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	diff --git a/src/Addons.cpp b/src/Addons.cpp
	index d6fd473..3a5bfab 100644
	--- a/src/Addons.cpp
	+++ b/src/Addons.cpp
	@@ -1,864 +1,936 @@
	/*
	* 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 "Addons.h"
	#include "GameState.h"
	#include "Functions.h"
	#include "FileManager.h"
	#include "Globals.h"
	#include "Objects.h"
	#include "GUIObject.h"
	#include "GUIOverlay.h"
	#include "GUIScrollBar.h"
	#include "GUITextArea.h"
	#include "GUIListBox.h"
	#include "POASerializer.h"
	#include "InputManager.h"
	#include <string>
	#include <sstream>
	#include <iostream>
	#include "libs/tinyformat/tinyformat.h"
	#include <SDL/SDL.h>
	#ifdef __APPLE__
	#include <SDL_ttf/SDL_ttf.h>
	#else
	#include <SDL/SDL_ttf.h>
	#endif


	using namespace std;

	Addons::Addons():selected(NULL){
	//Render the title.
	title=TTF_RenderUTF8_Blended(fontTitle,_("Addons"),themeTextColor);

	//Load placeholder addon icons and screenshot.
	addonIcon[0]=loadImage(getDataPath()+"/gfx/addon1.png");
	SDL_SetAlpha(addonIcon[0],0,0);
	addonIcon[1]=loadImage(getDataPath()+"/gfx/addon2.png");
	SDL_SetAlpha(addonIcon[1],0,0);
	addonIcon[2]=loadImage(getDataPath()+"/gfx/addon3.png");
	SDL_SetAlpha(addonIcon[2],0,0);
	screenshot=loadImage(getDataPath()+"/gfx/screenshot.png");

	//Open the addons file in the user cache path for writing (downloading) to.
	FILE* addon=fopen((getUserPath(USER_CACHE)+"addons").c_str(),"wb");

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

	//Try to get(download) the addonsList.
	if(getAddonsList(addon)==false){
	//It failed so we show the error message.
	GUIObjectRoot=new GUIObject(0,0,SCREEN_WIDTH,SCREEN_HEIGHT);

	GUIObject* obj=new GUILabel(90,96,200,32,_("Unable to initialize addon menu:"));
	obj->name="lbl";
	GUIObjectRoot->addChild(obj);

	obj=new GUILabel(120,130,200,32,error.c_str());
	obj->name="lbl";
	GUIObjectRoot->addChild(obj);

	obj=new GUIButton(90,550,200,32,_("Back"));
	obj->name="cmdBack";
	obj->eventCallback=this;
	GUIObjectRoot->addChild(obj);
	return;
	}

	//Now create the GUI.
	createGUI();
	}

	Addons::~Addons(){
	//Free the title surface.
	SDL_FreeSurface(title);

	//If the GUIObjectRoot exist delete it.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}

	void Addons::createGUI(){
	//Downloaded the addons file now we can create the GUI.
	GUIObjectRoot=new GUIObject(0,0,SCREEN_WIDTH,SCREEN_HEIGHT);

	//Create list of categories
	categoryList=new GUISingleLineListBox((SCREEN_WIDTH-360)/2,100,360,36);
	categoryList->name="lstTabs";
	//Loop through the categories and add them to the list.

	//FIXME: Hack for easy detecting which categories there are.
	{
	map<string,bool> categories;
	map<string,bool>::iterator mapIt;
	vector<Addon>::iterator it;
	for(it=addons.begin();it!=addons.end();++it)
	categories[it->type]=true;
	for(mapIt=categories.begin();mapIt!=categories.end();++mapIt)
	categoryList->addItem(mapIt->first,_(mapIt->first));
	}
	categoryList->value=0;
	categoryList->eventCallback=this;
	GUIObjectRoot->addChild(categoryList);

	//Create the list for the addons.
	//By default levels will be selected.
	list=new GUIListBox(SCREEN_WIDTH0.1,160,SCREEN_WIDTH0.8,SCREEN_HEIGHT-210);
	addonsToList(categoryList->getName());
	list->name="lstAddons";
	list->clickEvents=true;
	list->eventCallback=this;
	list->value=-1;
	GUIObjectRoot->addChild(list);
	type="levels";

	//The back button.
	GUIObject* obj=new GUIButton(20,20,-1,32,_("Back"));
	obj->name="cmdBack";
	obj->eventCallback=this;
	GUIObjectRoot->addChild(obj);
	}

	bool Addons::getAddonsList(FILE* file){
	//First we download the file.
	if(downloadFile(getSettings()->getValue("addon_url"),file)==false){
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: unable to download addons file!"<<endl;
	error=_("ERROR: unable to download addons file!");
	return false;
	}
	fclose(file);

	//Load the downloaded file.
	ifstream addonFile;
	addonFile.open((getUserPath(USER_CACHE)+"addons").c_str());

	if(!addonFile.good()) {
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: unable to load addon_list file!"<<endl;
	/// TRANSLATORS: addon_list is the name of a file and should not be translated.
	error=_("ERROR: unable to load addon_list file!");
	return false;
	}

	//Parse the addonsfile.
	TreeStorageNode obj;
	{
	POASerializer objSerializer;
	if(!objSerializer.readNode(addonFile,&obj,true)){
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: Invalid file format of addons file!"<<endl;
	error=_("ERROR: Invalid file format of addons file!");
	return false;
	}
	}

	//Check the addon version in the addons list.
	int version=0;
	if(!obj.attributes["version"].empty())
	version=atoi(obj.attributes["version"][0].c_str());
	if(version<MIN_VERSION \|\| version>MAX_VERSION){
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: Addon list version is unsupported! (received: "<<version<<" supported:"<<MIN_VERSION<<"-"<<MAX_VERSION<<")"<<endl;
	error=_("ERROR: Addon list version is unsupported!");
	return false;
	}

	//Also load the installed_addons file.
	ifstream iaddonFile;
	iaddonFile.open((getUserPath(USER_CONFIG)+"installed_addons").c_str());

	if(!iaddonFile) {
	//The installed_addons file doesn't exist, so we create it.
	ofstream iaddons;
	iaddons.open((getUserPath(USER_CONFIG)+"installed_addons").c_str());
	iaddons<<" "<<endl;
	iaddons.close();

	//Also load the installed_addons file.
	iaddonFile.open((getUserPath(USER_CONFIG)+"installed_addons").c_str());
	if(!iaddonFile) {
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: Unable to create the installed_addons file."<<endl;
	/// TRANSLATORS: installed_addons is the name of a file and should not be translated.
	error=_("ERROR: Unable to create the installed_addons file.");
	return false;
	}
	}

	//And parse the installed_addons file.
	TreeStorageNode obj1;
	{
	POASerializer objSerializer;
	if(!objSerializer.readNode(iaddonFile,&obj1,true)){
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: Invalid file format of the installed_addons!"<<endl;
	error=_("ERROR: Invalid file format of the installed_addons!");
	return false;
	}
	}


	//Fill the vector.
	fillAddonList(obj,obj1);

	//Close the files.
	iaddonFile.close();
	addonFile.close();
	return true;
	}

	void Addons::fillAddonList(TreeStorageNode &objAddons, TreeStorageNode &objInstalledAddons){
	//Loop through the blocks of the addons file.
	//These should contain the types levels, levelpacks, themes.
	for(unsigned int i=0;i<objAddons.subNodes.size();i++){
	TreeStorageNode* block=objAddons.subNodes[i];
	if(block==NULL) continue;

	//Check what kind of block it is, only category at the moment.
	if(block->name=="category" && block->value.size()>0){
	string type=block->value[0];

	//Now loop the entries(subNodes) of the block.
	for(unsigned int i=0;i<block->subNodes.size();i++){
	TreeStorageNode* entry=block->subNodes[i];
	if(entry==NULL) continue;
	if(entry->name=="entry" && entry->value.size()==1){
	//The entry is valid so create a new Addon.
	Addon addon;
	addon.icon=addon.screenshot=NULL;
	addon.type=type;
	addon.name=entry->value[0];

	if(!entry->attributes["file"].empty())
	addon.file=entry->attributes["file"][0];
	if(!entry->attributes["author"].empty())
	addon.author=entry->attributes["author"][0];
	if(!entry->attributes["description"].empty())
	addon.description=entry->attributes["description"][0];
	if(entry->attributes["icon"].size()>1){
	//There are (at least) two values, the url to the icon and its md5sum used for caching.
	addon.icon=loadCachedImage(entry->attributes["icon"][0].c_str(),entry->attributes["icon"][1].c_str());
	if(addon.icon)
	SDL_SetAlpha(addon.icon,0,0);
	}
	if(entry->attributes["screenshot"].size()>1){
	//There are (at least) two values, the url to the screenshot and its md5sum used for caching.
	addon.screenshot=loadCachedImage(entry->attributes["screenshot"][0].c_str(),entry->attributes["screenshot"][1].c_str());
	if(addon.screenshot)
	SDL_SetAlpha(addon.screenshot,0,0);
	}
	if(!entry->attributes["version"].empty())
	addon.version=atoi(entry->attributes["version"][0].c_str());
	addon.upToDate=false;
	addon.installed=false;

	//Check if the addon is already installed.
	for(unsigned int i=0;i<objInstalledAddons.subNodes.size();i++){
	TreeStorageNode* installed=objInstalledAddons.subNodes[i];
	if(installed==NULL) continue;
	if(installed->name=="entry" && installed->value.size()==3){
	if(addon.type.compare(installed->value[0])==0 && addon.name.compare(installed->value[1])==0) {
	addon.installed=true;
	addon.installedVersion=atoi(installed->value[2].c_str());
	if(addon.installedVersion>=addon.version) {
	addon.upToDate=true;
	}

	- //Also read the content vector.
	+ //Read the dependencies and content from the file.
	for(unsigned int j=0;j<installed->subNodes.size();j++){
	- if(installed->subNodes[j]->value.size()==1)
	- addon.content.push_back(pair<string,string>(installed->subNodes[j]->name,installed->subNodes[j]->value[0]));
	+ if(installed->subNodes[j]->name=="content"){
	+ TreeStorageNode* obj=installed->subNodes[j];
	+ for(unsigned int k=0;k<obj->subNodes.size();k++){
	+ if(obj->subNodes[k]->value.size()==1)
	+ addon.content.push_back(pair<string,string>(obj->subNodes[k]->name,obj->subNodes[k]->value[0]));
	+ }
	+ }else if(installed->subNodes[j]->name=="dependencies"){
	+ TreeStorageNode* obj=installed->subNodes[j];
	+ for(unsigned int k=0;k<obj->subNodes.size();k++){
	+ if(obj->subNodes[k]->value.size()==1)
	+ addon.dependencies.push_back(pair<string,string>(obj->subNodes[k]->name,obj->subNodes[k]->value[0]));
	+ }
	+ }
	}
	}
	}
	}

	//Finally put him in the list.
	addons.push_back(addon);
	}
	}
	}
	}
	}

	void Addons::addonsToList(const std::string &type){
	//Clear the list.
	list->clearItems();
	//Loop through the addons.
	for(unsigned int i=0;i<addons.size();i++) {
	//Make sure the addon is of the requested type.
	if(addons[i].type!=type)
	continue;

	Addon addon=addons[i];

	string entry=addon.name+" by "+addon.author;
	if(addon.installed){
	if(addon.upToDate){
	entry+=" *";
	}else{
	entry+=" +";
	}
	}

	SDL_Surface* surf=SDL_CreateRGBSurface(SDL_SWSURFACE,list->width,74,32,RMASK,GMASK,BMASK,AMASK);

	//Check if there's an icon for the addon.
	if(addon.icon){
	applySurface(5,5,addon.icon,surf,NULL);
	}else{
	if(type=="levels")
	applySurface(5,5,addonIcon[0],surf,NULL);
	else if(type=="levelpacks")
	applySurface(5,5,addonIcon[1],surf,NULL);
	else
	applySurface(5,5,addonIcon[2],surf,NULL);
	}

	SDL_Color black={0,0,0,0};
	SDL_Surface* nameSurf=TTF_RenderUTF8_Blended(fontGUI,addon.name.c_str(),black);
	SDL_SetAlpha(nameSurf,0,0xFF);
	applySurface(74,-1,nameSurf,surf,NULL);
	SDL_FreeSurface(nameSurf);

	/// TRANSLATORS: indicates the author of an addon.
	string authorLine = tfm::format(_("by %s"),addon.author);
	SDL_Surface* authorSurf=TTF_RenderUTF8_Blended(fontText,authorLine.c_str(),black);
	SDL_SetAlpha(authorSurf,0,0xFF);
	applySurface(74,43,authorSurf,surf,NULL);
	SDL_FreeSurface(authorSurf);

	if(addon.installed){
	if(addon.upToDate){
	SDL_Surface* infoSurf=TTF_RenderUTF8_Blended(fontText,_("Installed"),black);
	SDL_SetAlpha(infoSurf,0,0xFF);
	applySurface(surf->w-infoSurf->w-32,(surf->h-infoSurf->h)/2,infoSurf,surf,NULL);
	SDL_FreeSurface(infoSurf);
	}else{
	SDL_Surface* infoSurf=TTF_RenderUTF8_Blended(fontText,_("Updatable"),black);
	SDL_SetAlpha(infoSurf,0,0xFF);
	applySurface(surf->w-infoSurf->w-32,(surf->h-infoSurf->h)/2,infoSurf,surf,NULL);
	SDL_FreeSurface(infoSurf);
	}
	}else{
	SDL_Color grey={127,127,127};
	SDL_Surface* infoSurf=TTF_RenderUTF8_Blended(fontText,_("Not installed"),grey);
	SDL_SetAlpha(infoSurf,0,0xFF);
	applySurface(surf->w-infoSurf->w-32,(surf->h-infoSurf->h)/2,infoSurf,surf,NULL);
	SDL_FreeSurface(infoSurf);
	}

	list->addItem(entry,surf);
	}
	}

	bool Addons::saveInstalledAddons(){
	//Open the file.
	ofstream iaddons;
	iaddons.open((getUserPath(USER_CONFIG)+"installed_addons").c_str());
	if(!iaddons) return false;

	TreeStorageNode installed;

	//Loop through all the addons.
	vector<Addon>::iterator it;
	for(it=addons.begin();it!=addons.end();++it){
	//Check if the level is installed or not.
	if(it->installed) {
	TreeStorageNode *entry=new TreeStorageNode;
	entry->name="entry";
	entry->value.push_back(it->type);
	entry->value.push_back(it->name);
	char version[64];
	sprintf(version,"%d",it->installedVersion);
	entry->value.push_back(version);

	//Now add a subNode for each content.
	+ TreeStorageNode* content=new TreeStorageNode;
	+ content->name="content";
	for(unsigned int i=0;i<it->content.size();i++){
	- TreeStorageNode* content=new TreeStorageNode;
	- content->name=it->content[i].first;
	- content->value.push_back(it->content[i].second);
	+ TreeStorageNode* contentEntry=new TreeStorageNode;
	+ contentEntry->name=it->content[i].first;
	+ contentEntry->value.push_back(it->content[i].second);

	//Add the content node to the entry node.
	- entry->subNodes.push_back(content);
	+ content->subNodes.push_back(contentEntry);
	}
	-
	+ entry->subNodes.push_back(content);
	+
	+ //Now add a sub node for the dependencies.
	+ TreeStorageNode* deps=new TreeStorageNode;
	+ deps->name="dependencies";
	+ for(unsigned int i=0;i<it->dependencies.size();i++){
	+ TreeStorageNode* depsEntry=new TreeStorageNode;
	+ depsEntry->name=it->dependencies[i].first;
	+ depsEntry->value.push_back(it->dependencies[i].second);
	+
	+ //Add the content node to the entry node.
	+ deps->subNodes.push_back(depsEntry);
	+ }
	+ entry->subNodes.push_back(deps);
	+
	+ //And add the entry to the top node.
	installed.subNodes.push_back(entry);
	}
	}

	//And write away the file.
	POASerializer objSerializer;
	objSerializer.writeNode(&installed,iaddons,true,true);

	return true;
	}

	SDL_Surface* Addons::loadCachedImage(const char* url,const char* md5sum){
	//Check if the image is cached.
	string imageFile=getUserPath(USER_CACHE)+"images/"+md5sum;
	if(fileExists(imageFile.c_str())){
	//It is, so load the image.
	return loadImage(imageFile);
	}else{
	//Download the image.
	FILE* file=fopen(imageFile.c_str(),"wb");

	//Downloading failed.
	if(!downloadFile(url,file)){
	cerr<<"ERROR: Unable to download image from "<<url<<endl;
	fclose(file);
	return NULL;
	}
	fclose(file);

	//Load the image.
	return loadImage(imageFile);
	}
	}

	void Addons::handleEvents(){
	//Check if we should quit.
	if(event.type==SDL_QUIT){
	//Save the installed addons before exiting.
	saveInstalledAddons();
	setNextState(STATE_EXIT);
	}

	//Check if escape is pressed, if so return to the main menu.
	if(inputMgr.isKeyUpEvent(INPUTMGR_ESCAPE)){
	setNextState(STATE_MENU);
	}
	}

	void Addons::logic(){}

	void Addons::render(){
	//Draw background.
	objThemes.getBackground(true)->draw(screen);

	//Draw the title.
	applySurface((SCREEN_WIDTH-title->w)/2,40-TITLE_FONT_RAISE,title,screen,NULL);
	}

	void Addons::resize(){
	//Delete the gui (if any).
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}

	//Now create a new one.
	createGUI();
	}

	void Addons::showAddon(){
	//Make sure an addon is selected.
	if(!selected)
	return;

	//Create a root object.
	GUIObject* root=new GUIFrame((SCREEN_WIDTH-600)/2,(SCREEN_HEIGHT-400)/2,600,400,selected->name.c_str());

	//Create the 'by creator' label.
	GUIObject* obj=new GUILabel(0,50,600,50,tfm::format(_("by %s"),selected->author).c_str(),0,true,true,GUIGravityCenter);
	root->addChild(obj);

	//Create the description text.
	GUITextArea* description=new GUITextArea(10,100,370,200);
	description->setString(selected->description.c_str());
	description->editable=false;
	description->resize();
	root->addChild(description);

	//Create the screenshot image.
	GUIImage* img=new GUIImage(390,100,200,150);
	img->setImage(selected->screenshot?selected->screenshot:screenshot);
	root->addChild(img);

	//Add buttons depending on the installed/update status.
	if(selected->installed && !selected->upToDate){
	GUIObject* bRemove=new GUIButton(root->width*0.97,350,-1,32,_("Remove"),0,true,true,GUIGravityRight);
	bRemove->name="cmdRemove";
	bRemove->eventCallback=this;
	root->addChild(bRemove);
	//Create a back button.
	GUIObject* bBack=new GUIButton(root->width*0.03,350,-1,32,_("Back"),0,true,true,GUIGravityLeft);
	bBack->name="cmdCloseOverlay";
	bBack->eventCallback=this;
	root->addChild(bBack);

	//Update widget sizes.
	root->render(0,0,false);

	//Create a nicely centered button.
	obj=new GUIButton((int)floor((bBack->left+bBack->width+bRemove->left-bRemove->width)*0.5),350,-1,32,_("Update"),0,true,true,GUIGravityCenter);
	obj->name="cmdUpdate";
	obj->eventCallback=this;
	root->addChild(obj);
	}else{
	if(!selected->installed){
	obj=new GUIButton(root->width*0.9,350,-1,32,_("Install"),0,true,true,GUIGravityRight);
	obj->name="cmdInstall";
	obj->eventCallback=this;
	root->addChild(obj);
	}else if(selected->upToDate){
	obj=new GUIButton(root->width*0.9,350,-1,32,_("Remove"),0,true,true,GUIGravityRight);
	obj->name="cmdRemove";
	obj->eventCallback=this;
	root->addChild(obj);
	}
	//Create a back button.
	obj=new GUIButton(root->width*0.1,350,-1,32,_("Back"),0,true,true,GUIGravityLeft);
	obj->name="cmdCloseOverlay";
	obj->eventCallback=this;
	root->addChild(obj);
	}

	new GUIOverlay(root);
	}

	void Addons::GUIEventCallback_OnEvent(std::string name,GUIObject* obj,int eventType){
	if(name=="lstTabs"){
	//Get the category type.
	type=categoryList->getName();
	//Get the list corresponding with the category and select the first entry.
	addonsToList(type);
	list->value=0;
	//Call an event as if an entry in the addons listbox was clicked.
	GUIEventCallback_OnEvent("lstAddons",list,GUIEventChange);
	}else if(name=="lstAddons"){
	//Check which type of event.
	if(eventType==GUIEventChange){
	//Get the addon struct that belongs to it.
	Addon* addon=NULL;

	//Make sure the addon list on screen isn't empty.
	if(!list->item.empty()){
	//Get the name of the (newly) selected entry.
	string entry=list->getItem(list->value);

	//Loop through the addons of the selected category.
	for(unsigned int i=0;i<addons.size();i++){
	//Make sure the addons are of the same type.
	if(addons[i].type!=categoryList->getName())
	continue;

	string prefix=addons[i].name;
	if(!entry.compare(0,prefix.size(),prefix)){
	addon=&addons[i];
	}
	}
	}

	//Set the new addon as selected and unselect the list.
	selected=addon;
	list->value=-1;
	}else if(eventType==GUIEventClick){
	//Make sure an addon is selected.
	if(selected){
	showAddon();
	}
	}
	}else if(name=="cmdBack"){
	saveInstalledAddons();
	setNextState(STATE_MENU);
	}else if(name=="cmdCloseOverlay"){
	//We can safely delete the GUIObjectRoot, since it's handled by the GUIOverlay.
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}else if(name=="cmdUpdate"){
	//NOTE: This simply removes the addon and reinstalls it.
	//The complete addon is downloaded either way so no need for checking what has been changed/added/removed/etc...
	if(selected){
	removeAddon(selected);
	installAddon(selected);
	}
	addonsToList(categoryList->getName());
	}else if(name=="cmdInstall"){
	if(selected)
	installAddon(selected);
	addonsToList(categoryList->getName());
	}else if(name=="cmdRemove"){
	//TODO: Check for dependencies.
	+ //Loop through the addons to check if this addon is a dependency of another addon.
	+ vector<Addon>::iterator it;
	+ for(it=addons.begin();it!=addons.end();++it){
	+ //Check if the addon has dependencies.
	+ if(!it->dependencies.empty()){
	+ vector<pair<string,string> >::iterator depIt;
	+ for(depIt=it->dependencies.begin();depIt!=it->dependencies.end();++depIt){
	+ if(depIt->first=="addon" && depIt->second==selected->name){
	+ msgBox("This addon can't be removed because it's needed by "+it->name,MsgBoxOKOnly,"Dependency");
	+ return;
	+ }
	+ }
	+ }
	+ }
	+
	if(selected)
	removeAddon(selected);
	addonsToList(categoryList->getName());
	}

	//NOTE: In case of install/remove/update we can delete the GUIObjectRoot, since it's managed by the GUIOverlay.
	if(name=="cmdUpdate" \|\| name=="cmdInstall" \|\| name=="cmdRemove"){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}

	void Addons::removeAddon(Addon* addon){
	//To remove an addon we loop over the content vector in the structure.
	//NOTE: This should contain all INSTALLED content, if something failed during installation it isn't added.
	for(unsigned int i=0;i<addon->content.size();i++){
	//Check the type of content.
	if(addon->content[i].first=="file"){
	string file=getUserPath(USER_DATA)+addon->content[i].second;
	//Check if the file exists.
	if(!fileExists(file.c_str())){
	cerr<<"WARNING: File '"<<file<<"' appears to have been removed already."<<endl;
	msgBox("WARNING: File '"+file+"' appears to have been removed already.",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Remove the file.
	if(!removeFile(file.c_str())){
	cerr<<"ERROR: Unable to remove file '"<<file<<"'!"<<endl;
	msgBox("ERROR: Unable to remove file '"+file+"'!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	}else if(addon->content[i].first=="folder"){
	string dir=getUserPath(USER_DATA)+addon->content[i].second;
	//Check if the directory exists.
	if(!dirExists(dir.c_str())){
	cerr<<"WARNING: Directory '"<<dir<<"' appears to have been removed already."<<endl;
	msgBox("WARNING: Directory '"+dir+"' appears to have been removed already.",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Remove the directory.
	if(!removeDirectory(dir.c_str())){
	cerr<<"ERROR: Unable to remove directory '"<<dir<<"'!"<<endl;
	msgBox("ERROR: Unable to remove directory '"+dir+"'!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	}else if(addon->content[i].first=="level"){
	string file=getUserPath(USER_DATA)+"levels/"+addon->content[i].second;

	//Check if the level file exists.
	if(!fileExists(file.c_str())){
	cerr<<"WARNING: Level '"<<file<<"' appears to have been removed already."<<endl;
	msgBox("WARNING: Level '"+file+"' appears to have been removed already.",MsgBoxOKOnly,"Addon error");
	continue;
	}
	//Remove the level file.
	if(!removeFile(file.c_str())){
	cerr<<"ERROR: Unable to remove level '"<<file<<"'!"<<endl;
	msgBox("ERROR: Unable to remove level '"+file+"'!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	//Also remove the level from the Levels levelpack.
	LevelPack* levelsPack=getLevelPackManager()->getLevelPack("Levels/");

	for(int i=0;i<levelsPack->getLevelCount();i++){
	if(levelsPack->getLevelFile(i)==file){
	//Remove the level and break out of the loop.
	levelsPack->removeLevel(i);
	break;
	}
	}
	}else if(addon->content[i].first=="levelpack"){
	//FIXME: We assume no trailing slash since there mustn't be one for installing, bad :(
	string dir=getUserPath(USER_DATA)+"levelpacks/"+addon->content[i].second+"/";
	//Check if the directory exists.
	if(!dirExists(dir.c_str())){
	cerr<<"WARNING: Levelpack directory '"<<dir<<"' appears to have been removed already."<<endl;
	msgBox("WARNING: Levelpack directory '"+dir+"' appears to have been removed already.",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Remove the directory.
	if(!removeDirectory(dir.c_str())){
	cerr<<"ERROR: Unable to remove levelpack directory '"<<dir<<"'!"<<endl;
	msgBox("ERROR: Unable to remove levelpack directory '"+dir+"'!",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Also remove the levelpack from the levelpackManager.
	getLevelPackManager()->removeLevelPack(dir);
	}
	}

	//Now that the content has been removed clear the content list itself.
	addon->content.clear();
	//And finally set the addon to not installed.
	addon->installed=false;
	addon->installedVersion=0;
	+
	+ //Also clear the 'offline' information.
	+ addon->content.clear();
	+ addon->dependencies.clear();
	}

	void Addons::installAddon(Addon* addon){
	string tmpDir=getUserPath(USER_CACHE)+"tmp/";
	string fileName=fileNameFromPath(addon->file,true);

	//Download the selected addon to the tmp folder.
	if(!downloadFile(addon->file,tmpDir)){
	cerr<<"ERROR: Unable to download addon file "<<addon->file<<endl;
	msgBox("ERROR: Unable to download addon file "+addon->file,MsgBoxOKOnly,"Addon error");
	return;
	}

	//Now extract the addon.
	if(!extractFile(tmpDir+fileName,tmpDir+"/addon/")){
	cerr<<"ERROR: Unable to extract addon file "<<addon->file<<endl;
	msgBox("ERROR: Unable to extract addon file "+addon->file,MsgBoxOKOnly,"Addon error");
	return;
	}

	ifstream metadata((tmpDir+"/addon/metadata").c_str());
	if(!metadata){
	cerr<<"ERROR: Addon is missing metadata!"<<endl;
	msgBox("ERROR: Addon is missing metadata!",MsgBoxOKOnly,"Addon error");
	return;
	}

	//Read the metadata from the addon.
	TreeStorageNode obj;
	{
	POASerializer objSerializer;
	if(!objSerializer.readNode(metadata,&obj,true)){
	//NOTE: We keep the console output English so we put the string literal here twice.
	cerr<<"ERROR: Invalid file format for metadata file!"<<endl;
	msgBox("ERROR: Invalid file format for metadata file!",MsgBoxOKOnly,"Addon error");
	return;
	}
	}

	//Loop through the subNodes.
	for(unsigned int i=0;i<obj.subNodes.size();i++){
	//Check for the content subNode (there should only be one).
	if(obj.subNodes[i]->name=="content"){
	TreeStorageNode* obj1=obj.subNodes[i];

	//Loop through the subNodes of that.
	for(unsigned int j=0;j<obj1->subNodes.size();j++){
	TreeStorageNode* obj2=obj1->subNodes[j];

	//This code happens for all types of content.
	string source=tmpDir+"addon/content/";
	if(obj2->value.size()>0)
	source+=obj2->value[0];
	//The destination MUST be in the user data path.
	string dest=getUserPath(USER_DATA);
	if(obj2->value.size()>1)
	dest+=obj2->value[1];

	//Check what the content type is.
	if(obj2->name=="file" && obj2->value.size()==2){
	//Now copy the file.
	if(fileExists(dest.c_str())){
	cerr<<"WARNING: File '"<<dest<<"' already exists, addon may be broken or not working!"<<endl;
	msgBox("WARNING: File '"+dest+"' already exists, addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	if(!copyFile(source.c_str(),dest.c_str())){
	cerr<<"WARNING: Unable to copy file '"<<source<<"' to '"<<dest<<"', addon may be broken or not working!"<<endl;
	msgBox("WARNING: Unable to copy file '"+source+"' to '"+dest+"', addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Add it to the content vector.
	addon->content.push_back(pair<string,string>("file",obj2->value[1]));
	}else if(obj2->name=="folder" && obj2->value.size()==2){
	//The dest must NOT exist, otherwise it will fail.
	if(dirExists(dest.c_str())){
	cerr<<"WARNING: Destination directory '"<<dest<<"' already exists, addon may be broken or not working!"<<endl;
	msgBox("WARNING: Destination directory '"+dest+"' already exists, addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	//FIXME: Copy the directory instead of renaming it, in case the same folder/parts of the folder are needed in different places.
	if(!renameDirectory(source.c_str(),dest.c_str())){
	cerr<<"WARNING: Unable to move directory '"<<source<<"' to '"<<dest<<"', addon may be broken or not working!"<<endl;
	msgBox("WARNING: Unable to move directory '"+source+"' to '"+dest+"', addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//Add it to the content vector.
	addon->content.push_back(pair<string,string>("folder",obj2->value[1]));
	}else if(obj2->name=="level" && obj2->value.size()==1){
	//The destination MUST be in the levels folder in the user data path.
	dest+="levels/"+fileNameFromPath(source);

	//Now copy the file.
	if(fileExists(dest.c_str())){
	cerr<<"WARNING: Level '"<<dest<<"' already exists, addon may be broken or not working!"<<endl;
	msgBox("WARNING: Level '"+dest+"' already exists, addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	if(!copyFile(source.c_str(),dest.c_str())){
	cerr<<"WARNING: Unable to copy level '"<<source<<"' to '"<<dest<<"', addon may be broken or not working!"<<endl;
	msgBox("WARNING: Unable to copy level '"+source+"' to '"+dest+"', addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//It's a level so add it to the Levels levelpack.
	LevelPack* levelsPack=getLevelPackManager()->getLevelPack("Levels/");
	if(levelsPack){
	levelsPack->addLevel(dest);
	levelsPack->setLocked(levelsPack->getLevelCount()-1);
	}else{
	cerr<<"ERROR: Unable to add level to Levels levelpack"<<endl;
	}
	addon->content.push_back(pair<string,string>("level",fileNameFromPath(source)));
	}else if(obj2->name=="levelpack" && obj2->value.size()==1){
	//TODO: Check if the source contains a trailing slash.

	//The destination MUST be in the user data path.
	dest+="levelpacks/"+fileNameFromPath(source);

	//The dest must NOT exist, otherwise it will fail.
	if(dirExists(dest.c_str())){
	cerr<<"WARNING: Levelpack directory '"<<dest<<"' already exists, addon may be broken or not working!"<<endl;
	msgBox("WARNING: Levelpack directory '"+dest+"' already exists, addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}
	//FIXME: Copy the directory instead of renaming it, in case the same folder/parts of the folder are needed in different places.
	if(!renameDirectory(source.c_str(),dest.c_str())){
	cerr<<"WARNING: Unable to move directory '"<<source<<"' to '"<<dest<<"', addon may be broken or not working!"<<endl;
	msgBox("WARNING: Unable to move directory '"+source+"' to '"+dest+"', addon may be broken or not working!",MsgBoxOKOnly,"Addon error");
	continue;
	}

	//It's a levelpack so add it to the levelpack manager.
	getLevelPackManager()->loadLevelPack(dest);
	addon->content.push_back(pair<string,string>("levelpack",fileNameFromPath(source)));
	}
	}
	}else if(obj.subNodes[i]->name=="dependencies"){
	TreeStorageNode* obj1=obj.subNodes[i];

	//Loop through the subNodes of that.
	for(unsigned int j=0;j<obj1->subNodes.size();j++){
	TreeStorageNode* obj2=obj1->subNodes[j];

	- if(obj2->name=="addon"){
	- //TODO: Dependencies
	+ if(obj2->name=="addon" && obj2->value.size()>0){
	+ Addon* dep=NULL;
	+
	+ //Check if the requested addon can be found.
	+ vector<Addon>::iterator it;
	+ for(it=addons.begin();it!=addons.end();++it){
	+ if(it->name==obj2->value[0]){
	+ dep=&(*it);
	+ break;
	+ }
	+ }
	+
	+ if(!dep){
	+ cerr<<"ERROR: Addon requires another addon ("<<obj2->value[0]<<") which can't be found!"<<endl;
	+ msgBox("ERROR: Addon requires another addon ("+obj2->value[0]+") which can't be found!",MsgBoxOKOnly,"Addon error");
	+ continue;
	+ }
	+
	+ //The addon has been found, try to install it.
	+ //FIXME: Somehow prevent recursion, maybe max depth (??)
	+ if(!dep->installed){
	+ msgBox("The addon "+dep->name+" is needed and will be installed now.",MsgBoxOKOnly,"Dependency");
	+ installAddon(dep);
	+ }
	+
	+ //Add the dependency to the addon.
	+ addon->dependencies.push_back(pair<string,string>("addon",dep->name));
	}
	}
	}
	}

	//The addon is installed and up to date, but not necessarily flawless.
	addon->installed=true;
	addon->upToDate=true;
	addon->installedVersion=addon->version;
	}
	diff --git a/src/Addons.h b/src/Addons.h
	index bc8e193..d232592 100644
	--- a/src/Addons.h
	+++ b/src/Addons.h
	@@ -1,161 +1,164 @@
	/*
	* 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/>.
	*/

	#ifndef ADDONS_H
	#define ADDONS_H

	#include "GameState.h"
	#include "GameObjects.h"
	#include "GUIObject.h"
	#include "GUIListBox.h"
	#include <vector>
	#include <string>
	#ifdef __APPLE__
	#include <SDL_mixer/SDL_mixer.h>
	#include <SDL_ttf/SDL_ttf.h>
	#else
	#include <SDL/SDL_mixer.h>
	#include <SDL/SDL_ttf.h>
	#endif

	//The addons menu.
	class Addons: public GameState,public GUIEventCallback{
	private:
	//The minimum addon version that is supported.
	static const int MIN_VERSION=2;
	//The maximum addon version that is supported.
	static const int MAX_VERSION=2;

	//An addon entry.
	struct Addon{
	//The name of the addon.
	string name;
	//The type of addon. (Level, Levelpack, Theme)
	string type;
	//The link to the addon file.
	string file;
	//The name of the author.
	string author;

	//The description of the addon.
	string description;

	//Icon for the addon.
	SDL_Surface* icon;
	//Screenshot for the addon.
	SDL_Surface* screenshot;

	//The latest version of the addon.
	int version;
	//The version that the user has installed, if installed.
	int installedVersion;

	//Boolean if the addon is installed.
	bool installed;
	//Boolean if the addon is upToDate. (installedVersion==version)
	bool upToDate;

	//Map that contains the content of the addon.
	//NOTE: This is only filled if the addon is installed.
	std::vector<std::pair<std::string,std::string> > content;
	+ //Array that holds the name of the addons it's dependent on.
	+ //NOTE: This is only filled if the addon is installed.
	+ std::vector<std::pair<std::string,std::string> > dependencies;
	};

	//The title.
	SDL_Surface* title;

	//Placeholder icons for addons in case they don't provide custom icons.
	SDL_Surface* addonIcon[3];

	//Placeholder screenshot for addons in case they don't provide one.
	SDL_Surface* screenshot;

	//Map containing a vector of Addons for each addon category.
	std::vector<Addon> addons;

	//File pointing to the addon file in the userpath.
	FILE* addon;

	//String that should contain the error when something fails.
	string error;

	//The type of addon that is currently selected.
	string type;
	//Pointer to the addon that is selected.
	Addon* selected;

	//The list used for the selecting of the category.
	GUISingleLineListBox* categoryList;
	//The list used for listing the addons.
	GUIListBox* list;
	public:
	//Constructor.
	Addons();
	//Destructor.
	~Addons();

	//Method that will create the GUI.
	void createGUI();

	//Method that loads that downloads the addons list.
	//file: Pointer to the file to download the list to.
	//Returns: True if the file is downloaded successfuly.
	bool getAddonsList(FILE* file);
	//
	void fillAddonList(TreeStorageNode &objAddons,TreeStorageNode &objInstalledAddons);
	//Put all the addons of a given type in a vector.
	//type: The type the addons must be.
	//Returns: Vector containing the addons.
	void addonsToList(const string &type);

	//Method that will save the installed addons to the installed_addons file.
	//Returns: True if the file is saved successfuly.
	bool saveInstalledAddons();

	//Method for loading a cached image and downloading if it isn't cached.
	//url: The url to the image.
	//md5sum: The md5sum used for caching.
	//Returns: Pointer to the SDL_Surface.
	SDL_Surface* loadCachedImage(const char* url,const char* md5sum);

	//Method that will open a GUIOverlay with the an overview of the selected addon.
	void showAddon();

	//Inherited from GameState.
	void handleEvents();
	void logic();
	void render();
	void resize();

	//Method used for GUI event handling.
	//name: The name of the callback.
	//obj: Pointer to the GUIObject that caused the event.
	//eventType: The type of event: click, change, etc..
	void GUIEventCallback_OnEvent(std::string name,GUIObject* obj,int eventType);

	//This method will remove the addon based on the content vector.
	//NOTE It doesn't check if the addon is installed or not.
	//addon: The addon to remove.
	void removeAddon(Addon* addon);
	//This method will install the addon by downloading,extracting and reading.
	//NOTE It doesn't check if the addon is installed or not.
	//addon: The addon to install.
	void installAddon(Addon* addon);

	};
	#endif
	diff --git a/src/FileManager.cpp b/src/FileManager.cpp
	index 639b5a4..33bf7fc 100644
	--- a/src/FileManager.cpp
	+++ b/src/FileManager.cpp
	@@ -1,826 +1,827 @@
	/*
	* 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 <iostream>
	#include <string>
	#include <vector>
	#include "Globals.h"
	#include "FileManager.h"
	#include "Functions.h"
	#ifdef __APPLE__
	#include "archive.h"
	#include "archive_entry.h"
	#else
	#include <archive.h>
	#include <archive_entry.h>
	#endif
	using namespace std;

	#ifdef WIN32
	#include <windows.h>
	#include <shlobj.h>
	#include <shlwapi.h>
	#include <direct.h>
	#pragma comment(lib,"shlwapi.lib")
	#else
	#include <strings.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <unistd.h>
	#include <dirent.h>
	#endif

	//Under Windows there's just one userpath.
	#ifdef WIN32
	string userPath,dataPath,appPath,exeName;
	#else
	//But on other platforms we make a difference between the userPath (config files) and the userDataPath (data files).
	//Finally there's the path for cache data userCachePath.
	string userPath,userDataPath,userCachePath,dataPath,appPath,exeName;
	#endif

	bool configurePaths() {
	//Get the appPath and the exeName.
	{
	char s[4096];
	int i,m;
	#ifdef WIN32
	m=GetModuleFileNameA(NULL,s,sizeof(s));
	#elif defined(ANDROID)
	//FIXME: Oops. There are no any executable files in Android.
	strcpy(s,"./meandmyshadow");
	m=strlen(s);
	#else
	m=readlink("/proc/self/exe",s,sizeof(s));
	#endif
	s[m]=0;
	for(i=m-1;i>=0;i--){
	if(s[i]=='/'\|\|s[i]=='\\'){
	s[i]=0;
	break;
	}
	}
	appPath=s;
	exeName=s+i+1;
	}

	//TODO: Check if the userpath is empty before setting userPath???
	//Check if the userPath is empty.
	if(getUserPath().empty()){
	#ifdef WIN32
	//Get the userPath.
	char s[1024];
	SHGetSpecialFolderPathA(NULL,s,CSIDL_PERSONAL,1);
	userPath=s;
	userPath+="\\My Games\\meandmyshadow\\";
	#elif defined(ANDROID)
	//FIXME: These paths are relative to SDL Android data path.
	userPath="./";
	userDataPath="./";
	userCachePath="./";
	#else
	//Temp variable that is used to prevent NULL assignement.
	char* env;

	//First get the $XDG_CONFIG_HOME env var.
	env=getenv("XDG_CONFIG_HOME");
	//If it's null set userPath to $HOME/.config/.
	if(env!=NULL){
	userPath=env;
	}else{
	userPath=getenv("HOME");
	userPath+="/.config";
	}
	//And add meandmyshadow to it.
	userPath+="/meandmyshadow/";

	//Now get the $XDG_DATA_HOME env var.
	env=getenv("XDG_DATA_HOME");
	//If it's null set userDataPath to $HOME/.local/share.

	if(env!=NULL){
	userDataPath=env;
	}else{
	userDataPath=getenv("HOME");
	userDataPath+="/.local/share";
	}
	//And add meandmyshadow to it.
	userDataPath+="/meandmyshadow/";

	//Now get the $XDG_CACHE_HOME env var.
	env=getenv("XDG_CACHE_HOME");
	//If it's null set userCachePath to $HOME/.cache.
	if(env!=NULL){
	userCachePath=env;
	}else{
	userCachePath=getenv("HOME");
	userCachePath+="/.cache";
	}
	//And add meandmyshadow to it.
	userCachePath+="/meandmyshadow/";

	//Set env null.
	env=NULL;
	#endif

	//Print the userPath.
	cout<<"User preferences will be fetched from: "<<userPath<<endl;
	#ifndef WIN32
	//In case of a non-Windows computer show the user data path.
	cout<<"User data will be fetched from: "<<userDataPath<<endl;
	#endif
	}

	#ifdef WIN32
	//Create the userPath folder and other subfolders.
	createDirectory(userPath.c_str());
	createDirectory((userPath+"levels").c_str());
	createDirectory((userPath+"levelpacks").c_str());
	createDirectory((userPath+"themes").c_str());
	createDirectory((userPath+"music").c_str());
	//The progress folder and subfolders.
	createDirectory((userPath+"progress").c_str());
	createDirectory((userPath+"progress\\main").c_str());
	createDirectory((userPath+"progress\\addon").c_str());
	createDirectory((userPath+"progress\\custom").c_str());
	createDirectory((userPath+"tmp").c_str());
	createDirectory((userPath+"images").c_str());
	//The records folder for recordings.
	createDirectory((userPath+"records").c_str());
	createDirectory((userPath+"records\\autosave").c_str());
	//And the custom folder inside the userpath.
	createDirectory((userPath+"custom").c_str());
	createDirectory((userPath+"custom\\levels").c_str());
	createDirectory((userPath+"custom\\levelpacks").c_str());
	#else
	//Create the userPath.
	createDirectory(userPath.c_str());
	createDirectory(userDataPath.c_str());
	createDirectory(userCachePath.c_str());
	//Also create other folders in the userpath.
	createDirectory((userDataPath+"/levels").c_str());
	createDirectory((userDataPath+"/levelpacks").c_str());
	createDirectory((userDataPath+"/themes").c_str());
	createDirectory((userDataPath+"/music").c_str());
	//The progress folder and subfolders.
	createDirectory((userDataPath+"/progress").c_str());
	createDirectory((userDataPath+"/progress/main").c_str());
	createDirectory((userDataPath+"/progress/addon").c_str());
	createDirectory((userDataPath+"/progress/custom").c_str());
	createDirectory((userCachePath+"/tmp").c_str());
	createDirectory((userCachePath+"/images").c_str());
	//The records folder for recordings.
	createDirectory((userDataPath+"/records").c_str());
	createDirectory((userDataPath+"/records/autosave").c_str());
	//And the custom folder inside the userpath.
	createDirectory((userDataPath+"/custom").c_str());
	createDirectory((userDataPath+"/custom/levels").c_str());
	createDirectory((userDataPath+"/custom/levelpacks").c_str());
	#endif

	//Get the dataPath by trying multiple relative locations.
	{
	FILE *f;
	string s;
	while(true){
	//try existing one
	if(!dataPath.empty()){
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	}
	//try "./"
	dataPath="./data/";
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	//try "../"
	dataPath="../data/";
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	//try App.Path
	dataPath=getAppPath()+"/data/";
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	//try App.Path+"/../"
	dataPath=getAppPath()+"/../data/";
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	//try DATA_PATH
	#ifdef DATA_PATH
	dataPath=DATA_PATH;
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}
	#endif
	#ifdef __APPLE__
	extern std::string get_data_path();
	dataPath = get_data_path();
	dataPath=get_data_path();
	s=dataPath+"font/knewave.ttf";
	if((f=fopen(s.c_str(),"rb"))!=NULL){
	fclose(f);
	break;
	}

	#endif
	//error: can't find file
	return false;
	}
	//Print the dataPath.
	cout<<"Data files will be fetched from: "<<dataPath<<endl;
	}
	return true;
	}

	std::vector<std::string> enumAllFiles(std::string path,const char* extension,bool containsPath){
	vector<string> v;
	#ifdef WIN32
	string s1;
	WIN32_FIND_DATAA f;
	if(!path.empty()){
	char c=path[path.size()-1];
	if(c!='/'&&c!='\\') path+="\\";
	}
	s1=path;
	if(extension!=NULL && *extension){
	s1+="*.";
	s1+=extension;
	}else{
	s1+="*";
	}
	HANDLE h=FindFirstFileA(s1.c_str(),&f);
	if(h==NULL\|\|h==INVALID_HANDLE_VALUE) return v;
	do{
	if(!(f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)){
	if(containsPath){
	v.push_back(path+f.cFileName);
	}else{
	v.push_back(f.cFileName);
	}
	}
	}while(FindNextFileA(h,&f));
	FindClose(h);
	return v;
	#else
	int len=0;
	if(extension!=NULL && *extension) len=strlen(extension);
	if(!path.empty()){
	char c=path[path.size()-1];
	if(c!='/'&&c!='\\') path+="/";
	}
	DIR *pDir;
	struct dirent *pDirent;
	pDir=opendir(path.c_str());
	if(pDir==NULL) return v;
	while((pDirent=readdir(pDir))!=NULL){
	if(pDirent->d_name[0]=='.'){
	if(pDirent->d_name[1]==0\|\|
	(pDirent->d_name[1]=='.'&&pDirent->d_name[2]==0)) continue;
	}
	string s1=path+pDirent->d_name;
	struct stat S_stat;
	lstat(s1.c_str(),&S_stat);
	if(!S_ISDIR(S_stat.st_mode)){
	if(len>0){
	if((int)s1.size()<len+1) continue;
	if(s1[s1.size()-len-1]!='.') continue;
	if(strcasecmp(&s1[s1.size()-len],extension)) continue;
	}

	if(containsPath){
	v.push_back(s1);
	}else{
	v.push_back(string(pDirent->d_name));
	}
	}
	}
	closedir(pDir);
	return v;
	#endif
	}

	std::vector<std::string> enumAllDirs(std::string path,bool containsPath){
	vector<string> v;
	#ifdef WIN32
	string s1;
	WIN32_FIND_DATAA f;
	if(!path.empty()){
	char c=path[path.size()-1];
	if(c!='/'&&c!='\\') path+="\\";
	}
	s1=path+"*";
	HANDLE h=FindFirstFileA(s1.c_str(),&f);
	if(h==NULL\|\|h==INVALID_HANDLE_VALUE) return v;
	do{
	// skip '.' and '..' and hidden folders
	if(f.cFileName[0]=='.'){
	/*if(f.cFileName[1]==0\|\|
	(f.cFileName[1]=='.'&&f.cFileName[2]==0))*/ continue;
	}
	if(f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY){
	if(containsPath){
	v.push_back(path+f.cFileName);
	}else{
	v.push_back(f.cFileName);
	}
	}
	}while(FindNextFileA(h,&f));
	FindClose(h);
	return v;
	#else
	if(!path.empty()){
	char c=path[path.size()-1];
	if(c!='/'&&c!='\\') path+="/";
	}
	DIR *pDir;
	struct dirent *pDirent;
	pDir=opendir(path.c_str());
	if(pDir==NULL) return v;
	while((pDirent=readdir(pDir))!=NULL){
	if(pDirent->d_name[0]=='.'){
	if(pDirent->d_name[1]==0\|\|
	(pDirent->d_name[1]=='.'&&pDirent->d_name[2]==0)) continue;
	}
	string s1=path+pDirent->d_name;
	struct stat S_stat;
	lstat(s1.c_str(),&S_stat);
	if(S_ISDIR(S_stat.st_mode)){
	//Skip hidden folders.
	s1=string(pDirent->d_name);
	if(s1.find('.')==0) continue;

	//Add result to vector.
	if(containsPath){
	v.push_back(path+pDirent->d_name);
	}else{
	v.push_back(s1);
	}
	}
	}
	closedir(pDir);
	return v;
	#endif
	}

	std::string processFileName(const std::string& s){
	string prefix=dataPath;

	//FIXME: Do we still need those last three?
	//REMARK: maybe 'return prefix+s;' is not needed (?)
	// it causes some bugs such as can't save level progress
	if(s.compare(0,6,"%DATA%")==0){
	if(s.size()>6 && (s[6]=='/' \|\| s[6]=='\\')){
	return dataPath+s.substr(7);
	}else{
	return dataPath+s.substr(6);
	}
	}else if(s.compare(0,6,"%USER%")==0){
	if(s.size()>6 && (s[6]=='/' \|\| s[6]=='\\')){
	return getUserPath(USER_DATA)+s.substr(7);
	}else{
	return getUserPath(USER_DATA)+s.substr(6);
	}
	}else if(s.compare(0,9,"%LVLPACK%")==0){
	if(s.size()>9 && (s[9]=='/' \|\| s[9]=='\\')){
	return prefix+"levelpacks/"+s.substr(10);
	}else{
	return prefix+"levelpacks/"+s.substr(9);
	}
	}else if(s.compare(0,5,"%LVL%")==0){
	if(s.size()>5 && (s[5]=='/' \|\| s[5]=='\\')){
	return prefix+"levels/"+s.substr(6);
	}else{
	return prefix+"levels/"+s.substr(5);
	}
	}else if(s.compare(0,8,"%THEMES%")==0){
	if(s.size()>8 && (s[8]=='/' \|\| s[8]=='\\')){
	return prefix+"themes/"+s.substr(9);
	}else{
	return prefix+"themes/"+s.substr(8);
	}
	}else if(s.size()>0 && (s[0]=='/' \|\| s[0]=='\\')){
	return s;
	#ifdef WIN32
	// Another fix for Windows :(
	}else if(s.size()>1 && (s[1]==':')){
	return s;
	#endif
	}else{
	#if defined(ANDROID)
	//REMARK: maybe 'return prefix+s;' is not needed (?)
	// it causes some bugs such as can't save level progress in Android.
	return s;
	#else
	return prefix+s;
	#endif
	}
	}

	std::string compressFileName(const std::string& s){
	//FIXME: Do we need the other ones from processFileName?

	//Check if the data path is at the start.
	size_t pos=s.find(getDataPath());
	if(pos!=string::npos){
	pos+=getDataPath().size();
	return "%DATA%/"+s.substr(pos);
	}
	pos=s.find(getUserPath(USER_DATA));
	if(pos!=string::npos){
	pos+=getUserPath(USER_DATA).size();
	return "%USER%/"+s.substr(pos);
	}

	return s;
	}

	std::string fileNameFromPath(const std::string &path, const bool webURL){
	std::string filename;
	size_t pos;
	#ifdef WIN32
	// NOTE: '/' in string should be '/' not '\/',
	// we don't need to escape it
	if(webURL){
	pos = path.find_last_of("/");
	}else{
	// NOTE: sometimes path separator in Windows can be '/',
	// so we must check botn '\' and '/'
	pos = path.find_last_of("\\/");
	}
	#else
	// NOTE: '/' in string should be '/' not '\/',
	// we don't need to escape it
	pos = path.find_last_of("/");
	#endif
	if(pos != std::string::npos)
	filename.assign(path.begin() + pos + 1, path.end());
	else
	filename=path;

	return filename;
	}

	std::string pathFromFileName(const std::string &filename){
	std::string path;
	// NOTE: '/' in string should be '/' not '\/',
	// we don't need to escape it
	#ifdef WIN32
	// NOTE: sometimes path separator in Windows can be '/',
	// so we must check botn '\' and '/'
	size_t pos = filename.find_last_of("\\/");
	#else
	size_t pos = filename.find_last_of("/");
	#endif
	if(pos != std::string::npos)
	path.assign(filename.begin(), filename.begin() + pos +1);
	else
	path=filename;

	return path;
	}

	bool downloadFile(const string &path, const string &destination) {
	string filename=fileNameFromPath(path,true);

	FILE* file = fopen((destination+filename).c_str(), "wb");
	bool status=downloadFile(path,file);
	fclose(file);

	//And return the status.
	return status;
	}

	bool downloadFile(const string &path, FILE* destination) {
	CURL* curl=curl_easy_init();

	// proxy test (test only)
	string internetProxy = getSettings()->getValue("internet-proxy");
	size_t pos = internetProxy.find_first_of(":");
	if(pos!=string::npos){
	curl_easy_setopt(curl,CURLOPT_PROXYPORT,atoi(internetProxy.substr(pos+1).c_str()));
	internetProxy = internetProxy.substr(0,pos);
	curl_easy_setopt(curl,CURLOPT_PROXY,internetProxy.c_str());
	}

	curl_easy_setopt(curl,CURLOPT_URL,path.c_str());
	curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,writeData);
	curl_easy_setopt(curl,CURLOPT_WRITEDATA,destination);
	CURLcode res = curl_easy_perform(curl);
	curl_easy_cleanup(curl);

	return (res==0);
	}

	size_t writeData(void ptr, size_t size, size_t nmemb, void stream){
	return fwrite(ptr, size, nmemb, (FILE *)stream);
	}


	bool extractFile(const string &fileName, const string &destination) {
	//Create the archive we're going to extract.
	archive* file;
	//Create the destination we're going to extract to.
	archive* dest;

	file=archive_read_new();
	dest=archive_write_disk_new();
	archive_write_disk_set_options(dest, ARCHIVE_EXTRACT_TIME);

	archive_read_support_format_zip(file);

	//Now read the archive.
	if(archive_read_open_file(file,fileName.c_str(),10240)) {
	cerr<<"Error while reading archive "+fileName<<endl;
	return false;
	}

	//Now write every entry to disk.
	int status;
	archive_entry* entry=NULL;
	while(true) {
	status=archive_read_next_header(file,&entry);
	if(status==ARCHIVE_EOF){
	break;
	}
	if(status!=ARCHIVE_OK){
	cerr<<"Error while reading archive "+fileName<<endl;
	return false;
	}
	archive_entry_copy_pathname(entry,(destination+archive_entry_pathname(entry)).c_str());

	status=archive_write_header(dest,entry);
	if(status!=ARCHIVE_OK){
	cerr<<"Error while extracting archive "+fileName<<endl;
	return false;
	}else{
	copyData(file, dest);
	status=archive_write_finish_entry(dest);
	if(status!=ARCHIVE_OK){
	cerr<<"Error while extracting archive "+fileName<<endl;
	return false;
	}

	}
	}

	//Finally close the archive.
	archive_read_close(file);
	archive_read_finish(file);
	return true;
	}

	bool dirExists(const char* dir){
	#ifdef __linux__
	struct stat sb;
	if(stat(dir,&sb) == 0 && S_ISDIR(sb.st_mode)){
	return true;
	}
	+ return false;
	#elif defined(WIN32)
	int attr=GetFileAttributesA(dir);
	if(attr==INVALID_FILE_ATTRIBUTES) return false;
	return (attr & FILE_ATTRIBUTE_DIRECTORY)!=0;
	#else
	#error Add your system's code here
	#endif
	}

	bool createDirectory(const char* path){
	#ifdef WIN32
	char s0[1024],s[1024];

	GetCurrentDirectoryA(sizeof(s0),s0);
	PathCombineA(s,s0,path);

	for(unsigned int i=0;i<sizeof(s);i++){
	if(s[i]=='\0') break;
	else if(s[i]=='/') s[i]='\\';
	}

	//printf("createDirectory:%s\n",s);
	return SHCreateDirectoryExA(NULL,s,NULL)!=0;
	#else
	return mkdir(path,0777)==0;
	#endif
	}

	bool removeDirectory(const char *path){
	#ifdef WIN32
	WIN32_FIND_DATAA f;
	HANDLE h = FindFirstFileA((string(path)+"\\*").c_str(),&f);
	#else
	//Open the directory that needs to be removed.
	DIR* d=opendir(path);
	#endif
	//Get the path length
	size_t path_len = strlen(path);
	//Boolean if the directory is emptied.
	//True: succes False: failure
	//Default is true because if the directory is empty it will never enter the while loop, but we still have success.
	bool r = true;

	#ifdef WIN32
	if(h!=NULL && h!=INVALID_HANDLE_VALUE) {
	#else
	//Check if the directory exists.
	if(d) {
	//Pointer to an entry of the directory.
	struct dirent* p;
	#endif

	#ifdef WIN32
	do{
	#else
	//Loop the entries of the directory that needs to be removed as long as there's no error.
	while(r && (p=readdir(d))) {
	#endif

	/* Skip the names "." and ".." as we don't want to recurse on them. */
	#ifdef WIN32
	if (!strcmp(f.cFileName, ".") \|\| !strcmp(f.cFileName, "..")) {
	#else
	if (!strcmp(p->d_name, ".") \|\| !strcmp(p->d_name, "..")) {
	#endif
	//The filename is . or .. so we continue to the next entry.
	continue;
	} else {
	//r2 tells if the entry is deleted.
	//True: succes False: failure
	//Default is false.
	bool r2 = false;
	char* buf;
	size_t len;

	#ifdef WIN32
	//Get the length of the path + the directory entry name.
	len = path_len + strlen(f.cFileName) + 2;
	#else
	//Get the length of the path + the directory entry name.
	len = path_len + strlen(p->d_name) + 2;
	#endif
	buf = (char*) malloc(len);

	if(buf) {
	#ifdef WIN32
	_snprintf(buf, len, "%s\\%s", path, f.cFileName);

	if(f.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY){
	r2 = removeDirectory(buf);
	}else{
	r2 = unlink(buf)==0;
	}
	#else
	struct stat statbuf;
	snprintf(buf, len, "%s/%s", path, p->d_name);

	if(!stat(buf, &statbuf)){
	//Check if the entry is a directory or a file.
	if (S_ISDIR(statbuf.st_mode)){
	//We call ourself(removeDirectory) recursively.
	//We return true on success.
	r2 = removeDirectory(buf);
	}else{
	//unlink() returns zero on succes so we set r2 to the unlink(buf)==0.
	r2 = unlink(buf)==0;
	}
	}
	#endif
	//Free the buf.
	free(buf);
	}
	//We set r to r2 since r2 contains the status of the latest deletion.
	r = r2;
	}
	#ifdef WIN32
	}while(r && FindNextFileA(h,&f));
	FindClose(h);
	#else
	}
	//Close the directory.
	closedir(d);
	#endif
	}

	//The while loop has ended, meaning we (tried) cleared the directory.
	//If r is true, meaning no errors we can delete the directory.
	if(r){
	//The return value of rmdir is 0 when it succeeded.
	r = rmdir(path)==0;
	}

	//Return the status.
	return r;
	}

	bool renameDirectory(const char* oldPath,const char* newPath){
	return rename(oldPath,newPath)==0;
	}


	void copyData(archive* file, archive* dest) {
	int status;
	const void* buff;
	size_t size;
	#if ARCHIVE_VERSION_NUMBER < 3000000
	off_t offset;
	#else
	int64_t offset;
	#endif


	while(true) {
	status=archive_read_data_block(file, &buff, &size, &offset);
	if(status==ARCHIVE_EOF){
	return;
	}
	if(status!=ARCHIVE_OK){
	cerr<<"Error while writing data to disk."<<endl;
	return;
	}
	status=archive_write_data_block(dest, buff, size, offset);
	if(status!=ARCHIVE_OK) {
	cerr<<"Error while writing data to disk."<<endl;
	return;
	}
	}
	}

	bool copyFile(const char* source,const char* dest){
	//Open the source file.
	ifstream fin(source,fstream::binary);
	if(!fin)
	return false;

	//Open the dest file.
	ofstream fout(dest,fstream::trunc\|fstream::binary);
	if(!fout)
	return false;

	//Copy.
	fout<<fin.rdbuf();
	return true;
	}

	bool removeFile(const char* file){
	return remove(file)==0;
	}

	bool fileExists(const char* file){
	#ifdef WIN32
	bool ret=false;
	HANDLE h=CreateFileA(file,0,FILE_SHARE_READ \| FILE_SHARE_WRITE \| FILE_SHARE_DELETE,NULL,OPEN_EXISTING,0,NULL);
	if(h!=INVALID_HANDLE_VALUE){
	ret=true;
	CloseHandle(h);
	}
	return ret;
	#else
	return (access(file,F_OK)==0);
	#endif
	}

	bool createFile(const char* file){
	//Open the file with write permission.
	FILE* f=fopen(file,"wb");

	//Check if there are no problems.
	if(f){
	//Close the file.
	fclose(f);
	return true;
	}else{
	return false;
	}
	}

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