ATC: add transponder system (#93)

* ATC: add transponder system

* I know you want to be but you are not a RMP, ATC

* Update atc.nas

* Update A320-main.xml

* fix

* Disable radios in menubar, change TCAS mode according to transponder switch

* Add new TCAS flags, will be uncommented in 2019.3

* Fix

* Fix

* Hook TCAS to electrical system

* Fix

* Resetting after failure

* Fix

* electrical output now controlled by transponder itself

* Fix

* fix

* fix

* Fix

* Fix

* Bugfixes, add to acconfig

* Re-add radio dialog

* Prevent radio dialog from modifying mode

* Fix clear display

* Remove conflict between dialog and setting the code on the panel

* VC: Cleanup transponder bindings

* Fixes

* Fix

* Fix finally

* Transponder: realign

A320-main.xml

@@ -568,6 +568,10 @@
 			<onbat type="bool">false</onbat>
 			<skip type="bool">0</skip>
 		</adirs>
+		<atc>
+			<system-knob type="int">0</system-knob>
+			<mode-knob type="int">0</mode-knob>
+		</atc>
 		<APU>
 			<fire-btn type="bool">0</fire-btn>
 			<fire-btn-cover type="bool">0</fire-btn-cover>
@@ -767,6 +771,10 @@
 		<acconfig n="0">
 			<autoconfig-running>0</autoconfig-running>
 		</acconfig>
+		<atc>
+			<transponder-code type="string">2000</transponder-code>
+			<failed type="bool">0</failed>
+		</atc>
 		<electrical n="0">
 			<bus n="0">
 				<dc-ess>0</dc-ess>
@@ -972,7 +980,7 @@
 		<tcas><!-- http://wiki.flightgear.org/index.php/TCAS -->
 			<serviceable type="bool">true</serviceable><!-- TCAS ENABLE -->
 			<inputs>
-				<mode type="int">3</mode><!-- 0=off, 1=standby, 2=TA-only, 3=auto(TA/RA) -->
+				<mode type="int">1</mode><!-- 0=off, 1=standby, 2=TA-only, 3=auto(TA/RA) -->
 			</inputs>
 			<voice>
 				<file-prefix type="string">Sounds/tcas/female/</file-prefix>
@@ -1563,6 +1571,9 @@
 		<acp>
 			<file>Aircraft/IDG-A32X/Nasal/acp.nas</file>
 		</acp>
+		<atc>
+			<file>Aircraft/IDG-A32X/Nasal/atc.nas</file>
+		</atc>
 	</nasal>
 
 </PropertyList>

AircraftConfig/acconfig.nas

@@ -266,6 +266,8 @@ var colddark = func {
 		setprop("/controls/lighting/taxi-light-switch", 0.0);
 		setprop("/controls/switches/landing-lights-l", 0.0);
 		setprop("/controls/switches/landing-lights-r", 0.0);
+		setprop("/controls/atc/mode-knob", 0);
+		atc.transponderPanel.modeSwitch(1);
 		libraries.systemsInit();
 		failReset();
 		if (getprop("/engines/engine[1]/n2-actual") < 2) {
@@ -447,6 +449,8 @@ var taxi_b = func {
 	setprop("/controls/radio/rmp[0]/on", 1);
 	setprop("/controls/radio/rmp[1]/on", 1);
 	setprop("/controls/radio/rmp[2]/on", 1);
+	setprop("/controls/atc/mode-knob", 2);
+	atc.transponderPanel.modeSwitch(3);
 	setprop("/systems/fadec/power-avail", 1);
 	setprop("/systems/fadec/powered-time", -310);
 	setprop("/controls/lighting/turnoff-light-switch", 1);
@@ -495,6 +499,8 @@ var takeoff = func {
 				setprop("/controls/flight/flap-lever", 1);
 				setprop("/controls/flight/flap-pos", 2);
 				setprop("/controls/flight/flap-txt", "1+F");
+				setprop("/controls/atc/mode-knob", 4);
+				atc.transponderPanel.modeSwitch(5);
 				libraries.flaptimer.start();
 				setprop("/controls/flight/elevator-trim", -0.07);
 				systems.arm_autobrake(3);

Models/FlightDeck/a320.flightdeck.xml

@@ -350,6 +350,8 @@
 		<object-name>arpt_led</object-name>
 		<object-name>arpt_led.001</object-name>
 		<object-name>a-thr_led</object-name>
+		<object-name>atc-code</object-name>
+		<object-name>atc-test</object-name>
 		<object-name>audio_att_led</object-name>
 		<object-name>audio_att_sgn</object-name>
 		<object-name>audio_call_hf2_led</object-name>
@@ -443,11 +445,25 @@
 		</condition>
 	</animation>
 	
+	<animation>
+		<type>select</type>
+		<object-name>atc-code</object-name>
+		<condition>
+			<not>
+				<equals>
+					<property>controls/switches/annun-test</property>
+					<value>1</value>
+				</equals>
+			</not>
+		</condition>
+	</animation>
+	
 	<!-- Not Yet Implemented Lights -->
 	<!-- Remove from this animation once you simulate -->
 	<animation>
 		<type>select</type>
 		<object-name>alt-text-test</object-name>
+		<object-name>atc-test</object-name>
 		<object-name>audio_att_sgn</object-name>
 		<object-name>audio_call_hf2_led</object-name>
 		<object-name>audio_call_hf1_led</object-name>
@@ -5912,6 +5928,8 @@
 		<object-name>hdg-text-test</object-name>
 		<object-name>alt-text-test</object-name>
 		<object-name>vs-text-test</object-name>
+		<object-name>atc-code</object-name>
+		<object-name>atc-test</object-name>
 		<object-name>fpa-text</object-name>
 		<object-name>qnh-inhg</object-name>
 		<object-name>qnh-hpa</object-name>

Models/Instruments/Pedestal_up/Pedestal_up.xml

@@ -9,7 +9,23 @@
 	<animation>
 		<name>Panel lighting</name>
 		<type>material</type>
+		<object-name>atc_0</object-name>
+		<object-name>atc_1</object-name>
+		<object-name>atc_2</object-name>
+		<object-name>atc_3</object-name>
+		<object-name>atc_4</object-name>
+		<object-name>atc_5</object-name>
+		<object-name>atc_6</object-name>
+		<object-name>atc_7</object-name>
+		<object-name>atc_abv</object-name>
 		<object-name>atc_body</object-name>
+		<object-name>atc_clr</object-name>
+		<object-name>atc_fail</object-name>
+		<object-name>atc_ident</object-name>
+		<object-name>atc_screen</object-name>
+		<object-name>atc_stby</object-name>
+		<object-name>atc_sys</object-name>
+		<object-name>atc_thrt</object-name>
 		<object-name>ecam_body</object-name>
 		<object-name>ecam_switch_body</object-name>
 		<object-name>engine_body</object-name>
@@ -79,7 +95,6 @@
 		<object-name>radar_glare</object-name>
 	</effect>
 	
-	
 	<effect>
 		<inherits-from>Aircraft/IDG-A32X/Models/Effects/cockpit-irradiance</inherits-from>
 		<object-name>ecam_body</object-name>
@@ -106,4 +121,309 @@
 		<object-name>vu112_aids</object-name>
 		<object-name>vu112_dfdr</object-name>
 	</effect>
+	
+	<effect>
+		<inherits-from>Aircraft/IDG-A32X/Models/Effects/cockpit-irradiance</inherits-from>
+		<object-name>atc_0</object-name>
+		<object-name>atc_1</object-name>
+		<object-name>atc_2</object-name>
+		<object-name>atc_3</object-name>
+		<object-name>atc_4</object-name>
+		<object-name>atc_5</object-name>
+		<object-name>atc_6</object-name>
+		<object-name>atc_7</object-name>
+		<object-name>atc_abv</object-name>
+		<object-name>atc_body</object-name>
+		<object-name>atc_clr</object-name>
+		<object-name>atc_fail</object-name>
+		<object-name>atc_ident</object-name>
+		<object-name>atc_screen</object-name>
+		<object-name>atc_stby</object-name>
+		<object-name>atc_sys</object-name>
+		<object-name>atc_thrt</object-name>
+	</effect>
+	
+	<text>
+		<name>atc-code</name>
+		<offsets>
+			<x-m>-0.01279</x-m>
+			<y-m>0.20</y-m>
+			<z-m>-0.13391</z-m>
+			<heading-deg>90</heading-deg>
+		</offsets>
+		<alignment>left-center</alignment>
+		<axis-alignment>xy-plane</axis-alignment>
+		<type type="string">text-value</type>
+		<property type="string">/systems/atc/transponder-code</property>
+		<format>%s</format>
+		<truncate type="bool">false</truncate>
+		<font type="string">led.txf</font>
+		<draw-text type="bool">true</draw-text>
+		<draw-alignment type="bool">false</draw-alignment>
+		<draw-boundingbox type="bool">false</draw-boundingbox>
+		<character-size>0.009</character-size>
+		<font-resolution>
+			<width type="int">32</width>
+			<height type="int">32</height>
+		</font-resolution>
+	</text>
+	
+	<text>
+		<name>atc-test</name>
+		<offsets>
+			<x-m>-0.01279</x-m>
+			<y-m>0.20</y-m>
+			<z-m>-0.13391</z-m>
+			<heading-deg>90</heading-deg>
+		</offsets>
+		<alignment>left-center</alignment>
+		<axis-alignment>xy-plane</axis-alignment>
+		<type type="string">literal</type>
+		<text type="string">8888</text>
+		<font type="string">led.txf</font>
+		<draw-text type="bool">true</draw-text>
+		<draw-alignment type="bool">false</draw-alignment>
+		<draw-boundingbox type="bool">false</draw-boundingbox>
+		<character-size>0.009</character-size>
+		<font-resolution>
+			<width type="int">32</width>
+			<height type="int">32</height>
+		</font-resolution>
+	</text>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_0</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(0);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_1</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(1);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_2</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(2);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_3</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(3);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_4</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(4);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_5</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(5);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_6</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(6);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_7</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.keypad(7);</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_clr</object-name>
+		<action>
+			<button>0</button>
+			<repeatable>false</repeatable>
+			<binding>
+				<command>nasal</command>
+				<script>atc.transponderPanel.clearKey();</script>
+			</binding>
+		</action>
+	</animation>
+	
+	<animation>
+		<type>rotate</type>
+		<object-name>atc_sys</object-name>
+		<factor>-30</factor>
+		<offset-deg>30</offset-deg>
+		<center>
+            <x-m>-0.003352</x-m>
+			<y-m>0.131446</y-m>
+			<z-m>-0.13275</z-m>
+        </center>
+		<axis>
+			<x>0</x>
+			<y>0</y>
+			<z>1</z>
+		</axis>
+		<property>controls/atc/system-knob</property>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_sys</object-name>
+		<action>
+			<button>0</button>
+            <binding>
+                <command>property-cycle</command>
+                <property>controls/atc/system-knob</property>
+                <value>0</value>
+				<value>1</value>
+            </binding>
+			<binding>
+                <command>nasal</command>
+                <script>atc.transponderPanel.atcSwitch(getprop("/controls/atc/system-knob") + 1);</script>
+            </binding>
+        </action>
+	</animation>
+	
+	<animation>
+		<type>rotate</type>
+		<object-name>atc_stby</object-name>
+		<factor>-35</factor>
+		<offset-deg>70</offset-deg>
+		<center>
+            <x-m>0.01146</x-m>
+			<y-m>0.213663</y-m>
+			<z-m>-0.13086</z-m>
+        </center>
+		<axis>
+			<x>0</x>
+			<y>0</y>
+			<z>1</z>
+		</axis>
+		<property>controls/atc/mode-knob</property>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_stby</object-name>
+		<action>
+			<button>0</button>
+			<button>3</button>
+            <binding>
+                <command>property-cycle</command>
+                <property>controls/atc/mode-knob</property>
+                <value>0</value>
+				<value>1</value>
+				<value>2</value>
+				<value>3</value>
+				<value>4</value>
+            </binding>
+			<binding>
+                <command>nasal</command>
+                <script>atc.transponderPanel.modeSwitch(getprop("/controls/atc/mode-knob") + 1);</script>
+            </binding>
+        </action>
+		<action>
+			<button>1</button>
+			<button>4</button>
+            <binding>
+                <command>property-cycle</command>
+                <property>controls/atc/mode-knob</property>
+				<value>4</value>
+				<value>3</value>
+				<value>2</value>
+				<value>1</value>
+                <value>0</value>
+            </binding>
+			<binding>
+                <command>nasal</command>
+                <script>atc.transponderPanel.modeSwitch(getprop("/controls/atc/mode-knob") - 1);</script>
+            </binding>
+        </action>
+	</animation>
+	
+	<animation>
+		<type>pick</type>
+		<object-name>atc_ident</object-name>
+		<action>
+			<button>0</button>
+			<binding>
+                <command>nasal</command>
+                <script>atc.transponderPanel.identSwitch();</script>
+            </binding>
+        </action>
+	</animation>
+	
+	<animation>
+		<type>select</type>
+		<object-name>atc_fail</object-name>
+		<condition>
+			<and>
+				<property>systems/atc/failed</property>
+				<greater-than>
+					<property>systems/electrical/bus/dc-ess</property>
+					<value>25</value>
+				</greater-than>
+			</and>
+		</condition>
+	</animation>
 </PropertyList>

Nasal/atc.nas

@@ -0,0 +1,245 @@
+# A3XX ATC Panel
+# Jonathan Redpath
+
+# Copyright (c) 2019 Jonathan Redpath
+
+var idCode = props.globals.getNode("/instrumentation/transponder/id-code", 1);
+
+var guiModes = ['OFF', 'STANDBY', 'TEST', 'GROUND', 'ON', 'ALTITUDE'];
+var guiNode = props.globals.getNode("/sim/gui/dialogs/radios/transponder-mode", 1);
+var forLoopFlag = 0;
+
+var Transponder = {
+	mode: 0,
+	code: "2000",
+	selected: 0,
+	electricalSrc: "",
+	activeADIRS: 0,
+	condition: 0,
+	failed: 0,
+	codeDigitsNodes: [props.globals.getNode("/instrumentation/transponder/inputs/digit[0]", 1), props.globals.getNode("/instrumentation/transponder/inputs/digit[1]", 1), props.globals.getNode("/instrumentation/transponder/inputs/digit[2]", 1), props.globals.getNode("/instrumentation/transponder/inputs/digit[3]", 1)],
+	serviceableNode: props.globals.getNode("/instrumentation/transponder/serviceable", 1),
+	knobNode: props.globals.getNode("instrumentation/transponder/inputs/knob-mode", 1),
+	identNode: props.globals.getNode("/instrumentation/transponder/inputs/ident-btn", 1),
+	wowNode: props.globals.getNode("/fdm/jsbsim/position/wow"),
+	ac1Node: props.globals.getNode("/systems/electrical/bus/ac1", 1),
+	tcasNode: props.globals.getNode("/instrumentation/tcas/inputs/mode"),
+	aglNode: props.globals.getNode("/position/gear-agl-ft", 1),
+	electricNode: props.globals.getNode("/systems/electrical/outputs/transponder", 1),
+	new: func(elecSrc, ADIRS) {
+		var t = {parents:[Transponder]};
+		t.mode = 1;
+		t.code = "2000";
+		t.selected = 0;
+		t.condition = 100;
+		t.failed = 0;
+		t.electricalSrc = props.globals.getNode(elecSrc, 1);
+		t.activeADIRS = ADIRS;
+		
+		return t;
+	},
+	update: func() {
+		# TCAS - on seperate electrical source, so has to be before transponder electrical checking
+		if (me.ac1Node.getValue() < 110) {
+			me.tcasNode.setValue(0); # off
+		} else {
+			if (me.mode >= 1 and me.mode <= 3) {
+				me.tcasNode.setValue(1); # stby
+			} else if (me.mode == 4 or (me.mode == 5 and me.aglNode.getValue() < 1000)) {
+				me.tcasNode.setValue(2); # TA only
+			} else if (me.mode == 5) {
+				me.tcasNode.setValue(3); # TA/RA
+			}
+		}
+		
+		if (me.electricalSrc.getValue() > 110 and me.failed == 0) {
+			me.condition = 100;
+			transponderPanel.atcFailLight(0);
+			me.electricNode.setValue(28);
+			transponderPanel.modeSwitch(transponderPanel.modeSel);
+		} else {
+			me.condition = 0;
+			transponderPanel.atcFailLight(1);
+			me.setMode(0); # off
+			if (me.electricalSrc.getValue() < 110) {
+				me.electricNode.setValue(0);
+			} else {
+				me.electricNode.setValue(28);
+			}
+		}
+		
+		if (me.condition == 0 or me.selected != 1) {
+			return;
+		}
+		
+		if (me.mode == 1) {
+			if (me.knobNode.getValue() != 1) {
+				me.setMode(1); # stby
+			}
+		} else if (me.mode == 2) {
+			if (me.knobNode.getValue() != 4) {
+				me.setMode(4); # on
+			}
+		} else if (me.mode >= 3) {
+			if (me.wowNode.getBoolValue()) {
+				if (me.knobNode.getValue() != 3) {
+					me.setMode(3); # gnd
+				}
+			} else {
+				if (me.knobNode.getValue() != 5) {
+					me.setMode(5); # alt
+				}
+			}
+		}
+	},
+	switchADIRS: func(newADIRS) {
+		if (newADIRS < 1 or newADIRS > 3) {
+			return;
+		}
+		me.activeADIRS = newADIRS;
+	},
+	modeSwitch: func(newMode) {
+		me.mode = newMode;
+	},
+	setCode: func(newCode) {
+		me.code = newCode;
+		forLoopFlag = 1;
+		for (index = 0; index < 4; index = index + 1) {
+			me.codeDigitsNodes[3 - index].setValue(substr(me.code, index, 1));
+		}
+		forLoopFlag = 0;
+	},
+	setMode: func(m) {
+		me.knobNode.setValue(m);
+        guiNode.setValue(guiModes[m]);
+	},
+	fail: func() {
+		me.failed = 1;
+		me.serviceableNode.setBoolValue(0);
+		transponderPanel.atcFailLight(1);
+	},
+	restore: func() {
+		me.failed = 0;
+		me.serviceableNode.setBoolValue(1);
+		transponderPanel.atcFailLight(0);
+	},
+	ident: func() {
+		me.identNode.setValue(0);
+		settimer(func() {
+			me.identNode.setValue(1);
+		}, 0.1);
+	},
+};
+
+var transponderPanel = {
+	atcSel: 1,
+	modeSel: 1,
+	identBtn: 0,
+	code: "2000",
+	codeDisp: "2000",
+	codeProp: props.globals.initNode("/systems/atc/transponder-code", "2000", "STRING"),
+	failLight: 0,
+	clearFlag: 0,
+	keypad: func(keyNum) {
+		if (props.globals.getNode("/controls/switches/annun-test", 1).getBoolValue() or props.globals.getNode("/systems/electrical/bus/dc-ess", 1).getValue() < 25) {
+			return;
+		}
+		if (keyNum < 0 or keyNum > 7) {
+			return;
+		}
+		
+		if (size(me.codeDisp) < 3) {
+			me.codeDisp = me.codeDisp ~ keyNum;
+			me.codeProp.setValue(sprintf("%s", me.codeDisp));
+		} elsif (size(me.codeDisp) == 3) {
+			me.codeDisp = me.codeDisp ~ keyNum;
+			me.codeProp.setValue(sprintf("%s", me.codeDisp));
+			me.code = me.codeDisp;
+			Transponders.vector[me.atcSel - 1].setCode(me.code);
+		}
+	},
+	clearKey: func() {
+		if (props.globals.getNode("/controls/switches/annun-test", 1).getBoolValue() or props.globals.getNode("/systems/electrical/bus/dc-ess", 1).getValue() < 25) {
+			return;
+		}
+		if (me.codeDisp != "") {
+			if (me.clearFlag == 0) {
+				me.codeDisp = left(me.codeDisp, size(me.codeDisp) - 1);
+				me.codeProp.setValue(sprintf("%s", me.codeDisp));
+				me.clearFlag = 1;
+			} else {
+				me.codeDisp = "";
+				me.codeProp.setValue(sprintf("%s", me.codeDisp));
+			}
+		}
+	},
+	atcSwitch: func(newSel) {
+		if (newSel < 1 or newSel > 2) { 
+			return;
+		}
+		me.atcSel = newSel;
+		
+		# update code
+		if (me.newSel = 1) {
+			Transponders.vector[1].selected = 0;
+		} else {
+			Transponders.vector[0].selected = 0;
+		}
+		
+		Transponders.vector[me.atcSel - 1].selected = 1;
+		me.code = Transponders.vector[me.atcSel - 1].code;
+		me.codeDisp = me.code;
+		me.codeProp.setValue(sprintf("%s", me.codeDisp));
+		Transponders.vector[me.atcSel - 1].setCode(me.code); # update transmitted code to other transponders code
+		me.clearFlag = 0;
+		
+		# update newly selected transponder
+		Transponders.vector[me.atcSel - 1].modeSwitch(me.modeSel);
+		me.atcFailLight(Transponders.vector[me.atcSel - 1].failed);
+	},
+	modeSwitch: func(newMode) {
+		if (newMode < 0 or newMode > 5) {
+			return;
+		}
+		me.modeSel = newMode;
+		Transponders.vector[me.atcSel - 1].modeSwitch(me.modeSel);
+	},
+	atcFailLight: func(newFail) {
+		if (newFail < 0 or newFail > 1) {
+			return;
+		}
+		me.failLight = newFail;
+		props.globals.getNode("/systems/atc/failed").setBoolValue(me.failLight);
+	},
+	identSwitch: func() {
+		Transponders.vector[me.atcSel - 1].ident();
+	},
+	fastSetCode: func(newCode) {
+		if (size(newCode) != 4 or size(me.codeDisp) != 4) {
+			return;
+		}
+		me.clearFlag = 0;
+		me.code = newCode;
+		me.codeDisp = me.code;
+		me.codeProp.setValue(sprintf("%s", me.codeDisp));
+		Transponders.vector[me.atcSel - 1].setCode(me.code);
+	}
+};
+
+var init = func() {
+	transponderPanel.atcSwitch(1);
+	transponderTimer.start();
+}
+
+# Handler for code change from generic dialog
+setlistener("/instrumentation/transponder/id-code", func {
+	if (transponderPanel.code != idCode.getValue() and forLoopFlag == 0) {
+		transponderPanel.fastSetCode(sprintf("%04d", idCode.getValue()));
+	}
+}, 0, 0);
+
+var Transponders = std.Vector.new([Transponder.new("/systems/electrical/bus/ac-ess-shed", 1), Transponder.new("/systems/electrical/bus/ac2", 2)]);
+	
+var transponderTimer = maketimer(0.1, func() {
+	Transponders.vector[transponderPanel.atcSel - 1].update();
+});

Nasal/electrical.nas

@@ -731,7 +731,6 @@ var ELEC = {
 			setprop("/systems/electrical/outputs/stobe-lights", 0);
 			setprop("/systems/electrical/outputs/tacan", 0);
 			setprop("/systems/electrical/outputs/taxi-lights", 0);
-			setprop("/systems/electrical/outputs/transponder", 0);
 			setprop("/systems/electrical/outputs/turn-coordinator", 0);
 			setprop("/controls/lighting/fcu-panel-norm", 0);
 			setprop("/controls/lighting/main-panel-norm", 0);
@@ -767,7 +766,6 @@ var ELEC = {
 			setprop("/systems/electrical/outputs/stobe-lights", dc_volt_std);
 			setprop("/systems/electrical/outputs/tacan", dc_volt_std);
 			setprop("/systems/electrical/outputs/taxi-lights", dc_volt_std);
-			setprop("/systems/electrical/outputs/transponder", dc_volt_std);
 			setprop("/systems/electrical/outputs/turn-coordinator", dc_volt_std);
 			setprop("/controls/lighting/fcu-panel-norm", getprop("/controls/lighting/fcu-panel-knb"));
 			setprop("/controls/lighting/main-panel-norm", getprop("/controls/lighting/main-panel-knb"));

Nasal/libraries.nas

@@ -205,6 +205,7 @@ var systemsInit = func {
 	rmp.init();
 	acp.init();
 	ecam.ECAM_controller.init();
+	atc.init();
 }
 
 setlistener("/sim/signals/fdm-initialized", func {

Systems/instrumentation.xml

@@ -29,6 +29,8 @@
 		<static-pressure>/systems/static/pressure-inhg</static-pressure>
 		<quantum>0</quantum>
 		<tau>0</tau>
+		<encode-mode-c>1</encode-mode-c>
+		<encode-mode-s>1</encode-mode-s>
 	</altimeter>
 	
 	<attitude-indicator>
@@ -134,7 +136,9 @@
 	<transponder>
 		<name>transponder</name>
 		<number>0</number>
+		<mode>2</mode>
 		<mode-c-altitude>/instrumentation/encoder/mode-c-alt-ft</mode-c-altitude>
+		<mode-s-altitude>/instrumentation/encoder/mode-s-alt-ft</mode-s-altitude>
 	</transponder>
 	
 	<turn-indicator>
@@ -156,6 +160,11 @@
 	<tcas>
 		<name>tcas</name>
 		<number>0</number>
+		<!--<vertical-range>9900</vertical-range>
+		<lateral-range>30</lateral-range>
+		<intruder-use-self-alt>1</intruder-use-self-alt>
+		<intruder-inhb-alt>380</intruder-inhb-alt>
+		<intruder-self-alt>1700</intruder-self-alt> uncomment for 2019.3 -->
 	</tcas>
 	
 	<radar>