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reduce slip effect speed (harrier VTOL)

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mfranz 2006-08-24 20:55:18 +00:00
parent b5863d9cad
commit d27df588a6
1 changed files with 12 additions and 8 deletions
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20
Nasal/dynamic_view.nas
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@ -2,6 +2,8 @@
# deliberate view direction. Doesn't consider forced view changes due to
# acceleration.
sin = func(a) { math.sin(a * math.pi / 180.0) }
cos = func(a) { math.cos(a * math.pi / 180.0) }
sigmoid = func(x) { 1 / (1 + math.exp(-x)) }
@ -128,9 +130,10 @@ ViewManager = {
m.vy = Input.new("/velocities/vBody-fps", 0.5924838, 0);
m.vz = Input.new("/velocities/wBody-fps", 0.5924838, 0);
# turn WoW bool into smooth values ranging from -1 to 1
# turn WoW bool into smooth values ranging from 0 to 1
m.wow = Input.new("/gear/gear/wow", 1, 0, 1.2);
m.hdg_chg_rate = LowPass.new(1.3);
m.hdg_change = LowPass.new(1.3);
m.ubody = LowPass.new(1.3);
m.last_heading = m.headingN.getValue();
m.size_factor = -getprop("/sim/chase-distance-m") / 25;
m.reset();
@ -157,14 +160,15 @@ ViewManager = {
# var adir = math.atan2(ay, ax) * 180 / math.pi;
# var aval = math.sqrt(ax * ax + ay * ay);
# var vx = me.vx.get();
var vx = me.vx.get();
# var vy = me.vy.get();
# var vdir = math.atan2(vy, vx) * 180 / math.pi;
# var vval = math.sqrt(vx * vx + vy * vy);
# var wspd = me.wind_speedN.getValue();
# var wdir = me.headingN.getValue() - me.wind_dirN.getValue();
# var u = vx - wspd * cos(wdir);
var wspd = me.wind_speedN.getValue();
var wdir = me.headingN.getValue() - me.wind_dirN.getValue();
var u = vx - wspd * cos(wdir);
var slip = sin(me.slipN.getValue()) * me.ubody.filter(normatan(u / 15));
var hdg = me.headingN.getValue();
var hdiff = me.last_heading - hdg;
@ -175,12 +179,12 @@ ViewManager = {
while (hdiff < -180) {
hdiff += 360;
}
var steering = normatan(me.hdg_chg_rate.filter(hdiff)) * me.size_factor;
var steering = normatan(me.hdg_change.filter(hdiff)) * me.size_factor;
me.heading_axis.apply( # heading ...
-15 * sin(roll) * cos(pitch) # due to roll
+ 40 * steering * wow # due to ground steering
+ 0.4 * me.slipN.getValue() * (1 - wow) # due to sideslip (in air)
+ 10 * slip * (1 - wow) # due to sideslip (in air)
);
me.pitch_axis.apply( # pitch ...
10 * sin(roll) * sin(roll) # due to roll