Merge branch 'master' of https://github.com/Citadel-Station-13/Citadel-Station-13 into Ghommie-cit28

code/datums/components/orbiter.dm

@@ -0,0 +1,156 @@
+/datum/component/orbiter
+	dupe_mode = COMPONENT_DUPE_UNIQUE_PASSARGS
+	var/list/orbiters
+	var/datum/callback/orbiter_spy
+	var/datum/callback/orbited_spy
+
+//radius: range to orbit at, radius of the circle formed by orbiting (in pixels)
+//clockwise: whether you orbit clockwise or anti clockwise
+//rotation_speed: how fast to rotate (how many ds should it take for a rotation to complete)
+//rotation_segments: the resolution of the orbit circle, less = a more block circle, this can be used to produce hexagons (6 segments) triangles (3 segments), and so on, 36 is the best default.
+//pre_rotation: Chooses to rotate src 90 degress towards the orbit dir (clockwise/anticlockwise), useful for things to go "head first" like ghosts
+/datum/component/orbiter/Initialize(atom/movable/orbiter, radius, clockwise, rotation_speed, rotation_segments, pre_rotation)
+	if(!istype(orbiter) || !isatom(parent) || isarea(parent))
+		return COMPONENT_INCOMPATIBLE
+
+	orbiters = list()
+	orbiter_spy = CALLBACK(src, .proc/orbiter_move_react)
+	orbited_spy = CALLBACK(src, .proc/move_react)
+
+	var/atom/master = parent
+	master.orbiters = src
+
+	begin_orbit(orbiter, radius, clockwise, rotation_speed, rotation_segments, pre_rotation)
+
+/datum/component/orbiter/RegisterWithParent()
+	var/atom/target = parent
+	while(ismovableatom(target))
+		RegisterSignal(target, COMSIG_MOVABLE_MOVED, orbited_spy)
+		target = target.loc
+
+/datum/component/orbiter/UnregisterFromParent()
+	var/atom/target = parent
+	while(ismovableatom(target))
+		UnregisterSignal(target, COMSIG_MOVABLE_MOVED)
+		target = target.loc
+
+/datum/component/orbiter/Destroy()
+	var/atom/master = parent
+	master.orbiters = null
+	for(var/i in orbiters)
+		end_orbit(i)
+	orbiters = null
+	QDEL_NULL(orbiter_spy)
+	QDEL_NULL(orbited_spy)
+	return ..()
+
+/datum/component/orbiter/InheritComponent(datum/component/orbiter/newcomp, original, list/arguments)
+	if(arguments)
+		begin_orbit(arglist(arguments))
+		return
+	// The following only happens on component transfers
+	orbiters += newcomp.orbiters
+
+/datum/component/orbiter/PostTransfer()
+	if(!isatom(parent) || isarea(parent) || !get_turf(parent))
+		return COMPONENT_INCOMPATIBLE
+	move_react()
+
+/datum/component/orbiter/proc/begin_orbit(atom/movable/orbiter, radius, clockwise, rotation_speed, rotation_segments, pre_rotation)
+	if(orbiter.orbiting)
+		if(orbiter.orbiting == src)
+			orbiter.orbiting.end_orbit(orbiter, TRUE)
+		else
+			orbiter.orbiting.end_orbit(orbiter)
+	orbiters[orbiter] = TRUE
+	orbiter.orbiting = src
+	RegisterSignal(orbiter, COMSIG_MOVABLE_MOVED, orbiter_spy)
+	var/matrix/initial_transform = matrix(orbiter.transform)
+
+	// Head first!
+	if(pre_rotation)
+		var/matrix/M = matrix(orbiter.transform)
+		var/pre_rot = 90
+		if(!clockwise)
+			pre_rot = -90
+		M.Turn(pre_rot)
+		orbiter.transform = M
+
+	var/matrix/shift = matrix(orbiter.transform)
+	shift.Translate(0, radius)
+	orbiter.transform = shift
+
+	orbiter.SpinAnimation(rotation_speed, -1, clockwise, rotation_segments, parallel = FALSE)
+
+	//we stack the orbits up client side, so we can assign this back to normal server side without it breaking the orbit
+	orbiter.transform = initial_transform
+	orbiter.forceMove(get_turf(parent))
+	to_chat(orbiter, "<span class='notice'>Now orbiting [parent].</span>")
+
+/datum/component/orbiter/proc/end_orbit(atom/movable/orbiter, refreshing=FALSE)
+	if(!orbiters[orbiter])
+		return
+	UnregisterSignal(orbiter, COMSIG_MOVABLE_MOVED)
+	orbiter.SpinAnimation(0, 0)
+	orbiters -= orbiter
+	orbiter.stop_orbit(src)
+	orbiter.orbiting = null
+	if(!refreshing && !length(orbiters) && !QDELING(src))
+		qdel(src)
+
+// This proc can receive signals by either the thing being directly orbited or anything holding it
+/datum/component/orbiter/proc/move_react(atom/orbited, atom/oldloc, direction)
+	set waitfor = FALSE // Transfer calls this directly and it doesnt care if the ghosts arent done moving
+
+	var/atom/movable/master = parent
+	if(master.loc == oldloc)
+		return
+
+	var/turf/newturf = get_turf(master)
+	if(!newturf)
+		qdel(src)
+
+	// Handling the signals of stuff holding us (or not anymore)
+	// These are prety rarely activated, how often are you following something in a bag?
+	if(oldloc && !isturf(oldloc)) // We used to be registered to it, probably
+		var/atom/target = oldloc
+		while(ismovableatom(target))
+			UnregisterSignal(target, COMSIG_MOVABLE_MOVED)
+			target = target.loc
+	if(orbited?.loc && orbited.loc != newturf) // We want to know when anything holding us moves too
+		var/atom/target = orbited.loc
+		while(ismovableatom(target))
+			RegisterSignal(target, COMSIG_MOVABLE_MOVED, orbited_spy, TRUE)
+			target = target.loc
+
+	var/atom/curloc = master.loc
+	for(var/i in orbiters)
+		var/atom/movable/thing = i
+		if(QDELETED(thing) || thing.loc == newturf)
+			continue
+		thing.forceMove(newturf)
+		if(CHECK_TICK && master.loc != curloc)
+			// We moved again during the checktick, cancel current operation
+			break
+
+
+/datum/component/orbiter/proc/orbiter_move_react(atom/movable/orbiter, atom/oldloc, direction)
+	if(orbiter.loc == get_turf(parent))
+		return
+	end_orbit(orbiter)
+
+/////////////////////
+
+/atom/movable/proc/orbit(atom/A, radius = 10, clockwise = FALSE, rotation_speed = 20, rotation_segments = 36, pre_rotation = TRUE)
+	if(!istype(A) || !get_turf(A) || A == src)
+		return
+
+	return A.AddComponent(/datum/component/orbiter, src, radius, clockwise, rotation_speed, rotation_segments, pre_rotation)
+
+/atom/movable/proc/stop_orbit(datum/component/orbiter/orbits)
+	return // We're just a simple hook
+
+/atom/proc/transfer_observers_to(atom/target)
+	if(!orbiters || !istype(target) || !get_turf(target) || target == src)
+		return
+	target.TakeComponent(orbiters)

code/datums/components/storage/concrete/emergency.dm

@@ -20,3 +20,4 @@
 /datum/component/storage/concrete/emergency/proc/unlock_me(datum/source)
 	if(locked)
 		set_locked(source, FALSE)
+		return TRUE