[MIRROR] ice demon basic mobs [MDB IGNORE] (#24188)

* ice demon basic mobs

* Modular updates

* Modular updates

---------

Co-authored-by: Ben10Omintrix <138636438+Ben10Omintrix@users.noreply.github.com>
Co-authored-by: Giz <13398309+vinylspiders@users.noreply.github.com>

code/__DEFINES/ai/monsters.dm

@@ -147,6 +147,22 @@
 /// key holds the tray we will beam
 #define BB_BEAMABLE_HYDROPLANT_TARGET "beamable_hydroplant_target"
 
+//ice demons
+///the list of items we are afraid of
+#define BB_LIST_SCARY_ITEMS "list_scary_items"
+///our teleportation ability
+#define BB_DEMON_TELEPORT_ABILITY "demon_teleport_ability"
+///the destination of our teleport ability
+#define BB_TELEPORT_DESTINATION "teleport_destination"
+///the ability to clone ourself
+#define BB_DEMON_CLONE_ABILITY "demon_clone_ability"
+///our slippery ice ability
+#define BB_DEMON_SLIP_ABILITY "demon_slip_ability"
+///the turf we are escaping too
+#define BB_ESCAPE_DESTINATION "escape_destination"
+///how far away we will be from our target before teleporting
+#define BB_MINIMUM_DISTANCE_RANGE "minimum_distance_range"
+
 /// Corpse we have consumed
 #define BB_LEGION_CORPSE "legion_corpse"
 /// Things our target recently said

code/datums/ai/basic_mobs/basic_subtrees/maintain_distance.dm

@@ -8,6 +8,8 @@
 	var/maximum_distance = 6
 	/// How far do we look for our target?
 	var/view_distance = 10
+	/// the run away behavior we will use
+	var/run_away_behavior = /datum/ai_behavior/step_away
 
 /datum/ai_planning_subtree/maintain_distance/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
 	. = ..()
@@ -16,12 +18,15 @@
 		return // Don't run away from cucumbers, they're not snakes
 	var/range = get_dist(controller.pawn, target)
 	if (range < minimum_distance)
-		controller.queue_behavior(/datum/ai_behavior/step_away, target_key)
+		controller.queue_behavior(run_away_behavior, target_key, minimum_distance)
 		return
 	if (range > maximum_distance)
 		controller.queue_behavior(/datum/ai_behavior/pursue_to_range, target_key, maximum_distance)
 		return
 
+/datum/ai_planning_subtree/maintain_distance/cover_minimum_distance
+	run_away_behavior = /datum/ai_behavior/cover_minimum_distance
+
 /// Take one step away
 /datum/ai_behavior/step_away
 	behavior_flags = AI_BEHAVIOR_REQUIRE_MOVEMENT | AI_BEHAVIOR_CAN_PLAN_DURING_EXECUTION
@@ -80,3 +85,32 @@
 	if (!QDELETED(current_target) && get_dist(controller.pawn, current_target) > range)
 		return
 	finish_action(controller, succeeded = TRUE)
+
+///instead of taking a single step, we cover the entire distance
+/datum/ai_behavior/cover_minimum_distance
+	behavior_flags = AI_BEHAVIOR_REQUIRE_MOVEMENT | AI_BEHAVIOR_CAN_PLAN_DURING_EXECUTION
+	required_distance = 0
+	action_cooldown = 0.2 SECONDS
+
+/datum/ai_behavior/cover_minimum_distance/setup(datum/ai_controller/controller, target_key, minimum_distance)
+	. = ..()
+	var/atom/target = controller.blackboard[target_key]
+	if(QDELETED(target))
+		return FALSE
+	var/required_distance = minimum_distance - get_dist(controller.pawn, target) //the distance we need to move
+	var/distance = 0
+	var/turf/chosen_turf
+	for(var/turf/open/potential_turf in oview(required_distance, controller.pawn))
+		var/new_distance_from_target = get_dist(potential_turf, target)
+		if(potential_turf.is_blocked_turf())
+			continue
+		if(new_distance_from_target > distance)
+			chosen_turf = potential_turf
+			distance = new_distance_from_target
+	if(isnull(chosen_turf))
+		return FALSE
+	set_movement_target(controller, target = chosen_turf)
+
+/datum/ai_behavior/cover_minimum_distance/perform(seconds_per_tick, datum/ai_controller/controller, target_key)
+	. = ..()
+	finish_action(controller, succeeded = TRUE)

code/datums/ai/basic_mobs/basic_subtrees/ranged_skirmish.dm

@@ -4,28 +4,28 @@
 	/// Blackboard key holding target atom
 	var/target_key = BB_BASIC_MOB_CURRENT_TARGET
 	/// What AI behaviour do we actually run?
-	var/datum/ai_behavior/ranged_skirmish/attack_behavior = /datum/ai_behavior/ranged_skirmish
-
-/datum/ai_planning_subtree/ranged_skirmish/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
-	. = ..()
-	if(!controller.blackboard_key_exists(target_key))
-		return
-	controller.queue_behavior(attack_behavior, target_key, BB_TARGETTING_DATUM, BB_BASIC_MOB_CURRENT_TARGET_HIDING_LOCATION)
-
-/// How often will we try to perform our ranged attack?
-/datum/ai_behavior/ranged_skirmish
-	action_cooldown = 1 SECONDS
+	var/attack_behavior = /datum/ai_behavior/ranged_skirmish
 	/// If target is further away than this we don't fire
 	var/max_range = 9
 	/// If target is closer than this we don't fire
 	var/min_range = 2
 
-/datum/ai_behavior/ranged_skirmish/setup(datum/ai_controller/controller, target_key, targetting_datum_key, hiding_location_key)
+/datum/ai_planning_subtree/ranged_skirmish/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+	. = ..()
+	if(!controller.blackboard_key_exists(target_key))
+		return
+	controller.queue_behavior(attack_behavior, target_key, BB_TARGETTING_DATUM, BB_BASIC_MOB_CURRENT_TARGET_HIDING_LOCATION, max_range, min_range)
+
+/// How often will we try to perform our ranged attack?
+/datum/ai_behavior/ranged_skirmish
+	action_cooldown = 1 SECONDS
+
+/datum/ai_behavior/ranged_skirmish/setup(datum/ai_controller/controller, target_key, targetting_datum_key, hiding_location_key, max_range, min_range)
 	. = ..()
 	var/atom/target = controller.blackboard[hiding_location_key] || controller.blackboard[target_key]
 	return !QDELETED(target)
 
-/datum/ai_behavior/ranged_skirmish/perform(seconds_per_tick, datum/ai_controller/controller, target_key, targetting_datum_key, hiding_location_key)
+/datum/ai_behavior/ranged_skirmish/perform(seconds_per_tick, datum/ai_controller/controller, target_key, targetting_datum_key, hiding_location_key, max_range, min_range)
 	. = ..()
 	var/atom/target = controller.blackboard[target_key]
 	if (QDELETED(target))

code/datums/ai/basic_mobs/basic_subtrees/teleport_away_from_target.dm

@@ -0,0 +1,56 @@
+///behavior to activate ability to escape from target
+/datum/ai_planning_subtree/teleport_away_from_target
+	///minimum distance away from the target before we execute behavior
+	var/minimum_distance = 2
+	///the ability we will execute
+	var/ability_key
+
+/datum/ai_planning_subtree/teleport_away_from_target/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+	if(!controller.blackboard_key_exists(BB_BASIC_MOB_CURRENT_TARGET))
+		return
+	var/atom/target = controller.blackboard[BB_BASIC_MOB_CURRENT_TARGET]
+	var/distance_from_target = get_dist(target, controller.pawn)
+	if(distance_from_target >= minimum_distance)
+		controller.clear_blackboard_key(BB_ESCAPE_DESTINATION)
+		return
+	var/datum/action/cooldown/ability = controller.blackboard[ability_key]
+	if(!ability?.IsAvailable())
+		return
+	var/turf/location_turf = controller.blackboard[BB_ESCAPE_DESTINATION]
+
+	if(isnull(location_turf))
+		controller.queue_behavior(/datum/ai_behavior/find_furthest_turf_from_target, BB_BASIC_MOB_CURRENT_TARGET, BB_ESCAPE_DESTINATION, minimum_distance)
+		return SUBTREE_RETURN_FINISH_PLANNING
+
+	if(get_dist(location_turf, target) < minimum_distance || !can_see(controller.pawn, location_turf)) //target moved close too close or we moved too far since finding the target turf
+		controller.clear_blackboard_key(BB_ESCAPE_DESTINATION)
+		return
+
+	controller.queue_behavior(/datum/ai_behavior/targeted_mob_ability/and_clear_target, ability_key, BB_ESCAPE_DESTINATION)
+
+///find furtherst turf target so we may teleport to it
+/datum/ai_behavior/find_furthest_turf_from_target
+
+/datum/ai_behavior/find_furthest_turf_from_target/perform(seconds_per_tick, datum/ai_controller/controller, target_key, set_key, range)
+	var/mob/living/living_target = controller.blackboard[target_key]
+	if(QDELETED(living_target))
+		return
+
+	var/distance = 0
+	var/turf/chosen_turf
+	for(var/turf/open/potential_destination in oview(range, living_target))
+		if(potential_destination.is_blocked_turf())
+			continue
+		var/new_distance_to_target = get_dist(potential_destination, living_target)
+		if(new_distance_to_target > distance)
+			chosen_turf = potential_destination
+			distance = new_distance_to_target
+		if(distance == range)
+			break //we have already found the max distance
+
+	if(isnull(chosen_turf))
+		finish_action(controller, FALSE)
+		return
+
+	controller.set_blackboard_key(set_key, chosen_turf)
+	finish_action(controller, TRUE)

code/datums/ai/hunting_behavior/hunting_behaviors.dm

@@ -94,8 +94,6 @@
 	var/atom/hunted = controller.blackboard[hunting_target_key]
 
 	if(QDELETED(hunted))
-		//Target is gone for some reason. forget about this task!
-		controller[hunting_target_key] = null
 		finish_action(controller, FALSE, hunting_target_key)
 	else
 		target_caught(hunter, hunted)
@@ -136,7 +134,7 @@
 
 /datum/ai_behavior/hunt_target/use_ability_on_target/perform(seconds_per_tick, datum/ai_controller/controller, hunting_target_key, hunting_cooldown_key)
 	var/datum/action/cooldown/ability = controller.blackboard[ability_key]
-	if(QDELETED(ability) || !ability.IsAvailable())
+	if(!ability?.IsAvailable())
 		finish_action(controller, FALSE, hunting_target_key)
 	return ..()
 

code/datums/components/joint_damage.dm

@@ -0,0 +1,35 @@
+/*
+ * A component given to mobs to damage a linked mob
+ */
+/datum/component/joint_damage
+	///the mob we will damage
+	var/datum/weakref/overlord_mob
+	///our last health count
+	var/previous_health_count
+
+/datum/component/joint_damage/Initialize(mob/overlord_mob)
+	if(!isliving(parent))
+		return COMPONENT_INCOMPATIBLE
+	var/mob/living/parent_mob = parent
+	previous_health_count = parent_mob.health
+	if(overlord_mob)
+		src.overlord_mob = WEAKREF(overlord_mob)
+
+/datum/component/joint_damage/RegisterWithParent()
+	RegisterSignal(parent, COMSIG_LIVING_HEALTH_UPDATE, PROC_REF(damage_overlord))
+	RegisterSignal(parent, COMSIG_LIVING_DEATH, PROC_REF(damage_overlord))
+
+/datum/component/joint_damage/UnregisterFromParent()
+	UnregisterSignal(parent, list(COMSIG_LIVING_HEALTH_UPDATE, COMSIG_LIVING_DEATH))
+
+/datum/component/joint_damage/Destroy()
+	overlord_mob = null
+	return ..()
+
+/datum/component/joint_damage/proc/damage_overlord(mob/living/source)
+	SIGNAL_HANDLER
+
+	var/mob/living/overlord_to_damage = overlord_mob?.resolve()
+	if(!isnull(overlord_to_damage))
+		overlord_to_damage.adjustBruteLoss(previous_health_count - source.health) ///damage or heal overlord
+	previous_health_count = source.health

code/datums/mapgen/Cavegens/IcemoonCaves.dm

@@ -62,12 +62,12 @@
 	weighted_closed_turf_types = list(/turf/closed/mineral/random/snow/underground = 1)
 	weighted_mob_spawn_list = list(
 		SPAWN_MEGAFAUNA = 1,
+		/mob/living/basic/mining/ice_demon = 100,
 		/mob/living/basic/mining/ice_whelp = 60,
 		/mob/living/basic/mining/legion/snow = 100,
-		/mob/living/simple_animal/hostile/asteroid/ice_demon = 100,
 		/obj/structure/spawner/ice_moon/demonic_portal = 6,
-		/obj/structure/spawner/ice_moon/demonic_portal/snowlegion = 6,
 		/obj/structure/spawner/ice_moon/demonic_portal/ice_whelp = 6,
+		/obj/structure/spawner/ice_moon/demonic_portal/snowlegion = 6,
 	)
 	weighted_megafauna_spawn_list = list(/mob/living/simple_animal/hostile/megafauna/colossus = 1)
 	weighted_flora_spawn_list = list(

code/game/objects/structures/icemoon/cave_entrance.dm

@@ -80,7 +80,7 @@ GLOBAL_LIST_INIT(ore_probability, list(
 	name = "demonic portal"
 	desc = "A portal that goes to another world, normal creatures couldn't survive there."
 	icon_state = "nether"
-	mob_types = list(/mob/living/simple_animal/hostile/asteroid/ice_demon)
+	mob_types = list(/mob/living/basic/mining/ice_demon)
 	light_range = 1
 	light_color = COLOR_SOFT_RED
 	mob_gps_id = "WT|B" // watcher | bluespace

code/modules/mining/equipment/kinetic_crusher.dm

@@ -437,3 +437,36 @@
 		chaser.monster_damage_boost = FALSE // Weaker cuz no cooldown
 		chaser.damage = 20
 		log_combat(user, target, "fired a chaser at", src)
+
+/obj/item/crusher_trophy/ice_demon_cube
+	name = "demonic cube"
+	desc = "A stone cold cube dropped from an ice demon."
+	icon_state = "ice_demon_cube"
+	denied_type = /obj/item/crusher_trophy/ice_demon_cube
+	///how many will we summon?
+	var/summon_amount = 2
+	///cooldown to summon demons upon the target
+	COOLDOWN_DECLARE(summon_cooldown)
+
+/obj/item/crusher_trophy/ice_demon_cube/effect_desc()
+	return "mark detonation to unleash demonic ice clones upon the target"
+
+/obj/item/crusher_trophy/ice_demon_cube/on_mark_detonation(mob/living/target, mob/living/user)
+	if(isnull(target) || !COOLDOWN_FINISHED(src, summon_cooldown))
+		return
+	for(var/i in 1 to summon_amount)
+		var/turf/drop_off = find_dropoff_turf(target, user)
+		var/mob/living/basic/mining/demon_afterimage/crusher/friend = new(drop_off)
+		friend.faction = list(FACTION_NEUTRAL)
+		friend.befriend(user)
+		friend.ai_controller?.set_blackboard_key(BB_BASIC_MOB_CURRENT_TARGET, target)
+	COOLDOWN_START(src, summon_cooldown, 30 SECONDS)
+
+///try to make them spawn all around the target to surround him
+/obj/item/crusher_trophy/ice_demon_cube/proc/find_dropoff_turf(mob/living/target, mob/living/user)
+	var/list/turfs_list = get_adjacent_open_turfs(target)
+	for(var/turf/possible_turf in turfs_list)
+		if(possible_turf.is_blocked_turf())
+			continue
+		return possible_turf
+	return get_turf(user)

code/modules/mob/living/basic/icemoon/ice_demon/ice_demon.dm

@@ -0,0 +1,89 @@
+/mob/living/basic/mining/ice_demon
+	name = "demonic watcher"
+	desc = "A creature formed entirely out of ice, bluespace energy emanates from inside of it."
+	icon = 'icons/mob/simple/icemoon/icemoon_monsters.dmi'
+	icon_state = "ice_demon"
+	icon_living = "ice_demon"
+	icon_gib = "syndicate_gib"
+	mob_biotypes = MOB_ORGANIC|MOB_BEAST
+	mouse_opacity = MOUSE_OPACITY_ICON
+	basic_mob_flags = DEL_ON_DEATH
+	speed = 2
+	maxHealth = 150
+	health = 150
+	obj_damage = 40
+	melee_damage_lower = 15
+	melee_damage_upper = 15
+	attack_verb_continuous = "slices"
+	attack_verb_simple = "slice"
+	attack_sound = 'sound/weapons/bladeslice.ogg'
+	attack_vis_effect = ATTACK_EFFECT_SLASH
+	move_force = MOVE_FORCE_VERY_STRONG
+	move_resist = MOVE_FORCE_VERY_STRONG
+	pull_force = MOVE_FORCE_VERY_STRONG
+	crusher_loot = /obj/item/crusher_trophy/ice_demon_cube
+	ai_controller = /datum/ai_controller/basic_controller/ice_demon
+	death_message = "fades as the energies that tied it to this world dissipate."
+	death_sound = 'sound/magic/demon_dies.ogg'
+
+/mob/living/basic/mining/ice_demon/Initialize(mapload)
+	. = ..()
+	var/datum/action/cooldown/mob_cooldown/slippery_ice_floors/ice_floor = new(src)
+	ice_floor.Grant(src)
+	ai_controller.set_blackboard_key(BB_DEMON_SLIP_ABILITY, ice_floor)
+	var/datum/action/cooldown/mob_cooldown/ice_demon_teleport/demon_teleport = new(src)
+	demon_teleport.Grant(src)
+	ai_controller.set_blackboard_key(BB_DEMON_TELEPORT_ABILITY, demon_teleport)
+	var/datum/action/cooldown/spell/conjure/create_afterimages/afterimage = new(src)
+	afterimage.Grant(src)
+	ai_controller.set_blackboard_key(BB_DEMON_CLONE_ABILITY, afterimage)
+	AddComponent(\
+		/datum/component/ranged_attacks,\
+		projectile_type = /obj/projectile/temp/ice_demon,\
+		projectile_sound = 'sound/weapons/pierce.ogg',\
+	)
+	var/static/list/death_loot = list(/obj/item/stack/ore/bluespace_crystal = 3)
+	AddElement(/datum/element/death_drops, death_loot)
+	AddElement(/datum/element/simple_flying)
+
+/mob/living/basic/mining/ice_demon/death(gibbed)
+	if(prob(5))
+		new /obj/item/raw_anomaly_core/bluespace(loc)
+	return ..()
+
+/mob/living/basic/mining/demon_afterimage
+	name = "afterimage demonic watcher"
+	desc = "Is this some sort of illusion?"
+	icon = 'icons/mob/simple/icemoon/icemoon_monsters.dmi'
+	icon_state = "ice_demon"
+	icon_living = "ice_demon"
+	icon_gib = "syndicate_gib"
+	mob_biotypes = MOB_ORGANIC|MOB_BEAST
+	mouse_opacity = MOUSE_OPACITY_ICON
+	basic_mob_flags = DEL_ON_DEATH
+	speed = 5
+	maxHealth = 20
+	health = 20
+	melee_damage_lower = 5
+	melee_damage_upper = 5
+	attack_verb_continuous = "slices"
+	attack_verb_simple = "slice"
+	attack_sound = 'sound/weapons/bladeslice.ogg'
+	alpha = 80
+	ai_controller = /datum/ai_controller/basic_controller/ice_demon/afterimage
+	///how long do we exist for
+	var/existence_period = 15 SECONDS
+
+/mob/living/basic/mining/demon_afterimage/Initialize(mapload)
+	. = ..()
+	AddElement(/datum/element/simple_flying)
+	AddElement(/datum/element/temporary_atom, life_time = existence_period)
+
+///afterimage subtypes summoned by the crusher
+/mob/living/basic/mining/demon_afterimage/crusher
+	speed = 2
+	health = 60
+	maxHealth = 60
+	melee_damage_lower = 10
+	melee_damage_upper = 10
+	existence_period = 7 SECONDS

code/modules/mob/living/basic/icemoon/ice_demon/ice_demon_abilities.dm

@@ -0,0 +1,117 @@
+/obj/projectile/temp/ice_demon
+	name = "ice blast"
+	icon_state = "ice_2"
+	damage = 5
+	damage_type = BURN
+	armor_flag = ENERGY
+	speed = 1
+	pixel_speed_multiplier = 0.25
+	temperature = -75
+
+/datum/action/cooldown/mob_cooldown/ice_demon_teleport
+	name = "Bluespace Teleport"
+	desc = "Teleport towards a destination target!"
+	button_icon = 'icons/obj/ore.dmi'
+	button_icon_state = "bluespace_crystal"
+	cooldown_time = 3 SECONDS
+	melee_cooldown_time = 0 SECONDS
+	///time delay before teleport
+	var/time_delay = 0.5 SECONDS
+
+/datum/action/cooldown/mob_cooldown/ice_demon_teleport/Activate(atom/target_atom)
+	if(isclosedturf(get_turf(target_atom)))
+		owner.balloon_alert(owner, "blocked!")
+		return FALSE
+	animate(owner, transform = matrix().Scale(0.8), time = time_delay, easing = SINE_EASING)
+	addtimer(CALLBACK(src, PROC_REF(teleport_to_turf), target_atom), time_delay)
+	StartCooldown()
+	return TRUE
+
+/datum/action/cooldown/mob_cooldown/ice_demon_teleport/proc/teleport_to_turf(atom/target)
+	animate(owner, transform = matrix(), time = 0.5 SECONDS, easing = SINE_EASING)
+	do_teleport(teleatom = owner, destination = target, channel = TELEPORT_CHANNEL_BLUESPACE, forced = TRUE)
+
+/datum/action/cooldown/mob_cooldown/slippery_ice_floors
+	name = "Iced Floors"
+	desc = "Summon slippery ice floors all around!"
+	button_icon = 'icons/turf/floors/ice_turf.dmi'
+	button_icon_state = "ice_turf-6"
+	cooldown_time = 2 SECONDS
+	click_to_activate = FALSE
+	melee_cooldown_time = 0 SECONDS
+	///perimeter we will spawn the iced floors on
+	var/radius = 1
+	///intervals we will spawn the ice floors in
+	var/spread_duration = 0.2 SECONDS
+
+/datum/action/cooldown/mob_cooldown/slippery_ice_floors/Activate(atom/target_atom)
+	for(var/i in 0 to radius)
+		var/list/list_of_turfs = border_diamond_range_turfs(owner, i)
+		addtimer(CALLBACK(src, PROC_REF(spawn_icy_floors), list_of_turfs), i * spread_duration)
+	StartCooldown()
+	return TRUE
+
+/datum/action/cooldown/mob_cooldown/slippery_ice_floors/proc/spawn_icy_floors(list/list_of_turfs)
+	if(!length(list_of_turfs))
+		return
+	for(var/turf/location in list_of_turfs)
+		if(isnull(location))
+			continue
+		if(isclosedturf(location) || isspaceturf(location))
+			continue
+		new /obj/effect/temp_visual/slippery_ice(location)
+
+/obj/effect/temp_visual/slippery_ice
+	name = "slippery acid"
+	icon = 'icons/turf/floors/ice_turf.dmi'
+	icon_state = "ice_turf-6"
+	layer = BELOW_MOB_LAYER
+	plane = GAME_PLANE
+	anchored = TRUE
+	duration = 3 SECONDS
+	alpha = 100
+	/// how long does it take for the effect to phase in
+	var/phase_in_period = 2 SECONDS
+
+/obj/effect/temp_visual/slippery_ice/Initialize(mapload)
+	. = ..()
+	animate(src, alpha = 160, time = phase_in_period)
+	animate(alpha = 0, time = duration - phase_in_period) /// slowly fade out of existence
+	addtimer(CALLBACK(src, PROC_REF(add_slippery_component), phase_in_period)) //only become slippery after we phased in
+
+/obj/effect/temp_visual/slippery_ice/proc/add_slippery_component()
+	AddComponent(/datum/component/slippery, 2 SECONDS)
+
+/datum/action/cooldown/spell/conjure/create_afterimages
+	name = "Create After Images"
+	button_icon = 'icons/mob/simple/icemoon/icemoon_monsters.dmi'
+	button_icon_state = "ice_demon"
+	spell_requirements = NONE
+	cooldown_time = 1 MINUTES
+	summon_type = list(/mob/living/basic/mining/demon_afterimage)
+	summon_radius = 1
+	summon_amount = 2
+	///max number of after images
+	var/max_afterimages = 2
+	///How many clones do we have summoned
+	var/number_of_afterimages = 0
+
+/datum/action/cooldown/spell/conjure/create_afterimages/can_cast_spell(feedback = TRUE)
+	. = ..()
+	if(!.)
+		return FALSE
+	if(number_of_afterimages >= max_afterimages)
+		return FALSE
+	return TRUE
+
+/datum/action/cooldown/spell/conjure/create_afterimages/post_summon(atom/summoned_object, atom/cast_on)
+	var/mob/living/basic/created_copy = summoned_object
+	created_copy.AddComponent(/datum/component/joint_damage, overlord_mob = owner)
+	RegisterSignals(created_copy, list(COMSIG_QDELETING, COMSIG_LIVING_DEATH), PROC_REF(delete_copy))
+	number_of_afterimages++
+
+/datum/action/cooldown/spell/conjure/create_afterimages/proc/delete_copy(mob/source)
+	SIGNAL_HANDLER
+
+	UnregisterSignal(source, list(COMSIG_QDELETING, COMSIG_LIVING_DEATH))
+	number_of_afterimages--

code/modules/mob/living/basic/icemoon/ice_demon/ice_demon_ai.dm

@@ -0,0 +1,118 @@
+/datum/ai_controller/basic_controller/ice_demon
+	blackboard = list(
+		BB_TARGETTING_DATUM = new /datum/targetting_datum/basic,
+		BB_LIST_SCARY_ITEMS = list(
+			/obj/item/weldingtool,
+			/obj/item/flashlight/flare,
+		),
+		BB_BASIC_MOB_FLEEING = TRUE,
+		BB_MINIMUM_DISTANCE_RANGE = 3,
+	)
+
+	ai_movement = /datum/ai_movement/basic_avoidance
+	idle_behavior = /datum/idle_behavior/idle_random_walk
+	planning_subtrees = list(
+		/datum/ai_planning_subtree/simple_find_target,
+		/datum/ai_planning_subtree/flee_target/ice_demon,
+		/datum/ai_planning_subtree/ranged_skirmish/ice_demon,
+		/datum/ai_planning_subtree/maintain_distance/cover_minimum_distance/ice_demon,
+		/datum/ai_planning_subtree/teleport_away_from_target,
+		/datum/ai_planning_subtree/find_and_hunt_target/teleport_destination,
+		/datum/ai_planning_subtree/targeted_mob_ability/summon_afterimages,
+	)
+
+
+/datum/ai_planning_subtree/maintain_distance/cover_minimum_distance/ice_demon
+	maximum_distance = 7
+
+/datum/ai_planning_subtree/teleport_away_from_target
+	ability_key = BB_DEMON_TELEPORT_ABILITY
+
+/datum/ai_planning_subtree/find_and_hunt_target/teleport_destination
+	target_key = BB_TELEPORT_DESTINATION
+	hunting_behavior = /datum/ai_behavior/hunt_target/use_ability_on_target/demon_teleport
+	finding_behavior = /datum/ai_behavior/find_valid_teleport_location
+	hunt_targets = list(/turf/open)
+	hunt_range = 3
+	finish_planning = FALSE
+
+/datum/ai_planning_subtree/find_and_hunt_target/teleport_destination/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+	if(!controller.blackboard_key_exists(BB_BASIC_MOB_CURRENT_TARGET))
+		return
+	if(controller.blackboard_key_exists(BB_ESCAPE_DESTINATION))
+		controller.clear_blackboard_key(BB_TELEPORT_DESTINATION)
+		return
+	var/datum/action/cooldown/ability = controller.blackboard[BB_DEMON_TELEPORT_ABILITY]
+	if(!ability?.IsAvailable())
+		return
+	return ..()
+
+/datum/ai_behavior/find_valid_teleport_location
+
+/datum/ai_behavior/find_valid_teleport_location/perform(seconds_per_tick, datum/ai_controller/controller, hunting_target_key, types_to_hunt, hunt_range)
+	. = ..()
+	var/mob/living/target = controller.blackboard[BB_BASIC_MOB_CURRENT_TARGET]
+	var/list/possible_turfs = list()
+
+	if(QDELETED(target))
+		finish_action(controller, FALSE)
+		return
+
+	for(var/turf/open/potential_turf in oview(hunt_range, target)) //we check for turfs around the target
+		if(potential_turf.is_blocked_turf())
+			continue
+		if(!can_see(target, potential_turf, hunt_range))
+			continue
+		possible_turfs += potential_turf
+
+	if(!length(possible_turfs))
+		finish_action(controller, FALSE)
+		return
+
+	controller.set_blackboard_key(hunting_target_key, pick(possible_turfs))
+	finish_action(controller, TRUE)
+
+/datum/ai_behavior/hunt_target/use_ability_on_target/demon_teleport
+	hunt_cooldown = 2 SECONDS
+	ability_key = BB_DEMON_TELEPORT_ABILITY
+	behavior_flags = NONE
+
+/datum/ai_planning_subtree/targeted_mob_ability/summon_afterimages
+	ability_key = BB_DEMON_CLONE_ABILITY
+
+/datum/ai_planning_subtree/targeted_mob_ability/summon_afterimages/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+	var/mob/living/living_pawn = controller.pawn
+	if(living_pawn.health / living_pawn.maxHealth > 0.5) //only use this ability when under half health
+		return
+	return ..()
+
+/datum/ai_planning_subtree/flee_target/ice_demon
+
+/datum/ai_planning_subtree/flee_target/ice_demon/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
+	var/atom/target = controller.blackboard[BB_BASIC_MOB_CURRENT_TARGET]
+	if(QDELETED(target))
+		return
+	if(!iscarbon(target))
+		return
+	var/mob/living/carbon/human_target = target
+
+	for(var/obj/held_item in human_target.held_items)
+		if(!is_type_in_list(held_item, controller.blackboard[BB_LIST_SCARY_ITEMS]))
+			continue
+		if(!held_item.light_on)
+			continue
+		var/datum/action/cooldown/slip_ability = controller.blackboard[BB_DEMON_SLIP_ABILITY]
+		if(slip_ability?.IsAvailable())
+			controller.queue_behavior(/datum/ai_behavior/use_mob_ability, BB_DEMON_SLIP_ABILITY)
+		return ..()
+
+/datum/ai_planning_subtree/ranged_skirmish/ice_demon
+	min_range = 0
+
+/datum/ai_controller/basic_controller/ice_demon/afterimage
+	planning_subtrees = list(
+		/datum/ai_planning_subtree/simple_find_target,
+		/datum/ai_planning_subtree/flee_target/ice_demon, //even the afterimages are afraid of flames!
+		/datum/ai_planning_subtree/basic_melee_attack_subtree,
+	)
+

code/modules/mob/living/basic/lavaland/watcher/watcher_ai.dm

@@ -27,13 +27,10 @@
 	return ..()
 
 /datum/ai_planning_subtree/ranged_skirmish/watcher
-	attack_behavior = /datum/ai_behavior/ranged_skirmish/watcher
+	min_range = 0
 
 /datum/ai_planning_subtree/ranged_skirmish/watcher/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
 	var/mob/living/target = controller.blackboard[BB_BASIC_MOB_CURRENT_TARGET]
 	if (QDELETED(target) || HAS_TRAIT(target, TRAIT_OVERWATCHED))
 		return // Don't bully people who are playing red light green light
 	return ..()
-
-/datum/ai_behavior/ranged_skirmish/watcher
-	min_range = 0

code/modules/mob/living/simple_animal/hostile/mining_mobs/ice_demon.dm

@@ -1,85 +0,0 @@
-/mob/living/simple_animal/hostile/asteroid/ice_demon
-	name = "demonic watcher"
-	desc = "A creature formed entirely out of ice, bluespace energy emanates from inside of it."
-	icon = 'icons/mob/simple/icemoon/icemoon_monsters.dmi'
-	icon_state = "ice_demon"
-	icon_living = "ice_demon"
-	icon_dead = "ice_demon_dead"
-	icon_gib = "syndicate_gib"
-	mob_biotypes = MOB_ORGANIC|MOB_BEAST
-	mouse_opacity = MOUSE_OPACITY_ICON
-	speak_emote = list("telepathically cries")
-	speed = 2
-	move_to_delay = 2
-	projectiletype = /obj/projectile/temp/ice_demon
-	projectilesound = 'sound/weapons/pierce.ogg'
-	ranged = TRUE
-	ranged_message = "manifests ice"
-	ranged_cooldown_time = 1.5 SECONDS
-	minimum_distance = 3
-	retreat_distance = 3
-	maxHealth = 150
-	health = 150
-	obj_damage = 40
-	melee_damage_lower = 15
-	melee_damage_upper = 15
-	attack_verb_continuous = "slices"
-	attack_verb_simple = "slice"
-	attack_sound = 'sound/weapons/bladeslice.ogg'
-	attack_vis_effect = ATTACK_EFFECT_SLASH
-	vision_range = 9
-	aggro_vision_range = 9
-	move_force = MOVE_FORCE_VERY_STRONG
-	move_resist = MOVE_FORCE_VERY_STRONG
-	pull_force = MOVE_FORCE_VERY_STRONG
-	del_on_death = TRUE
-	loot = list()
-	crusher_loot = /obj/item/crusher_trophy/demon_core /// SKYRAT EDIT CHANGE - ORIGINAL : crusher_loot = /obj/item/crusher_trophy/watcher_wing/ice_wing
-	death_message = "fades as the energies that tied it to this world dissipate."
-	death_sound = 'sound/magic/demon_dies.ogg'
-	stat_attack = HARD_CRIT
-	robust_searching = TRUE
-	footstep_type = FOOTSTEP_MOB_CLAW
-	/// Distance the demon will teleport from the target
-	var/teleport_distance = 3
-
-/mob/living/simple_animal/hostile/asteroid/ice_demon/Initialize(mapload)
-	. = ..()
-	AddElement(/datum/element/simple_flying)
-
-/obj/projectile/temp/ice_demon
-	name = "ice blast"
-	icon_state = "ice_2"
-	damage = 5
-	damage_type = BURN
-	armor_flag = ENERGY
-	speed = 1
-	pixel_speed_multiplier = 0.25
-	range = 200
-	temperature = -75
-
-/mob/living/simple_animal/hostile/asteroid/ice_demon/OpenFire()
-	ranged_cooldown = world.time + ranged_cooldown_time
-	// Sentient ice demons teleporting has been linked to server crashes
-	if(client)
-		return ..()
-	if(teleport_distance <= 0)
-		return ..()
-	var/list/possible_ends = view(teleport_distance, target.loc) - view(teleport_distance - 1, target.loc)
-	for(var/turf/closed/turf_to_remove in possible_ends)
-		possible_ends -= turf_to_remove
-	if(!possible_ends.len)
-		return ..()
-	var/turf/end = pick(possible_ends)
-	do_teleport(src, end, 0,  channel=TELEPORT_CHANNEL_BLUESPACE, forced = TRUE)
-	SLEEP_CHECK_DEATH(8, src)
-	return ..()
-
-/mob/living/simple_animal/hostile/asteroid/ice_demon/death(gibbed)
-	move_force = MOVE_FORCE_DEFAULT
-	move_resist = MOVE_RESIST_DEFAULT
-	pull_force = PULL_FORCE_DEFAULT
-	new /obj/item/stack/ore/bluespace_crystal(loc, 3)
-	if(prob(5))
-		new /obj/item/raw_anomaly_core/bluespace(loc)
-	return ..()

code/modules/unit_tests/simple_animal_freeze.dm

@@ -64,7 +64,6 @@
 		/mob/living/simple_animal/hostile/asteroid/gutlunch/grublunch,
 		/mob/living/simple_animal/hostile/asteroid/gutlunch/gubbuck,
 		/mob/living/simple_animal/hostile/asteroid/gutlunch/guthen,
-		/mob/living/simple_animal/hostile/asteroid/ice_demon,
 		/mob/living/simple_animal/hostile/asteroid/polarbear,
 		/mob/living/simple_animal/hostile/asteroid/polarbear/lesser,
 		/mob/living/simple_animal/hostile/asteroid/wolf,

modular_skyrat/master_files/code/modules/mob/living/basic/icemoon/ice_demon.dm

@@ -0,0 +1,3 @@
+// crusher loot /obj/item/crusher_trophy/ice_demon_cube -> /obj/item/crusher_trophy/demon_core
+/mob/living/basic/mining/ice_demon
+	crusher_loot = /obj/item/crusher_trophy/demon_core

modular_skyrat/modules/ashwalkers/code/effects/ash_rituals.dm

@@ -198,7 +198,7 @@
 /datum/ash_ritual/summon_icemoon_creature/ritual_success(obj/effect/ash_rune/success_rune)
 	. = ..()
 	var/mob_type = pick(
-		/mob/living/simple_animal/hostile/asteroid/ice_demon,
+		/mob/living/basic/mining/ice_demon,
 		/mob/living/basic/mining/ice_whelp,
 		/mob/living/basic/mining/lobstrosity,
 		/mob/living/simple_animal/hostile/asteroid/polarbear,

tgstation.dme

@@ -922,6 +922,7 @@
 #include "code\datums\ai\basic_mobs\basic_subtrees\stare_at_thing.dm"
 #include "code\datums\ai\basic_mobs\basic_subtrees\target_retaliate.dm"
 #include "code\datums\ai\basic_mobs\basic_subtrees\targeted_mob_ability.dm"
+#include "code\datums\ai\basic_mobs\basic_subtrees\teleport_away_from_target.dm"
 #include "code\datums\ai\basic_mobs\basic_subtrees\tipped_subtree.dm"
 #include "code\datums\ai\basic_mobs\basic_subtrees\travel_to_point.dm"
 #include "code\datums\ai\basic_mobs\basic_subtrees\use_mob_ability.dm"
@@ -1100,6 +1101,7 @@
 #include "code\datums\components\itembound.dm"
 #include "code\datums\components\itempicky.dm"
 #include "code\datums\components\jetpack.dm"
+#include "code\datums\components\joint_damage.dm"
 #include "code\datums\components\jousting.dm"
 #include "code\datums\components\keep_me_secure.dm"
 #include "code\datums\components\knockoff.dm"
@@ -4465,6 +4467,9 @@
 #include "code\modules\mob\living\basic\heretic\raw_prophet.dm"
 #include "code\modules\mob\living\basic\heretic\rust_walker.dm"
 #include "code\modules\mob\living\basic\heretic\star_gazer.dm"
+#include "code\modules\mob\living\basic\icemoon\ice_demon\ice_demon.dm"
+#include "code\modules\mob\living\basic\icemoon\ice_demon\ice_demon_abilities.dm"
+#include "code\modules\mob\living\basic\icemoon\ice_demon\ice_demon_ai.dm"
 #include "code\modules\mob\living\basic\icemoon\ice_whelp\ice_whelp.dm"
 #include "code\modules\mob\living\basic\icemoon\ice_whelp\ice_whelp_abilities.dm"
 #include "code\modules\mob\living\basic\icemoon\ice_whelp\ice_whelp_ai.dm"
@@ -4828,7 +4833,6 @@
 #include "code\modules\mob\living\simple_animal\hostile\megafauna\wendigo.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mining_mobs\curse_blob.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mining_mobs\gutlunch.dm"
-#include "code\modules\mob\living\simple_animal\hostile\mining_mobs\ice_demon.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mining_mobs\mining_mobs.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mining_mobs\polarbear.dm"
 #include "code\modules\mob\living\simple_animal\hostile\mining_mobs\wolf.dm"
@@ -6149,6 +6153,7 @@
 #include "modular_skyrat\master_files\code\modules\mob\living\living.dm"
 #include "modular_skyrat\master_files\code\modules\mob\living\living_defines.dm"
 #include "modular_skyrat\master_files\code\modules\mob\living\living_movement.dm"
+#include "modular_skyrat\master_files\code\modules\mob\living\basic\icemoon\ice_demon.dm"
 #include "modular_skyrat\master_files\code\modules\mob\living\carbon\death.dm"
 #include "modular_skyrat\master_files\code\modules\mob\living\carbon\human.dm"
 #include "modular_skyrat\master_files\code\modules\mob\living\carbon\human_helpers.dm"

tools/UpdatePaths/Scripts/78539_ice_demons.txt

@@ -0,0 +1 @@
+/mob/living/simple_animal/hostile/asteroid/ice_demon : /mob/living/basic/mining/ice_demon{@OLD}