Yogstation/code/game/machinery/sci_bombardment.dm

/**
* A machine used for Toxins scientists. Accepts tank transfer valves (TTVs),
* then shoots (and detonates) them at Lavaland Z-level GPS coordinates provided.
*
* Five primary variables are used to operate the machine:
*		lavaland - setup during Init(), defines Z-level of lavaland for GPS checks
*		locked - Locks/Unlocks all interactions w/ LAM, except for loading a TTV into it.
*		dest - Turf that is selected as a target for the TTV to be shot at. Does not change unless a new target is chosen.
*		targetdest - Name of the GPS selected at the same time as var/dest.
*		tcoords - X, Y, Z coordinates selected at the same time as var/dest.
*		scibomb - Variable that stores the TTV.
*
* Additional secondary variables:
*		radio_freq - Restricts machine to only speak on Science radio channel. This allows Miners to hear the LAM
*			announcements as well.
*		countdown - Adjustable value used to determine the time until the TTV is deployed to Lavaland.
*		stopcount - Variable affected by ui_act("launch"). Used during countdown() to maintain or break the loop.
*		mincount - Value that restricts var/countdown from being less than it.
*		tick - Value that uses var/countdown when starting the countdown() proc.
*		target_delay - Variable used in reset_lam(), limits targetting/firing actions in short succession.
*/
/obj/machinery/sci_bombardment
	name = "Lavaland Artillery Mainframe"
	desc = "A machine consisting of Bluespace relays and a targetting mechanism, the L.A.M. tracks signals visible on nearby planetary bodies. Modern advancements to the Bluespace guidance system makes it significantly more accurate than its predecessor, the Lavaland Instantaneous Geotracking Missile Armament.\n"
	icon = 'icons/obj/machines/lam.dmi'
	icon_state = "LAM_Base"
	light_color = LIGHT_COLOR_PINK
	use_power = IDLE_POWER_USE
	idle_power_usage = 500
	active_power_usage = 5000
	power_channel = EQUIP
	density = TRUE
	verb_say = "states coldly"
	var/countdown = 30
	var/mincount = 15
	var/target_delay = FALSE
	var/locked = TRUE
	var/stopcount = TRUE
	var/tick = 0
	var/obj/item/transfer_valve/scibomb //Right here, JC
	var/turf/dest
	var/obj/item/radio/radio
	var/radio_freq = FREQ_SCIENCE
	var/lavaland
	var/tcoords
	var/targetdest = "None"

/obj/machinery/sci_bombardment/Initialize()
	. = ..()
	for(var/Z in 1 to world.maxz) //define Lavaland Z-level
		if(is_mining_level(Z))
			lavaland = Z
			break
	radio = new /obj/item/radio/(src)
	radio.frequency = radio_freq
	update_icon()

/obj/machinery/sci_bombardment/Destroy()
	QDEL_NULL(radio)
	return ..()

/obj/machinery/sci_bombardment/update_icon()
	cut_overlays()
	if(!powered(power_channel))
		add_overlay("LAM_radar0")
		set_light(0)
	else
		add_overlay("LAM_screen[dest && !locked && !target_delay ? "Targ" : "Idle"]")
		add_overlay("LAM_radar[target_delay || locked ? "0" : "1"]")
		set_light(2)
	if(scibomb)
		add_overlay("LAM_hatch")
	return

/obj/machinery/sci_bombardment/attackby(obj/item/transfer_valve/B, mob/user, params)
	if(istype(B, /obj/item/transfer_valve) && B.tank_one && B.tank_two)
		if(!user.transferItemToLoc(B, src))
			return
		if(!scibomb)
			scibomb = B
			playsound(src, 'sound/effects/bin_close.ogg', 100, 1)
			to_chat(usr, span_notice("You load [B] into the firing mechanism."))
			update_icon()
		else
			to_chat(usr, span_warning("There is already a transfer valve loaded in the firing mechanism!"))
	else
		to_chat(usr, span_warning("[B] is refused, as it is invalid or incomplete."))
	return

/**
* Starts countdown sequence for firing the TTV
*
* Subtracts 1 from var/tick every second silently until reaching
* the last 5 seconds. Spawn(10) loops back to the beginning by
* triggering the proc again after 10 deciseconds.
*/
/obj/machinery/sci_bombardment/proc/countdown()
	if(stopcount) //Abort launch
		tick = countdown
		return
	tick -= 1
	if(tick == 0)
		stopcount = TRUE
		tick = countdown
		fire_ttv()
		radio.talk_into(src, "Payload successfully deployed.",)
		use_power = 1
		return
	else if(tick <= 5)
		use_power = 2
		radio.talk_into(src, "[tick]...",)
	playsound(src, 'sound/effects/clock_tick.ogg', 80, 0)
	spawn(10)
		countdown()

/**
* Launches TTV from LAM to turf
*
* Triggered after being called in the last step of countdown().
* Sends the loaded TTV to the Turf selected during ui_act("target"),
* triggers toggle_valve(), and last resets variables to initial state.
*/
/obj/machinery/sci_bombardment/proc/fire_ttv()
	if(!scibomb || !dest)
		return
	playsound(src, 'sound/effects/gravhit.ogg', 80, 0.25)
	playsound(src, 'sound/effects/podwoosh.ogg', 80, 0.25)
	scibomb.forceMove(dest)
	playsound(scibomb, 'sound/effects/bamf.ogg', 95, 0.25, 75, 1, 0, 0, FALSE, TRUE) //Minimum impact sound in the odd event Toxins doesn't send a bomb
	scibomb.toggle_valve()
	dest = initial(dest)
	targetdest = initial(dest)
	tcoords = initial(tcoords)
	scibomb = initial(scibomb)
	update_icon()
	. = TRUE

/**
* Visual proc, temporarily disables interacting
*
* Triggered after the ui_act's "target" and "abort" to
* add a delay between selecting GPS coordinates and
* cancelling a TTV launch.
*/
/obj/machinery/sci_bombardment/proc/reset_lam()
	target_delay = !target_delay
	update_icon()
	if(target_delay)
		spawn(100)
			reset_lam()
	else
		playsound(src, 'sound/items/scanner_match.ogg', 100, 1)
		return

/obj/machinery/sci_bombardment/ui_interact(mob/user, datum/tgui/ui)
	ui = SStgui.try_update_ui(user, src, ui)
	if(!ui)
		ui = new(user, src, "Lam", name)
		ui.open()

/obj/machinery/sci_bombardment/ui_data(mob/user)
	var/list/data = list()
	data["tcoords"] = tcoords
	data["countdown"] = countdown
	data["locked"] = locked
	data["loaded"] = scibomb
	data["stopcount"] = stopcount
	if(locked)
		return data
	if(tcoords)
		data["tcoords"] = tcoords
		data["targetdest"] = targetdest

	var/list/signals = list()
	data["signals"] = list()

	for(var/gps in GLOB.GPS_list)
		var/obj/item/gps/G = gps
		var/turf/pos = get_turf_global(G) // yogs - get_turf_global instead of get_turf
		if(G.emped || !G.tracking || pos.z != lavaland)
			continue
		var/list/signal = list()
		signal["entrytag"] = G.gpstag //GPS name
		signal["coords"] = "[pos.x], [pos.y], [pos.z]"
		signals += list(signal)
	data["signals"] = signals
	return data

/obj/machinery/sci_bombardment/ui_act(action, params)
	if(..())
		return
	switch(action)
		if("lock")//Check for RD/Silicon access. Lock/Unlock console if valid
			if(iscyborg(usr) || isAI(usr))
				locked = !locked
				radio.talk_into(src, "Controls [locked ? "locked" : "unlocked"] by [usr].",)
			else
				var/mob/M = usr
				var/obj/item/card/id/I = M.get_idcard(TRUE)
				if(check_access(I) && (30 in I.access))
					locked = !locked
					radio.talk_into(src, "Controls [locked ? "locked" : "unlocked"] by [I.registered_name].",)
				else
					to_chat(usr, span_warning("Access denied. Please seek assistance from station AI or Research Director."))
			update_icon()
			. = TRUE
		if("count")//Prompts user to change countdown timer (Minimum based on var/mincount)
			if(locked)
				return
			var/a = text2num(stripped_input(usr, "Set a new countdown timer. (Minimum [mincount])", name, mincount))
			countdown = max(a, mincount)
			to_chat(usr, span_notice("Countdown set to [countdown] seconds."))
			. = TRUE
		if("unload")//If unlocked, allows user to remove TTV from the machine, if present
			if(!scibomb || locked)
				return
			if(!stopcount)
				playsound(src, 'sound/misc/box_deploy.ogg', 80, 0.5)
				to_chat(usr, span_warning("It's too late to do that now! There's only [tick] seconds remaining! Abort!"))
				return
			playsound(src, 'sound/machines/blastdoor.ogg', 75, 0)
			to_chat(usr, span_notice("[scibomb] is ejected from the loading chamber."))
			scibomb.forceMove(drop_location())
			scibomb = null
			update_icon()
			. = TRUE
		if("launch")//Transfers var/countdown to var/tick before proc'ing countdown()
			if(locked || target_delay || !scibomb || !dest)
				return
			stopcount = !stopcount
			if (!stopcount)
				radio.talk_into(src, "Beginning launch on coordinates [tcoords]. ETA: [countdown] seconds.",)
				tick = countdown + 1
				countdown()
			else
				radio.talk_into(src, "Launch sequence aborted by [usr]. Adjusting mainframe...",)
				reset_lam()
			. = TRUE
		if("target")//Acknowledges GPS signal selected by user and saves it as place to send TTV
			if(locked || target_delay || !stopcount)
				return
			targetdest = params["targetdest"]
			tcoords = params["tcoords"]
			for(var/gps in GLOB.GPS_list)
				var/obj/item/gps/T = gps
				var/turf/pos = get_turf_global(T) // yogs - get_turf_global instead of get_turf
				if(T.gpstag == targetdest && "[pos.x], [pos.y], [pos.z]" == tcoords)
					dest = pos
					break
			if(!dest)
				radio.talk_into(src, "ERROR: Telemetry mismatch. Isolation of [targetdest] required before trying again. Adjusting mainframe...",)
				targetdest = initial(targetdest)
				tcoords = initial(tcoords)
				. = TRUE
			radio.talk_into(src, "Target set to [targetdest] at coordinates [tcoords]. [tcoords ? "Adjusting mainframe..." : ""]",)
			playsound(src, 'sound/effects/servostep.ogg', 100, 1)
			reset_lam()
			. = TRUE