difference between %this, %obj in the scripts

#1 depends on the context ..
but I would hope that
%this represents the script class you are working with and obj represents the actual object that owns the datablock reference

example:

PlayerData::somefunction(%this, %obj)

%this would be the datablock and %obj would be the actual Player class

#2 thanks so let me understand here is a junk of code:

function CrossbowImage::onFire(%this, %obj, %slot)
{
%projectile = %this.projectile;

// Decrement inventory ammo. The image's ammo state is update
// automatically by the ammo inventory hooks.
%obj.decInventory(%this.ammo,1);

...
..
...

what about if I do %obj.decInventory(%obj.ammo,1); instead

thanks,

Gabe

#3 never mind I think the above example doesn't make sense.

Gabe

#4 %obj and %this aren't internal names, they mean wherever they've been put.
The real question you are asking is, what do the different parts of the arguments in onFire mean.

First (%this) is the datablock (the crossbow)
The second (%obj) is the player holding the crossbow
The third is, obviously, the slot.

You can't take %this to mean datablock ALL the time, however. I've seen %this be used to represent an object (not a datablock) in a some function somewhere ( I think it was a collision one)

#5 thanks now it makes more sense...one quick question onFire(...) where does this method get define in the C code. I couldn't find it.

Thanks,

Gabe

#6 yea its a little nasty...
the ShapeBase object has a state array
and this is one of the functions scripted to be called by it