adds warning messages when CAS sonic boom happens and makes the boom …

…fallof slower (#5410)

# About the pull request

adds more warnings to aproaching cas

# Explain why it's good for the game

gives xenos even more clues about incoming firemission, should prevent
silent cas unless you are runner who runs in straight form the other
sife of map directly into FM

# Testing Photographs and Procedure
<details>
<summary>Screenshots & Videos</summary>

Put screenshots and videos here with an empty line between the
screenshots and the `<details>` tags.

</details>


# Changelog
:cl:
add: added messages when the CAS sonic boom is played
soundadd: reduced volume falloff of CAS sonic boom
/:cl:

---------

Co-authored-by: vincibrv <[email protected]>
Co-authored-by: Doubleumc <[email protected]>
Co-authored-by: SabreML <[email protected]>
Co-authored-by: Drathek <[email protected]>

code/game/cas_manager/datums/cas_fire_envelope.dm

@@ -259,7 +259,20 @@
 		mission_error = "Target is off bounds or obstructed."
 		return
 	change_current_loc(target_turf)
-	playsound(target_turf, soundeffect, 70, TRUE, 50)
+	playsound(source = target_turf, soundin = soundeffect, vol = 70, vary = TRUE, sound_range = 50, falloff = 8)
+
+	for(var/mob/mob in range(15, target_turf))
+		var/ds_identifier = "LARGE BIRD"
+		var/fm_identifier = "SPIT FIRE"
+		if (mob.mob_flags & KNOWS_TECHNOLOGY)
+			ds_identifier = "DROPSHIP"
+			fm_identifier = "FIRE"
+
+		mob.show_message( \
+			SPAN_HIGHDANGER("YOU HEAR THE [ds_identifier] ROAR AS IT PREPARES TO [fm_identifier] NEAR YOU!"),SHOW_MESSAGE_VISIBLE, \
+			SPAN_HIGHDANGER("YOU HEAR SOMETHING FLYING CLOSER TO YOU!") , SHOW_MESSAGE_AUDIBLE \
+		)
+
 	sleep(flyto_period)
 	stat = FIRE_MISSION_STATE_FIRING
 	mission.execute_firemission(linked_console, target_turf, dir, fire_length, step_delay, src)
@@ -311,10 +324,10 @@
 
 /datum/cas_fire_envelope/uscm_dropship
 	fire_length = 12
-	grace_period = 50 //5 seconds
-	flyto_period = 50 //five seconds
-	flyoff_period = 50 //FIVE seconds
-	cooldown_period = 100 //f~ I mean, 10 seconds
+	grace_period = 5 SECONDS 
+	flyto_period = 4 SECONDS //sleep in the FM itself has been increased by one more second
+	flyoff_period = 5 SECONDS
+	cooldown_period = 10 SECONDS
 	soundeffect = 'sound/weapons/dropship_sonic_boom.ogg' //BOOM~WOOOOOSH~HSOOOOOW~BOOM
 	step_delay = 3
 	max_offset = 12

code/game/cas_manager/datums/cas_fire_mission.dm

@@ -38,9 +38,9 @@
 	for(var/datum/cas_fire_mission_record/record as anything in records)
 		.["records"] += list(record.ui_data(user))
 
-/datum/cas_fire_mission/proc/build_new_record(obj/structure/dropship_equipment/weapon/weap, fire_length)
+/datum/cas_fire_mission/proc/build_new_record(obj/structure/dropship_equipment/weapon/weapon, fire_length)
 	var/datum/cas_fire_mission_record/record = new()
-	record.weapon = weap
+	record.weapon = weapon
 	record.offsets = new /list(fire_length)
 	for(var/idx = 1; idx<=fire_length; idx++)
 		record.offsets[idx] = "-"
@@ -53,24 +53,24 @@
 		// if weapon appears in weapons list but not in record
 		// > add empty record for new weapon
 		var/found = FALSE
-		for(var/obj/structure/dropship_equipment/weapon/weap in weapons)
-			if(record.weapon == weap)
+		for(var/obj/structure/dropship_equipment/weapon/weapon in weapons)
+			if(record.weapon == weapon)
 				found=TRUE
 				break
 		if(!found)
 			bad_records.Add(record)
-	for(var/obj/structure/dropship_equipment/weapon/weap in weapons)
+	for(var/obj/structure/dropship_equipment/weapon/weapon in weapons)
 		var/found = FALSE
 		for(var/datum/cas_fire_mission_record/record in records)
-			if(record.weapon == weap)
+			if(record.weapon == weapon)
 				found=TRUE
 				break
 		if(!found)
-			missing_weapons.Add(weap)
+			missing_weapons.Add(weapon)
 	for(var/datum/cas_fire_mission_record/record in bad_records)
 		records -= record
-	for(var/obj/structure/dropship_equipment/weapon/weap in missing_weapons)
-		build_new_record(weap, fire_length)
+	for(var/obj/structure/dropship_equipment/weapon/weapon in missing_weapons)
+		build_new_record(weapon, fire_length)
 
 /datum/cas_fire_mission/proc/record_for_weapon(weapon_id)
 	for(var/datum/cas_fire_mission_record/record as anything in records)
@@ -176,35 +176,35 @@
 	msg_admin_niche("[usr ? key_name(usr) : "Someone"] is launching Fire Mission '[name]' at ([initial_turf.x],[initial_turf.y],[initial_turf.z]) [ADMIN_JMP(initial_turf)]")
 
 	var/relative_dir
-	for(var/mob/M in range(15, initial_turf))
-		if(get_turf(M) == initial_turf)
+	for(var/mob/mob in range(15, initial_turf))
+		if(get_turf(mob) == initial_turf)
 			relative_dir = 0
 		else
-			relative_dir = Get_Compass_Dir(M, initial_turf)
+			relative_dir = Get_Compass_Dir(mob, initial_turf)
 
 		var/ds_identifier = "LARGE BIRD"
-		if (M.mob_flags & KNOWS_TECHNOLOGY)
+		if (mob.mob_flags & KNOWS_TECHNOLOGY)
 			ds_identifier = "DROPSHIP"
 
-		M.show_message( \
+		mob.show_message( \
 			SPAN_HIGHDANGER("A [ds_identifier] FLIES [SPAN_UNDERLINE(relative_dir ? uppertext(("TO YOUR " + dir2text(relative_dir))) : uppertext("right above you"))]!"), SHOW_MESSAGE_VISIBLE, \
 			SPAN_HIGHDANGER("YOU HEAR SOMETHING GO [SPAN_UNDERLINE(relative_dir ? uppertext(("TO YOUR " + dir2text(relative_dir))) : uppertext("right above you"))]!"), SHOW_MESSAGE_AUDIBLE \
 		)
 
 	// Xenos have time to react to the first message
-	sleep(0.5 SECONDS)
+	sleep(1.5 SECONDS)
 
-	for(var/mob/M in range(10, initial_turf))
-		if(get_turf(M) == initial_turf)
+	for(var/mob/mob in range(10, initial_turf))
+		if(get_turf(mob) == initial_turf)
 			relative_dir = 0
 		else
-			relative_dir = Get_Compass_Dir(M, initial_turf)
+			relative_dir = Get_Compass_Dir(mob, initial_turf)
 
 		var/ds_identifier = "LARGE BIRD"
-		if (M.mob_flags & KNOWS_TECHNOLOGY)
+		if (mob.mob_flags & KNOWS_TECHNOLOGY)
 			ds_identifier = "DROPSHIP"
 
-		M.show_message( \
+		mob.show_message( \
 			SPAN_HIGHDANGER("A [ds_identifier] FIRES [SPAN_UNDERLINE(relative_dir ? uppertext(("TO YOUR " + dir2text(relative_dir))) : uppertext("right above you"))]!"), 1, \
 			SPAN_HIGHDANGER("YOU HEAR SOMETHING FIRE [SPAN_UNDERLINE(relative_dir ? uppertext(("TO YOUR " + dir2text(relative_dir))) : uppertext("right above you"))]!"), 2 \
 		)
@@ -243,8 +243,8 @@
 			if (current_turf == null)
 				return -1
 			var/turf/shootloc = locate(current_turf.x + sx*offset, current_turf.y + sy*offset, current_turf.z)
-			var/area/A = get_area(shootloc)
-			if(shootloc && !CEILING_IS_PROTECTED(A?.ceiling, CEILING_PROTECTION_TIER_3) && !protected_by_pylon(TURF_PROTECTION_CAS, shootloc))
+			var/area/area = get_area(shootloc)
+			if(shootloc && !CEILING_IS_PROTECTED(area?.ceiling, CEILING_PROTECTION_TIER_3) && !protected_by_pylon(TURF_PROTECTION_CAS, shootloc))
 				item.weapon.open_fire_firemission(shootloc)
 		sleep(step_delay)
 	if(envelope)