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GhomandGitHub 6eb2d1674a Implementing materials checks for techweb designs. (#96257)
## About The Pull Request
In similar fashion to what was done with crafting recipes last year,
this year it's time for techweb designs and printed items to be audited.
This is mostly just about consistency, we've a lot of items that can be
printed by protolathes, autolathes, circuit printers and techfab etc.
However they almost all (except most stacks, mainly) have custom
materials that do not match in one way or another with the materials
used by the design, which is what this PR is for.

"But items printed from lathes etc. already get the mats used to make
them." Yes, they do, however that isn't the case for items of the same
type that were spawned in some other way (cargo shuttle, space/maints
loot, mapped, admins), this create a subtle discrepancy. It isn't a huge
deal (in spite of the size of this PR, ton of designs), but given that I
have done something similar with crafting recipes before, I may as well
give it a second arc of some sort and bring things to completion. And
fix a few possible oversights.

TL;DR consistency and stuff

## Why It's Good For The Game
Consistency, unit test checks to make it harder not to be consistent in
the future. Still has a few TODOs like:

- [x] Fixed newly printed, fully charged RCDs costing less than the RCD
cartridges required to fully charge one. EDIT: I had to tweak the newly
added RDD as well because it suffered from the same fundamental issue.
- [x] Fixed plates being made of iron and yet shattering like ceramic
ones. A new subtype for metallic ones has been made.

## Changelog

🆑
refactor: Refactored a few things with techweb designs (the ones for
autolathes, protolathes, circuit printers, mechfabs etc.) to make sure
that the materials of items that can be made from these designs more
closely match the materials used to make them.
fix: Lizard fries no longer need a plate to be made, like all other
treats that used to require plates in a distant past.
balance: Tweaked the materials cost of RCD, RDD and RCD cartridges.
image: Oven trays now have a more metallic hue.
balance: Plates printed printed from lathes won't shatter like ceramic
ones, in virtue of them being made out of iron instead.
/🆑
2026-07-06 00:13:02 -07:00

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//RAPID DECORATION DEVICE
/// Multiplier applied to cost when using RDD — each decoration costs this many matter units
#define RDD_COST_MULTIPLIER 1
/// All decoration designs available in the RDD
GLOBAL_LIST_INIT(rdd_designs, list(
"Grasses" = list(
list("name" = "Plastic Grass Patch", "path" = /obj/structure/decoration/grass/first),
list("name" = "Plastic Grass Patch (Alt)", "path" = /obj/structure/decoration/grass/second),
list("name" = "Plastic Grass Patch (Alt 2)", "path" = /obj/structure/decoration/grass/third),
list("name" = "Plastic Grass Patch (Random)", "path" = /obj/structure/decoration/grass/style_random),
list("name" = "Plastic Brown Grass", "path" = /obj/structure/decoration/grass/brown/first),
list("name" = "Plastic Brown Grass (Alt)", "path" = /obj/structure/decoration/grass/brown/second),
list("name" = "Plastic Brown Grass (Alt 2)", "path" = /obj/structure/decoration/grass/brown/third),
list("name" = "Plastic Brown Grass (Random)", "path" = /obj/structure/decoration/grass/brown/style_random),
list("name" = "Plastic Jungle Grass", "path" = /obj/structure/decoration/jungle_grass/first),
list("name" = "Plastic Jungle Grass (Alt)", "path" = /obj/structure/decoration/jungle_grass/second),
list("name" = "Plastic Jungle Grass (Alt 2)", "path" = /obj/structure/decoration/jungle_grass/third),
list("name" = "Plastic Jungle Grass (Alt 3)", "path" = /obj/structure/decoration/jungle_grass/fourth),
list("name" = "Plastic Jungle Grass (Alt 4)", "path" = /obj/structure/decoration/jungle_grass/fifth),
list("name" = "Plastic Jungle Grass (Random)", "path" = /obj/structure/decoration/jungle_grass/style_random),
list("name" = "Plastic Jungle Grass B", "path" = /obj/structure/decoration/jungle_grass/b/first),
list("name" = "Plastic Jungle Grass B (Alt)", "path" = /obj/structure/decoration/jungle_grass/b/second),
list("name" = "Plastic Jungle Grass B (Alt 2)", "path" = /obj/structure/decoration/jungle_grass/b/third),
list("name" = "Plastic Jungle Grass B (Alt 3)", "path" = /obj/structure/decoration/jungle_grass/b/fourth),
list("name" = "Plastic Jungle Grass B (Alt 4)", "path" = /obj/structure/decoration/jungle_grass/b/fifth),
list("name" = "Plastic Jungle Grass B (Random)", "path" = /obj/structure/decoration/jungle_grass/b/style_random),
),
"Bushes" = list(
list("name" = "Plastic Bush", "path" = /obj/structure/decoration/bush/first),
list("name" = "Plastic Bush (Alt)", "path" = /obj/structure/decoration/bush/second),
list("name" = "Plastic Bush (Alt 2)", "path" = /obj/structure/decoration/bush/third),
list("name" = "Plastic Bush (Alt 3)", "path" = /obj/structure/decoration/bush/fourth),
list("name" = "Plastic Bush (Random)", "path" = /obj/structure/decoration/bush/style_random),
list("name" = "Plastic Reeds", "path" = /obj/structure/decoration/bush/reed/first),
list("name" = "Plastic Reeds (Alt)", "path" = /obj/structure/decoration/bush/reed/second),
list("name" = "Plastic Reeds (Alt 2)", "path" = /obj/structure/decoration/bush/reed/third),
list("name" = "Plastic Reeds (Alt 3)", "path" = /obj/structure/decoration/bush/reed/fourth),
list("name" = "Plastic Reeds (Random)", "path" = /obj/structure/decoration/bush/reed/style_random),
list("name" = "Plastic Leafy Bush", "path" = /obj/structure/decoration/bush/leafy/first),
list("name" = "Plastic Leafy Bush (Alt)", "path" = /obj/structure/decoration/bush/leafy/second),
list("name" = "Plastic Leafy Bush (Alt 2)", "path" = /obj/structure/decoration/bush/leafy/third),
list("name" = "Plastic Leafy Bush (Random)", "path" = /obj/structure/decoration/bush/leafy/style_random),
list("name" = "Plastic Pale Bush", "path" = /obj/structure/decoration/bush/pale/first),
list("name" = "Plastic Pale Bush (Alt)", "path" = /obj/structure/decoration/bush/pale/second),
list("name" = "Plastic Pale Bush (Alt 2)", "path" = /obj/structure/decoration/bush/pale/third),
list("name" = "Plastic Pale Bush (Alt 3)", "path" = /obj/structure/decoration/bush/pale/fourth),
list("name" = "Plastic Pale Bush (Random)", "path" = /obj/structure/decoration/bush/pale/style_random),
list("name" = "Plastic Stalky Bush", "path" = /obj/structure/decoration/bush/stalky/first),
list("name" = "Plastic Stalky Bush (Alt)", "path" = /obj/structure/decoration/bush/stalky/second),
list("name" = "Plastic Stalky Bush (Alt 2)", "path" = /obj/structure/decoration/bush/stalky/third),
list("name" = "Plastic Stalky Bush (Random)", "path" = /obj/structure/decoration/bush/stalky/style_random),
list("name" = "Plastic Grassy Bush", "path" = /obj/structure/decoration/bush/grassy/first),
list("name" = "Plastic Grassy Bush (Alt)", "path" = /obj/structure/decoration/bush/grassy/second),
list("name" = "Plastic Grassy Bush (Alt 2)", "path" = /obj/structure/decoration/bush/grassy/third),
list("name" = "Plastic Grassy Bush (Alt 3)", "path" = /obj/structure/decoration/bush/grassy/fourth),
list("name" = "Plastic Grassy Bush (Random)", "path" = /obj/structure/decoration/bush/grassy/style_random),
list("name" = "Plastic Sparse Grass", "path" = /obj/structure/decoration/bush/sparsegrass/first),
list("name" = "Plastic Sparse Grass (Alt)", "path" = /obj/structure/decoration/bush/sparsegrass/second),
list("name" = "Plastic Sparse Grass (Alt 2)", "path" = /obj/structure/decoration/bush/sparsegrass/third),
list("name" = "Plastic Sparse Grass (Random)", "path" = /obj/structure/decoration/bush/sparsegrass/style_random),
list("name" = "Plastic Full Grass", "path" = /obj/structure/decoration/bush/fullgrass/first),
list("name" = "Plastic Full Grass (Alt)", "path" = /obj/structure/decoration/bush/fullgrass/second),
list("name" = "Plastic Full Grass (Alt 2)", "path" = /obj/structure/decoration/bush/fullgrass/third),
list("name" = "Plastic Full Grass (Random)", "path" = /obj/structure/decoration/bush/fullgrass/style_random),
list("name" = "Plastic Ferny Bush", "path" = /obj/structure/decoration/bush/ferny/first),
list("name" = "Plastic Ferny Bush (Alt)", "path" = /obj/structure/decoration/bush/ferny/second),
list("name" = "Plastic Ferny Bush (Alt 2)", "path" = /obj/structure/decoration/bush/ferny/third),
list("name" = "Plastic Ferny Bush (Random)", "path" = /obj/structure/decoration/bush/ferny/style_random),
list("name" = "Plastic Sunny Bush", "path" = /obj/structure/decoration/bush/sunny/first),
list("name" = "Plastic Sunny Bush (Alt)", "path" = /obj/structure/decoration/bush/sunny/second),
list("name" = "Plastic Sunny Bush (Alt 2)", "path" = /obj/structure/decoration/bush/sunny/third),
list("name" = "Plastic Sunny Bush (Random)", "path" = /obj/structure/decoration/bush/sunny/style_random),
list("name" = "Plastic Generic Bush", "path" = /obj/structure/decoration/bush/generic/first),
list("name" = "Plastic Generic Bush (Alt)", "path" = /obj/structure/decoration/bush/generic/second),
list("name" = "Plastic Generic Bush (Alt 2)", "path" = /obj/structure/decoration/bush/generic/third),
list("name" = "Plastic Generic Bush (Alt 3)", "path" = /obj/structure/decoration/bush/generic/fourth),
list("name" = "Plastic Generic Bush (Random)", "path" = /obj/structure/decoration/bush/generic/style_random),
list("name" = "Plastic Pointy Bush", "path" = /obj/structure/decoration/bush/pointy/first),
list("name" = "Plastic Pointy Bush (Alt)", "path" = /obj/structure/decoration/bush/pointy/second),
list("name" = "Plastic Pointy Bush (Alt 2)", "path" = /obj/structure/decoration/bush/pointy/third),
list("name" = "Plastic Pointy Bush (Alt 3)", "path" = /obj/structure/decoration/bush/pointy/fourth),
list("name" = "Plastic Pointy Bush (Random)", "path" = /obj/structure/decoration/bush/pointy/style_random),
list("name" = "Plastic Lavender Grass", "path" = /obj/structure/decoration/bush/lavendergrass/first),
list("name" = "Plastic Lavender Grass (Alt)", "path" = /obj/structure/decoration/bush/lavendergrass/second),
list("name" = "Plastic Lavender Grass (Alt 2)", "path" = /obj/structure/decoration/bush/lavendergrass/third),
list("name" = "Plastic Lavender Grass (Alt 3)", "path" = /obj/structure/decoration/bush/lavendergrass/fourth),
list("name" = "Plastic Lavender Grass (Random)", "path" = /obj/structure/decoration/bush/lavendergrass/style_random),
),
"Flowers" = list(
list("name" = "Plastic Yellow-White Flowers", "path" = /obj/structure/decoration/bush/flowers_yw/first),
list("name" = "Plastic Yellow-White Flowers (Alt)", "path" = /obj/structure/decoration/bush/flowers_yw/second),
list("name" = "Plastic Yellow-White Flowers (Alt 2)", "path" = /obj/structure/decoration/bush/flowers_yw/third),
list("name" = "Plastic Yellow-White Flowers (Random)", "path" = /obj/structure/decoration/bush/flowers_yw/style_random),
list("name" = "Plastic Blue-Red Flowers", "path" = /obj/structure/decoration/bush/flowers_br/first),
list("name" = "Plastic Blue-Red Flowers (Alt)", "path" = /obj/structure/decoration/bush/flowers_br/second),
list("name" = "Plastic Blue-Red Flowers (Alt 2)", "path" = /obj/structure/decoration/bush/flowers_br/third),
list("name" = "Plastic Blue-Red Flowers (Random)", "path" = /obj/structure/decoration/bush/flowers_br/style_random),
list("name" = "Plastic Purple Flowers", "path" = /obj/structure/decoration/bush/flowers_pp/first),
list("name" = "Plastic Purple Flowers (Alt)", "path" = /obj/structure/decoration/bush/flowers_pp/second),
list("name" = "Plastic Purple Flowers (Alt 2)", "path" = /obj/structure/decoration/bush/flowers_pp/third),
list("name" = "Plastic Purple Flowers (Random)", "path" = /obj/structure/decoration/bush/flowers_pp/style_random),
),
"Snow" = list(
list("name" = "Plastic Snowy Bush", "path" = /obj/structure/decoration/bush/snow/first),
list("name" = "Plastic Snowy Bush (Alt)", "path" = /obj/structure/decoration/bush/snow/second),
list("name" = "Plastic Snowy Bush (Alt 2)", "path" = /obj/structure/decoration/bush/snow/third),
list("name" = "Plastic Snowy Bush (Alt 3)", "path" = /obj/structure/decoration/bush/snow/fourth),
list("name" = "Plastic Snowy Bush (Alt 4)", "path" = /obj/structure/decoration/bush/snow/fifth),
list("name" = "Plastic Snowy Bush (Alt 5)", "path" = /obj/structure/decoration/bush/snow/sixth),
list("name" = "Plastic Snowy Bush (Random)", "path" = /obj/structure/decoration/bush/snow/style_random),
),
"Jungle" = list(
list("name" = "Plastic Jungle Bush", "path" = /obj/structure/decoration/bush/jungle/first),
list("name" = "Plastic Jungle Bush (Alt)", "path" = /obj/structure/decoration/bush/jungle/second),
list("name" = "Plastic Jungle Bush (Alt 2)", "path" = /obj/structure/decoration/bush/jungle/third),
list("name" = "Plastic Jungle Bush (Random)", "path" = /obj/structure/decoration/bush/jungle/style_random),
list("name" = "Plastic Jungle Bush B", "path" = /obj/structure/decoration/bush/jungle/b/first),
list("name" = "Plastic Jungle Bush B (Alt)", "path" = /obj/structure/decoration/bush/jungle/b/second),
list("name" = "Plastic Jungle Bush B (Alt 2)", "path" = /obj/structure/decoration/bush/jungle/b/third),
list("name" = "Plastic Jungle Bush B (Random)", "path" = /obj/structure/decoration/bush/jungle/b/style_random),
list("name" = "Plastic Jungle Bush C", "path" = /obj/structure/decoration/bush/jungle/c/first),
list("name" = "Plastic Jungle Bush C (Alt)", "path" = /obj/structure/decoration/bush/jungle/c/second),
list("name" = "Plastic Jungle Bush C (Alt 2)", "path" = /obj/structure/decoration/bush/jungle/c/third),
list("name" = "Plastic Jungle Bush C (Random)", "path" = /obj/structure/decoration/bush/jungle/c/style_random),
list("name" = "Large Plastic Bush", "path" = /obj/structure/decoration/bush/large/first),
list("name" = "Large Plastic Bush (Alt)", "path" = /obj/structure/decoration/bush/large/second),
list("name" = "Large Plastic Bush (Alt 2)", "path" = /obj/structure/decoration/bush/large/third),
list("name" = "Large Plastic Bush (Random)", "path" = /obj/structure/decoration/bush/large/style_random),
),
"Rocks" = list(
list("name" = "Plastic Rock", "path" = /obj/structure/decoration/rock/first),
list("name" = "Plastic Rock (Alt)", "path" = /obj/structure/decoration/rock/second),
list("name" = "Plastic Rock (Alt 2)", "path" = /obj/structure/decoration/rock/third),
list("name" = "Plastic Rock (Alt 3)", "path" = /obj/structure/decoration/rock/fourth),
list("name" = "Plastic Rock (Random)", "path" = /obj/structure/decoration/rock/style_random),
list("name" = "Plastic Rock Pile", "path" = /obj/structure/decoration/rock/pile/first),
list("name" = "Plastic Rock Pile (Alt)", "path" = /obj/structure/decoration/rock/pile/second),
list("name" = "Plastic Rock Pile (Alt 2)", "path" = /obj/structure/decoration/rock/pile/third),
list("name" = "Plastic Rock Pile (Random)", "path" = /obj/structure/decoration/rock/pile/style_random),
list("name" = "Plastic Jungle Rocks", "path" = /obj/structure/decoration/rock/pile/jungle/first),
list("name" = "Plastic Jungle Rocks (Alt)", "path" = /obj/structure/decoration/rock/pile/jungle/second),
list("name" = "Plastic Jungle Rocks (Alt 2)", "path" = /obj/structure/decoration/rock/pile/jungle/third),
list("name" = "Plastic Jungle Rocks (Alt 3)", "path" = /obj/structure/decoration/rock/pile/jungle/fourth),
list("name" = "Plastic Jungle Rocks (Alt 4)", "path" = /obj/structure/decoration/rock/pile/jungle/fifth),
list("name" = "Plastic Jungle Rocks (Random)", "path" = /obj/structure/decoration/rock/pile/jungle/style_random),
list("name" = "Large Plastic Rocks", "path" = /obj/structure/decoration/rock/pile/jungle/large/first),
list("name" = "Large Plastic Rocks (Alt)", "path" = /obj/structure/decoration/rock/pile/jungle/large/second),
list("name" = "Large Plastic Rocks (Alt 2)", "path" = /obj/structure/decoration/rock/pile/jungle/large/third),
list("name" = "Large Plastic Rocks (Random)", "path" = /obj/structure/decoration/rock/pile/jungle/large/style_random),
),
))
/obj/item/construction/rdd
name = "rapid-decoration-device (RDD)"
desc = "A device used to rapidly deploy plastic decorative flora. \
Internally synthesizes cheap plastic replicas of natural scenery."
icon = 'icons/obj/tools.dmi'
icon_state = "rdd"
worn_icon_state = "RCD"
lefthand_file = 'icons/mob/inhands/equipment/tools_lefthand.dmi'
righthand_file = 'icons/mob/inhands/equipment/tools_righthand.dmi'
custom_premium_price = PAYCHECK_COMMAND * 1
max_matter = 60
slot_flags = ITEM_SLOT_BELT
item_flags = NO_MAT_REDEMPTION | NOBLUDGEON
has_ammobar = TRUE
banned_upgrades = RCD_ALL_UPGRADES & ~RCD_UPGRADE_SILO_LINK
charge_icon_state = "rtd"
drop_sound = 'sound/items/handling/tools/rcd_drop.ogg'
pickup_sound = 'sound/items/handling/tools/rcd_pickup.ogg'
sound_vary = TRUE
custom_materials = list(/datum/material/plastic = SHEET_MATERIAL_AMOUNT * 4, /datum/material/iron = SHEET_MATERIAL_AMOUNT * 3, /datum/material/glass = SHEET_MATERIAL_AMOUNT * 1.5)
/// Currently selected decoration path
var/obj/structure/decoration/selected_decoration
/// Currently selected category name (for UI)
var/selected_category
/// Currently selected design name (for UI)
var/selected_design_name
/obj/item/construction/rdd/Initialize(mapload)
. = ..()
selected_category = GLOB.rdd_designs[1]
var/list/category_designs = GLOB.rdd_designs[selected_category]
if(length(category_designs))
var/list/first_design = category_designs[1]
selected_decoration = first_design["path"]
selected_design_name = first_design["name"]
/obj/item/construction/rdd/examine(mob/user)
. = ..()
. += span_info("Currently set to produce: [span_bold(initial(selected_decoration.name))].")
/obj/item/construction/rdd/attack_self(mob/user)
. = ..()
ui_interact(user)
/obj/item/construction/rdd/ui_interact(mob/user, datum/tgui/ui)
ui = SStgui.try_update_ui(user, src, ui)
if(!ui)
ui = new(user, src, "RapidDecorationDevice", name)
ui.open()
/obj/item/construction/rdd/ui_assets(mob/user)
return list(
get_asset_datum(/datum/asset/spritesheet_batched/rdd),
)
/obj/item/construction/rdd/ui_static_data(mob/user)
var/list/data = ..()
data["categories"] = list()
for(var/category in GLOB.rdd_designs)
var/list/cat_entry = list("cat_name" = category, "designs" = list())
for(var/list/design in GLOB.rdd_designs[category])
cat_entry["designs"] += list(list(
"name" = design["name"],
"icon" = sanitize_css_class_name(design["name"]),
))
data["categories"] += list(cat_entry)
return data
/obj/item/construction/rdd/ui_data(mob/user)
var/list/data = ..()
var/total_matter = get_matter(user)
data["matter"] = isnum(total_matter) ? total_matter : 0
data["max_matter"] = max_matter
data["selected_category"] = selected_category
data["selected_design"] = selected_design_name
return data
/obj/item/construction/rdd/handle_ui_act(action, params, datum/tgui/ui, datum/ui_state/state)
. = ..()
if(.)
return
switch(action)
if("design")
var/category = params["category"]
var/design_name = params["name"]
for(var/list/design as anything in GLOB.rdd_designs[category])
if(design["name"] == design_name)
selected_decoration = design["path"]
selected_category = category
selected_design_name = design_name
playsound(src, SFX_TOOL_SWITCH, 20, TRUE)
return TRUE
return TRUE
/obj/item/construction/rdd/interact_with_atom(atom/interacting_with, mob/living/user, list/modifiers)
. = ..()
if(. & ITEM_INTERACT_ANY_BLOCKER)
return .
var/turf/target_turf = get_turf(interacting_with)
if(!target_turf)
return ITEM_INTERACT_BLOCKING
if(target_turf.is_blocked_turf(exclude_mobs = TRUE))
balloon_alert(user, "tile is blocked!")
return ITEM_INTERACT_BLOCKING
var/decoration_count = 0
for(var/obj/structure/decoration/existing in target_turf.contents)
decoration_count++
if(decoration_count >= 3)
balloon_alert(user, "too many decorations here!")
return ITEM_INTERACT_BLOCKING
var/cost = RDD_COST_MULTIPLIER
if(!useResource(cost, user, TRUE))
return ITEM_INTERACT_BLOCKING
playsound(loc, 'sound/machines/click.ogg', 50, TRUE)
if(!do_after(user, 0.5 SECONDS, target_turf))
return ITEM_INTERACT_BLOCKING
if(!useResource(cost, user, TRUE))
return ITEM_INTERACT_BLOCKING
playsound(loc, 'sound/items/deconstruct.ogg', 50, TRUE)
new selected_decoration(target_turf)
useResource(cost, user)
log_tool("[key_name(user)] used [src] to create [initial(selected_decoration.name)] at [AREACOORD(target_turf)]")
return ITEM_INTERACT_SUCCESS
/obj/item/construction/rdd/interact_with_atom_secondary(atom/interacting_with, mob/living/user, list/modifiers)
var/turf/target_turf = get_turf(interacting_with)
if(!target_turf)
return NONE
var/obj/structure/decoration/found = locate() in target_turf
if(!found)
return NONE
playsound(target_turf, 'sound/machines/click.ogg', 50, TRUE)
if(!do_after(user, 0.5 SECONDS, target_turf))
return ITEM_INTERACT_BLOCKING
playsound(target_turf, 'sound/items/deconstruct.ogg', 50, TRUE)
qdel(found)
log_tool("[key_name(user)] used [src] to deconstruct [found] at [AREACOORD(target_turf)]")
return ITEM_INTERACT_SUCCESS
/obj/item/construction/rdd/borg
desc = "A device used to rapidly deploy plastic decorative flora. Uses the cyborg's internal cell."
custom_materials = null
/// energy usage per decoration
var/energyfactor = 0.1 * STANDARD_CELL_CHARGE
/obj/item/construction/rdd/borg/get_matter(mob/user)
if(!iscyborg(user))
return 0
var/mob/living/silicon/robot/borgy = user
if(!borgy.cell)
return 0
max_matter = borgy.cell.maxcharge
return borgy.cell.charge
/obj/item/construction/rdd/borg/useResource(amount, mob/user, dry_run)
var/mob/living/silicon/robot/borgy = user
if(!iscyborg(borgy))
return FALSE
if(!borgy.cell)
balloon_alert(user, "no cell found!")
return FALSE
if(borgy.cell.charge < amount * energyfactor)
balloon_alert(user, "insufficient charge!")
return FALSE
if(!dry_run)
playsound(loc, 'sound/items/deconstruct.ogg', 50, TRUE)
return borgy.cell.use(amount * energyfactor)
return TRUE
/obj/item/construction/rdd/loaded
matter = /obj/item/construction/rdd::max_matter
#undef RDD_COST_MULTIPLIER