vgstation13/code/modules/mob/living/carbon/human/human_damage.dm

//Updates the mob's health from organs and mob damage variables
/mob/living/carbon/human/updatehealth()
	if(status_flags & GODMODE)
		health = maxHealth
		stat = CONSCIOUS
		return
	var/total_burn	= 0
	var/total_brute	= 0
	for(var/datum/organ/external/O in organs)	//hardcoded to streamline things a bit
		if(O.is_organic() && O.is_existing())
			total_brute	+= O.brute_dam
			total_burn	+= O.burn_dam
	var/prevhealth = health
	health = maxHealth - getOxyLoss() - getToxLoss() - getCloneLoss() - total_burn - total_brute
	critlog(health,prevhealth)
	if((maxHealth - total_burn) < config.health_threshold_dead)
		death(FALSE)
		ChangeToHusk()
	return

/mob/living/carbon/human/getBrainLoss()
	var/res = brainloss
	if(species && species.has_organ["brain"])
		var/datum/organ/internal/brain/sponge = internal_organs_by_name["brain"]
		if(!sponge)
			res += 200
		else
			if (sponge.is_bruised())
				res += 20
			if (sponge.is_broken())
				res += 50

		res = min(res,maxHealth*2)
		return res
	return 0

//These procs fetch a cumulative total damage from all organs
/mob/living/carbon/human/getBruteLoss(var/ignore_inorganic = FALSE)
	var/amount = 0
	for(var/datum/organ/external/O in organs)
		if(ignore_inorganic && !O.is_organic())
			continue
		amount += O.brute_dam
	return amount

/mob/living/carbon/human/getFireLoss(var/ignore_inorganic = FALSE)
	var/amount = 0
	for(var/datum/organ/external/O in organs)
		if(ignore_inorganic && !O.is_organic())
			continue
		amount += O.burn_dam
	return amount


/mob/living/carbon/human/adjustBruteLoss(var/amount)

	amount = amount * brute_damage_modifier

	if(INVOKE_EVENT(src, /event/damaged, "kind" = BRUTE, "amount" = amount))
		return 0

	if(amount > 0)
		take_overall_damage(amount, 0)
	else
		heal_overall_damage(-amount, 0)
	hud_updateflag |= 1 << HEALTH_HUD

/mob/living/carbon/human/adjustFireLoss(var/amount)
	amount = amount * burn_damage_modifier

	if(INVOKE_EVENT(src, /event/damaged, "kind" = BURN, "amount" = amount))
		return 0

	if(amount > 0)
		take_overall_damage(0, amount)
		if(config.burn_damage_ash && amount >= config.burn_damage_ash)
			dust(TRUE)
			return
	else
		heal_overall_damage(0, -amount)
	hud_updateflag |= 1 << HEALTH_HUD

/mob/living/carbon/human/proc/adjustBruteLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
	amount = amount * brute_damage_modifier

	if(INVOKE_EVENT(src, /event/damaged, "kind" = BRUTE, "amount" = amount))
		return 0

	if (organ_name in organs_by_name)
		var/datum/organ/external/O = get_organ(organ_name)

		if(amount > 0)
			O.take_damage(amount, 0, sharp=damage_source.is_sharp(), edge=damage_source.sharpness_flags & SHARP_BLADE, used_weapon=damage_source)
		else
			//if you don't want to heal robot organs, they you will have to check that yourself before using this proc.
			O.heal_damage(-amount, 0, internal=0, robo_repair=(O.status & ORGAN_ROBOT))

	hud_updateflag |= 1 << HEALTH_HUD

/mob/living/carbon/human/proc/adjustFireLossByPart(var/amount, var/organ_name, var/obj/damage_source = null)
	amount = amount * burn_damage_modifier

	if(INVOKE_EVENT(src, /event/damaged, "kind" = BURN, "amount" = amount))
		return 0

	if (organ_name in organs_by_name)
		var/datum/organ/external/O = get_organ(organ_name)

		if(amount > 0)
			O.take_damage(0, amount, sharp=damage_source.is_sharp(), edge=damage_source.sharpness_flags & SHARP_BLADE, used_weapon=damage_source)
		else
			//if you don't want to heal robot organs, they you will have to check that yourself before using this proc.
			O.heal_damage(0, -amount, internal=0, robo_repair=(O.status & ORGAN_ROBOT))

	hud_updateflag |= 1 << HEALTH_HUD

/mob/living/carbon/human/Stun(amount)
	if(M_HULK in mutations)
		return
	..()

/mob/living/carbon/human/Knockdown(amount)
	if(M_HULK in mutations)
		return
	handle_spaghetti(100)
	..()

/mob/living/carbon/human/Paralyse(amount)
	if(M_HULK in mutations)
		return
	..()

/mob/living/carbon/human/adjustCloneLoss(var/amount)
	..()

	amount = amount * clone_damage_modifier
	if(isslimeperson(src))
		amount = 0

	if(INVOKE_EVENT(src, /event/damaged, "kind" = CLONE, "amount" = amount))
		return 0

	var/heal_prob = max(0, 80 - getCloneLoss())
	var/mut_prob = min(80, getCloneLoss()+10)
	if (amount > 0)
		if (prob(mut_prob))
			var/list/datum/organ/external/candidates = list()
			for (var/datum/organ/external/O in organs)
				if(O.is_organic() && O.is_usable())
					candidates |= O
			if (candidates.len)
				var/datum/organ/external/O = pick(candidates)
				O.mutate()
				to_chat(src, "<span class = 'notice'>Something is not right with your [O.display_name]...</span>")
				return
	else
		if (prob(heal_prob))
			for (var/datum/organ/external/O in organs)
				if (O.is_existing() && O.status & ORGAN_MUTATED)
					O.unmutate()
					to_chat(src, "<span class = 'notice'>Your [O.display_name] is shaped normally again.</span>")
					return

	if (getCloneLoss() < 1)
		for (var/datum/organ/external/O in organs)
			if (O.is_existing() && O.status & ORGAN_MUTATED)
				O.unmutate()
				to_chat(src, "<span class = 'notice'>Your [O.display_name] is shaped normally again.</span>")
	hud_updateflag |= 1 << HEALTH_HUD

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

//Returns a list of damaged organs
/mob/living/carbon/human/proc/get_damaged_organs(var/brute, var/burn, var/ignore_inorganic = FALSE)
	var/list/datum/organ/external/parts = list()
	for(var/datum/organ/external/O in organs)
		if(((brute && O.brute_dam) || (burn && O.burn_dam)) && !(ignore_inorganic && !O.is_organic()))
			parts += O
	return parts

//Returns a list of damageable organs
/mob/living/carbon/human/proc/get_damageable_organs(var/ignore_inorganics = FALSE)
	var/list/datum/organ/external/parts = list()
	for(var/datum/organ/external/O in organs)
		if(!O.is_existing())
			continue
		if(ignore_inorganics && !O.is_organic())
			continue
		if(O.brute_dam + O.burn_dam < O.max_damage)
			parts += O
	return parts

//Heals ONE external organ, organ gets randomly selected from damaged ones.
//It automatically updates damage overlays if necesary
//It automatically updates health status
/mob/living/carbon/human/heal_organ_damage(var/brute, var/burn)
	var/list/datum/organ/external/parts = get_damaged_organs(brute,burn,TRUE)
	if(!parts.len)
		return
	var/datum/organ/external/picked = pick(parts)
	if(picked.heal_damage(brute,burn))
		UpdateDamageIcon()
		hud_updateflag |= 1 << HEALTH_HUD
	updatehealth()


/*
In most cases it makes more sense to use apply_damage() instead! And make sure to check armour if applicable.
*/
//Damages ONE external organ, organ gets randomly selected from damagable ones.
//It automatically updates damage overlays if necesary
//It automatically updates health status
/mob/living/carbon/human/take_organ_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0, var/ignore_inorganics = FALSE)
	var/list/datum/organ/external/parts = get_damageable_organs(ignore_inorganics)
	if(!parts.len)
		return
	var/datum/organ/external/picked = pick(parts)
	if(picked.take_damage(brute,burn,sharp,edge))
		UpdateDamageIcon()
		hud_updateflag |= 1 << HEALTH_HUD
	updatehealth()
	//speech_problem_flag = 1


//Heal MANY external organs, in random order
/mob/living/carbon/human/heal_overall_damage(var/brute, var/burn)
	var/list/datum/organ/external/parts = get_damaged_organs(brute,burn,TRUE)
	var/datum/organ/internal/heart/hivelord/H = get_heart()
	if(istype(H)) // hivelord hearts just heal better
		brute *= 2
		burn *= 2
	var/update = 0
	while(parts.len && (brute>0 || burn>0) )
		var/datum/organ/external/picked = pick(parts)

		var/brute_was = picked.brute_dam
		var/burn_was = picked.burn_dam

		update |= picked.heal_damage(brute,burn)

		brute -= (brute_was-picked.brute_dam)
		burn -= (burn_was-picked.burn_dam)

		parts -= picked
	updatehealth()
	hud_updateflag |= 1 << HEALTH_HUD
	//speech_problem_flag = 1
	if(update)
		UpdateDamageIcon()

// damage MANY external organs, in random order
/mob/living/carbon/human/take_overall_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0, var/used_weapon = null)
	if(species && species.burn_mod)
		burn = burn*species.burn_mod
	if(species && species.brute_mod)
		brute = brute*species.brute_mod

	if(status_flags & GODMODE)
		return 0	//godmode

	. = brute + burn

	var/list/datum/organ/external/parts = get_damageable_organs()
	var/update = 0
	while(parts.len && (brute>0 || burn>0) )
		var/datum/organ/external/picked = pick(parts)

		var/brute_was = picked.brute_dam
		var/burn_was = picked.burn_dam

		update |= picked.take_damage(brute,burn,sharp,edge,used_weapon)
		brute	-= (picked.brute_dam - brute_was)
		burn	-= (picked.burn_dam - burn_was)

		parts -= picked
	updatehealth()
	hud_updateflag |= 1 << HEALTH_HUD
	if(update)
		UpdateDamageIcon()

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

/*
This function restores the subjects blood to max.
*/
/mob/living/carbon/human/proc/restore_blood()
	if(!(species.anatomy_flags & NO_BLOOD))
		var/blood_volume = vessel.get_reagent_amount(BLOOD)
		vessel.add_reagent(BLOOD,560.0-blood_volume)


/*
This function restores all organs.
*/
/mob/living/carbon/human/restore_all_organs()
	for(var/datum/organ/external/current_organ in organs)
		current_organ.rejuvenate()

/mob/living/carbon/human/proc/HealDamage(zone, brute, burn)
	var/datum/organ/external/E = get_organ(zone)
	if(istype(E, /datum/organ/external))
		if (E.heal_damage(brute, burn))
			UpdateDamageIcon()
			hud_updateflag |= 1 << HEALTH_HUD
	else
		return 0
	return


/mob/living/carbon/human/get_organ(var/zone, cosmetic = FALSE)
	RETURN_TYPE(/datum/organ/external)
	if(!zone)
		zone = LIMB_CHEST
	if (zone in list( "eyes", "mouth" ))
		zone = LIMB_HEAD
	var/list/organ_list = organs_by_name.Copy()
	if(cosmetic)
		organ_list |= cosmetic_organs_by_name
	return organ_list[zone]

/mob/living/carbon/human/proc/get_cosmetic_organ(zone)
	RETURN_TYPE(/datum/organ/external)
	return cosmetic_organs_by_name[zone]

//Picks a random usable organ from the organs passed to the arguments
//You can feed organ references, or organ strings into this obj
//So this is valid: pick_usable_organ(LIMB_LEFT_LEG, new /datum/organ/external/r_leg)
/mob/living/carbon/human/proc/pick_usable_organ()
	var/list/organs = args.Copy()

	ASSERT(organs.len) //this proc should always be called with arguments

	//Convert list of strings to list of organ objects
	for(var/organ_ in organs)
		if(istext(organ_))
			organs.Add(get_organ(organ_))
			organs.Remove(organ_)
		else if(!istype(organ_, /datum/organ/external))
			organs.Remove(organ_)

	var/datum/organ/external/result

	while(!result && organs.len)
		result = pick_n_take(organs)
		if(!result.is_usable())
			result = null

	return result

//Proc that returns a list of organs converted from string IDs
//get_organs("l_leg", "r_leg") will return a list with left and right leg datums
//It will also accept lists with string IDs
/mob/living/carbon/human/get_organs()
	var/list/organ_list = list()

	for(var/O in args)
		if(islist(O))
			for(var/organ_id in O)
				organ_list.Add(src.get_organ(organ_id))

		else if(istext(O))
			organ_list.Add(src.get_organ(O))

	return organ_list

/mob/living/carbon/human/apply_damage(var/damage = 0,var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/sharp = 0, var/edge = 0, var/obj/used_weapon = null, ignore_events = 0)

	//visible_message("Hit debug. [damage] | [damagetype] | [def_zone] | [blocked] | [sharp] | [used_weapon]")
	if((damagetype != BRUTE) && (damagetype != BURN))
		return ..(damage, damagetype, def_zone, blocked, ignore_events = ignore_events)
	if(blocked >= 100)
		return 0

	var/datum/organ/external/organ = null
	if(isorgan(def_zone))
		organ = def_zone
	else
		if(!def_zone)
			def_zone = ran_zone(def_zone)
		organ = get_organ(check_zone(def_zone))
	if(!organ)
		return 0

	if(blocked)
		damage = (damage/100)*(100-blocked)

	if(!ignore_events && INVOKE_EVENT(src, /event/damaged, "kind" = damagetype, "amount" = damage))
		return 0 //This event code is also in the mob/living parent which this proc mostly overrides.

	switch(damagetype)
		if(BRUTE)
			damage = damage * brute_damage_modifier

			if (damage > 0)
				damageoverlaytemp = 20

			if(organ.take_damage(damage, 0, sharp, edge, used_weapon))
				UpdateDamageIcon(1)
		if(BURN)
			damage = damage * burn_damage_modifier

			if (damage > 0)
				damageoverlaytemp = 20

			if(organ.take_damage(0, damage, sharp, edge, used_weapon))
				UpdateDamageIcon(1)

	// Will set our damageoverlay icon to the next level, which will then be set back to the normal level the next mob.Life().
	updatehealth()
	hud_updateflag |= 1 << HEALTH_HUD

	//Embedded projectile code.
	if(!organ)
		return damage
/*/vg/ EDIT
	if(istype(used_weapon,/obj/item/weapon))
		var/obj/item/weapon/W = used_weapon  //Sharp objects will always embed if they do enough damage.
		if( (damage > (10*W.w_class)) && ( (sharp && !ismob(W.loc)) || prob(damage/W.w_class) ) )
			if(!istype(W, /obj/item/weapon/kitchen/utensil/knife/large/butch/meatcleaver))
				organ.implants += W
				visible_message("<span class='danger'>\The [W] sticks in the wound!</span>")
				W.add_blood(src)
				if(ismob(W.loc))
					var/mob/living/H = W.loc
					H.drop_item(W, src)
				W.forceMove(src)
*/
	if(istype(used_weapon,/obj/item/projectile/bullet)) //We don't want to use the actual projectile item, so we spawn some shrapnel.
		var/obj/item/projectile/bullet/P = used_weapon
		if(prob(75) && damagetype == BRUTE && P.embed)
			var/obj/item/weapon/shard/shrapnel/S = new()
			S.name = "[P.name] shrapnel"
			S.desc = "[S.desc] It looks like it was fired from [P.shot_from]."
			S.forceMove(src)
			organ.implants += S
			if(P.embed_message)
				visible_message("<span class='danger'>The projectile sticks in the wound!</span>")
			S.add_blood(src)
	if(istype(used_weapon,/obj/item/projectile/flare)) //We want them to carry the flare, not a projectile
		var/obj/item/projectile/flare/F = used_weapon
		if(damagetype == BURN && F.embed && (istype(F.shot_from, /obj/item/weapon/gun/projectile/flare/syndicate) || istype(F.shot_from, /obj/item/weapon/gun/lawgiver)) && prob(75)) //only syndicate guns are dangerous, except for the lawgiver, which is intended to fire incendiary rounds
			var/obj/item/device/flashlight/flare/FS = new
			FS.name = "shot [FS.name]"
			FS.desc = "[FS.desc]. It looks like it was fired from [F.shot_from]."
			FS.forceMove(src)
			organ.implants += FS
			visible_message("<span class='danger'>The flare sticks in the wound!</span>")
			FS.add_blood(src)
			FS.luminosity = 4 //not so bright, because it's inside them
			FS.Light(src) //Now they glow, because the flare is lit
			if(prob(80)) //tends to happen, which is good
				visible_message("<span class='danger'><b>[name]</b> bursts into flames!</span>", "<span class='danger'>You burst into flames!</span>")
				on_fire = 1
				adjust_fire_stacks(0.5) //as seen in ignite code
				update_icon = 1
			qdel(F)
	return damage

//Adds cancer, including stage of cancer and limb
//Right now cancer is adminbus only. You can inflict it via the full (old) Player Panel and all "prayer types" (includes Centcomm message)
//Of course, should it ever come back for realsies, that's the right way to do it. But let's not be silly now
//IMPORTANT NOTE: Currently only works on external organs, because the person who wrote organ code has brain cancer, hopefully I will sweep back to fix this in a later PR
//Since I'd have to change hundreds of procs going through organs, that's not something I'll do now
/mob/living/carbon/human/proc/add_cancer(var/stage = 1, var/target)

	var/datum/organ/picked_organ
	if(target)
		picked_organ = organs_by_name["[target]"]
	else
		picked_organ = pick(organs)

	if(picked_organ)
		picked_organ.cancer_stage += stage //This can pick a limb which already has cancer, in which case it will add to it

/mob/living/carbon/human/proc/limitedrevive()
	resurrect()
	timeofdeath = 0
	tod = null

	toxloss = 0
	oxyloss = 0
	bruteloss = 0
	fireloss = 0
	for(var/datum/organ/external/O in organs)
		if(O.destspawn || O.is_robotic())
			continue
		O.rejuvenate()
		O.number_wounds = 0
		O.wounds = list()
	heal_overall_damage(1000, 1000)
	if(reagents)
		reagents.clear_reagents()
	restore_blood()
	bodytemperature = 310
	stat = status_flags & BUDDHAMODE ? CONSCIOUS : UNCONSCIOUS
	regenerate_icons()
	flash_eyes(visual = 1)
	apply_effect(10, EYE_BLUR)
	apply_effect(10, WEAKEN)
	update_canmove()

/mob/living/carbon/human/apply_radiation(var/rads, var/application = RAD_EXTERNAL)
	if(species.flags & RAD_IMMUNE)
		return
	if(application == RAD_EXTERNAL)
		INVOKE_EVENT(src, /event/irradiate, "user" = src, "rads" = rads)
	if(reagents)
		if(reagents.has_reagent(LITHOTORCRAZINE))
			rads /= 2
	if(species.rad_mod)
		rads *= species.rad_mod
	return ..()