[MIRROR] Frequency locks Confessional intercoms, but an emag can bypass it [MDB IGNORE] (#17185)

* Frequency locks Confessional intercoms, but an emag can bypass it (#70745)

* Confessional intercoms are frequency locked, but can be emagged to bypass the restriction.

* Frequency locks Confessional intercoms, but an emag can bypass it

Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>

code/__DEFINES/radio.dm

@@ -121,3 +121,10 @@
 
 ///give this to can_receive to specify that there is no restriction on what z level this signal is sent to
 #define RADIO_NO_Z_LEVEL_RESTRICTION 0
+
+/// Radio frequency is unlocked and can be ajusted by anyone
+#define RADIO_FREQENCY_UNLOCKED 0
+/// Radio frequency is locked, unchangeable by players
+#define RADIO_FREQENCY_LOCKED 1
+/// Radio frequency is locked and unchangeable, but can be unlocked by an emag
+#define RADIO_FREQENCY_EMAGGABLE_LOCK 2

code/game/objects/items/devices/radio/intercom.dm

@@ -39,6 +39,15 @@
 	else
 		. += span_notice("It's <i>unscrewed</i> from the wall, and can be <b>detached</b>.")
 
+	if(anonymize)
+		. += span_notice("Speaking through this intercom will anonymize your voice.")
+
+	if(freqlock == RADIO_FREQENCY_UNLOCKED)
+		if(obj_flags & EMAGGED)
+			. += span_warning("Its frequency lock has been shorted...")
+	else
+		. += span_notice("It has a frequency lock set to [frequency/10].")
+
 /obj/item/radio/intercom/screwdriver_act(mob/living/user, obj/item/tool)
 	if(unscrewed)
 		user.visible_message(span_notice("[user] starts tightening [src]'s screws..."), span_notice("You start screwing in [src]..."))
@@ -112,6 +121,29 @@
 	. = ..()
 	AreaPowerCheck() // Make sure the area/local APC is powered first before we actually turn back on.
 
+/obj/item/radio/intercom/emag_act(mob/user, obj/item/card/emag/emag_card)
+	if(obj_flags & EMAGGED)
+		return
+
+	switch(freqlock)
+		// Emagging an intercom with an emaggable lock will remove the lock
+		if(RADIO_FREQENCY_EMAGGABLE_LOCK)
+			balloon_alert(user, "frequency lock cleared")
+			playsound(src, SFX_SPARKS, 75, TRUE, SILENCED_SOUND_EXTRARANGE)
+			freqlock = RADIO_FREQENCY_UNLOCKED
+			obj_flags |= EMAGGED
+
+		// A fully locked one will do nothing, as locked is intended to be used for stuff that should never be changed
+		if(RADIO_FREQENCY_LOCKED)
+			balloon_alert(user, "can't override frequency lock!")
+			playsound(src, 'sound/machines/buzz-two.ogg', 50, FALSE, SILENCED_SOUND_EXTRARANGE)
+
+		// Emagging an unlocked one will do nothing, for now
+		else
+			return
+
+	return ..()
+
 /obj/item/radio/intercom/update_icon_state()
 	icon_state = on ? initial(icon_state) : "intercom-p"
 	return ..()
@@ -148,7 +180,9 @@ MAPPING_DIRECTIONAL_HELPERS(/obj/item/radio/intercom, 26)
 
 /obj/item/radio/intercom/chapel
 	name = "Confessional intercom"
+	desc = "Talk through this... to confess your many sins. Conceals your voice, to keep them secret."
 	anonymize = TRUE
+	freqlock = RADIO_FREQENCY_EMAGGABLE_LOCK
 
 /obj/item/radio/intercom/chapel/Initialize(mapload, ndir, building)
 	. = ..()

code/game/objects/items/devices/radio/radio.dm

@@ -52,7 +52,7 @@
 	/// If true, subspace_transmission can be toggled at will.
 	var/subspace_switchable = FALSE
 	/// Frequency lock to stop the user from untuning specialist radios.
-	var/freqlock = FALSE
+	var/freqlock = RADIO_FREQENCY_UNLOCKED
 	/// If true, broadcasts will be large and BOLD.
 	var/use_command = FALSE
 	/// If true, use_command can be toggled at will.
@@ -368,7 +368,7 @@
 	data["frequency"] = frequency
 	data["minFrequency"] = freerange ? MIN_FREE_FREQ : MIN_FREQ
 	data["maxFrequency"] = freerange ? MAX_FREE_FREQ : MAX_FREQ
-	data["freqlock"] = freqlock
+	data["freqlock"] = freqlock != RADIO_FREQENCY_UNLOCKED
 	data["channels"] = list()
 	for(var/channel in channels)
 		data["channels"][channel] = channels[channel] & FREQ_LISTENING
@@ -386,7 +386,7 @@
 		return
 	switch(action)
 		if("frequency")
-			if(freqlock)
+			if(freqlock != RADIO_FREQENCY_UNLOCKED)
 				return
 			var/tune = params["tune"]
 			var/adjust = text2num(params["adjust"])

code/modules/antagonists/nukeop/outfits.dm

@@ -30,7 +30,7 @@
 		return
 	var/obj/item/radio/radio = nukie.ears
 	radio.set_frequency(FREQ_SYNDICATE)
-	radio.freqlock = TRUE
+	radio.freqlock = RADIO_FREQENCY_LOCKED
 	if(command_radio)
 		radio.command = TRUE
 		radio.use_command = TRUE

code/modules/capture_the_flag/ctf_classes.dm

@@ -54,7 +54,7 @@
 	if(has_radio)
 		var/obj/item/radio/headset = human_to_equip.ears
 		headset.set_frequency(team_radio_freq)
-		headset.freqlock = TRUE
+		headset.freqlock = RADIO_FREQENCY_LOCKED
 		headset.independent = TRUE
 	human_to_equip.dna.species.stunmod = 0
 

code/modules/clothing/outfits/ert.dm

@@ -23,7 +23,7 @@
 
 	var/obj/item/radio/headset/R = H.ears
 	R.set_frequency(FREQ_CENTCOM)
-	R.freqlock = TRUE
+	R.freqlock = RADIO_FREQENCY_LOCKED
 	if(additional_radio)
 		R.keyslot2 = new additional_radio()
 		R.recalculateChannels()
@@ -460,7 +460,7 @@
 
 	var/obj/item/radio/R = H.ears
 	R.set_frequency(FREQ_CENTCOM)
-	R.freqlock = TRUE
+	R.freqlock = RADIO_FREQENCY_LOCKED
 	var/obj/item/card/id/W = H.wear_id
 	W.registered_name = H.real_name
 	W.update_label()

code/modules/clothing/outfits/standard.dm

@@ -26,7 +26,7 @@
 
 	var/obj/item/radio/headset/R = H.ears
 	R.set_frequency(FREQ_CENTCOM)
-	R.freqlock = TRUE
+	R.freqlock = RADIO_FREQENCY_LOCKED
 	..()
 
 /datum/outfit/space
@@ -135,7 +135,7 @@
 	var/obj/item/radio/outfit_radio = equipped.ears
 	if(outfit_radio)
 		outfit_radio.set_frequency(FREQ_SYNDICATE)
-		outfit_radio.freqlock = TRUE
+		outfit_radio.freqlock = RADIO_FREQENCY_LOCKED
 
 	var/obj/item/card/id/outfit_id = equipped.wear_id
 	if(outfit_id)