Functions.cpp
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Functions.cpp
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	/*
	* Copyright (C) 2011-2012 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 <stdio.h>
	#include <math.h>
	#include <algorithm>
	#include <SDL/SDL.h>
	#ifdef __APPLE__
	#include <SDL_mixer/SDL_mixer.h>
	#include <SDL_gfx/SDL_gfxPrimitives.h>
	#include <SDL_gfx/SDL_rotozoom.h>
	#else
	#include <SDL/SDL_mixer.h>
	#include <SDL/SDL_gfxPrimitives.h>
	#include <SDL/SDL_rotozoom.h>
	#endif
	#include <SDL/SDL_syswm.h>
	#include <string>
	#include "Globals.h"
	#include "Functions.h"
	#include "FileManager.h"
	#include "Objects.h"
	#include "Player.h"
	#include "GameObjects.h"
	#include "LevelPack.h"
	#include "TitleMenu.h"
	#include "LevelEditSelect.h"
	#include "LevelEditor.h"
	#include "Game.h"
	#include "LevelPlaySelect.h"
	#include "Addons.h"
	#include "InputManager.h"
	#include "ImageManager.h"
	#include "MusicManager.h"
	#include "LevelPackManager.h"
	#include "ThemeManager.h"
	#include "GUIListBox.h"
	#include "GUIOverlay.h"
	#include "StatisticsManager.h"
	#include "StatisticsScreen.h"
	#include "Cursors.h"

	#include "libs/tinyformat/tinyformat.h"
	#include "libs/tinygettext/tinygettext.hpp"
	#include "libs/tinygettext/log.hpp"
	extern "C" {
	#include "libs/findlocale/findlocale.h"
	}

	#ifdef HARDWARE_ACCELERATION
	#include <GL/gl.h>
	#include <GL/glu.h>

	//fix some Windows header bug
	#ifndef GL_BGR
	#define GL_BGR GL_BGR_EXT
	#endif
	#ifndef GL_BGRA
	#define GL_BGRA GL_BGRA_EXT
	#endif

	#endif
	using namespace std;

	#ifdef WIN32
	#include <windows.h>
	#include <shlobj.h>
	#else
	#include <strings.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <unistd.h>
	#include <dirent.h>
	#endif

	//Workaround for the resizing below 800x600 for X systems.
	#ifdef __linux__
	#include<X11/Xlib.h>
	#include<X11/Xutil.h>
	#endif

	//Initialise the imagemanager.
	//The ImageManager is used to prevent loading images multiple times.
	ImageManager imageManager;

	//Initialise the musicManager.
	//The MusicManager is used to prevent loading music files multiple times and for playing/fading music.
	MusicManager musicManager;

	//Initialise the levelPackManager.
	//The LevelPackManager is used to prevent loading levelpacks multiple times and for the game to know which levelpacks there are.
	LevelPackManager levelPackManager;

	//The scriptExecutor used for executing scripts.
	ScriptExecutor scriptExecutor;

	//Map containing changed settings using command line arguments.
	map<string,string> tmpSettings;
	//Pointer to the settings object.
	//It is used to load and save the settings file and change the settings.
	Settings* settings=0;

	#ifdef HARDWARE_ACCELERATION
	GLuint screenTexture;
	#endif

	SDL_Surface* loadImage(string file){
	//We use the imageManager to load the file.
	return imageManager.loadImage(file);
	}

	void applySurface(int x,int y,SDL_Surface* source,SDL_Surface* dest,SDL_Rect* clip){
	//The offset is needed to draw at the right location.
	SDL_Rect offset;
	offset.x=x;
	offset.y=y;

	//Let SDL do the drawing of the surface.
	SDL_BlitSurface(source,clip,dest,&offset);
	}

	void drawRect(int x,int y,int w,int h,SDL_Surface* dest,Uint32 color){
	//NOTE: We let SDL_gfx render it.
	rectangleRGBA(dest,x,y,x+w,y+h,color >> 24,color >> 16,color >> 8,255);
	}

	//Draw a box with anti-aliased borders using SDL_gfx.
	void drawGUIBox(int x,int y,int w,int h,SDL_Surface* dest,Uint32 color){
	//Fill content's background color from function parameter
	boxRGBA(dest,x+1,y+1,x+w-2,y+h-2,color >> 24,color >> 16,color >> 8,color >> 0);

	//Draw first black borders around content and leave 1 pixel in every corner
	lineRGBA(dest,x+1,y,x+w-2,y,0,0,0,255);
	lineRGBA(dest,x+1,y+h-1,x+w-2,y+h-1,0,0,0,255);
	lineRGBA(dest,x,y+1,x,y+h-2,0,0,0,255);
	lineRGBA(dest,x+w-1,y+1,x+w-1,y+h-2,0,0,0,255);

	//Fill the corners with transperent color to create anti-aliased borders
	pixelRGBA(dest,x,y,0,0,0,160);
	pixelRGBA(dest,x,y+h-1,0,0,0,160);
	pixelRGBA(dest,x+w-1,y,0,0,0,160);
	pixelRGBA(dest,x+w-1,y+h-1,0,0,0,160);

	//Draw second lighter border around content
	rectangleRGBA(dest,x+1,y+1,x+w-2,y+h-2,0,0,0,64);

	//Create anti-aliasing in corners of second border
	pixelRGBA(dest,x+1,y+1,0,0,0,50);
	pixelRGBA(dest,x+1,y+h-2,0,0,0,50);
	pixelRGBA(dest,x+w-2,y+1,0,0,0,50);
	pixelRGBA(dest,x+w-2,y+h-2,0,0,0,50);
	}

	void drawLine(int x1,int y1,int x2,int y2,SDL_Surface* dest,Uint32 color){
	//NOTE: We let SDL_gfx render it.
	lineRGBA(dest,x1,y1,x2,y2,color >> 24,color >> 16,color >> 8,255);
	}

	void drawLineWithArrow(int x1,int y1,int x2,int y2,SDL_Surface* dest,Uint32 color,int spacing,int offset,int xsize,int ysize){
	//Draw line first
	drawLine(x1,y1,x2,y2,dest,color);

	//calc delta and length
	double dx=x2-x1;
	double dy=y2-y1;
	double length=sqrt(dxdx+dydy);
	if(length<0.001) return;

	//calc the unit vector
	dx/=length; dy/=length;

	//Now draw arrows on it
	for(double p=offset;p<length;p+=spacing){
	drawLine(int(x1+pdx+0.5),int(y1+pdy+0.5),
	int(x1+(p-xsize)dx-ysizedy+0.5),int(y1+(p-xsize)dy+ysizedx+0.5),dest,color);
	drawLine(int(x1+pdx+0.5),int(y1+pdy+0.5),
	int(x1+(p-xsize)dx+ysizedy+0.5),int(y1+(p-xsize)dy-ysizedx+0.5),dest,color);
	}
	}

	bool createScreen(){
	//Check if we are going fullscreen.
	if(settings->getBoolValue("fullscreen"))
	pickFullscreenResolution();

	//Set the screen_width and height.
	SCREEN_WIDTH=atoi(settings->getValue("width").c_str());
	SCREEN_HEIGHT=atoi(settings->getValue("height").c_str());

	//Update the camera.
	camera.w=SCREEN_WIDTH;
	camera.h=SCREEN_HEIGHT;

	//Boolean if this is the first screen creation.
	bool initial=true;

	//Check if we should use gl or software rendering.
	if(settings->getBoolValue("gl")){
	#ifdef HARDWARE_ACCELERATION
	SDL_GL_SetAttribute(SDL_GL_RED_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE,8);

	SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE,16);
	SDL_GL_SetAttribute(SDL_GL_BUFFER_SIZE,32);

	SDL_GL_SetAttribute(SDL_GL_ACCUM_RED_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_ACCUM_GREEN_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_ACCUM_BLUE_SIZE,8);
	SDL_GL_SetAttribute(SDL_GL_ACCUM_ALPHA_SIZE,8);

	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS,0);
	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES,0);
	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER,1);

	//Set the video mode.
	Uint32 flags=SDL_HWSURFACE \| SDL_OPENGL;
	if(settings->getBoolValue("fullscreen"))
	flags\|=SDL_FULLSCREEN;
	else if(settings->getBoolValue("resizable"))
	flags\|=SDL_RESIZABLE;
	if(SDL_SetVideoMode(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,flags)==NULL){
	fprintf(stderr,"FATAL ERROR: SDL_SetVideoMode failed\n");
	return false;
	}

	//Delete the old screen.
	//Warning: only if previous mode is OpenGL mode.
	//NOTE: The previous mode can't switch during runtime.
	if(screen){
	SDL_FreeSurface(screen);
	screen=NULL;

	//There was a screen so this isn't the initial screen creation.
	initial=false;
	}

	//Create a screen
	screen=SDL_CreateRGBSurface(SDL_HWSURFACE,SCREEN_WIDTH,SCREEN_HEIGHT,32,0x00FF0000,0x0000FF00,0x000000FF,0);

	//Create a texture.
	glDeleteTextures(1,&screenTexture);
	glGenTextures(1,&screenTexture);

	//And set up gl correctly.
	glClearColor(0, 0, 0, 0);
	glClearDepth(1.0f);
	glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	glOrtho(0, SCREEN_WIDTH, SCREEN_HEIGHT, 0, 1, -1);
	glMatrixMode(GL_MODELVIEW);
	glEnable(GL_TEXTURE_2D);
	glLoadIdentity();
	#else
	//NOTE: Hardware accelerated rendering requested but compiled without.
	cerr<<"FATAL ERROR: Unable to use hardware acceleration (compiled without)."<<endl;
	return false;
	#endif
	}else{
	//Set the flags.
	Uint32 flags=SDL_HWSURFACE \| SDL_DOUBLEBUF;
	if(settings->getBoolValue("fullscreen"))
	flags\|=SDL_FULLSCREEN;
	else if(settings->getBoolValue("resizable"))
	flags\|=SDL_RESIZABLE;

	//Check if there already was a screen.
	if(screen)
	initial=false;

	//Create the screen and check if there weren't any errors.
	screen=SDL_SetVideoMode(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,flags);
	if(screen==NULL){
	fprintf(stderr,"FATAL ERROR: SDL_SetVideoMode failed\n");
	return false;
	}
	}

	//Now configure the newly created window (if windowed).
	if(settings->getBoolValue("fullscreen")==false)
	configureWindow(initial);

	//Create the temp surface, just a replica of the screen surface, free the previous one if any.
	if(tempSurface)
	SDL_FreeSurface(tempSurface);
	tempSurface=SDL_CreateRGBSurface(SDL_HWSURFACE\|SDL_SRCALPHA,
	screen->w,screen->h,screen->format->BitsPerPixel,
	screen->format->Rmask,screen->format->Gmask,screen->format->Bmask,0);

	//Set the the window caption.
	SDL_WM_SetCaption(("Me and My Shadow "+version).c_str(),NULL);
	SDL_EnableUNICODE(1);

	//Nothing went wrong so return true.
	return true;
	}

	#ifdef WIN32

	static WNDPROC m_OldWindowProc=NULL;

	static LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam){
	if(msg==WM_GETMINMAXINFO){
	if(m_OldWindowProc){
	CallWindowProc(m_OldWindowProc,hwnd,msg,wParam,lParam);
	}else{
	DefWindowProc(hwnd,msg,wParam,lParam);
	}

	RECT r={0,0,800,600};
	AdjustWindowRect(&r,GetWindowLong(hwnd,GWL_STYLE),FALSE);

	MINMAXINFO info=(MINMAXINFO)lParam;
	info->ptMinTrackSize.x=r.right-r.left;
	info->ptMinTrackSize.y=r.bottom-r.top;

	return 0;
	}else{
	if(m_OldWindowProc){
	return CallWindowProc(m_OldWindowProc,hwnd,msg,wParam,lParam);
	}else{
	return DefWindowProc(hwnd,msg,wParam,lParam);
	}
	}
	}

	#endif

	void pickFullscreenResolution(){
	//Vector that will hold the resolutions to choose from.
	vector<_res> resolutionList;

	//Enumerate available resolutions using SDL_ListModes()
	//Note: we enumerate fullscreen resolutions because
	// windowed resolutions always can be arbitrary
	if(resolutionList.empty()){
	SDL_Rect **modes=SDL_ListModes(NULL,SDL_FULLSCREEN\|SDL_HWSURFACE);

	if(modes==NULL \|\| ((intptr_t)modes) == -1){
	cout<<"Error: Can't enumerate available screen resolutions."
	" Use predefined screen resolutions list instead."<<endl;

	static const _res predefinedResolutionList[] = {
	{800,600},
	{1024,600},
	{1024,768},
	{1152,864},
	{1280,720},
	{1280,768},
	{1280,800},
	{1280,960},
	{1280,1024},
	{1360,768},
	{1366,768},
	{1440,900},
	{1600,900},
	{1600,1200},
	{1680,1080},
	{1920,1080},
	{1920,1200},
	{2560,1440},
	{3840,2160}
	};

	//Fill the resolutionList.
	for(unsigned int i=0;i<sizeof(predefinedResolutionList)/sizeof(_res);i++){
	resolutionList.push_back(predefinedResolutionList[i]);
	}
	}else{
	//Fill the resolutionList.
	for(unsigned int i=0;modes[i]!=NULL;i++){
	//Check if the resolution is higher than the minimum (800x600).
	if(modes[i]->w>=800 && modes[i]->h>=600){
	_res res={modes[i]->w, modes[i]->h};
	resolutionList.push_back(res);
	}
	}
	//Reverse it so that we begin with the lowest resolution.
	reverse(resolutionList.begin(),resolutionList.end());
	}
	}

	//The resolution that will hold the final result, we start with the minimum (800x600).
	_res closestMatch={800,600};
	int width=atoi(getSettings()->getValue("width").c_str());
	//int height=atoi(getSettings()->getValue("height").c_str());

	//Now loop through the resolutionList.
	for(int i=0;i<(int)resolutionList.size();i++){
	//The delta between the closestMatch and the resolution from the list.
	int dM=(closestMatch.w-resolutionList[i].w);
	//The delta between the target width and the resolution from the list.
	int dT=(width-resolutionList[i].w);

	//Since the resolutions are getting higher the lower (more negative) the further away it is.
	//That's why we check if the deltaMatch is lower than the the deltaTarget.
	if((dM)<(dT)){
	closestMatch.w=resolutionList[i].w;
	closestMatch.h=resolutionList[i].h;
	}
	}

	//Now set the resolution to the closest match.
	char s[64];
	sprintf(s,"%d",closestMatch.w);
	getSettings()->setValue("width",s);
	sprintf(s,"%d",closestMatch.h);
	getSettings()->setValue("height",s);
	}

	void configureWindow(bool initial){
	//We only need to configure the window if it's resizable.
	if(!getSettings()->getBoolValue("resizable"))
	return;

	//Retrieve the WM info from SDL containing the window handle.
	struct SDL_SysWMinfo wmInfo;
	SDL_VERSION(&wmInfo.version);
	SDL_GetWMInfo(&wmInfo);

	#ifdef __linux__
	//We assume that a linux system running meandmyshadow is also running an Xorg server.
	if(wmInfo.subsystem==SDL_SYSWM_X11){
	//Create the size hints to give to the window.
	XSizeHints* sizeHints;
	if(!(sizeHints=XAllocSizeHints())){
	cerr<<"ERROR: Unable to allocate memory for XSizeHings."<<endl;
	return;
	}

	//Configure the size hint.
	sizeHints->flags=PMinSize;
	sizeHints->min_width=800;
	sizeHints->min_height=600;

	//Set the normal hints of the window.
	(void)wmInfo.info.x11.lock_func;
	XSetNormalHints(wmInfo.info.x11.display,wmInfo.info.x11.wmwindow,sizeHints);
	(void)wmInfo.info.x11.unlock_func;

	//Free size hint structure
	XFree(sizeHints);
	}else{
	//No X11 so an unsupported window manager.
	cerr<<"WARNING: Unsupported window manager."<<endl;
	}
	#elif defined(WIN32)
	//We overwrite the window proc of SDL
	WNDPROC wndproc=(WNDPROC)GetWindowLong(wmInfo.window,GWL_WNDPROC);
	if(wndproc!=NULL && wndproc!=(WNDPROC)WindowProc){
	m_OldWindowProc=wndproc;
	SetWindowLong(wmInfo.window,GWL_WNDPROC,(LONG)(WNDPROC)WindowProc);
	}
	#endif
	}

	void onVideoResize(){
	//Check if the resize event isn't malformed.
	if(event.resize.w<=0 \|\| event.resize.h<=0)
	return;

	//Check the size limit.
	if(event.resize.w<800)
	event.resize.w=800;
	if(event.resize.h<600)
	event.resize.h=600;

	//Check if it really resizes.
	if(SCREEN_WIDTH==event.resize.w && SCREEN_HEIGHT==event.resize.h)
	return;

	char s[32];

	//Set the new width and height.
	sprintf(s,"%d",event.resize.w);
	getSettings()->setValue("width",s);
	sprintf(s,"%d",event.resize.h);
	getSettings()->setValue("height",s);

	//Do resizing.
	if(!createScreen())
	return;

	//Tell the theme to resize.
	if(!loadTheme(""))
	return;

	//The new resolution is valid.
	//Now we can save the settings. (TODO: should we save?)
	//saveSettings();

	//And let the currentState update it's GUI to the new resolution.
	currentState->resize();
	}

	//Include the scripting API.
	#include "ScriptAPI.h"

	bool init(){
	//Initialze SDL.
	if(SDL_Init(SDL_INIT_EVERYTHING)==-1) {
	fprintf(stderr,"FATAL ERROR: SDL_Init failed\n");
	return false;
	}

	//Initialze SDL_mixer (audio).
	if(Mix_OpenAudio(22050,MIX_DEFAULT_FORMAT,2,512)==-1){
	fprintf(stderr,"FATAL ERROR: Mix_OpenAudio failed\n");
	return false;
	}
	//Set the volume.
	Mix_Volume(-1,atoi(settings->getValue("sound").c_str()));

	//Initialze SDL_ttf (fonts).
	if(TTF_Init()==-1){
	fprintf(stderr,"FATAL ERROR: TTF_Init failed\n");
	return false;
	}

	//Create the screen.
	if(!createScreen())
	return false;

	//Load key config. Then initialize joystick support.
	inputMgr.loadConfig();
	inputMgr.openAllJoysitcks();

	//Init tinygettext for translations for the right language
	dictionaryManager = new tinygettext::DictionaryManager();
	dictionaryManager->add_directory(getDataPath()+"locale");
	dictionaryManager->set_charset("UTF-8");

	//Check if user have defined own language. If not, find it out for the player using findlocale
	string lang=getSettings()->getValue("lang");
	if(lang.length()>0){
	printf("Locale set by user to %s\n",lang.c_str());
	language=lang;
	}else{
	FL_Locale *locale;
	FL_FindLocale(&locale,FL_MESSAGES);
	printf("Locale isn't set by user: %s\n",locale->lang);

	language=locale->lang;
	if(locale->country!=NULL){
	language+=string("_")+string(locale->country);
	}
	if(locale->variant!=NULL){
	language+=string("@")+string(locale->variant);
	}

	FL_FreeLocale(&locale);
	}
	//Now set the language in the dictionaryManager.
	dictionaryManager->set_language(tinygettext::Language::from_name(language));

	//Disable annoying 'Couldn't translate: blah blah blah'
	tinygettext::Log::set_log_info_callback(NULL);

	//Create the types of blocks.
	for(int i=0;i<TYPE_MAX;i++){
	Game::blockNameMap[Game::blockName[i]]=i;
	}

	//Create the types of game object event types.
	struct GameObjectEventTypeName{
	int type;
	const char* name;
	};
	const GameObjectEventTypeName types[]={
	{GameObjectEvent_PlayerWalkOn,"playerWalkOn"},
	{GameObjectEvent_PlayerIsOn,"playerIsOn"},
	{GameObjectEvent_PlayerLeave,"playerLeave"},
	{GameObjectEvent_OnCreate,"onCreate"},
	{GameObjectEvent_OnEnterFrame,"onEnterFrame"},
	{GameObjectEvent_OnToggle,"onToggle"},
	{GameObjectEvent_OnSwitchOn,"onSwitchOn"},
	{GameObjectEvent_OnSwitchOff,"onSwitchOff"},
	{0,NULL}
	};
	for(int i=0;types[i].name;i++){
	Game::gameObjectEventNameMap[types[i].name]=types[i].type;
	Game::gameObjectEventTypeMap[types[i].type]=types[i].name;
	}

	//Register the ScriptAPI's functions in the scriptExecutor.
	registerFunctions(getScriptExecutor());

	//Nothing went wrong so we return true.
	return true;
	}

	static TTF_Font* loadFont(const char* name,int size){
	TTF_Font* tmpFont=TTF_OpenFont((getDataPath()+"font/"+name+".ttf").c_str(),size);
	if(tmpFont){
	return tmpFont;
	}else{
	return TTF_OpenFont((getDataPath()+"font/DroidSansFallback.ttf").c_str(),size);
	}
	}

	bool loadFonts(){
	//Load the fonts.
	//NOTE: This is a separate method because it will be called separately when re-initing in case of language change.

	//First close the fonts if needed.
	if(fontTitle)
	TTF_CloseFont(fontTitle);
	if(fontGUI)
	TTF_CloseFont(fontGUI);
	if(fontGUISmall)
	TTF_CloseFont(fontGUISmall);
	if(fontText)
	TTF_CloseFont(fontText);

	/// TRANSLATORS: Font used in GUI:
	/// - Use "knewave" for languages using Latin and Latin-derived alphabets
	/// - "DroidSansFallback" can be used for non-Latin writing systems
	fontTitle=loadFont(_("knewave"),55);
	fontGUI=loadFont(_("knewave"),32);
	fontGUISmall=loadFont(_("knewave"),24);
	/// TRANSLATORS: Font used for normal text:
	/// - Use "Blokletters-Viltstift" for languages using Latin and Latin-derived alphabets
	/// - "DroidSansFallback" can be used for non-Latin writing systems
	fontText=loadFont(_("Blokletters-Viltstift"),16);
	if(fontTitle==NULL \|\| fontGUI==NULL \|\| fontGUISmall==NULL \|\| fontText==NULL){
	printf("ERROR: Unable to load fonts! \n");
	return false;
	}

	//Nothing went wrong so return true.
	return true;
	}

	//Generate small arrows used for some GUI widgets.
	static void generateArrows(){
	TTF_Font* fontArrow=loadFont(_("knewave"),18);

	if(arrowLeft1){
	SDL_FreeSurface(arrowLeft1);
	SDL_FreeSurface(arrowRight1);
	SDL_FreeSurface(arrowLeft2);
	SDL_FreeSurface(arrowRight2);
	}

	arrowLeft1=TTF_RenderUTF8_Blended(fontArrow,"<",themeTextColor);
	arrowRight1=TTF_RenderUTF8_Blended(fontArrow,">",themeTextColor);
	arrowLeft2=TTF_RenderUTF8_Blended(fontArrow,"<",themeTextColorDialog);
	arrowRight2=TTF_RenderUTF8_Blended(fontArrow,">",themeTextColorDialog);

	TTF_CloseFont(fontArrow);
	}

	bool loadTheme(string name){
	//Load default fallback theme if it isn't loaded yet
	if(objThemes.themeCount()==0){
	if(objThemes.appendThemeFromFile(getDataPath()+"themes/Cloudscape/theme.mnmstheme")==NULL){
	printf("ERROR: Can't load default theme file\n");
	return false;
	}
	}

	//Resize background or load specific theme
	bool success=true;
	if(name==""\|\|name.empty()){
	objThemes.scaleToScreen();
	}else{
	string theme=processFileName(name);
	if(objThemes.appendThemeFromFile(theme+"/theme.mnmstheme")==NULL){
	printf("ERROR: Can't load theme %s\n",theme.c_str());
	success=false;
	}
	}

	generateArrows();

	//Everything went fine so return true.
	return success;
	}

	static Mix_Chunk* loadWAV(const char* s){
	Mix_Chunk* c=Mix_LoadWAV(s);
	if(c!=NULL) return c;
	printf("ERROR: Can't load sound file %s: %s\n",s,SDL_GetError());
	return NULL;
	}

	static SDL_Cursor* loadCursor(const char* image[]){
	int i,row,col;
	//The array that holds the data (0=white 1=black)
	Uint8 data[4*32];
	//The array that holds the alpha mask (0=transparent 1=visible)
	Uint8 mask[4*32];
	//The coordinates of the hotspot of the cursor.
	int hotspotX, hotspotY;

	i=-1;
	//Loop through the rows and columns.
	//NOTE: We assume a cursor size of 32x32.
	for(row=0;row<32;++row){
	for(col=0; col<32;++col){
	if(col % 8) {
	data[i]<<=1;
	mask[i]<<=1;
	}else{
	++i;
	data[i]=mask[i]=0;
	}
	switch(image[4+row][col]){
	case '+':
	data[i] \|= 0x01;
	mask[i] \|= 0x01;
	break;
	case '.':
	mask[i] \|= 0x01;
	break;
	default:
	break;
	}
	}
	}
	//Get the hotspot x and y locations from the last line of the cursor.
	sscanf(image[4+row],"%d,%d",&hotspotX,&hotspotY);
	return SDL_CreateCursor(data,mask,32,32,hotspotX,hotspotY);
	}

	bool loadFiles(){
	//Load the fonts.
	if(!loadFonts())
	return false;
	fontMono=loadFont("VeraMono",12);

	//Show a loading screen
	{
	SDL_Rect r={0,0,screen->w,screen->h};
	SDL_FillRect(screen,&r,0);

	SDL_Color fg={255,255,255};
	SDL_Surface *surface=TTF_RenderUTF8_Blended(fontTitle,_("Loading..."),fg);
	if(surface!=NULL){
	r.x=(screen->w-surface->w)/2;
	r.y=(screen->h-surface->h)/2;
	SDL_BlitSurface(surface,NULL,screen,&r);
	SDL_FreeSurface(surface);
	}

	SDL_Flip(screen);
	}

	musicManager.destroy();
	//Load the music and play it.
	if(musicManager.loadMusic((getDataPath()+"music/menu.music")).empty()){
	printf("WARNING: Unable to load background music! \n");
	}
	musicManager.playMusic("menu",false);
	//Always load the default music list for fallback.
	musicManager.loadMusicList((getDataPath()+"music/default.list"));
	//Load the configured music list.
	getMusicManager()->loadMusicList((getDataPath()+"music/"+getSettings()->getValue("musiclist")+".list"));
	getMusicManager()->setMusicList(getSettings()->getValue("musiclist"));

	//Check if music is enabled.
	if(getSettings()->getBoolValue("music"))
	getMusicManager()->setEnabled();

	//Load the sound effects
	jumpSound=loadWAV((getDataPath()+"sfx/jump.wav").c_str());
	hitSound=loadWAV((getDataPath()+"sfx/hit.wav").c_str());
	saveSound=loadWAV((getDataPath()+"sfx/checkpoint.wav").c_str());
	swapSound=loadWAV((getDataPath()+"sfx/swap.wav").c_str());
	toggleSound=loadWAV((getDataPath()+"sfx/toggle.wav").c_str());
	errorSound=loadWAV((getDataPath()+"sfx/error.wav").c_str());
	collectSound=loadWAV((getDataPath()+"sfx/collect.wav").c_str());
	achievementSound=loadWAV((getDataPath()+"sfx/achievement.ogg").c_str());

	//Load the cursor images from the Cursor.h file.
	cursors[CURSOR_POINTER]=loadCursor(pointer);
	cursors[CURSOR_CARROT]=loadCursor(ibeam);
	cursors[CURSOR_DRAG]=loadCursor(closedhand);
	cursors[CURSOR_SIZE_HOR]=loadCursor(size_hor);
	cursors[CURSOR_SIZE_VER]=loadCursor(size_ver);
	cursors[CURSOR_SIZE_FDIAG]=loadCursor(size_fdiag);
	cursors[CURSOR_SIZE_BDIAG]=loadCursor(size_bdiag);
	cursors[CURSOR_REMOVE]=loadCursor(remove_cursor);
	//Set the default cursor right now.
	SDL_SetCursor(cursors[CURSOR_POINTER]);

	levelPackManager.destroy();
	//Now sum up all the levelpacks.
	vector<string> v=enumAllDirs(getDataPath()+"levelpacks/");
	for(vector<string>::iterator i=v.begin(); i!=v.end(); ++i){
	levelPackManager.loadLevelPack(getDataPath()+"levelpacks/"+*i);
	}
	v=enumAllDirs(getUserPath(USER_DATA)+"levelpacks/");
	for(vector<string>::iterator i=v.begin(); i!=v.end(); ++i){
	levelPackManager.loadLevelPack(getUserPath(USER_DATA)+"levelpacks/"+*i);
	}
	v=enumAllDirs(getUserPath(USER_DATA)+"custom/levelpacks/");
	for(vector<string>::iterator i=v.begin(); i!=v.end(); ++i){
	levelPackManager.loadLevelPack(getUserPath(USER_DATA)+"custom/levelpacks/"+*i);
	}
	//Now we add a special levelpack that will contain the levels not in a levelpack.
	LevelPack* levelsPack=new LevelPack;
	levelsPack->levelpackName="Levels";
	LevelPack* customLevelsPack=new LevelPack;
	customLevelsPack->levelpackName="Custom Levels";

	//List the addon levels and add them one for one.
	v=enumAllFiles(getUserPath(USER_DATA)+"levels/");
	for(vector<string>::iterator i=v.begin(); i!=v.end(); ++i){
	levelsPack->addLevel(getUserPath(USER_DATA)+"levels/"+*i);
	levelsPack->setLocked(levelsPack->getLevelCount()-1);
	}
	//List the custom levels and add them one for one.
	v=enumAllFiles(getUserPath(USER_DATA)+"custom/levels/");
	for(vector<string>::iterator i=v.begin(); i!=v.end(); ++i){
	levelsPack->addLevel(getUserPath(USER_DATA)+"custom/levels/"+*i);
	levelsPack->setLocked(levelsPack->getLevelCount()-1);

	customLevelsPack->addLevel(getUserPath(USER_DATA)+"custom/levels/"+*i);
	customLevelsPack->setLocked(customLevelsPack->getLevelCount()-1);
	}

	//Add them to the manager.
	levelPackManager.addLevelPack(levelsPack);
	levelPackManager.addLevelPack(customLevelsPack);

	//Load statistics
	statsMgr.loadPicture();
	statsMgr.registerAchievements();
	statsMgr.loadFile(getUserPath(USER_CONFIG)+"statistics");

	//Do something ugly and slow
	statsMgr.reloadCompletedLevelsAndAchievements();
	statsMgr.reloadOtherAchievements();

	//Load the theme, both menu and default.
	//NOTE: Loading theme may fail and returning false would stop everything, default theme will be used instead.
	if (!loadTheme(getSettings()->getValue("theme"))){
	getSettings()->setValue("theme","%DATA%/themes/Cloudscape");
	saveSettings();
	}

	//Nothing failed so return true.
	return true;
	}

	bool loadSettings(){
	settings=new Settings(getUserPath(USER_CONFIG)+"meandmyshadow.cfg");
	settings->parseFile();

	//Now apply settings changed through command line arguments, if any.
	map<string,string>::iterator it;
	for(it=tmpSettings.begin();it!=tmpSettings.end();++it){
	settings->setValue(it->first,it->second);
	}
	tmpSettings.clear();

	//Always return true?
	return true;
	}

	bool saveSettings(){
	settings->save();

	//Always return true?
	return true;
	}

	Settings* getSettings(){
	return settings;
	}

	MusicManager* getMusicManager(){
	return &musicManager;
	}

	LevelPackManager* getLevelPackManager(){
	return &levelPackManager;
	}

	ScriptExecutor* getScriptExecutor(){
	return &scriptExecutor;
	}

	void flipScreen(){
	if(settings->getBoolValue("gl")){
	#ifdef HARDWARE_ACCELERATION
	glClear(GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();

	//Create a texture from the screen surface.
	glBindTexture(GL_TEXTURE_2D,screenTexture);

	//Set the texture's stretching properties
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);

	glTexImage2D(GL_TEXTURE_2D,0,screen->format->BytesPerPixel,screen->w,screen->h,0,GL_BGRA,GL_UNSIGNED_BYTE,screen->pixels);

	glBegin(GL_QUADS);
	glTexCoord2i(0,0); glVertex3f(0,0,0);
	glTexCoord2i(1,0); glVertex3f(SCREEN_WIDTH,0,0);
	glTexCoord2i(1,1); glVertex3f(SCREEN_WIDTH,SCREEN_HEIGHT,0);
	glTexCoord2i(0,1); glVertex3f(0,SCREEN_HEIGHT,0);
	glEnd();

	SDL_GL_SwapBuffers();
	#else
	//NOTE: Trying to flip the screen using gl while compiled without.
	cerr<<"FATAL ERROR: Unable to draw to screen using OpenGL (compiled without)."<<endl;
	#endif
	}else{
	SDL_Flip(screen);
	}
	}

	void clean(){
	//Save statistics
	statsMgr.saveFile(getUserPath(USER_CONFIG)+"statistics");

	//We delete the settings.
	if(settings){
	delete settings;
	settings=NULL;
	}

	//Get rid of the currentstate.
	//NOTE: The state is probably already deleted by the changeState function.
	if(currentState)
	delete currentState;

	//Destroy the GUI if present.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}

	//Destroy the imageManager.
	imageManager.destroy();

	//Destroy the musicManager.
	musicManager.destroy();

	//Destroy all sounds
	Mix_FreeChunk(jumpSound);
	Mix_FreeChunk(hitSound);
	Mix_FreeChunk(saveSound);
	Mix_FreeChunk(swapSound);
	Mix_FreeChunk(toggleSound);
	Mix_FreeChunk(errorSound);
	Mix_FreeChunk(collectSound);
	Mix_FreeChunk(achievementSound);

	//Destroy the cursors.
	for(int i=0;i<CURSOR_MAX;i++){
	SDL_FreeCursor(cursors[i]);
	cursors[i]=NULL;
	}

	//Destroy the levelPackManager.
	levelPackManager.destroy();
	levels=NULL;

	//Close all joysticks.
	inputMgr.closeAllJoysticks();

	//Close the fonts and quit SDL_ttf.
	TTF_CloseFont(fontTitle);
	TTF_CloseFont(fontGUI);
	TTF_CloseFont(fontGUISmall);
	TTF_CloseFont(fontText);
	TTF_CloseFont(fontMono);
	TTF_Quit();

	//Remove the temp surface.
	SDL_FreeSurface(tempSurface);

	//Stop audio.and quit
	Mix_CloseAudio();
	#ifndef __APPLE__
	Mix_Quit();
	#endif
	//And finally quit SDL.
	SDL_Quit();
	}

	void setNextState(int newstate){
	//Only change the state when we aren't already exiting.
	if(nextState!=STATE_EXIT){
	nextState=newstate;
	}
	}

	void changeState(){
	//Check if there's a nextState.
	if(nextState!=STATE_NULL){
	//Delete the currentState.
	delete currentState;
	currentState=NULL;

	//Set the currentState to the nextState.
	stateID=nextState;
	nextState=STATE_NULL;

	//Init the state.
	switch(stateID){
	case STATE_GAME:
	{
	currentState=NULL;
	Game* game=new Game();
	currentState=game;
	//Check if we should load record file or a level.
	if(!Game::recordFile.empty()){
	game->loadRecord(Game::recordFile.c_str());
	Game::recordFile.clear();
	}else{
	game->loadLevel(levels->getLevelpackPath()+levels->getLevelFile());
	levels->saveLevelProgress();
	}
	}
	break;
	case STATE_MENU:
	currentState=new Menu();
	break;
	case STATE_LEVEL_SELECT:
	currentState=new LevelPlaySelect();
	break;
	case STATE_LEVEL_EDIT_SELECT:
	currentState=new LevelEditSelect();
	break;
	case STATE_LEVEL_EDITOR:
	{
	currentState=NULL;
	LevelEditor* levelEditor=new LevelEditor();
	currentState=levelEditor;
	//Load the selected level.
	levelEditor->loadLevel(levels->getLevelpackPath()+levels->getLevelFile());
	}
	break;
	case STATE_OPTIONS:
	currentState=new Options();
	break;
	case STATE_ADDONS:
	currentState=new Addons();
	break;
	case STATE_CREDITS:
	currentState=new Credits();
	break;
	case STATE_STATISTICS:
	currentState=new StatisticsScreen();
	break;
	}
	//NOTE: STATE_EXIT isn't mentioned, meaning that currentState is null.
	//This way the game loop will break and the program will exit.

	//Fade out.
	int fade=255;
	SDL_BlitSurface(screen,NULL,tempSurface,NULL);
	while(fade>0){
	fade-=17;
	if(fade<0)
	fade=0;


	SDL_FillRect(screen,NULL,0);
	SDL_SetAlpha(tempSurface, SDL_SRCALPHA, fade);
	SDL_BlitSurface(tempSurface,NULL,screen,NULL);
	flipScreen();
	SDL_Delay(25);
	}
	}
	}

	void musicStoppedHook(){
	//We just call the musicStopped method of the MusicManager.
	musicManager.musicStopped();
	}

	bool checkCollision(const SDL_Rect& a,const SDL_Rect& b){
	//Check if the left side of box a isn't past the right side of b.
	if(a.x>=b.x+b.w){
	return false;
	}
	//Check if the right side of box a isn't left of the left side of b.
	if(a.x+a.w<=b.x){
	return false;
	}
	//Check if the top side of box a isn't under the bottom side of b.
	if(a.y>=b.y+b.h){
	return false;
	}
	//Check if the bottom side of box a isn't above the top side of b.
	if(a.y+a.h<=b.y){
	return false;
	}

	//We have collision.
	return true;
	}

	void setCamera(const SDL_Rect* r,int count){
	//SetCamera only works in the Level editor and when mouse is inside window.
	if(stateID==STATE_LEVEL_EDITOR&&(SDL_GetAppState()&SDL_APPMOUSEFOCUS)){
	//Get the mouse coordinates.
	int x,y;
	SDL_GetMouseState(&x,&y);
	SDL_Rect mouse={x,y,0,0};

	//Don't continue here if mouse is inside one of the boxes given as parameter.
	for(int i=0;i<count;i++){
	if(checkCollision(mouse,r[i]))
	return;
	}

	//Check if the mouse is near the left edge of the screen.
	//Else check if the mouse is near the right edge.
	if(x<50){
	//We're near the left edge so move the camera.
	camera.x-=5;
	}else if(x>SCREEN_WIDTH-50){
	//We're near the right edge so move the camera.
	camera.x+=5;
	}

	//Check if the mouse is near the top edge of the screen.
	//Else check if the mouse is near the bottom edge.
	if(y<50){
	//We're near the top edge so move the camera.
	camera.y-=5;
	}else if(y>SCREEN_HEIGHT-50){
	//We're near the bottom edge so move the camera.
	camera.y+=5;
	}
	}
	}

	int parseArguments(int argc, char** argv){
	//Loop through all arguments.
	//We start at one since 0 is the command itself.
	for(int i=1;i<argc;i++){
	string argument=argv[i];

	//Check if the argument is the data-dir.
	if(argument=="--data-dir"){
	//We need a second argument so we increase i.
	i++;
	if(i>=argc){
	printf("ERROR: Missing argument for command '%s'\n\n",argument.c_str());
	return -1;
	}

	//Configure the dataPath with the given path.
	dataPath=argv[i];
	if(!getDataPath().empty()){
	char c=dataPath[dataPath.size()-1];
	if(c!='/'&&c!='\\') dataPath+="/";
	}
	}else if(argument=="--user-dir"){
	//We need a second argument so we increase i.
	i++;
	if(i>=argc){
	printf("ERROR: Missing argument for command '%s'\n\n",argument.c_str());
	return -1;
	}

	//Configure the userPath with the given path.
	userPath=argv[i];
	if(!userPath.empty()){
	char c=userPath[userPath.size()-1];
	if(c!='/'&&c!='\\') userPath+="/";
	}
	}else if(argument=="-f" \|\| argument=="-fullscreen" \|\| argument=="--fullscreen"){
	tmpSettings["fullscreen"]="1";
	}else if(argument=="-w" \|\| argument=="-windowed" \|\| argument=="--windowed"){
	tmpSettings["fullscreen"]="0";
	}else if(argument=="-mv" \|\| argument=="-music" \|\| argument=="--music"){
	//We need a second argument so we increase i.
	i++;
	if(i>=argc){
	printf("ERROR: Missing argument for command '%s'\n\n",argument.c_str());
	return -1;
	}

	//Now set the music volume.
	tmpSettings["music"]=argv[i];
	}else if(argument=="-sv" \|\| argument=="-sound" \|\| argument=="--sound"){
	//We need a second argument so we increase i.
	i++;
	if(i>=argc){
	printf("ERROR: Missing argument for command '%s'\n\n",argument.c_str());
	return -1;
	}

	//Now set sound volume.
	tmpSettings["sound"]=argv[i];
	}else if(argument=="-set" \|\| argument=="--set"){
	//We need a second and a third argument so we increase i.
	i+=2;
	if(i>=argc){
	printf("ERROR: Missing argument for command '%s'\n\n",argument.c_str());
	return -1;
	}

	//And set the setting.
	tmpSettings[argv[i-1]]=argv[i];
	}else if(argument=="-v" \|\| argument=="-version" \|\| argument=="--version"){
	//Print the version.
	printf("%s\n",version.c_str());
	return 0;
	}else if(argument=="-h" \|\| argument=="-help" \|\| argument=="--help"){
	//If the help is requested we'll return false without printing an error.
	//This way the usage/help text will be printed.
	return -1;
	}else{
	//Any other argument is unknow so we return false.
	printf("ERROR: Unknown argument %s\n\n",argument.c_str());
	return -1;
	}
	}

	//If everything went well we can return true.
	return 1;
	}

	//Special structure that will recieve the GUIEventCallbacks of the messagebox.
	struct msgBoxHandler:public GUIEventCallback{
	public:
	//Integer containing the ret(urn) value of the messageBox.
	int ret;
	public:
	//Constructor.
	msgBoxHandler():ret(0){}

	void GUIEventCallback_OnEvent(std::string name,GUIObject* obj,int eventType){
	//Make sure it's a click event.
	if(eventType==GUIEventClick){
	//Set the return value.
	ret=obj->value;

	//After a click event we can delete the GUI.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}
	}
	};

	msgBoxResult msgBox(string prompt,msgBoxButtons buttons,const string& title){
	//Create the event handler.
	msgBoxHandler objHandler;
	//The GUI objects.
	GUIObject* obj;

	//Create the GUIObjectRoot, the height and y location is temp.
	//It depends on the content what it will be.
	GUIObject* root=new GUIObject((SCREEN_WIDTH-600)/2,200,600,200,GUIObjectFrame,title.c_str());

	//Integer containing the current y location used to grow dynamic depending on the content.
	int y=50;

	//Now process the prompt.
	{
	//Pointer to the string.
	char* lps=(char*)prompt.c_str();
	//Pointer to a character.
	char* lp=NULL;

	//We keep looping forever.
	//The only way out is with the break statement.
	for(;;){
	//As long as it's still the same sentence we continue.
	//It will stop when there's a newline or end of line.
	for(lp=lps;lp!='\n'&&lp!='\r'&&*lp!=0;lp++);

	//Store the character we stopped on. (End or newline)
	char c=*lp;
	//Set the character in the string to 0, making lps a string containing one sentence.
	*lp=0;

	//Add a GUIObjectLabel with the sentence.
	root->addChild(new GUIObject(0,y,root->width,25,GUIObjectLabel,lps,0,true,true,GUIGravityCenter));
	//Increase y with 25, about the height of the text.
	y+=25;

	//Check the stored character if it was a stop.
	if(c==0){
	//It was so break out of the for loop.
	lps=lp;
	break;
	}
	//It wasn't meaning more will follow.
	//We set lps to point after the "newline" forming a new string.
	lps=lp+1;
	}
	}
	//Add 70 to y to leave some space between the content and the buttons.
	y+=70;
	//Recalc the size of the message box.
	root->top=(SCREEN_HEIGHT-y)/2;
	root->height=y;

	//Now we need to add the buttons.
	//Integer containing the number of buttons to add.
	int count=0;
	//Array with the return codes for the buttons.
	int value[3]={0};
	//Array containing the captation for the buttons.
	string button[3]={"","",""};
	switch(buttons){
	case MsgBoxOKCancel:
	count=2;
	button[0]=_("OK");value[0]=MsgBoxOK;
	button[1]=_("Cancel");value[1]=MsgBoxCancel;
	break;
	case MsgBoxAbortRetryIgnore:
	count=3;
	button[0]=_("Abort");value[0]=MsgBoxAbort;
	button[1]=_("Retry");value[1]=MsgBoxRetry;
	button[2]=_("Ignore");value[2]=MsgBoxIgnore;
	break;
	case MsgBoxYesNoCancel:
	count=3;
	button[0]=_("Yes");value[0]=MsgBoxYes;
	button[1]=_("No");value[1]=MsgBoxNo;
	button[2]=_("Cancel");value[2]=MsgBoxCancel;
	break;
	case MsgBoxYesNo:
	count=2;
	button[0]=_("Yes");value[0]=MsgBoxYes;
	button[1]=_("No");value[1]=MsgBoxNo;
	break;
	case MsgBoxRetryCancel:
	count=2;
	button[0]=_("Retry");value[0]=MsgBoxRetry;
	button[1]=_("Cancel");value[1]=MsgBoxCancel;
	break;
	default:
	count=1;
	button[0]=_("OK");value[0]=MsgBoxOK;
	break;
	}

	//Now we start making the buttons.
	{
	//Reduce y so that the buttons fit inside the frame.
	y-=40;

	double places[3]={0.0};
	if(count==1){
	places[0]=0.5;
	}else if(count==2){
	places[0]=0.4;
	places[1]=0.6;
	}else if(count==3){
	places[0]=0.3;
	places[1]=0.5;
	places[2]=0.7;
	}

	//Loop to add the buttons.
	for(int i=0;i<count;i++){
	obj=new GUIObject(root->width*places[i],y,-1,36,GUIObjectButton,button[i].c_str(),value[i],true,true,GUIGravityCenter);
	obj->eventCallback=&objHandler;
	root->addChild(obj);
	}
	}

	//Now we dim the screen and keep the GUI rendering/updating.
	GUIOverlay* overlay=new GUIOverlay(root);
	overlay->enterLoop(true);

	//And return the result.
	return (msgBoxResult)objHandler.ret;
	}

	struct fileDialogHandler:public GUIEventCallback{
	public:
	//The ret(urn) value, true=ok and false=cancel
	bool ret;
	//Boolean if it's a save dialog.
	bool isSave;
	//Boolean if the file should be verified.
	bool verifyFile;
	//Boolean if files should be listed instead of directories.
	bool files;

	//Pointer to the textfield containing the filename.
	GUIObject* txtName;
	//Pointer to the listbox containing the different files.
	GUIListBox* lstFile;

	//The extension the files listed should have.
	const char* extension;
	//The current filename.
	string fileName;
	//The current search path.
	string path;

	//Vector containing the search paths.
	vector<string> searchPath;
	public:
	//Constructor.
	fileDialogHandler(bool isSave=false,bool verifyFile=false, bool files=true):ret(false),
	isSave(isSave),verifyFile(verifyFile),
	files(files),txtName(NULL),lstFile(NULL),extension(NULL){}

	void GUIEventCallback_OnEvent(std::string name,GUIObject* obj,int eventType){
	//Check for the ok event.
	if(name=="cmdOK"){
	//Get the entered fileName from the text field.
	std::string s=txtName->caption;

	//If it doesn't contain a slash we need to add the path to the fileName.
	if(s.find_first_of("/")==string::npos)
	s=path+s;

	//If the string empty we return.
	if(s.empty() \|\| s.find_first_of("*?")!=string::npos)
	return;

	//We only need to check for extensions if it isn't a folder dialog.
	if(files){
	//If there isn't right extension add it.
	size_t found=s.find_first_of(".");
	if(found!=string::npos)
	s.replace(s.begin()+found+1,s.end(),extension);
	else if (s.substr(found+1)!=extension)
	s.append(string(".")+extension);
	}

	//Check if we should save or load the file.
	//
	if(isSave){
	//Open the file with read permission to check if it already exists.
	FILE* f;
	f=fopen(processFileName(s).c_str(),"rb");

	//Check if it exists.
	if(f){
	//Close the file.
	fclose(f);

	//Let the currentState render once to prevent multiple GUI overlapping and prevent the screen from going black.
	currentState->render();

	//Prompt the user with a Yes or No question.
	/// TRANSLATORS: Filename is coming before this text
	if(msgBox(tfm::format(_("%s already exists.\nDo you want to overwrite it?"),s),MsgBoxYesNo,_("Overwrite Prompt"))!=MsgBoxYes){
	//He answered no, so we return.
	return;
	}
	}

	//Check if we should verify the file.
	//Verifying only applies to files not to directories.
	if(verifyFile && files){
	//Open the file with write permission.
	f=fopen(processFileName(s).c_str(),"wb");

	//Check if their aren't problems.
	if(f){
	//Close the file.
	fclose(f);
	}else{
	//Let the currentState render once to prevent multiple GUI overlapping and prevent the screen from going black.
	currentState->render();

	//The file can't be opened so tell the user.
	msgBox(tfm::format(_("Can't open file %s."),s),MsgBoxOKOnly,_("Error"));
	return;
	}
	}
	}else if(verifyFile && files){
	//We need to verify a file for opening.
	FILE *f;
	f=fopen(processFileName(s).c_str(),"rb");

	//Check if it didn't fail.
	if(f){
	//Succes, so close the file.
	fclose(f);
	}else{
	//Let the currentState render once to prevent multiple GUI overlapping and prevent the screen from going black.
	currentState->render();

	//Unable to open file so tell the user.
	msgBox(tfm::format(_("Can't open file %s."),s),MsgBoxOKOnly,_("Error"));
	return;
	}
	}

	//If we haven't returned then it's fine.
	//Set the fileName to the chosen file.
	fileName=s;

	//Delete the GUI.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}

	//Set return to true.
	ret=true;
	}else if(name=="cmdCancel"){
	//Cancel means we can kill the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}else if(name=="lstFile"){
	//Get a pointer to the listbox.
	GUIListBox* obj1=lstFile;

	//Make sure the option exist and change textfield to it.
	if(obj1!=NULL && txtName!=NULL && obj1->value>=0 && obj1->value<(int)obj1->item.size()){
	txtName->caption=obj1->item[obj1->value];
	}
	}else if(name=="lstSearchIn"){
	//Get the searchpath listbox.
	GUISingleLineListBox obj1=dynamic_cast<GUISingleLineListBox>(obj);

	//Check if the entry exists.
	if(obj1!=NULL && lstFile!=NULL && obj1->value>=0 && obj1->value<(int)searchPath.size()){
	//Temp string.
	string s;

	//Get the new search path.
	path=searchPath[obj1->value];

	//Make sure it isn't empty.
	if(!path.empty()){
	//Process the filename.
	s=processFileName(path);
	}else{
	//It's empty so we give the userpath.
	s=getUserPath();
	}

	//Fill the list with files or directories.
	if(files) {
	lstFile->item=enumAllFiles(s,extension);
	}else
	lstFile->item=enumAllDirs(s);

	//Remove any selection from the list.
	lstFile->value=-1;
	}
	}
	}
	};

	bool fileDialog(string& fileName,const char* title,const char* extension,const char* path,bool isSave,bool verifyFile,bool files){
	//Pointer to GUIObject to make the GUI with.
	GUIObject* obj;

	//Create the fileDialogHandler, used for event handling.
	fileDialogHandler objHandler(isSave,verifyFile,files);
	//Vector containing the pathNames.
	vector<string> pathNames;

	//Set the extension of the objHandler.
	objHandler.extension=extension;

	//We now need to splits the given path into multiple path names.
	if(path && path[0]){
	//The string isn't empty.
	//Pointer to the paths string.
	char* lp=(char*)path;
	//Pointer to the first newline.
	char* lps=strchr(lp,'\n');
	//Pointer used for checking if their's another newline.
	//It will indicate if it's the last set or not.
	char* lpe;

	//Check for a newline.
	if(lps){
	//We have newline(s) so loop forever.
	//We can only break out of the loop when the string ends.
	for(;;){
	//Add the first searchpath.
	//This is the beginning of the string (lp) to the first newline. (lps)
	objHandler.searchPath.push_back(string(lp,lps-lp));

	//We should have another newline so search for it.
	lpe=strchr(lps+1,'\n');
	if(lpe){
	//We found it so we add that to the pathname.
	pathNames.push_back(string(lps+1,lpe-lps-1));
	//And start over again by setting lp to the start of a new set of searchPath/pathName.
	lp=lpe+1;
	}else{
	//There is no newline anymore, meaning the last entry, the rest of the string must be the pathName.
	pathNames.push_back(string(lps+1));
	//And break out of the loop.
	break;
	}

	//We haven't broken out so search for a newline.
	lps=strchr(lp,'\n');
	//If there isn't a newline break.
	if(!lps)
	break;
	}
	}else{
	//There is no newline thus the whole string is the searchPath.
	objHandler.searchPath.push_back(path);
	}
	}else{
	//Empty so put an empty string as searchPath.
	objHandler.searchPath.push_back(string());
	}

	//It's time to create the GUI.
	//If there are more than one pathNames we need to add a GUISingleLineListBox.
	int base_y=pathNames.empty()?20:60;

	//Create the frame.
	GUIObject* root=new GUIObject(100,100-base_y/2,600,400+base_y,GUIObjectFrame,title?title:(isSave?_("Save File"):_("Load File")));

	//Create the search path list box if needed.
	if(!pathNames.empty()){
	root->addChild(new GUIObject(8,40,184,36,GUIObjectLabel,_("Search In")));
	GUISingleLineListBox* obj1=new GUISingleLineListBox(160,40,432,36);
	obj1->item=pathNames;
	obj1->value=0;
	obj1->name="lstSearchIn";
	obj1->eventCallback=&objHandler;
	root->addChild(obj1);
	}

	//Add the FileName label and textfield.
	root->addChild(new GUIObject(8,20+base_y,184,36,GUIObjectLabel,_("File Name")));
	{
	//Fill the textbox with the given fileName.
	string s=fileName;

	if(!isSave){
	//But only if it isn't empty.
	if(s.empty() && extension && extension[0])
	s=string("*.")+string(extension);
	}

	//Create the textbox and add it to the GUI.
	objHandler.txtName=new GUIObject(160,20+base_y,432,36,GUIObjectTextBox,s.c_str());
	root->addChild(objHandler.txtName);
	}

	//Now we add the ListBox containing the files or directories.
	{
	GUIListBox* obj1=new GUIListBox(8,60+base_y,584,292);

	//Get the searchPath.
	string s=objHandler.searchPath[0];
	//Make sure it isn't empty.
	if(!s.empty()){
	objHandler.path=s;
	s=processFileName(s);
	}else{
	s=getUserPath();
	}

	//Check if we should list files or directories.
	if(files){
	//Fill the list with files.
	obj1->item=enumAllFiles(s,extension);
	}else{
	//Fill the list with directories.
	obj1->item=enumAllDirs(s);
	}
	obj1->name="lstFile";
	obj1->eventCallback=&objHandler;
	root->addChild(obj1);
	objHandler.lstFile=obj1;
	}

	//Now create the OK and Cancel buttons.
	obj=new GUIObject(200,360+base_y,192,36,GUIObjectButton,_("OK"));
	obj->name="cmdOK";
	obj->eventCallback=&objHandler;
	root->addChild(obj);
	obj=new GUIObject(400,360+base_y,192,36,GUIObjectButton,_("Cancel"));
	obj->name="cmdCancel";
	obj->eventCallback=&objHandler;
	root->addChild(obj);

	//Create the gui overlay.
	GUIOverlay* overlay=new GUIOverlay(root);
	overlay->enterLoop();

	//Now determine what the return value is (and if there is one).
	if(objHandler.ret)
	fileName=objHandler.fileName;
	return objHandler.ret;
	}

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