Messages

1

General / Re: How to make spawn delay to my object

« on: March 15, 2020, 01:29:39 am »

I am a newbie too, but try to use sf::Clock, with function getElapsedTime(), should work
Example code:

#include <SFML/Graphics.hpp>
#include <iostream>
#include <cstdlib>
int main()
{
    sf::RenderWindow window(sf::VideoMode(1024, 600), "Example code");

    sf::RectangleShape shape(sf::Vector2f(128, 75));     // rectangle for ex
    shape.setOrigin(sf::Vector2f(128 / 2.f, 75 / 2.f));
    shape.setPosition(512, 300);
    shape.setFillColor(sf::Color::Black);

    sf::Clock clock;
    float time_interval;

    while (window.isOpen())
    {
        time_interval = clock.getElapsedTime().asSeconds();

        sf::Event event;

        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed) // closing the window
                window.close();
        }

        if (sf::Keyboard::isKeyPressed(sf::Keyboard::Space)) // resetting time
        {
            shape.setFillColor(sf::Color::Black);
            clock.restart();
        }

        if (time_interval > 3) // checking if time is more than 3 seconds
        {
            shape.setFillColor(sf::Color::Blue);
        }

        system("cls");
        std::cout << time_interval << '\n'; // printing time

        window.clear(sf::Color::White);

        window.draw(shape);

        window.display();
    }
}

if you want to see more about that, see some youtube tutorials (like Suraj Sharma's SFML RPG)

2

Window / Re: Mouse wheel scroll detection still not working

« on: March 15, 2020, 01:01:57 am »

SOLVED on https://en.sfml-dev.org/forums/index.php?topic=27005.0

3

System / Re: Mouse wheel scroll detection not working

« on: March 15, 2020, 12:59:23 am »

OK, I solved this by getting sf::Event evnt from the main program class, not using the local one

void Options::CheckEvents(sf::Event &evnt) // evnt is not from 'this' class, but from the main class that controls the whole program
{

    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Escape)) // quit check
    {
        this->quit = true;
    }

    if (evnt.type == sf::Event::MouseWheelScrolled)
    {
        if (evnt.mouseWheelScroll.delta > 0) // moving up
        {
            view->move(sf::Vector2f(0, -this->view_speed * this->dt)); // dt is delta time
        }
        else if (evnt.mouseWheelScroll.delta < 0) // moving down
        {
            view->move(sf::Vector2f(0, this->view_speed * this->dt));  // dt is delta time
        }
    }
}

4

Window / Mouse wheel scroll detection still not working

« on: March 14, 2020, 08:20:58 pm »

I'm trying to make settings state for my game and my mouse scroll detection is not working. I tried to find solution on sfml website, youtube and forums, even this one, but the only answer I got was
"Flush your cout buffer if you want it to print something. << std::endl or << std::flush", and the post is now far away from interest
Here's the function I made to move a view:

void Options::CheckEvents()
{
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Escape))   // quit check
        this->quit = true;

    while(window->pollEvent(this->evnt))
    {
        if (this->evnt.type == sf::Event::MouseWheelScrolled)
        {
            std::cout << "[DEBUG]: mouse wheel scrolled\n"; // this one prints, but not always
                                                            // (for example 4 prints per 10s of scrolling)

            if (evnt.mouseWheelScroll.delta < 0 && view->getCenter().y > WinHeight / 2) // if view center is not too far away
            {
                std::cout << "[DEBUG]: View moved up\n"; // not printing, even when I remove this ^ check
                view->move(sf::Vector2f(0, -view_speed * this->dt));
            }
            if (evnt.mouseWheelScroll.delta > 0 && view->getCenter().y < WinHeight * 2) // if view center is not too far away
            {
                std::cout << "[DEBUG]: View moved down\n"; // not printing, even when I remove this ^ check
                view->move(sf::Vector2f(0,  view_speed * this->dt));
            }
        }
    }
}

And for good news, this code works in main class

5

System / Re: Mouse wheel scroll detection not working

« on: March 13, 2020, 11:49:49 pm »

But how to scroll down the window? And for good news, the view is actually moving by 10 pixels onlywhen mouse position is on special screen position related to window

6

System / Mouse wheel scroll detection not working

« on: March 13, 2020, 04:04:06 pm »

I'm trying to make settings state for my game and my mouse scroll detection is not working. I tried to find solution on sfml website, youtube and forums but my code still doesn't want to work
Here's the function I made to move a view:

void Options::CheckEvents()
{
    if (sf::Keyboard::isKeyPressed(sf::Keyboard::Escape))   // quit check
        this->quit = true;

    while(window->pollEvent(this->evnt))
    {
        if (this->evnt.type == sf::Event::MouseWheelScrolled)
        {
            std::cout << "[DEBUG]: mouse wheel scrolled\n"; // this one prints, but not always
                                                            // (for example 4 prints per 10s of scrolling)

            if (evnt.mouseWheelScroll.delta < 0 && view->getCenter().y > WinHeight / 2) // if view center is not too far away
            {
                std::cout << "[DEBUG]: View moved up\n"; // not printing, even when I remove this ^ check
                view->move(sf::Vector2f(0, -view_speed * this->dt));
            }
            if (evnt.mouseWheelScroll.delta > 0 && view->getCenter().y < WinHeight * 2) // if view center is not too far away
            {
                std::cout << "[DEBUG]: View moved down\n"; // not printing, even when I remove this ^ check
                view->move(sf::Vector2f(0,  view_speed * this->dt));
            }
        }
    }
}

Additionally when I move the code out of pollEvent function the view moves only when I move my mouse

7

Window / Re: Mouse Position not working

« on: March 09, 2020, 10:27:20 pm »

Could this be the reason for using the same names for the window?

Things::Things(sf::RenderWindow* window)
{
    this->window = window;
    this->arial.loadFromFile("Fonts/arial.ttf"); // loading fonts
    this->comicsans.loadFromFile("Fonts/comic.ttf");
    this->ethnocen.loadFromFile("Fonts/ethnocen.ttf");
}

8

Window / Re: Mouse Position not working

« on: March 09, 2020, 10:09:21 pm »

OK, I solved this problem by getting my mouse position from game state, not from the button's parent class.
Now my code looks like this:
   if mouse is on a button:

bool SomeText::isMouseInvaded(sf::Vector2i mouse_position)
{
    if      ( mouse_position.x >= this->text.getPosition().x - textRect.width / 2  &&
              mouse_position.x <= this->text.getPosition().x + textRect.width / 2  &&
              mouse_position.y >= this->text.getPosition().y - textRect.height / 2 &&
              mouse_position.y <= this->text.getPosition().y + textRect.height / 2 &&
              this->if_halfed )                                                                  return true; //if_halfed means if origin is set in the middle or in the top-left corner
    else if ( mouse_position.x >= this->text.getPosition().x                                   &&
              mouse_position.x <= this->text.getPosition().x + textRect.width                  &&
              mouse_position.y >= this->text.getPosition().y + textRect.top                    &&
              mouse_position.y <= this->text.getPosition().y + textRect.height + textRect.top  &&
              !this->if_halfed)                                                                  return true;
    else                                                                                         return false;
}

   and a fragment from function checking that event:

if (this->things["QUIT_BUTTON"]->isClicked_Left(mPosWindow))    // quitting the game
        this->quit = true;

9

Window / Re: Mouse Position not working

« on: March 09, 2020, 06:35:31 pm »

I used the debugger, and I got
#0 0x6e185ab0   sf::Window::getSystemHandle(this=0xbaadf00d) (D:\Programming\C++\Releases\_Sources\SFML\src\SFML\Window\Window.cpp:390)
error (segment fault)

Also deleted all pointers to window, but it still doesn't want to work

10

Window / Mouse Position not working

« on: March 08, 2020, 09:13:07 pm »

I'm working on a game and have a problem with mouse position relative to screen, window and view

void Things::UpdateMousePos() // parent class to objects like buttons, texts etc.
{
    this->mPosScreen = sf::Mouse::getPosition(); // working on fullscreen
    this->mPosWindow = sf::Mouse::getPosition(); // not working
    this->mPosView = this->window->mapPixelToCoords(sf::Mouse::getPosition(*this->window)); // crashing the game
}

I've searched quite a lot, but even the view tutorial on sfml site hasn't resolved it