User without a working GPU from the AddOn can not have a working GPU??
They obviously can't, since there's no such system in FSX. It can only be made with some kind of hack, like the "eternal" battery feature in FSUIPC.
You can always connect ( turn on ) the GRD-Power ( provided by the GPU ).
We cannot "connect" anything, because such system doesn't exist by default.
WHICH IS WHY, we must find a way to support different 3rd party addons, to provide power "universally" OR connecting through their own system.
But again, 3rd party airplanes that DO simulate ground power, usually have their own visible vehicles.
If the Beacon/ACL is off or the Brakes are not set the GPU will not appear.. as a Tip. Because then the GRD Power is not working. :-)
I don't know what you are trying to say here. It seems you got it backwards: it's not that we should know WHEN to display a FAKE GPU "because there's no power". The issue is to command, with GSX, a GPU that will actually supply power.
Why can the loading/unloading process not load/unload the Airplane ??
Because there's no way to know from FSX what a loading station means. It only has a name, but there's no way to reliably know what it represents. It might be a whole cargo bay area, but it can also be a single person (like "the pilot" ). This, of course, has been discussed many times already too.
You can, as it Topcat and some other Tools do, load/unload the Aircraft via FSUIPC/SimConnect
So, if the empty Dollie come to unload the Aircraft, subtract ( lets say ) 20kg from the weight of the unloaded Station. That works with every Aircraft, also with PMDG or other AddOn Aircrafts.
Why you keep insisting that Topcat "works with every Aircraft", when you were ALREADY proven wrong about it, here ?
http://www.fsdreamteam.com/forum/index.php/topic,9093.msg73787.html#msg73787If we tried to change the airplane weight in real time, the balance and the height will change, so the GSX vehicles will not match it the doors anymore so, it will be very messy to fix it, because we would have to estimate how much the GSX vehicles (that don't even have a "flight model") should compensate for it.
Don't you think we already THOUGHT (and TRIED IT) already ? And yes, it CAN be seen, and it's quite annoying.
Ok, the ASU is maybe a Problem, because not every airplane understand that the Air Pressure is given to start the Engines. Maybe, but i am not sure here.
It's the same as a GPU, no default system exists. And every 3rd party airplane does it differently.
WHICH IS WHY, we still don't have a GPU. As explained, so many times already...