Messages

1

General / Re: sf::Color member not updating on sf::CircleShape draw

« on: February 04, 2021, 09:04:31 pm »

Right after the Update() function gets called, I call the Draw() function which calls the DrawSight() function. The Entity class has quite a few variables, and functions which would have been quite a lot of code if I posted it all.

In the Entity class, I have a private variable

sf::Color m_SightColor;

which by default is (Red: 255, Green: 255, Blue: 255, Alpha: 255). I have setters/getter for this variable, and when I return the sf::CircleShape shape; to draw, I set the color of the shape with the GetSightColor() function. I tried this using the private member on its own without the function (m_SightColor) and it yielded the same result: (Red: 255, Green: 255, Blue: 255, Alpha: 255); even though I change it when the mouse moves over it.

The log shows that it changes, but it somehow resets after. I tried passing the color not as a reference to the setter to copy it, but it still resets. Would any other functions help you understand what's going on that I should show?

2

General / sf::Color member not updating on sf::CircleShape draw

« on: February 03, 2021, 09:06:57 pm »

I am trying to change the color of a circle when the mouse is over the circle. I am already successfully detecting when the mouse is over the shape.

// Entity.h:
sf::Color GetSightColor() const
{
    std::cout << "Get m_SightColor: ";
    PrintColor(m_SightColor);
    return m_SightColor;
}
void SetSightColor(const sf::Color& val)
{
    m_SightColor = val;
    std::cout << "Set m_SightColor: ";
    PrintColor(m_SightColor);
}

// Main.cpp:
void Update()
{
...
if (entity.IsInSight(glm::vec2(mouse.x, mouse.y)))
{
    entity.SetSightColor(sf::Color(0, 0, 0, 0));
    std::cout << "Mouse Over Color: ";
    PrintColor(entity.GetSightColor());
} } }

// Entity.cpp:
sf::CircleShape Entity::DrawSight() const
{
    std::cout << "Draw with color: ";
    PrintColor(m_SightColor);
    float radius = GetSightSize();
    sf::CircleShape shape;
    shape.setPosition(GetLoc().x, GetLoc().y);
    shape.setRadius(radius);
    shape.setOrigin(radius, radius);
    shape.setFillColor(GetSightColor());
    return shape;
}
 

The problem is that the circle stays white when the mouse is over it. I logged the colors to make sure the color changes:

Draw with color: (Red: 255, Green: 255, Blue: 255, Alpha: 255)
Get m_SightColor: (Red: 255, Green: 255, Blue: 255, Alpha: 255)
Set m_SightColor: (Red: 0, Green: 0, Blue: 0, Alpha: 0)
Mouse Over Color: Get m_SightColor: (Red: 0, Green: 0, Blue: 0, Alpha: 0)
(Red: 0, Green: 0, Blue: 0, Alpha: 0)
Draw with color: (Red: 255, Green: 255, Blue: 255, Alpha: 255)
Get m_SightColor: (Red: 255, Green: 255, Blue: 255, Alpha: 255)

I don't see what I'm doing wrong. Is this my mistake or a bug?

Specs: Windows 10 x64
SFML: 2.5.1