sfml

#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>
#include <iostream>

using namespace std;
using namespace sf;

int main()
{

  const int width = 800;
  const int height= 600;


 //Window rendering
    sf::Vector2f screenDimensions(800, 600);
    sf::RenderWindow window(sf::VideoMode(screenDimensions.x, screenDimensions.y), "SFML game");

    window.setFramerateLimit(60);

    sf::Clock frametime;

    //in-game screen view
       sf::View view;

    view.reset(sf::FloatRect(0, 0, screenDimensions.x, screenDimensions.y));
    view.setViewport(sf::FloatRect(0, 0, 1.0f, 1.0f));

    sf::Vector2f position(screenDimensions.x / 2, screenDimensions.y / 2);


      sf::Texture texture;
if (!texture.loadFromFile("PlayerShip.png"))
{
    // error...
}


       Texture texture2;
    if (!texture.loadFromFile("PlayerShip2.png"))
{
    // error...
}
       Texture bgtexture;
       sf::Sprite bgsprite;

    if(!bgtexture.loadFromFile("BG.png"))
    {
        //error
    }

    bgsprite.setTexture(bgtexture);
    bgsprite.setScale(9.0f, (float)screenDimensions.y / bgtexture.getSize().y);

    Sprite shape;
    shape.setTexture(texture);
    shape.setTextureRect(sf::IntRect(0, 0, 100, 83));
    shape.setPosition(400.f,40.f);


    RectangleShape projectile(sf::Vector2f(40., 40.f));
    projectile.setFillColor(sf::Color::Black);



        Font font;
    if (!font.loadFromFile("HelveticaNeue-UltraLight.otf"))
        return EXIT_FAILURE;

     Text title("Shooter",font,50);
    title.setPosition(width/2-title.getGlobalBounds().width/2,100);
    title.setColor(Color::Blue);

    Text start("Play",font,30);
    start.setPosition(width/2-start.getGlobalBounds().width/2,200);
    start.setColor(Color::Green);

    Text start1("Options",font,30);
    start1.setPosition(width/2-start.getGlobalBounds().width/2,300);
    start1.setColor(Color::Red);

    Text start2("Quit",font,30);
    start2.setPosition(width/2-start.getGlobalBounds().width/2,400);
    start2.setColor(Color::Black);


    sf::Vector2f speed (3.f, 3.f);

    bool holding = true;

    int GameState;

    enum states {INTRO, PLAYING, LOST};

    GameState = {INTRO};

    while (window.isOpen())
    {
        window.clear(Color::White);
        switch(GameState)
        {
            case INTRO:
                window.draw(title);
                window.draw(start);
                window.draw(start1);
                window.draw(start2);
                break;
            case PLAYING:
                window.setView(view);
                window.draw(shape);
                break;
        }
        window.display();

        sf::Event event;

        while (window.pollEvent(event))
        {
            if ( (event.type == Event::Closed) ||
            ((event.type == Event::KeyPressed) && (event.key.code==Keyboard::Escape)) )
                window.close();
            else
            if ((event.type == Event::KeyPressed) && (GameState == INTRO))
                GameState=PLAYING;
        }

        if (GameState!=PLAYING)
            continue;

         float dt = frametime.restart().asSeconds();

         if(speed.x > 6.f)
            speed.x -= 1.f;
        else if(speed.x < -6.f)
            speed.x += 1.f;
        else
            speed.x = 0.f;

        // Adjust vertical speed
        if(speed.y > 6.f)
            speed.y -= 1.f;

           shape.setPosition(shape.getPosition().x + speed.x * dt, shape.getPosition().y + speed.y * dt);

           if(sf::Keyboard::isKeyPressed(sf::Keyboard::S))
            speed.y = 300;
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::A))
            speed.x = -290;
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::D))
            speed.x = 290;
        else if(sf::Keyboard::isKeyPressed(sf::Keyboard::W))
            speed.y = -300;


              if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right))
              shape.rotate( 200 * dt);
              if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left))
              shape.rotate(- 200 * dt);



        if(sf::Keyboard::isKeyPressed(sf::Keyboard::Space))
            window.draw(projectile);

        position.x = shape.getPosition().x + 10 - (screenDimensions.x / 2);
        position.y = shape.getPosition().y + 10 - (screenDimensions.y / 2);


        if(position.x < 0)
            position.x = 0;
        if(position.y < 0)
            position.y = 0;




        view.reset(sf::FloatRect(position.x, position.y, screenDimensions.x, screenDimensions.y));

        }

        return 0;
    }