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fgdata/Aircraft/Instruments-3d/FG1000/Nasal/Interfaces/GenericFuelPublisher.nas
Stuart Buchanan 5080ae8c99 FG1000: Fuel Publisher and PanDown bug-fix
Previously the GenericFuelPublisher would barf if tank contents
weren't defined properly with numbers.

Also the XML and .ac files were inconsistent in their use of PANDown
vs PanDown.

Both spotted by Mark JOSEPH (ePilot). Now fixed.
2020-10-06 21:58:18 +01:00

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2.6 KiB
Text

# Copyright 2018 Stuart Buchanan
# This file is part of FlightGear.
#
# FlightGear is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# FlightGear is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with FlightGear. If not, see <http://www.gnu.org/licenses/>.
#
# Fuel Publisher, providing information about fuel tank contents
var GenericFuelPublisher =
{
new : func (period=1.0) {
var obj = {
parents : [
GenericFuelPublisher,
PeriodicPropertyPublisher.new(notifications.PFDEventNotification.FuelData, period)
],
};
obj.deltaT = period;
# Hack to handle most aircraft not having proper engine hours
if (getprop("/engines/engine[0]/hours") == nil) setprop("/engines/engine[0]/hours", 157.0);
# Assume pilot has correct fuel quantities entered at Start of Day
var tanks = props.getNode("/consumables/fuel",1).getChildren("tank");
foreach(var tank; tanks) {
var actual = tank.getNode("level-gal_us", 1).getValue();
if ((actual == nil) or (! isnum(actual))) actual = 0;
var indicatedNode = tank.getNode("fg1000-indicated-level-gal_us", 1);
if (indicatedNode.getValue() == nil) indicatedNode.setValue(actual);
}
return obj;
},
# Custom publish method as we package the values into an array of fuel tanks,
# assuming that fuel is drawn evenly from both tanks.
publish : func() {
var tank_data = [];
var tanks = props.getNode("/consumables/fuel",1).getChildren("tank");
foreach(var tank; tanks) {
var indicatedNode = tank.getNode("fg1000-indicated-level-gal_us", 1);
var fuel = indicatedNode.getValue();
if ((fuel == nil) or (! isnum(fuel))) fuel = 0;
var fuel_flow = getprop("/engines/engine[0]/fuel-flow-gph");
if ((fuel_flow == nil) or (! isnum(fuel_flow))) fuel_flow = 0;
fuel = fuel - fuel_flow*me.deltaT/3600.0/2;
indicatedNode.setValue(fuel);
append(tank_data, {"FuelUSGal": fuel});
}
var notification = notifications.PFDEventNotification.new(
"MFD",
1,
notifications.PFDEventNotification.FuelData,
{ Id : "FuelData", Value : tank_data} );
me._transmitter.NotifyAll(notification);
},
};