LevelEditSelect.cpp
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LevelEditSelect.cpp
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	/*
	* Copyright (C) 2012 Me and My Shadow
	*
	* This file is part of Me and My Shadow.
	*
	* Me and My Shadow is free software: you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	*
	* Me and My Shadow is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include "LevelEditSelect.h"
	#include "GameState.h"
	#include "Functions.h"
	#include "FileManager.h"
	#include "Globals.h"
	#include "Objects.h"
	#include "GUIObject.h"
	#include "GUIListBox.h"
	#include "GUIScrollBar.h"
	#include "InputManager.h"
	#include "Game.h"
	#include "GUIOverlay.h"
	#include <SDL/SDL_ttf.h>
	#include <SDL/SDL.h>
	#include <stdio.h>
	#include <algorithm>
	#include <string>
	#include <iostream>

	#include "libs/tinyformat/tinyformat.h"

	using namespace std;

	LevelEditSelect::LevelEditSelect():LevelSelect(_("Map Editor"),LevelPackManager::CUSTOM_PACKS){
	//Create the gui.
	createGUI(true);

	//Set the levelEditGUIObjectRoot.
	levelEditGUIObjectRoot=GUIObjectRoot;

	//show level list
	changePack();
	refresh();
	}

	LevelEditSelect::~LevelEditSelect(){
	selectedNumber=NULL;
	}

	void LevelEditSelect::createGUI(bool initial){
	if(initial){
	//The levelpack name text field.
	levelpackName=new GUIObject(280,104,240,32,GUIObjectTextBox);
	levelpackName->eventCallback=this;
	levelpackName->visible=false;
	GUIObjectRoot->childControls.push_back(levelpackName);
	}

	if(!initial){
	//Remove the previous buttons.
	for(int i=0;i<GUIObjectRoot->childControls.size();i++){
	if(GUIObjectRoot->childControls[i]->type==GUIObjectButton && GUIObjectRoot->childControls[i]->caption!=_("Back")){
	delete GUIObjectRoot->childControls[i];
	GUIObjectRoot->childControls.erase(GUIObjectRoot->childControls.begin()+i);
	i--;
	}
	}
	}

	//Create the six buttons at the bottom of the screen.
	GUIObject* obj=new GUIObject(SCREEN_WIDTH*0.02,SCREEN_HEIGHT-120,-1,32,GUIObjectButton,_("New Levelpack"));
	obj->name="cmdNewLvlpack";
	obj->eventCallback=this;
	GUIObjectRoot->childControls.push_back(obj);

	propertiesPack=new GUIObject(SCREEN_WIDTH*0.5,SCREEN_HEIGHT-120,-1,32,GUIObjectButton,_("Pack Properties"),0,true,true,GUIGravityCenter);
	propertiesPack->name="cmdLvlpackProp";
	propertiesPack->eventCallback=this;
	GUIObjectRoot->childControls.push_back(propertiesPack);

	removePack=new GUIObject(SCREEN_WIDTH*0.98,SCREEN_HEIGHT-120,-1,32,GUIObjectButton,_("Remove Pack"),0,true,true,GUIGravityRight);
	removePack->name="cmdRmLvlpack";
	removePack->eventCallback=this;
	GUIObjectRoot->childControls.push_back(removePack);

	move=new GUIObject(SCREEN_WIDTH*0.02,SCREEN_HEIGHT-60,-1,32,GUIObjectButton,_("Move Map"));
	move->name="cmdMoveMap";
	move->eventCallback=this;
	//NOTE: Set enabled equal to the inverse of initial.
	//When resizing the window initial will be false and therefor the move button can stay enabled.
	move->enabled=false;
	GUIObjectRoot->childControls.push_back(move);

	remove=new GUIObject(SCREEN_WIDTH*0.5,SCREEN_HEIGHT-60,-1,32,GUIObjectButton,_("Remove Map"),0,false,true,GUIGravityCenter);
	remove->name="cmdRmMap";
	remove->eventCallback=this;
	GUIObjectRoot->childControls.push_back(remove);

	edit=new GUIObject(SCREEN_WIDTH*0.98,SCREEN_HEIGHT-60,-1,32,GUIObjectButton,_("Edit Map"),0,false,true,GUIGravityRight);
	edit->name="cmdEdit";
	edit->eventCallback=this;
	GUIObjectRoot->childControls.push_back(edit);

	//Now update widgets and then check if they overlap
	GUIObjectRoot->render(0,0,false);
	if(propertiesPack->left-propertiesPack->gravityX < obj->left+obj->width \|\|
	propertiesPack->left-propertiesPack->gravityX+propertiesPack->width > removePack->left-removePack->gravityX){
	obj->smallFont=true;
	obj->width=-1;

	propertiesPack->smallFont=true;
	propertiesPack->width=-1;

	removePack->smallFont=true;
	removePack->width=-1;

	move->smallFont=true;
	move->width=-1;

	remove->smallFont=true;
	remove->width=-1;

	edit->smallFont=true;
	edit->width=-1;
	}

	//Check again
	GUIObjectRoot->render(0,0,false);
	if(propertiesPack->left-propertiesPack->gravityX < obj->left+obj->width \|\|
	propertiesPack->left-propertiesPack->gravityX+propertiesPack->width > removePack->left-removePack->gravityX){
	obj->left = SCREEN_WIDTH*0.02;
	obj->top = SCREEN_HEIGHT-140;
	obj->smallFont=false;
	obj->width=-1;
	obj->gravity = GUIGravityLeft;

	propertiesPack->left = SCREEN_WIDTH*0.02;
	propertiesPack->top = SCREEN_HEIGHT-100;
	propertiesPack->smallFont=false;
	propertiesPack->width=-1;
	propertiesPack->gravity = GUIGravityLeft;

	removePack->left = SCREEN_WIDTH*0.02;
	removePack->top = SCREEN_HEIGHT-60;
	removePack->smallFont=false;
	removePack->width=-1;
	removePack->gravity = GUIGravityLeft;

	move->left = SCREEN_WIDTH*0.98;
	move->top = SCREEN_HEIGHT-140;
	move->smallFont=false;
	move->width=-1;
	move->gravity = GUIGravityRight;

	remove->left = SCREEN_WIDTH*0.98;
	remove->top = SCREEN_HEIGHT-100;
	remove->smallFont=false;
	remove->width=-1;
	remove->gravity = GUIGravityRight;

	edit->left = SCREEN_WIDTH*0.98;
	edit->top = SCREEN_HEIGHT-60;
	edit->smallFont=false;
	edit->width=-1;
	edit->gravity = GUIGravityRight;
	}
	}

	void LevelEditSelect::changePack(){
	packName=levelpacks->item[levelpacks->value];
	if(packName=="Custom Levels"){
	//Disable some levelpack buttons.
	propertiesPack->enabled=false;
	removePack->enabled=false;
	}else{
	//Enable some levelpack buttons.
	propertiesPack->enabled=true;
	removePack->enabled=true;
	}

	//Set last levelpack.
	getSettings()->setValue("lastlevelpack",packName);

	//Now let levels point to the right pack.
	levels=getLevelPackManager()->getLevelPack(packName);
	}

	void LevelEditSelect::packProperties(bool newPack){
	//Open a message popup.
	GUIObject* root=new GUIObject((SCREEN_WIDTH-600)/2,(SCREEN_HEIGHT-320)/2,600,320,GUIObjectFrame,_("Properties"));
	GUIObject* obj;

	obj=new GUIObject(40,50,240,36,GUIObjectLabel,_("Name:"));
	root->childControls.push_back(obj);

	obj=new GUIObject(60,80,480,36,GUIObjectTextBox,packName.c_str());
	if(newPack)
	obj->caption="";
	obj->name="LvlpackName";
	root->childControls.push_back(obj);

	obj=new GUIObject(40,120,240,36,GUIObjectLabel,_("Description:"));
	root->childControls.push_back(obj);

	obj=new GUIObject(60,150,480,36,GUIObjectTextBox,levels->levelpackDescription.c_str());
	if(newPack)
	obj->caption="";
	obj->name="LvlpackDescription";
	root->childControls.push_back(obj);

	obj=new GUIObject(40,190,240,36,GUIObjectLabel,_("Congratulation text:"));
	root->childControls.push_back(obj);

	obj=new GUIObject(60,220,480,36,GUIObjectTextBox,levels->congratulationText.c_str());
	if(newPack)
	obj->caption="";
	obj->name="LvlpackCongratulation";
	root->childControls.push_back(obj);

	obj=new GUIObject(root->width*0.3,320-44,-1,36,GUIObjectButton,_("OK"),0,true,true,GUIGravityCenter);
	obj->name="cfgOK";
	obj->eventCallback=this;
	root->childControls.push_back(obj);
	obj=new GUIObject(root->width*0.7,320-44,-1,36,GUIObjectButton,_("Cancel"),0,true,true,GUIGravityCenter);
	obj->name="cfgCancel";
	obj->eventCallback=this;
	root->childControls.push_back(obj);

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

	if(newPack){
	packName.clear();
	}
	}

	void LevelEditSelect::addLevel(){
	//Open a message popup.
	GUIObject* root=new GUIObject((SCREEN_WIDTH-600)/2,(SCREEN_HEIGHT-200)/2,600,200,GUIObjectFrame,_("Add level"));
	GUIObject* obj;

	obj=new GUIObject(40,80,240,36,GUIObjectLabel,_("File name:"));
	root->childControls.push_back(obj);

	char s[64];
	sprintf(s,"map%02d.map",levels->getLevelCount()+1);
	obj=new GUIObject(300,80,240,36,GUIObjectTextBox,s);
	obj->name="LvlFile";
	root->childControls.push_back(obj);

	obj=new GUIObject(root->width*0.3,200-44,-1,36,GUIObjectButton,_("OK"),0,true,true,GUIGravityCenter);
	obj->name="cfgAddOK";
	obj->eventCallback=this;
	root->childControls.push_back(obj);
	obj=new GUIObject(root->width*0.7,200-44,-1,36,GUIObjectButton,_("Cancel"),0,true,true,GUIGravityCenter);
	obj->name="cfgAddCancel";
	obj->eventCallback=this;
	root->childControls.push_back(obj);

	//Dim the screen using the tempSurface.
	GUIOverlay* overlay=new GUIOverlay(root);
	}

	void LevelEditSelect::moveLevel(){
	//Open a message popup.
	GUIObject* root=new GUIObject((SCREEN_WIDTH-600)/2,(SCREEN_HEIGHT-200)/2,600,200,GUIObjectFrame,_("Move level"));
	GUIObject* obj;

	obj=new GUIObject(40,60,240,36,GUIObjectLabel,_("Level: "));
	root->childControls.push_back(obj);

	obj=new GUIObject(300,60,240,36,GUIObjectTextBox,"1");
	obj->name="MoveLevel";
	root->childControls.push_back(obj);

	obj=new GUISingleLineListBox(root->width*0.5,110,240,36,true,true,GUIGravityCenter);
	obj->name="lstPlacement";
	vector<string> v;
	v.push_back(_("Before"));
	v.push_back(_("After"));
	v.push_back(_("Swap"));
	(dynamic_cast<GUISingleLineListBox*>(obj))->item=v;
	obj->value=0;
	root->childControls.push_back(obj);

	obj=new GUIObject(root->width*0.3,200-44,-1,36,GUIObjectButton,_("OK"),0,true,true,GUIGravityCenter);
	obj->name="cfgMoveOK";
	obj->eventCallback=this;
	root->childControls.push_back(obj);
	obj=new GUIObject(root->width*0.7,200-44,-1,36,GUIObjectButton,_("Cancel"),0,true,true,GUIGravityCenter);
	obj->name="cfgMoveCancel";
	obj->eventCallback=this;
	root->childControls.push_back(obj);

	//Create the gui overlay.
	GUIOverlay* overlay=new GUIOverlay(root);
	}

	void LevelEditSelect::refresh(bool change){
	int m=levels->getLevelCount();

	if(change){
	numbers.clear();

	//clear the selected level
	if(selectedNumber!=NULL){
	selectedNumber=NULL;
	}

	//Disable the level specific buttons.
	move->enabled=false;
	remove->enabled=false;
	edit->enabled=false;

	for(int n=0;n<=m;n++){
	numbers.push_back(Number());
	}
	}

	for(int n=0;n<m;n++){
	SDL_Rect box={(n%LEVELS_PER_ROW)64+80,(n/LEVELS_PER_ROW)64+184,0,0};
	numbers[n].init(n,box);
	}
	SDL_Rect box={(m%LEVELS_PER_ROW)64+80,(m/LEVELS_PER_ROW)64+184,0,0};
	numbers[m].init("+",box);

	m++; //including the "+" button
	if(m>LEVELS_DISPLAYED_IN_SCREEN){
	levelScrollBar->maxValue=(m-LEVELS_DISPLAYED_IN_SCREEN+LEVELS_PER_ROW-1)/LEVELS_PER_ROW;
	levelScrollBar->visible=true;
	}else{
	levelScrollBar->maxValue=0;
	levelScrollBar->visible=false;
	}
	if(!levels->levelpackDescription.empty())
	levelpackDescription->caption=_C(levels->getDictionaryManager(),levels->levelpackDescription);
	else
	levelpackDescription->caption="";
	}

	void LevelEditSelect::selectNumber(unsigned int number,bool selected){
	if(selected){
	levels->setCurrentLevel(number);
	setNextState(STATE_LEVEL_EDITOR);

	//Pick music from the current music list.
	getMusicManager()->pickMusic();
	}else{
	if(number==numbers.size()-1){
	addLevel();
	}else if(number>=0 && number<numbers.size()){
	selectedNumber=&numbers[number];

	//Enable the level specific buttons.
	//NOTE: We check if 'remove levelpack' is enabled, if not then it's the Levels levelpack.
	if(removePack->enabled)
	move->enabled=true;
	remove->enabled=true;
	edit->enabled=true;
	}
	}
	}

	void LevelEditSelect::render(){
	//Let the levelselect render.
	LevelSelect::render();
	}

	void LevelEditSelect::resize(){
	//Let the levelselect resize.
	LevelSelect::resize();

	//Create the GUI.
	createGUI(false);

	//NOTE: This is a workaround for buttons failing when resizing.
	if(packName=="Custom Levels"){
	removePack->enabled=false;
	propertiesPack->enabled=false;
	}
	if(selectedNumber)
	selectNumber(selectedNumber->getNumber(),false);

	}

	void LevelEditSelect::renderTooltip(unsigned int number,int dy){
	SDL_Color fg={0,0,0};
	SDL_Surface* name;

	if(number==(unsigned)levels->getLevelCount()){
	//Render the name of the level.
	name=TTF_RenderUTF8_Blended(fontText,_("Add level"),fg);
	}else{
	//Render the name of the level.
	name=TTF_RenderUTF8_Blended(fontText,_C(levels->getDictionaryManager(),levels->getLevelName(number)),fg);
	}

	//Check if name isn't null.
	if(name==NULL)
	return;

	//Now draw a square the size of the three texts combined.
	SDL_Rect r=numbers[number].box;
	r.y-=dy*64;
	r.w=name->w;
	r.h=name->h;

	//Make sure the tooltip doesn't go outside the window.
	if(r.y>SCREEN_HEIGHT-200){
	r.y-=name->h+4;
	}else{
	r.y+=numbers[number].box.h+2;
	}
	if(r.x+r.w>SCREEN_WIDTH-50)
	r.x=SCREEN_WIDTH-50-r.w;

	//Draw a rectange
	Uint32 color=0xFFFFFF00\|240;
	drawGUIBox(r.x-5,r.y-5,r.w+10,r.h+10,screen,color);

	//Calc the position to draw.
	SDL_Rect r2=r;

	//Now we render the name if the surface isn't null.
	if(name!=NULL){
	//Draw the name.
	SDL_BlitSurface(name,NULL,screen,&r2);
	}

	//And free the surfaces.
	SDL_FreeSurface(name);
	}

	void LevelEditSelect::GUIEventCallback_OnEvent(std::string name,GUIObject* obj,int eventType){
	//NOTE: We check for the levelpack change to enable/disable some levelpack buttons.
	if(name=="cmdLvlPack"){
	//We call changepack and return to prevent the LevelSelect to undo what we did.
	changePack();
	refresh();
	return;
	}

	//Let the level select handle his GUI events.
	LevelSelect::GUIEventCallback_OnEvent(name,obj,eventType);

	//Check for the edit button.
	if(name=="cmdNewLvlpack"){
	//Create a new pack.
	packProperties(true);
	}else if(name=="cmdLvlpackProp"){
	//Show the pack properties.
	packProperties(false);
	}else if(name=="cmdRmLvlpack"){
	//Show an "are you sure" message.
	if(msgBox(_("Are you sure?"),MsgBoxYesNo,_("Remove prompt"))==MsgBoxYes){
	//Remove the directory.
	if(!removeDirectory(levels->levelpackPath.c_str())){
	cerr<<"ERROR: Unable to remove levelpack directory "<<levels->levelpackPath<<endl;
	}

	//Remove it from the vector (levelpack list).
	vector<string>::iterator it;
	it=find(levelpacks->item.begin(),levelpacks->item.end(),packName);
	if(it!=levelpacks->item.end()){
	levelpacks->item.erase(it);
	}

	//Remove it from the levelpackManager.
	getLevelPackManager()->removeLevelPack(packName);

	//And call changePack.
	levelpacks->value=levelpacks->item.size()-1;
	changePack();
	refresh();
	}
	}else if(name=="cmdMoveMap"){
	if(selectedNumber!=NULL){
	moveLevel();
	}
	}else if(name=="cmdRmMap"){
	if(selectedNumber!=NULL){
	if(packName!="Custom Levels"){
	if(!removeFile((levels->levelpackPath+"/"+levels->getLevel(selectedNumber->getNumber())->file).c_str())){
	cerr<<"ERROR: Unable to remove level "<<(levels->levelpackPath+"/"+levels->getLevel(selectedNumber->getNumber())->file).c_str()<<endl;
	}
	levels->removeLevel(selectedNumber->getNumber());
	levels->saveLevels(levels->levelpackPath+"/levels.lst");
	}else{
	//This is the levels levelpack so we just remove the file.
	if(!removeFile(levels->getLevel(selectedNumber->getNumber())->file.c_str())){
	cerr<<"ERROR: Unable to remove level "<<levels->getLevel(selectedNumber->getNumber())->file<<endl;
	}
	levels->removeLevel(selectedNumber->getNumber());
	}

	//And refresh the selection screen.
	refresh();
	}
	}else if(name=="cmdEdit"){
	if(selectedNumber!=NULL){
	levels->setCurrentLevel(selectedNumber->getNumber());
	setNextState(STATE_LEVEL_EDITOR);

	//Pick music from the current music list.
	getMusicManager()->pickMusic();
	}
	}

	//Check for levelpack properties events.
	if(name=="cfgOK"){
	//Now loop throught the children of the GUIObjectRoot in search of the fields.
	for(unsigned int i=0;i<GUIObjectRoot->childControls.size();i++){
	if(GUIObjectRoot->childControls[i]->name=="LvlpackName"){
	//Check if the name changed.
	if(packName!=GUIObjectRoot->childControls[i]->caption){
	//Delete the old one.
	if(!packName.empty()){
	if(!renameDirectory((getUserPath(USER_DATA)+"custom/levelpacks/"+packName).c_str(),(getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption).c_str())){
	cerr<<"ERROR: Unable to move levelpack directory "<<(getUserPath(USER_DATA)+"custom/levelpacks/"+packName)<<" to "<<(getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption)<<endl;
	}

	//Remove the old one from the levelpack manager.
	getLevelPackManager()->removeLevelPack(packName);

	//And the levelpack list.
	vector<string>::iterator it1;
	it1=find(levelpacks->item.begin(),levelpacks->item.end(),packName);
	if(it1!=levelpacks->item.end()){
	levelpacks->item.erase(it1);
	if((unsigned)levelpacks->value>levelpacks->item.size())
	levelpacks->value=levelpacks->item.size()-1;
	}
	}else{
	//It's a new levelpack so we need to change the levels array.
	LevelPack* pack=new LevelPack;
	levels=pack;

	//Now create the dirs.
	if(!createDirectory((getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption).c_str())){
	cerr<<"ERROR: Unable to create levelpack directory "<<(getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption)<<endl;
	}
	if(!createFile((getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption+"/levels.lst").c_str())){
	cerr<<"ERROR: Unable to create levelpack file "<<(getUserPath(USER_DATA)+"custom/levelpacks/"+GUIObjectRoot->childControls[i]->caption+"/levels.lst")<<endl;
	}
	}
	//And set the new name.
	packName=GUIObjectRoot->childControls[i]->caption;
	levels->levelpackName=packName;
	levels->levelpackPath=(getUserPath(USER_DATA)+"custom/levelpacks/"+packName+"/");

	//Also add the levelpack location
	getLevelPackManager()->addLevelPack(levels);
	levelpacks->item.push_back(GUIObjectRoot->childControls[i]->caption);
	levelpacks->value=levelpacks->item.size()-1;

	//And call changePack.
	changePack();
	}
	}
	if(GUIObjectRoot->childControls[i]->name=="LvlpackDescription"){
	levels->levelpackDescription=GUIObjectRoot->childControls[i]->caption;
	}
	if(GUIObjectRoot->childControls[i]->name=="LvlpackCongratulation"){
	levels->congratulationText=GUIObjectRoot->childControls[i]->caption;
	}
	}
	//Refresh the leveleditselect to show the correct information.
	refresh();

	//Save the configuration.
	levels->saveLevels(getUserPath(USER_DATA)+"custom/levelpacks/"+packName+"/levels.lst");
	getSettings()->setValue("lastlevelpack",packName);

	//Clear the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}else if(name=="cfgCancel"){
	//Check if packName is empty, if so it was a new levelpack and we need to revert to an existing one.
	if(packName.empty()){
	packName=levelpacks->item[levelpacks->value];
	changePack();
	}

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

	//Check for add level events.
	if(name=="cfgAddOK"){
	//Check if the file name isn't null.
	//Now loop throught the children of the GUIObjectRoot in search of the fields.
	for(unsigned int i=0;i<GUIObjectRoot->childControls.size();i++){
	if(GUIObjectRoot->childControls[i]->name=="LvlFile"){
	if(GUIObjectRoot->childControls[i]->caption.empty()){
	msgBox(_("No file name given for the new level."),MsgBoxOKOnly,_("Missing file name"));
	return;
	}else{
	string tmp_caption = GUIObjectRoot->childControls[i]->caption;

	//Replace all spaces with a underline.
	size_t j;
	for(;(j=tmp_caption.find(" "))!=string::npos;){
	tmp_caption.replace(j,1,"_");
	}

	//If there isn't ".map" extension add it.
	size_t found=tmp_caption.find_first_of(".");
	if(found!=string::npos)
	tmp_caption.replace(tmp_caption.begin()+found+1,tmp_caption.end(),"map");
	else if (tmp_caption.substr(found+1)!="map")
	tmp_caption.append(".map");

	/* Create path and file in it */
	string path=(levels->levelpackPath+"/"+tmp_caption);
	if(packName=="Custom Levels"){
	path=(getUserPath(USER_DATA)+"/custom/levels/"+tmp_caption);
	}

	//First check if the file doesn't exist already.
	FILE* f;
	f=fopen(path.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();
	levelEditGUIObjectRoot->render();

	//Notify the user.
	msgBox(("The file "+tmp_caption+" already exists.").c_str(),MsgBoxOKOnly,"Error");
	return;
	}

	if(!createFile(path.c_str())){
	cerr<<"ERROR: Unable to create level file "<<path<<endl;
	}
	levels->addLevel(path);
	if(packName!="Custom Levels")
	levels->saveLevels(getUserPath(USER_DATA)+"custom/levelpacks/"+packName+"/levels.lst");
	refresh();

	//Clear the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	return;
	}
	}
	}
	}
	}else if(name=="cfgAddCancel"){
	//Clear the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}

	//Check for move level events.
	if(name=="cfgMoveOK"){
	//Check if the entered level number is valid.
	//Now loop throught the children of the GUIObjectRoot in search of the fields.
	int level=0;
	int placement=0;
	for(unsigned int i=0;i<GUIObjectRoot->childControls.size();i++){
	if(GUIObjectRoot->childControls[i]->name=="MoveLevel"){
	level=atoi(GUIObjectRoot->childControls[i]->caption.c_str());
	if(level<=0 \|\| level>levels->getLevelCount()){
	msgBox(_("The entered level number isn't valid!"),MsgBoxOKOnly,_("Illegal number"));
	return;
	}
	}
	if(GUIObjectRoot->childControls[i]->name=="lstPlacement"){
	placement=GUIObjectRoot->childControls[i]->value;
	}
	}

	//Now we execute the swap/move.
	//Check for the place before.
	if(placement==0){
	//We place the selected level before the entered level.
	levels->moveLevel(selectedNumber->getNumber(),level-1);
	}else if(placement==1){
	//We place the selected level after the entered level.
	if(level<selectedNumber->getNumber())
	levels->moveLevel(selectedNumber->getNumber(),level);
	else
	levels->moveLevel(selectedNumber->getNumber(),level+1);
	}else if(placement==2){
	//We swap the selected level with the entered level.
	levels->swapLevel(selectedNumber->getNumber(),level-1);
	}

	//And save the change.
	if(packName!="Custom Levels")
	levels->saveLevels(getUserPath(USER_DATA)+"custom/levelpacks/"+packName+"/levels.lst");

	refresh();

	//Clear the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}else if(name=="cfgMoveCancel"){
	//Clear the gui.
	if(GUIObjectRoot){
	delete GUIObjectRoot;
	GUIObjectRoot=NULL;
	}
	}
	}

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