//like orange but only checks north/south/east/west for one step
proc/cardinalrange(var/center)
	var/list/things = list()
	for(var/direction in cardinal)
		var/turf/T = get_step(center, direction)
		if(!T)
			continue
		things += T.contents
	return things

/obj/machinery/am_shielding
	name = "antimatter reactor section"
	desc = "This device was built using a plasma life-form that increases plasma's natural ability to react with neutrinos while reducing the combustibility."

	icon = 'icons/obj/machines/new_ame.dmi'
	icon_state = "part"
	anchored = 1
	density = 1
	dir = 1
	use_power = 0//Living things generally dont use power
	idle_power_usage = 0
	active_power_usage = 0
	mech_flags = MECH_SCAN_FAIL

	light_color = "#00FFFF"

	var/obj/machinery/power/am_control_unit/control_unit = null
	var/processing = 0//To track if we are in the update list or not, we need to be when we are damaged and if we ever
	var/stability = 100//If this gets low bad things tend to happen
	var/efficiency = 1//How many cores this core counts for when doing power processing, plasma in the air and stability could affect this
	var/coredirs = 0
	var/dirs = 0
	var/mapped = 0 //Set to 1 to ignore usual suicide if it doesn't immediately find a control_unit
	var/getting_blobbed = 0

	lighting_flags = IS_LIGHT_SOURCE
	light_power = 0
	light_range = 1
	light_color = LIGHT_COLOR_HALOGEN
	light_type = LIGHT_SOFT_FLICKER

// Stupidly easy way to use it in maps
/obj/machinery/am_shielding/map
	mapped = 1

/obj/machinery/am_shielding/New(loc, var/obj/machinery/power/am_control_unit/AMC)
	..()
	if(!AMC)
		if (!mapped)
			WARNING("AME sector somehow created without a parent control unit!")
		controllerscan()
		return
	link_control(AMC)
	machines -= src
	power_machines += src
	update_icon()
	playsound(src, 'sound/effects/sparks4.ogg', 30, 0, 0)
	anim(target = loc, a_icon = icon, flick_anim = "deploy", lay = ABOVE_LIGHTING_LAYER, plane = ABOVE_LIGHTING_PLANE)
	spawn(3) // delay for nicer animation
		for (var/direction in alldirs)
			var/turf/T = get_step(loc, direction)
			for (var/obj/machinery/am_shielding/AMS in T)
				var/old_state = AMS.icon_state
				AMS.update_icon()
				if (old_state != AMS.icon_state)
					playsound(T, 'sound/effects/sparks1.ogg', 25, 0, 0)
					anim(target = T, a_icon = icon, flick_anim = "change", lay = ABOVE_LIGHTING_LAYER, plane = ABOVE_LIGHTING_PLANE)
					sleep(1)

/obj/machinery/am_shielding/proc/link_control(var/obj/machinery/power/am_control_unit/AMC)
	if(!istype(AMC))
		return 0
	if(control_unit && control_unit != AMC)
		return 0//Already have one
	control_unit = AMC
	return control_unit.add_shielding(src,1)

/obj/machinery/am_shielding/Destroy()
	if(control_unit)
		control_unit.remove_shielding(src)
	if(processing)
		shutdown_core()
	visible_message("<span class='warning'>The [src.name] melts!</span>")
	power_machines -= src
	//Might want to have it leave a mess on the floor but no sprites for now
	..()

/obj/machinery/am_shielding/proc/controllerscan(var/priorscan = 0)
	//Make sure we are the only one here
	if(!istype(src.loc, /turf))
		qdel(src)
		return
	for(var/obj/machinery/am_shielding/AMS in loc.contents)
		if(AMS == src)
			continue
		qdel(src)
		return

	//Search for shielding first
	for(var/obj/machinery/am_shielding/AMS in cardinalrange(src))
		if(AMS && AMS.control_unit && link_control(AMS.control_unit))
			break

	if(!control_unit)//No other guys nearby, look for a control unit
		for(var/obj/machinery/power/am_control_unit/AMC in cardinalrange(src))
			if(AMC.add_shielding(src))
				break
		if(!mapped) // Prevent suicide if it's part of the map
			if(!priorscan)
				sleep(20)
				controllerscan(1)//Last chance
				return
			qdel(src)
		else
			if(!priorscan)
				sleep(20)
				controllerscan(1)
				return

// Find surrounding unconnected shielding and add them to our controller
/obj/machinery/am_shielding/proc/assimilate()
	if(!control_unit)
		return // nothing to share :'^(
	for(var/obj/machinery/am_shielding/neighbor in cardinalrange(src))
		if(neighbor && !neighbor.control_unit)
			neighbor.link_control(control_unit)
			neighbor.assimilate() // recursion is fun, right?

/obj/machinery/am_shielding/Cross(atom/movable/mover, turf/target, height=1.5, air_group = 0)
	if(air_group || (height==0))
		return 1
	return 0


/obj/machinery/am_shielding/process()
	if(!processing)
		. = PROCESS_KILL
	//TODO: core functions and stability
	//TODO: think about checking the airmix for plasma and increasing power output


/obj/machinery/am_shielding/emp_act()//Immune due to not really much in the way of electronics.
	return 0


/obj/machinery/am_shielding/blob_act(var/override = 0)
	if (getting_blobbed)
		return
	stability -= 20
	if(prob(100-stability) || override)
		getting_blobbed = 1
		if(override == 2)
			new /obj/effect/blob/node(get_turf(src),"AME_new",1)
		else
			new /obj/effect/blob(get_turf(src),"AME_new",1)
		qdel(src)
		return
	check_stability()
	return


/obj/machinery/am_shielding/ex_act(severity)
	switch(severity)
		if(1.0)
			stability -= 80
		if(2.0)
			stability -= 40
		if(3.0)
			stability -= 20
	check_stability()


/obj/machinery/am_shielding/bullet_act(var/obj/item/projectile/Proj)
	if(Proj.flag != "bullet")
		stability -= Proj.force/2
	return ..()


/obj/machinery/am_shielding/update_icon()
	overlays.len = 0
	dirs = 0

	if(core_check())
		icon_state = "core[control_unit && control_unit.active]"
		if (control_unit && control_unit.active)
			var/image/I = image(icon = icon, icon_state = "core_overlay")
			I.plane = ABOVE_LIGHTING_PLANE
			I.layer = ABOVE_LIGHTING_LAYER
			overlays += I
			set_light(1.4,1)
		else
			kill_light()
		if(!processing)
			setup_core()
		return
	else if(processing)
		kill_light()
		shutdown_core()

	for(var/direction in alldirs)
		var/turf/T = get_step(loc, direction)
		for(var/obj/machinery/machine in T)
			// Detect cores, shielding, and control boxen.
			if(direction in cardinal)
				if((istype(machine, /obj/machinery/am_shielding) && machine:control_unit == control_unit) || (istype(machine, /obj/machinery/power/am_control_unit) && machine == control_unit))
					dirs |= direction

	if (control_unit && control_unit.active)
		set_light(1, 1)
	else
		kill_light()

	icon_state = "shield_[dirs]"



/obj/machinery/am_shielding/attackby(obj/item/W, mob/user)
	if(!istype(W) || !user)
		return
	if(W.force > 10)
		user.do_attack_animation(src, W)
		playsound(src, 'sound/items/metal_impact.ogg', 75, 1)
		shake(1, 3)
		user.delayNextAttack(8)
		visible_message("<span class='warning'>\The [user] hits \the [src] with \a [W]!</span>", \
					"<span class='warning'>You hit \the [src] with your [W]!</span>", \
					"You hear something metallic being hit.")
		stability -= W.force/2
		check_stability()
	..()
	return

//Scans cards for shields or the control unit and if all there it
/obj/machinery/am_shielding/proc/core_check()
	for(var/direction in alldirs)
		var/found_am_device=0
		for(var/obj/machinery/machine in get_step(loc, direction))
			if(!machine)
				continue
			if(istype(machine, /obj/machinery/am_shielding) || istype(machine, /obj/machinery/power/am_control_unit))
				found_am_device=1
				break
		if(!found_am_device)
			return 0
	return 1


/obj/machinery/am_shielding/proc/setup_core()
	processing = 1
	power_machines.Add(src)
	if(!control_unit)
		return
	control_unit.linked_cores.Add(src)
	control_unit.reported_core_efficiency += efficiency


/obj/machinery/am_shielding/proc/shutdown_core()
	processing = 0
	if(!control_unit)
		return
	control_unit.linked_cores.Remove(src)
	control_unit.reported_core_efficiency -= efficiency


/obj/machinery/am_shielding/proc/check_stability(var/injecting_fuel = 0)
	if(stability > 0)
		return
	if(injecting_fuel && control_unit)
		control_unit.exploding = 1
	qdel(src)

/obj/machinery/am_shielding/proc/recalc_efficiency(var/new_efficiency)//tbh still not 100% sure how I want to deal with efficiency so this is likely temp
	if(!control_unit || !processing)
		return
	if(stability < 50)
		new_efficiency /= 2
	control_unit.reported_core_efficiency += (new_efficiency - efficiency)
	efficiency = new_efficiency



/obj/item/device/am_shielding_container
	name = "packaged antimatter reactor section"
	desc = "A small storage unit containing an antimatter reactor section.  To use place near an antimatter control unit or deployed antimatter reactor section and use a multitool to activate this package."
	icon = 'icons/obj/machines/new_ame.dmi'
	icon_state = "part"
	item_state = "electronic"
	w_class = W_CLASS_LARGE
	flags = FPRINT
	siemens_coefficient = 1
	throwforce = 5
	throw_speed = 1
	throw_range = 5
	starting_materials = list(MAT_IRON = CC_PER_SHEET_METAL*2)
	w_type = RECYK_METAL

/obj/item/device/am_shielding_container/attackby(var/obj/item/I, var/mob/user)
	if(I.is_multitool(user) && isturf(loc))
		if(locate(/obj/machinery/am_shielding/) in loc)
			to_chat(user, "<span class='warning'>[bicon(src)]There is already an antimatter reactor section there.</span>")
			return

		//Search for shielding first
		for(var/obj/machinery/am_shielding/AMS in cardinalrange(src))
			if(AMS.control_unit)
				new/obj/machinery/am_shielding(src.loc, AMS.control_unit)
				qdel(src)
				return

		//No other guys nearby, look for a control unit
		var/obj/machinery/power/am_control_unit/AMC = locate() in cardinalrange(src)
		if(AMC && AMC.anchored)
			new/obj/machinery/am_shielding(src.loc, AMC)
			qdel(src)
		else //Stranded & Alone
			to_chat(user, "<span class='warning'>[bicon(src)]Couldn't connect to an Antimatter Control Unit.</span>")
			return

	..()