TOOL!

code/game/objects/micro_event.dm

@@ -0,0 +1,55 @@
+/obj/structure/portal_event/resize
+	name = "portal"
+	desc = "It leads to someplace else!"
+	icon = 'icons/obj/stationobjs_vr.dmi'
+	icon_state = "type-d-portal"
+	var/shrinking = TRUE
+	var/size_limit = 0.5
+
+/obj/structure/portal_event/resize/attack_ghost(var/mob/observer/dead/user)
+	if(!target && user?.client?.holder)
+		if(tgui_alert(user, "Would you like to adjust the portal's size settings?", "Change portal size settings", list("No","Yes")) == "Yes")
+			var/our_message
+			if(tgui_alert(user, "Should this portal shrink people who are over the limit, or grow people who are under the limit?", "Change portal size settings", list("Shrink","Grow")) == "Shrink")
+				shrinking = TRUE
+				our_message = "What should the size limit be? Anyone over this limit will be shrunk to this size. (1 = 100%, etc)"
+			else
+				shrinking = FALSE
+				our_message = "What should the size limit be? Anyone under this limit will be grown to this size. (1 = 100%, etc)"
+
+			size_limit = tgui_input_number(user, our_message, "Pick a Size", 1)
+
+	return ..()
+
+/obj/structure/portal_event/resize/teleport(atom/movable/M as mob|obj)
+	if(!isliving(M))
+		return ..()
+	var/mob/living/ourmob = M
+	if(shrinking)
+		if(ourmob.size_multiplier > size_limit)
+			ourmob.resize(size_limit, FALSE, TRUE, TRUE)
+	else
+		if(ourmob.size_multiplier < size_limit)
+			ourmob.resize(size_limit, FALSE, TRUE, TRUE)
+
+	return ..()
+
+/obj/structure/portal_event/resize/preset_shrink_twentyfive
+	shrinking = TRUE
+	size_limit = 0.25
+
+/obj/structure/portal_event/resize/preset_shrink_fifty
+	shrinking = TRUE
+	size_limit = 0.5
+
+/obj/structure/portal_event/resize/preset_shrink_hundred
+	shrinking = TRUE
+	size_limit = 1
+
+/obj/structure/portal_event/resize/preset_grow_hundred
+	shrinking = FALSE
+	size_limit = 1
+
+/obj/structure/portal_event/resize/preset_grow_twohundred
+	shrinking = FALSE
+	size_limit = 2