[Pyobjc-dev] More wiimote wrapping fun!

[John H. <joh...@gm...>]

I've been following the discussions concerning the wiimote wrapper  
with interest as I have this insane dream of integrating head  
tracking into my laser/pySight controlled video game in order to make  
it even sillier than it currently is.  Alas, I have encountered  
problems along the way.

Working with some people that I've found on this list and the  
darwiinremote project I've got something that works somewhat for  
button presses and the irPointMovedX_Y_ method.  My problem is that I  
want to capture the raw IR data, and this portion of the code seem to  
not work.

Here is the relevant information from the most recent WiiRemote.h file:


typedef struct {
	int x, y, s;
} IRData;

@interface NSObject (WiiRemoteDelegate)
- (void) rawIRData: (IRData[4]) irData;




in python I have the following:

WiiRemoteDelegate = objc.informal_protocol(
     "WiiRemoteDelegate",
     [
         objc.selector(None,
             selector="irPointMovedX:Y:",
             signature="v@:ff", isRequired=False),
         objc.selector(None,
             selector="rawIRData:",
             signature="v@:[4{IRData=iii}]", isRequired=False)
...

     def rawIRData_(self, *posargs, **kwdargs):
     #def rawIRData_(self, irData):
         #print 'rawIRData: %s' % (irData,)
         for x in posargs:
             print '%x' % (x)


No matter what I do I get the same data in my delegate, formatted as  
hex here:
  1322f2c
       13
bfffe350
  1313b20
  1313b00
bfffe3a0
        0
  154c396
94aa0ca4
  142b9c8
  1322ed0
       13

This looks to me like I'm not getting the ints that I would expect  
but that I'm getting references to the IRData struct or something.

Is there something wrong with selector and/or signature?  Do I need  
to add method encodings to the signature?  What would a properly  
encoded signature look like?  If these are pointers is there a way to  
dereference them in python?

I've been banging my head against this for more time than I'd like to  
admit and keep getting either bus errors or junk data.

Thanks!
John