Port DmIcon & Image components from TG (#26623)

* Port DmIcon & Image components from TG

* Documentation

* Uh oh

* I hate it

* I will bang you

code/modules/asset_cache/asset_list.dm

@@ -5,18 +5,31 @@
 GLOBAL_LIST_EMPTY(asset_datums)
 
 //get an assetdatum or make a new one
-/proc/get_asset_datum(type)
+//does NOT ensure it's filled, if you want that use get_asset_datum()
+/proc/load_asset_datum(type)
 	return GLOB.asset_datums[type] || new type()
 
+/proc/get_asset_datum(type)
+	var/datum/asset/loaded_asset = GLOB.asset_datums[type] || new type()
+	return loaded_asset.ensure_ready()
+
 /datum/asset
 	var/_abstract = /datum/asset
 	var/cached_serialized_url_mappings
 	var/cached_serialized_url_mappings_transport_type
 
+	/// Whether or not this asset should be loaded in the "early assets" SS
+	var/early = FALSE
+
 /datum/asset/New()
 	GLOB.asset_datums[type] = src
 	register()
 
+/// Stub that allows us to react to something trying to get us
+/// Not useful here, more handy for sprite sheets
+/datum/asset/proc/ensure_ready()
+	return src
+
 /datum/asset/proc/get_url_mappings()
 	return list()
 
@@ -26,7 +39,6 @@ GLOBAL_LIST_EMPTY(asset_datums)
 /datum/asset/proc/send(client)
 	return
 
-
 /// If you don't need anything complicated.
 /datum/asset/simple
 	_abstract = /datum/asset/simple
@@ -68,7 +80,7 @@ GLOBAL_LIST_EMPTY(asset_datums)
 
 /datum/asset/group/register()
 	for(var/type in children)
-		get_asset_datum(type)
+		load_asset_datum(type)
 
 /datum/asset/group/send(client/C)
 	for(var/type in children)
@@ -370,6 +382,32 @@ GLOBAL_LIST_EMPTY(asset_datums)
 	assets = sorted_assets
 	..()
 
+/// A subtype to generate a JSON file from a list
+/datum/asset/json
+	_abstract = /datum/asset/json
+	/// The filename, will be suffixed with ".json"
+	var/name
+
+/datum/asset/json/send(client)
+	return SSassets.transport.send_assets(client, "[name].json")
+
+/datum/asset/json/get_url_mappings()
+	return list(
+		"[name].json" = SSassets.transport.get_asset_url("[name].json"),
+	)
+
+/datum/asset/json/register()
+	var/filename = "data/[name].json"
+	fdel(filename)
+	text2file(json_encode(generate()), filename)
+	SSassets.transport.register_asset("[name].json", fcopy_rsc(filename))
+	fdel(filename)
+
+/// Returns the data that will be JSON encoded
+/datum/asset/json/proc/generate()
+	SHOULD_CALL_PARENT(FALSE)
+	CRASH("generate() not implemented for [type]!")
+
 /*
  * Get a html string that will load a html asset.
  * Needed because byond doesn't allow you to browse() to a url.

code/modules/asset_cache/assets/asset_icon_ref_map.dm

@@ -0,0 +1,28 @@
+/// Maps icon names to ref values
+/datum/asset/json/icon_ref_map
+	name = "icon_ref_map"
+	early = TRUE
+
+/datum/asset/json/icon_ref_map/generate()
+	var/list/data = list() //"icons/obj/drinks.dmi" => "[0xc000020]"
+
+	//var/start = "0xc000000"
+	var/value = 0
+
+	while(TRUE)
+		value += 1
+		var/ref = "\[0xc[num2text(value,6,16)]\]"
+		var/mystery_meat = locate(ref)
+
+		if(isicon(mystery_meat))
+			if(!isfile(mystery_meat)) // Ignore the runtime icons for now
+				continue
+			var/path = get_icon_dmi_path(mystery_meat) //Try to get the icon path
+			if(path)
+				data[path] = ref
+		else if(mystery_meat)
+			continue; //Some other non-icon resource, ogg/json/whatever
+		else //Out of resources end this, could also try to end this earlier as soon as runtime generated icons appear but eh
+			break;
+
+	return data

code/modules/asset_cache/assets/asset_prize_counter.dm

@@ -1,13 +0,0 @@
-/datum/asset/spritesheet/prize_counter
-	name = "prize_counter"
-
-/datum/asset/spritesheet/prize_counter/create_spritesheets()
-	for(var/datum/prize_item/prize in GLOB.global_prizes.prizes)
-		var/obj/item/prize_item = prize.typepath
-		var/prize_icon = icon(icon = initial(prize_item.icon), icon_state = initial(prize_item.icon_state))
-		var/imgid = replacetext(replacetext("[prize_item]", "/obj/item/", ""), "/", "-")
-		Insert(imgid, prize_icon)
-
-/datum/asset/spritesheet/prize_counter/ModifyInserted(icon/pre_asset)
-	pre_asset.Scale(64, 64)
-	return pre_asset