P-51D JSBSim -Fix minor amination issue with remote ptt button

Aircraft/Instruments-3d/SCR-522C/Nasal/SCR-522C.nas

@@ -22,6 +22,7 @@ var tr_node = props.globals.initNode("instrumentation/comm/SCR-522C/tr", 0, "INT
 props.globals.initNode("instrumentation/comm/SCR-522C/frequencies/channel", "", "STRING");
 props.globals.initNode("instrumentation/comm/SCR-522C/mask", 0, "BOOL");
 props.globals.initNode("instrumentation/comm/SCR-522C/tr-lock", 0, "BOOL");
+props.globals.initNode("instrumentation/comm/SCR-522C/remote-pushed", 0, "BOOL");
 
 # turn the radio off
 props.globals.initNode("instrumentation/comm/serviceable", 0, "BOOL");
@@ -52,6 +53,7 @@ controls.ptt = func {
        setprop("instrumentation/comm/ptt", arg[0]);                                # let remote ptt control transmitter
     else                                                                           # otherwise
        setprop("instrumentation/comm/ptt", 0);                                     # the remote ptt does nothing
+    setprop("instrumentation/comm/SCR-522C/remote-pushed", arg[0]);                # use to animate remote ptt button
 }
 
 # =============================== listeners ===============================

Aircraft/Instruments-3d/SCR-522C/README

@@ -1,8 +1,8 @@
 To enable full functionality of the SCR-522C/TR1133 radio there are several things 
-that you will need to do.  
+that need to be done.  
 
-First you will need to change the <nasal> section of your *set.xml file so that it 
+First change the <nasal> section of your *set.xml file so that it looks like the 
-looks like the following.  
+following.  
 
 <nasal>
    <!-- your other nasal files -->
@@ -12,13 +12,17 @@ looks like the following.
    </SCR_522C>
 </nasal>
 
-This will enable the F12 key to bring up the frequencies dialog. It will also over ride the 
+Menu:
-Equipment --> radios menu item so that it brings up the correct menu for the SCR-522C/TR1133
-radios.  This also implements other radio features like support for a remote TR switch,  the 
-TR switch on the BC-602-A control box,  TR switch lock, channel switching, power switch and 
-so on.
 
-For dark conditions when cabin/cockpit illumination is used all of the radio models object 
+The above will enable the F12 key to bring up the SCR-522C specific frequencies dialog. It 
+will also over ride the Equipment --> radios menu item so that it brings up the correct 
+menu for the SCR-522C/TR1133 radios.  This also implements other radio features like support 
+for a remote TR switch,  the TR switch on the BC-602-A control box,  TR switch lock, channel 
+switching, power switch and so on.
+
+Animation:
+
+For dark conditions when cabin/cockpit illumination is used all of the radio models objects 
 are illuminated in response to 
 
 <property>/controls/lighting/cabin-norm</property>
@@ -26,4 +30,26 @@ are illuminated in response to
 If you are using a different property for you cabin/cockpit lights you will need to map your 
 lighting property to /controls/lighting/cabin-norm.
 
+If your aircraft needs remote ptt button animation this should be linked to
+
+instrumentation/comm/SCR-522C/remote-pushed 
+
+Since the Nasal script reimplements controls.ptt() and instrumentation/comm/ptt only becomes true
+if the radio is turned on.  Using the property above to control the animation of the remote ptt 
+button will result in the botton moving when ever the user pushes what ever key/button they have
+setup to call controls.ptt().  An example of what this might look like is:
+    
+ <animation>
+  <type>translate</type>
+  <object-name>MicButton</object-name>
+  <property>instrumentation/comm/SCR-522C/remote-pushed</property>
+  <factor>-0.007</factor>
+  <axis>
+   <x>0</x>
+   <y>1</y>
+   <z>0</z>
+  </axis>
+ </animation>
+ 
+