------------------test_state.cpp---------------

void test_state::Update(sf::RenderWindow* window)
{
	if (paused)
	{

		// normalus zaidimas.
	}
	else
	{
		// zaidimas su pause.
	}
}
void test_state::Render(sf::RenderWindow* window)
{
}
void test_state::Destroy(sf::RenderWindow* window)
{
	std::cout << "Destroyed\n";
}

-------------------test_state.h-------------------------------

#pragma once

#include "game_state.h"

class test_state : public tiny_state
{
public:
	void Initialize(sf::RenderWindow* window);
	void Update(sf::RenderWindow* window);
	void Render(sf::RenderWindow* window);
	void Destroy(sf::RenderWindow* window);
private:
	bool paused;


};

----------------game_state.h------------

#pragma once
#include <SFML\Graphics.hpp>

class tiny_state
{
public:
	virtual void Initialize(sf::RenderWindow* window)
	{
	}
	virtual void Update(sf::RenderWindow* window)
	{
	}
	virtual void Render(sf::RenderWindow* window)
	{
	}
	virtual void Destroy(sf::RenderWindow* window)
	{
	}
};

class game_state
{
public:
	game_state()
	{
		this->state = NULL;
	}

	void SetWindow(sf::RenderWindow* window)
	{
		this->window = window;

	}

	void SetState(tiny_state* state)
	{
		if (this->state != NULL)
		{
			this->state->Destroy(this->window);
		}
		this->state = state;
		if (this->state != NULL)
		{
			this->state->Initialize(this->window);
		}
	}
	void Update()
	{
		if (this->state != NULL)
		{
         this->state->Update(this->window);
		}

	}
	void Render()
	{
		if (this->state != NULL)
		{
			this->state->Render(this->window);
		}

	}
	game_state()
	{
		if (this->state != NULL)
		{
			this->state->Destroy(this->window);
		}
	}
private:
	sf::RenderWindow* window;
	tiny_state* state;

};

extern game_state coreState;

-----------Source.cpp----------------------


#include <iostream>

int main()
{
	int num1 = 5;
	int num2 = num2;
	std::cout << num1;
	std::cout << "\n";
	std::cout << num2;
	while (1);

	/*sf::RenderWindow window(sf::VideoMode(800, 600), "Ping");

	tiny_state state = tiny_state();

	coreState.SetWindow(&window);
	coreState.SetState(new test_state());


	// run the program as long as the window is open
	while (window.isOpen())
	{
		// check all the window's events that were triggered since the last iteration of the loop
		sf::Event event;
		while (window.pollEvent(event))
		{
			// "close requested" event: we close the window
			if (event.type == sf::Event::Closed)
				window.close();
		}
		coreState.Update();
		coreState.Render();

	}

	*/
	return 0;
}