Adds some chilling hallucinations (#70253)

Adds some new ice-based hallucinations

code/__DEFINES/traits.dm

@@ -844,6 +844,8 @@ Remember to update _globalvars/traits.dm if you're adding/removing/renaming trai
 #define ITEM_SCALING_TRAIT "item_scaling"
 /// Trait given by Objects that provide blindsight
 #define ITEM_BLIND_TRAIT "blind_item_trait"
+/// Trait given by hallucinations
+#define HALLUCINATION_TRAIT "hallucination_trait"
 
 /**
 * Trait granted by [/mob/living/carbon/Initialize] and

code/modules/hallucination/body.dm

@@ -7,6 +7,10 @@
 	var/body_image_state
 	/// The actual image we made and showed show.
 	var/image/shown_body
+	/// The layer this body will be drawn on, in case we want to bypass lighting
+	var/body_layer = TURF_LAYER
+	/// if TRUE, spawns the body under the hallucinator instead of somewhere in view
+	var/spawn_under_hallucinator = FALSE
 
 /datum/hallucination/body/start()
 	// This hallucination is purely visual, so we don't need to bother for clientless mobs
@@ -14,8 +18,11 @@
 		return FALSE
 
 	var/list/possible_points = list()
-	for(var/turf/open/floor/open_floor in view(hallucinator))
-		possible_points += open_floor
+	if(spawn_under_hallucinator)
+		possible_points += get_turf(hallucinator)
+	else
+		for(var/turf/open/floor/open_floor in view(hallucinator))
+			possible_points += open_floor
 
 	if(!length(possible_points))
 		return FALSE
@@ -23,6 +30,9 @@
 	shown_body = make_body_image(pick(possible_points))
 
 	hallucinator.client?.images |= shown_body
+	return queue_cleanup()
+
+/datum/hallucination/body/proc/queue_cleanup()
 	QDEL_IN(src, rand(3 SECONDS, 5 SECONDS)) //Only seen for a brief moment.
 	return TRUE
 
@@ -33,7 +43,7 @@
 
 /// Makes the image of the body to show at the location passed.
 /datum/hallucination/body/proc/make_body_image(turf/location)
-	return image(body_image_file, location, body_image_state, TURF_LAYER)
+	return image(body_image_file, location, body_image_state, body_layer)
 
 /datum/hallucination/body/husk
 	random_hallucination_weight = 4
@@ -54,3 +64,38 @@
 	random_hallucination_weight = 1
 	body_image_file = 'icons/mob/nonhuman-player/alien.dmi'
 	body_image_state = "alienother"
+
+/datum/hallucination/body/freezer
+	random_hallucination_weight = 1
+	body_image_file = 'icons/effects/effects.dmi'
+	body_image_state = "the_freezer"
+	body_layer = ABOVE_ALL_MOB_LAYER
+	spawn_under_hallucinator = TRUE
+
+/datum/hallucination/body/freezer/make_body_image(turf/location)
+	var/image/body = ..()
+	body.pixel_x = pick(rand(-208,-48), rand(48, 208))
+	body.pixel_y = pick(rand(-208,-48), rand(48, 208))
+	body.alpha = 245
+	SET_PLANE_EXPLICIT(body, ABOVE_HUD_PLANE, location)
+	return body
+
+/datum/hallucination/body/freezer/queue_cleanup()
+	QDEL_IN(src, 12 SECONDS) //The freezer stays on screen while you're frozen
+	addtimer(CALLBACK(src, .proc/freeze_player), 1 SECONDS) // You barely have a moment to react before you're frozen
+	addtimer(CALLBACK(src, .proc/freeze_intimidate), 11.8 SECONDS)
+	hallucinator.cause_hallucination(/datum/hallucination/fake_sound/weird/radio_static, "freezer hallucination")
+	return TRUE
+
+/datum/hallucination/body/freezer/proc/freeze_player()
+	if(QDELETED(src))
+		return
+	hallucinator.cause_hallucination(/datum/hallucination/ice, "freezer hallucination", duration = 11 SECONDS, play_freeze_sound = FALSE)
+
+
+/datum/hallucination/body/freezer/proc/freeze_intimidate()
+	if(QDELETED(src))
+		return
+	// Spook 'em before we delete
+	shown_body.pixel_x = (shown_body.pixel_x / 2)
+	shown_body.pixel_y = (shown_body.pixel_y / 2)

code/modules/hallucination/fake_sound.dm

@@ -274,3 +274,15 @@
 		'sound/voice/hiss3.ogg',
 		'sound/voice/hiss4.ogg',
 	)
+
+/datum/hallucination/fake_sound/weird/radio_static
+	volume = 75
+	no_source = TRUE
+	sound_vary = FALSE
+	sound_type = 'sound/hallucinations/radio_static.ogg'
+
+/datum/hallucination/fake_sound/weird/ice_crack
+	random_hallucination_weight = 2
+	volume = 100
+	no_source = TRUE
+	sound_type = 'sound/effects/ice_shovel.ogg'

code/modules/hallucination/ice_cube.dm

@@ -0,0 +1,44 @@
+/// Causes the hallucinator to believe themselves frozen in ice. Man am I glad he's frozen in there etc etc
+/datum/hallucination/ice
+	random_hallucination_weight = 3
+
+	/// What icon file to use for our hallucinator
+	var/ice_icon = 'icons/effects/freeze.dmi'
+	/// What icon state to use for our hallucinator
+	var/ice_icon_state = "ice_cube"
+	/// Our ice overlay we generate
+	var/image/ice_overlay
+	/// How long will we be frozen today
+	var/ice_duration
+	/// Will we play the ice freeze sound?
+	var/play_ice_sound
+
+/datum/hallucination/ice/New(mob/living/hallucinator, duration = 6 SECONDS, play_freeze_sound = TRUE)
+	src.ice_duration = duration
+	src.play_ice_sound = play_freeze_sound
+	return ..()
+
+/datum/hallucination/ice/start()
+	ice_overlay = image(ice_icon, hallucinator, ice_icon_state, ABOVE_MOB_LAYER)
+	hallucinator.client?.images |= ice_overlay
+	ADD_TRAIT(hallucinator, TRAIT_IMMOBILIZED, HALLUCINATION_TRAIT)
+	to_chat(hallucinator, span_userdanger("You become frozen in a cube!"))
+	hallucinator.cause_hallucination(/datum/hallucination/fake_alert/cold, "ice hallucination", duration = (ice_duration + 6 SECONDS))
+	if(play_ice_sound)
+		hallucinator.cause_hallucination(/datum/hallucination/fake_sound/weird/ice_crack, "ice hallucination")
+
+	hallucinator.set_jitter_if_lower(ice_duration + 6 SECONDS)
+	hallucinator.set_stutter_if_lower(ice_duration + 6 SECONDS)
+
+	QDEL_IN(src, ice_duration)
+	return TRUE
+
+/datum/hallucination/ice/Destroy()
+	unfreeze()
+	return ..()
+
+/datum/hallucination/ice/proc/unfreeze()
+	REMOVE_TRAIT(hallucinator, TRAIT_IMMOBILIZED, HALLUCINATION_TRAIT)
+	if(ice_overlay)
+		hallucinator.client?.images -= ice_overlay
+		ice_overlay = null

code/modules/unit_tests/hallucination_icons.dm

@@ -60,6 +60,12 @@
 
 		Fail("Hallucination image holder [image_holder] had an invalid / missing icon state for the icon [icon].")
 
+	// Test ice hallucination for if the ice cube icon state exists
+	var/datum/hallucination/ice/ice_hallucination = /datum/hallucination/ice
+	var/ice_hallucination_icon = initial(ice_hallucination.ice_icon)
+	var/ice_hallucination_icon_state = initial(ice_hallucination.ice_icon_state)
+	check_hallucination_icon(ice_hallucination, ice_hallucination_icon, ice_hallucination_icon_state)
+
 /datum/unit_test/hallucination_icons/proc/check_hallucination_icon(hallucination, icon, icon_state)
 	if(!icon)
 		Fail("Hallucination [hallucination] forgot to set its icon file.")

tgstation.dme

@@ -3088,6 +3088,7 @@
 #include "code\modules\hallucination\fake_sound.dm"
 #include "code\modules\hallucination\hazard.dm"
 #include "code\modules\hallucination\hud_screw.dm"
+#include "code\modules\hallucination\ice_cube.dm"
 #include "code\modules\hallucination\inhand_fake_item.dm"
 #include "code\modules\hallucination\nearby_fake_item.dm"
 #include "code\modules\hallucination\on_fire.dm"