Question

I need to find the equivalent of SetFromRect() for SFML 2.0. I’m using it in a camera class where I am updating the position of the rectangle where the sprite can move freely. Once it reaches the middle of the screen it will start scrolling the camera by re-updating the rectangle with the new co-ordinates.

void Camera::Update(int x, int y)
{
    cameraX = -(ScreenWidth / 2) + x;
    cameraY = -(ScreenHeight / 2) + y;

    std::cout << "cameraX: " << cameraX << std::endl;
    std::cout << "cameraY: " << cameraY << std::endl;

    if(cameraX < 0)
        cameraX = 0;
    if(cameraY < 0)
        cameraY = 0;

    CameraPosition.setViewport(sf::FloatRect(cameraX, cameraY, cameraX + ScreenWidth, cameraY + ScreenHeight));
    std::cout << "cameraX + ScreenWidth: " << cameraX + ScreenWidth << std::endl;
    std::cout << "cameraY + ScreenWidth: " << cameraY + ScreenWidth << std::endl;
}

That all works fine except for:

CameraPosition.setViewport(sf::FloatRect(cameraX, cameraY, cameraX + ScreenWidth, cameraY + ScreenHeight));

It’s obtaining all the right numbers but I think it’s the wrong function for it.

I did try reset() but it didn’t work either.

EDIT:

The correct code is:

CameraPosition.reset(sf::FloatRect(cameraX, cameraY, ScreenWidth, ScreenHeight));
CameraPosition.setViewport(sf::FloatRect(0,0,1,1));

Answer 1

SFML 2.0 rectangle types were changed from (left, top, right, bottom) to (left, top, width, height). I make that mistake too all the time.

To move the camera around all you need to do is to move the sf::View. In your code that is as simple as calling CameraPosition.setCenter(x, y);.