_args)
{
	// Quiet mode, print errors only
	if (cmd_args.getFlag("quiet")) {
		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;
		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"))
		g_logger.addOutput(&stderr_output, LL_INFO);

	// In certain cases, output verbose level on stderr
	if (cmd_args.getFlag("verbose") || cmd_args.getFlag("trace"))
		g_logger.addOutput(&stderr_output, LL_VERBOSE);

	return true;
}

static bool create_userdata_path()
{
	bool success;

#ifdef __ANDROID__
	if (!fs::PathExists(porting::path_user)) {
		success = fs::CreateDir(porting::path_user);
	} else {
		success = true;
	}
	porting::copyAssets();
#else
	// Create user data directory
	success = fs::CreateDir(porting::path_user);
#endif

	return success;
}

static bool init_common(const Settings &cmd_args, int argc, char *argv[])
{
	startup_message();
	set_default_settings(g_settings);

	// Initialize sockets
	sockets_init();
	atexit(sockets_cleanup);

	if (!read_config_file(cmd_args))
		return false;

	init_log_streams(cmd_args);

	// Initialize random seed
	srand(time(0));
	mysrand(time(0));

	// Initialize HTTP fetcher
	httpfetch_init(g_settings->getS32("curl_parallel_limit"));

	init_gettext(porting::path_locale.c_str(),
		g_settings->get("language"), argc, argv);

	return true;
}

static void startup_message()
{
	infostream << PROJECT_NAME << " " << _("with")
	           << " SER_FMT_VER_HIGHEST_READ="
               << (int)SER_FMT_VER_HIGHEST_READ << ", "
               << g_build_info << std::endl;
}

static bool read_config_file(const Settings &cmd_args)
{
	// Path of configuration file in use
	sanity_check(g_settings_path == "");	// Sanity check

	if (cmd_args.exists("config")) {
		bool r = g_settings->readConfigFile(cmd_args.get("config").c_str());
		if (!r) {
			errorstream << "Could not read configuration from \""
			            << cmd_args.get("config") << "\"" << std::endl;
			return false;
		}
		g_settings_path = cmd_args.get("config");
	} else {
		std::vector<std::string> filenames;
		filenames.push_back(porting::path_user + DIR_DELIM + "minetest.conf");
		// Legacy configuration file location
		filenames.push_back(porting::path_user +
				DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");

#if RUN_IN_PLACE
		// Try also from a lower level (to aid having the same configuration
		// for many RUN_IN_PLACE installs)
		filenames.push_back(porting::path_user +
				DIR_DELIM + ".." + DIR_DELIM + ".." + DIR_DELIM + "minetest.conf");
#endif

		for (const std::string &filename : filenames) {
			bool r = g_settings->readConfigFile(filename.c_str());
			if (r) {
				g_settings_path = filename;
				break;
			}
		}

		// If no path found, use the first one (menu creates the file)
		if (g_settings_path.empty())
			g_settings_path = filenames[0];
	}

	return true;
}

static void init_log_streams(const Settings &cmd_args)
{
	std::string log_filename = porting::path_user + DIR_DELIM + DEBUGFILE;

	if (cmd_args.exists("logfile"))
		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];
	}

	if (log_filename.empty() || conf_loglev.empty())  // No logging
		return;

	LogLevel log_level = Logger::stringToLevel(conf_loglev);
	if (log_level == LL_MAX) {
		warningstream << "Supplied unrecognized debug_log_level; "
			"using maximum." << std::endl;
	}

	verbosestream << "log_filename = " << log_filename << std::endl;

	file_log_output.open(log_filename);