From e1fd4cc80ff600f41bd9bf76cf06f30255dd6838 Mon Sep 17 00:00:00 2001
From: Heroman3003 <31296024+Heroman3003@users.noreply.github.com>
Date: Thu, 11 Apr 2019 09:54:25 +1000
Subject: [PATCH] Allows restriction of z-levels from spawning xenoarch finds

---
 code/__defines/map.dm                   | 1 +
 code/controllers/subsystems/xenoarch.dm | 2 +-
 maps/~map_system/maps.dm                | 2 ++
 3 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/code/__defines/map.dm b/code/__defines/map.dm
index 13b1bfd795..7d0f3706af 100644
--- a/code/__defines/map.dm
+++ b/code/__defines/map.dm
@@ -6,6 +6,7 @@
 #define MAP_LEVEL_SEALED		0x010 // Z-levels that don't allow random transit at edge
 #define MAP_LEVEL_EMPTY			0x020 // Empty Z-levels that may be used for various things (currently used by bluespace jump)
 #define MAP_LEVEL_CONSOLES		0x040 // Z-levels available to various consoles, such as the crew monitor (when that gets coded in). Defaults to station_levels if unset.
+#define MAP_LEVEL_XENOARCH_EXEMPT 0x080	// Z-levels exempt from xenoarch digsite generation.
 
 // Misc map defines.
 #define SUBMAP_MAP_EDGE_PAD 15 // Automatically created submaps are forbidden from being this close to the main map's edge.
\ No newline at end of file
diff --git a/code/controllers/subsystems/xenoarch.dm b/code/controllers/subsystems/xenoarch.dm
index 7f3e292c1a..d863ad8269 100644
--- a/code/controllers/subsystems/xenoarch.dm
+++ b/code/controllers/subsystems/xenoarch.dm
@@ -31,7 +31,7 @@ SUBSYSTEM_DEF(xenoarch)
 
 /datum/controller/subsystem/xenoarch/proc/SetupXenoarch()
 	for(var/turf/simulated/mineral/M in turfs)
-		if(!M.density)
+		if(!M.density || M.z in using_map.xenoarch_exempt_levels)
 			continue
 
 		if(isnull(M.geologic_data))
diff --git a/maps/~map_system/maps.dm b/maps/~map_system/maps.dm
index fb695a52a6..490f4eab8e 100644
--- a/maps/~map_system/maps.dm
+++ b/maps/~map_system/maps.dm
@@ -30,6 +30,7 @@ var/list/all_maps = list()
 	var/list/contact_levels = list() // Z-levels that can be contacted from the station, for eg announcements
 	var/list/player_levels = list()  // Z-levels a character can typically reach
 	var/list/sealed_levels = list()  // Z-levels that don't allow random transit at edge
+	var/list/xenoarch_exempt_levels = list()	//Z-levels exempt from xenoarch finds and digsites spawning.
 	var/list/empty_levels = null     // Empty Z-levels that may be used for various things (currently used by bluespace jump)
 
 	var/list/map_levels              // Z-levels available to various consoles, such as the crew monitor (when that gets coded in). Defaults to station_levels if unset.
@@ -178,6 +179,7 @@ var/list/all_maps = list()
 	if(flags & MAP_LEVEL_CONTACT) map.contact_levels += z
 	if(flags & MAP_LEVEL_PLAYER) map.player_levels += z
 	if(flags & MAP_LEVEL_SEALED) map.sealed_levels += z
+	if(flags & MAP_LEVEL_XENOARCH_EXEMPT) map.xenoarch_exempt_levels += z
 	if(flags & MAP_LEVEL_EMPTY)
 		if(!map.empty_levels) map.empty_levels = list()
 		map.empty_levels += z