Refactors is_hot and fixes some issues from the beaker lighting PR (#22964)

* Idk what I'm doing

* The is_hot refactor

* Fixes that I forgot to push before making the PR

* Update code/game/objects/items.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Contra review

* TODO: Find out why this isn't working

* Removes the signal stuff for now, this works

* Fixes it all

* Add new signal

* Update code/_onclick/item_attack.dm

Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

* Contra reivew

* Ayyy it works

* Merge master

* Forgot this one

* Update code/game/machinery/doors/airlock_types.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Update code/game/objects/structures/mineral_doors.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Update code/game/turfs/simulated/floor/mineral_floors.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

* Update code/game/turfs/simulated/walls_mineral.dm

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>

---------

Co-authored-by: Burzah <116982774+Burzah@users.noreply.github.com>
Co-authored-by: Contrabang <91113370+Contrabang@users.noreply.github.com>

code/modules/assembly/igniter.dm

@@ -59,3 +59,6 @@
 	if(!istype(loc, /obj/item/assembly_holder))
 		activate()
 	add_fingerprint(user)
+
+/obj/item/assembly/igniter/get_heat()
+	return 2000

code/modules/food_and_drinks/drinks/drinks/bottle.dm

@@ -372,7 +372,7 @@
 		new /obj/effect/hotspot(get_turf(target))
 
 /obj/item/reagent_containers/food/drinks/bottle/molotov/attackby(obj/item/I, mob/user, params)
-	if(is_hot(I) && !active)
+	if(I.get_heat() && !active)
 		active = TRUE
 		var/turf/bombturf = get_turf(src)
 		var/area/bombarea = get_area(bombturf)

code/modules/food_and_drinks/drinks/drinks/shotglass.dm

@@ -98,7 +98,7 @@
 
 /obj/item/reagent_containers/food/drinks/drinkingglass/shotglass/attackby(obj/item/W)
 	..()
-	if(is_hot(W))
+	if(W.get_heat())
 		fire_act()
 
 /obj/item/reagent_containers/food/drinks/drinkingglass/shotglass/attack_hand(mob/user, pickupfireoverride = TRUE)

code/modules/hydroponics/grown/towercap.dm

@@ -137,7 +137,7 @@
 		to_chat(user, "<span class='italics'>You add a rod to [src].")
 		var/image/U = image(icon='icons/obj/hydroponics/equipment.dmi',icon_state="bonfire_rod",pixel_y=16)
 		underlays += U
-	if(is_hot(W))
+	if(W.get_heat())
 		lighter = user.ckey
 		user.create_log(MISC_LOG, "lit a bonfire", src)
 		StartBurning()

code/modules/mob/living/carbon/human/species/golem.dm

@@ -761,6 +761,6 @@
 	if(resistance_flags & ON_FIRE)
 		return
 
-	if(is_hot(P))
+	if(P.get_heat())
 		visible_message("<span class='danger'>[src] bursts into flames!</span>")
 		fire_act()

code/modules/paperwork/paper.dm

@@ -460,7 +460,7 @@
 		to_chat(user, "<span class='notice'>You stamp the paper with your rubber stamp.</span>")
 		playsound(user, 'sound/items/handling/standard_stamp.ogg', 50, vary = TRUE)
 
-	if(is_hot(P))
+	if(P.get_heat())
 		if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(10))
 			user.visible_message("<span class='warning'>[user] accidentally ignites [user.p_themselves()]!</span>", \
 								"<span class='userdanger'>You miss the paper and accidentally light yourself on fire!</span>")

code/modules/paperwork/paper_bundle.dm

@@ -53,7 +53,7 @@
 		to_chat(user, "<span class='notice'>You add [(W.name == "photo") ? "the photo" : W.name] to [(src.name == "paper bundle") ? "the paper bundle" : src.name].</span>")
 		user.unEquip(W)
 		W.loc = src
-	else if(is_hot(W))
+	else if(W.get_heat())
 		burnpaper(W, user)
 	else if(istype(W, /obj/item/paper_bundle))
 		user.unEquip(W)
@@ -85,7 +85,7 @@
 
 	user.visible_message("<span class='[class]'>[user] holds [heating_object] up to [src], it looks like [user.p_theyre()] trying to burn it!</span>", "<span class='[class]'>You hold [heating_object] up to [src], burning it slowly.</span>")
 
-	if(!do_after(user, 2 SECONDS, target = src) || !is_hot(heating_object))
+	if(!do_after(user, 2 SECONDS, target = src) || !heating_object.get_heat())
 		return
 	user.visible_message("<span class='[class]'>[user] burns right through [src], turning it to ash. It flutters through the air before settling on the floor in a heap.</span>", \
 	"<span class='[class]'>You burn right through [src], turning it to ash. It flutters through the air before settling on the floor in a heap.</span>")

code/modules/paperwork/paperplane.dm

@@ -70,7 +70,7 @@
 		internal_paper.attackby(P, user) //spoofed attack to update internal paper.
 		update_icon()
 
-	else if(is_hot(P))
+	else if(P.get_heat())
 		if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(10))
 			user.visible_message("<span class='warning'>[user] accidentally ignites [user.p_themselves()]!</span>", \
 				"<span class='userdanger'>You miss [src] and accidentally light yourself on fire!</span>")

code/modules/paperwork/ticketmachine.dm

@@ -214,7 +214,7 @@
 
 /obj/item/ticket_machine_ticket/attackby(obj/item/P, mob/living/carbon/human/user, params) //Stolen from papercode
 	..()
-	if(is_hot(P))
+	if(P.get_heat())
 		if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(10))
 			user.visible_message("<span class='warning'>[user] accidentally ignites [user.p_themselves()]!</span>", \
 								"<span class='userdanger'>You miss the paper and accidentally light yourself on fire!</span>")

code/modules/projectiles/guns/energy/special_eguns.dm

@@ -190,6 +190,9 @@
 /obj/item/gun/energy/plasmacutter/update_overlays()
 	return list()
 
+/obj/item/gun/energy/plasmacutter/get_heat()
+	return 3800
+
 /obj/item/gun/energy/plasmacutter/adv
 	name = "advanced plasma cutter"
 	icon_state = "adv_plasmacutter"