#include <SFML/Graphics.hpp>
#include <iostream>
#include <time.h>
#include <math.h>
using namespace std;
using namespace sf;

sf::RenderWindow window(sf::VideoMode(300, 800), "Space Invaders");
float pi = 3.14159;

class spelare
{
    Vector2f pos, dim;
    RectangleShape skepp, kanon;
    clock_t t0;
    float v, vdir;
public:
    spelare(float lengd, float bredd, float xpos, float ypos)
    {
        dim.x = lengd; dim.y = bredd;
        pos.x = xpos; pos.y = ypos;
        v = 0; vdir = 0;
        skepp.setSize(dim);
        skepp.setOrigin(dim.x * 2 / 5, dim.y / 2);
        kanon.setOrigin(dim.x * 2 / 5, dim.y / 2);
        kanon.setSize(Vector2f(dim.x / 5, dim.y));
        kanon.setFillColor(Color::Red);
    }
    void uppdatera()
        {
            clock_t dt = clock() - t0;
            Vector2f vrp = pos;
            vrp.x += 0.7*dim.x*cos(vdir*pi / 180);
            vrp.y += 0.7*dim.x*sin(vdir*pi / 180);
            t0 += dt;
            pos.x += v * cos(vdir*pi / 180)*dt;
            pos.y += v * sin(vdir*pi / 180)*dt;
            skepp.setPosition(pos);
            skepp.setRotation(vdir);
            kanon.setPosition(vrp);
            kanon.setRotation(vdir);
        }
    void rita()
    {
        window.draw(skepp);
        window.draw(kanon);
    }
    void acc(float a)
    {
        v += a;
    }
};

int main()
{
    clock_t t0, t1;
    spelare skepp(85, 35, 200, 200);
    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
			if (event.type == sf::Event::Closed)
				window.close();
			else if (event.type == sf::Event::KeyPressed)
				if (event.key.code == sf::Keyboard::Right)
				{
					skepp.acc(0.001);
				}
				else if (event.key.code == sf::Keyboard::Left)
				{
					skepp.acc(-0.001);
				}
				else
				{
					skepp.acc(0);
				}
        }
        window.clear();
        skepp.uppdatera();
        skepp.rita();
        window.display();
    }
}