Handling the spectatable unit list

addons/spectator/XEH_preInit.sqf

@@ -9,6 +9,7 @@ PREP(handleMouse);
 PREP(handleRespawn);
 PREP(moduleSpectator);
 PREP(setSpectator);
+PREP(updateUnits);
 PREP(updateView);
 
 ADDON = true;

addons/spectator/functions/fnc_handleInterface.sqf

@@ -137,7 +137,7 @@ switch (toLower _mode) do {
         (_display displayCtrl IDC_VIEW) ctrlSetText (["FREE","FIRST","THIRD"] select GVAR(camMode));
 
         // Populate unit tree
-        //["onload",_display displayCtrl IDC_TREE] call FUNC(updateUnits);
+        call FUNC(updateUnits);
 
         // Hacky way to enable keybindings
         //_display displayAddEventHandler ["KeyUp", {[_this,'keyup'] call CBA_events_fnc_keyHandler}];

addons/spectator/functions/fnc_updateUnits.sqf

@@ -0,0 +1,29 @@
+#include "script_component.hpp"
+
+// Remove dead and null units
+GVAR(unitList) - [objNull];
+GVAR(unitList) - allDead;
+
+// Fetch new units for list
+{
+    if (
+        (simulationEnabled _x) &&
+        {(side _x) in [west,east,resistance,civilian] } &&
+        //{!isObjectHidden _unit} && // (currently dev branch only)
+        {!(_x getVariable [QGVAR(isSpectator), false])} // Who watches the watchmen?
+    ) then {
+        GVAR(unitList) pushBack _x;
+    };
+} forEach (allUnits - GVAR(unitList));
+
+disableSerialization;
+_display = GETUVAR(GVAR(display),displayNull);
+_ctrl = _display displayCtrl IDC_TREE;
+
+// Clear the tree
+_ctrl tvCollapse [];
+
+// Update the tree
+{
+   // _ctrl tvAdd [[,_forEachIndex], name _x];
+} forEach GVAR(unitList);