Hi,
I have a problem with processing keystokes in osg-viewer window.
I would like to tell about this problem and propound resolution.
First i need to explain what is problem i have:
Assume that you want process ASDW keydown like as in Counter-Strike and F to
flash light.
that you need to do?
you need to create something like
Code:
case osgGA::GUIEventAdapter::KEYDOWN:
switch(ea.getKey())
{
case 'w':
// go forward
break;
...
}
It will work until you need to add crouch.
let's see what will be in this case:
after key is pressed there is message recieved
Code:
case WM_KEYDOWN :
case WM_SYSKEYDOWN :
their handlers do the following:
adaptKey(wParam, lParam, keySymbol, modifierMask);
1. getting a virtual key code
2. converting virtual key code to symbol code
then there is a call of
Code:
getEventQueue()->keyPress(keySymbol, eventTime);
with GUIEventAdapter created inside it, what contain keySymbol
i.e. now to turn flashlight we have to do steps below:
Code:
case osgGA::GUIEventAdapter::KEYDOWN:
switch(ea.getKey())
{
case 'F':
case 'f':
case 'f'-0x40 : // for processing with CTRL
// do something
}
as we don't know whick key is pressed by user, we have to include all
possibilities:
I suggest using virtual keys codes both with current key handles, as the
following:
Code:
adaptKey(wParam, lParam, keySymbol, modifierMask, virtualKey);
...
getEventQueue()->keyPress(keySymbol, virtualKey eventTime);
What do you think about it?
Thank you!
Cheers,
Alexander
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=35850#35850
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