Messages

1

General / Re: SFML slows down over time

« on: July 18, 2018, 03:12:23 am »

I ran your code for 5 minutes and the framerate stayed more or less constant.

Okay thanks I'll try and run this on my parents laptop and see if the framerate stay stable! 

2

General / Re: SFML slows down over time

« on: July 18, 2018, 03:09:15 am »

Thanks for the insight Hapax I'll use what you said to hopefully eliminate my bug. 

Not sure why there are square brackets at the beginning and end of your code.

Also the brackets are there because when I added the code = cpp part I must have left in the brackets!

3

General / SFML slows down over time

« on: July 18, 2018, 01:58:09 am »

So I've been using SFML for a little bit now and I've ran into and bug.
After about 6 minutes my game will slow down going from around 1000 - 400 fps down to 100- 20 fps. This causes the player movement to jerk around, going forward and back spontaneously, I don't know if this is due to poorly written code or if its to do with my computer.

Here's the code I wrote:

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

using namespace std;

int main()
{
        sf::RenderWindow window(sf::VideoMode(800, 800), "game");

        sf::Sprite Player;
        Player.setScale(5,5);
        Player.setPosition(400, 400);
       
        sf::Texture Texture;
        Texture.loadFromFile("t.png");
        Player.setTexture(Texture);

        sf::Clock clock;
        sf::Time dt;

        sf::Clock FPSClock;
        sf::Time FPS;

        int Speed = 500;
        sf::Vector2f Pos;
       
        while (window.isOpen())
        {
                sf::Event event;
                while (window.pollEvent(event))
                {
                        if (event.type == sf::Event::Closed)
                                window.close();
                }
       
                sf::Time time = FPSClock.getElapsedTime();

                if (1.0f / time.asSeconds() < 100)
                        cout << 1.0f / time.asSeconds() << endl;

                FPSClock.restart().asSeconds();
                dt = clock.restart();

                Player.setPosition(Pos);

                if (sf::Keyboard::isKeyPressed(sf::Keyboard::W))
                        Pos.y -= Speed * dt.asSeconds();

                if (sf::Keyboard::isKeyPressed(sf::Keyboard::S))
                        Pos.y += Speed * dt.asSeconds();

                if (sf::Keyboard::isKeyPressed(sf::Keyboard::A))
                        Pos.x -= Speed * dt.asSeconds();

                if (sf::Keyboard::isKeyPressed(sf::Keyboard::D))
                        Pos.x += Speed * dt.asSeconds();

                window.clear();

                window.draw(Player);

                window.display();
        }

        return 0;
}]