Paradise/code/modules/mob/dead/observer/observer.dm

#define GHOST_CAN_REENTER 1
#define GHOST_IS_OBSERVER 2

var/list/image/ghost_darkness_images = list() //this is a list of images for things ghosts should still be able to see when they toggle darkness

/mob/dead/observer
	name = "ghost"
	desc = "It's a g-g-g-g-ghooooost!" //jinkies!
	icon = 'icons/mob/mob.dmi'
	icon_state = "ghost"
	layer = 4
	stat = DEAD
	density = 0
	canmove = 0
	blinded = 0
	anchored = 1	//  don't get pushed around
	invisibility = INVISIBILITY_OBSERVER
	var/can_reenter_corpse
	var/bootime = 0
	var/started_as_observer //This variable is set to 1 when you enter the game as an observer.
							//If you died in the game and are a ghsot - this will remain as null.
							//Note that this is not a reliable way to determine if admins started as observers, since they change mobs a lot.
	universal_speak = 1
	var/atom/movable/following = null
	var/image/ghostimage = null //this mobs ghost image, for deleting and stuff
	var/ghostvision = 1 //is the ghost able to see things humans can't?
	var/seedarkness = 1
	var/data_hud_seen = 0 //this should one of the defines in __DEFINES/hud.dm

/mob/dead/observer/New(var/mob/body=null, var/flags=1)
	sight |= SEE_TURFS | SEE_MOBS | SEE_OBJS | SEE_SELF
	see_invisible = SEE_INVISIBLE_OBSERVER_AI_EYE
	see_in_dark = 100
	verbs += /mob/dead/observer/proc/dead_tele

	// Our new boo spell.
	AddSpell(new /obj/effect/proc_holder/spell/aoe_turf/boo(null))

	can_reenter_corpse = flags & GHOST_CAN_REENTER
	started_as_observer = flags & GHOST_IS_OBSERVER


	stat = DEAD

	var/turf/T
	if(ismob(body))
		T = get_turf(body)				//Where is the body located?
		attack_log = body.attack_log	//preserve our attack logs by copying them to our ghost

		if(ishuman(body))
			var/mob/living/carbon/human/H = body
			icon = H.stand_icon
			overlays = H.overlays_standing
		else
			icon = body.icon
			icon_state = body.icon_state
			overlays = body.overlays

		alpha = 127
		gender = body.gender
		if(body.mind && body.mind.name)
			name = body.mind.name
		else
			if(body.real_name)
				name = body.real_name
			else
				if(gender == MALE)
					name = capitalize(pick(first_names_male)) + " " + capitalize(pick(last_names))
				else
					name = capitalize(pick(first_names_female)) + " " + capitalize(pick(last_names))

		mind = body.mind	//we don't transfer the mind but we keep a reference to it.

	ghostimage = image(icon = icon, loc = src, icon_state = icon_state)
	ghostimage.overlays = overlays
	ghostimage.dir = dir
	ghostimage.appearance_flags |= KEEP_TOGETHER
	ghostimage.alpha = alpha
	appearance_flags |= KEEP_TOGETHER
	ghost_darkness_images |= ghostimage
	updateallghostimages()
	if(!T)	T = pick(latejoin)			//Safety in case we cannot find the body's position
	forceMove(T)

	if(!name)							//To prevent nameless ghosts
		name = capitalize(pick(first_names_male)) + " " + capitalize(pick(last_names))
	real_name = name
	..()

/mob/dead/observer/Destroy()
	if(ismob(following))
		var/mob/M = following
		M.following_mobs -= src
	following = null
	if(ghostimage)
		ghost_darkness_images -= ghostimage
		QDEL_NULL(ghostimage)
		updateallghostimages()
	return ..()

/mob/dead/CanPass(atom/movable/mover, turf/target, height=0)
	return 1


/*
Transfer_mind is there to check if mob is being deleted/not going to have a body.
Works together with spawning an observer, noted above.
*/
/mob/dead/observer/Life(seconds, times_fired)
	..()
	if(!loc) return
	if(!client) return 0



/mob/dead/proc/assess_targets(list/target_list, mob/dead/observer/U)
	var/client/C = U.client
	for(var/mob/living/carbon/human/target in target_list)
		C.images += target.hud_list[SPECIALROLE_HUD]
		//C.images += target.hud_list[NATIONS_HUD]
	for(var/mob/living/silicon/target in target_list)
		C.images += target.hud_list[SPECIALROLE_HUD]
		//C.images += target.hud_list[NATIONS_HUD]

	return 1

/mob/proc/ghostize(var/flags = GHOST_CAN_REENTER)
	if(key)
		if(non_respawnable_keys[ckey])
			flags &= ~GHOST_CAN_REENTER
		var/mob/dead/observer/ghost = new(src, flags)	//Transfer safety to observer spawning proc.
		ghost.timeofdeath = src.timeofdeath //BS12 EDIT
		respawnable_list -= src
		if(ghost.can_reenter_corpse)
			respawnable_list += ghost
		else
			non_respawnable_keys[ckey] = 1
		ghost.key = key
		if(!(ghost.client && ghost.client.holder) && !config.antag_hud_allowed)    // For new ghosts we remove the verb from even showing up if it's not allowed.
			ghost.verbs -= /mob/dead/observer/verb/toggle_antagHUD  // Poor guys, don't know what they are missing!
		return ghost

/*
This is the proc mobs get to turn into a ghost. Forked from ghostize due to compatibility issues.
*/
/mob/living/verb/ghost()
	set category = "OOC"
	set name = "Ghost"
	set desc = "Relinquish your life and enter the land of the dead."

	var/mob/M = src
	var/warningmsg = null
	var/obj/machinery/cryopod/P = istype(loc, /obj/machinery/cryopod) && loc

	if(P)
		if(TOO_EARLY_TO_GHOST)
			warningmsg = "It's too early in the shift to enter cryo"
		// If it's not too early, we'll skip straight to ghosting out without penalty
	else if(suiciding && TOO_EARLY_TO_GHOST)
		warningmsg = "You have committed suicide too early in the round"
	else if(stat != DEAD)
		warningmsg = "You are alive"
	else if(non_respawnable_keys[ckey])
		warningmsg = "You have lost your right to respawn"

	if(!warningmsg)
		ghostize(1)
	else
		var/response
		var/alertmsg = "Are you -sure- you want to ghost?\n([warningmsg]. If you ghost now, you probably won't be able to rejoin the round! You can't change your mind, so choose wisely!)"
		response = alert(src, alertmsg,"Are you sure you want to ghost?","Stay in body","Ghost")
		if(response != "Ghost")
			return	//didn't want to ghost after-all
		resting = 1
		var/mob/dead/observer/ghost = ghostize(0)            //0 parameter is so we can never re-enter our body, "Charlie, you can never come baaaack~" :3
		ghost.timeofdeath = world.time // Because the living mob won't have a time of death and we want the respawn timer to work properly.
	var/obj/structure/morgue/Morgue = locate() in M.loc
	if(istype(M.loc, /obj/structure/morgue))
		Morgue = M.loc
	if(Morgue)
		Morgue.update()
	if(P)
		if(!P.control_computer)
			P.find_control_computer(urgent=1)
		if(P.control_computer)
			P.despawn_occupant()
	return


/mob/dead/observer/Move(NewLoc, direct)
	following = null
	dir = direct
	ghostimage.dir = dir
	if(NewLoc)
		forceMove(NewLoc)
		return
	forceMove(get_turf(src)) //Get out of closets and such as a ghost
	if((direct & NORTH) && y < world.maxy)
		y++
	else if((direct & SOUTH) && y > 1)
		y--
	if((direct & EAST) && x < world.maxx)
		x++
	else if((direct & WEST) && x > 1)
		x--

	for(var/obj/effect/step_trigger/S in locate(x, y, z))	//<-- this is dumb
		S.Crossed(src)

	var/area/A = get_area_master(src)
	if(A)
		A.Entered(src)

	..()

/mob/dead/observer/experience_pressure_difference()
	return 0

/mob/dead/observer/can_use_hands()	return 0

/mob/dead/observer/Stat()
	..()
	statpanel("Status")
	if(client.statpanel == "Status")
		show_stat_station_time()
		show_stat_emergency_shuttle_eta()
		stat(null, "Respawnability: [(src in respawnable_list) ? "Yes" : "No"]")

/mob/dead/observer/verb/reenter_corpse()
	set category = "Ghost"
	set name = "Re-enter Corpse"
	if(!client)
		return
	if(!mind || QDELETED(mind.current))
		to_chat(src, "<span class='warning'>You have no body.</span>")
		return
	if(!can_reenter_corpse)
		to_chat(src, "<span class='warning'>You cannot re-enter your body.</span>")
		return
	if(mind.current.key && copytext(mind.current.key,1,2)!="@")	//makes sure we don't accidentally kick any clients
		to_chat(usr, "<span class='warning'>Another consciousness is in your body...It is resisting you.</span>")
		return

	mind.current.key = key

	var/obj/structure/morgue/Morgue = locate() in mind.current.loc
	if(istype(mind.current.loc,/obj/structure/morgue))
		Morgue = mind.current.loc
	if(Morgue)
		Morgue.update()

	return 1


/mob/dead/observer/proc/notify_cloning(var/message, var/sound, var/atom/source)
	if(message)
		to_chat(src, "<span class='ghostalert'>[message]</span>")
		if(source)
			var/obj/screen/alert/A = throw_alert("\ref[source]_notify_cloning", /obj/screen/alert/notify_cloning)
			if(A)
				if(client && client.prefs && client.prefs.UI_style)
					A.icon = ui_style2icon(client.prefs.UI_style)
				A.desc = message
				var/old_layer = source.layer
				var/old_plane = source.plane
				source.layer = FLOAT_LAYER
				source.plane = FLOAT_PLANE
				A.overlays += source
				source.layer = old_layer
				source.plane = old_plane
	to_chat(src, "<span class='ghostalert'><a href=?src=[UID()];reenter=1>(Click to re-enter)</a></span>")
	if(sound)
		src << sound(sound)

/mob/dead/observer/proc/show_me_the_hud(hud_index)
	var/datum/atom_hud/H = huds[hud_index]
	H.add_hud_to(src)
	data_hud_seen = hud_index

/mob/dead/observer/verb/toggle_medHUD()
	set category = "Ghost"
	set name = "Toggle Medic/Sec/DiagHUD"
	set desc = "Toggles the medical HUD."
	if(!client)
		return
	if(data_hud_seen) //remove old huds
		var/datum/atom_hud/H = huds[data_hud_seen]
		H.remove_hud_from(src)

	switch(data_hud_seen) //give new huds
		if(0)
			show_me_the_hud(DATA_HUD_SECURITY_ADVANCED)
			to_chat(src, "<span class='notice'>Security HUD set.</span>")
		if(DATA_HUD_SECURITY_ADVANCED)
			show_me_the_hud(DATA_HUD_MEDICAL_ADVANCED)
			to_chat(src, "<span class='notice'>Medical HUD set.</span>")
		if(DATA_HUD_MEDICAL_ADVANCED)
			show_me_the_hud(DATA_HUD_DIAGNOSTIC)
			to_chat(src, "<span class='notice'>Diagnostic HUD set.</span>")
		if(DATA_HUD_DIAGNOSTIC)
			data_hud_seen = 0
			to_chat(src, "<span class='notice'>HUDs disabled.</span>")


/mob/dead/observer/verb/toggle_antagHUD()
	set category = "Ghost"
	set name = "Toggle AntagHUD"
	set desc = "Toggles AntagHUD allowing you to see who is the antagonist"
	if(!config.antag_hud_allowed && !client.holder)
		to_chat(src, "<span class='warning'>Admins have disabled this for this round.</span>")
		return
	if(!client)
		return
	var/mob/dead/observer/M = src
	if(jobban_isbanned(M, "AntagHUD"))
		to_chat(src, "<span class='danger'>You have been banned from using this feature</span>")
		return
	if(config.antag_hud_restricted && !M.has_enabled_antagHUD && !check_rights(R_ADMIN|R_MOD,0))
		var/response = alert(src, "If you turn this on, you will not be able to take any part in the round.","Are you sure you want to turn this feature on?","Yes","No")
		if(response == "No") return
		M.can_reenter_corpse = 0
		if(M in respawnable_list)
			respawnable_list -= M
	if(!M.has_enabled_antagHUD && !check_rights(R_ADMIN|R_MOD,0))
		M.has_enabled_antagHUD = 1

	//var/datum/atom_hud/A = huds[DATA_HUD_SECURITY_ADVANCED]
	//var/adding_hud = (usr in A.hudusers) ? 0 : 1

	for(var/datum/atom_hud/antag/H in (huds))
		if(!M.antagHUD)
			H.add_hud_to(usr)
		else
			H.remove_hud_from(usr)
	if(!M.antagHUD)
		to_chat(usr, "AntagHud Toggled ON")
		M.antagHUD = 1
	else
		to_chat(usr, "AntagHud Toggled OFF")
		M.antagHUD = 0

/mob/dead/observer/proc/dead_tele(A in ghostteleportlocs)
	set category = "Ghost"
	set name = "Teleport"
	set desc= "Teleport to a location"

	if(!isobserver(usr))
		to_chat(usr, "Not when you're not dead!")
		return

	usr.verbs -= /mob/dead/observer/proc/dead_tele
	spawn(30)
		usr.verbs += /mob/dead/observer/proc/dead_tele

	var/area/thearea = ghostteleportlocs[A]
	if(!thearea)	return

	var/list/L = list()
	for(var/turf/T in get_area_turfs(thearea.type))
		L += T

	if(!L || !L.len)
		to_chat(usr, "<span class='warning'>No area available.</span>")

	usr.forceMove(pick(L))
	following = null

/mob/dead/observer/verb/follow(input in getmobs())
	set category = "Ghost"
	set name = "Follow" // "Haunt"
	set desc = "Follow and haunt a mob."

	var/target = getmobs()[input]
	if(!target) return
	ManualFollow(target)

// This is the ghost's follow verb with an argument
/mob/dead/observer/proc/ManualFollow(var/atom/movable/target)
	if(!target)
		return

	if(!get_turf(target))
		return

	if(target != src)
		if(following && following == target)
			return
		following = target
		to_chat(src, "<span class='notice'>Now following [target]</span>")
		if(ismob(target))
			forceMove(get_turf(target))
			var/mob/M = target
			M.following_mobs += src
		else
			spawn(0)
				while(target && following == target && client)
					var/turf/T = get_turf(target)
					if(!T)
						break
					// To stop the ghost flickering.
					if(loc != T)
						forceMove(T)
					sleep(15)

/mob/proc/update_following()
	. = get_turf(src)
	for(var/mob/dead/observer/M in following_mobs)
		if(M.following != src)
			following_mobs -= M
		else
			if(M.loc != .)
				M.forceMove(.)

/mob
	var/list/following_mobs = list()

/mob/Move()
	. = ..()
	if(.)
		update_following()

/mob/Life(seconds, times_fired)
	// to catch teleports etc which directly set loc
	update_following()
	return ..()

/mob/dead/observer/verb/jumptomob(target in getmobs()) //Moves the ghost instead of just changing the ghosts's eye -Nodrak
	set category = "Ghost"
	set name = "Jump to Mob"
	set desc = "Teleport to a mob"

	if(istype(usr, /mob/dead/observer)) //Make sure they're an observer!

		if(!target)//Make sure we actually have a target
			return
		else
			var/mob/M = getmobs()[target] //Destination mob
			var/turf/T = get_turf(M) //Turf of the destination mob

			if(T && isturf(T))	//Make sure the turf exists, then move the source to that destination.
				forceMove(T)
				following = null
			else
				to_chat(src, "This mob is not located in the game world.")


/* Now a spell.  See spells.dm
/mob/dead/observer/verb/boo()
	set category = "Ghost"
	set name = "Boo!"
	set desc= "Scare your crew members because of boredom!"

	if(bootime > world.time) return
	bootime = world.time + 600
	var/obj/machinery/light/L = locate(/obj/machinery/light) in view(1, src)
	if(L)
		L.flicker()
	//Maybe in the future we can add more <i>spooky</i> code here!
	return
*/

/mob/dead/observer/memory()
	set hidden = 1
	to_chat(src, "<span class='warning'>You are dead! You have no mind to store memory!</span>")

/mob/dead/observer/add_memory()
	set hidden = 1
	to_chat(src, "<span class='warning'>You are dead! You have no mind to store memory!</span>")

/mob/dead/observer/verb/analyze_air()
	set name = "Analyze Air"
	set category = "Ghost"

	if(!istype(usr, /mob/dead/observer)) return

	// Shamelessly copied from the Gas Analyzers
	if(!( istype(usr.loc, /turf) ))
		return

	var/datum/gas_mixture/environment = usr.loc.return_air()

	var/pressure = environment.return_pressure()
	var/total_moles = environment.total_moles()

	to_chat(src, "<span class='boldnotice'>Results:</span>")
	if(abs(pressure - ONE_ATMOSPHERE) < 10)
		to_chat(src, "<span class='notice'>Pressure: [round(pressure,0.1)] kPa</span>")
	else
		to_chat(src, "<span class='warning'>Pressure: [round(pressure,0.1)] kPa</span>")
	if(total_moles)
		var/o2_concentration = environment.oxygen/total_moles
		var/n2_concentration = environment.nitrogen/total_moles
		var/co2_concentration = environment.carbon_dioxide/total_moles
		var/plasma_concentration = environment.toxins/total_moles

		var/unknown_concentration =  1-(o2_concentration+n2_concentration+co2_concentration+plasma_concentration)
		if(abs(n2_concentration - N2STANDARD) < 20)
			to_chat(src, "<span class='notice'>Nitrogen: [round(n2_concentration*100)]% ([round(environment.nitrogen,0.01)] moles)</span>")
		else
			to_chat(src, "<span class='warning'>Nitrogen: [round(n2_concentration*100)]% ([round(environment.nitrogen,0.01)] moles)</span>")

		if(abs(o2_concentration - O2STANDARD) < 2)
			to_chat(src, "<span class='notice'>Oxygen: [round(o2_concentration*100)]% ([round(environment.oxygen,0.01)] moles)</span>")
		else
			to_chat(src, "<span class='warning'>Oxygen: [round(o2_concentration*100)]% ([round(environment.oxygen,0.01)] moles)</span>")

		if(co2_concentration > 0.01)
			to_chat(src, "<span class='warning'>CO2: [round(co2_concentration*100)]% ([round(environment.carbon_dioxide,0.01)] moles)</span>")
		else
			to_chat(src, "<span class='notice'>CO2: [round(co2_concentration*100)]% ([round(environment.carbon_dioxide,0.01)] moles)</span>")

		if(plasma_concentration > 0.01)
			to_chat(src, "<span class='warning'>Plasma: [round(plasma_concentration*100)]% ([round(environment.toxins,0.01)] moles)</span>")

		if(unknown_concentration > 0.01)
			to_chat(src, "<span class='warning'>Unknown: [round(unknown_concentration*100)]% ([round(unknown_concentration*total_moles,0.01)] moles)</span>")

		to_chat(src, "<span class='notice'>Temperature: [round(environment.temperature-T0C,0.1)]&deg;C</span>")
		to_chat(src, "<span class='notice'>Heat Capacity: [round(environment.heat_capacity(),0.1)]</span>")

/mob/dead/observer/verb/view_manifest()
	set name = "View Crew Manifest"
	set category = "Ghost"

	var/dat
	dat += "<h4>Crew Manifest</h4>"
	dat += data_core.get_manifest()

	src << browse(dat, "window=manifest;size=370x420;can_close=1")

//this is called when a ghost is drag clicked to something.
/mob/dead/observer/MouseDrop(atom/over)
	if(!usr || !over) return
	if(isobserver(usr) && usr.client && usr.client.holder)
		if(usr.client.holder.cmd_ghost_drag(src,over))
			return

	return ..()

/proc/ghost_follow_link(var/atom/target, var/atom/ghost)
	if((!target) || (!ghost)) return
	if(isAI(target)) // AI core/eye follow links
		var/mob/living/silicon/ai/A = target
		. = "<a href='byond://?src=[ghost.UID()];follow=\ref[A]'>core</a>"
		if(A.client && A.eyeobj) // No point following clientless AI eyes
			. += "|<a href='byond://?src=[ghost.UID()];follow=\ref[A.eyeobj]'>eye</a>"
		return
	else if(istype(target, /mob/dead/observer))
		var/mob/dead/observer/O = target
		. = "<a href='byond://?src=[ghost.UID()];follow=\ref[target]'>follow</a>"
		if(O.mind && O.mind.current)
			. += "|<a href='byond://?src=[ghost.UID()];follow=\ref[O.mind.current]'>body</a>"
		return
	else
		return "<a href='byond://?src=[ghost.UID()];follow=\ref[target]'>follow</a>"

//BEGIN TELEPORT HREF CODE
/mob/dead/observer/Topic(href, href_list)
	if(usr != src)
		return
		..()

	if(href_list["track"])
		var/atom/target = locate(href_list["track"])
		if(target)
			ManualFollow(target)

	if(href_list["follow"])
		var/atom/target = locate(href_list["follow"])
		if(target)
			ManualFollow(target)

	if(href_list["jump"])
		var/mob/target = locate(href_list["jump"])
		var/mob/A = usr;
		to_chat(A, "Teleporting to [target]...")
		//var/mob/living/silicon/ai/A = locate(href_list["track2"]) in mob_list
		if(target && target != usr)
			spawn(0)
				var/turf/pos = get_turf(A)
				var/turf/T=get_turf(target)
				if(T != pos)
					if(!T)
						return
					if(!client)
						return
					forceMove(T)
				following = null

	if(href_list["reenter"])
		reenter_corpse()

	..()
//END TELEPORT HREF CODE

/mob/dead/observer/verb/toggle_anonsay()
	set name = "Toggle Anonymous Dead-chat"
	set category = "Ghost"
	set desc = "Toggles showing your key in dead chat."
	client.prefs.ghost_anonsay = !client.prefs.ghost_anonsay
	to_chat(src, "As a ghost, your key will [(client.prefs.ghost_anonsay) ? "no longer" : "now"] be shown when you speak in dead chat.</span>")
	client.prefs.save_preferences(src)

/mob/dead/observer/verb/toggle_ghostsee()
	set name = "Toggle Ghost Vision"
	set desc = "Toggles your ability to see things only ghosts can see, like other ghosts"
	set category = "Ghost"
	ghostvision = !(ghostvision)
	updateghostsight()
	to_chat(usr, "You [(ghostvision?"now":"no longer")] have ghost vision.")

/mob/dead/observer/verb/toggle_darkness()
	set name = "Toggle Darkness"
	set category = "Ghost"
	seedarkness = !(seedarkness)
	updateghostsight()

/mob/dead/observer/proc/updateghostsight()
	if(!seedarkness)
		see_invisible = SEE_INVISIBLE_OBSERVER_NOLIGHTING
	else
		see_invisible = SEE_INVISIBLE_OBSERVER
		if(!ghostvision)
			see_invisible = SEE_INVISIBLE_LIVING;
	updateghostimages()

/proc/updateallghostimages()
	for(var/mob/dead/observer/O in player_list)
		O.updateghostimages()

/mob/dead/observer/proc/updateghostimages()
	if(!client)
		return
	if(seedarkness || !ghostvision)
		client.images -= ghost_darkness_images
	else
		//add images for the 60inv things ghosts can normally see when darkness is enabled so they can see them now
		client.images |= ghost_darkness_images
		if(ghostimage)
			client.images -= ghostimage //remove ourself

/mob/proc/can_admin_interact()
	return FALSE

/mob/proc/can_advanced_admin_interact()
	return FALSE

/mob/dead/observer/can_admin_interact()
	return check_rights(R_ADMIN, 0, src)

/mob/dead/observer/can_advanced_admin_interact()
	if(!can_admin_interact())
		return FALSE

	if(client && client.advanced_admin_interaction)
		return TRUE

	return FALSE

/mob/dead/observer/incapacitated(ignore_restraints = FALSE, ignore_grab = FALSE, ignore_lying = FALSE)
	return TRUE

//this is a mob verb instead of atom for performance reasons
//see /mob/verb/examinate() in mob.dm for more info
//overriden here and in /mob/living for different point span classes and sanity checks
/mob/dead/observer/pointed(atom/A as mob|obj|turf in view())
	if(!..())
		return 0
	usr.visible_message("<span class='deadsay'><b>[src]</b> points to [A].</span>")
	return 1

/mob/dead/observer/proc/incarnate_ghost()
	if(!client)
		return
	var/mob/living/carbon/human/new_char = new(get_turf(src))
	client.prefs.copy_to(new_char)
	if(mind)
		mind.active = 1
		mind.transfer_to(new_char)
	else
		new_char.key = key