element memes

code/datums/datum.dm

@@ -148,13 +148,24 @@
 	to_chat(target, txt_changed_vars())
 #endif
 
-///Return a LIST for serialize_datum to encode! Not the actual json!
+/**
+  * Saves our data into a data list.
+  *
+  * @params
+  * * options - associative list of options to use. Not yet particularly used/standardized, but can be easily implemented.
+  */
 /datum/proc/serialize_list(list/options)
-	CRASH("Attempted to serialize datum [src] of type [type] without serialize_list being implemented!")
+	return
 
-///Accepts a LIST from deserialize_datum. Should return src or another datum.
-/datum/proc/deserialize_list(json, list/options)
-	CRASH("Attempted to deserialize datum [src] of type [type] without deserialize_list being implemented!")
+/**
+  * Takes a data list in and loads data into ourselves. Persistence elements currently use this.
+  *
+  * @params
+  * * data - list of data for us to use
+  * * options - associatve list of options to use. Not yet particularly used/standardized, but can be easily implemented.
+  */
+/datum/proc/deserialize_list(list/data, list/options)
+	return
 
 ///Serializes into JSON. Does not encode type.
 /datum/proc/serialize_json(list/options)

code/datums/elements/persistence.dm

@@ -0,0 +1,60 @@
+/**
+  * Simple object persistence elements
+  * For now, it just attachs and detaches and all objects with it are recorded to disk based on map and stuff at round end
+  * Can expand later for more functionality
+  *
+  * WARNING: All atoms recorded are stored to turf! This does not yet support things like loading into inventories. This is mostly for on-floor objects.
+  */
+/datum/element/persistence
+	flags = ELEMENT_DETACH
+
+	/// List of persistent atoms. Associated list to their GUID
+	var/list/atom/objects = list()
+
+/**
+  * Serializes all objects into a list for json encode or anything else needed.
+  * Includes data the datum includes in serialize_list(), the GUID of the datum's entry, and its turf location.
+  */
+/datum/element/persistence/proc/SerializeAll()
+	. = list()
+	var/atom/A
+	var/guid
+	for(var/i in objects)
+		A = i
+		guid = objects[A]
+		var/turf/location = get_turf(A)
+		if(!A || !guid || !location)
+			continue
+		. += list(A.serialize_list(), guid, list(location.x, location.y, location.z), "[A.type]")
+
+/**
+  * Instantiates all objects from a data list and attaches to them.
+  */
+/datum/element/persistence/proc/DeserializeAndInstantiateAll(list/data)
+	for(var/i in data)
+		var/list/L = i
+		if(!istype(L) || (length(L) < 3))
+			continue
+		var/list/datumdata = L[1]
+		var/guid = L[2]
+		var/coords = L[3]
+		var/datumtype = text2path(L[4])
+		if(!ispath(datumtype))
+			continue
+		var/turf/T = locate(coords[1], coords[2], coords[3])
+		if(!T)
+			continue
+		var/atom/A = new datumtype(T)
+		A.deserialize_list(datumdata)
+		Attach(A, guid)
+
+/datum/element/persistence/Attach(datum/D, guid = GUID())
+	if(!isatom(D))
+		return ELEMENT_INCOMPATIBLE
+	. = ..()
+	if(. == ELEMENT_INCOMPATIBLE)
+		return
+	objects[D] = guid
+
+/datum/element/persistence/Detach(datum/D)
+	objects -= D

vorestation.dme

@@ -322,6 +322,7 @@
 #include "code\datums\components\_component.dm"
 #include "code\datums\components\orbiter.dm"
 #include "code\datums\elements\_element.dm"
+#include "code\datums\elements\persistence.dm"
 #include "code\datums\helper_datums\construction_datum.dm"
 #include "code\datums\helper_datums\events.dm"
 #include "code\datums\helper_datums\getrev.dm"
@@ -2205,6 +2206,7 @@
 #include "code\modules\lore_codex\robutt_data\bybrand.dm"
 #include "code\modules\lore_codex\robutt_data\main_robutts.dm"
 #include "code\modules\lore_codex\robutt_data\more.dm"
+#include "code\modules\mapping\map_config.dm"
 #include "code\modules\mapping\minimaps.dm"
 #include "code\modules\mapping\preloader.dm"
 #include "code\modules\maps\tg\dmm_suite.dm"