oprf_assets/missile-frigate/Nasal/fdm.nas
2019-04-14 08:57:01 +02:00

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# Copyright (C) 2015 onox
#
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#io.include("Aircraft/ExpansionPack/Nasal/init.nas");
#with("updateloop");
# Number of iterations per second
var frequency = 20.0;
# Change in heading per second at full rudder deflection
var heading_ps = 0.1;
time_last = 0;
sim_speed = 1;
sink_rate = .025;
pitch_rate = .007;
roll_rate = .007;
var last_speed = 4;
setprop("/carrier/pitch-deg",0);
setprop("/carrier/pitch-offset",0);
setprop("/carrier/roll-deg",0);
setprop("/carrier/roll-offset",0);
setprop("/carrier/sunk",0);
setprop("/carrier/aground",0);
var PositionUpdater = func () {
settimer( PositionUpdater, 1/frequency );
var position = geo.aircraft_position();
var time_now = getprop("/sim/time/elapsed-sec");
var dt = (time_now - time_last) * sim_speed;
if (dt == 0) return;
time_last = time_now;
var heading = getprop("/orientation/heading-deg");
var speed = getprop("/velocities/groundspeed-kt");
var rudder = getprop("/surface-positions/rudder-pos-norm");
var aground_pos = geo.Coord.new().set_latlon(position.lat(),position.lon());
aground_pos.apply_course_distance(heading,25);
var aground = geodinfo(aground_pos.lat(), aground_pos.lon())[1].solid;
if ( aground == 0 ) {
aground_pos.apply_course_distance(heading,-50);
aground = geodinfo(aground_pos.lat(), aground_pos.lon())[1].solid;
}
if ( aground == 1 ) {
setprop("/carrier/aground",1);
setprop("/carrier/sunk",1);
}
if ( aground == 1 ) {
speed = 0;
}
#print(speed);
var distance = speed * globals.KT2MPS * dt;
position.apply_course_distance(heading, distance);
# check if we've ran aground
# Set new position
setprop("/position/latitude-deg", position.lat());
setprop("/position/longitude-deg", position.lon());
if ( getprop("/carrier/sunk") == 0 ) {
# Update heading
var course = heading + rudder * heading_ps * dt;
setprop("/orientation/heading-deg", course);
setprop("/position/altitude-ft",getprop("/position/ground-elev-ft"));
# } elsif ( getprop("/carrier/sunk") == 0 and getprop("/autopilot/route-manager/active") == 1 ) {
#
# #for event
# var speed = 15;
# var cur_waypoint = getprop("/autopilot/route-manager/current-wp");
# var cur_wp_lon = getprop("/autopilot/route-manager/route/wp[" ~ cur_waypoint ~ "]/longitude-deg");
# var cur_wp_lat = getprop("/autopilot/route-manager/route/wp[" ~ cur_waypoint ~ "]/latitude-deg");
# var rm_destination = geo.Coord.new().set_latlon(cur_wp_lat,cur_wp_lon);
#
#
# var heading = position.course_to(rm_destination);
#
# var distance = speed * globals.KT2MPS * dt;
# position.apply_course_distance(heading, distance);
#
# # Set new position
# setprop("/position/latitude-deg", position.lat());
# setprop("/position/longitude-deg", position.lon());
# var g_alt = getprop("/position/ground-elev-ft");
# setprop("/position/altitude-ft",g_alt);
#
# # Update heading
# var course = heading + rudder * heading_ps * dt;
# setprop("/orientation/heading-deg", course);
#
} elsif ( getprop("/carrier/sunk") == 1 ) {
setprop("/carrier/fbw/target/groundspeed-kt",0);
setprop("/controls/engines/engine/throttle",0);
# Set new position
setprop("/position/latitude-deg", position.lat());
setprop("/position/longitude-deg", position.lon());
#calculate sinking.
if ( getprop("carrier/aground") != 1 ) {
setprop("/position/altitude-ft",getprop("/position/altitude-ft") - ( sink_rate ));
setprop("/carrier/pitch-offset",getprop("/carrier/pitch-offset") + ( pitch_rate ));
setprop("/carrier/roll-offset",getprop("/carrier/roll-offset") + ( roll_rate ));
}
}
#set pitch
setprop("/orientation/pitch-deg",getprop("/carrier/pitch-deg") + getprop("/carrier/pitch-offset"));
#set roll
setprop("/orientation/roll-deg",getprop("/carrier/roll-deg") + getprop("/carrier/roll-offset"));
};
PositionUpdater();