Mimites - Mimic based creatures and their midround event (#11170)

* Initial Commit

* ranged vision adjust

* Adds hud icon for observers and variants to see

* Crate mimites no longer vent or replicate, and can be randomised, renamed to mimites

* updates the dmi icon name oops

* New Sprite

* ranged update

* add qdelcheck, increase growth time, add hudset to crate

beestation.dme

@@ -2578,6 +2578,7 @@
 #include "code\modules\events\meateor_wave.dm"
 #include "code\modules\events\meteor_wave.dm"
 #include "code\modules\events\mice_migration.dm"
+#include "code\modules\events\mimite_infestation.dm"
 #include "code\modules\events\nightmare.dm"
 #include "code\modules\events\operative.dm"
 #include "code\modules\events\pirates.dm"
@@ -3222,6 +3223,7 @@
 #include "code\modules\mob\living\simple_animal\hostile\macrophage.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mecha_pilot.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mimic.dm"
+#include "code\modules\mob\living\simple_animal\hostile\mimite.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mushroom.dm"
 #include "code\modules\mob\living\simple_animal\hostile\nanotrasen.dm"
 #include "code\modules\mob\living\simple_animal\hostile\netherworld.dm"

code/__DEFINES/is_helpers.dm

@@ -174,6 +174,8 @@ GLOBAL_LIST_INIT(turfs_without_ground, typecacheof(list(
 
 #define isfaithless(A) (istype(A, /mob/living/simple_animal/hostile/faithless))
 
+#define ismimite(A) (istype(A, /mob/living/simple_animal/hostile/mimite))
+
 //Misc mobs
 #define isobserver(A) (istype(A, /mob/dead/observer))
 

code/game/alternate_appearance.dm

@@ -215,3 +215,12 @@ GLOBAL_LIST_EMPTY(active_alternate_appearances)
 
 /datum/atom_hud/alternate_appearance/basic/heretics/mobShouldSee(mob/M)
 	return IS_HERETIC(M) || IS_HERETIC_MONSTER(M)
+
+/datum/atom_hud/alternate_appearance/basic/mimites/New()
+	..()
+	for(var/mob in  GLOB.player_list)
+		if(mobShouldSee(mob))
+			add_hud_to(mob)
+
+/datum/atom_hud/alternate_appearance/basic/mimites/mobShouldSee(mob/M)
+	return ismimite(M) || isobserver(M)

code/modules/events/mimite_infestation.dm

@@ -0,0 +1,49 @@
+/datum/round_event_control/mimite_infestation
+	name = "Mimite Infestation"
+	typepath = /datum/round_event/mimite_infestation
+	weight = 10
+	min_players = 20
+
+
+/datum/round_event/mimite_infestation
+	announceWhen	= 400
+	// 50% chance of being incremented by one
+	var/spawncount = 2
+	fakeable = TRUE
+
+/datum/round_event/mimite_infestation/setup()
+	announceWhen = rand(announceWhen, announceWhen + 50)
+	if(prob(50))
+		spawncount++
+
+/datum/round_event/mimite_infestation/announce(fake)
+	var/living_mimites = FALSE
+	for(var/mob/living/simple_animal/hostile/mimite/A)
+		if(A.stat != DEAD)
+			living_mimites = TRUE
+
+	if(living_mimites || fake)
+		priority_announce("Unidentified lifesigns detected coming aboard [station_name()]. Secure any exterior access, including ducting and ventilation.", "Lifesign Alert", ANNOUNCER_ALIENS)
+
+/datum/round_event/mimite_infestation/start()
+	var/list/vents = list()
+	for(var/obj/machinery/atmospherics/components/unary/vent_pump/temp_vent in GLOB.machines)
+		if(QDELETED(temp_vent))
+			continue
+		if(is_station_level(temp_vent.loc.z) && !temp_vent.welded)
+			var/datum/pipeline/temp_vent_parent = temp_vent.parents[1]
+			if(!temp_vent_parent)
+				continue//no parent vent
+			//Stops mimites getting stuck in small networks.
+			if(temp_vent_parent.other_atmosmch.len > 20)
+				vents += temp_vent
+	if(!vents.len)
+		message_admins("An event attempted to spawn mimites but no suitable vents were found. Shutting down.")
+		return MAP_ERROR
+	while(spawncount > 0 && vents.len)
+		var/obj/vent = pick_n_take(vents)
+		var/mob/living/simple_animal/hostile/mimite/new_mimite = new(vent.loc)
+		spawncount--
+		message_admins("[ADMIN_LOOKUPFLW(new_mimite)] has been spawned by an event.")
+		log_game("mimites where spawned by an event.")
+	return SUCCESSFUL_SPAWN