vgstation13/code/defines/atom.dm

/atom
	layer = 2
	var/level = 2
	var/flags = FPRINT
	var/list/fingerprints
	var/list/fingerprintshidden
	var/fingerprintslast = null
	var/list/blood_DNA
	var/last_bumped = 0
	var/pass_flags = 0

	///Chemistry.
	var/datum/reagents/reagents = null

	//var/chem_is_open_container = 0
	// replaced by OPENCONTAINER flags and atom/proc/is_open_container()
	///Chemistry.

	//Detective Work, used for the duplicate data points kept in the scanners
	var/list/original_atom

	proc/assume_air(datum/air_group/giver)
		del(giver)
		return null

	proc/remove_air(amount)
		return null

	proc/return_air()
		if(loc)
			return loc.return_air()
		else
			return null



// Convenience proc to see if a container is open for chemistry handling
// returns true if open
// false if closed
	proc/is_open_container()
		return flags & OPENCONTAINER

/*//Convenience proc to see whether a container can be accessed in a certain way.

	proc/can_subract_container()
		return flags & EXTRACT_CONTAINER

	proc/can_add_container()
		return flags & INSERT_CONTAINER
*/

obj
	assume_air(datum/air_group/giver)
		if(loc)
			return loc.assume_air(giver)
		else
			return null

	remove_air(amount)
		if(loc)
			return loc.remove_air(amount)
		else
			return null

	return_air()
		if(loc)
			return loc.return_air()
		else
			return null

/atom/proc/meteorhit(obj/effect/meteor as obj)
	return

/atom/proc/allow_drop()
	return 1

/atom/proc/CheckExit()
	return 1

/atom/proc/HasEntered(atom/movable/AM as mob|obj)
	return

/atom/proc/HasProximity(atom/movable/AM as mob|obj)
	return

/atom/proc/emp_act(var/severity)
	return

/atom/proc/bullet_act(var/obj/item/projectile/Proj)
	return 0

/atom/proc/in_contents_of(container)//can take class or object instance as argument
	if(ispath(container))
		if(istype(src.loc, container))
			return 1
	else if(src in container)
		return 1
	return

/*
 *	atom/proc/search_contents_for(path,list/filter_path=null)
 * Recursevly searches all atom contens (including contents contents and so on).
 *
 * ARGS: path - search atom contents for atoms of this type
 *       list/filter_path - if set, contents of atoms not of types in this list are excluded from search.
 *
 * RETURNS: list of found atoms
 */

/atom/proc/search_contents_for(path,list/filter_path=null)
	var/list/found = list()
	for(var/atom/A in src)
		if(istype(A, path))
			found += A
		if(filter_path)
			var/pass = 0
			for(var/type in filter_path)
				pass |= istype(A, type)
			if(!pass)
				continue
		if(A.contents.len)
			found += A.search_contents_for(path,filter_path)
	return found

/atom/movable/overlay/attackby(a, b)
	if (src.master)
		return src.master.attackby(a, b)
	return

/atom/movable/overlay/attack_paw(a, b, c)
	if (src.master)
		return src.master.attack_paw(a, b, c)
	return

/atom/movable/overlay/attack_hand(a, b, c)
	if (src.master)
		return src.master.attack_hand(a, b, c)
	return

/atom/movable/overlay/New()
	for(var/x in src.verbs)
		src.verbs -= x
	return


/atom/movable
	layer = 3
	var/last_move = null
	var/anchored = 0
	// var/elevation = 2    - not used anywhere
	var/move_speed = 10
	var/l_move_time = 1
	var/m_flag = 1
	var/throwing = 0
	var/throw_speed = 2
	var/throw_range = 7
	var/moved_recently = 0

/atom/movable/overlay
	var/atom/master = null
	anchored = 1

/atom/movable/Move()
	var/atom/A = src.loc
	. = ..()
	src.move_speed = world.timeofday - src.l_move_time
	src.l_move_time = world.timeofday
	src.m_flag = 1
	if ((A != src.loc && A && A.z == src.z))
		src.last_move = get_dir(A, src.loc)
	return

/*
Beam code by Gunbuddy

Beam() proc will only allow one beam to come from a source at a time.  Attempting to call it more than
once at a time per source will cause graphical errors.
Also, the icon used for the beam will have to be vertical and 32x32.
The math involved assumes that the icon is vertical to begin with so unless you want to adjust the math,
its easier to just keep the beam vertical.
*/
/atom/proc/Beam(atom/BeamTarget,icon_state="b_beam",icon='icons/effects/beam.dmi',time=50, maxdistance=10)
	//BeamTarget represents the target for the beam, basically just means the other end.
	//Time is the duration to draw the beam
	//Icon is obviously which icon to use for the beam, default is beam.dmi
	//Icon_state is what icon state is used. Default is b_beam which is a blue beam.
	//Maxdistance is the longest range the beam will persist before it gives up.
	var/EndTime=world.time+time
	while(BeamTarget&&world.time<EndTime&&get_dist(src,BeamTarget)<maxdistance&&z==BeamTarget.z)
	//If the BeamTarget gets deleted, the time expires, or the BeamTarget gets out
	//of range or to another z-level, then the beam will stop.  Otherwise it will
	//continue to draw.

		dir=get_dir(src,BeamTarget)	//Causes the source of the beam to rotate to continuosly face the BeamTarget.

		for(var/obj/effect/overlay/beam/O in orange(10,src))	//This section erases the previously drawn beam because I found it was easier to
			if(O.BeamSource==src)				//just draw another instance of the beam instead of trying to manipulate all the
				del O							//pieces to a new orientation.
		var/Angle=round(Get_Angle(src,BeamTarget))
		var/icon/I=new(icon,icon_state)
		I.Turn(Angle)
		var/DX=(32*BeamTarget.x+BeamTarget.pixel_x)-(32*x+pixel_x)
		var/DY=(32*BeamTarget.y+BeamTarget.pixel_y)-(32*y+pixel_y)
		var/N=0
		var/length=round(sqrt((DX)**2+(DY)**2))
		for(N,N<length,N+=32)
			var/obj/effect/overlay/beam/X=new(loc)
			X.BeamSource=src
			if(N+32>length)
				var/icon/II=new(icon,icon_state)
				II.DrawBox(null,1,(length-N),32,32)
				II.Turn(Angle)
				X.icon=II
			else X.icon=I
			var/Pixel_x=round(sin(Angle)+32*sin(Angle)*(N+16)/32)
			var/Pixel_y=round(cos(Angle)+32*cos(Angle)*(N+16)/32)
			if(DX==0) Pixel_x=0
			if(DY==0) Pixel_y=0
			if(Pixel_x>32)
				for(var/a=0, a<=Pixel_x,a+=32)
					X.x++
					Pixel_x-=32
			if(Pixel_x<-32)
				for(var/a=0, a>=Pixel_x,a-=32)
					X.x--
					Pixel_x+=32
			if(Pixel_y>32)
				for(var/a=0, a<=Pixel_y,a+=32)
					X.y++
					Pixel_y-=32
			if(Pixel_y<-32)
				for(var/a=0, a>=Pixel_y,a-=32)
					X.y--
					Pixel_y+=32
			X.pixel_x=Pixel_x
			X.pixel_y=Pixel_y
		sleep(3)	//Changing this to a lower value will cause the beam to follow more smoothly with movement, but it will also be more laggy.
					//I've found that 3 ticks provided a nice balance for my use.
	for(var/obj/effect/overlay/beam/O in orange(10,src)) if(O.BeamSource==src) del O

atom/movable/proc/forceMove(atom/destination)
	if(destination)
		if(loc)
			loc.Exited(src)
		loc = destination
		loc.Entered(src)
		return 1
	return 0