Lavaboat now doesn't burn you when you ride it over lava (#19405)

* Lavaboat now doesn't burn you when you ride it

* Add some more sanity checks

* don't forget to test your code

* as I was saying

* Cleanups

code/modules/mining/lavaland/loot/tendril_loot.dm

@@ -166,6 +166,8 @@
 	icon = 'icons/obj/lavaland/dragonboat.dmi'
 	held_key_type = /obj/item/oar
 	resistance_flags = LAVA_PROOF | FIRE_PROOF
+	/// The last time we told the user that they can't drive on land, so we don't spam them
+	var/last_message_time = 0
 
 /obj/vehicle/lavaboat/relaymove(mob/user, direction)
 	var/turf/next = get_step(src, direction)
@@ -174,9 +176,24 @@
 	if(istype(next, /turf/simulated/floor/plating/lava/smooth) || istype(current, /turf/simulated/floor/plating/lava/smooth)) //We can move from land to lava, or lava to land, but not from land to land
 		..()
 	else
-		to_chat(user, "<span class='warning'>Boats don't go on land!</span>")
+		if(last_message_time + 1 SECONDS < world.time)
+			to_chat(user, "<span class='warning'>Boats don't go on land!</span>")
+			last_message_time = world.time
 		return FALSE
 
+/obj/vehicle/lavaboat/Destroy()
+	for(var/mob/living/M in buckled_mobs)
+		M.weather_immunities -= "lava"
+	return ..()
+
+/obj/vehicle/lavaboat/user_buckle_mob(mob/living/M, mob/user)
+	M.weather_immunities |= "lava"
+	return ..()
+
+/obj/vehicle/lavaboat/unbuckle_mob(mob/living/buckled_mob, force)
+	. = ..()
+	buckled_mob.weather_immunities -= "lava"
+
 /obj/item/oar
 	name = "oar"
 	icon = 'icons/obj/vehicles.dmi'