S.P.L.U.R.T-Station-13/code/game/objects/structures/guillotine.dm

#define GUILLOTINE_BLADE_MAX_SHARP  10 // This is maxiumum sharpness and will decapitate without failure
#define GUILLOTINE_DECAP_MIN_SHARP  7  // Minimum amount of sharpness for decapitation. Any less and it will just do severe brute damage
#define GUILLOTINE_ANIMATION_LENGTH 9 // How many deciseconds the animation is
#define GUILLOTINE_BLADE_RAISED     1
#define GUILLOTINE_BLADE_MOVING     2
#define GUILLOTINE_BLADE_DROPPED    3
#define GUILLOTINE_BLADE_SHARPENING 4
#define GUILLOTINE_HEAD_OFFSET      16 // How much we need to move the player to center their head
#define GUILLOTINE_LAYER_DIFF       1.2 // How much to increase/decrease a head when it's buckled/unbuckled
#define GUILLOTINE_ACTIVATE_DELAY   30 // Delay for executing someone
#define GUILLOTINE_WRENCH_DELAY     10
#define GUILLOTINE_ACTION_INUSE      5
#define GUILLOTINE_ACTION_WRENCH     6

/obj/structure/guillotine
	name = "guillotine"
	desc = "A large structure used to remove the heads of traitors and treasonists."
	icon = 'icons/obj/guillotine.dmi'
	icon_state = "guillotine_raised"
	can_buckle = TRUE
	anchored = TRUE
	density = TRUE
	max_buckled_mobs = 1
	buckle_lying = FALSE
	buckle_prevents_pull = TRUE
	layer = ABOVE_MOB_LAYER
	var/blade_status = GUILLOTINE_BLADE_RAISED
	var/blade_sharpness = GUILLOTINE_BLADE_MAX_SHARP // How sharp the blade is
	var/kill_count = 0
	var/current_action = 0 // What's currently happening to the guillotine

/obj/structure/guillotine/Initialize()
	LAZYINITLIST(buckled_mobs)
	. = ..()

/obj/structure/guillotine/examine(mob/user)
	. = ..()

	. += "It is [anchored ? "wrenched to the floor." : "unsecured. A wrench should fix that."]"
	if (blade_status == GUILLOTINE_BLADE_RAISED)
		var/msg = "The blade is raised, ready to fall, and"

		if (blade_sharpness >= GUILLOTINE_DECAP_MIN_SHARP)
			msg += " looks sharp enough to decapitate without any resistance."
		else
			msg += " doesn't look particularly sharp. Perhaps a whetstone can be used to sharpen it."
		. += msg
	else
		. += "The blade is hidden inside the stocks."

	if (LAZYLEN(buckled_mobs))
		. += "Someone appears to be strapped in. You can help them out, or you can harm them by activating the guillotine."

/obj/structure/guillotine/on_attack_hand(mob/user, act_intent = user.a_intent, unarmed_attack_flags)
	add_fingerprint(user)

	// Currently being used by something
	if (current_action)
		return

	switch (blade_status)
		if (GUILLOTINE_BLADE_MOVING)
			return
		if (GUILLOTINE_BLADE_DROPPED)
			blade_status = GUILLOTINE_BLADE_MOVING
			icon_state = "guillotine_raise"
			addtimer(CALLBACK(src, .proc/raise_blade), GUILLOTINE_ANIMATION_LENGTH)
			return
		if (GUILLOTINE_BLADE_RAISED)
			if (LAZYLEN(buckled_mobs))
				if (user.a_intent == INTENT_HARM)
					user.visible_message("<span class='warning'>[user] begins to pull the lever!</span>",
						                 "<span class='warning'>You begin to the pull the lever.</span>")
					current_action = GUILLOTINE_ACTION_INUSE

					if (do_after(user, GUILLOTINE_ACTIVATE_DELAY, target = src) && blade_status == GUILLOTINE_BLADE_RAISED)
						current_action = 0
						blade_status = GUILLOTINE_BLADE_MOVING
						icon_state = "guillotine_drop"
						addtimer(CALLBACK(src, .proc/drop_blade, user), GUILLOTINE_ANIMATION_LENGTH - 2) // Minus two so we play the sound and decap faster
					else
						current_action = 0
				else
					var/mob/living/carbon/human/H = buckled_mobs[1]

					if (H)
						H.regenerate_icons()

					unbuckle_all_mobs()
			else
				blade_status = GUILLOTINE_BLADE_MOVING
				icon_state = "guillotine_drop"
				addtimer(CALLBACK(src, .proc/drop_blade), GUILLOTINE_ANIMATION_LENGTH)

/obj/structure/guillotine/proc/raise_blade()
	blade_status = GUILLOTINE_BLADE_RAISED
	icon_state = "guillotine_raised"

/obj/structure/guillotine/proc/drop_blade(mob/user)
	if (has_buckled_mobs() && blade_sharpness)
		var/mob/living/carbon/human/H = buckled_mobs[1]

		if (!H)
			return

		var/obj/item/bodypart/head/head = H.get_bodypart("head")

		if (QDELETED(head))
			return

		playsound(src, 'sound/weapons/guillotine.ogg', 100, TRUE)
		if (blade_sharpness >= GUILLOTINE_DECAP_MIN_SHARP || head.brute_dam >= 100)
			head.dismember()
			log_combat(user, H, "beheaded", src)
			H.regenerate_icons()
			unbuckle_all_mobs()
			kill_count += 1

			var/blood_overlay = "bloody"

			if (kill_count == 2)
				blood_overlay = "bloodier"
			else if (kill_count > 2)
				blood_overlay = "bloodiest"

			blood_overlay = "guillotine_" + blood_overlay + "_overlay"
			cut_overlays()
			add_overlay(mutable_appearance(icon, blood_overlay))

			// The crowd is pleased
			// The delay is to making large crowds have a longer laster applause
			var/delay_offset = 0
			for(var/mob/M in fov_viewers(world.view, src))
				var/mob/living/carbon/human/C = M
				if (ishuman(M))
					addtimer(CALLBACK(C, /mob/.proc/emote, "clap"), delay_offset * 0.3)
					delay_offset++
		else
			H.apply_damage(15 * blade_sharpness, BRUTE, head)
			log_combat(user, H, "dropped the blade on", src, " non-fatally")
			H.emote("scream")

		if (blade_sharpness > 1)
			blade_sharpness -= 1

	blade_status = GUILLOTINE_BLADE_DROPPED
	icon_state = "guillotine"

/obj/structure/guillotine/attackby(obj/item/W, mob/user, params)
	if (istype(W, /obj/item/sharpener))
		add_fingerprint(user)
		if (blade_status == GUILLOTINE_BLADE_SHARPENING)
			return

		if (blade_status == GUILLOTINE_BLADE_RAISED)
			if (blade_sharpness < GUILLOTINE_BLADE_MAX_SHARP)
				blade_status = GUILLOTINE_BLADE_SHARPENING
				if(do_after(user, 7, target = src))
					blade_status = GUILLOTINE_BLADE_RAISED
					user.visible_message("<span class='notice'>[user] sharpens the large blade of the guillotine.</span>",
						                 "<span class='notice'>You sharpen the large blade of the guillotine.</span>")
					blade_sharpness += 1
					playsound(src, 'sound/items/unsheath.ogg', 100, 1)
					return
				else
					blade_status = GUILLOTINE_BLADE_RAISED
					return
			else
				to_chat(user, "<span class='warning'>The blade is sharp enough!</span>")
				return
		else
			to_chat(user, "<span class='warning'>You need to raise the blade in order to sharpen it!</span>")
			return
	else
		return ..()

/obj/structure/guillotine/buckle_mob(mob/living/M, force = FALSE, check_loc = TRUE)
	if (!anchored)
		to_chat(usr, "<span class='warning'>The [src] needs to be wrenched to the floor!</span>")
		return FALSE

	if (!istype(M, /mob/living/carbon/human))
		to_chat(usr, "<span class='warning'>It doesn't look like [M.p_they()] can fit into this properly!</span>")
		return FALSE // Can't decapitate non-humans

	if (blade_status != GUILLOTINE_BLADE_RAISED)
		to_chat(usr, "<span class='warning'>You need to raise the blade before buckling someone in!</span>")
		return FALSE

	return ..(M, force, FALSE)

/obj/structure/guillotine/post_buckle_mob(mob/living/M)
	if (!istype(M, /mob/living/carbon/human))
		return

	var/mob/living/carbon/human/H = M

	if (H.dna)
		if (H.dna.species)
			var/datum/species/S = H.dna.species

			if (istype(S))
				H.cut_overlays()
				H.update_body_parts_head_only()
				H.pixel_y += -GUILLOTINE_HEAD_OFFSET // Offset their body so it looks like they're in the guillotine
				H.layer += GUILLOTINE_LAYER_DIFF
			else
				unbuckle_all_mobs()
		else
			unbuckle_all_mobs()
	else
		unbuckle_all_mobs()

	..()

/obj/structure/guillotine/post_unbuckle_mob(mob/living/M)
	M.regenerate_icons()
	M.pixel_y -= -GUILLOTINE_HEAD_OFFSET // Move their body back
	M.layer -= GUILLOTINE_LAYER_DIFF
	..()

/obj/structure/guillotine/can_be_unfasten_wrench(mob/user, silent)
	if (LAZYLEN(buckled_mobs))
		if (!silent)
			to_chat(user, "<span class='warning'>Can't unfasten, someone's strapped in!</span>")
		return FAILED_UNFASTEN

	if (current_action)
		return FAILED_UNFASTEN

	return ..()

/obj/structure/guillotine/wrench_act(mob/living/user, obj/item/I)
	if (current_action)
		return

	current_action = GUILLOTINE_ACTION_WRENCH

	if (do_after(user, GUILLOTINE_WRENCH_DELAY, target = src))
		current_action = 0
		default_unfasten_wrench(user, I, 0)
		setDir(SOUTH)
		return TRUE
	else
		current_action = 0

#undef GUILLOTINE_BLADE_MAX_SHARP
#undef GUILLOTINE_DECAP_MIN_SHARP
#undef GUILLOTINE_ANIMATION_LENGTH
#undef GUILLOTINE_BLADE_RAISED
#undef GUILLOTINE_BLADE_MOVING
#undef GUILLOTINE_BLADE_DROPPED
#undef GUILLOTINE_BLADE_SHARPENING
#undef GUILLOTINE_HEAD_OFFSET
#undef GUILLOTINE_LAYER_DIFF
#undef GUILLOTINE_ACTIVATE_DELAY
#undef GUILLOTINE_WRENCH_DELAY
#undef GUILLOTINE_ACTION_INUSE
#undef GUILLOTINE_ACTION_WRENCH