Paradise/code/__HELPERS/unsorted.dm

//This file was auto-corrected by findeclaration.exe on 25.5.2012 20:42:31

/*
 * A large number of misc global procs.
 */

 /* Get the direction of startObj relative to endObj.
  * Return values: To the right, 1. Below, 2. To the left, 3. Above, 4. Not found adjacent in cardinal directions, 0.
  */
/proc/getRelativeDirection(var/atom/movable/startObj, var/atom/movable/endObj)
	if(endObj.x == startObj.x + 1 && endObj.y == startObj.y)
		return EAST

	if(endObj.x == startObj.x - 1 && endObj.y == startObj.y)
		return WEST

	if(endObj.y == startObj.y + 1 && endObj.x == startObj.x)
		return NORTH

	if(endObj.y == startObj.y - 1 && endObj.x == startObj.x)
		return SOUTH

	return 0

//Inverts the colour of an HTML string
/proc/invertHTML(HTMLstring)

	if(!( istext(HTMLstring) ))
		CRASH("Given non-text argument!")
		return
	else
		if(length(HTMLstring) != 7)
			CRASH("Given non-HTML argument!")
			return
	var/textr = copytext(HTMLstring, 2, 4)
	var/textg = copytext(HTMLstring, 4, 6)
	var/textb = copytext(HTMLstring, 6, 8)
	var/r = hex2num(textr)
	var/g = hex2num(textg)
	var/b = hex2num(textb)
	textr = num2hex(255 - r)
	textg = num2hex(255 - g)
	textb = num2hex(255 - b)
	if(length(textr) < 2)
		textr = text("0[]", textr)
	if(length(textg) < 2)
		textr = text("0[]", textg)
	if(length(textb) < 2)
		textr = text("0[]", textb)
	return text("#[][][]", textr, textg, textb)
	return

//Returns the middle-most value
/proc/dd_range(var/low, var/high, var/num)
	return max(low,min(high,num))

//Returns whether or not A is the middle most value
/proc/InRange(var/A, var/lower, var/upper)
	if(A < lower) return 0
	if(A > upper) return 0
	return 1


/proc/Get_Angle(atom/movable/start,atom/movable/end)//For beams.
	if(!start || !end) return 0
	var/dy
	var/dx
	dy=(32*end.y+end.pixel_y)-(32*start.y+start.pixel_y)
	dx=(32*end.x+end.pixel_x)-(32*start.x+start.pixel_x)
	if(!dy)
		return (dx>=0)?90:270
	.=arctan(dx/dy)
	if(dy<0)
		.+=180
	else if(dx<0)
		.+=360

//Returns location. Returns null if no location was found.
/proc/get_teleport_loc(turf/location,mob/target,distance = 1, density = 0, errorx = 0, errory = 0, eoffsetx = 0, eoffsety = 0)
/*
Location where the teleport begins, target that will teleport, distance to go, density checking 0/1(yes/no).
Random error in tile placement x, error in tile placement y, and block offset.
Block offset tells the proc how to place the box. Behind teleport location, relative to starting location, forward, etc.
Negative values for offset are accepted, think of it in relation to North, -x is west, -y is south. Error defaults to positive.
Turf and target are seperate in case you want to teleport some distance from a turf the target is not standing on or something.
*/

	var/dirx = 0//Generic location finding variable.
	var/diry = 0

	var/xoffset = 0//Generic counter for offset location.
	var/yoffset = 0

	var/b1xerror = 0//Generic placing for point A in box. The lower left.
	var/b1yerror = 0
	var/b2xerror = 0//Generic placing for point B in box. The upper right.
	var/b2yerror = 0

	errorx = abs(errorx)//Error should never be negative.
	errory = abs(errory)
	//var/errorxy = round((errorx+errory)/2)//Used for diagonal boxes.

	switch(target.dir)//This can be done through equations but switch is the simpler method. And works fast to boot.
	//Directs on what values need modifying.
		if(1)//North
			diry+=distance
			yoffset+=eoffsety
			xoffset+=eoffsetx
			b1xerror-=errorx
			b1yerror-=errory
			b2xerror+=errorx
			b2yerror+=errory
		if(2)//South
			diry-=distance
			yoffset-=eoffsety
			xoffset+=eoffsetx
			b1xerror-=errorx
			b1yerror-=errory
			b2xerror+=errorx
			b2yerror+=errory
		if(4)//East
			dirx+=distance
			yoffset+=eoffsetx//Flipped.
			xoffset+=eoffsety
			b1xerror-=errory//Flipped.
			b1yerror-=errorx
			b2xerror+=errory
			b2yerror+=errorx
		if(8)//West
			dirx-=distance
			yoffset-=eoffsetx//Flipped.
			xoffset+=eoffsety
			b1xerror-=errory//Flipped.
			b1yerror-=errorx
			b2xerror+=errory
			b2yerror+=errorx

	var/turf/destination=locate(location.x+dirx,location.y+diry,location.z)

	if(destination)//If there is a destination.
		if(errorx||errory)//If errorx or y were specified.
			var/destination_list[] = list()//To add turfs to list.
			//destination_list = new()
			/*This will draw a block around the target turf, given what the error is.
			Specifying the values above will basically draw a different sort of block.
			If the values are the same, it will be a square. If they are different, it will be a rectengle.
			In either case, it will center based on offset. Offset is position from center.
			Offset always calculates in relation to direction faced. In other words, depending on the direction of the teleport,
			the offset should remain positioned in relation to destination.*/

			var/turf/center = locate((destination.x+xoffset),(destination.y+yoffset),location.z)//So now, find the new center.

			//Now to find a box from center location and make that our destination.
			for(var/turf/T in block(locate(center.x+b1xerror,center.y+b1yerror,location.z), locate(center.x+b2xerror,center.y+b2yerror,location.z) ))
				if(density&&T.density)	continue//If density was specified.
				if(T.x>world.maxx || T.x<1)	continue//Don't want them to teleport off the map.
				if(T.y>world.maxy || T.y<1)	continue
				destination_list += T
			if(destination_list.len)
				destination = pick(destination_list)
			else	return

		else//Same deal here.
			if(density&&destination.density)	return
			if(destination.x>world.maxx || destination.x<1)	return
			if(destination.y>world.maxy || destination.y<1)	return
	else	return

	return destination

// Returns true if direction is blocked from loc
// Checks if doors are open
/proc/DirBlocked(turf/loc,var/dir)
	for(var/obj/structure/window/D in loc)
		if(!D.density)			continue
		if(D.is_fulltile())	return 1
		if(D.dir == dir)		return 1

	for(var/obj/machinery/door/D in loc)
		if(!D.density)//if the door is open
			continue
		else return 1	// if closed, it's a real, air blocking door
	return 0

/////////////////////////////////////////////////////////////////////////

/proc/getline(atom/M,atom/N)//Ultra-Fast Bresenham Line-Drawing Algorithm
	var/px=M.x		//starting x
	var/py=M.y
	var/line[] = list(locate(px,py,M.z))
	var/dx=N.x-px	//x distance
	var/dy=N.y-py
	var/dxabs=abs(dx)//Absolute value of x distance
	var/dyabs=abs(dy)
	var/sdx=SIGN(dx)	//Sign of x distance (+ or -)
	var/sdy=SIGN(dy)
	var/x=dxabs>>1	//Counters for steps taken, setting to distance/2
	var/y=dyabs>>1	//Bit-shifting makes me l33t.  It also makes getline() unnessecarrily fast.
	var/j			//Generic integer for counting
	if(dxabs>=dyabs)	//x distance is greater than y
		for(j=0;j<dxabs;j++)//It'll take dxabs steps to get there
			y+=dyabs
			if(y>=dxabs)	//Every dyabs steps, step once in y direction
				y-=dxabs
				py+=sdy
			px+=sdx		//Step on in x direction
			line+=locate(px,py,M.z)//Add the turf to the list
	else
		for(j=0;j<dyabs;j++)
			x+=dxabs
			if(x>=dyabs)
				x-=dyabs
				px+=sdx
			py+=sdy
			line+=locate(px,py,M.z)
	return line

//Returns whether or not a player is a guest using their ckey as an input
/proc/IsGuestKey(key)
	if(findtext(key, "Guest-", 1, 7) != 1) //was findtextEx
		return 0

	var/i, ch, len = length(key)

	for(i = 7, i <= len, ++i)
		ch = text2ascii(key, i)
		if(ch < 48 || ch > 57)
			return 0
	return 1

//Ensure the frequency is within bounds of what it should be sending/recieving at
/proc/sanitize_frequency(var/f, var/low = PUBLIC_LOW_FREQ, var/high = PUBLIC_HIGH_FREQ)
	f = round(f)
	f = max(low, f)
	f = min(high, f)
	if((f % 2) == 0) //Ensure the last digit is an odd number
		f += 1
	return f

//Turns 1479 into 147.9
/proc/format_frequency(var/f)
	return "[round(f / 10)].[f % 10]"

/obj/proc/atmosanalyzer_scan(var/datum/gas_mixture/air_contents, mob/user, var/obj/target = src)
	var/obj/icon = target
	user.visible_message("[user] has used the analyzer on [target].", "<span class='notice'>You use the analyzer on [target].</span>")
	var/pressure = air_contents.return_pressure()
	var/total_moles = air_contents.total_moles()

	to_chat(user, "<span class='notice'>Results of analysis of [bicon(icon)] [target].</span>")
	if(total_moles>0)
		var/o2_concentration = air_contents.oxygen/total_moles
		var/n2_concentration = air_contents.nitrogen/total_moles
		var/co2_concentration = air_contents.carbon_dioxide/total_moles
		var/plasma_concentration = air_contents.toxins/total_moles

		var/unknown_concentration =  1-(o2_concentration+n2_concentration+co2_concentration+plasma_concentration)

		to_chat(user, "<span class='notice'>Pressure: [round(pressure,0.1)] kPa</span>")
		to_chat(user, "<span class='notice'>Nitrogen: [round(n2_concentration*100)] %</span>")
		to_chat(user, "<span class='notice'>Oxygen: [round(o2_concentration*100)] %</span>")
		to_chat(user, "<span class='notice'>CO2: [round(co2_concentration*100)] %</span>")
		to_chat(user, "<span class='notice'>Plasma: [round(plasma_concentration*100)] %</span>")
		if(unknown_concentration>0.01)
			to_chat(user, "<span class='danger'>Unknown: [round(unknown_concentration*100)] %</span>")
		to_chat(user, "<span class='notice'>Temperature: [round(air_contents.temperature-T0C)] &deg;C</span>")
	else
		to_chat(user, "<span class='notice'>[target] is empty!</span>")
	return

//Picks a string of symbols to display as the law number for hacked or ion laws
/proc/ionnum()
	return "[pick("!","@","#","$","%","^","&","*")][pick("!","@","#","$","%","^","&","*")][pick("!","@","#","$","%","^","&","*")][pick("!","@","#","$","%","^","&","*")]"

//When an AI is activated, it can choose from a list of non-slaved borgs to have as a slave.
/proc/freeborg()
	var/select = null
	var/list/borgs = list()
	for(var/mob/living/silicon/robot/A in player_list)
		if(A.stat == 2 || A.connected_ai || A.scrambledcodes || istype(A,/mob/living/silicon/robot/drone))
			continue
		var/name = "[A.real_name] ([A.modtype] [A.braintype])"
		borgs[name] = A

	if(borgs.len)
		select = input("Unshackled borg signals detected:", "Borg selection", null, null) as null|anything in borgs
		return borgs[select]

//When a borg is activated, it can choose which AI it wants to be slaved to
/proc/active_ais()
	. = list()
	for(var/mob/living/silicon/ai/A in living_mob_list)
		if(A.stat == DEAD)
			continue
		if(A.control_disabled == 1)
			continue
		. += A
	return .

//Find an active ai with the least borgs. VERBOSE PROCNAME HUH!
/proc/select_active_ai_with_fewest_borgs()
	var/mob/living/silicon/ai/selected
	var/list/active = active_ais()
	for(var/mob/living/silicon/ai/A in active)
		if(!selected || (selected.connected_robots > A.connected_robots))
			selected = A

	return selected

/proc/select_active_ai(var/mob/user)
	var/list/ais = active_ais()
	if(ais.len)
		if(user)	. = input(usr,"AI signals detected:", "AI selection") in ais
		else		. = pick(ais)
	return .

/proc/get_sorted_mobs()
	var/list/old_list = getmobs()
	var/list/AI_list = list()
	var/list/Dead_list = list()
	var/list/keyclient_list = list()
	var/list/key_list = list()
	var/list/logged_list = list()
	for(var/named in old_list)
		var/mob/M = old_list[named]
		if(issilicon(M))
			AI_list |= M
		else if(isobserver(M) || M.stat == 2)
			Dead_list |= M
		else if(M.key && M.client)
			keyclient_list |= M
		else if(M.key)
			key_list |= M
		else
			logged_list |= M
		old_list.Remove(named)
	var/list/new_list = list()
	new_list += AI_list
	new_list += keyclient_list
	new_list += key_list
	new_list += logged_list
	new_list += Dead_list
	return new_list

//Returns a list of all mobs with their name
/proc/getmobs()

	var/list/mobs = sortmobs()
	var/list/names = list()
	var/list/creatures = list()
	var/list/namecounts = list()
	for(var/mob/M in mobs)
		var/name = M.name
		if(name in names)
			namecounts[name]++
			name = "[name] ([namecounts[name]])"
		else
			names.Add(name)
			namecounts[name] = 1
		if(M.real_name && M.real_name != M.name)
			name += " \[[M.real_name]\]"
		if(M.stat == 2)
			if(istype(M, /mob/dead/observer/))
				name += " \[ghost\]"
			else
				name += " \[dead\]"
		creatures[name] = M

	return creatures

//Orders mobs by type then by name
/proc/sortmobs()
	var/list/moblist = list()
	var/list/sortmob = sortAtom(mob_list)
	for(var/mob/living/silicon/ai/M in sortmob)
		moblist.Add(M)
		if(M.eyeobj)
			moblist.Add(M.eyeobj)
	for(var/mob/living/silicon/pai/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/silicon/robot/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/carbon/human/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/carbon/brain/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/carbon/alien/M in sortmob)
		moblist.Add(M)
	for(var/mob/dead/observer/M in sortmob)
		moblist.Add(M)
	for(var/mob/new_player/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/carbon/slime/M in sortmob)
		moblist.Add(M)
	for(var/mob/living/simple_animal/M in sortmob)
		moblist.Add(M)
	return moblist

//E = MC^2
/proc/convert2energy(var/M)
	var/E = M*(SPEED_OF_LIGHT_SQ)
	return E

//M = E/C^2
/proc/convert2mass(var/E)
	var/M = E/(SPEED_OF_LIGHT_SQ)
	return M

//Forces a variable to be posative
/proc/modulus(var/M)
	if(M >= 0)
		return M
	if(M < 0)
		return -M

/proc/get_mob_by_ckey(key)
	if(!key)
		return
	for(var/mob/M in mob_list)
		if(M.ckey == key)
			return M

// Returns the atom sitting on the turf.
// For example, using this on a disk, which is in a bag, on a mob, will return the mob because it's on the turf.
/proc/get_atom_on_turf(var/atom/movable/M)
	var/atom/loc = M
	while(loc && loc.loc && !istype(loc.loc, /turf/))
		loc = loc.loc
	return loc

/*
Returns 1 if the chain up to the area contains the given typepath
0 otherwise
*/
/atom/proc/is_found_within(var/typepath)
	var/atom/A = src
	while(A.loc)
		if(istype(A.loc, typepath))
			return 1
		A = A.loc
	return 0

// the on-close client verb
// called when a browser popup window is closed after registering with proc/onclose()
// if a valid atom reference is supplied, call the atom's Topic() with "close=1"
// otherwise, just reset the client mob's machine var.


// returns the turf located at the map edge in the specified direction relative to A
// used for mass driver
/proc/get_edge_target_turf(var/atom/A, var/direction)

	var/turf/target = locate(A.x, A.y, A.z)
	if(!A || !target)
		return 0
		//since NORTHEAST == NORTH & EAST, etc, doing it this way allows for diagonal mass drivers in the future
		//and isn't really any more complicated

		// Note diagonal directions won't usually be accurate
	if(direction & NORTH)
		target = locate(target.x, world.maxy, target.z)
	if(direction & SOUTH)
		target = locate(target.x, 1, target.z)
	if(direction & EAST)
		target = locate(world.maxx, target.y, target.z)
	if(direction & WEST)
		target = locate(1, target.y, target.z)

	return target

// returns turf relative to A in given direction at set range
// result is bounded to map size
// note range is non-pythagorean
// used for disposal system
/proc/get_ranged_target_turf(var/atom/A, var/direction, var/range)

	var/x = A.x
	var/y = A.y
	if(direction & NORTH)
		y = min(world.maxy, y + range)
	if(direction & SOUTH)
		y = max(1, y - range)
	if(direction & EAST)
		x = min(world.maxx, x + range)
	if(direction & WEST)
		x = max(1, x - range)

	return locate(x,y,A.z)


// returns turf relative to A offset in dx and dy tiles
// bound to map limits
/proc/get_offset_target_turf(var/atom/A, var/dx, var/dy)
	var/x = min(world.maxx, max(1, A.x + dx))
	var/y = min(world.maxy, max(1, A.y + dy))
	return locate(x,y,A.z)

//Makes sure MIDDLE is between LOW and HIGH. If not, it adjusts it. Returns the adjusted value.
/proc/between(var/low, var/middle, var/high)
	return max(min(middle, high), low)

proc/arctan(x)
	var/y=arcsin(x/sqrt(1+x*x))
	return y

//returns random gauss number
proc/GaussRand(var/sigma)
  var/x,y,rsq
  do
    x=2*rand()-1
    y=2*rand()-1
    rsq=x*x+y*y
  while(rsq>1 || !rsq)
  return sigma*y*sqrt(-2*log(rsq)/rsq)

//returns random gauss number, rounded to 'roundto'
proc/GaussRandRound(var/sigma,var/roundto)
	return round(GaussRand(sigma),roundto)

proc/anim(turf/location as turf,target as mob|obj,a_icon,a_icon_state as text,flick_anim as text,sleeptime = 0,direction as num)
//This proc throws up either an icon or an animation for a specified amount of time.
//The variables should be apparent enough.
	var/atom/movable/overlay/animation = new(location)
	if(direction)
		animation.dir = direction
	animation.icon = a_icon
	animation.layer = target:layer+1
	if(a_icon_state)
		animation.icon_state = a_icon_state
	else
		animation.icon_state = "blank"
		animation.master = target
		flick(flick_anim, animation)
	sleep(max(sleeptime, 15))
	qdel(animation)

//Will return the contents of an atom recursivly to a depth of 'searchDepth'
/atom/proc/GetAllContents(searchDepth = 5)
	var/list/toReturn = list()

	for(var/atom/part in contents)
		toReturn += part
		if(part.contents.len && searchDepth)
			toReturn += part.GetAllContents(searchDepth - 1)

	return toReturn

//Step-towards method of determining whether one atom can see another. Similar to viewers()
/proc/can_see(var/atom/source, var/atom/target, var/length=5) // I couldnt be arsed to do actual raycasting :I This is horribly inaccurate.
	var/turf/current = get_turf(source)
	var/turf/target_turf = get_turf(target)
	var/steps = 0

	while(current != target_turf)
		if(steps > length) return 0
		if(current.opacity) return 0
		for(var/atom/A in current)
			if(A.opacity) return 0
		current = get_step_towards(current, target_turf)
		steps++

	return 1

/proc/is_blocked_turf(var/turf/T)
	var/cant_pass = 0
	if(T.density) cant_pass = 1
	for(var/atom/A in T)
		if(A.density)//&&A.anchored
			cant_pass = 1
	return cant_pass

/proc/get_step_towards2(var/atom/ref , var/atom/trg)
	var/base_dir = get_dir(ref, get_step_towards(ref,trg))
	var/turf/temp = get_step_towards(ref,trg)

	if(is_blocked_turf(temp))
		var/dir_alt1 = turn(base_dir, 90)
		var/dir_alt2 = turn(base_dir, -90)
		var/turf/turf_last1 = temp
		var/turf/turf_last2 = temp
		var/free_tile = null
		var/breakpoint = 0

		while(!free_tile && breakpoint < 10)
			if(!is_blocked_turf(turf_last1))
				free_tile = turf_last1
				break
			if(!is_blocked_turf(turf_last2))
				free_tile = turf_last2
				break
			turf_last1 = get_step(turf_last1,dir_alt1)
			turf_last2 = get_step(turf_last2,dir_alt2)
			breakpoint++

		if(!free_tile) return get_step(ref, base_dir)
		else return get_step_towards(ref,free_tile)

	else return get_step(ref, base_dir)

//Takes: Anything that could possibly have variables and a varname to check.
//Returns: 1 if found, 0 if not.
/proc/hasvar(var/datum/A, var/varname)
	if(A.vars.Find(lowertext(varname))) return 1
	else return 0

//Returns: all the areas in the world
/proc/return_areas()
	var/list/area/areas = list()
	for(var/area/A in world)
		areas += A
	return areas

//Returns: all the areas in the world, sorted.
/proc/return_sorted_areas()
	return sortAtom(return_areas())

//Takes: Area type as text string or as typepath OR an instance of the area.
//Returns: A list of all areas of that type in the world.
/proc/get_areas(var/areatype)
	if(!areatype) return null
	if(istext(areatype)) areatype = text2path(areatype)
	if(isarea(areatype))
		var/area/areatemp = areatype
		areatype = areatemp.type

	var/list/areas = new/list()
	for(var/area/N in world)
		if(istype(N, areatype)) areas += N
	return areas

//Takes: Area type as text string or as typepath OR an instance of the area.
//Returns: A list of all turfs in areas of that type of that type in the world.
/proc/get_area_turfs(var/areatype)
	if(!areatype) return null
	if(istext(areatype)) areatype = text2path(areatype)
	if(isarea(areatype))
		var/area/areatemp = areatype
		areatype = areatemp.type

	var/list/turfs = new/list()
	for(var/area/N in world)
		if(istype(N, areatype))
			for(var/turf/T in N) turfs += T
	return turfs

//Takes: Area type as text string or as typepath OR an instance of the area.
//Returns: A list of all atoms	(objs, turfs, mobs) in areas of that type of that type in the world.
/proc/get_area_all_atoms(var/areatype)
	if(!areatype) return null
	if(istext(areatype)) areatype = text2path(areatype)
	if(isarea(areatype))
		var/area/areatemp = areatype
		areatype = areatemp.type

	var/list/atoms = new/list()
	for(var/area/N in world)
		if(istype(N, areatype))
			for(var/atom/A in N)
				atoms += A
	return atoms

/datum/coords //Simple datum for storing coordinates.
	var/x_pos = null
	var/y_pos = null
	var/z_pos = null

/area/proc/move_contents_to(var/area/A, var/turftoleave=null, var/direction = null)
	//Takes: Area. Optional: turf type to leave behind.
	//Returns: Nothing.
	//Notes: Attempts to move the contents of one area to another area.
	//       Movement based on lower left corner. Tiles that do not fit
	//		 into the new area will not be moved.

	if(!A || !src) return 0

	var/list/turfs_src = get_area_turfs(src.type)
	var/list/turfs_trg = get_area_turfs(A.type)

	var/src_min_x = 0
	var/src_min_y = 0
	for(var/turf/T in turfs_src)
		if(T.x < src_min_x || !src_min_x) src_min_x	= T.x
		if(T.y < src_min_y || !src_min_y) src_min_y	= T.y

	var/trg_min_x = 0
	var/trg_min_y = 0
	for(var/turf/T in turfs_trg)
		if(T.x < trg_min_x || !trg_min_x) trg_min_x	= T.x
		if(T.y < trg_min_y || !trg_min_y) trg_min_y	= T.y

	var/list/refined_src = new/list()
	for(var/turf/T in turfs_src)
		refined_src += T
		refined_src[T] = new/datum/coords
		var/datum/coords/C = refined_src[T]
		C.x_pos = (T.x - src_min_x)
		C.y_pos = (T.y - src_min_y)

	var/list/refined_trg = new/list()
	for(var/turf/T in turfs_trg)
		refined_trg += T
		refined_trg[T] = new/datum/coords
		var/datum/coords/C = refined_trg[T]
		C.x_pos = (T.x - trg_min_x)
		C.y_pos = (T.y - trg_min_y)

	var/list/fromupdate = new/list()
	var/list/toupdate = new/list()

	moving:
		for(var/turf/T in refined_src)
			var/datum/coords/C_src = refined_src[T]
			for(var/turf/B in refined_trg)
				var/datum/coords/C_trg = refined_trg[B]
				if(C_src.x_pos == C_trg.x_pos && C_src.y_pos == C_trg.y_pos)

					var/old_dir1 = T.dir
					var/old_icon_state1 = T.icon_state
					var/old_icon1 = T.icon

					var/turf/X = B.ChangeTurf(T.type)
					X.dir = old_dir1
					X.icon_state = old_icon_state1
					X.icon = old_icon1 //Shuttle floors are in shuttle.dmi while the defaults are floors.dmi

					// Give the new turf our air, if simulated
					if(istype(X, /turf/simulated) && istype(T, /turf/simulated))
						var/turf/simulated/sim = X
						sim.copy_air_with_tile(T)


					/* Quick visual fix for some weird shuttle corner artefacts when on transit space tiles */
					if(direction && findtext(X.icon_state, "swall_s"))

						// Spawn a new shuttle corner object
						var/obj/corner = new()
						corner.loc = X
						corner.density = 1
						corner.anchored = 1
						corner.icon = X.icon
						corner.icon_state = replacetext(X.icon_state, "_s", "_f")
						corner.tag = "delete me"
						corner.name = "wall"

						// Find a new turf to take on the property of
						var/turf/nextturf = get_step(corner, direction)
						if(!nextturf || !istype(nextturf, /turf/space))
							nextturf = get_step(corner, turn(direction, 180))


						// Take on the icon of a neighboring scrolling space icon
						X.icon = nextturf.icon
						X.icon_state = nextturf.icon_state


					for(var/obj/O in T)

						// Reset the shuttle corners
						if(O.tag == "delete me")
							X.icon = 'icons/turf/shuttle.dmi'
							X.icon_state = replacetext(O.icon_state, "_f", "_s") // revert the turf to the old icon_state
							X.name = "wall"
							qdel(O) // prevents multiple shuttle corners from stacking
							continue
						if(!istype(O,/obj)) continue
						O.loc.Exited(O)
						O.setLoc(X,teleported=1)
						O.loc.Entered(O)
					for(var/mob/M in T)
						if(!M.move_on_shuttle)
							continue
						M.loc = X

//					var/area/AR = X.loc

//					if(AR.lighting_use_dynamic)							//TODO: rewrite this code so it's not messed by lighting ~Carn
//						X.opacity = !X.opacity
//						X.set_opacity(!X.opacity)

					toupdate += X

					if(turftoleave)
						fromupdate += T.ChangeTurf(turftoleave)
					else
						T.ChangeTurf(/turf/space)

					refined_src -= T
					refined_trg -= B
					continue moving

	if(toupdate.len)
		for(var/turf/simulated/T1 in toupdate)
			air_master.remove_from_active(T1)
			T1.CalculateAdjacentTurfs()
			air_master.add_to_active(T1,1)

	if(fromupdate.len)
		for(var/turf/simulated/T2 in fromupdate)
			air_master.remove_from_active(T2)
			T2.CalculateAdjacentTurfs()
			air_master.add_to_active(T2,1)




/proc/DuplicateObject(obj/original, var/perfectcopy = 0 , var/sameloc = 0, var/atom/newloc = null)
	if(!original)
		return null

	var/obj/O = null

	if(sameloc)
		O=new original.type(original.loc)
	else
		O=new original.type(newloc)

	if(perfectcopy)
		if((O) && (original))
			var/static/list/forbidden_vars = list("type","loc","locs","vars", "parent","parent_type", "verbs","ckey","key","power_supply","contents","reagents","stat","x","y","z","group")

			for(var/V in original.vars - forbidden_vars)
				if(istype(original.vars[V],/list))
					var/list/L = original.vars[V]
					O.vars[V] = L.Copy()
				else if(istype(original.vars[V],/datum))
					continue	// this would reference the original's object, that will break when it is used or deleted.
				else
					O.vars[V] = original.vars[V]
	if(istype(O))
		O.update_icon()
	return O

/area/proc/copy_contents_to(var/area/A , var/platingRequired = 0 )
	//Takes: Area. Optional: If it should copy to areas that don't have plating
	//Returns: Nothing.
	//Notes: Attempts to move the contents of one area to another area.
	//       Movement based on lower left corner. Tiles that do not fit
	//		 into the new area will not be moved.

	if(!A || !src) return 0

	var/list/turfs_src = get_area_turfs(src.type)
	var/list/turfs_trg = get_area_turfs(A.type)

	var/src_min_x = 0
	var/src_min_y = 0
	for(var/turf/T in turfs_src)
		if(T.x < src_min_x || !src_min_x) src_min_x	= T.x
		if(T.y < src_min_y || !src_min_y) src_min_y	= T.y

	var/trg_min_x = 0
	var/trg_min_y = 0
	for(var/turf/T in turfs_trg)
		if(T.x < trg_min_x || !trg_min_x) trg_min_x	= T.x
		if(T.y < trg_min_y || !trg_min_y) trg_min_y	= T.y

	var/list/refined_src = new/list()
	for(var/turf/T in turfs_src)
		refined_src += T
		refined_src[T] = new/datum/coords
		var/datum/coords/C = refined_src[T]
		C.x_pos = (T.x - src_min_x)
		C.y_pos = (T.y - src_min_y)

	var/list/refined_trg = new/list()
	for(var/turf/T in turfs_trg)
		refined_trg += T
		refined_trg[T] = new/datum/coords
		var/datum/coords/C = refined_trg[T]
		C.x_pos = (T.x - trg_min_x)
		C.y_pos = (T.y - trg_min_y)

	var/list/toupdate = new/list()

	var/copiedobjs = list()


	moving:
		for(var/turf/T in refined_src)
			var/datum/coords/C_src = refined_src[T]
			for(var/turf/B in refined_trg)
				var/datum/coords/C_trg = refined_trg[B]
				if(C_src.x_pos == C_trg.x_pos && C_src.y_pos == C_trg.y_pos)

					var/old_dir1 = T.dir
					var/old_icon_state1 = T.icon_state
					var/old_icon1 = T.icon

					if(platingRequired)
						if(istype(B, /turf/space))
							continue moving

					var/turf/X = new T.type(B)
					X.dir = old_dir1
					X.icon_state = old_icon_state1
					X.icon = old_icon1 //Shuttle floors are in shuttle.dmi while the defaults are floors.dmi


					var/list/objs = new/list()
					var/list/newobjs = new/list()
					var/list/mobs = new/list()
					var/list/newmobs = new/list()

					for(var/obj/O in T)

						if(!istype(O,/obj))
							continue

						objs += O


					for(var/obj/O in objs)
						newobjs += DuplicateObject(O , 1)


					for(var/obj/O in newobjs)
						O.loc = X

					for(var/mob/M in T)

						if(!M.move_on_shuttle)
							continue
						mobs += M

					for(var/mob/M in mobs)
						newmobs += DuplicateObject(M , 1)

					for(var/mob/M in newmobs)
						M.loc = X

					copiedobjs += newobjs
					copiedobjs += newmobs



					for(var/V in T.vars)
						if(!(V in list("type","loc","locs","vars", "parent", "parent_type","verbs","ckey","key","x","y","z","contents", "luminosity", "group")))
							X.vars[V] = T.vars[V]

//					var/area/AR = X.loc

//					if(AR.lighting_use_dynamic)
//						X.opacity = !X.opacity
//						X.sd_set_opacity(!X.opacity)			//TODO: rewrite this code so it's not messed by lighting ~Carn

					toupdate += X

					refined_src -= T
					refined_trg -= B
					continue moving



	if(toupdate.len)
		for(var/turf/simulated/T1 in toupdate)
			T1.CalculateAdjacentTurfs()
			air_master.add_to_active(T1,1)


	return copiedobjs



proc/get_cardinal_dir(atom/A, atom/B)
	var/dx = abs(B.x - A.x)
	var/dy = abs(B.y - A.y)
	return get_dir(A, B) & (rand() * (dx+dy) < dy ? 3 : 12)

//chances are 1:value. anyprob(1) will always return true
proc/anyprob(value)
	return (rand(1,value)==value)

proc/view_or_range(distance = world.view , center = usr , type)
	switch(type)
		if("view")
			. = view(distance,center)
		if("range")
			. = range(distance,center)
	return

proc/oview_or_orange(distance = world.view , center = usr , type)
	switch(type)
		if("view")
			. = oview(distance,center)
		if("range")
			. = orange(distance,center)
	return

proc/get_mob_with_client_list()
	var/list/mobs = list()
	for(var/mob/M in mob_list)
		if(M.client)
			mobs += M
	return mobs


/proc/parse_zone(zone)
	if(zone == "r_hand") return "right hand"
	else if(zone == "l_hand") return "left hand"
	else if(zone == "l_arm") return "left arm"
	else if(zone == "r_arm") return "right arm"
	else if(zone == "l_leg") return "left leg"
	else if(zone == "r_leg") return "right leg"
	else if(zone == "l_foot") return "left foot"
	else if(zone == "r_foot") return "right foot"
	else if(zone == "l_hand") return "left hand"
	else if(zone == "r_hand") return "right hand"
	else if(zone == "l_foot") return "left foot"
	else if(zone == "r_foot") return "right foot"
	else return zone

//Finds the distance between two atoms, in pixels
//centered = 0 counts from turf edge to edge
//centered = 1 counts from turf center to turf center
//of course mathematically this is just adding world.icon_size on again
/proc/getPixelDistance(var/atom/A, var/atom/B, var/centered = 1)
	if(!istype(A)||!istype(B))
		return 0
	. = bounds_dist(A, B) + sqrt((((A.pixel_x+B.pixel_x)**2) + ((A.pixel_y+B.pixel_y)**2)))
	if(centered)
		. += world.icon_size

/proc/get(atom/loc, type)
	while(loc)
		if(istype(loc, type))
			return loc
		loc = loc.loc
	return null

/proc/get_turf_or_move(turf/location)
	return get_turf(location)


//Quick type checks for some tools
var/global/list/common_tools = list(
/obj/item/stack/cable_coil,
/obj/item/weapon/wrench,
/obj/item/weapon/weldingtool,
/obj/item/weapon/screwdriver,
/obj/item/weapon/wirecutters,
/obj/item/device/multitool,
/obj/item/weapon/crowbar)

/proc/istool(O)
	if(O && is_type_in_list(O, common_tools))
		return 1
	return 0

/proc/iswrench(O)
	if(istype(O, /obj/item/weapon/wrench))
		return 1
	return 0

/proc/iswelder(O)
	if(istype(O, /obj/item/weapon/weldingtool))
		return 1
	return 0

/proc/iscoil(O)
	if(istype(O, /obj/item/stack/cable_coil))
		return 1
	return 0

/proc/iswirecutter(O)
	if(istype(O, /obj/item/weapon/wirecutters))
		return 1
	return 0

/proc/isscrewdriver(O)
	if(istype(O, /obj/item/weapon/screwdriver))
		return 1
	return 0

/proc/ismultitool(O)
	if(istype(O, /obj/item/device/multitool))
		return 1
	return 0

/proc/iscrowbar(O)
	if(istype(O, /obj/item/weapon/crowbar))
		return 1
	return 0

/proc/iswire(O)
	if(istype(O, /obj/item/stack/cable_coil))
		return 1
	return 0

/proc/is_hot(obj/item/W as obj)
	if(istype(W, /obj/item/weapon/weldingtool))
		var/obj/item/weapon/weldingtool/O = W
		if(O.isOn())
			return 3800
		else
			return 0
	if(istype(W, /obj/item/weapon/lighter))
		var/obj/item/weapon/lighter/O = W
		if(O.lit)
			return 1500
		else
			return 0
	if(istype(W, /obj/item/weapon/match))
		var/obj/item/weapon/match/O = W
		if(O.lit == 1)
			return 1000
		else
			return 0
	if(istype(W, /obj/item/clothing/mask/cigarette))
		var/obj/item/clothing/mask/cigarette/O = W
		if(O.lit)
			return 1000
		else
			return 0
	if(istype(W, /obj/item/candle))
		var/obj/item/candle/O = W
		if(O.lit)
			return 1000
		else
			return 0
	if(istype(W, /obj/item/device/flashlight/flare))
		var/obj/item/device/flashlight/flare/O = W
		if(O.on)
			return 1000
		else
			return 0
	if(istype(W, /obj/item/weapon/gun/energy/plasmacutter))
		return 3800
	if(istype(W, /obj/item/weapon/melee/energy))
		var/obj/item/weapon/melee/energy/O = W
		if(O.active)
			return 3500
		else
			return 0
	if(istype(W, /obj/item/device/assembly/igniter))
		return 1000
	else
		return 0

//Whether or not the given item counts as sharp in terms of dealing damage
/proc/is_sharp(obj/O as obj)
	if(!O) return 0
	if(O.sharp) return 1
	if(O.edge) return 1
	return 0

//Whether or not the given item counts as cutting with an edge in terms of removing limbs
/proc/has_edge(obj/O as obj)
	if(!O) return 0
	if(O.edge) return 1
	return 0

//Returns 1 if the given item is capable of popping things like balloons, inflatable barriers, or cutting police tape.
/proc/can_puncture(obj/item/W as obj)		// For the record, WHAT THE HELL IS THIS METHOD OF DOING IT?
	if(!istype(W)) return 0
	if(!W) return 0
	if(W.sharp) return 1
	return ( \
		W.sharp													  || \
		istype(W, /obj/item/weapon/screwdriver)                   || \
		istype(W, /obj/item/weapon/pen)                           || \
		istype(W, /obj/item/weapon/weldingtool)					  || \
		istype(W, /obj/item/weapon/lighter/zippo)				  || \
		istype(W, /obj/item/weapon/match)            		      || \
		istype(W, /obj/item/clothing/mask/cigarette) 		      || \
		istype(W, /obj/item/weapon/shovel) \
	)

/proc/is_surgery_tool(obj/item/W as obj)
	return (	\
	istype(W, /obj/item/weapon/scalpel)			||	\
	istype(W, /obj/item/weapon/hemostat)		||	\
	istype(W, /obj/item/weapon/retractor)		||	\
	istype(W, /obj/item/weapon/cautery)			||	\
	istype(W, /obj/item/weapon/bonegel)			||	\
	istype(W, /obj/item/weapon/bonesetter)
	)

//check if mob is lying down on something we can operate him on.
/proc/can_operate(mob/living/carbon/M)
	return (locate(/obj/machinery/optable, M.loc) && M.resting) || \
	(locate(/obj/structure/stool/bed/roller, M.loc) && 	\
	(M.buckled || M.lying || M.weakened || M.stunned || M.paralysis || M.sleeping || M.stat)) && prob(75) || 	\
	(locate(/obj/structure/table/, M.loc) && 	\
	(M.lying || M.weakened || M.stunned || M.paralysis || M.sleeping || M.stat) && prob(66))

/proc/reverse_direction(var/dir)
	switch(dir)
		if(NORTH)
			return SOUTH
		if(NORTHEAST)
			return SOUTHWEST
		if(EAST)
			return WEST
		if(SOUTHEAST)
			return NORTHWEST
		if(SOUTH)
			return NORTH
		if(SOUTHWEST)
			return NORTHEAST
		if(WEST)
			return EAST
		if(NORTHWEST)
			return SOUTHEAST

/*
Checks if that loc and dir has a item on the wall
*/
var/list/WALLITEMS = list(
	"/obj/machinery/power/apc", "/obj/machinery/alarm", "/obj/item/device/radio/intercom",
	"/obj/structure/extinguisher_cabinet", "/obj/structure/reagent_dispensers/peppertank",
	"/obj/machinery/status_display", "/obj/machinery/requests_console", "/obj/machinery/light_switch", "/obj/effect/sign",
	"/obj/machinery/newscaster", "/obj/machinery/firealarm", "/obj/structure/noticeboard", "/obj/machinery/door_control",
	"/obj/machinery/computer/security/telescreen", "/obj/machinery/embedded_controller/radio/simple_vent_controller",
	"/obj/item/weapon/storage/secure/safe", "/obj/machinery/door_timer", "/obj/machinery/flasher", "/obj/machinery/keycard_auth",
	"/obj/structure/mirror", "/obj/structure/closet/fireaxecabinet", "/obj/machinery/computer/security/telescreen/entertainment",
	"/obj/structure/sign"
	)
/proc/gotwallitem(loc, dir)
	for(var/obj/O in loc)
		for(var/item in WALLITEMS)
			if(istype(O, text2path(item)))
				//Direction works sometimes
				if(O.dir == dir)
					return 1

				//Some stuff doesn't use dir properly, so we need to check pixel instead
				switch(dir)
					if(SOUTH)
						if(O.pixel_y > 10)
							return 1
					if(NORTH)
						if(O.pixel_y < -10)
							return 1
					if(WEST)
						if(O.pixel_x > 10)
							return 1
					if(EAST)
						if(O.pixel_x < -10)
							return 1


	//Some stuff is placed directly on the wallturf (signs)
	for(var/obj/O in get_step(loc, dir))
		for(var/item in WALLITEMS)
			if(istype(O, text2path(item)))
				if(abs(O.pixel_x) <= 10 && abs(O.pixel_y) <= 10)
					return 1
	return 0


proc/get_angle(atom/a, atom/b)
		return atan2(b.y - a.y, b.x - a.x)

proc/atan2(x, y)
	if(!x && !y) return 0
	return y >= 0 ? arccos(x / sqrt(x * x + y * y)) : -arccos(x / sqrt(x * x + y * y))

proc/rotate_icon(file, state, step = 1, aa = FALSE)
	var icon/base = icon(file, state)

	var w, h, w2, h2

	if(aa)
		aa++
		w = base.Width()
		w2 = w * aa
		h = base.Height()
		h2 = h * aa

	var icon{result = icon(base); temp}

	for(var/angle in 0 to 360 step step)
		if(angle == 0  ) continue
		if(angle == 360)   continue
		temp = icon(base)
		if(aa) temp.Scale(w2, h2)
		temp.Turn(angle)
		if(aa) temp.Scale(w,   h)
		result.Insert(temp, "[angle]")

	return result

/proc/format_text(text)
	return replacetext(replacetext(text,"\proper ",""),"\improper ","")

/*
Standard way to write links -Sayu
*/

/proc/topic_link(var/datum/D, var/arglist, var/content)
	if(istype(arglist,/list))
		arglist = list2params(arglist)
	return "<a href='?src=\ref[D];[arglist]'>[content]</a>"



/proc/get_location_accessible(mob/M, location)
	var/covered_locations	= 0	//based on body_parts_covered
	var/face_covered		= 0	//based on flags_inv
	var/eyesmouth_covered	= 0	//based on flags
	if(iscarbon(M))
		var/mob/living/carbon/C = M
		for(var/obj/item/clothing/I in list(C.back, C.wear_mask))
			covered_locations |= I.body_parts_covered
			face_covered |= I.flags_inv
			eyesmouth_covered |= I.flags
		if(ishuman(C))
			var/mob/living/carbon/human/H = C
			for(var/obj/item/I in list(H.wear_suit, H.w_uniform, H.shoes, H.belt, H.gloves, H.glasses, H.head, H.r_ear, H.l_ear))
				covered_locations |= I.body_parts_covered
				face_covered |= I.flags_inv
				eyesmouth_covered |= I.flags

	switch(location)
		if("head")
			if(covered_locations & HEAD)
				return 0
		if("eyes")
			if(covered_locations & HEAD || face_covered & HIDEEYES || eyesmouth_covered & GLASSESCOVERSEYES)
				return 0
		if("mouth")
			if(covered_locations & HEAD || face_covered & HIDEFACE || eyesmouth_covered & MASKCOVERSMOUTH)
				return 0
		if("chest")
			if(covered_locations & UPPER_TORSO)
				return 0
		if("groin")
			if(covered_locations & LOWER_TORSO)
				return 0
		if("l_arm")
			if(covered_locations & ARM_LEFT)
				return 0
		if("r_arm")
			if(covered_locations & ARM_RIGHT)
				return 0
		if("l_leg")
			if(covered_locations & LEG_LEFT)
				return 0
		if("r_leg")
			if(covered_locations & LEG_RIGHT)
				return 0
		if("l_hand")
			if(covered_locations & HAND_LEFT)
				return 0
		if("r_hand")
			if(covered_locations & HAND_RIGHT)
				return 0
		if("l_foot")
			if(covered_locations & FOOT_LEFT)
				return 0
		if("r_foot")
			if(covered_locations & FOOT_RIGHT)
				return 0

	return 1

proc/check_target_facings(mob/living/initator, mob/living/target)
	/*This can be used to add additional effects on interactions between mobs depending on how the mobs are facing each other, such as adding a crit damage to blows to the back of a guy's head.
	Given how click code currently works (Nov '13), the initiating mob will be facing the target mob most of the time
	That said, this proc should not be used if the change facing proc of the click code is overriden at the same time*/
	if(!!isliving(target) || target.lying || istype(target, /mob/living/silicon/pai))
	//Make sure we are not doing this for things that can't have a logical direction to the players given that the target would be on their side
		return

	if(initator.dir == target.dir) //mobs are facing the same direction
		return 1
	if(initator.dir + 4 == target.dir || initator.dir - 4 == target.dir) //mobs are facing each other
		return 2
	if(initator.dir + 2 == target.dir || initator.dir - 2 == target.dir || initator.dir + 6 == target.dir || initator.dir - 6 == target.dir) //Initating mob is looking at the target, while the target mob is looking in a direction perpendicular to the 1st
		return 3


atom/proc/GetTypeInAllContents(typepath)
	var/list/processing_list = list(src)
	var/list/processed = list()

	var/atom/found = null

	while(processing_list.len && found==null)
		var/atom/A = processing_list[1]
		if(istype(A, typepath))
			found = A

		processing_list -= A

		for(var/atom/a in A)
			if(!(a in processed))
				processing_list |= a

		processed |= A

	return found

/proc/random_step(atom/movable/AM, steps, chance)
	var/initial_chance = chance
	while(steps > 0)
		if(prob(chance))
			step(AM, pick(alldirs))
		chance = max(chance - (initial_chance / steps), 0)
		steps--

/proc/get_random_colour(var/simple, var/lower, var/upper)
	var/colour
	if(simple)
		colour = pick(list("FF0000","FF7F00","FFFF00","00FF00","0000FF","4B0082","8F00FF"))
	else
		for(var/i=1;i<=3;i++)
			var/temp_col = "[num2hex(rand(lower,upper))]"
			if(length(temp_col )<2)
				temp_col  = "0[temp_col]"
			colour += temp_col
	return colour

/proc/get_random_chemical(var/is_plant = 0)
	var/list/blocked = blocked_chems.Copy()		//blocked_chems list is found in code/_globalvars/lists/reagents.dm
	if(is_plant)
		blocked.Add(plant_blocked_chems.Copy())	//plant_blocked_chems list is found in code/_globalvars/lists/reagents.dm
	var/picked_chem = pick(chemical_reagents_list)
	if(blocked.Find(picked_chem))
		return get_random_chemical(is_plant)
	return picked_chem

/proc/get_distant_turf(var/turf/T,var/direction,var/distance)
	if(!T || !direction || !distance)	return

	var/dest_x = T.x
	var/dest_y = T.y
	var/dest_z = T.z

	if(direction & NORTH)
		dest_y = min(world.maxy, dest_y+distance)
	if(direction & SOUTH)
		dest_y = max(0, dest_y-distance)
	if(direction & EAST)
		dest_x = min(world.maxy, dest_x+distance)
	if(direction & WEST)
		dest_x = max(0, dest_x-distance)

	return locate(dest_x,dest_y,dest_z)

var/mob/dview/dview_mob = new

//Version of view() which ignores darkness, because BYOND doesn't have it.
/proc/dview(var/range = world.view, var/center, var/invis_flags = 0)
	if(!center)
		return

	dview_mob.loc = center

	dview_mob.see_invisible = invis_flags

	. = view(range, dview_mob)
	dview_mob.loc = null

/mob/dview
	invisibility = 101
	density = 0

	anchored = 1
	simulated = 0

	see_in_dark = 1e6

/mob/dview/New() //For whatever reason, if this isn't called, then BYOND will throw a type mismatch runtime when attempting to add this to the mobs list. -Fox

/proc/IsValidSrc(var/A)
	if(istype(A, /datum))
		var/datum/B = A
		return isnull(B.gcDestroyed)
	if(istype(A, /client))
		return 1
	return 0

//This is just so you can stop an orbit.
//orbit() can run without it (swap orbiting for A)
//but then you can never stop it and that's just silly.
/atom/movable/var/atom/orbiting = null

//A: atom to orbit
//radius: range to orbit at, radius of the circle formed by orbiting
//clockwise: whether you orbit clockwise or anti clockwise
//rotation_speed: how fast to rotate
//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
//lockinorbit: Forces src to always be on A's turf, otherwise the orbit cancels when src gets too far away (eg: ghosts)

/atom/movable/proc/orbit(atom/A, radius = 10, clockwise = FALSE, rotation_speed = 20, rotation_segments = 36, pre_rotation = TRUE, lockinorbit = FALSE)
	if(!istype(A))
		return

	if(orbiting)
		stop_orbit()

	orbiting = A
	var/matrix/initial_transform = matrix(transform)
	var/lastloc = loc

	//Head first!
	if(pre_rotation)
		var/matrix/M = matrix(transform)
		var/pre_rot = 90
		if(!clockwise)
			pre_rot = -90
		M.Turn(pre_rot)
		transform = M

	var/matrix/shift = matrix(transform)
	shift.Translate(0,radius)
	transform = shift

	SpinAnimation(rotation_speed, -1, clockwise, rotation_segments)

	//we stack the orbits up client side, so we can assign this back to normal server side without it breaking the orbit
	transform = initial_transform
	while(orbiting && orbiting == A && A.loc)
		var/targetloc = get_turf(A)
		if(!lockinorbit && loc != lastloc && loc != targetloc)
			break
		loc = targetloc
		lastloc = loc
		sleep(0.6)

	if(orbiting == A) //make sure we haven't started orbiting something else.
		orbiting = null
		SpinAnimation(0,0)



/atom/movable/proc/stop_orbit()
	orbiting = null

//Centers an image.
//Requires:
//The Image
//The x dimension of the icon file used in the image
//The y dimension of the icon file used in the image
// eg: center_image(I, 32,32)
// eg2: center_image(I, 96,96)
/proc/center_image(var/image/I, x_dimension = 0, y_dimension = 0)
	if(!I)
		return

	if(!x_dimension || !y_dimension)
		return

	//Get out of here, punk ass kids calling procs needlessly
	if((x_dimension == world.icon_size) && (y_dimension == world.icon_size))
		return I

	//Offset the image so that it's bottom left corner is shifted this many pixels
	//This makes it infinitely easier to draw larger inhands/images larger than world.iconsize
	//but still use them in game
	var/x_offset = -((x_dimension/world.icon_size)-1)*(world.icon_size*0.5)
	var/y_offset = -((y_dimension/world.icon_size)-1)*(world.icon_size*0.5)

	//Correct values under world.icon_size
	if(x_dimension < world.icon_size)
		x_offset *= -1
	if(y_dimension < world.icon_size)
		y_offset *= -1

	I.pixel_x = x_offset
	I.pixel_y = y_offset

	return I

//similar function to RANGE_TURFS(), but will search spiralling outwards from the center (like the above, but only turfs)
/proc/spiral_range_turfs(dist=0, center=usr, orange=0)
	if(!dist)
		if(!orange)
			return list(center)
		else
			return list()

	var/turf/t_center = get_turf(center)
	if(!t_center)
		return list()

	var/list/L = list()
	var/turf/T
	var/y
	var/x
	var/c_dist = 1

	if(!orange)
		L += t_center

	while( c_dist <= dist )
		y = t_center.y + c_dist
		x = t_center.x - c_dist + 1
		for(x in x to t_center.x+c_dist)
			T = locate(x,y,t_center.z)
			if(T)
				L += T

		y = t_center.y + c_dist - 1
		x = t_center.x + c_dist
		for(y in t_center.y-c_dist to y)
			T = locate(x,y,t_center.z)
			if(T)
				L += T

		y = t_center.y - c_dist
		x = t_center.x + c_dist - 1
		for(x in t_center.x-c_dist to x)
			T = locate(x,y,t_center.z)
			if(T)
				L += T

		y = t_center.y - c_dist + 1
		x = t_center.x - c_dist
		for(y in y to t_center.y+c_dist)
			T = locate(x,y,t_center.z)
			if(T)
				L += T
		c_dist++

	return L

//ultra range (no limitations on distance, faster than range for distances > 8); including areas drastically decreases performance
/proc/urange(dist=0, atom/center=usr, orange=0, areas=0)
	if(!dist)
		if(!orange)
			return list(center)
		else
			return list()

	var/list/turfs = RANGE_TURFS(dist, center)
	if(orange)
		turfs -= get_turf(center)
	. = list()
	for(var/V in turfs)
		var/turf/T = V
		. += T
		. += T.contents
		if(areas)
			. |= T.loc

/proc/turf_clear(turf/T)
	for(var/atom/A in T)
		if(A.simulated)
			return 0
	return 1

/proc/screen_loc2turf(scr_loc, turf/origin)
	var/tX = splittext(scr_loc, ",")
	var/tY = splittext(tX[2], ":")
	var/tZ = origin.z
	tY = tY[1]
	tX = splittext(tX[1], ":")
	tX = tX[1]
	tX = max(1, min(world.maxx, origin.x + (text2num(tX) - (world.view + 1))))
	tY = max(1, min(world.maxy, origin.y + (text2num(tY) - (world.view + 1))))
	return locate(tX, tY, tZ)

/proc/get_closest_atom(type, list, source)
	var/closest_atom
	var/closest_distance
	for(var/A in list)
		if(!istype(A, type))
			continue
		var/distance = get_dist(source, A)
		if(!closest_distance)
			closest_distance = distance
			closest_atom = A
		else
			if(closest_distance > distance)
				closest_distance = distance
				closest_atom = A
	return closest_atom

/proc/pick_closest_path(value)
	var/list/matches = get_fancy_list_of_types()
	if(!isnull(value) && value!="")
		matches = filter_fancy_list(matches, value)

	if(matches.len==0)
		return

	var/chosen
	if(matches.len==1)
		chosen = matches[1]
	else
		chosen = input("Select an atom type", "Spawn Atom", matches[1]) as null|anything in matches
		if(!chosen)
			return
	chosen = matches[chosen]
	return chosen


var/list/TYPES_SHORTCUTS = list(
	/obj/effect/decal/cleanable = "CLEANABLE",
	/obj/item/device/radio/headset = "HEADSET",
	/obj/item/clothing/head/helmet/space = "SPESSHELMET",
	/obj/item/weapon/book/manual = "MANUAL",
	/obj/item/weapon/reagent_containers/food/drinks = "DRINK", //longest paths comes first
	/obj/item/weapon/reagent_containers/food = "FOOD",
	/obj/item/weapon/reagent_containers = "REAGENT_CONTAINERS",
	/obj/machinery/atmospherics = "ATMOS",
	/obj/machinery/portable_atmospherics = "PORT_ATMOS",
//	/obj/item/mecha_parts/mecha_equipment/weapon/ballistic/launcher/missile_rack = "MECHA_MISSILE_RACK",
	/obj/item/mecha_parts/mecha_equipment = "MECHA_EQUIP",
//	/obj/item/organ/internal = "ORGAN_INT",
)

var/global/list/g_fancy_list_of_types = null
/proc/get_fancy_list_of_types()
	if(isnull(g_fancy_list_of_types)) //init
		var/list/temp = sortList(subtypesof(/atom) - typesof(/area) - /atom/movable)
		g_fancy_list_of_types = new(temp.len)
		for(var/type in temp)
			var/typename = "[type]"
			for(var/tn in TYPES_SHORTCUTS)
				if(copytext(typename,1, length("[tn]/")+1)=="[tn]/" /*findtextEx(typename,"[tn]/",1,2)*/ )
					typename = TYPES_SHORTCUTS[tn]+copytext(typename,length("[tn]/"))
					break
			g_fancy_list_of_types[typename] = type
	return g_fancy_list_of_types

/proc/filter_fancy_list(list/L, filter as text)
	var/list/matches = new
	for(var/key in L)
		var/value = L[key]
		if(findtext("[key]", filter) || findtext("[value]", filter))
			matches[key] = value
	return matches

//Key thing that stops lag. Cornerstone of performance in ss13, Just sitting here, in unsorted.dm.
/proc/stoplag()
	. = 1
	sleep(world.tick_lag)
	if(world.tick_usage > TICK_LIMIT_TO_RUN) //woke up, still not enough tick, sleep for more.
		. += 2
		sleep(world.tick_lag*2)
		if(world.tick_usage > TICK_LIMIT_TO_RUN) //woke up, STILL not enough tick, sleep for more.
			. += 4
			sleep(world.tick_lag*4)
			//you might be thinking of adding more steps to this, or making it use a loop and a counter var
			//	not worth it.