I'm simply trying to have it so my sprite moves smoothly across the screen.
It stutters. I tried reading the FAQ about this but I'm still trying to process why it's stuttering.
I also tried limiting the windows to 60FPS and it still stutters, while also disabling/enabling vertical sync.
They all seem to produce the same stuttering result.
#include <SFML/Graphics.hpp>
#include <iostream>
using namespace std;
int main()
{
sf::RenderWindow window(sf::VideoMode(640, 480), "SFML works!");
window.setFramerateLimit(60);
sf::CircleShape shape(10.f);
shape.setFillColor(sf::Color::Green);
float x = 0.0f;
float y = 0.0f;
float hspeed = 50.0f;
float vspeed = 50.0f;
sf::Clock clock;
sf::Texture texture;
if (!texture.loadFromFile("test_sprite.png"))
{
return EXIT_FAILURE;
}
sf::Sprite sprite;
sprite.setTexture(texture);
while (window.isOpen())
{
sf::Event event;
while (window.pollEvent(event))
{
if (event.type == sf::Event::Closed)
window.close();
}
float delta = clock.restart().asSeconds();
//cout << "delta: " << delta << endl;
x+= hspeed * delta;
y+= vspeed * delta;
sprite.setPosition(x, y);
window.clear();
window.draw(sprite);
window.display();
}
return 0;
}
Also on a side note, why is there a value greater than 0 being outputted by this line:
delta = clock.restart().asSeconds();
If you restart the clock, shouldn't it be 0? When I cout the value it's usually 0.001-something. But didn't we restart the clock making it 0?
