Merge pull request #4066 from Citadel-Station-13/upstream-merge-32701

[MIRROR] Refactor chasm paths to be more sane
2017-11-22 19:40:55 +00:00
parent 293025e6c4 0008da671a
commit 11ecf4d922
11 changed files with 178 additions and 151 deletions
@@ -1,5 +1,5 @@
 /datum/component/archaeology
-	dupe_type = COMPONENT_DUPE_UNIQUE
+	dupe_mode = COMPONENT_DUPE_UNIQUE
 	var/list/archdrops
 	var/prob2drop
 	var/dug
@@ -0,0 +1,132 @@
+// Used by /turf/open/chasm and subtypes to implement the "dropping" mechanic
+/datum/component/chasm
+	var/turf/target_turf
+	var/fall_message = "GAH! Ah... where are you?"
+	var/oblivion_message = "You stumble and stare into the abyss before you. It stares back, and you fall into the enveloping dark."
+
+	var/static/list/falling_atoms = list() // Atoms currently falling into chasms
+	var/static/list/forbidden_types = typecacheof(list(
+		/obj/singularity,
+		/obj/structure/lattice,
+		/obj/structure/stone_tile,
+		/obj/item/projectile,
+		/obj/effect/portal,
+		/obj/effect/abstract,
+		/obj/effect/temp_visual,
+		/obj/effect/light_emitter/tendril,
+		/obj/effect/collapse))
+
+/datum/component/chasm/Initialize(turf/target)
+	RegisterSignal(list(COMSIG_MOVABLE_CROSSED, COMSIG_ATOM_ENTERED), .proc/Entered)
+	target_turf = target
+	START_PROCESSING(SSobj, src) // process on create, in case stuff is still there
+
+/datum/component/chasm/proc/Entered(atom/movable/AM)
+	START_PROCESSING(SSobj, src)
+	drop_stuff(AM)
+
+/datum/component/chasm/process()
+	if (!drop_stuff())
+		STOP_PROCESSING(SSobj, src)
+
+/datum/component/chasm/proc/is_safe()
+	//if anything matching this typecache is found in the chasm, we don't drop things
+	var/static/list/chasm_safeties_typecache = typecacheof(list(/obj/structure/lattice/catwalk, /obj/structure/stone_tile))
+
+	var/atom/parent = src.parent
+	var/list/found_safeties = typecache_filter_list(parent.contents, chasm_safeties_typecache)
+	for(var/obj/structure/stone_tile/S in found_safeties)
+		if(S.fallen)
+			LAZYREMOVE(found_safeties, S)
+	return LAZYLEN(found_safeties)
+
+/datum/component/chasm/proc/drop_stuff(AM)
+	. = 0
+	if (is_safe())
+		return FALSE
+
+	var/atom/parent = src.parent
+	var/to_check = AM ? list(AM) : parent.contents
+	for (var/thing in to_check)
+		if (droppable(thing))
+			. = 1
+			INVOKE_ASYNC(src, .proc/drop, thing)
+
+/datum/component/chasm/proc/droppable(atom/movable/AM)
+	// avoid an infinite loop, but allow falling a large distance
+	if(falling_atoms[AM] && falling_atoms[AM] > 30)
+		return FALSE
+	if(!isliving(AM) && !isobj(AM))
+		return FALSE
+	if(is_type_in_typecache(AM, forbidden_types) || AM.throwing || AM.floating)
+		return FALSE
+	//Flies right over the chasm
+	if(isliving(AM))
+		var/mob/M = AM
+		if(M.is_flying())
+			return FALSE
+	if(ishuman(AM))
+		var/mob/living/carbon/human/H = AM
+		if(istype(H.belt, /obj/item/device/wormhole_jaunter))
+			var/obj/item/device/wormhole_jaunter/J = H.belt
+			//To freak out any bystanders
+			H.visible_message("<span class='boldwarning'>[H] falls into [parent]!</span>")
+			J.chasm_react(H)
+			return FALSE
+	return TRUE
+
+/datum/component/chasm/proc/drop(atom/movable/AM)
+	//Make sure the item is still there after our sleep
+	if(!AM || QDELETED(AM))
+		return
+	falling_atoms[AM] = (falling_atoms[AM] || 0) + 1
+	var/turf/T = target_turf
+
+	if(T)
+		// send to the turf below
+		AM.visible_message("<span class='boldwarning'>[AM] falls into [parent]!</span>", "<span class='userdanger'>[fall_message]</span>")
+		T.visible_message("<span class='boldwarning'>[AM] falls from above!</span>")
+		AM.forceMove(T)
+		if(isliving(AM))
+			var/mob/living/L = AM
+			L.Knockdown(100)
+			L.adjustBruteLoss(30)
+		falling_atoms -= AM
+
+	else
+		// send to oblivion
+		AM.visible_message("<span class='boldwarning'>[AM] falls into [parent]!</span>", "<span class='userdanger'>[oblivion_message]</span>")
+		if (isliving(AM))
+			var/mob/living/L = AM
+			L.notransform = TRUE
+			L.Stun(200)
+			L.resting = TRUE
+
+		var/oldtransform = AM.transform
+		var/oldcolor = AM.color
+		var/oldalpha = AM.alpha
+		animate(AM, transform = matrix() - matrix(), alpha = 0, color = rgb(0, 0, 0), time = 10)
+		for(var/i in 1 to 5)
+			//Make sure the item is still there after our sleep
+			if(!AM || QDELETED(AM))
+				return
+			AM.pixel_y--
+			sleep(2)
+
+		//Make sure the item is still there after our sleep
+		if(!AM || QDELETED(AM))
+			return
+
+		if(iscyborg(AM))
+			var/mob/living/silicon/robot/S = AM
+			qdel(S.mmi)
+
+		falling_atoms -= AM
+		qdel(AM)
+		if(AM && !QDELETED(AM))	//It's indestructible
+			var/atom/parent = src.parent
+			parent.visible_message("<span class='boldwarning'>[parent] spits out [AM]!</span>")
+			AM.alpha = oldalpha
+			AM.color = oldcolor
+			AM.transform = oldtransform
+			AM.throw_at(get_edge_target_turf(parent,pick(GLOB.alldirs)),rand(1, 10),rand(1, 10))