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A320-family/Nasal/emesary/exec.nas

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#---------------------------------------------------------------------------
#
# Title : Emesary based real time executive
#
# File Type : Implementation File
#
# Description : Uses emesary notifications to permit nasal subsystems to
# : be invoked in a controlled manner.
#
# Author : Richard Harrison (richard@zaretto.com)
#
# Creation Date : 4 June 2018
#
# Version : 1.0
#
# Copyright (C) 2018 Richard Harrison Released under GPL V2
#
#---------------------------------------------------------------------------*/
# to add properties to the FrameNotification simply send a FrameNotificationAddProperty
# to the global transmitter. This will be received by the frameNotifcation object and
# included in the update.
#emesary.GlobalTransmitter.NotifyAll(new FrameNotificationAddProperty("MODULE", "wow","gear/gear[0]/wow"));
#emesary.GlobalTransmitter.NotifyAll(new FrameNotificationAddProperty("MODULE", "engine_n2", "engines/engine[0]/n2"));
#
#
# real time exec loop.
var frame_inc = 0;
var cur_frame_inc = 0.05;
var execLoop = func
{
#
notifications.frameNotification.fetchvars();
if (notifications.frameNotification.FrameCount >= 4) {
notifications.frameNotification.FrameCount = 0;
}
emesary.GlobalTransmitter.NotifyAll(notifications.frameNotification);
#
notifications.frameNotification.FrameCount = notifications.frameNotification.FrameCount + 1;
#
# framecount
# 0: HUD targets, Radar, RWR
# 1: HUD targets, RDR, VSD
# 2: HUD targets, HUD trig, HUD text
# 3: HUD targets, VSD, RDR
#
if (notifications.frameNotification.frame_rate < 5) {
frame_inc = 0.25;#4 Hz
} elsif (notifications.frameNotification.frame_rate < 10) {
frame_inc = 0.125;#8 Hz
} elsif (notifications.frameNotification.frame_rate < 15) {
frame_inc = 0.10;#10 Hz
} elsif (notifications.frameNotification.frame_rate < 20) {
frame_inc = 0.075;#13.3 Hz
} elsif (notifications.frameNotification.frame_rate < 25) {
frame_inc = 0.05;#20 Hz
} elsif (notifications.frameNotification.frame_rate < 40) {
frame_inc = 0.0333;#30 Hz
} else {
frame_inc = 0.02;#50 Hz
}
if (frame_inc != cur_frame_inc) {
cur_frame_inc = frame_inc;
}
settimer(execLoop, cur_frame_inc);
}
# setup the properties to monitor for this system
input = {
frame_rate : "/sim/frame-rate",
elapsed_seconds : "/sim/time/elapsed-sec",
};
foreach (var name; keys(input)) {
emesary.GlobalTransmitter.NotifyAll(notifications.FrameNotificationAddProperty.new("EXEC", name, input[name]));
}