Adds a megafauna_safe_range var to ruin datums and adds a megafauna exclusion zone to ghost spawn ruins on lavaland. (#29120)

* add exclusion check, change area types, update script

* merged the 2 for loops

* removed commented out section

* rename updatepaths script

* var

* undo area and map edits

* add safe var for ruin datums, add megafauna distance check for safe ruins

* removed unneeded file

* rename variable

code/datums/ruins.dm

@@ -7,6 +7,8 @@
 		wooden container filled with 18th century coinage in the middle of a \
 		lavawracked hellscape? It is clearly a mystery."
 
+	/// Prevents megafauna spawning within a certain range of ruins.
+	var/megafauna_safe_range = FALSE
 	var/unpickable = FALSE 	 //If TRUE these won't be placed automatically (can still be forced or loaded with another ruin)
 	var/always_place = FALSE //Will skip the whole weighting process and just plop this down, ideally you want the ruins of this kind to have no cost.
 	var/placement_weight = 1 //How often should this ruin appear

code/datums/ruins/lavaland.dm

@@ -27,6 +27,7 @@
 	suffix = "lavaland_surface_seed_vault.dmm"
 	allow_duplicates = FALSE
 	always_place = TRUE
+	megafauna_safe_range = TRUE
 
 /datum/map_template/ruin/lavaland/seed_vault_eden
 	name = "Garden of Eden"
@@ -44,6 +45,7 @@
 	Probably best to stay clear."
 	suffix = "lavaland_surface_ash_walker1.dmm"
 	allow_duplicates = FALSE
+	megafauna_safe_range = TRUE
 
 /datum/map_template/ruin/lavaland/ash_walker_siege
 	name = "Ash Walker Siege"
@@ -61,6 +63,7 @@
 	suffix = "lavaland_surface_golem_ship.dmm"
 	allow_duplicates = FALSE
 	always_place = TRUE
+	megafauna_safe_range = TRUE
 
 /datum/map_template/ruin/lavaland/althland_facility
 	name = "Althland Facility"
@@ -197,6 +200,7 @@
 	suffix = "lavaland_surface_hermit.dmm"
 	allow_duplicates = FALSE
 	always_place = TRUE
+	megafauna_safe_range = TRUE
 
 /datum/map_template/ruin/lavaland/miningripley
 	name = "Ripley"