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Help => General => Topic started by: Yours3lf on July 16, 2011, 11:46:20 pm

Title: mouse warping in sfml
Post by: Yours3lf on July 16, 2011, 11:46:20 pm

Hi,

I want to warp the mouse, so that the user can move the camera in FPS style.
in SDL there is a function SDL_WarpMoues() which does this. Is there such thing in SFML? Or how is it done in SFML?

Best regards,
Yours3!f

Title: mouse warping in sfml
Post by: Hiura on July 17, 2011, 12:01:02 am

SFML 1.6 : sf::Window::SetCursorPosition (http://www.sfml-dev.org/documentation/1.6/classsf_1_1Window.php#a369d1764893c6fde8979fcf04142dc55)
SFML 2 : See sf::Mouse (https://github.com/SFML/SFML/blob/master/include/SFML/Window/Mouse.hpp) (documentation not yet uptodate)

Title: mouse warping in sfml
Post by: Yours3lf on July 17, 2011, 12:15:55 am

wow, ok, I only checked the docs here on sfml-dev.org...
is the one on github better?

anyways thank you!

Title: mouse warping in sfml
Post by: Hiura on July 17, 2011, 12:45:56 am

Depending on which version you use (1.6 or 2 ?) you can use sf::Window::SetCursorPosition or sf::Mouse::SetPosition.

I just checked the doxygen documentation for 2.0 on this site and realized that it wasn't up to date so I put the link to the source code. If you're using 2.0 version then I recommend you to build the documentation while compiling SFML. This way you have an local up-to-date version of the documentation.

Title: mouse warping in sfml
Post by: Yours3lf on July 17, 2011, 06:29:58 pm

Thanks, I'm going to build the docs definitely. I'm using version 2.

Title: mouse warping in sfml
Post by: Yours3lf on July 22, 2011, 09:58:09 pm

ok, I'm having a little bit of problem with this function.
It seems to warp my mouse to:
x coord: middle of the screen
y coord: middle of the screen - mouse height

that is for a 1280x720 window I get the mouse position 640, 340. I don't know if it is an SFML bug or I've done something wrong or it is just the windowing system (Kubuntu 11.04/ KDE), but it is clear that it warps my mouse to that location, because if I move the mouse in a way that in 33 ms (one frame) it moves more than 20-30 pixels then eventually my camera goes down as opposed to always going upwards because of that.

Did anyone have issues like that?

or how can I get the height of the cursor so that I can warp it to the correct position?

Best regards,
Yours3!f

Title: mouse warping in sfml
Post by: Yours3lf on July 23, 2011, 09:25:22 am

I think I solved the problem, I just needed to use
sf::Mouse::SetPosition(pos, window)
instead of
sf::Mouse::SetPosition(pos)

where window was the main window I created.
It seems to set the cursor position to the right location now.