From 7343464228e7547f6640cf5366aaca8d5cfaf21d Mon Sep 17 00:00:00 2001
From: MrStonedOne <kyleshome@gmail.com>
Date: Wed, 17 Jan 2018 22:13:41 -0800
Subject: [PATCH] Low memory mode

Adds define to run the world in a reduced memory usage mode by skipping the creating of the space zlevels loading only centcom and runtime station. Mainly for lummox.
---
 _maps/_basemap.dm                     | 25 +++++++++++++++++++++++++
 _maps/basemap.dm                      | 19 -------------------
 code/_compile_options.dm              |  3 +++
 code/controllers/subsystem/mapping.dm |  4 ++--
 tgstation.dme                         |  2 +-
 5 files changed, 31 insertions(+), 22 deletions(-)
 create mode 100644 _maps/_basemap.dm
 delete mode 100644 _maps/basemap.dm

diff --git a/_maps/_basemap.dm b/_maps/_basemap.dm
new file mode 100644
index 00000000000..794f57ea58d
--- /dev/null
+++ b/_maps/_basemap.dm
@@ -0,0 +1,25 @@
+//#define LOWMEMORYMODE //uncomment this to load centcom and runtime station and thats it.
+
+#include "map_files\generic\CentCom.dmm"
+#include "map_files\generic\SpaceStation.dmm"
+
+#ifndef LOWMEMORYMODE
+
+	#include "map_files\generic\Space.dmm"
+	#include "map_files\generic\SpaceDock.dmm"
+	#include "map_files\Mining\Lavaland.dmm"
+	#include "map_files\generic\City_of_Cogs.dmm"
+
+	#ifdef ALL_MAPS
+		#include "map_files\debug\runtimestation.dmm"
+		#include "map_files\Deltastation\DeltaStation2.dmm"
+		#include "map_files\MetaStation\MetaStation.dmm"
+		#include "map_files\OmegaStation\OmegaStation.dmm"
+		#include "map_files\PubbyStation\PubbyStation.dmm"
+		#include "map_files\BoxStation\BoxStation.dmm"
+
+		#ifdef TRAVISBUILDING
+			#include "templates.dm"
+		#endif
+	#endif
+#endif
\ No newline at end of file
diff --git a/_maps/basemap.dm b/_maps/basemap.dm
deleted file mode 100644
index 1336200863b..00000000000
--- a/_maps/basemap.dm
+++ /dev/null
@@ -1,19 +0,0 @@
-#include "map_files\generic\CentCom.dmm"
-#include "map_files\generic\SpaceStation.dmm"
-#include "map_files\generic\Space.dmm"
-#include "map_files\generic\SpaceDock.dmm"
-#include "map_files\Mining\Lavaland.dmm"
-#include "map_files\generic\City_of_Cogs.dmm"
-
-#ifdef ALL_MAPS
-#include "map_files\debug\runtimestation.dmm"
-#include "map_files\Deltastation\DeltaStation2.dmm"
-#include "map_files\MetaStation\MetaStation.dmm"
-#include "map_files\OmegaStation\OmegaStation.dmm"
-#include "map_files\PubbyStation\PubbyStation.dmm"
-#include "map_files\BoxStation\BoxStation.dmm"
-
-#ifdef TRAVISBUILDING
-#include "templates.dm"
-#endif
-#endif
\ No newline at end of file
diff --git a/code/_compile_options.dm b/code/_compile_options.dm
index 1c58771f739..ac7b6ab9f9b 100644
--- a/code/_compile_options.dm
+++ b/code/_compile_options.dm
@@ -18,6 +18,9 @@
 #endif							//	1 to use the default behaviour;
 								//	2 for preloading absolutely everything;
 
+#ifdef LOWMEMORYMODE
+#define FORCE_MAP "_maps/runtimestation.json"
+#endif
 
 //Update this whenever you need to take advantage of more recent byond features
 #define MIN_COMPILER_VERSION 511
diff --git a/code/controllers/subsystem/mapping.dm b/code/controllers/subsystem/mapping.dm
index 8046dab41e3..90f3380b814 100644
--- a/code/controllers/subsystem/mapping.dm
+++ b/code/controllers/subsystem/mapping.dm
@@ -42,7 +42,7 @@ SUBSYSTEM_DEF(mapping)
 	repopulate_sorted_areas()
 	process_teleport_locs()			//Sets up the wizard teleport locations
 	preloadTemplates()
-
+#ifndef LOWMEMORYMODE
 	// Create space levels
 	for(var/I in 1 to ZLEVEL_SPACE_RUIN_COUNT)
 		add_new_zlevel("Empty Area [2 + I]", CROSSLINKED, list(ZTRAIT_SPACE_RUINS = TRUE))
@@ -67,7 +67,7 @@ SUBSYSTEM_DEF(mapping)
 	if (space_ruins.len)
 		seedRuins(space_ruins, CONFIG_GET(number/space_budget), /area/space, space_ruins_templates)
 	loading_ruins = FALSE
-
+#endif
 	repopulate_sorted_areas()
 	// Set up Z-level transitions.
 	setup_map_transitions()
diff --git a/tgstation.dme b/tgstation.dme
index 8546db84b52..776157ba32d 100755
--- a/tgstation.dme
+++ b/tgstation.dme
@@ -13,7 +13,7 @@
 // END_PREFERENCES
 
 // BEGIN_INCLUDE
-#include "_maps\basemap.dm"
+#include "_maps\_basemap.dm"
 #include "code\_compile_options.dm"
 #include "code\world.dm"
 #include "code\__DEFINES\_globals.dm"