Paradise/code/modules/surgery/organs/brain.dm

/obj/item/organ/internal/brain
	name = "brain"
	max_damage = 120
	icon_state = "brain2"
	force = 1.0
	w_class = WEIGHT_CLASS_SMALL
	throwforce = 1.0
	throw_speed = 3
	throw_range = 5
	origin_tech = "biotech=5"
	attack_verb = list("attacked", "slapped", "whacked")
	var/mob/living/brain/brainmob = null
	organ_tag = "brain"
	parent_organ = "head"
	slot = "brain"
	vital = TRUE
	hidden_pain = TRUE //the brain has no pain receptors, and brain damage is meant to be a stealthy damage type.
	var/mmi_icon = 'icons/obj/assemblies.dmi'
	var/mmi_icon_state = "mmi_full"

	/// If it's a fake brain without a mob assigned that should still be treated like a real brain.
	var/decoy_brain = FALSE
	/// Do we have temporary brain max hp reduction?
	var/temporary_damage = 0

/obj/item/organ/internal/brain/xeno
	name = "xenomorph brain"
	desc = "We barely understand the brains of terrestial animals. Who knows what we may find in the brain of such an advanced species?"
	icon_state = "brain-x"
	origin_tech = "biotech=6"
	mmi_icon = 'icons/mob/alien.dmi'
	mmi_icon_state = "AlienMMI"

/obj/item/organ/internal/brain/Destroy()
	QDEL_NULL(brainmob)
	return ..()

/obj/item/organ/internal/brain/proc/transfer_identity(mob/living/carbon/H)
	brainmob = new(src)
	if(isnull(dna)) // someone didn't set this right...
		stack_trace("[src] at [loc] did not contain a dna datum at time of removal.")
		dna = H.dna.Clone()
	if(dna.real_name)
		name = "\the [dna.real_name]'s [initial(name)]"
		brainmob.name = dna.real_name
		brainmob.real_name = dna.real_name
	else
		name = "\the [H.real_name]'s [initial(name)]"
		brainmob.name = H.real_name
		brainmob.real_name = H.real_name
	brainmob.dna = dna.Clone() // Silly baycode, what you do
	brainmob.timeofhostdeath = H.timeofdeath
	if(H.mind)
		H.mind.transfer_to(brainmob)

	to_chat(brainmob, "<span class='notice'>You feel slightly disoriented. That's normal when you're just a [initial(name)].</span>")

/obj/item/organ/internal/brain/examine(mob/user) // -- TLE
	. = ..()
	if(brainmob && brainmob.client)//if thar be a brain inside... the brain.
		. += "You can feel a bright spark of life in this one!"
		return
	if(brainmob?.mind)
		if(brainmob.get_ghost())
			. += "You can feel the small spark of life still left in this one."
			return

	. += "This one seems particularly lifeless. Perhaps it will regain some of its luster later.."

/obj/item/organ/internal/brain/remove(mob/living/user, special = 0)
	if(dna)
		name = "[dna.real_name]'s [initial(name)]"

	if(!owner) return ..() // Probably a redundant removal; just bail

	var/obj/item/organ/internal/brain/B = src
	if(!special)
		if(owner.mind && !non_primary && !decoy_brain)//don't transfer if the owner does not have a mind.
			B.transfer_identity(user)

	if(ishuman(owner))
		var/mob/living/carbon/human/H = owner
		H.update_hair()

	owner.thought_bubble_image = initial(owner.thought_bubble_image)
	. = ..()

/obj/item/organ/internal/brain/insert(mob/living/target, special = 0)

	name = "[initial(name)]"
	var/brain_already_exists = FALSE
	if(ishuman(target)) // No more IPC multibrain shenanigans
		if(target.get_int_organ(/obj/item/organ/internal/brain))
			brain_already_exists = TRUE

		var/mob/living/carbon/human/H = target
		H.update_hair()

	if(IS_CHANGELING(target))
		decoy_brain = TRUE

	if(!brain_already_exists)
		if(brainmob)
			if(target.key)
				target.ghostize()
			if(brainmob.mind)
				brainmob.mind.transfer_to(target)
			else
				target.key = brainmob.key
	else
		log_debug("Multibrain shenanigans at ([target.x],[target.y],[target.z]), mob '[target]'")
	..(target, special = special)

/obj/item/organ/internal/brain/receive_damage(amount, silent = 0) //brains are special; if they receive damage by other means, we really just want the damage to be passed ot the owner and back onto the brain.
	if(owner)
		owner.adjustBrainLoss(amount)

/obj/item/organ/internal/brain/necrotize(update_sprite = TRUE, ignore_vital_death = FALSE) //Brain also has special handling for when it necrotizes
	damage = max_damage
	status |= ORGAN_DEAD
	STOP_PROCESSING(SSobj, src)
	if(dead_icon && !is_robotic())
		icon_state = dead_icon
	if(owner && vital)
		owner.setBrainLoss(120)

/obj/item/organ/internal/brain/on_life()
	if(decoy_brain)
		return

	var/ratio = damage / max_damage // Get our damage as a percentage of max HP
	if(ratio < BRAIN_DAMAGE_RATIO_LIGHT)
		return

	switch(ratio)
		if(BRAIN_DAMAGE_RATIO_LIGHT to BRAIN_DAMAGE_RATIO_MINOR)
			handle_minor_brain_damage()
		if(BRAIN_DAMAGE_RATIO_MINOR to BRAIN_DAMAGE_RATIO_MODERATE)
			handle_moderate_brain_damage()
		if(BRAIN_DAMAGE_RATIO_MODERATE to BRAIN_DAMAGE_RATIO_SEVERE)
			handle_severe_brain_damage()
		if(BRAIN_DAMAGE_RATIO_SEVERE to BRAIN_DAMAGE_RATIO_CRITICAL)
			handle_critical_brain_damage()

	if(temporary_damage) // Heal our max hp limit by one per cycle
		// We use `clamp()` here because `temporary_damage` can have decimals
		temporary_damage = clamp(temporary_damage - 0.25, 0, 120)
		max_damage = clamp(max_damage + 0.25, 0, 120)

/obj/item/organ/internal/brain/proc/handle_minor_brain_damage()
	if(prob(5))
		owner.Dizzy(5 SECONDS)
		to_chat(owner, "<span class='warning'>Your head feels foggy.</span>")
	else if(prob(4))
		owner.vomit()
		to_chat(owner, "<span class='warning'>You feel nauseous.</span>")

/obj/item/organ/internal/brain/proc/handle_moderate_brain_damage()
	if(prob(4))
		owner.Confused(20 SECONDS)
		to_chat(owner, "<span class='warning'>It's suddenly difficult to walk straight.</span>")
	else if(prob(5))
		owner.EyeBlurry(15 SECONDS)
		to_chat(owner, "<span class='warning'>Your vision unfocuses.</span>")
	else if(prob(3))
		owner.Slur(60 SECONDS)
		owner.Stuttering(60 SECONDS)
		to_chat(owner, "<span class='warning'>You can't form your words properly.</span>")

/obj/item/organ/internal/brain/proc/handle_severe_brain_damage()
	if(prob(5))
		owner.Hallucinate(60 SECONDS)
		to_chat(owner, "<span class='warning'>You start losing your grip on reality.</span>")
	else if(prob(3))
		owner.Drowsy(20 SECONDS)
		to_chat(owner, "<span class='warning'>You're getting tired.</span>")
	else if(prob(2))
		owner.Stun(5 SECONDS)
		to_chat(owner, "<span class='warning'>You stare forward in a stupor.</span>")
	else if(prob(5))
		owner.KnockDown(1 SECONDS)
		to_chat(owner, "<span class='warning'>You lose your footing, and stumble.</span>")

/obj/item/organ/internal/brain/proc/handle_critical_brain_damage()
	if(prob(4))
		owner.Silence(45 SECONDS)
		to_chat(owner, "<span class='warning'>You open your mouth to speak, but no sound comes out.</span>")
	else if(prob(5))
		owner.EyeBlind(30 SECONDS)
		to_chat(owner, "<span class='warning'>Your vision gives out.</span>")
	else if(prob(5))
		owner.Weaken(10 SECONDS)
		owner.Jitter(150 SECONDS)
		to_chat(owner, "<span class='warning'>You start to have a seizure.</span>")

/obj/item/organ/internal/brain/prepare_eat()
	return // Too important to eat.

// Hello I am from the ministry of rubber forehead aliens how are you
/obj/item/organ/internal/brain/slime
	name = "slime core"
	desc = "A complex, organic knot of jelly and crystalline particles."
	icon = 'icons/mob/slimes.dmi'
	icon_state = "green slime extract"
	mmi_icon_state = "slime_mmi"
	organ_datums = list(/datum/organ/heart, /datum/organ/lungs/slime)

/obj/item/organ/internal/brain/golem
	name = "Runic mind"
	desc = "A tightly furled roll of paper, covered with indecipherable runes."
	icon = 'icons/obj/wizard.dmi'
	icon_state = "scroll"

/obj/item/organ/internal/brain/cluwne

/obj/item/organ/internal/brain/cluwne/insert(mob/living/target, special = 0, make_cluwne = 1)
	..(target, special = special)
	if(ishuman(target) && make_cluwne)
		var/mob/living/carbon/human/H = target
		H.makeCluwne() //No matter where you go, no matter what you do, you cannot escape