Messages

1

Graphics / Re: Can't draw shapes defined outside the while(window.isOpen()) loop

« on: February 23, 2022, 03:13:44 am »

Many thanks! It works now, though I still cannot work out why.

2

Graphics / Re: Can't draw shapes defined outside the while(window.isOpen()) loop

« on: February 22, 2022, 11:43:11 am »

Thanks, here's the class definition:

struct Position
{
        float x;
        float y;

        Position(float x = 0.f, float y = 0.f) : x(x), y(y)
        {
        }
};

class SquareComponent : public sf::RectangleShape
{
private:
        Position loc;

public:
        const float SideLen = 10.f;
        SquareComponent(Position position = {});
        void setLoc(Position position = {});
};

SquareComponent::SquareComponent(Position position) : RectangleShape(sf::Vector2f(SideLen, SideLen)), loc(position)
{
        setPosition(loc.x, loc.y);
        setFillColor(sf::Color::White);
}

void SquareComponent::setLoc(Position position)
{
        loc = position;
        setPosition(loc.x, loc.y);
}

And I used the built-in shapes (CircleShape, etc.) last time I tried SFML.

3

Graphics / [Solved] Can't draw shapes defined outside the while(window.isOpen()) loop

« on: February 22, 2022, 10:11:46 am »

Hello, I'm new to SFML (and C++, I'm a first-year university student). I defined a custom shape outside of the main loop and it wouldn't draw. But, when I define that inside the loop, it works very well.
What's wrong?
(SquareComponent is something I defined myself. I have tried SFML before, but everything was OK that time.)

int main(void)
{
        sf::RenderWindow window(sf::VideoMode(WindowWidth, WindowHeight), "SFML", sf::Style::Close | sf::Style::Titlebar);

        // SquareComponent thing1({14.f,11.f});

        while (window.isOpen())
        {
                sf::Event event;

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

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

                SquareComponent thing1({14.f,11.f}); // if defined outside this loop (line 31), it won't draw!
                window.draw(thing1);
               
                window.display();
        }
}