src/script/lua_api/l_mainmenu.cpp


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/*
Minetest
Copyright (C) 2013 sapier

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 "lua_api/l_mainmenu.h"
#include "lua_api/l_internal.h"
#include "common/c_content.h"
#include "cpp_api/s_async.h"
#include "guiEngine.h"
#include "guiMainMenu.h"
#include "guiKeyChangeMenu.h"
#include "guiFileSelectMenu.h"
#include "subgame.h"
#include "version.h"
#include "porting.h"
#include "filesys.h"
#include "convert_json.h"
#include "serverlist.h"
#include "mapgen.h"
#include "sound.h"
#include "settings.h"
#include "log.h"
#include "EDriverTypes.h"

#include <IFileArchive.h>
#include <IFileSystem.h>

/******************************************************************************/
std::string ModApiMainMenu::getTextData(lua_State *L, std::string name)
{
	lua_getglobal(L, "gamedata");

	lua_getfield(L, -1, name.c_str());

	if(lua_isnil(L, -1))
		return "";

	return luaL_checkstring(L, -1);
}

/******************************************************************************/
int ModApiMainMenu::getIntegerData(lua_State *L, std::string name,bool& valid)
{
	lua_getglobal(L, "gamedata");

	lua_getfield(L, -1, name.c_str());

	if(lua_isnil(L, -1)) {
		valid = false;
		return -1;
		}

	valid = true;
	return luaL_checkinteger(L, -1);
}

/******************************************************************************/
int ModApiMainMenu::getBoolData(lua_State *L, std::string name,bool& valid)
{
	lua_getglobal(L, "gamedata");

	lua_getfield(L, -1, name.c_str());

	if(lua_isnil(L, -1)) {
		valid = false;
		return false;
		}

	valid = true;
	return lua_toboolean(L, -1);
}

/******************************************************************************/
int ModApiMainMenu::l_update_formspec(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);

	if (engine->m_startgame)
		return 0;

	//read formspec
	std::string formspec(luaL_checkstring(L, 1));

	if (engine->m_formspecgui != 0) {
		engine->m_formspecgui->setForm(formspec);
	}

	return 0;
}

/******************************************************************************/
int ModApiMainMenu::l_start(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);

	//update c++ gamedata from lua table

	bool valid = false;

	MainMenuData *data = engine->m_data;

	data->selected_world = getIntegerData(L, "selected_world",valid) -1;
	data->simple_singleplayer_mode = getBoolData(L,"singleplayer",valid);
	data->do_reconnect = getBoolData(L, "do_reconnect", valid);
	if (!data->do_reconnect) {
		data->name     = getTextData(L,"playername");
		data->password = getTextData(L,"password");
		data->address  = getTextData(L,"address");
		data->port     = getTextData(L,"port");
	}
	data->serverdescription = getTextData(L,"serverdescription");
	data->servername        = getTextData(L,"servername");

	//close menu next time
	engine->m_startgame = true;
	return 0;
}

/******************************************************************************/
int ModApiMainMenu::l_close(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);

	engine->m_kill = true;
	return 0;
}

/******************************************************************************/
int ModApiMainMenu::l_set_background(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);

	std::string backgroundlevel(luaL_checkstring(L, 1));
	std::string texturename(luaL_checkstring(L, 2));

	bool tile_image = false;
	bool retval     = false;
	unsigned int minsize = 16;

	if (!lua_isnone(L, 3)) {
		tile_image = lua_toboolean(L, 3);
	}

	if (!lua_isnone(L, 4)) {
		minsize = lua_tonumber(L, 4);
	}

	if (backgroundlevel == "background") {
		retval |= engine->setTexture(TEX_LAYER_BACKGROUND, texturename,
				tile_image, minsize);
	}

	if (backgroundlevel == "overlay") {
		retval |= engine->setTexture(TEX_LAYER_OVERLAY, texturename,
				tile_image, minsize);
	}

	if (backgroundlevel == "header") {
		retval |= engine->setTexture(TEX_LAYER_HEADER,  texturename,
				tile_image, minsize);
	}

	if (backgroundlevel == "footer") {
		retval |= engine->setTexture(TEX_LAYER_FOOTER, texturename,
				tile_image, minsize);
	}

	lua_pushboolean(L,retval);
	return 1;
}

/******************************************************************************/
int ModApiMainMenu::l_set_clouds(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);

	bool value = lua_toboolean(L,1);

	engine->m_clouds_enabled = value;

	return 0;
}

/******************************************************************************/
int ModApiMainMenu::l_get_textlist_index(lua_State *L)
{
	// get_table_index accepts both tables and textlists
	return l_get_table_index(L);
}

/******************************************************************************/
int ModApiMainMenu::l_get_table_index(lua_State *L)
{
	GUIEngine* engine = getGuiEngine(L);
	sanity_check(engine != NULL);