Hi guys,
Im attempting to add a groundspeed property , but need some assistance if
anyone feels up to it...
The logical place seems to be /source/FDM/flight.cxx , so I added this :
fgTie("/velocities/groundspeed-kt", this,
&FGInterface::get_V_ground_speed,
&FGInterface::set_V_ground_speed,
false);
void FGInterface::set_V_ground_speed(double v) {
v_ground_speed = v;
return v *
}
and the appropriate modifications to flight.hxx .This works great, I now get a
/velocities/groundspeed-kt, but from further poking and prodding , I think it
returns feet per second ....
The property is showing nearly double airspeed ....
Yes my class inexperience is showing :)
Should I have this instead ?
void FGInterface::set_V_ground_speed(double v) {
gspd = v * SG_FEET_TO_METER * 3600 * SG_METER_TO_NM;
v_ground_speed = gspd;
return gspd;
}
My difficulty is understand if FGTie() outputs the result directly to the
property tree ...
Thanks,
Syd
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