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Bubberstation/code/controllers/subsystem/assets.dm
Tad Hardesty cf6f064e21 Use spritesheets to reduce time spent sending PNG assets by 90+% (#37399)
The total number of assets to be sent has been reduced from 1532 to 76, with time between first asset and last going from about 112s to about 7s (a 93% reduction) by my measure. The following assets have been coalesced:

    705 pipe images (used by RPD) -> 1 spritesheet + css
    595 research design icons (used by R&D console) -> 3 spritesheets + css
    116 OOC emoji + 15 language icons -> 1 spritesheet + css
    27 PDA icons -> 1 spritesheet + css
    11 paperwork stamps -> 1 spritesheet + css
2018-05-10 14:34:57 +12:00

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SUBSYSTEM_DEF(assets)
name = "Assets"
init_order = INIT_ORDER_ASSETS
flags = SS_NO_FIRE
var/list/cache = list()
var/list/preload = list()
/datum/controller/subsystem/assets/Initialize(timeofday)
for(var/type in typesof(/datum/asset))
var/datum/asset/A = type
if (type != initial(A._abstract))
get_asset_datum(type)
preload = cache.Copy() //don't preload assets generated during the round
for(var/client/C in GLOB.clients)
addtimer(CALLBACK(GLOBAL_PROC, .proc/getFilesSlow, C, preload, FALSE), 10)
..()