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Leland Kemble 9f1d18dbdf Prevents you from putting yourself in the DNA vault multiple times (#93905)
## About The Pull Request

You can't put more than one of the same dna in the vault, because the
probe checks when it scans you that your dna isn't in the probe's
storage or the vault's storage. But it doesn't check other probes, so
multiple probes can have the same dna, and can all upload the same dna
to the vault for duplicate DNA.

This PR adds a check when you upload to a vault that throws out dna
already in the vault before it's counted.

## Why It's Good For The Game

Duplicate DNA is clearly not intentional

## Changelog
🆑

fix: You can no longer duplicate DNA for the DNA vault objective by
scanning yourself on several probes at once.

/🆑
2025-11-19 05:10:58 +01:00

197 lines
7.8 KiB
Plaintext

#define DNA_PROBE_SCAN_PLANTS (1<<0)
#define DNA_PROBE_SCAN_ANIMALS (1<<1)
#define DNA_PROBE_SCAN_HUMANS (1<<2)
/**
* DNA Probe
*
* Used for scanning DNA, and can be uploaded to a DNA vault.
*/
/obj/item/dna_probe
name = "DNA Sampler"
desc = "Can be used to take chemical and genetic samples of pretty much anything. Needs to be linked with a DNA vault first."
icon = 'icons/obj/medical/syringe.dmi'
inhand_icon_state = "sampler"
lefthand_file = 'icons/mob/inhands/equipment/medical_lefthand.dmi'
righthand_file = 'icons/mob/inhands/equipment/medical_righthand.dmi'
icon_state = "sampler"
item_flags = NOBLUDGEON
///What sources of DNA this sampler can extract from.
var/allowed_scans = DNA_PROBE_SCAN_PLANTS | DNA_PROBE_SCAN_ANIMALS | DNA_PROBE_SCAN_HUMANS
///List of all Animal DNA scanned with this sampler.
var/list/stored_dna_animal = list()
///List of all Plant DNA scanned with this sampler.
var/list/stored_dna_plants = list()
///List of all Human DNA scanned with this sampler.
var/list/stored_dna_human = list()
///weak ref to the dna vault
var/datum/weakref/dna_vault_ref
/obj/item/dna_probe/interact_with_atom(atom/interacting_with, mob/living/user, list/modifiers)
if(istype(interacting_with, /obj/machinery/dna_vault))
if(dna_vault_ref?.resolve())
// Weirdly we can upload to any existing DNA vault so long as we're linked to any other existing DNA vault.
return try_upload_dna(interacting_with, user) ? ITEM_INTERACT_SUCCESS : ITEM_INTERACT_BLOCKING
return try_linking_vault(interacting_with, user) ? ITEM_INTERACT_SUCCESS : ITEM_INTERACT_BLOCKING
if (!valid_scan_target(interacting_with))
return NONE
if (scan_dna(interacting_with, user))
return ITEM_INTERACT_SUCCESS
return ITEM_INTERACT_BLOCKING
/obj/item/dna_probe/proc/try_linking_vault(obj/machinery/dna_vault/target, mob/user)
var/obj/machinery/dna_vault/our_vault = dna_vault_ref?.resolve()
if(!our_vault)
dna_vault_ref = WEAKREF(target)//linking the dna vault with the probe
balloon_alert(user, "vault linked")
playsound(src, 'sound/machines/terminal/terminal_success.ogg', 50)
return TRUE
return FALSE
/obj/item/dna_probe/proc/try_upload_dna(obj/machinery/dna_vault/target, mob/user)
var/uploaded = 0
stored_dna_plants -= target.plant_dna
stored_dna_human -= target.human_dna
stored_dna_animal -= target.animal_dna
var/plant_dna_length = length(stored_dna_plants)
var/human_dna_length = length(stored_dna_human)
var/animal_dna_length = length(stored_dna_animal)
if(plant_dna_length)
uploaded += plant_dna_length
target.plant_dna += stored_dna_plants
stored_dna_plants.Cut()
if(human_dna_length)
uploaded += human_dna_length
target.human_dna += stored_dna_human
stored_dna_human.Cut()
if(animal_dna_length)
uploaded += animal_dna_length
target.animal_dna += stored_dna_animal
stored_dna_animal.Cut()
target.check_goal()
playsound(target, 'sound/machines/compiler/compiler-stage1.ogg', 50)
to_chat(user, span_notice("[uploaded] new datapoints uploaded."))
return uploaded
/obj/item/dna_probe/proc/scan_dna(atom/target, mob/user)
var/obj/machinery/dna_vault/our_vault = dna_vault_ref?.resolve()
if(!our_vault)
playsound(user, 'sound/machines/buzz/buzz-sigh.ogg', 50)
balloon_alert(user, "need database!")
return
if(istype(target, /obj/machinery/hydroponics))
var/obj/machinery/hydroponics/hydro_tray = target
if(!hydro_tray.myseed)
return
if(our_vault.plant_dna[hydro_tray.myseed.type])
to_chat(user, span_notice("Plant data is already present in vault storage."))
return
if(stored_dna_plants[hydro_tray.myseed.type])
to_chat(user, span_notice("Plant data already present in local storage."))
return
if(hydro_tray.plant_status != HYDROTRAY_PLANT_HARVESTABLE) // So it's bit harder.
to_chat(user, span_alert("Plant needs to be ready to harvest to perform full data scan.")) //Because space dna is actually magic
return
stored_dna_plants[hydro_tray.myseed.type] = TRUE
playsound(src, 'sound/machines/compiler/compiler-stage2.ogg', 50)
balloon_alert(user, "data added")
return TRUE
else if(ishuman(target))
var/mob/living/carbon/human/human_target = target
if(our_vault.human_dna[human_target.dna.unique_identity])
to_chat(user, span_notice("Humanoid data already present in vault storage."))
return
if(stored_dna_human[human_target.dna.unique_identity])
to_chat(user, span_notice("Humanoid data already present in local storage."))
return
if(!(human_target.mob_biotypes & MOB_ORGANIC))
to_chat(user, span_alert("No compatible DNA detected."))
return .
stored_dna_human[human_target.dna.unique_identity] = TRUE
playsound(src, 'sound/machines/compiler/compiler-stage2.ogg', 50)
balloon_alert(user, "data added")
return TRUE
if(!isliving(target))
return
var/static/list/non_simple_animals = typecacheof(list(/mob/living/carbon/alien))
if(!isanimal_or_basicmob(target) && !is_type_in_typecache(target, non_simple_animals) && !ismonkey(target))
return
var/mob/living/living_target = target
if(our_vault.animal_dna[living_target.type])
to_chat(user, span_notice("Animal data already present in vault storage."))
return
if(stored_dna_animal[living_target.type])
to_chat(user, span_notice("Animal data already present in local storage."))
return
if(!(living_target.mob_biotypes & MOB_ORGANIC))
to_chat(user, span_alert("No compatible DNA detected."))
return .
stored_dna_animal[living_target.type] = TRUE
playsound(src, 'sound/machines/compiler/compiler-stage2.ogg', 50)
balloon_alert(user, "data added")
return TRUE
/obj/item/dna_probe/proc/valid_scan_target(atom/target)
if((allowed_scans & DNA_PROBE_SCAN_PLANTS) && istype(target, /obj/machinery/hydroponics))
return TRUE
if((allowed_scans & DNA_PROBE_SCAN_HUMANS) && ishuman(target))
return TRUE
if((allowed_scans & DNA_PROBE_SCAN_ANIMALS) && isliving(target))
var/static/list/non_simple_animals = typecacheof(list(/mob/living/carbon/alien))
if(isanimal_or_basicmob(target) || is_type_in_typecache(target, non_simple_animals) || ismonkey(target))
return TRUE
return FALSE
#define CARP_MIX_DNA_TIMER (15 SECONDS)
///Used for scanning carps, and then turning yourself into one.
/obj/item/dna_probe/carp_scanner
name = "Carp DNA Sampler"
desc = "Can be used to take chemical and genetic samples of animals."
///Whether we have Carp DNA
var/carp_dna_loaded = FALSE
/obj/item/dna_probe/carp_scanner/examine_more(mob/user)
. = ..()
. = list(span_notice("Using this on a Space Carp will harvest its DNA. Use it in-hand once complete to mutate it with yourself."))
/obj/item/dna_probe/carp_scanner/scan_dna(atom/target, mob/user)
if(istype(target, /mob/living/basic/carp))
carp_dna_loaded = TRUE
playsound(src, 'sound/machines/compiler/compiler-stage2.ogg', 50)
balloon_alert(user, "dna scanned")
else
return ..()
/obj/item/dna_probe/carp_scanner/valid_scan_target(atom/target)
if (istype(target, /mob/living/basic/carp))
return TRUE
return ..()
/obj/item/dna_probe/carp_scanner/attack_self(mob/user, modifiers)
. = ..()
if(!carp_dna_loaded)
to_chat(user, span_notice("Space carp DNA is required to use the self-mutation mechanism!"))
return
to_chat(user, span_notice("You pull out the needle from [src] and flip the switch, and start injecting yourself with it."))
if(!do_after(user, CARP_MIX_DNA_TIMER))
return
var/mob/living/basic/space_dragon/new_dragon = user.change_mob_type(/mob/living/basic/space_dragon, location = loc, delete_old_mob = TRUE)
new_dragon.add_filter("anger_glow", 3, list("type" = "outline", "color" = COLOR_CARP_RIFT_RED, "size" = 5))
new_dragon.add_movespeed_modifier(/datum/movespeed_modifier/dragon_rage)
priority_announce("A large organic energy flux has been recorded near of [station_name()], please stand-by.", "Lifesign Alert")
qdel(src)
#undef CARP_MIX_DNA_TIMER
#undef DNA_PROBE_SCAN_PLANTS
#undef DNA_PROBE_SCAN_ANIMALS
#undef DNA_PROBE_SCAN_HUMANS