# A3XX FMGC/Autoflight
# Joshua Davidson (it0uchpods) and Jonathan Redpath (legoboyvdlp)

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# Copyright (c) Joshua Davidson (it0uchpods) #
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# IT-AUTOFLIGHT Based Autopilot #
#################################

setprop("/it-autoflight/internal/heading-deg", getprop("/orientation/heading-magnetic-deg"));
setprop("/it-autoflight/internal/track-deg", getprop("/orientation/track-magnetic-deg"));
setprop("/it-autoflight/internal/vert-speed-fpm", 0);
setprop("/it-autoflight/internal/heading-error-deg", 0);
setprop("/it-autoflight/internal/heading-predicted", 0);
setprop("/it-autoflight/internal/altitude-predicted", 0);
setprop("/it-autoflight/internal/lnav-advance-nm", 1);

setlistener("/sim/signals/fdm-initialized", func {
	var trueSpeedKts = getprop("/instrumentation/airspeed-indicator/true-speed-kt");
	var locdefl = getprop("/instrumentation/nav[0]/heading-needle-deflection-norm");
	var signal = getprop("/instrumentation/nav[0]/gs-needle-deflection-norm");
	var gear1 = getprop("/gear/gear[1]/wow");
	var gear2 = getprop("/gear/gear[2]/wow");
	var gnds_mps = 0;
	var current_course = 0;
	var wp_fly_from = 0;
	var wp_fly_to = 0;
	var next_course = 0;
	var max_bank_limit = 0;
	var delta_angle = 0;
	var max_bank = 0;
	var radius = 0;
	var time = 0;
	var delta_angle_rad = 0;
	var R = 0;
	var dist_coeff = 0;
	var turn_dist = 0;
	var vsnow = 0;
});

var APinit = func {
	setprop("/instrumentation/efis[0]/trk-selected", 0);
	setprop("/instrumentation/efis[1]/trk-selected", 0);
	setprop("/it-autoflight/custom/trk-fpa", 0);
	setprop("/it-autoflight/input/kts-mach", 0);
	setprop("/it-autoflight/input/ap1", 0);
	setprop("/it-autoflight/input/ap2", 0);
	setprop("/it-autoflight/input/athr", 0);
	setprop("/it-autoflight/input/fd1", 0);
	setprop("/it-autoflight/input/fd2", 0);
	setprop("/it-autoflight/input/hdg", 360);
	setprop("/it-autoflight/input/alt", 10000);
	setprop("/it-autoflight/input/vs", 0);
	setprop("/it-autoflight/input/fpa", 0);
	setprop("/it-autoflight/input/lat", 9);
	setprop("/it-autoflight/input/lat-arm", 0);
	setprop("/it-autoflight/input/vert", 9);
	setprop("/it-autoflight/input/trk", 0);
	setprop("/it-autoflight/input/toga", 0);
	setprop("/it-autoflight/input/spd-managed", 0);
	setprop("/it-autoflight/output/ap1", 0);
	setprop("/it-autoflight/output/ap2", 0);
	setprop("/it-autoflight/output/athr", 0);
	setprop("/it-autoflight/output/fd1", 0);
	setprop("/it-autoflight/output/fd2", 0);
	setprop("/it-autoflight/output/loc-armed", 0);
	setprop("/it-autoflight/output/appr-armed", 0);
	setprop("/it-autoflight/output/thr-mode", 2);
	setprop("/it-autoflight/output/lat", 9);
	setprop("/it-autoflight/output/vert", 9);
	setprop("/it-autoflight/output/vert-mng", 4);
	setprop("/it-autoflight/output/fma-pwr", 0);
	setprop("/it-autoflight/settings/use-backcourse", 0);
	setprop("/it-autoflight/internal/min-vs", -500);
	setprop("/it-autoflight/internal/max-vs", 500);
	setprop("/it-autoflight/internal/alt", 10000);
	setprop("/it-autoflight/internal/alt", 10000);
	setprop("/it-autoflight/internal/fpa", 0);
	setprop("/it-autoflight/internal/top-of-des-nm", 0);
	setprop("/it-autoflight/internal/alt-const", 10000);
	setprop("/it-autoflight/internal/mng-alt", 10000);
	setprop("/it-autoflight/internal/prof-mode", "XX");
	setprop("/it-autoflight/internal/prof-fpm", 0);
	setprop("/it-autoflight/internal/top-of-des-nm", 0);
	setprop("/it-autoflight/mode/thr", "THRUST");
	setprop("/it-autoflight/mode/arm", " ");
	setprop("/it-autoflight/mode/lat", " ");
	setprop("/it-autoflight/mode/vert", " ");
	setprop("/it-autoflight/input/spd-kts", 100);
	setprop("/it-autoflight/input/spd-mach", 0.50);
	setprop("/it-autoflight/custom/show-hdg", 1);
	trkfpa_off();
	ap_varioust.start();
	thrustmode();
}

# AP 1 Master System
setlistener("/it-autoflight/input/ap1", func {
	var apmas = getprop("/it-autoflight/input/ap1");
	var ac_ess = getprop("/systems/electrical/bus/ac-ess");
	var law = getprop("/it-fbw/law");
	if (apmas == 0) {
		setprop("/it-autoflight/output/ap1", 0);
		if (getprop("/it-autoflight/sound/enableapoffsound") == 1 and getprop("/it-autoflight/output/ap2") == 0) {
			setprop("/it-autoflight/sound/apoffsound", 1);
			setprop("/it-autoflight/sound/enableapoffsound", 0);	  
		}
		fmabox();
		updateTimers();
	} else if (apmas == 1 and ac_ess >= 110 and law == 0) {
		if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and getprop("/position/gear-agl-ft") >= 100) {
			if (getprop("/it-autoflight/output/lat") == 9) {
				setprop("/it-autoflight/input/lat", 3);
			}
			if (getprop("/it-autoflight/output/vert") == 9) {
				if (getprop("/it-autoflight/custom/trk-fpa") == 0) {
					setprop("/it-autoflight/input/vert", 1);
				} else if (getprop("/it-autoflight/custom/trk-fpa") == 1) {
					setprop("/it-autoflight/input/vert", 5);
				}
			}
			setprop("/it-autoflight/output/ap1", 1);
			if (getprop("/it-autoflight/output/ap2") == 1 and (getprop("/it-autoflight/output/appr-armed") != 1 and getprop("/it-autoflight/output/lat") != 2 and getprop("/it-autoflight/output/lat") != 6)) {
				setprop("/it-autoflight/input/ap2", 0);
			}
			setprop("/it-autoflight/sound/enableapoffsound", 1);
			setprop("/it-autoflight/sound/apoffsound", 0);
			fmabox();
		}
	}
});

# AP 2 Master System
setlistener("/it-autoflight/input/ap2", func {
	var apmas = getprop("/it-autoflight/input/ap2");
	var ac_ess = getprop("/systems/electrical/bus/ac-ess");
	var law = getprop("/it-fbw/law");
	if (apmas == 0) {
		setprop("/it-autoflight/output/ap2", 0);
		if (getprop("/it-autoflight/sound/enableapoffsound2") == 1 and getprop("/it-autoflight/output/ap1") == 0) {
			setprop("/it-autoflight/sound/apoffsound2", 1);	
			setprop("/it-autoflight/sound/enableapoffsound2", 0);	  
		}
		fmabox();
		updateTimers();
	} else if (apmas == 1 and ac_ess >= 110 and law == 0) {
		if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and getprop("/position/gear-agl-ft") >= 100) {
			if (getprop("/it-autoflight/output/lat") == 9) {
				setprop("/it-autoflight/input/lat", 3);
			}
			if (getprop("/it-autoflight/output/vert") == 9) {
				if (getprop("/it-autoflight/custom/trk-fpa") == 0) {
					setprop("/it-autoflight/input/vert", 1);
				} else if (getprop("/it-autoflight/custom/trk-fpa") == 1) {
					setprop("/it-autoflight/input/vert", 5);
				}
			}
			setprop("/it-autoflight/output/ap2", 1);
			if (getprop("/it-autoflight/output/ap1") == 1 and (getprop("/it-autoflight/output/appr-armed") != 1 and getprop("/it-autoflight/output/lat") != 2 and getprop("/it-autoflight/output/lat") != 6)) {
				setprop("/it-autoflight/input/ap1", 0);
			}
			setprop("/it-autoflight/sound/enableapoffsound2", 1);
			setprop("/it-autoflight/sound/apoffsound2", 0);
			fmabox();
		}
	}
});

# AT Master System
setlistener("/it-autoflight/input/athr", func {
	var atmas = getprop("/it-autoflight/input/athr");
	if (atmas == 0) {
		setprop("/it-autoflight/output/athr", 0);
	} else if (atmas == 1) {
		thrustmode();
		setprop("/it-autoflight/output/athr", 1);
	}
});

# Flight Director 1 Master System
setlistener("/it-autoflight/input/fd1", func {
	var fdmas = getprop("/it-autoflight/input/fd1");
	if (fdmas == 0) {
		setprop("/it-autoflight/output/fd1", 0);
		fmabox();
		updateTimers();
	} else if (fdmas == 1) {
		setprop("/it-autoflight/output/fd1", 1);
		fmabox();
	}
});

# Flight Director 2 Master System
setlistener("/it-autoflight/input/fd2", func {
	var fdmas = getprop("/it-autoflight/input/fd2");
	if (fdmas == 0) {
		setprop("/it-autoflight/output/fd2", 0);
		fmabox();
		updateTimers();
	} else if (fdmas == 1) {
		setprop("/it-autoflight/output/fd2", 1);
		fmabox();
	}
});

# FMA Boxes and Mode
var fmabox = func {
	var ap1 = getprop("/it-autoflight/output/ap1");
	var ap2 = getprop("/it-autoflight/output/ap2");
	var fd1 = getprop("/it-autoflight/output/fd1");
	var fd2 = getprop("/it-autoflight/output/fd2");
	if (!ap1 and !ap2 and !fd1 and !fd2) {
		setprop("/it-autoflight/input/lat", 9);
		setprop("/it-autoflight/input/vert", 9);
		setprop("/it-autoflight/output/fma-pwr", 0);
	} else {
		setprop("/it-autoflight/output/fma-pwr", 1);
		if (getprop("/it-autoflight/output/lat") == 9) {
			setprop("/it-autoflight/input/lat", 3);
		}
		if (getprop("/it-autoflight/output/vert") == 9) {
			if (getprop("/it-autoflight/custom/trk-fpa") == 0) {
				setprop("/it-autoflight/input/vert", 1);
			} else if (getprop("/it-autoflight/custom/trk-fpa") == 1) {
				setprop("/it-autoflight/input/vert", 5);
			}
			setprop("/it-autoflight/input/vs", math.round(getprop("/it-autoflight/internal/vert-speed-fpm"), 100));
			setprop("/it-autoflight/input/fpa", math.round(getprop("/it-autoflight/internal/fpa"), 0.1));
		}
	}
}

# Master Lateral
setlistener("/it-autoflight/input/lat", func {
	var ap1 = getprop("/it-autoflight/output/ap1");
	var ap2 = getprop("/it-autoflight/output/ap2");
	var fd1 = getprop("/it-autoflight/output/fd1");
	var fd2 = getprop("/it-autoflight/output/fd2");
	if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and (ap1 or ap2 or fd1 or fd2)) {
		setprop("/it-autoflight/input/lat-arm", 0);
		lateral();
	} else if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and !ap1 and !ap2 and !fd1 and !fd2) {
		setprop("/it-autoflight/input/lat", 9);
		setprop("/it-autoflight/input/lat-arm", 0);
		lateral();
	} else {
		lat_arm();
	}
});

var lateral = func {
	var latset = getprop("/it-autoflight/input/lat");
	if (latset == 0) {
		alandt.stop();
		alandt1.stop();
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/appr-armed", 0);
		setprop("/it-autoflight/output/lat", 0);
		setprop("/it-autoflight/mode/lat", "HDG");
		setprop("/it-autoflight/mode/arm", " ");
	} else if (latset == 1) {
		if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1 and getprop("/position/gear-agl-ft") >= 30) {
			make_lnav_active();
		} else {
			if (getprop("/it-autoflight/output/lat") != 1) {
				setprop("/it-autoflight/input/lat-arm", 1);
				setprop("/it-autoflight/mode/arm", "LNV");
			}
		}
	} else if (latset == 2) {
		if (getprop("/instrumentation/nav[0]/in-range") == 1) {
			locdefl = abs(getprop("/instrumentation/nav[0]/heading-needle-deflection-norm"));
			if (locdefl < 0.95 and locdefl != 0 and getprop("/instrumentation/nav[0]/signal-quality-norm") > 0.99) {
				make_loc_active();
			} else {
				if (getprop("/it-autoflight/output/lat") != 2) {
					setprop("/it-autoflight/input/lat-arm", 0);
					setprop("/it-autoflight/output/loc-armed", 1);
					setprop("/it-autoflight/mode/arm", "LOC");
				}
			}
		} else {
			setprop("/instrumentation/nav[0]/signal-quality-norm", 0);
		}
	} else if (latset == 3) {
		alandt.stop();
		alandt1.stop();
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/appr-armed", 0);
		var hdgpredic = math.round(getprop("/it-autoflight/internal/heading-predicted"));
		setprop("/it-autoflight/input/hdg", hdgpredic);
		setprop("/it-autoflight/output/lat", 0);
		setprop("/it-autoflight/mode/lat", "HDG");
		setprop("/it-autoflight/mode/arm", " ");
	} else if (latset == 4) {
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/output/lat", 4);
		setprop("/it-autoflight/mode/lat", "ALGN");
		setprop("/it-autoflight/custom/show-hdg", 0);
	} else if (latset == 5) {
		setprop("/it-autoflight/output/lat", 5);
		setprop("/it-autoflight/custom/show-hdg", 0);
	} else if (latset == 9) {
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/lat", 9);
		setprop("/it-autoflight/mode/lat", " ");
		setprop("/it-autoflight/mode/arm", " ");
		setprop("/it-autoflight/custom/show-hdg", 1);
	}
}

var lat_arm = func {
	var latset = getprop("/it-autoflight/input/lat");
	if (latset == 0) {
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/mode/arm", " ");
		setprop("/it-autoflight/custom/show-hdg", 1);
	} else if (latset == 1) {
		if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
			setprop("/it-autoflight/input/lat-arm", 1);
			setprop("/it-autoflight/mode/arm", "LNV");
		}
	} else if (latset == 3) {
		if (getprop("/it-autoflight/custom/trk-fpa") == 1) {
			var hdgnow = math.round(getprop("/it-autoflight/internal/track-deg"));
		} else {
			var hdgnow = math.round(getprop("/it-autoflight/internal/heading-deg"));
		}
		setprop("/it-autoflight/input/hdg", hdgnow);
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/mode/arm", " ");
		setprop("/it-autoflight/custom/show-hdg", 1);
	}
}

# Master Vertical
setlistener("/it-autoflight/input/vert", func {
	var ap1 = getprop("/it-autoflight/output/ap1");
	var ap2 = getprop("/it-autoflight/output/ap2");
	var fd1 = getprop("/it-autoflight/output/fd1");
	var fd2 = getprop("/it-autoflight/output/fd2");
	if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and (ap1 or ap2 or fd1 or fd2)) {
		vertical();
	} else if (getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0 and !ap1 and !ap2 and !fd1 and !fd2) {
		setprop("/it-autoflight/input/vert", 9);
		vertical();
	}
});

var vertical = func {
	var vertset = getprop("/it-autoflight/input/vert");
	if (vertset == 0) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		setprop("/it-autoflight/output/vert", 0);
		setprop("/it-autoflight/mode/vert", "ALT HLD");
		if (getprop("/it-autoflight/output/loc-armed")) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			setprop("/it-autoflight/mode/arm", "LNV");
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
		var altpredic = math.round(getprop("/it-autoflight/internal/altitude-predicted"), 100);
		setprop("/it-autoflight/input/alt", altpredic);
		setprop("/it-autoflight/internal/alt", altpredic);
		thrustmode();
	} else if (vertset == 1) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		vsnow = math.round(getprop("/it-autoflight/internal/vert-speed-fpm"), 100);
		setprop("/it-autoflight/input/vs", vsnow);
		setprop("/it-autoflight/output/vert", 1);
		setprop("/it-autoflight/mode/vert", "V/S");
		if (getprop("/it-autoflight/output/loc-armed")) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			setprop("/it-autoflight/mode/arm", "LNV");
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
		thrustmode();
	} else if (vertset == 2) {
		if (getprop("/instrumentation/nav[0]/in-range") == 1) {
			locdefl = abs(getprop("/instrumentation/nav[0]/heading-needle-deflection-norm"));
			if (locdefl < 0.95 and locdefl != 0 and getprop("/instrumentation/nav[0]/signal-quality-norm") > 0.99) {
				make_loc_active();
			} else {
				if (getprop("/it-autoflight/output/lat") != 2) {
					setprop("/it-autoflight/input/lat-arm", 0);
					setprop("/it-autoflight/output/loc-armed", 1);
				}
			}
			signal = getprop("/instrumentation/nav[0]/gs-needle-deflection-norm");
			if (((signal < 0 and signal >= -0.20) or (signal > 0 and signal <= 0.20)) and getprop("/it-autoflight/output/lat") == 2) {
				make_appr_active();
			} else {
				if (getprop("/it-autoflight/output/vert") != 2 and getprop("/it-autoflight/output/vert") != 6) {
					setprop("/it-autoflight/output/appr-armed", 1);
					setprop("/it-autoflight/mode/arm", "ILS");
				}
			}
		} else {
			setprop("/instrumentation/nav[0]/signal-quality-norm", 0);
			setprop("/instrumentation/nav[0]/gs-rate-of-climb", 0);
		}
	} else if (vertset == 3) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var alt = getprop("/it-autoflight/internal/alt");
		var dif = calt - alt;
		vsnow = getprop("/it-autoflight/internal/vert-speed-fpm");
		if (calt < alt) {
			setprop("/it-autoflight/internal/max-vs", vsnow);
		} else if (calt > alt) {
			setprop("/it-autoflight/internal/min-vs", vsnow);
		}
		minmaxtimer.start();
		thrustmode();
		setprop("/it-autoflight/output/vert", 0);
		setprop("/it-autoflight/mode/vert", "ALT CAP");
	} else if (vertset == 4) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var alt = getprop("/it-autoflight/internal/alt");
		var dif = calt - alt;
		if (dif < 250 and dif > -250) {
			alt_on();
		} else {
			flch_on();
		}
		if (getprop("/it-autoflight/output/loc-armed")) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			setprop("/it-autoflight/mode/arm", "LNV");
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
	} else if (vertset == 5) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		var fpanow = math.round(getprop("/it-autoflight/internal/fpa"), 0.1);
		setprop("/it-autoflight/input/fpa", fpanow);
		setprop("/it-autoflight/output/vert", 5);
		setprop("/it-autoflight/mode/vert", "FPA");
		if (getprop("/it-autoflight/output/loc-armed")) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			setprop("/it-autoflight/mode/arm", "LNV");
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
		thrustmode();
	} else if (vertset == 6) {
		setprop("/it-autoflight/output/vert", 6);
		setprop("/it-autoflight/mode/arm", " ");
		thrustmode();
		mng_sys_stop();
		alandt.stop();
		alandt1.start();
	} else if (vertset == 7) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/vert", 7);
		if (getprop("/it-autoflight/output/loc-armed") == 1) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			# Do nothing
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		thrustmodet.start();
	} else if (vertset == 8) {
		if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1 and getprop("/it-autoflight/internal/alt-const") >= 100) {
			alandt.stop();
			alandt1.stop();
			setprop("/it-autoflight/output/appr-armed", 0);
			setprop("/it-autoflight/output/vert", 8);
			mng_run();
			setprop("/it-autoflight/mode/vert", "mng");
			setprop("/it-autoflight/mode/arm", " ");
			var altinput = getprop("/it-autoflight/input/alt");
			setprop("/it-autoflight/internal/alt", altinput);
			if (getprop("/it-autoflight/output/loc-armed")) {
				setprop("/it-autoflight/mode/arm", "LOC");
			} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
				setprop("/it-autoflight/mode/arm", "LNV");
			} else {
				setprop("/it-autoflight/mode/arm", " ");
			}
			mng_maint.start();
			thrustmodet.stop();
		} else {
			setprop("/it-autoflight/input/vert", 4);
			vertical();
		}
	} else if (vertset == 9) {
		alandt.stop();
		alandt1.stop();
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		setprop("/it-autoflight/output/vert", 9);
		setprop("/it-autoflight/mode/vert", " ");
		if (getprop("/it-autoflight/output/loc-armed")) {
			setprop("/it-autoflight/mode/arm", "LOC");
		} else if (getprop("/it-autoflight/input/lat-arm") == 1) {
			setprop("/it-autoflight/mode/arm", "LNV");
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
		thrustmode();
	}
}

# Helpers
var toggle_trkfpa = func {
	var trkfpa = getprop("/it-autoflight/custom/trk-fpa");
	if (trkfpa == 0) {
		trkfpa_on();
	} else if (trkfpa == 1) {
		trkfpa_off();
	}
}

var trkfpa_off = func {
	setprop("/it-autoflight/custom/trk-fpa", 0);
	if (getprop("/it-autoflight/output/vert") == 5) {
		setprop("/it-autoflight/input/vert", 1);
	}
	setprop("/it-autoflight/input/trk", 0);
	setprop("/instrumentation/efis[0]/trk-selected", 0);
	setprop("/instrumentation/efis[1]/trk-selected", 0);
	var hed = getprop("/it-autoflight/internal/heading-error-deg");
	if (hed >= -10 and hed <= 10 and getprop("/it-autoflight/output/lat") == 0) {
		setprop("/it-autoflight/input/lat", 3);
	}
}

var trkfpa_on = func {
	setprop("/it-autoflight/custom/trk-fpa", 1);
	if (getprop("/it-autoflight/output/vert") == 1) {
		setprop("/it-autoflight/input/vert", 5);
	}
	setprop("/it-autoflight/input/trk", 1);
	setprop("/instrumentation/efis[0]/trk-selected", 1);
	setprop("/instrumentation/efis[1]/trk-selected", 1);
	var hed = getprop("/it-autoflight/internal/heading-error-deg");
	if (hed >= -10 and hed <= 10 and getprop("/it-autoflight/output/lat") == 0) {
		setprop("/it-autoflight/input/lat", 3);
	}
}

setlistener("/autopilot/route-manager/current-wp", func {
	setprop("/autopilot/internal/wp-change-time", getprop("/sim/time/elapsed-sec"));
});

var ap_various = func {
	trueSpeedKts = getprop("/instrumentation/airspeed-indicator/true-speed-kt");
	if (trueSpeedKts > 420) {
		setprop("/it-autoflight/internal/bank-limit", 15);
	} else if (trueSpeedKts > 340) {
		setprop("/it-autoflight/internal/bank-limit", 20);
	} else {
		setprop("/it-autoflight/internal/bank-limit", 25);
	}
	
	if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
		if ((getprop("/autopilot/route-manager/current-wp") + 1) < getprop("/autopilot/route-manager/route/num")) {
			gnds_mps = getprop("/velocities/groundspeed-kt") * 0.5144444444444;
			wp_fly_from = getprop("/autopilot/route-manager/current-wp");
			if (wp_fly_from < 0) {
				wp_fly_from = 0;
			}
			current_course = getprop("/autopilot/route-manager/route/wp[" ~ wp_fly_from ~ "]/leg-bearing-true-deg");
			wp_fly_to = getprop("/autopilot/route-manager/current-wp") + 1;
			if (wp_fly_to < 0) {
				wp_fly_to = 0;
			}
			next_course = getprop("/autopilot/route-manager/route/wp[" ~ wp_fly_to ~ "]/leg-bearing-true-deg");
			max_bank_limit = getprop("/it-autoflight/internal/bank-limit");

			delta_angle = math.abs(geo.normdeg180(current_course - next_course));
			max_bank = delta_angle * 1.5;
			if (max_bank > max_bank_limit) {
				max_bank = max_bank_limit;
			}
			radius = (gnds_mps * gnds_mps) / (9.81 * math.tan(max_bank / 57.2957795131));
			time = 0.64 * gnds_mps * delta_angle * 0.7 / (360 * math.tan(max_bank / 57.2957795131));
			delta_angle_rad = (180 - delta_angle) / 114.5915590262;
			R = radius/math.sin(delta_angle_rad);
			dist_coeff = delta_angle * -0.011111 + 2;
			if (dist_coeff < 1) {
				dist_coeff = 1;
			}
			turn_dist = math.cos(delta_angle_rad) * R * dist_coeff / 1852;
			if (getprop("/gear/gear[0]/wow") == 1 and turn_dist < 1) {
				turn_dist = 1;
			}
			setprop("/it-autoflight/internal/lnav-advance-nm", turn_dist);
			if (getprop("/sim/time/elapsed-sec")-getprop("/autopilot/internal/wp-change-time") > 60) {
				setprop("/autopilot/internal/wp-change-check-period", time);
			}
			
			if (getprop("/autopilot/route-manager/wp/dist") <= turn_dist) {
				setprop("/autopilot/route-manager/current-wp", getprop("/autopilot/route-manager/current-wp") + 1);
			}
		}
	}
	
	if (getprop("/it-autoflight/output/ap1") == 1 or getprop("/it-autoflight/output/ap2") == 1) {
		if (getprop("/controls/flight/aileron") > 0.2 or getprop("/controls/flight/aileron") < -0.2 or getprop("/controls/flight/elevator") > 0.2 or getprop("/controls/flight/elevator") < -0.2) {
			setprop("/it-autoflight/input/ap1", 0);
			setprop("/it-autoflight/input/ap2", 0);
		}
	}
}

var flch_on = func {
	setprop("/it-autoflight/output/appr-armed", 0);
	setprop("/it-autoflight/output/vert", 4);
	thrustmodet.start();
}
var alt_on = func {
	setprop("/it-autoflight/output/appr-armed", 0);
	setprop("/it-autoflight/output/vert", 0);
	setprop("/it-autoflight/mode/vert", "ALT CAP");
	setprop("/it-autoflight/internal/max-vs", 500);
	setprop("/it-autoflight/internal/min-vs", -500);
	minmaxtimer.start();
}

setlistener("/it-autoflight/input/kts-mach", func {
	var ias = getprop("/it-autoflight/input/spd-kts") or 0;
	var mach = getprop("/it-autoflight/input/spd-mach") or 0;
	if (getprop("/it-autoflight/input/kts-mach") == 0) {
		if (ias >= 100 and ias <= 350) {
			setprop("/it-autoflight/input/spd-kts", math.round(ias, 1));
		} else if (ias < 100) {
			setprop("/it-autoflight/input/spd-kts", 100);
		} else if (ias > 350) {
			setprop("/it-autoflight/input/spd-kts", 350);
		}
	} else if (getprop("/it-autoflight/input/kts-mach") == 1) {
		if (mach >= 0.50 and mach <= 0.82) {
			setprop("/it-autoflight/input/spd-mach", math.round(mach, 0.001));
		} else if (mach < 0.50) {
			setprop("/it-autoflight/input/spd-mach", 0.50);
		} else if (mach > 0.82) {
			setprop("/it-autoflight/input/spd-mach", 0.82);
		}
	}
});

# Takeoff Modes
# TOGA
setlistener("/it-autoflight/input/toga", func {
	if (getprop("/it-autoflight/input/toga") == 1) {
		setprop("/it-autoflight/input/vert", 7);
		vertical();
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/appr-armed", 0);
		setprop("/it-autoflight/input/toga", 0);
		togasel();
	}
});

var togasel = func {
	if ((getprop("/gear/gear[1]/wow") == 0) and (getprop("/gear/gear[2]/wow") == 0)) {
		var iasnow = math.round(getprop("/instrumentation/airspeed-indicator/indicated-speed-kt"));
		setprop("/it-autoflight/input/spd-kts", iasnow);
		setprop("/it-autoflight/input/kts-mach", 0);
		setprop("/it-autoflight/mode/vert", "G/A CLB");
		setprop("/it-autoflight/input/lat", 3);
	} else {
		setprop("/it-autoflight/input/lat", 5);
		lateral();
		setprop("/it-autoflight/mode/lat", "T/O");
		setprop("/it-autoflight/mode/vert", "T/O CLB");
	}
}

setlistener("/it-autoflight/mode/vert", func {
	var vertm = getprop("/it-autoflight/mode/vert");
	if (vertm == "T/O CLB") {
		reduct.start();
	} else {
		reduct.stop();
	}
});

var toga_reduc = func {
	if (getprop("/instrumentation/altimeter/indicated-altitude-ft") >= getprop("/it-autoflight/settings/reduc-agl-ft") and getprop("/gear/gear[1]/wow") == 0 and getprop("/gear/gear[2]/wow") == 0) {
		setprop("/it-autoflight/input/vert", 4);
	}
}

# Altitude Capture and FPA Timer Logic
setlistener("/it-autoflight/output/vert", func {
	updateTimers();
});

var updateTimers = func {
	if (getprop("/it-autoflight/output/fd1") == 1 or getprop("/it-autoflight/output/fd2") == 1 or getprop("/it-autoflight/output/ap1") == 1 or getprop("/it-autoflight/output/ap2") == 1) {
		var vertm = getprop("/it-autoflight/output/vert");
		if (vertm == 1) {
			altcaptt.start();
		} else if (vertm == 4) {
			altcaptt.start();
		} else if (vertm == 5) {
			altcaptt.start();
		} else if (vertm == 7) {
			altcaptt.start();
		} else if (vertm == 8) {
			altcaptt.stop();
		} else if (vertm == 9) {
			altcaptt.start();
		} else {
			altcaptt.stop();
		}
	} else {
		altcaptt.start();
	}
}

# Altitude Capture
var altcapt = func {
	vsnow = getprop("/it-autoflight/internal/vert-speed-fpm");
	setprop("/it-autoflight/internal/captvs", math.round(abs(vsnow) / 5, 100));
	setprop("/it-autoflight/internal/captvsneg", -1 * math.round(abs(vsnow) / 5, 100));
	if ((getprop("/it-autoflight/output/fd1") == 1 or getprop("/it-autoflight/output/fd2") == 1 or getprop("/it-autoflight/output/ap1") == 1 or getprop("/it-autoflight/output/ap2") == 1) and getprop("/it-autoflight/output/vert") != 9) {
		var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var alt = getprop("/it-autoflight/internal/alt");
		var dif = calt - alt;
		if (dif < getprop("/it-autoflight/internal/captvs") and dif > getprop("/it-autoflight/internal/captvsneg")) {
			if (vsnow > 0 and dif < 0) {
				setprop("/it-autoflight/input/vert", 3);
				setprop("/it-autoflight/output/thr-mode", 0);
				setprop("/it-autoflight/mode/thr", "THRUST");
			} else if (vsnow < 0 and dif > 0) {
				setprop("/it-autoflight/input/vert", 3);
				setprop("/it-autoflight/output/thr-mode", 0);
				setprop("/it-autoflight/mode/thr", "THRUST");
			}
		}
	}
	var altinput = getprop("/it-autoflight/input/alt");
	setprop("/it-autoflight/internal/alt", altinput);
}

# Min and Max Pitch Reset
var minmax = func {
	var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
	var alt = getprop("/it-autoflight/internal/alt");
	var dif = calt - alt;
	if (dif < 50 and dif > -50) {
		setprop("/it-autoflight/internal/max-vs", 500);
		setprop("/it-autoflight/internal/min-vs", -500);
		var vertmode = getprop("/it-autoflight/output/vert");
		if (vertmode == 1 or vertmode == 2 or vertmode == 4 or vertmode == 5 or vertmode == 6 or vertmode == 7) {
			# Do not change the vertical mode because we are not trying to capture altitude.
		} else {
			setprop("/it-autoflight/mode/vert", "ALT HLD");
		}
		minmaxtimer.stop();
	}
}

# Thrust Mode Selector
var thrustmode = func {
	var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
	var alt = getprop("/it-autoflight/internal/alt");
	if (getprop("/it-autoflight/output/vert") == 4) {
		if (calt < alt) {
			setprop("/it-autoflight/output/thr-mode", 2);
			setprop("/it-autoflight/mode/thr", " PITCH");
			setprop("/it-autoflight/mode/vert", "SPD CLB");
		} else if (calt > alt) {
			setprop("/it-autoflight/output/thr-mode", 1);
			setprop("/it-autoflight/mode/thr", " PITCH");
			setprop("/it-autoflight/mode/vert", "SPD DES");
		} else {
			setprop("/it-autoflight/output/thr-mode", 0);
			setprop("/it-autoflight/mode/thr", "THRUST");
			setprop("/it-autoflight/input/vert", 3);
		}
	} else if (getprop("/it-autoflight/output/vert") == 7) {
		setprop("/it-autoflight/output/thr-mode", 2);
		setprop("/it-autoflight/mode/thr", " PITCH");
	} else if (getprop("/it-autoflight/output/vert") == 8) {
		thrustmodet.stop();
	} else {
		setprop("/it-autoflight/output/thr-mode", 0);
		setprop("/it-autoflight/mode/thr", "THRUST");
		thrustmodet.stop();
	}
}

# ILS and Autoland
# LOC and G/S arming
setlistener("/it-autoflight/input/lat-arm", func {
	check_arms();
});

setlistener("/it-autoflight/output/loc-armed", func {
	check_arms();
});

setlistener("/it-autoflight/output/appr-armed", func {
	check_arms();
});

var check_arms = func {
	if (getprop("/it-autoflight/input/lat-arm") or getprop("/it-autoflight/output/loc-armed") or getprop("/it-autoflight/output/appr-armed")) {
		update_armst.start();
	} else {
		update_armst.stop();
	}
}

var update_arms = func {
	if (getprop("/it-autoflight/input/lat-arm") == 1 and getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1 and getprop("/position/gear-agl-ft") >= 30) {
		make_lnav_active();
	}
	if (getprop("/instrumentation/nav[0]/in-range") == 1) {
		if (getprop("/it-autoflight/output/loc-armed")) {
			locdefl = abs(getprop("/instrumentation/nav[0]/heading-needle-deflection-norm"));
			if (locdefl < 0.95 and locdefl != 0 and getprop("/instrumentation/nav[0]/signal-quality-norm") > 0.99) {
				make_loc_active();
			} else {
				return 0;
			}
		}
		if (getprop("/it-autoflight/output/appr-armed")) {
			signal = getprop("/instrumentation/nav[0]/gs-needle-deflection-norm");
			if (((signal < 0 and signal >= -0.20) or (signal > 0 and signal <= 0.20)) and getprop("/it-autoflight/output/lat") == 2) {
				make_appr_active();
			} else {
				return 0;
			}
		}
	}
}

var make_lnav_active = func {
	if (getprop("/it-autoflight/output/lat") != 1) {
		alandt.stop();
		alandt1.stop();
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/appr-armed", 0);
		setprop("/it-autoflight/output/lat", 1);
		setprop("/it-autoflight/mode/lat", "LNAV");
		setprop("/it-autoflight/mode/arm", " ");
		setprop("/it-autoflight/custom/show-hdg", 0);
	}
}

var make_loc_active = func {
	if (getprop("/it-autoflight/output/lat") != 2) {
		setprop("/it-autoflight/input/lat-arm", 0);
		setprop("/it-autoflight/output/loc-armed", 0);
		setprop("/it-autoflight/output/lat", 2);
		setprop("/it-autoflight/mode/lat", "LOC");
		setprop("/it-autoflight/custom/show-hdg", 0);
		if (getprop("/it-autoflight/output/appr-armed") == 1) {
			# Do nothing because G/S is armed
		} else {
			setprop("/it-autoflight/mode/arm", " ");
		}
	}
}

var make_appr_active = func {
	if (getprop("/it-autoflight/output/vert") != 2) {
		mng_sys_stop();
		setprop("/it-autoflight/output/appr-armed", 0);
		setprop("/it-autoflight/output/vert", 2);
		setprop("/it-autoflight/mode/vert", "G/S");
		setprop("/it-autoflight/mode/arm", " ");
		alandt.start();
		thrustmode();
	}
}

# Autoland Stage 1 Logic (Land)
var aland = func {
	if (getprop("/position/gear-agl-ft") <= 300) {
		setprop("/it-autoflight/mode/vert", "LAND");
	}
	if (getprop("/position/gear-agl-ft") <= 100) {
		setprop("/it-autoflight/input/vert", 6);
	}
}

var aland1 = func {
	var aglal = getprop("/position/gear-agl-ft");
	if (aglal <= 80 and aglal > 5) {
		setprop("/it-autoflight/input/lat", 4);
	}
	if (aglal <= 50 and aglal > 5) {
		setprop("/it-autoflight/mode/vert", "FLARE");
	}
	var ap1 = getprop("/it-autoflight/output/ap1");
	var ap2 = getprop("/it-autoflight/output/ap2");
	if (aglal <= 18 and aglal > 5 and (ap1 or ap2)) {
		thrustmodet.stop();
		setprop("/it-autoflight/output/thr-mode", 1);
		setprop("/it-autoflight/mode/thr", "RETARD");
	}
	gear1 = getprop("/gear/gear[1]/wow");
	gear2 = getprop("/gear/gear[2]/wow");
	if (gear1 == 1 or gear2 == 1) {
		alandt1.stop();
		setprop("/it-autoflight/mode/lat", "RLOU");
		setprop("/it-autoflight/mode/vert", "ROLLOUT");
	}
}

# Managed Climb/Descent
var mng_main = func {
	if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
		var altinput = getprop("/it-autoflight/input/alt");
		setprop("/it-autoflight/internal/alt", altinput);
		var wp_curr = getprop("/autopilot/route-manager/current-wp");
		var mng_alt_wp = getprop("/autopilot/route-manager/route/wp",wp_curr,"altitude-ft");
		if (getprop("/it-autoflight/internal/alt-const") == mng_alt_wp) {
			# Do nothing
		} else {
			setprop("/it-autoflight/internal/alt-const", mng_alt_wp);
		}
		mng_alt_selector();
		if (getprop("/it-autoflight/internal/alt-const") < 100) {
			setprop("/it-autoflight/input/vert", 4);
		}
	} else {
		setprop("/it-autoflight/input/vert", 4);
	}
}

var mng_sys_stop = func {
	mng_maint.stop();
	mng_altcaptt.stop();
	mng_minmaxt.stop();
	mng_des_fpmt.stop();
	mng_des_todt.stop();
	setprop("/it-autoflight/mode/mng", "NONE");
}

setlistener("/it-autoflight/input/alt", func {
	if (getprop("/it-autoflight/output/vert") == 8) {
		mng_alt_selector();
		mng_run();
	}
});

setlistener("/it-autoflight/internal/alt-const", func {
	if (getprop("/it-autoflight/output/vert") == 8) {
		mng_alt_selector();
		mng_run();
	}
});

setlistener("/autopilot/route-manager/current-wp", func {
	if (getprop("/it-autoflight/output/vert") == 8) {
		mng_alt_selector();
		mng_run();
	}
});

var mng_run = func {
	if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
		var wp_curr = getprop("/autopilot/route-manager/current-wp");
		var wptnum = getprop("/autopilot/route-manager/current-wp");
		var mng_alt_wp = getprop("/autopilot/route-manager/route/wp",wp_curr,"altitude-ft");
		if ((wptnum - 1) < getprop("/autopilot/route-manager/route/num")) {
			var mng_alt_wp_prev = getprop("/autopilot/route-manager/route/wp",wp_curr - 1,"altitude-ft");
			var altcurr = getprop("/instrumentation/altimeter/indicated-altitude-ft");
			if (mng_alt_wp_prev >= 100) {
				if (mng_alt_wp_prev > mng_alt_wp) {
					mng_des_todt.start();
					setprop("/it-autoflight/internal/mng-mode", "DES");
				} else if (mng_alt_wp_prev == mng_alt_wp) {
					mng_des_todt.stop();
					setprop("/it-autoflight/internal/top-of-des-nm", 0);
					setprop("/it-autoflight/internal/mng-mode", "XX");
				} else if (mng_alt_wp_prev <= mng_alt_wp) {
					mng_des_todt.stop();
					setprop("/it-autoflight/internal/top-of-des-nm", 0);
					setprop("/it-autoflight/internal/mng-mode", "CLB");
				}
			} else if (mng_alt_wp_prev < 100) {
				if (altcurr > mng_alt_wp) {
					mng_des_todt.start();
					setprop("/it-autoflight/internal/mng-mode", "DES");
				} else if (altcurr == mng_alt_wp) {
					mng_des_todt.stop();
					setprop("/it-autoflight/internal/top-of-des-nm", 0);
					setprop("/it-autoflight/internal/mng-mode", "XX");
				} else if (altcurr <= mng_alt_wp) {
					mng_des_todt.stop();
					setprop("/it-autoflight/internal/top-of-des-nm", 0);
					setprop("/it-autoflight/internal/mng-mode", "CLB");
				}
			}
		} else {
			mng_des_todt.stop();
			setprop("/it-autoflight/internal/top-of-des-nm", 0);
		}
		if (mng_alt_wp >= 100) {
			if (getprop("/it-autoflight/internal/mng-mode") == "CLB") {
				var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
				var valt = getprop("/it-autoflight/internal/mng-alt");
				var vdif = calt - valt;
				if (vdif > 250 or vdif < -250) {
					mng_clb();
				} else {
					mng_alt_sel();
				}
			} else if (getprop("/it-autoflight/internal/mng-mode") == "DES") {
				var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
				var valt = getprop("/it-autoflight/internal/mng-alt");
				var vdif = calt - valt;
				if (vdif > 250 or vdif < -250) {
					mng_des_spd();
				} else {
					mng_alt_sel();
				}
			} else if (getprop("/it-autoflight/internal/mng-mode") == "XX") {
				# Do nothing for now
			}
		} else {
			setprop("/it-autoflight/input/vert", 4);
		}
	} else {
		setprop("/it-autoflight/input/vert", 4);
	}
}

# Managed Top of Descent
var mng_des_tod = func {
	if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
		var wp_curr = getprop("/autopilot/route-manager/current-wp");
		var mng_alt_wp = getprop("/autopilot/route-manager/route/wp",wp_curr,"altitude-ft");
		var alt_curr = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var dist = getprop("/autopilot/route-manager/wp/dist");
		var vdist = dist + 1;
		var alttl = abs(alt_curr - mng_alt_wp);
		setprop("/it-autoflight/internal/top-of-des-nm", (alttl / 1000) * 3);
		if (vdist < getprop("/it-autoflight/internal/top-of-des-nm")) {
			mng_des_todt.stop();
			var salt = getprop("/it-autoflight/internal/alt");
			var valt = getprop("/it-autoflight/internal/alt-const");
			var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
			var sdif = abs(calt - salt);
			var vdif = abs(calt - valt);
			if (sdif <= vdif) {
				setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt"));
			} else if (sdif > vdif) {
				setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt-const"));
			}
			var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
			var valt = getprop("/it-autoflight/internal/mng-alt");
			var vdif = calt - valt;
			if (vdif > 550 or vdif < -550) {
				mng_des_spd();
			} else {
				mng_alt_sel();
			}
		}
	}
}

# Managed Altitude Selector
var mng_alt_selector = func {
	var salt = getprop("/it-autoflight/internal/alt");
	var valt = getprop("/it-autoflight/internal/alt-const");
	var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
	var sdif = abs(calt - salt);
	var vdif = abs(calt - valt);
	if (getprop("/it-autoflight/internal/mng-mode") == "CLB") {
		if (sdif <= vdif) {
			setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt"));
		} else if (sdif > vdif) {
			setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt-const"));
		}
	} else if (getprop("/it-autoflight/internal/mng-mode") == "DES") {
		var dist = getprop("/autopilot/route-manager/wp/dist");
		var vdist = dist - 1;
		if (vdist < getprop("/it-autoflight/internal/top-of-des-nm")) {
			if (sdif <= vdif) {
				setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt"));
			} else if (sdif > vdif) {
				setprop("/it-autoflight/internal/mng-alt", getprop("/it-autoflight/internal/alt-const"));
			}
		}
	}
}

# Managed Altitude
var mng_alt_sel = func {
	setprop("/it-autoflight/internal/max-vs", 500);
	setprop("/it-autoflight/internal/min-vs", -500);
	setprop("/it-autoflight/output/thr-mode", 0);
	setprop("/it-autoflight/output/vert-mng", 0);
	setprop("/it-autoflight/mode/thr", "THRUST");
	setprop("/it-autoflight/mode/mng", "MNG CAP");
	mng_minmaxt.start();
}

# Managed Climb
var mng_clb = func {
	mng_des_fpmt.stop();
	setprop("/it-autoflight/output/thr-mode", 2);
	setprop("/it-autoflight/mode/thr", " PITCH");
	setprop("/it-autoflight/output/vert-mng", 4);
	setprop("/it-autoflight/mode/vert", "MNG CLB");
	mng_altcaptt.start();
}

# Managed Descent
var mng_des_spd = func {
	mng_des_fpmt.stop();
	setprop("/it-autoflight/output/thr-mode", 1);
	setprop("/it-autoflight/mode/thr", " PITCH");
	setprop("/it-autoflight/output/mng-vert", 4);
	setprop("/it-autoflight/mode/vert", "MNG DES");
	mng_altcaptt.start();
}
var mng_des_pth = func {
	mng_des_fpmt.start();
	setprop("/it-autoflight/output/thr-mode", 0);
	setprop("/it-autoflight/mode/thr", "THRUST");
	setprop("/it-autoflight/output/mng-vert", 1);
	setprop("/it-autoflight/mode/vert", "MNG DES");
	mng_altcaptt.start();
}
var mng_des_fpm = func {
	if (getprop("/autopilot/route-manager/route/num") > 0 and getprop("/autopilot/route-manager/active") == 1) {
		var gndspd = getprop("/velocities/groundspeed-kt");
		var desfpm = ((gndspd * 0.5) * 10);
		setprop("/it-autoflight/internal/mng-fpm", desfpm);
	}
}

# Managed Capture
var mng_altcapt = func {
	vsnow = getprop("/it-autoflight/internal/vert-speed-fpm");
	setprop("/it-autoflight/internal/captvs", math.round(abs(vsnow) / 5, 100));
	setprop("/it-autoflight/internal/captvsneg", -1 * math.round(abs(vsnow) / 5, 100));
	var MNGalt = getprop("/it-autoflight/internal/mng-alt");
	var MCPalt = getprop("/it-autoflight/internal/alt");
	var MNGdif = abs(MNGalt - MCPalt);
	if (MNGdif <= 20) {
		var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var alt = getprop("/it-autoflight/internal/alt");
		var dif = calt - alt;
		if (dif < getprop("/it-autoflight/internal/captvs") and dif > getprop("/it-autoflight/internal/captvsneg")) {
			if (vsnow > 0 and dif < 0) {
				setprop("/it-autoflight/input/vert", 3);
				setprop("/it-autoflight/output/thr-mode", 0);
			} else if (vsnow < 0 and dif > 0) {
				setprop("/it-autoflight/input/vert", 3);
				setprop("/it-autoflight/output/thr-mode", 0);
			}
		}
	} else {
		var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
		var valt = getprop("/it-autoflight/internal/mng-alt");
		var vdif = calt - valt;
		if (vdif < getprop("/it-autoflight/internal/captvs") and vdif > getprop("/it-autoflight/internal/captvsneg")) {
			if (vsnow > 0 and vdif < 0) {
				mng_capture_alt();
			} else if (vsnow < 0 and vdif > 0) {
				mng_capture_alt();
			}
		}

	}
}

var mng_capture_alt = func {
	vsnow = getprop("/it-autoflight/internal/vert-speed-fpm");
	mng_altcaptt.stop();
	mng_des_fpmt.stop();
	var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
	var alt = getprop("/it-autoflight/internal/alt");
	var valt = getprop("/it-autoflight/internal/mng-alt");
	if (calt < valt) {
		setprop("/it-autoflight/internal/max-vs", vsnow);
	} else if (calt > valt) {
		setprop("/it-autoflight/internal/min-vs", vsnow);
	}
	mng_minmaxt.start();
	setprop("/it-autoflight/output/thr-mode", 0);
	setprop("/it-autoflight/output/vert-mng", 0);
	setprop("/it-autoflight/mode/thr", "THRUST");
	setprop("/it-autoflight/mode/vert", "MNG CAP");
}

# Managed Min and Max Pitch Reset
var mng_minmax = func {
	var calt = getprop("/instrumentation/altimeter/indicated-altitude-ft");
	var valt = getprop("/it-autoflight/internal/mng-alt");
	var vdif = calt - valt;
	if (vdif < 50 and vdif > -50) {
		setprop("/it-autoflight/internal/max-vs", 500);
		setprop("/it-autoflight/internal/min-vs", -500);
		var vertmode = getprop("/it-autoflight/output/vert-mng");
		if (vertmode == 0) {
			setprop("/it-autoflight/mode/vert", "MNG HLD");
		}
		mng_minmaxt.stop();
	}
}

# For Canvas Nav Display.
setlistener("/it-autoflight/input/hdg", func {
	setprop("/autopilot/settings/heading-bug-deg", getprop("/it-autoflight/input/hdg"));
});

setlistener("/it-autoflight/internal/alt", func {
	setprop("/autopilot/settings/target-altitude-ft", getprop("/it-autoflight/internal/alt"));
});

# Timers
var update_armst = maketimer(0.5, update_arms);
var altcaptt = maketimer(0.5, altcapt);
var thrustmodet = maketimer(0.5, thrustmode);
var minmaxtimer = maketimer(0.5, minmax);
var alandt = maketimer(0.5, aland);
var alandt1 = maketimer(0.5, aland1);
var reduct = maketimer(0.5, toga_reduc);
var ap_varioust = maketimer(1, ap_various);
var mng_maint = maketimer(0.5, mng_main);
var mng_altcaptt = maketimer(0.5, mng_altcapt);
var mng_minmaxt = maketimer(0.5, mng_minmax);
var mng_des_fpmt = maketimer(0.5, mng_des_fpm);
var mng_des_todt = maketimer(0.5, mng_des_tod);