Messages

1

System / What is wrong with my self made frame rate limit code?

« on: December 20, 2019, 08:05:49 am »

Using window.setFramerateLimit(60), I get consistent FPS between 58-62, but I wanted to do things myself to be sure I understand how it works, so I made this code here: (notice the code in the loop function at the bottom.)

class SystemClock
        {
        public:
                void establishFrameTime()
                {
                        frametime = (double)frameClock.restart().asMicroseconds()/e6;

                        if (tempavgFrameTime == 0.0)
                        {
                                tempavgFrameTime = frametime;
                        }
                        else
                        {
                                tempavgFrameTime = (tempavgFrameTime + frametime) / 2.0;
                        }
                        accumulatedFrameTime += frametime;
                        if (accumulatedFrameTime >= 1.0)
                        {
                                avgFrameTime = tempavgFrameTime;
                                FPS = 1 / avgFrameTime;
                                accumulatedFrameTime = 0.0;
                                tempavgFrameTime = 0.0;
                        }
                }

                double const fixedTimeStep{ 1.0 / 60.0 };
                double const e6{ 1000000 };
                sf::Clock tickClock;
                sf::Clock frameClock;
                sf::Clock timeClock;

                // time data
                double FPS{ 0.0 };
                double frametime{ 0.0 };
                double avgFrameTime{ 0.0 };

        private:
                double tempavgFrameTime{ 0.0 };
                double accumulatedFrameTime{ 0.0 };
        };


        void loop()
        {
                while (systemWindow.window.isOpen())
                {
                        systemClock.establishFrameTime();
                        if (systemClock.frametime < systemClock.fixedTimeStep)
                        {
                                sf::Int64 remainder{ (sf::Int64)((systemClock.fixedTimeStep - systemClock.frametime) * systemClock.e6)};
                                sf::sleep(sf::microseconds(remainder));
                        }
                        update();
                        render();
                }
        }
 

When I run this, the framerate fluctuates between 80-100 sometimes spiking to 160. Why are my frames running too fast, am I not using sf::sleep correctly? Or is it my IDE im running visual studio in debug mode(but then why would there be a difference between this and window.setframerateLimit()

2

General / Re: What is a good way to handle new line characters? \n

« on: April 26, 2019, 10:28:28 pm »

Is it possible to add a cursor without making your own geometry? I couldn't figure it out using the standard sf:: classes.

I am going through your code and the sf::Text code and trying to learn for my own project, I may have other questions about it I hope you don't mind.

3

General / Re: What is a good way to handle new line characters? \n

« on: April 25, 2019, 12:35:31 am »

This is great thanks. I want to program my own because I need the practice. I'll definitely follow the Selba Tutorials.

Right now I am struggling to think how should I handle input into my window.

I currently am using a singleton for my AppWindow and I when I handle the sf events I set std::bitsets for each key press.
In my console.update I check the bitsets like this:
AppWindow::instance().get_IsKeyPressed().any()

I don't want to couple my console to my AppWindow singleton class so this sucks.

@FRex : I see that your ConsoleInput takes an sf::event. How and where do you pass the event to the function?
https://github.com/FRex/LuaConsole/blob/master/src/LuaConsole/LuaSFMLConsoleInput.cpp

auto const keybits = AppWindow::instance().get_IsKeyPressed();
        if (keybits.none())
        {
                return;
        }
        if (keybits[sf::Keyboard::Key::BackSpace])
        {
                std::cout << "backspace\n";
        }
        if (keybits[sf::Keyboard::Key::Delete])
        {
                std::cout << "delete\n";
        }
        if (keybits[sf::Keyboard::Key::Enter])
        {
                m_model.add_to_session(m_model.get_promptLine());
                m_model.reset_promptLine();
        }
 

I also have this nasty stuff.

4

General / Re: What is a good way to handle new line characters? \n

« on: April 11, 2019, 01:48:27 am »

Ahh! I see yes it does work with \n. I was expecting it to work with '\r' (carriage return) as well, since that is what I've been getting from event.text.unicode when I press enter.

I wrote a simple if statement to turn \r into \n and everything is working fine. I ditched the vector of substrings.

So all that stuff you wrote was just to have multi color text? That is pretty cool. I might have to steal it if I continue with this.

5

General / What is a good way to handle new line characters? \n

« on: April 10, 2019, 09:30:09 pm »

Hi, I'm making a console window with SFML and I've reached my first uncertainty: new line characters.

I want a new line character to create a new line. There seems to be no function in sf::Text to do this automatically.

So, with efficiency in mind, should I create a loop for each sub-string delineated by new line characters and call RenderWindow::Draw on each sub-string? or is there a better way.

https://github.com/FRex/LuaConsole/blob/master/src/LuaConsole/LuaSFMLConsoleView.cpp

^^This guy doesn't even use sf::Text. He creates his own vertex thingies using the glyphs from the font.

What is the recommended approach here?

Edit:
Here is what I have now(it functions but seems wasteful):

        {
                float lineSpacing = sessionText.getCharacterSize() + sessionText.getLineSpacing();
                int i{ 0 };
                for (std::string const & substring : model.get_sessionString())
                {
                        sf::Transform t;
                        t.translate(0.f, lineSpacing * i);
                        sessionText.setString(substring);
                        AppWindow::instance().getAppWindow().draw(sessionText, t);
                        i++;
                }
        }