New function to precisely control spectatable sides

addons/spectator/XEH_preInit.sqf

@@ -18,11 +18,13 @@ PREP(setSpectator);
 PREP(transitionCamera);
 PREP(toggleInterface);
 PREP(updateCameraModes);
+PREP(updateSpectatableSides);
 PREP(updateUnits);
 PREP(updateVisionModes);
 
 // Permanent variables
 GVAR(availableModes) = [0,1,2];
+GVAR(availableSides) = [west,east,resistance,civilian];
 GVAR(availableVisions) = [-2,-1,0,1];
 
 GVAR(camMode) = 0;

addons/spectator/functions/fnc_updateSpectatableSides.sqf

@@ -0,0 +1,33 @@
+/*
+ * Author: SilentSpike
+ * Adds or removes sides from the selection available to spectate by the local player.
+ * Note that the side filter setting is applied to the available sides dynamically.
+ *
+ * Default selection is [west,east,resistance,civilian]
+ *
+ * Arguments:
+ * 0: Sides to add <ARRAY>
+ * 1: Sides to remove <ARRAY>
+ *
+ * Return Value:
+ * Spectatable sides <ARRAY>
+ *
+ * Example:
+ * [[west], [east,civilian]] call ace_spectator_fnc_updateSpectatableSides
+ *
+ * Public: Yes
+ */
+
+#include "script_component.hpp"
+
+params [["_addSides",[],[[]]], ["_removeSides",[],[[]]]];
+
+// Add and remove sides
+_addSides append (GVAR(availableSides) - _removeSides);
+
+// Only need array of unique sides
+_addSides arrayIntersect _addSides;
+
+GVAR(availableSides) = _addSides;
+
+_addSides

addons/spectator/functions/fnc_updateUnits.sqf

@@ -45,7 +45,7 @@ _cond = [{_this == (side group player)},{(_this getFriend (side group player)) >
     if (_x call _cond) then {
         _sides pushBack _x;
     };
-} forEach [west,east,resistance,civilian];
+} forEach GVAR(availableSides);
 
 // Filter units and append to list
 _filteredUnits = [];