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	diff --git a/CMakeLists.txt b/CMakeLists.txt
	index 40db574..e4fbdf8 100644
	--- a/CMakeLists.txt
	+++ b/CMakeLists.txt
	@@ -1,165 +1,182 @@
	Project (meandmyshadow)
	CMake_Minimum_Required (VERSION 3.1)
	Set (CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")

	Option (DEBUG_MODE "Compile the game with debug mode enabled" OFF)
	+Option (DISABLED_DEBUG_STUFF "Enable this you'll see a lot of annoying script debug messages which will lag the game." OFF)

	#Find the required libraries.
	Find_Package (SDL2 REQUIRED)
	Find_Package (SDL2_image REQUIRED)
	Find_Package (SDL2_ttf REQUIRED)
	Find_Package (SDL2_mixer REQUIRED)
	Find_Package (CURL REQUIRED)
	Find_Package (LibArchive REQUIRED)
	Find_Package (Lua REQUIRED)

	if (NOT SDL2_FOUND)
	- message (FATAL_ERROR "SDL2 library could not be found!")
	+ message (FATAL_ERROR "SDL2 library could not be found!")
	endif (NOT SDL2_FOUND)

	if (NOT SDL2_IMAGE_FOUND)
	- message (FATAL_ERROR "SDL2_image library could not be found!")
	+ message (FATAL_ERROR "SDL2_image library could not be found!")
	endif (NOT SDL2_IMAGE_FOUND)

	if (NOT SDL2_TTF_FOUND)
	- message (FATAL_ERROR "SDL2_ttf library could not be found!")
	+ message (FATAL_ERROR "SDL2_ttf library could not be found!")
	endif (NOT SDL2_TTF_FOUND)

	if (NOT SDL2_MIXER_FOUND)
	- message (FATAL_ERROR "SDL2_mixer library could not be found!")
	+ message (FATAL_ERROR "SDL2_mixer library could not be found!")
	endif (NOT SDL2_MIXER_FOUND)

	if (NOT CURL_FOUND)
	message(FATAL_ERROR "CURL library could not be found!")
	endif (NOT CURL_FOUND)

	if (NOT LibArchive_FOUND)
	message (FATAL_ERROR "LibArchive library could not be found!")
	endif (NOT LibArchive_FOUND)

	if (NOT LUA_FOUND)
	message (FATAL_ERROR "Lua library could not be found!")
	endif (NOT LUA_FOUND)

	if (LUA_VERSION_STRING VERSION_LESS "5.2")
	- message (FATAL_ERROR "Lua version too old ${LUA_VERSION_STRING}, expected at least 5.2!")
	+ message (FATAL_ERROR "Lua version too old ${LUA_VERSION_STRING}, expected at least 5.2!")
	endif ()

	# check version from Globals.h
	file(READ "${PROJECT_SOURCE_DIR}/src/Globals.h" GLOBALS_H)
	string(REGEX MATCH "version[ ]=[ ]\"[^\"]*\"" MNMS_VERSION_STR ${GLOBALS_H})
	string(REGEX REPLACE "^[^\"]\"([^\"])\".*$" "\\1" MNMS_VERSION_STR ${MNMS_VERSION_STR})
	message(STATUS "The version read from Globals.h is: ${MNMS_VERSION_STR}")

	string(REGEX REPLACE "^V([0-9.]+).*$" "\\1" MNMS_VERSION_NUM ${MNMS_VERSION_STR})
	set(MNMS_VERSION_NUM "${MNMS_VERSION_NUM}.0.0.0.0")
	string(REGEX REPLACE "^([0-9]+)[.]([0-9]+)[.]([0-9]+)[.]([0-9]+).*$" "\\1,\\2,\\3,\\4" MNMS_VERSION_NUM ${MNMS_VERSION_NUM})
	message(STATUS "which is: ${MNMS_VERSION_NUM}")

	# check version from git
	find_package(Git)
	if(GIT_FOUND)
	exec_program(${GIT_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR} ARGS "describe"
	OUTPUT_VARIABLE MNMS_GIT_VERSION RETURN_VALUE GIT_RETURN_VALUE)
	if(GIT_RETURN_VALUE STREQUAL "0")
	set(MNMS_VERSION_STR "${MNMS_VERSION_STR} (${MNMS_GIT_VERSION})")
	message(STATUS "The version read from git is: ${MNMS_GIT_VERSION}")
	else()
	# possibly there are no any tags
	exec_program(${GIT_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR} ARGS "rev-parse --short HEAD"
	OUTPUT_VARIABLE MNMS_GIT_VERSION RETURN_VALUE GIT_RETURN_VALUE)
	if(GIT_RETURN_VALUE STREQUAL "0")
	set(MNMS_VERSION_STR "${MNMS_VERSION_STR} (git ${MNMS_GIT_VERSION})")
	message(STATUS "The version read from git is: ${MNMS_GIT_VERSION}")
	endif()
	endif()
	endif()

	# show version information on Windows
	Set(WIN32_RESOURCES )
	if(WIN32)
	Configure_File (
	"${PROJECT_SOURCE_DIR}/icons/windows-icon/res.rc.in"
	"${PROJECT_BINARY_DIR}/res.rc"
	)
	Set(WIN32_RESOURCES ${PROJECT_BINARY_DIR}/res.rc)
	Include_Directories(${PROJECT_SOURCE_DIR}/icons/windows-icon/)
	SOURCE_GROUP("Source Files\\Resources" FILES ${WIN32_RESOURCES})
	endif()

	#Parse the configure file.
	Configure_File (
	"${PROJECT_SOURCE_DIR}/src/config.h.in"
	"${PROJECT_BINARY_DIR}/config.h"
	)

	+#Add some missing libraries to Windows.
	if(WIN32)
	include_directories(${PROJECT_SOURCE_DIR}/src/libs/dirent)
	endif(WIN32)

	+#Disable some annoying warnings.
	+if(MSVC)
	+ # warning C4996: '***': This function or variable may be unsafe
	+ add_definitions(/wd4996)
	+else()
	+ # Assume it's gcc or clang
	+ # warning: '***' overrides a member function but is not marked 'override'
	+ add_definitions(-Wno-inconsistent-missing-override)
	+endif()
	+
	+#Define some debug stuff.
	+if(DEBUG_MODE)
	+ add_definitions(-DDEBUG)
	+ add_definitions(-D_DEBUG)
	+endif(DEBUG_MODE)
	+if(DISABLED_DEBUG_STUFF)
	+ add_definitions(-DDISABLED_DEBUG_STUFF)
	+endif(DISABLED_DEBUG_STUFF)
	+
	#Add the include directories of the (found) libraries.
	Include_Directories(
	${PROJECT_BINARY_DIR}
	- ${X11_X11_INCLUDE_PATH}
	- ${OPENGL_gl_INCLUDE_DIR}
	- ${SDL2_INCLUDE_DIR}
	- ${SDL2_IMAGE_INCLUDE_DIR}
	- ${SDL2_TTF_INCLUDE_DIR}
	- ${SDL2_MIXER_INCLUDE_DIR}
	+ ${SDL2_INCLUDE_DIR}
	+ ${SDL2_IMAGE_INCLUDE_DIR}
	+ ${SDL2_TTF_INCLUDE_DIR}
	+ ${SDL2_MIXER_INCLUDE_DIR}
	${CURL_INCLUDE_DIR}
	${LibArchive_INCLUDE_DIR}
	${LUA_INCLUDE_DIR}
	${PROJECT_SOURCE_DIR}/src/libs
	)

	#Set the output path and the source path.
	Set (EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR})
	Set (SRC_DIR ${PROJECT_SOURCE_DIR}/src)

	#List the source files.
	File (GLOB SOURCES ${SRC_DIR}/*.cpp)
	File (GLOB TINYGETTEXT ${SRC_DIR}/libs/tinygettext/*.cpp)
	File (GLOB FINDLOCALE ${SRC_DIR}/libs/findlocale/*.cpp)

	#Always use SDL_iconv in tinygettext
	add_definitions(-DHAVE_SDL)

	SOURCE_GROUP("Source Files\\tinygettext" FILES ${TINYGETTEXT})
	SOURCE_GROUP("Source Files\\findlocale" FILES ${FINDLOCALE})

	Add_Executable (meandmyshadow ${SOURCES} ${TINYGETTEXT} ${FINDLOCALE} ${WIN32_RESOURCES})

	set_property(TARGET meandmyshadow PROPERTY CXX_STANDARD 11)

	Target_Link_Libraries (
	meandmyshadow
	- ${OPENGL_gl_LIBRARY}
	- ${X11_X11_LIB}
	- ${SDL2_LIBRARY}
	- ${SDL2_IMAGE_LIBRARY}
	- ${SDL2_TTF_LIBRARY}
	- ${SDL2_MIXER_LIBRARY}
	+ ${SDL2_LIBRARY}
	+ ${SDL2_IMAGE_LIBRARY}
	+ ${SDL2_TTF_LIBRARY}
	+ ${SDL2_MIXER_LIBRARY}
	${SDL2MAIN_LIBRARY}
	${CURL_LIBRARY}
	${LibArchive_LIBRARY}
	${LUA_LIBRARIES}
	)

	#Path options
	Set (BINDIR "bin" CACHE STRING "Where to install binaries")
	Set (DATAROOTDIR "${CMAKE_INSTALL_PREFIX}/share" CACHE STRING "Sets the root of data directories to a non-default location")
	Set (ICONDIR "${DATAROOTDIR}/icons" CACHE STRING "Sets the icon directory for desktop entry to a non-default location.")
	Set (DESKTOPDIR "${DATAROOTDIR}/applications" CACHE STRING "Sets the desktop file directory for desktop entry to a non-default location.")

	#Install locations
	Install (DIRECTORY ${PROJECT_SOURCE_DIR}/data DESTINATION ${DATAROOTDIR}/meandmyshadow/)
	Install (FILES AUTHORS DESTINATION ${DATAROOTDIR}/meandmyshadow/)
	Install (TARGETS meandmyshadow RUNTIME DESTINATION ${BINDIR})

	if ("${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
	Install (FILES meandmyshadow.desktop DESTINATION ${DESKTOPDIR})
	Install (FILES icons/16x16/meandmyshadow.png DESTINATION ${ICONDIR}/hicolor/16x16/apps/)
	Install (FILES icons/32x32/meandmyshadow.png DESTINATION ${ICONDIR}/hicolor/32x32/apps/)
	Install (FILES icons/48x48/meandmyshadow.png DESTINATION ${ICONDIR}/hicolor/48x48/apps/)
	Install (FILES icons/64x64/meandmyshadow.png DESTINATION ${ICONDIR}/hicolor/64x64/apps/)
	endif ("${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
	diff --git a/src/ScriptUserData.cpp b/src/ScriptUserData.cpp
	index bb85865..79ccfbd 100644
	--- a/src/ScriptUserData.cpp
	+++ b/src/ScriptUserData.cpp
	@@ -1,25 +1,25 @@
	#include "ScriptUserData.h"
	#include <stdio.h>

	//Some debug functions
	void scriptUserClassDebugCreate(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2) {
	-#ifdef _DEBUG
	+#if defined(DISABLED_DEBUG_STUFF)
	printf("ScriptUserClass '%c%c%c%c' (%p) created userdata: %p\n",
	sig1,sig2,sig3,sig4,p1,p2);
	#endif
	}

	void scriptUserClassDebugInvalidate(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2) {
	-#ifdef _DEBUG
	+#if defined(DISABLED_DEBUG_STUFF)
	printf("ScriptUserClass '%c%c%c%c' (%p) invalidated userdata: %p\n",
	sig1,sig2,sig3,sig4,p1,p2);
	#endif
	}

	void scriptUserClassDebugUnlink(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2) {
	-#ifdef _DEBUG
	+#if defined(DISABLED_DEBUG_STUFF)
	printf("ScriptUserClass '%c%c%c%c' (%p) unlinked userdata: %p\n",
	sig1,sig2,sig3,sig4,p1,p2);
	#endif
	}

	diff --git a/src/ScriptUserData.h b/src/ScriptUserData.h
	index 6b32994..0d490cc 100644
	--- a/src/ScriptUserData.h
	+++ b/src/ScriptUserData.h
	@@ -1,266 +1,262 @@
	/*
	* Copyright (C) 2012 Me and My Shadow
	*
	* This file is part of Me and My Shadow.
	*
	* Me and My Shadow is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* Me and My Shadow 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 General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef SCRIPTUSERDATA_H
	#define SCRIPTUSERDATA_H

	extern "C" {
	#include "lua.h"
	#include "lualib.h"
	#include "lauxlib.h"
	}
	#include <string>
	#include <memory>

	-#ifdef _DEBUG
	#include <assert.h>
	-#endif

	-//NOTE: Enable this you'll see a lot of annoying script debug messages which will lag the game in debug mode.
	+//NOTE: Enable this you'll see a lot of annoying script debug messages which will lag the game.
	//#define DISABLED_DEBUG_STUFF

	-#if defined(_DEBUG) && defined(DISABLED_DEBUG_STUFF)
	+#if defined(DISABLED_DEBUG_STUFF)
	//Some debug functions
	void scriptUserClassDebugCreate(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2);
	void scriptUserClassDebugInvalidate(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2);
	void scriptUserClassDebugUnlink(char sig1,char sig2,char sig3,char sig4,const void* p1,const void* p2);
	#endif

	//A struct represents the Lua user data.
	struct ScriptUserData{
	char sig1,sig2,sig3,sig4;
	void* data;
	ScriptUserData* prev;
	ScriptUserData* next;
	};

	//A helper class to bind C++ class to Lua user data.
	template<char sig1,char sig2,char sig3,char sig4,class T>
	class ScriptUserClass{
	public:
	ScriptUserClass():scriptUserDataHead(NULL){
	}

	ScriptUserClass(const ScriptUserClass& other) = delete;

	ScriptUserClass& operator=(const ScriptUserClass& other) = delete;

	//Create a Lua user data pointed to this object. (-0,+1,e)
	//state: Lua state.
	//metatableName: Metatable name.
	void createUserData(lua_State* state,const char* metatableName){
	//Convert this object to T.
	//NOTE: we omit the runtime safety check, only leave the compile time check (by static_cast).
	T* obj=static_cast<T*>(this);

	//Create user data.
	ScriptUserData* ud=(ScriptUserData*)lua_newuserdata(state,sizeof(ScriptUserData));

	ud->sig1=sig1;
	ud->sig2=sig2;
	ud->sig3=sig3;
	ud->sig4=sig4;
	ud->data=obj;

	//Add it to the linked list.
	ud->next=scriptUserDataHead;
	ud->prev=NULL;
	if(scriptUserDataHead) scriptUserDataHead->prev=ud;
	scriptUserDataHead=ud;

	//Set matatable and we are done.
	luaL_getmetatable(state,metatableName);
	lua_setmetatable(state,-2);

	-#if defined(_DEBUG) && defined(DISABLED_DEBUG_STUFF)
	+#if defined(DISABLED_DEBUG_STUFF)
	scriptUserClassDebugCreate(sig1,sig2,sig3,sig4,this,ud);
	#endif
	}

	//Destroys all Lua user data associated to this object.
	void destroyUserData(){
	while(scriptUserDataHead){
	-#if defined(_DEBUG) && defined(DISABLED_DEBUG_STUFF)
	+#if defined(DISABLED_DEBUG_STUFF)
	scriptUserClassDebugInvalidate(sig1,sig2,sig3,sig4,this,scriptUserDataHead);
	#endif
	scriptUserDataHead->data=NULL;
	scriptUserDataHead=scriptUserDataHead->next;
	}
	}

	//Convert a Lua user data in Lua stack to object. (-0,+0,e)
	//state: Lua state.
	//idx: Index.
	//Returns: The object. NULL if this user data is invalid.
	//NOTE: This data should be a user data.
	static T* getObjectFromUserData(lua_State* state,int idx){
	ScriptUserData* ud=(ScriptUserData*)lua_touserdata(state,idx);

	if(ud && ud->sig1==sig1 && ud->sig2==sig2 && ud->sig3==sig3 && ud->sig4==sig4)
	return reinterpret_cast<T*>(ud->data);
	return NULL;
	}

	//Register __gc, __eq to given table. (-0,+0,e)
	//state: Lua state.
	//idx: Index.
	static void registerMetatableFunctions(lua_State *state,int idx){
	lua_pushstring(state,"__gc");
	lua_pushcfunction(state,&garbageCollectorFunction);
	lua_rawset(state,idx);
	lua_pushstring(state,"__eq");
	lua_pushcfunction(state,&checkEqualFunction);
	lua_rawset(state,idx);
	}

	virtual ~ScriptUserClass(){
	destroyUserData();
	}
	private:
	ScriptUserData* scriptUserDataHead;

	//The garbage collector (__gc) function.
	static int garbageCollectorFunction(lua_State* state){
	//Check if it's a user data. It can be a table (the library itself)
	if(!lua_isuserdata(state,1)) return 0;

	ScriptUserData* ud=(ScriptUserData*)lua_touserdata(state,1);

	if(ud){
	if(ud->data){
	-#if defined(_DEBUG)
	//It should be impossible unless there is a bug in code
	assert(ud->sig1==sig1 && ud->sig2==sig2 && ud->sig3==sig3 && ud->sig4==sig4);
	-#endif
	+
	//Unlink it
	if(ud->next) ud->next->prev=ud->prev;
	if(ud->prev) ud->prev->next=ud->next;
	else{
	ScriptUserClass* owner=static_cast<ScriptUserClass>(reinterpret_cast<T>(ud->data));
	owner->scriptUserDataHead=ud->next;
	}
	-#if defined(_DEBUG) && defined(DISABLED_DEBUG_STUFF)
	+#if defined(DISABLED_DEBUG_STUFF)
	scriptUserClassDebugUnlink(sig1,sig2,sig3,sig4,
	static_cast<ScriptUserClass>(reinterpret_cast<T>(ud->data)),ud);
	#endif
	}

	ud->data=NULL;
	ud->next=NULL;
	ud->prev=NULL;
	}

	return 0;
	}

	//The 'operator==' (__eq) function.
	static int checkEqualFunction(lua_State* state){
	//Check if it's a user data. It can be a table (the library itself)
	if(!lua_isuserdata(state,1) \|\| !lua_isuserdata(state,2)) return 0;

	ScriptUserData* ud1=(ScriptUserData*)lua_touserdata(state,1);
	ScriptUserData* ud2=(ScriptUserData*)lua_touserdata(state,2);

	if(ud1!=NULL && ud2!=NULL){
	-#ifdef _DEBUG
	//It should be impossible unless there is a bug in code
	assert(ud1->sig1==sig1 && ud1->sig2==sig2 && ud1->sig3==sig3 && ud1->sig4==sig4);
	assert(ud2->sig1==sig1 && ud2->sig2==sig2 && ud2->sig3==sig3 && ud2->sig4==sig4);
	-#endif
	+
	lua_pushboolean(state,ud1->data==ud2->data);
	return 1;
	}

	return 0;
	}
	};

	//Another helper class to bind C++ class to Lua user data.
	//This allows dynamic changes of the pointer which pointing to the actual C++ class.
	//Typical use case is a class which can dynamically create/delete during game running and has save/load feature.
	template<char sig1, char sig2, char sig3, char sig4, class T>
	class ScriptProxyUserClass {
	public:
	//The default constructor, which creates a new proxy object.
	ScriptProxyUserClass() : proxy(new Proxy()) {
	}

	//The copy constructor, which reuses proxy object from existing one.
	//NOTE: You must call this function in your copy constructor!!!
	ScriptProxyUserClass(const ScriptProxyUserClass& other) : proxy(other.proxy) {
	}

	ScriptProxyUserClass& operator=(const ScriptProxyUserClass& other) = delete;

	virtual ~ScriptProxyUserClass() {
	if (proxy->object == static_cast<T*>(this)) {
	proxy->object = NULL;
	}
	}

	//Set current object as active object, i.e. accessible from Lua.
	//Usually called when the object is created at the first time, or when the game is loaded.
	void setActive() {
	proxy->object = static_cast<T*>(this);
	}

	//Create a Lua user data pointed to this object. (-0,+1,e)
	//state: Lua state.
	//metatableName: Metatable name.
	void createUserData(lua_State* state, const char* metatableName) {
	assert(proxy->object == static_cast<T*>(this));
	proxy->createUserData(state, metatableName);
	}

	//Convert a Lua user data in Lua stack to object. (-0,+0,e)
	//state: Lua state.
	//idx: Index.
	//Returns: The object. NULL if this user data is invalid.
	//NOTE: This data should be a user data.
	static T* getObjectFromUserData(lua_State* state, int idx) {
	Proxy *p = Proxy::getObjectFromUserData(state, idx);
	if (p == NULL) return NULL;
	return p->object;
	}

	//Register __gc, __eq to given table. (-0,+0,e)
	//state: Lua state.
	//idx: Index.
	static void registerMetatableFunctions(lua_State *state, int idx) {
	Proxy::registerMetatableFunctions(state, idx);
	}

	private:
	class Proxy : public ScriptUserClass<sig1, sig2, sig3, sig4, Proxy> {
	friend class ScriptProxyUserClass;
	public:
	Proxy() : object(NULL) {
	}

	virtual ~Proxy() {
	}

	private:
	T *object;
	};

	std::shared_ptr<Proxy> proxy;
	};

	#endif
	diff --git a/src/StatisticsManager.cpp b/src/StatisticsManager.cpp
	index c566a78..0effaf3 100644
	--- a/src/StatisticsManager.cpp
	+++ b/src/StatisticsManager.cpp
	@@ -1,809 +1,803 @@
	/*
	* Copyright (C) 2012 Me and My Shadow
	*
	* This file is part of Me and My Shadow.
	*
	* Me and My Shadow is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* Me and My Shadow 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 General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include "StatisticsManager.h"
	#include "FileManager.h"
	#include "TreeStorageNode.h"
	#include "POASerializer.h"
	#include "Functions.h"
	#include "LevelPackManager.h"
	#include "MusicManager.h"
	#include "SoundManager.h"
	#include "ThemeManager.h"
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <time.h>
	#include <iostream>
	#include <fstream>
	#include <sstream>
	#include <vector>
	#include <map>
	#include "libs/tinyformat/tinyformat.h"
	#include <SDL_ttf.h>
	#if defined(WIN32)
	#define PRINTF_LONGLONG "%I64d"
	#else
	#define PRINTF_LONGLONG "%lld"
	#endif

	using namespace std;

	StatisticsManager statsMgr;

	static const int achievementDisplayTime=(FPS*4500)/1000;
	static const int achievementIntervalTime=achievementDisplayTime+(FPS*500)/1000;

	static map<string,AchievementInfo*> avaliableAchievements;

	//================================================================

	StatisticsManager::StatisticsManager(){
	bmDropShadow=NULL;
	bmQuestionMark=NULL;
	bmAchievement=NULL;

	startTime=time(NULL);

	tutorialLevels=0;

	clear();
	}

	void StatisticsManager::clear(){
	playerTravelingDistance=shadowTravelingDistance=0.0f;
	playerJumps=shadowJumps
	=playerDies=shadowDies
	=playerSquashed=shadowSquashed
	=completedLevels=silverLevels=goldLevels
	=recordTimes=switchTimes=swapTimes=saveTimes=loadTimes
	=playTime=levelEditTime
	=createdLevels=tutorialCompleted=tutorialGold=0;

	achievements.clear();
	queuedAchievements.clear();

	achievementTime=0;
	currentAchievement=0;
	if(bmAchievement){
	bmAchievement.reset();
	}
	}

	#define LOAD_STATS(var,func) { \
	vector<string> &v=node.attributes[ #var ]; \
	if(!v.empty() && !v[0].empty()) \
	var=func(v[0].c_str()); \
	}

	void StatisticsManager::loadFile(const std::string& fileName){
	clear();

	ifstream file(fileName.c_str());
	if(!file) return;

	TreeStorageNode node;
	POASerializer serializer;
	if(!serializer.readNode(file,&node,true)) return;

	//load statistics
	LOAD_STATS(playerTravelingDistance,atof);
	LOAD_STATS(shadowTravelingDistance,atof);
	LOAD_STATS(playerJumps,atoi);
	LOAD_STATS(shadowJumps,atoi);
	LOAD_STATS(playerDies,atoi);
	LOAD_STATS(shadowDies,atoi);
	LOAD_STATS(playerSquashed,atoi);
	LOAD_STATS(shadowSquashed,atoi);
	LOAD_STATS(recordTimes,atoi);
	LOAD_STATS(switchTimes,atoi);
	LOAD_STATS(swapTimes,atoi);
	LOAD_STATS(saveTimes,atoi);
	LOAD_STATS(loadTimes,atoi);
	LOAD_STATS(playTime,atoi);
	LOAD_STATS(levelEditTime,atoi);
	LOAD_STATS(createdLevels,atoi);

	//load achievements.
	//format is: name;time,name;time,...
	{
	vector<string> &v=node.attributes["achievements"];
	for(unsigned int i=0;i<v.size();i++){
	string s=v[i];
	time_t t=0;

	string::size_type lps=s.find(';');
	if(lps!=string::npos){
	string s1=s.substr(lps+1);
	s=s.substr(0,lps);

	long long n;
	sscanf(s1.c_str(),PRINTF_LONGLONG,&n);

	t=(time_t)n;
	}

	map<string,AchievementInfo*>::iterator it=avaliableAchievements.find(s);
	if(it!=avaliableAchievements.end()){
	OwnedAchievement ach={t,it->second};
	achievements[it->first]=ach;
	}
	}
	}
	}

	//Call when level edit is start
	void StatisticsManager::startLevelEdit(){
	levelEditStartTime=time(NULL);
	}

	//Call when level edit is end
	void StatisticsManager::endLevelEdit(){
	levelEditTime+=time(NULL)-levelEditStartTime;
	}

	//update in-game time
	void StatisticsManager::updatePlayTime(){
	time_t endTime=time(NULL);
	playTime+=endTime-startTime;
	startTime=endTime;
	}

	#define SAVE_STATS(var,pattern) { \
	sprintf(s,pattern,var); \
	node.attributes[ #var ].push_back(s); \
	}

	void StatisticsManager::saveFile(const std::string& fileName){
	char s[64];

	//update in-game time
	updatePlayTime();

	ofstream file(fileName.c_str());
	if(!file) return;

	TreeStorageNode node;

	//save statistics
	SAVE_STATS(playerTravelingDistance,"%.2f");
	SAVE_STATS(shadowTravelingDistance,"%.2f");
	SAVE_STATS(playerJumps,"%d");
	SAVE_STATS(shadowJumps,"%d");
	SAVE_STATS(playerDies,"%d");
	SAVE_STATS(shadowDies,"%d");
	SAVE_STATS(playerSquashed,"%d");
	SAVE_STATS(shadowSquashed,"%d");
	SAVE_STATS(recordTimes,"%d");
	SAVE_STATS(switchTimes,"%d");
	SAVE_STATS(swapTimes,"%d");
	SAVE_STATS(saveTimes,"%d");
	SAVE_STATS(loadTimes,"%d");
	SAVE_STATS(playTime,"%d");
	SAVE_STATS(levelEditTime,"%d");
	SAVE_STATS(createdLevels,"%d");

	//save achievements.
	//format is: name;time,name;time,...
	{
	vector<string>& v=node.attributes["achievements"];

	for(map<string,OwnedAchievement>::iterator it=achievements.begin();it!=achievements.end();++it){
	stringstream strm;
	char s[32];

	long long n=it->second.achievedTime;
	- sprintf(s,
	-#ifdef WIN32
	- "%I64d",
	-#else
	- "%Ld",
	-#endif
	- n);
	+ sprintf(s,PRINTF_LONGLONG,n);
	strm<<it->first<<";"<<s;

	v.push_back(strm.str());
	}
	}

	POASerializer serializer;
	serializer.writeNode(&node,file,true,true);
	}

	void StatisticsManager::loadPicture(SDL_Renderer& renderer, ImageManager& imageManager){
	//Load drop shadow picture
	bmDropShadow=imageManager.loadTexture(getDataPath()+"gfx/dropshadow.png", renderer);
	bmQuestionMark=imageManager.loadImage(getDataPath()+"gfx/menu/questionmark.png");
	}

	void StatisticsManager::registerAchievements(ImageManager& imageManager){
	if(!avaliableAchievements.empty()) return;

	for(int i=0;achievementList[i].id!=NULL;i++){
	avaliableAchievements[achievementList[i].id]=&achievementList[i];
	if(achievementList[i].imageFile!=NULL){
	achievementList[i].imageSurface = imageManager.loadImage(getDataPath()+achievementList[i].imageFile);
	}
	}
	}

	void StatisticsManager::render(ImageManager&,SDL_Renderer &renderer){
	if(achievementTime==0 && !bmAchievement && currentAchievement<(int)queuedAchievements.size()){
	//create surface
	bmAchievement=createAchievementSurface(renderer, queuedAchievements[currentAchievement++]);
	//FIXME: Draw the box.
	//drawGUIBox(0,0,bmAchievement->w,bmAchievement->h,bmAchievement,0xFFFFFF00);

	//check if queue is empty
	if(currentAchievement>=(int)queuedAchievements.size()){
	queuedAchievements.clear();
	currentAchievement=0;
	}

	//play a sound
	getSoundManager()->playSound("achievement", 1, false, 32);
	}

	//check if we need to display achievements
	if(bmAchievement){
	achievementTime++;
	if(achievementTime<=0){
	return;
	}else if(achievementTime<=5){
	drawAchievement(renderer,achievementTime);
	}else if(achievementTime<=achievementDisplayTime-5){
	drawAchievement(renderer,5);
	}else if(achievementTime<achievementDisplayTime){
	drawAchievement(renderer,achievementDisplayTime-achievementTime);
	}else if(achievementTime>=achievementIntervalTime){
	if(bmAchievement){
	bmAchievement.reset();
	}
	achievementTime=0;
	}
	}
	}

	void StatisticsManager::newAchievement(const std::string& id,bool save){
	//check avaliable achievements
	map<string,AchievementInfo*>::iterator it=avaliableAchievements.find(id);
	if(it==avaliableAchievements.end()) return;

	//check if already have this achievement
	if(save){
	map<string,OwnedAchievement>::iterator it2=achievements.find(id);
	if(it2!=achievements.end()) return;

	OwnedAchievement ach={time(NULL),it->second};
	achievements[id]=ach;
	}

	//add it to queue
	queuedAchievements.push_back(it->second);
	}

	time_t StatisticsManager::achievedTime(const std::string& id) {
	auto it = achievements.find(id);

	if (it == achievements.end()) return 0;
	else return it->second.achievedTime;
	}

	float StatisticsManager::getAchievementProgress(AchievementInfo* info){
	if(!strcmp(info->id,"experienced")){
	return float(completedLevels)/50.0f*100.0f;
	}
	if(!strcmp(info->id,"expert")){
	return float(goldLevels)/50.0f*100.0f;
	}
	if(!strcmp(info->id,"tutorial")){
	if(tutorialLevels>0)
	return float(tutorialCompleted)/float(tutorialLevels)*100.0f;
	else
	return 0.0f;
	}
	if(!strcmp(info->id,"tutorialGold")){
	if(tutorialLevels>0)
	return float(tutorialGold)/float(tutorialLevels)*100.0f;
	else
	return 0.0f;
	}
	if(!strcmp(info->id,"create50")){
	return float(createdLevels)/50.0f*100.0f;
	}
	if(!strcmp(info->id,"frog")){
	return float(playerJumps+shadowJumps)/1000.0f*100.0f;
	}
	if(!strcmp(info->id,"die50")){
	return float(playerDies+shadowDies)/50.0f*100.0f;
	}
	if(!strcmp(info->id,"die1000")){
	return float(playerDies+shadowDies)/1000.0f*100.0f;
	}
	if(!strcmp(info->id,"suqash50")){
	return float(playerSquashed+shadowSquashed)/50.0f*100.0f;
	}
	if(!strcmp(info->id,"travel100")){
	return (playerTravelingDistance+shadowTravelingDistance)/100.0f*100.0f;
	}
	if(!strcmp(info->id,"travel1k")){
	return (playerTravelingDistance+shadowTravelingDistance)/1000.0f*100.0f;
	}
	if(!strcmp(info->id,"travel10k")){
	return (playerTravelingDistance+shadowTravelingDistance)/10000.0f*100.0f;
	}
	if(!strcmp(info->id,"travel42k")){
	return (playerTravelingDistance+shadowTravelingDistance)/42195.0f*100.0f;
	}
	if(!strcmp(info->id,"record100")){
	return float(recordTimes)/100.0f*100.0f;
	}
	if(!strcmp(info->id,"record1k")){
	return float(recordTimes)/1000.0f*100.0f;
	}
	if(!strcmp(info->id,"switch100")){
	return float(switchTimes)/100.0f*100.0f;
	}
	if(!strcmp(info->id,"switch1k")){
	return float(switchTimes)/1000.0f*100.0f;
	}
	if(!strcmp(info->id,"swap100")){
	return float(swapTimes)/100.0f*100.0f;
	}
	if(!strcmp(info->id,"swap1k")){
	return float(swapTimes)/1000.0f*100.0f;
	}

	//not found
	return 0.0f;
	}

	SharedTexture StatisticsManager::createAchievementSurface(SDL_Renderer& renderer, AchievementInfo* info,SDL_Rect* rect,bool showTip,const time_t *achievedTime){
	if(info==NULL \|\| info->id==NULL) return NULL;

	//prepare text
	SurfacePtr title0(nullptr);
	SurfacePtr title1(nullptr);
	vector<SDL_Surface*> descSurfaces;
	SDL_Color fg = objThemes.getTextColor(true);
	int fontHeight=TTF_FontLineSkip(fontText);

	bool showDescription=false;
	bool showImage=false;
	float achievementProgress=0.0f;

	if(showTip){
	title0.reset(TTF_RenderUTF8_Blended(fontText,_("New achievement:"),fg));
	title1.reset(TTF_RenderUTF8_Blended(fontGUISmall,_(info->name),fg));
	showDescription=showImage=true;
	}else if(achievedTime){
	char s[128];
	strftime(s,sizeof(s),"%c",localtime(achievedTime));

	stringstream strm;
	tinyformat::format(strm,_("Achieved on %s"),s);

	title0.reset(TTF_RenderUTF8_Blended(fontGUISmall,_(info->name),fg));
	title1.reset(TTF_RenderUTF8_Blended(fontText,strm.str().c_str(),fg));
	showDescription=showImage=true;
	}else if(info->displayStyle==ACHIEVEMENT_HIDDEN){
	title0.reset(TTF_RenderUTF8_Blended(fontGUISmall,_("Unknown achievement"),fg));
	}else{
	if(info->displayStyle==ACHIEVEMENT_PROGRESS){
	achievementProgress=getAchievementProgress(info);

	stringstream strm;
	tinyformat::format(strm,_("Achieved %1.0f%%"),achievementProgress);

	title1.reset(TTF_RenderUTF8_Blended(fontText,strm.str().c_str(),fg));
	}else{
	title1.reset(TTF_RenderUTF8_Blended(fontText,_("Not achieved"),fg));
	}

	title0.reset(TTF_RenderUTF8_Blended(fontGUISmall,_(info->name),fg));

	showDescription= info->displayStyle==ACHIEVEMENT_ALL \|\| info->displayStyle==ACHIEVEMENT_PROGRESS;
	showImage=true;
	}

	if(info->description!=NULL && showDescription){
	string description=_(info->description);
	string::size_type lps=0,lpe;
	for(;;){
	lpe=description.find('\n',lps);
	if(lpe==string::npos){
	descSurfaces.push_back(TTF_RenderUTF8_Blended(fontText,(description.substr(lps)+' ').c_str(),fg));
	break;
	}else{
	descSurfaces.push_back(TTF_RenderUTF8_Blended(fontText,(description.substr(lps,lpe-lps)+' ').c_str(),fg));
	lps=lpe+1;
	}
	}
	}

	//calculate the size
	int w=0,h=0,w1=8,h1=0;

	if(title0!=NULL){
	if(title0->w>w) w=title0->w;
	h1+=title0->h;
	}
	if(title1!=NULL){
	if(title1->w>w) w=title1->w;
	h1+=title1->h;
	/*//calc progress bar size
	if(!showTip && !achievedTime && info->displayStyle==ACHIEVEMENT_PROGRESS){
	h1+=4;
	}*/
	}

	const int preferredImageWidth = 50;
	const int preferredImageHeight = 50;

	if(showImage){
	if(info->imageSurface!=NULL){
	// NEW: we have the preferred image size
	const int width = std::max(info->r.w, preferredImageWidth);
	const int height = std::max(info->r.h, preferredImageHeight);
	w1+=width+8;
	w+=width+8;
	if(height>h1) h1=height;
	}
	}else{
	w1+=bmQuestionMark->w+8;
	w+=bmQuestionMark->w+8;
	if(bmQuestionMark->h>h1) h1=bmQuestionMark->h;
	}

	h=h1+8;
	for(unsigned int i=0;i<descSurfaces.size();i++){
	if(descSurfaces[i]!=NULL){
	if(descSurfaces[i]->w>w) w=descSurfaces[i]->w;
	}
	}
	h+=descSurfaces.size()*fontHeight;
	w+=16;
	h+=16;

	//check if size is specified
	int left=0,top=0;
	if(rect!=NULL){
	//NOTE: SDL2 port. This was never used.
	/* if(surface!=NULL){
	left=rect->x;
	top=rect->y;
	}*/
	if(rect->w>0) w=rect->w;
	else rect->w=w;
	rect->h=h;
	}

	//create surface if necessary
	SurfacePtr surface = createSurface(w, h);
	std::unique_ptr<SDL_Renderer,decltype(&SDL_DestroyRenderer)> surfaceRenderer(
	SDL_CreateSoftwareRenderer(surface.get()), &SDL_DestroyRenderer);

	//draw background
	const SDL_Rect r={left,top,w,h};
	if(showTip \|\| achievedTime){
	SDL_FillRect(surface.get(),&r,SDL_MapRGB(surface->format,255,255,255));
	}else{
	SDL_FillRect(surface.get(),&r,SDL_MapRGB(surface->format,192,192,192));
	}

	//draw horizontal separator
	//FIXME: this is moved from StatisticsScreen::createGUI
	if (!showTip) {
	const SDL_Rect r0 = { left, top, w, 1 };
	const SDL_Rect r1 = { left, top + h - 2, w, 1 };
	const SDL_Rect r2 = { left, top + h - 1, w, 1 };
	Uint32 c0 = achievedTime ? SDL_MapRGB(surface->format, 224, 224, 224) : SDL_MapRGB(surface->format, 168, 168, 168);
	Uint32 c2 = achievedTime ? SDL_MapRGB(surface->format, 128, 128, 128) : SDL_MapRGB(surface->format, 96, 96, 96);
	SDL_FillRect(surface.get(), &r0, c0);
	SDL_FillRect(surface.get(), &r1, c0);
	SDL_FillRect(surface.get(), &r2, c2);
	}

	//draw picture
	if(showImage){
	if(info->imageSurface){
	// NEW: we have the preferred image size
	SDL_Rect r={left+8,top+8+(h1-info->r.h)/2,0,0};
	if (info->r.w < preferredImageWidth) r.x += (preferredImageWidth - info->r.w) / 2;
	SDL_BlitSurface(info->imageSurface,&info->r,surface.get(),&r);
	}
	}else{
	SDL_Rect r={left+8,top+8+(h1-bmQuestionMark->h)/2,0,0};
	SDL_BlitSurface(bmQuestionMark,NULL,surface.get(),&r);
	}

	//draw text
	h=8;
	if(title0){
	SDL_Rect r={left+w1,top+h,0,0};
	SDL_BlitSurface(title0.get(),NULL,surface.get(),&r);
	h+=title0->h;
	}
	if(title1){
	SDL_Rect r={left+w1,top+h,0,0};

	//Draw progress bar.
	if(!showTip && !achievedTime && info->displayStyle==ACHIEVEMENT_PROGRESS){
	//Draw borders.
	SDL_Rect r1={r.x,r.y,w-8-r.x,title1->h};
	drawGUIBox(r1.x,r1.y,r1.w,r1.h,*surfaceRenderer,0x1D);

	//Draw progress.
	r1.x++;
	r1.y++;
	r1.w=int(achievementProgress/100.0f*float(r1.w-2)+0.5f);
	r1.h-=2;

	SDL_SetRenderDrawColor(surfaceRenderer.get(),0,0,0,100);
	SDL_RenderFillRect(surfaceRenderer.get(),&r1);

	//shift the text a little bit (???)
	r.x+=2;
	r.y+=2;
	}

	//Draw text.
	SDL_BlitSurface(title1.get(),NULL,surface.get(),&r);
	}
	h=h1+16;
	for(unsigned int i=0;i<descSurfaces.size();i++){
	if(descSurfaces[i]!=NULL){
	SDL_Rect r={left+8,top+h+static_cast<int>(i)*fontHeight,0,0};
	SDL_BlitSurface(descSurfaces[i],NULL,surface.get(),&r);
	}
	}

	//clean up
	for(unsigned int i=0;i<descSurfaces.size();i++){
	if(descSurfaces[i]!=NULL){
	SDL_FreeSurface(descSurfaces[i]);
	}
	}
	//FIXME: Should we clear the vector here?



	//over
	return textureFromSurface(renderer, std::move(surface));
	}

	void StatisticsManager::drawAchievement(SDL_Renderer& renderer,int alpha){
	if(!bmAchievement \|\| alpha<=0) {
	return;
	}
	if(alpha>5) alpha=5;

	SDL_Rect r = rectFromTexture(*bmAchievement);
	int w=0,h=0;
	SDL_GetRendererOutputSize(&renderer, &w, &h);
	r.x = w-32-r.w;
	r.y = 32;

	SDL_SetTextureAlphaMod(bmAchievement.get(), alpha*40);
	applyTexture(r.x, r.y,bmAchievement, renderer);

	if(!bmDropShadow) {
	return;
	}

	//draw drop shadow - corner
	{
	int w1=r.w/2,w2=r.w-w1,h1=r.h/2,h2=r.h-h1;
	if(w1>16) w1=16;
	if(w2>16) w2=16;
	if(h1>16) h1=16;
	if(h2>16) h2=16;

	const int x=(5-alpha)*64;

	//top-left
	SDL_Rect r1={x,0,w1+16,h1+16};//),r2={r.x-16,r.y-16,0,0};
	SDL_Rect r2 ={r.x-16, r.y-16, r1.w, r1.h};
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	//top-right
	r1.x=x+48-w2;r2.w=r1.w =w2+16;r2.x=r.x+r.w-w2;
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	//bottom-right
	r1.y=48-h2;r2.h=r1.h=h2+16;r2.y=r.y+r.h-h2;
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	//bottom-left
	r1.x=x;r2.w=r1.w=w1+16;r2.x=r.x-16;
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	}
	//draw drop shadow - border
	int i=r.w-32;
	while(i>0){
	const int ii=i>128?128:i;

	//top
	SDL_Rect r1={0,256-alpha*16,ii,16};
	SDL_Rect r2={r.x+r.w-16-i,r.y-16,r1.w,r1.h};
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	//bottom
	r1.x=128;r2.y=r.y+r.h;
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);

	i-=ii;
	}
	i=r.h-32;
	while(i>0){
	const int ii=i>128?128:i;

	//top
	SDL_Rect r1={512-alpha*16,0,16,ii};
	SDL_Rect r2={r.x-16,r.y+r.h-16-i, r1.w, r1.h};
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);
	//bottom
	r1.y=128;r2.x=r.x+r.w;
	SDL_RenderCopy(&renderer, bmDropShadow.get(), &r1, &r2);

	i-=ii;
	}
	}

	void StatisticsManager::reloadCompletedLevelsAndAchievements(){
	completedLevels=silverLevels=goldLevels=0;

	LevelPackManager *lpm=getLevelPackManager();
	vector<pair<string,string> > v=lpm->enumLevelPacks();

	bool tutorial=false,tutorialIsGold=false;

	for(unsigned int i=0;i<v.size();i++){
	string& s=v[i].first;
	LevelPack *levels=lpm->getLevelPack(s);
	levels->loadProgress();

	bool b=false;
	if(s==lpm->tutorialLevelPackPath){
	tutorialLevels=levels->getLevelCount();
	tutorialCompleted=tutorialGold=0;
	b=tutorial=tutorialIsGold=true;
	}

	for(int n=0,m=levels->getLevelCount();n<m;n++){
	LevelPack::Level *lv=levels->getLevel(n);
	int medal=lv->won;
	if(medal){
	if(lv->targetTime<0 \|\| lv->time<=lv->targetTime)
	medal++;
	if(lv->targetRecordings<0 \|\| lv->recordings<=lv->targetRecordings)
	medal++;

	completedLevels++;
	if(b) tutorialCompleted++;
	if(medal==2) silverLevels++;
	if(medal==3){
	goldLevels++;
	if(b) tutorialGold++;
	}

	if(medal!=3 && b) tutorialIsGold=false;
	}else if(b){
	tutorial=tutorialIsGold=false;
	}
	}
	}

	//upadte achievements
	updateLevelAchievements();
	updateTutorialAchievementsInternal((tutorial?1:0)\|(tutorialIsGold?2:0));
	}

	void StatisticsManager::reloadOtherAchievements(){
	int i;

	if(playTime>=7200) newAchievement("addicted");
	if(playTime>=86400) newAchievement("loyalFan");

	if(levelEditTime>=7200) newAchievement("constructor");
	if(levelEditTime>=86400) newAchievement("constructor2");

	if(createdLevels>=1) newAchievement("create1");
	if(createdLevels>=50) newAchievement("create50");

	i=playerJumps+shadowJumps;
	if(i>=1000) newAchievement("frog");

	i=playerDies+shadowDies;
	if(i>=1) newAchievement("die1");
	if(i>=50) newAchievement("die50");
	if(i>=1000) newAchievement("die1000");

	i=playerSquashed+shadowSquashed;
	if(i>=1) newAchievement("squash1");
	if(i>=50) newAchievement("squash50");

	float d=playerTravelingDistance+shadowTravelingDistance;
	if(d>=100.0f) newAchievement("travel100");
	if(d>=1000.0f) newAchievement("travel1k");
	if(d>=10000.0f) newAchievement("travel10k");
	if(d>=42195.0f) newAchievement("travel42k");

	if(recordTimes>=100) newAchievement("record100");
	if(recordTimes>=1000) newAchievement("record1k");

	if(switchTimes>=100) newAchievement("switch100");
	if(switchTimes>=1000) newAchievement("switch1k");

	if(swapTimes>=100) newAchievement("swap100");
	if(swapTimes>=1000) newAchievement("swap1k");

	if(saveTimes>=1000) newAchievement("save1k");

	if(loadTimes>=1000) newAchievement("load1k");

	if(version.find("Development")!=string::npos) newAchievement("programmer");
	}

	//Update level specified achievements.
	//Make sure the completed level count is correct.
	void StatisticsManager::updateLevelAchievements(){
	if(completedLevels>=1) newAchievement("newbie");
	if(goldLevels>=1) newAchievement("goodjob");
	if(completedLevels>=50) newAchievement("experienced");
	if(goldLevels>=50) newAchievement("expert");
	}

	//Update tutorial specified achievements.
	//Make sure the level progress of tutorial is correct.
	void StatisticsManager::updateTutorialAchievements(){
	//find tutorial level pack
	LevelPackManager *lpm=getLevelPackManager();
	LevelPack *levels=lpm->getTutorialLevelPack();
	if(levels==NULL) return;

	bool tutorial=true,tutorialIsGold=true;
	tutorialLevels=levels->getLevelCount();
	tutorialCompleted=tutorialGold=0;

	for(int n=0,m=levels->getLevelCount();n<m;n++){
	LevelPack::Level *lv=levels->getLevel(n);
	int medal=lv->won;
	if(medal){
	if(lv->targetTime<0 \|\| lv->time<=lv->targetTime)
	medal++;
	if(lv->targetRecordings<0 \|\| lv->recordings<=lv->targetRecordings)
	medal++;

	tutorialCompleted++;

	if(medal!=3) tutorialIsGold=false;
	else tutorialGold++;
	}else{
	tutorial=tutorialIsGold=false;
	break;
	}
	}

	//upadte achievements
	updateTutorialAchievementsInternal((tutorial?1:0)\|(tutorialIsGold?2:0));
	}

	//internal function
	//flags: a bit-field value indicates which achievements we have.
	void StatisticsManager::updateTutorialAchievementsInternal(int flags){
	if(flags&1) newAchievement("tutorial");
	if(flags&2) newAchievement("tutorialGold");
	}

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