if(Keyboard::isKeyPressed(Keyboard::Up)){
                    s.move(0,-3);
                }
                if(Keyboard::isKeyPressed(Keyboard::Right)){
                    s.move(3,0);
                }
                if(Keyboard::isKeyPressed(Keyboard::Down)){
                    s.move(0,3);
                }
                if(Keyboard::isKeyPressed(Keyboard::Left)){
                    s.move(-3,0);
                }