Erratic mouse cursor with flycam OSX

Troubleshooting
1

Hello everyone, i’m new here and this is my first question.

Has anyone been able to solve this problem:
I’m using the flyCam with setDragToRotate(true), however I also want to keep the cursor visible and use it for clicking on objects as well.

Whenever I click, the mouse cursor jumps after I release the button. It seems like quite a few OSX users have reported this over the years, but does anyone know of any solutions?

Note: disabling the flyCam and inputManager.setCursorVisible(true) works fine, however I lose setDragToRotate functionality.

Thanks

2

bump…

If i figure it out i’ll try to share the results. So far i’ve tried using lwjgl3, but that presents other issues on OSX. I may end up writing a RawInputListener to do a custom flyCam. Any who if anyone knows the real answer to my question any help would be appreciated.

3

Well, that would be one way to debug it, at least.

I don’t know why Mac specifically would cause this issue, though. It may be that writing your own finds out why.

4

I’ve traced the problem to org.lwjgl.input.Mouse.java in the setGrabbed method. Probably where its calling reset().
http://grepcode.com/file/repo1.maven.org/maven2/org.lwjgl.lwjgl/lwjgl/2.9.3/org/lwjgl/input/Mouse.java

To fix it for now create a class and extend the InputManager and either override:

private void onMouseButtonEventQueued(MouseButtonEvent evt) {
    int hash = MouseButtonTrigger.mouseButtonHash(evt.getButtonIndex());
    invokeActions(hash, false); // replacing invokeActions(hash, evt.isPressed());
    invokeTimedActions(hash, evt.getTime(), evt.isPressed());
}

Or you can override and remove mouse.setCursorVisible:

public void setCursorVisible(boolean visible) {
    if (mouseVisible != visible) {
        mouseVisible = visible;
        mouse.setCursorVisible(mouseVisible);
    }
}