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#include <iostream>
#include <memory>
#include <cstring>
#include <cstdlib>
#include <sys/time.h>
#include <SFML/Graphics.hpp>
#include "object_base.h"
#include "global.h"
#include "library.h"
#include "build/objects.h"
#include "build/sprites.h"

using namespace std;


__attribute__((unused))
static Object* makeobjectbyname(int x,int y,const char *name){

#define X(objname) if(strcmp(name,#objname)==0)return new objname(x,y);
OBJECT_CLASSES_XLIST
#undef X

	return nullptr; //no object with that name
}


Global global;

sf::RenderWindow window;


void applyObjectChanges(){
	set<Object*> seen;
	for(Object *obj : global.objects_todelete){
		if(seen.insert(obj).second){
			delete obj;
			global.objects.erase(obj);
		}
	}
	global.objects_todelete.clear();
}

void applyObjectChanges(set<Object*>::iterator &it){
	bool incremented=false;
	set<Object*> seen;
	for(Object *obj : global.objects_todelete){
		if(seen.insert(obj).second){
			delete obj;
			if(it!=global.objects.end()&&*it==obj){
				++it;
				incremented=true;
			}
			global.objects.erase(obj);
		}
	}
	global.objects_todelete.clear();
	if(!incremented){
		++it;
	}
}


void eventCycle(){
	sf::Event event;
	while(window.pollEvent(event)){
		if(event.type==sf::Event::Closed){
			window.close();
			return;
		} else if(event.type==sf::Event::KeyPressed){
			if(event.key.code==sf::Keyboard::Escape){
				window.close();
				return;
			}
		}
	}

	for(set<Object*>::iterator it=global.objects.begin();
			it!=global.objects.end();
			applyObjectChanges(it)){
		(*it)->step();
	}

	window.clear(sf::Color::White);

	for(set<Object*>::iterator it=global.objects.begin();
			it!=global.objects.end();
			applyObjectChanges(it)){
		(*it)->draw();
	}

	window.display();
}

int main(void){
	struct timeval tv;
	gettimeofday(&tv,nullptr);
	srand(tv.tv_sec*1000000+tv.tv_usec);

	window.create(sf::VideoMode(640,480),GAME_NAME);
	window.setVerticalSyncEnabled(true);

	instance_create<obj_control>(0,0);
	applyObjectChanges();

	while(window.isOpen()){
		eventCycle();
	}

	for(set<Object*>::iterator it=global.objects.begin();
			it!=global.objects.end();
			applyObjectChanges(it)){
		instance_destroy(*it);
	}
}

/*static Fl_Window_draw *window;



Fl_Window_draw::Fl_Window_draw(int w,int h,const char *title=0)
	:Fl_Window(w,h,title){}
Fl_Window_draw::Fl_Window_draw(int x,int y,int w,int h,const char *label=nullptr)
	:Fl_Window(x,y,w,h,label){}

void Fl_Window_draw::draw(void){
	fl_rectf(0,0,w(),h(),FL_WHITE);
	fl_color(FL_BLACK);
	int i;
	for(i=0;i<(int)global.objects.size();i++){
		global.objects[i]->draw();
	}
}


void stepcallback(void*){
	int i;
	for(i=0;i<(int)global.objects.size();i++){
		global.objects[i]->step();
	}
	window->redraw();
	Fl::repeat_timeout(1.0/30,stepcallback);
}

int main(int argc,char **argv){
	struct timeval tv;
	gettimeofday(&tv,nullptr);
	srand(tv.tv_sec*1000000+tv.tv_usec);
	window=new Fl_Window_draw(640,480,GAME_NAME);

	global.objects.push_back(makeobjectbyname(0,0,"obj_control"));
	global.objects[0]->create();

	window->end();
	Fl::visual(FL_RGB);
	window->show(argc,argv);
	Fl::add_timeout(1.0/30,stepcallback);
	int ret=Fl::run();
	for(shared_ptr<Object> p : global.objects){
		p->destroy();
	}
	return ret;
}*/