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fgdata/Nasal/controls.nas
Richard Harrison 2322d0dbe8 Joystick binding changes; 
- added extra bindings
- reworked the view axis (usually bound to the hat); to move at a better rate.
- trim to elevator position. When selected this will remember the current position and when the joystick is centered it will apply this as the trim. Very useful for carrier approaches; and also it helps to do something that is much easier with loaded controls when you can feel the pressure being reduced by the operations of the trim switch
2018-07-28 00:39:22 +02:00

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var startEngine = func(v = 1, which...) {
if (!v and !size(which))
return props.setAll("/controls/engines/engine", "starter", 0);
if(size(which)) {
foreach(var i; which)
foreach(var e; engines)
if(e.index == i)
e.controls.getNode("starter").setBoolValue(v);
} else {
foreach(var e; engines)
if(e.selected.getValue())
e.controls.getNode("starter").setBoolValue(v);
}
}
var selectEngine = func(which) {
foreach(var e; engines) e.selected.setBoolValue(which == e.index);
}
# Selects (state=1) or deselects (state=0) a list of engines, or all
# engines if no list is specified. Example: selectEngines(1, 1, 3, 5);
#
var selectEngines = func (state, which...) {
if(size(which)) {
foreach(var i; which)
foreach(var e; engines)
if(e.index == i)
e.selected.setBoolValue(state);
} else {
foreach(var e; engines)
e.selected.setBoolValue(state);
}
}
var selectAllEngines = func {
foreach(var e; engines) e.selected.setBoolValue(1);
}
var stepMagnetos = func(change) {
if (!change)
return;
foreach(var e; engines) {
if(e.selected.getValue()) {
var mag = e.controls.getNode("magnetos", 1);
mag.setIntValue(mag.getValue() + change);
}
}
}
var centerFlightControls = func {
setprop("/controls/flight/elevator", 0);
setprop("/controls/flight/aileron", 0);
setprop("/controls/flight/rudder", 0);
}
var throttleMouse = func {
if(!getprop("/devices/status/mice/mouse[0]/button[1]")) return;
var delta = cmdarg().getNode("offset").getValue() * -4;
foreach(var e; engines) {
if(!e.selected.getValue()) continue;
var throttle = e.controls.getNode("throttle");
var val = throttle.getValue() + delta;
if(size(arg) > 0) val = -val;
throttle.setDoubleValue(val);
}
}
setprop("/controls/engines/throttle-all",0);
setprop("/controls/engines/mixture-all",0);
setprop("/controls/engines/propeller-pitch-all",0);
setForAllEnginesProperty= func(type){
var engineRoot = props.globals.getNode("/controls/engines");
var v = getprop("/controls/engines/"~type~"-all");
v = -v;
v = (v+1)*0.5; # scale from -1..1 to 0..1
foreach( var c; engineRoot.getChildren() ){
if (c.getName() =="engine"){
var n = c.getNode(type);
if(n!=nil) {
n.setValue(v);
}
}
}
}
_setlistener("/controls/engines/throttle-all", func{
setForAllEnginesProperty("throttle");
},0,0);
_setlistener("/controls/engines/mixture-all", func{
setForAllEnginesProperty("mixture");
},0,0);
_setlistener("/controls/engines/propeller-pitch-all", func{
setForAllEnginesProperty("propeller-pitch");
},0,0);
# Joystick axis handlers (use cmdarg). Shouldn't be called from
# other contexts. A non-null argument reverses the axis direction.
var axisHandler = func(pre, post) {
func(invert = 0) {
var val = cmdarg().getNode("setting").getValue();
if(invert) val = -val;
foreach(var e; engines)
if(e.selected.getValue())
setprop(pre ~ e.index ~ post, (1 - val) / 2);
}
}
var throttleAxis = axisHandler("/controls/engines/engine[", "]/throttle");
var mixtureAxis = axisHandler("/controls/engines/engine[", "]/mixture");
var propellerAxis = axisHandler("/controls/engines/engine[", "]/propeller-pitch");
var carbHeatAxis = axisHandler("/controls/anti-ice/engine[", "]/carb-heat");
var conditionAxis = axisHandler("/controls/engines/engine[", "]/condition");
# Joystick axis handler for controlling subsets of similar properties.
# Shouldn't be called from other contexts.
# The argument engine can be either an index number or a list of
# index numbers.
# Use only when perEngineSelectedAxisHandler() below will not do.
var perIndexAxisHandler = func(pre, post) {
return
func(index, invert = 0) {
var val = cmdarg().getNode("setting").getValue();
if(invert) val = -val;
if (typeof(index) == "scalar") {
setprop(pre ~ index ~ post, (1 - val) / 2);
} else {
foreach (var e; index) {
setprop(pre ~ e ~ post, (1 - val) / 2);
}
}
};
}
# Joystick axis handler for controlling a selected axis on specific engines.
# Shouldn't be called from other contexts.
# The argument mode can be
# 0 - throttle
# 1 - mixture
# 2 - propeller-pitch
# The argument engine to the returned function can be either an
# engine number or a list of engine numbers.
# Usage example (controlling the mixture of engines 0 and 1):
# <script>
# controls.perEngineSelectedAxisHandler(1)([0,1]);
# </script>
var _axisMode = {
0: perIndexAxisHandler("/controls/engines/engine[",
"]/throttle"),
1: perIndexAxisHandler("/controls/engines/engine[",
"]/mixture"),
2: perIndexAxisHandler("/controls/engines/engine[",
"]/propeller-pitch")
};
var perEngineSelectedAxisHandler = func(mode) {
return _axisMode[mode];
}
##
# Wrapper around stepProps() which emulates the "old" flap behavior for
# configurations that aren't using the new mechanism.
#
var flapsDown = func(step) {
if(step == 0) return;
if(props.globals.getNode("/sim/flaps") != nil) {
stepProps("/controls/flight/flaps", "/sim/flaps", step);
return;
}
# Hard-coded flaps movement in 3 equal steps:
var val = 0.3333334 * step + getprop("/controls/flight/flaps");
setprop("/controls/flight/flaps", val > 1 ? 1 : val < 0 ? 0 : val);
}
var wingSweep = func(step) {
if(step == 0) return;
if(props.globals.getNode("/sim/wing-sweep") != nil) {
stepProps("/controls/flight/wing-sweep", "/sim/wing-sweep", step);
return;
}
# Hard-coded wing movement in 5 equal steps:
var val = 0.20 * step + getprop("/controls/flight/wing-sweep");
setprop("/controls/flight/wing-sweep", val > 1 ? 1 : val < 0 ? 0 : val);
}
var wingsDown = func(v) {
if(v) setprop("/controls/flight/wing-fold", v > 0);
}
var stepSpoilers = func(step) {
if(props.globals.getNode("/sim/spoilers") != nil) {
stepProps("/controls/flight/spoilers", "/sim/spoilers", step);
return;
}
# Hard-coded spoilers movement in 4 equal steps:
var val = 0.25 * step + getprop("/controls/flight/spoilers");
setprop("/controls/flight/spoilers", val > 1 ? 1 : val < 0 ? 0 : val);
}
var stepSlats = func(step) {
if(props.globals.getNode("/sim/slats") != nil) {
stepProps("/controls/flight/slats", "/sim/slats", step);
return;
}
# Hard-coded slats movement in 4 equal steps:
var val = 0.25 * step + getprop("/controls/flight/slats");
setprop("/controls/flight/slats", val > 1 ? 1 : val < 0 ? 0 : val);
}
##
# Steps through an "array" of property settings. The first argument
# specifies a destination property. The second is a string containing
# a global property tree. This tree should contain an array of
# indexed <setting> children. This function will maintain a
# <current-setting> child, which contains the index of the currently
# active setting. The third argument specifies an integer delta,
# indicating how many steps to move through the setting array.
# Note that because of the magic of the property system, this
# mechanism works for all scalar property types (bool, int, double,
# string).
#
# TODO: This interface could easily be extended to allow for wrapping,
# in addition to clamping, allowing a "cycle" of settings to be
# defined. It could also be hooked up with the interpolate() call,
# which would allow the removal of the transition-time feature from
# YASim. Finally, other pre-existing features (the views and engine
# magnetos, for instance), work similarly but not compatibly, and
# could be integrated.
#
var stepProps = func(dst, array, delta) {
dst = props.globals.getNode(dst);
array = props.globals.getNode(array);
if(dst == nil or array == nil) { return; }
var sets = array.getChildren("setting");
var curr = array.getNode("current-setting", 1).getValue();
if(curr == nil) { curr = 0; }
curr = curr + delta;
if (curr < 0) { curr = 0; }
elsif(curr >= size(sets)) { curr = size(sets) - 1; }
array.getNode("current-setting").setIntValue(curr);
dst.setValue(sets[curr].getValue());
}
##
# "Slews" a property smoothly, without dependence on the simulator
# frame rate. The first argument is the property name. The second is
# a rate, in units per second. NOTE: this modifies the property for
# the current frame only; it is intended to be called by bindings
# which repeat each frame. If you want to cause motion over time, see
# interpolate(). Returns new value.
#
var slewProp = func(prop, delta) {
delta *= getprop("/sim/time/delta-realtime-sec");
setprop(prop, getprop(prop) + delta);
return getprop(prop); # must read again because of clamping
}
# Standard trim rate, in units per second. Remember that the full
# range of a trim axis is 2.0. Should probably read this out of a
# property...
var TRIM_RATE = 0.045;
var setElevatorTrimToPosition_listener = nil;
setElevatorTrimToPosition = func() {
if (setElevatorTrimToPosition_listener != nil) {
removelistener(setElevatorTrimToPosition_listener);
setElevatorTrimToPosition_listener = nil;
}
var nv = getprop("/controls/flight/elevator")+getprop("/controls/flight/elevator-trim");
nv = math.min(math.max(-1.0,nv),1.0);
var lv = getprop("/controls/flight/elevator");
if (math.abs(lv) <= 0.001){
print("Elevator trim: centre");
setprop("/controls/flight/elevator-trim", 0);
} else {
print("Trim when centered stick");
setElevatorTrimToPosition_listener = setlistener("/controls/flight/elevator", func(v){
if (math.abs(v.getValue()) <= 0.001) {
setprop("controls/flight/elevator",0);
removelistener(setElevatorTrimToPosition_listener);
setElevatorTrimToPosition_listener = nil;
print("set trim to ",nv);
setprop("/controls/flight/elevator-trim", nv);
}
else
print("Not trimming yet ",v.getValue());
}, 0, 0);
}
}
##
# Handlers. These are suitable for binding to repeatable button press
# events. They are *not* good for binding to the keyboard, since (at
# least) X11 synthesizes its own key repeats.
#
var elevatorTrim = func(speed) {
slewProp("/controls/flight/elevator-trim", speed * TRIM_RATE); }
var aileronTrim = func(speed) {
slewProp("/controls/flight/aileron-trim", speed * TRIM_RATE); }
var rudderTrim = func(speed) {
slewProp("/controls/flight/rudder-trim", speed * TRIM_RATE); }
var THROTTLE_RATE = 0.33;
var adjThrottle = func(speed) {
adjEngControl("throttle", speed); }
var adjMixture = func(speed) {
adjEngControl("mixture", speed); }
var adjCondition = func(speed) {
adjEngControl("condition", speed); }
var adjPropeller = func(speed) {
adjEngControl("propeller-pitch", speed); }
var adjEngControl = func(prop, speed) {
var delta = speed * THROTTLE_RATE * getprop("/sim/time/delta-realtime-sec");
var (value, count) = (0, 0);
foreach(var e; engines) {
if(e.selected.getValue()) {
var node = e.controls.getNode(prop, 1);
node.setValue(node.getValue() + delta);
value += node.getValue(); # must read again because of clamping
count += 1;
}
}
return value / count;
}
##
# arg[0] is the throttle increment
# arg[1] is the auto-throttle target speed increment
var incThrottle = func {
var passive = getprop("/autopilot/locks/passive-mode");
var locked = getprop("/autopilot/locks/speed");
# Note: passive/locked may be nil on aircraft without A/P
if ((passive == 0) and (locked))
{
var node = props.globals.getNode("/autopilot/settings/target-speed-kt", 1);
if (node.getValue() == nil) {
node.setValue(0.0);
}
node.setValue(node.getValue() + arg[1]);
if (node.getValue() < 0.0) {
node.setValue(0.0);
}
}
else
{
foreach(var e; engines)
{
if(e.selected.getValue())
{
var node = e.controls.getNode("throttle", 1);
var val = node.getValue() + arg[0];
node.setValue(val < -1.0 ? -1.0 : val > 1.0 ? 1.0 : val);
}
}
}
}
##
# arg[0] is the aileron increment
# arg[1] is the autopilot target heading increment
var incAileron = func {
var passive = getprop("/autopilot/locks/passive-mode");
var locked = getprop("/autopilot/locks/heading");
# Note: passive/locked may be nil on aircraft without A/P
if ((passive == 0) and (locked == "dg-heading-hold"))
{
var node = props.globals.getNode("/autopilot/settings/heading-bug-deg", 1);
if (node.getValue() == nil) {
node.setValue(0.0);
}
node.setValue(node.getValue() + arg[1]);
if (node.getValue() < 0.0) {
node.setValue(node.getValue() + 360.0);
}
if (node.getValue() > 360.0) {
node.setValue(node.getValue() - 360.0);
}
}
else if ((passive == 0) and (locked == "true-heading-hold"))
{
var node = props.globals.getNode("/autopilot/settings/true-heading-deg", 1);
if (node.getValue() == nil) {
node.setValue(0.0);
}
node.setValue(node.getValue() + arg[1]);
if (node.getValue() < 0.0) {
node.setValue(node.getValue() + 360.0);
}
if (node.getValue() > 360.0) {
node.setValue(node.getValue() - 360.0);
}
}
else
{
var aileron = props.globals.getNode("/controls/flight/aileron");
if (aileron.getValue() == nil) {
aileron.setValue(0.0);
}
aileron.setValue(aileron.getValue() + arg[0]);
if (aileron.getValue() < -1.0) {
aileron.setValue(-1.0);
}
if (aileron.getValue() > 1.0) {
aileron.setValue(1.0);
}
}
}
##
# arg[0] is the elevator increment
# arg[1] is the autopilot target altitude increment
var incElevator = func {
var passive = getprop("/autopilot/locks/passive-mode");
var locked = getprop("/autopilot/locks/altitude");
# Note: passive/locked may be nil on aircraft without A/P
if ((passive == 0) and (locked =="altitude-hold"))
{
var node = props.globals.getNode("/autopilot/settings/target-altitude-ft", 1);
if (node.getValue() == nil) {
node.setValue(0.0);
}
node.setValue(node.getValue() + arg[1]);
if (node.getValue() < 0.0) {
node.setValue(0.0);
}
}
else
{
var elevator = props.globals.getNode("/controls/flight/elevator");
if (elevator.getValue() == nil) {
elevator.setValue(0.0);
}
elevator.setValue(elevator.getValue() + arg[0]);
if (elevator.getValue() < -1.0) {
elevator.setValue(-1.0);
}
if (elevator.getValue() > 1.0) {
elevator.setValue(1.0);
}
}
}
##
# Joystick axis handlers. Don't call from other contexts.
#
var elevatorTrimAxis = func { elevatorTrim(cmdarg().getNode("setting").getValue()); }
var aileronTrimAxis = func { aileronTrim(cmdarg().getNode("setting").getValue()); }
var rudderTrimAxis = func { rudderTrim(cmdarg().getNode("setting").getValue()); }
#
# to avoid clash with "gearToggle"; this will only toggle when
# given a parameter of 1; as the controls button binding will pass 0 when the button is pressed and
# 1 when the button is released.
var gearTogglePosition = func(v) {
if (v){
if (getprop("/controls/gear/gear-down"))
setprop("/controls/gear/gear-down", 0);
else
setprop("/controls/gear/gear-down", 1);
}
}
##
# Gear handling.
# - parameter v is either 1 (down), -1 up (retracted)
var gearDown = func(v) {
if (v < 0) {
setprop("/controls/gear/gear-down", 0);
} elsif (v > 0) {
setprop("/controls/gear/gear-down", 1);
}
}
var gearToggle = func { gearDown(getprop("/controls/gear/gear-down") > 0 ? -1 : 1); }
##
# Brake handling.
#
var fullBrakeTime = 0.5;
var applyBrakes = func(v, which = 0) {
if (which <= 0) { interpolate("/controls/gear/brake-left", v, fullBrakeTime); }
if (which >= 0) { interpolate("/controls/gear/brake-right", v, fullBrakeTime); }
}
var applyTrigger = func(v) {
setprop("/controls/armament/pickle", v);
}
var applyParkingBrake = func(v) {
if (!v) { return; }
var p = "/controls/gear/brake-parking";
setprop(p, var i = !getprop(p));
return i;
}
var parkingBrakeToggle = func(v) {
if (v){
if (getprop("/controls/gear/brake-parking"))
setprop("/controls/gear/brake-parking", 0);
else
setprop("/controls/gear/brake-parking", 1);
}
}
var toggleNWS = func(v) {
if (v){
if (getprop("/controls/gear/nose-wheel-steering"))
setprop("/controls/gear/nose-wheel-steering", 0);
else
setprop("/controls/gear/nose-wheel-steering", 1);
}
}
var weAppliedSpeedBrake = 99;
var weAppliedWheelBrake = 99;
#
# allows one binding to do airbrakes and wheel brakes
var applyApplicableBrakes = func(v, which = 0) {
var wow = getprop ("/gear/gear[0]/wow")
or getprop ("/gear/gear[1]/wow")
or getprop ("/gear/gear[2]/wow")
or getprop ("/gear/gear[3]/wow")
or getprop ("/gear/gear[4]/wow")
or getprop ("/gear/gear[5]/wow")
or getprop ("/gear/gear[6]/wow")
;
if (wow) {
if (!v and weAppliedSpeedBrake != 99) {
setprop("controls/flight/speedbrake", 0);
weAppliedSpeedBrake=0;
}
if (which <= 0) {
interpolate("/controls/gear/brake-left", v, controls.fullBrakeTime);
}
if (which >= 0) {
interpolate("/controls/gear/brake-right", v, controls.fullBrakeTime);
}
weAppliedWheelBrake = which;
}
else {
if (!v and weAppliedWheelBrake != 99) {
if (weAppliedWheelBrake <= 0) { interpolate("/controls/gear/brake-left", 0, controls.fullBrakeTime); }
if (weAppliedWheelBrake >= 0) { interpolate("/controls/gear/brake-right", 0, controls.fullBrakeTime); }
weAppliedWheelBrake=0;
}
weAppliedSpeedBrake=which;
setprop("controls/flight/speedbrake", v);
}
}
# 1: Deploy, -1: Release
var deployChute = func(v) setprop("/controls/flight/drag-chute", v);
##
# Weapon handling.
#
var trigger = func(b) setprop("/controls/armament/trigger", b);
var weaponSelect = func(d) {
var ws = props.globals.getNode("/controls/armament/selected", 1);
var n = ws.getValue();
if (n == nil) { n = 0; }
ws.setIntValue(n + d);
}
##
# Communication.
#
var ptt = func(b) setprop("/instrumentation/comm/ptt", b);
##
# Lighting.
#
var toggleLights = func {
if (getprop("/controls/switches/panel-lights")) {
setprop("/controls/switches/panel-lights-factor", 0);
setprop("/controls/switches/panel-lights", 0);
setprop("/controls/switches/landing-light", 0);
setprop("/controls/switches/flashing-beacon", 0);
setprop("/controls/switches/strobe-lights", 0);
setprop("/controls/switches/map-lights", 0);
setprop("/controls/switches/cabin-lights", 0);
setprop("/controls/switches/nav-lights", 0);
} else {
setprop("/controls/electric/battery-switch", 1);
setprop("/controls/electric/alternator-switch", 1);
setprop("/controls/switches/panel-lights-factor", 0.1);
setprop("/controls/switches/panel-lights", 1);
setprop("/controls/switches/landing-light", 1);
setprop("/controls/switches/flashing-beacon", 1);
setprop("/controls/switches/strobe-lights", 1);
setprop("/controls/switches/map-lights", 1);
setprop("/controls/switches/cabin-lights", 1);
setprop("/controls/switches/nav-lights", 1);
}
}
##
# Initialization.
#
var engines = [];
_setlistener("/sim/signals/fdm-initialized", func {
var sel = props.globals.getNode("/sim/input/selected", 1);
var engs = props.globals.getNode("/controls/engines").getChildren("engine");
# need to reset engine list on every FDM reset
engines = [];
# process all engines
foreach(var e; engs) {
var index = e.getIndex();
var s = sel.getChild("engine", index, 1);
if(s.getType() == "NONE") s.setBoolValue(1);
append(engines, { index: index, controls: e, selected: s });
}
});
var replaySkip = func(skip_time)
{
var t = getprop("/sim/replay/time");
if (t != "")
{
t+=skip_time;
if (t>getprop("/sim/replay/end-time"))
t = getprop("/sim/replay/end-time");
if (t<0)
t=0;
setprop("/sim/replay/time", t);
}
}
var speedup = func(speed_up)
{
var t = getprop("/sim/speed-up");
if (speed_up < 0)
{
t = (t > 1/32) ? t/2 : 1/32;
}
else
{
t = (t < 32) ? t*2 : 32;
}
setprop("/sim/speed-up", t);
# reformat as a string, this is borrowed from replay.xml
if (t<0.9)
{
t=1/t; # invert the value
t = "1/" ~ t; # convert to a string and show inverted
}
gui.popupTip("Time speed-up: " ~ t ~ "x");
}
# mouse-mode handling
var cycleMouseMode = func(node)
{
var reason = node.getChild("reason").getValue();
if (reason == "right-click") {
if (!getprop("/sim/mouse/right-button-mode-cycle-enabled")) {
return;
}
}
var modeNode = props.globals.getNode('/devices/status/mice/mouse[0]/mode');
var mode = modeNode.getValue() + 1;
if ((mode == 1) and getprop('/sim/mouse/skip-flight-controls-mode')) {
mode +=1;
}
if (mode == 3) mode = 0;
modeNode.setIntValue(mode);
# this is really a 'show on-screen hints' control
if (getprop('/sim/view-name-popup') == 0)
return;
# some people like popups but strongly object to this one. As you wish.
if (getprop('/sim/mouse/cycle-mode-popup') == 0)
return;
if (mode == 0) {
fgcommand("clear-message", props.Node.new({ "id":"mouse-mode" }));
return;
}
var msg = "";
if (mode == 1)
msg = "Mouse is controlling flight controls. Press TAB to change.";
else
msg = "Mouse is controlling view direction. Press TAB to change.";
fgcommand("show-message", props.Node.new({ "label": msg, "id":"mouse-mode" }));
}
addcommand("cycle-mouse-mode", cycleMouseMode);
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