[MIRROR] Adds the hat mystery box (#12825)

Co-authored-by: Guti <32563288+TheCaramelion@users.noreply.github.com>

code/datums/components/unusual_effect.dm

@@ -0,0 +1,41 @@
+/// Creates a cool looking effect on the movable.
+/datum/component/unusual_effect
+	dupe_mode = COMPONENT_DUPE_HIGHLANDER
+
+	var/obj/effect/abstract/particle_holder/special_effects
+
+	var/color
+
+	COOLDOWN_DECLARE(glow_cooldown)
+
+/datum/component/unusual_effect/Initialize(color, include_particles = FALSE)
+	var/atom/movable/parent_movable = parent
+	if(!istype(parent_movable))
+		return COMPONENT_INCOMPATIBLE
+
+	src.color = color
+	parent_movable.add_filter("unusual_effect", 2, list("type" = "outline", "color" = color, "size" = 2))
+	if(include_particles)
+		var/particles = pick(typesof(/particles/unusual_effect))
+		special_effects = new(parent_movable, particles)
+	START_PROCESSING(SSobj, src)
+
+/datum/component/unusual_effect/Destroy(force)
+	var/atom/movable/parent_movable = parent
+	if(istype(parent_movable))
+		parent_movable.remove_filter("unusual_effect")
+	STOP_PROCESSING(SSobj, src)
+	return ..()
+
+/datum/component/unusual_effect/process(seconds_per_tick)
+	var/atom/movable/parent_movable = parent
+	var/filter = parent_movable.get_filter("unusual_effect")
+	if(!filter)
+		parent_movable.add_filter("unusual_effect", 2, list("type" = "outline", "color" = color, "size" = 2))
+		return
+	if(!COOLDOWN_FINISHED(src, glow_cooldown))
+		return
+
+	animate(filter, alpha = 110, time = 1.5 SECONDS, loop = -1)
+	animate(alpha = 40, time = 2.5 SECONDS)
+	COOLDOWN_START(src, glow_cooldown, 4 SECONDS)

code/datums/supplypacks/recreation.dm

@@ -380,3 +380,10 @@
 	)
 	cost = 30
 	containertype = /obj/structure/closet/crate
+
+/datum/supply_pack/recreation/mystery_box/hat
+	name = "Hat Mystery Box"
+	desc = "Contains a crate with five random hats."
+	contains = list()
+	cost = 50
+	containertype = /obj/structure/largecrate/mysteryhats