/*
	Screen objects
	Todo: improve/re-implement

	Screen objects are only used for the hud and should not appear anywhere "in-game".
	They are used with the client/screen list and the screen_loc var.
	For more information, see the byond documentation on the screen_loc and screen vars.
*/
/obj/screen
	name = ""
	icon = 'icons/mob/screen/generic.dmi'
	layer = 20.0
	unacidable = 1
	var/obj/master = null	//A reference to the object in the slot. Grabs or items, generally.
	appearance_flags = NO_CLIENT_COLOR

/obj/screen/Destroy(force = FALSE)
	master = null
	screen_loc = null
	return ..()

/obj/screen/text
	icon = null
	icon_state = null
	mouse_opacity = 0
	screen_loc = "CENTER-7,CENTER-7"
	maptext_height = 480
	maptext_width = 480


/obj/screen/inventory
	var/slot_id	//The indentifier for the slot. It has nothing to do with ID cards.


/obj/screen/close
	name = "close"

/obj/screen/close/Click()
	if(master)
		if(istype(master, /obj/item/weapon/storage))
			var/obj/item/weapon/storage/S = master
			S.close(usr)
	return 1


/obj/screen/item_action
	var/obj/item/owner

/obj/screen/item_action/Destroy()
	. = ..()
	owner = null

/obj/screen/item_action/Click()
	if(!usr || !owner)
		return 1
	if(!usr.canClick())
		return

	if(usr.stat || usr.restrained() || usr.stunned || usr.lying)
		return 1

	if(!(owner in usr))
		return 1

	owner.ui_action_click()
	return 1

/obj/screen/grab
	name = "grab"

/obj/screen/grab/Click()
	var/obj/item/weapon/grab/G = master
	G.s_click(src)
	return 1

/obj/screen/grab/attack_hand()
	return

/obj/screen/grab/attackby()
	return


/obj/screen/storage
	name = "storage"
	layer = 19
	screen_loc = "7,7 to 10,8"

/obj/screen/storage/Click()
	if(!usr.canClick())
		return 1
	if(usr.stat || usr.paralysis || usr.stunned || usr.weakened)
		return 1
	if (istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
		return 1
	if(master)
		var/obj/item/I = usr.get_active_hand()
		if(I)
			usr.ClickOn(master)
	return 1

/obj/screen/zone_sel
	name = "damage zone"
	icon_state = "zone_sel"
	screen_loc = ui_zonesel
	var/selecting = "chest"

/obj/screen/zone_sel/Click(location, control,params)
	var/list/PL = params2list(params)
	var/icon_x = text2num(PL["icon-x"])
	var/icon_y = text2num(PL["icon-y"])
	var/old_selecting = selecting //We're only going to update_icon() if there's been a change

	switch(icon_y)
		if(1 to 3) //Feet
			switch(icon_x)
				if(10 to 15)
					selecting = "r_foot"
				if(17 to 22)
					selecting = "l_foot"
				else
					return 1
		if(4 to 9) //Legs
			switch(icon_x)
				if(10 to 15)
					selecting = "r_leg"
				if(17 to 22)
					selecting = "l_leg"
				else
					return 1
		if(10 to 13) //Hands and groin
			switch(icon_x)
				if(8 to 11)
					selecting = "r_hand"
				if(12 to 20)
					selecting = "groin"
				if(21 to 24)
					selecting = "l_hand"
				else
					return 1
		if(14 to 22) //Chest and arms to shoulders
			switch(icon_x)
				if(8 to 11)
					selecting = "r_arm"
				if(12 to 20)
					selecting = "chest"
				if(21 to 24)
					selecting = "l_arm"
				else
					return 1
		if(23 to 30) //Head, but we need to check for eye or mouth
			if(icon_x in 12 to 20)
				selecting = "head"
				switch(icon_y)
					if(23 to 24)
						if(icon_x in 15 to 17)
							selecting = "mouth"
					if(26) //Eyeline, eyes are on 15 and 17
						if(icon_x in 14 to 18)
							selecting = "eyes"
					if(25 to 27)
						if(icon_x in 15 to 17)
							selecting = "eyes"

	if(old_selecting != selecting)
		update_icon()
	return 1

/obj/screen/zone_sel/proc/set_selected_zone(bodypart)
	var/old_selecting = selecting
	selecting = bodypart
	if(old_selecting != selecting)
		update_icon()

/obj/screen/zone_sel/update_icon()
	cut_overlays()
	add_overlay(image('icons/mob/zone_sel.dmi', "[selecting]"))

/obj/screen/Click(location, control, params)
	if(!usr)	return 1
	switch(name)
		if("toggle")
			if(usr.hud_used.inventory_shown)
				usr.hud_used.inventory_shown = 0
				usr.client.screen -= usr.hud_used.other
			else
				usr.hud_used.inventory_shown = 1
				usr.client.screen += usr.hud_used.other

			usr.hud_used.hidden_inventory_update()

		if("equip")
			if (istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
				return 1
			if(ishuman(usr))
				var/mob/living/carbon/human/H = usr
				H.quick_equip()

		if("resist")
			if(isliving(usr))
				var/mob/living/L = usr
				L.resist()

		if("act_intent")
			usr.a_intent_change("right")
		if(I_HELP)
			usr.a_intent = I_HELP
			usr.hud_used.action_intent.icon_state = "intent_help"
		if(I_HURT)
			usr.a_intent = I_HURT
			usr.hud_used.action_intent.icon_state = "intent_harm"
		if(I_GRAB)
			usr.a_intent = I_GRAB
			usr.hud_used.action_intent.icon_state = "intent_grab"
		if(I_DISARM)
			usr.a_intent = I_DISARM
			usr.hud_used.action_intent.icon_state = "intent_disarm"

		if("pull")
			usr.stop_pulling()
		if("throw")
			if(!usr.stat && isturf(usr.loc) && !usr.restrained())
				usr:toggle_throw_mode()
		if("drop")
			if(usr.client)
				usr.client.drop_item()

		if("up hint")
			var/turf/T = GetAbove(usr)
			if (!T)
				to_chat(usr, "<span class='notice'>There is nothing above you!</span>")
			else if (T.is_hole)
				to_chat(usr, "<span class='notice'>There's no roof above your head! You can see up!</span>")
			else
				to_chat(usr, "<span class='notice'>You see a ceiling staring back at you.</span>")

		if("module")
			if(isrobot(usr))
				var/mob/living/silicon/robot/R = usr
//				if(R.module)
//					R.hud_used.toggle_show_robot_modules()
//					return 1
				R.pick_module()

		if("inventory")
			if(isrobot(usr))
				var/mob/living/silicon/robot/R = usr
				if(R.module)
					R.hud_used.toggle_show_robot_modules()
					return 1
				else
					to_chat(R, "You haven't selected a module yet.")

		if("radio")
			if(issilicon(usr))
				usr:radio_menu()
		if("panel")
			if(issilicon(usr))
				usr:installed_modules()

		if("store")
			if(isrobot(usr))
				var/mob/living/silicon/robot/R = usr
				if(R.module)
					R.uneq_active()
					R.hud_used.update_robot_modules_display()
				else
					to_chat(R, "You haven't selected a module yet.")

		else
			return 0
	return 1

/obj/screen/inventory/Click()
	// At this point in client Click() code we have passed the 1/10 sec check and little else
	// We don't even know if it's a middle click
	if(!usr.canClick())
		return 1
	if(usr.stat || usr.paralysis || usr.stunned || usr.weakened)
		return 1
	if (istype(usr.loc,/obj/mecha)) // stops inventory actions in a mech
		return 1
	switch(name)
		if("r_hand")
			if(iscarbon(usr))
				var/mob/living/carbon/C = usr
				C.activate_hand("r")
		if("l_hand")
			if(iscarbon(usr))
				var/mob/living/carbon/C = usr
				C.activate_hand("l")
		if("swap")
			usr:swap_hand()
		if("hand")
			usr:swap_hand()
		else
			if(usr.attack_ui(slot_id))
				usr.update_inv_l_hand(0)
				usr.update_inv_r_hand(0)
	return 1

/obj/screen/movement_intent
	name = "mov_intent"
	screen_loc = ui_movi
	layer = 20

//This updates the run/walk button on the hud
/obj/screen/movement_intent/proc/update_move_icon(var/mob/living/user)
	if (!user.client)
		return

	if (user.max_stamina == -1 || user.stamina == user.max_stamina)
		if (user.stamina_bar)
			QDEL_NULL(user.stamina_bar)
	else
		if (!user.stamina_bar)
			user.stamina_bar = new(user, user.max_stamina, src)

		user.stamina_bar.update(user.stamina)

	if (user.m_intent == "run")
		icon_state = "running"
	else
		icon_state = "walking"

/obj/screen/movement_intent/Click(location, control, params)
	if(!usr)
		return 1
	var/list/modifiers = params2list(params)

	if(iscarbon(usr))
		var/mob/living/carbon/C = usr
		if (modifiers["alt"])
			C.set_walk_speed()
			return

		if(C.legcuffed)
			to_chat(C, "<span class='notice'>You are legcuffed! You cannot run until you get [C.legcuffed] removed!</span>")
			C.m_intent = "walk"	//Just incase
			C.hud_used.move_intent.icon_state = "walking"
			return 1
		switch(usr.m_intent)
			if("run")
				usr.m_intent = "walk"
			if("walk")
				usr.m_intent = "run"

		update_move_icon(usr)