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Bubberstation/code/game/machinery/shieldgen.dm
T
MrMelbertandGitHub e350c50a5c Emp prot tags are more specific, also no longer leak stealthy emp protection (#93211) 
## About The Pull Request

Fixes #93199

EMP protection now specifies what it protects

Adds an EMP flag for things which should definitely not indicate they
are EMP proof

## Changelog

🆑 Melbert
fix: EMP proof objects now specify what they protect rather than only
implying it's 100% emp proof
fix: Some objects meant to stealthily be emp proof no longer broadcast
they are emp proof on examine
/🆑
2025-10-02 05:05:57 +02:00

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/obj/structure/emergency_shield
name = "emergency energy shield"
desc = "An energy shield used to contain hull breaches."
icon = 'icons/effects/effects.dmi'
icon_state = "shield-old"
integrity_failure = 0.5
density = TRUE
move_resist = INFINITY
opacity = FALSE
anchored = TRUE
resistance_flags = LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
max_integrity = 200 //The shield can only take so much beating (prevents perma-prisons)
can_atmos_pass = ATMOS_PASS_DENSITY
/obj/structure/emergency_shield/Initialize(mapload)
. = ..()
setDir(pick(GLOB.cardinals))
air_update_turf(TRUE, TRUE)
/obj/structure/emergency_shield/Destroy()
air_update_turf(TRUE, FALSE)
. = ..()
/obj/structure/emergency_shield/Move()
var/turf/T = loc
. = ..()
move_update_air(T)
/obj/structure/emergency_shield/emp_act(severity)
. = ..()
if (. & EMP_PROTECT_SELF)
return
switch(severity)
if(1)
qdel(src)
if(2)
take_damage(50, BRUTE, ENERGY, 0)
/obj/structure/emergency_shield/play_attack_sound(damage, damage_type = BRUTE, damage_flag = 0)
switch(damage_type)
if(BURN)
playsound(loc, 'sound/effects/empulse.ogg', 75, TRUE)
if(BRUTE)
playsound(loc, 'sound/effects/empulse.ogg', 75, TRUE)
/obj/structure/emergency_shield/take_damage(damage, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir)
. = ..()
if(.) //damage was dealt
new /obj/effect/temp_visual/impact_effect/ion(loc)
/// Subtype of shields that repair over time after sustaining integrity damage
/obj/structure/emergency_shield/regenerating
name = "energy shield"
desc = "An energy shield used to let ships through, but keep out the void of space."
max_integrity = 400
/// How much integrity is healed per second (per process multiplied by seconds per tick)
var/heal_rate_per_second = 5
/obj/structure/emergency_shield/regenerating/Initialize(mapload)
. = ..()
AddElement(/datum/element/empprotection, EMP_PROTECT_SELF|EMP_NO_EXAMINE)
/obj/structure/emergency_shield/regenerating/Destroy()
STOP_PROCESSING(SSobj, src)
return ..()
/obj/structure/emergency_shield/regenerating/take_damage(damage, damage_type, damage_flag, sound_effect, attack_dir)
. = ..()
if(.)
// We took some damage so we'll start processing to heal said damage.
START_PROCESSING(SSobj, src)
/obj/structure/emergency_shield/regenerating/process(seconds_per_tick)
var/repaired_amount = repair_damage(heal_rate_per_second * seconds_per_tick)
if(repaired_amount <= 0)
// 0 damage repaired means we're at the max integrity, so don't need to process anymore
STOP_PROCESSING(SSobj, src)
/obj/structure/emergency_shield/cult
name = "cult barrier"
desc = "A shield summoned by cultists to keep heretics away."
max_integrity = 100
icon_state = "shield-red"
/obj/structure/emergency_shield/cult/Initialize(mapload)
. = ..()
AddElement(/datum/element/empprotection, EMP_PROTECT_SELF|EMP_NO_EXAMINE)
/obj/structure/emergency_shield/cult/narsie
name = "sanguine barrier"
desc = "A potent shield summoned by cultists to defend their rites."
max_integrity = 60
/obj/structure/emergency_shield/cult/weak
name = "Invoker's Shield"
desc = "A weak shield summoned by cultists to protect them while they carry out delicate rituals."
color = COLOR_RED
max_integrity = 20
mouse_opacity = MOUSE_OPACITY_TRANSPARENT
layer = ABOVE_MOB_LAYER
/obj/structure/emergency_shield/cult/barrier
density = FALSE //toggled on right away by the parent rune
can_atmos_pass = ATMOS_PASS_DENSITY
///The rune that created the shield itself. Used to delete the rune when the shield is destroyed.
var/obj/effect/rune/parent_rune
/obj/structure/emergency_shield/cult/barrier/attack_hand(mob/living/user, list/modifiers)
parent_rune.attack_hand(user, modifiers)
/obj/structure/emergency_shield/cult/barrier/attack_animal(mob/living/simple_animal/user, list/modifiers)
if(IS_CULTIST(user))
parent_rune.attack_animal(user)
else
..()
/obj/structure/emergency_shield/cult/barrier/Destroy()
if(parent_rune)
parent_rune.visible_message(span_danger("The [parent_rune] fades away as [src] is destroyed!"))
QDEL_NULL(parent_rune)
return ..()
/**
*Turns the shield on and off.
*
*The shield has 2 states: on and off. When on, it will block movement,projectiles, items, etc. and be clearly visible, and block atmospheric gases.
*When off, the rune no longer blocks anything and turns invisible.
*The barrier itself is not intended to interact with the conceal runes cult spell for balance purposes.
*/
/obj/structure/emergency_shield/cult/barrier/proc/Toggle()
set_density(!density)
air_update_turf(TRUE, !density)
if(!density)
SetInvisibility(INVISIBILITY_OBSERVER, id=type)
else
RemoveInvisibility(type)
/obj/machinery/shieldgen
name = "anti-breach shielding projector"
desc = "Used to seal minor hull breaches."
icon = 'icons/obj/machines/shield_generator.dmi'
icon_state = "shieldoff"
density = TRUE
opacity = FALSE
anchored = FALSE
pressure_resistance = 2*ONE_ATMOSPHERE
req_access = list(ACCESS_ENGINEERING)
max_integrity = 100
var/active = FALSE
var/list/deployed_shields
var/locked = FALSE
var/shield_range = 4
/obj/machinery/shieldgen/Initialize(mapload)
. = ..()
deployed_shields = list()
if(mapload && active && anchored)
shields_up()
/obj/machinery/shieldgen/Destroy()
QDEL_LIST(deployed_shields)
return ..()
/obj/machinery/shieldgen/proc/shields_up()
active = TRUE
update_appearance()
move_resist = INFINITY
for(var/turf/target_tile as anything in RANGE_TURFS(shield_range, src))
if(isspaceturf(target_tile) && !(locate(/obj/structure/emergency_shield) in target_tile))
if(!(machine_stat & BROKEN) || prob(33))
deployed_shields += new /obj/structure/emergency_shield(target_tile)
/obj/machinery/shieldgen/proc/shields_down()
active = FALSE
move_resist = initial(move_resist)
update_appearance()
QDEL_LIST(deployed_shields)
/obj/machinery/shieldgen/process(seconds_per_tick)
if((machine_stat & BROKEN) && active)
if(deployed_shields.len && SPT_PROB(2.5, seconds_per_tick))
qdel(pick(deployed_shields))
/obj/machinery/shieldgen/interact(mob/user)
. = ..()
if(.)
return
if(locked && !HAS_SILICON_ACCESS(user))
to_chat(user, span_warning("The machine is locked, you are unable to use it!"))
return
if(panel_open)
to_chat(user, span_warning("The panel must be closed before operating this machine!"))
return
if (active)
user.visible_message(span_notice("[user] deactivated \the [src]."), \
span_notice("You deactivate \the [src]."), \
span_hear("You hear heavy droning fade out."))
shields_down()
else
if(anchored)
user.visible_message(span_notice("[user] activated \the [src]."), \
span_notice("You activate \the [src]."), \
span_hear("You hear heavy droning."))
shields_up()
else
to_chat(user, span_warning("The device must first be secured to the floor!"))
return
/obj/machinery/shieldgen/screwdriver_act(mob/living/user, obj/item/tool)
tool.play_tool_sound(src, 100)
toggle_panel_open()
if(panel_open)
to_chat(user, span_notice("You open the panel and expose the wiring."))
else
to_chat(user, span_notice("You close the panel."))
return TRUE
/obj/machinery/shieldgen/wrench_act(mob/living/user, obj/item/tool)
. = TRUE
if(locked)
to_chat(user, span_warning("The bolts are covered! Unlocking this would retract the covers."))
return
if(!anchored && !isinspace())
tool.play_tool_sound(src, 100)
balloon_alert(user, "secured")
set_anchored(TRUE)
else if(anchored)
tool.play_tool_sound(src, 100)
balloon_alert(user, "unsecured")
if(active)
to_chat(user, span_notice("\The [src] shuts off!"))
shields_down()
set_anchored(FALSE)
/obj/machinery/shieldgen/attackby(obj/item/W, mob/user, list/modifiers, list/attack_modifiers)
if(istype(W, /obj/item/stack/cable_coil) && (machine_stat & BROKEN) && panel_open)
var/obj/item/stack/cable_coil/coil = W
if (coil.get_amount() < 1)
to_chat(user, span_warning("You need one length of cable to repair [src]!"))
return
to_chat(user, span_notice("You begin to replace the wires..."))
if(do_after(user, 3 SECONDS, target = src))
if(coil.get_amount() < 1)
return
coil.use(1)
atom_integrity = max_integrity
set_machine_stat(machine_stat & ~BROKEN)
to_chat(user, span_notice("You repair \the [src]."))
update_appearance()
else if(W.GetID())
if(allowed(user) && !(obj_flags & EMAGGED))
locked = !locked
to_chat(user, span_notice("You [locked ? "lock" : "unlock"] the controls."))
else if(obj_flags & EMAGGED)
to_chat(user, span_danger("Error, access controller damaged!"))
else
to_chat(user, span_danger("Access denied."))
else
return ..()
/obj/machinery/shieldgen/emag_act(mob/user, obj/item/card/emag/emag_card)
if(obj_flags & EMAGGED)
to_chat(user, span_warning("The access controller is damaged!"))
return FALSE
obj_flags |= EMAGGED
locked = FALSE
playsound(src, SFX_SPARKS, 100, TRUE, SHORT_RANGE_SOUND_EXTRARANGE)
balloon_alert(user, "access controller shorted")
return TRUE
/obj/machinery/shieldgen/update_icon_state()
icon_state = "shield[active ? "on" : "off"][(machine_stat & BROKEN) ? "br" : null]"
return ..()
#define ACTIVE_SETUPFIELDS 1
#define ACTIVE_HASFIELDS 2
/obj/machinery/power/shieldwallgen
name = "shield wall generator"
desc = "A shield generator."
icon = 'icons/obj/machines/shield_generator.dmi'
icon_state = "shield_wall_gen"
base_icon_state = "shield_wall_gen"
light_on = FALSE
light_range = 2.5
light_power = 2
light_color = LIGHT_COLOR_BLUE
anchored = FALSE
density = TRUE
req_access = list(ACCESS_TELEPORTER)
obj_flags = CONDUCTS_ELECTRICITY
use_power = NO_POWER_USE
active_power_usage = 150
circuit = /obj/item/circuitboard/machine/shieldwallgen
max_integrity = 300
/// whether the shield generator is active, ACTIVE_SETUPFIELDS will make it search for generators on process, and if that is successful, is set to ACTIVE_HASFIELDS
var/active = FALSE
/// are we locked?
var/locked = TRUE
/// how far do we seek another generator in our cardinal directions
var/shield_range = 8
/// the attached cable under us
var/obj/structure/cable/attached
/obj/machinery/power/shieldwallgen/xenobiologyaccess //use in xenobiology containment
name = "xenobiology shield wall generator"
desc = "A shield generator meant for use in xenobiology."
req_access = list(ACCESS_XENOBIOLOGY)
/obj/machinery/power/shieldwallgen/anchored
anchored = TRUE
/obj/machinery/power/shieldwallgen/unlocked //for use in ruins, etc
locked = FALSE
req_access = null
/obj/machinery/power/shieldwallgen/unlocked/anchored
anchored = TRUE
/obj/machinery/power/shieldwallgen/Initialize(mapload)
. = ..()
//Add to the early process queue to prioritize power draw
SSmachines.processing_early += src
if(anchored)
connect_to_network()
RegisterSignal(src, COMSIG_ATOM_SINGULARITY_TRY_MOVE, PROC_REF(block_singularity_if_active))
set_wires(new /datum/wires/shieldwallgen(src))
/obj/machinery/power/shieldwallgen/update_appearance(updates)
. = ..()
set_light(l_on = !!active)
/obj/machinery/power/shieldwallgen/update_icon_state()
icon_state = "[base_icon_state][active ? "_on" : ""]"
return ..()
/obj/machinery/power/shieldwallgen/update_overlays()
. = ..()
if(!panel_open)
return
. += "shieldgen_wires"
/obj/machinery/power/shieldwallgen/Destroy()
for(var/d in GLOB.cardinals)
cleanup_field(d)
return ..()
/obj/machinery/power/shieldwallgen/should_have_node()
return anchored
/obj/machinery/power/shieldwallgen/connect_to_network()
if(!anchored)
return FALSE
. = ..()
/obj/machinery/power/shieldwallgen/process_early()
if(active)
if(active == ACTIVE_SETUPFIELDS)
var/fields = 0
for(var/d in GLOB.cardinals)
if(setup_field(d))
fields++
if(fields)
active = ACTIVE_HASFIELDS
update_appearance()
if(!active_power_usage || surplus() >= active_power_usage)
add_load(active_power_usage)
else
visible_message(span_danger("[src] shuts down due to lack of power!"), \
"If this message is ever seen, something is wrong.",
span_hear("You hear heavy droning fade out."))
deactivate()
log_game("[src] deactivated due to lack of power at [AREACOORD(src)]")
else
update_appearance()
for(var/d in GLOB.cardinals)
cleanup_field(d)
/// Constructs the actual field walls in the specified direction, cleans up old/stuck shields before doing so
/obj/machinery/power/shieldwallgen/proc/setup_field(direction)
if(!direction)
return
var/turf/T = loc
var/obj/machinery/power/shieldwallgen/G
var/steps = 0
var/opposite_direction = REVERSE_DIR(direction)
for(var/i in 1 to shield_range) //checks out to 8 tiles away for another generator
T = get_step(T, direction)
G = locate(/obj/machinery/power/shieldwallgen) in T
if(G)
if(!G.active)
return
G.cleanup_field(opposite_direction)
break
else
steps++
if(!G || !steps) //no shield gen or no tiles between us and the gen
return
for(var/i in 1 to steps) //creates each field tile
T = get_step(T, opposite_direction)
new/obj/machinery/shieldwall(T, src, G)
return TRUE
/// cleans up fields in the specified direction if they belong to this generator
/obj/machinery/power/shieldwallgen/proc/cleanup_field(direction)
var/obj/machinery/shieldwall/F
var/obj/machinery/power/shieldwallgen/G
var/turf/T = loc
for(var/i in 1 to shield_range)
T = get_step(T, direction)
G = (locate(/obj/machinery/power/shieldwallgen) in T)
if(G && !G.active)
break
F = (locate(/obj/machinery/shieldwall) in T)
if(F && (F.gen_primary == src || F.gen_secondary == src)) //it's ours, kill it.
qdel(F)
/obj/machinery/power/shieldwallgen/proc/block_singularity_if_active()
SIGNAL_HANDLER
if (active)
return SINGULARITY_TRY_MOVE_BLOCK
/obj/machinery/power/shieldwallgen/can_be_unfasten_wrench(mob/user, silent)
if(active)
if(!silent)
to_chat(user, span_warning("Turn off the shield generator first!"))
return FAILED_UNFASTEN
return ..()
/obj/machinery/power/shieldwallgen/wrench_act(mob/living/user, obj/item/tool)
var/unfasten_result = default_unfasten_wrench(user, tool, time = 0)
update_cable_icons_on_turf(get_turf(src))
if(unfasten_result == SUCCESSFUL_UNFASTEN && anchored)
connect_to_network()
return ITEM_INTERACT_SUCCESS
/obj/machinery/power/shieldwallgen/screwdriver_act(mob/user, obj/item/tool)
if(!panel_open && locked)
balloon_alert(user, "unlock first!")
return
update_appearance(UPDATE_OVERLAYS)
return default_deconstruction_screwdriver(user, icon_state, icon_state, tool)
/obj/machinery/power/shieldwallgen/crowbar_act(mob/user, obj/item/tool)
if(active)
return
return default_deconstruction_crowbar(tool)
/obj/machinery/power/shieldwallgen/attackby(obj/item/W, mob/user, list/modifiers, list/attack_modifiers)
. = ..()
if(W.GetID())
if(allowed(user) && !(obj_flags & EMAGGED))
locked = !locked
balloon_alert(user, "[locked ? "locked!" : "unlocked"]")
else if(obj_flags & EMAGGED)
balloon_alert(user, "malfunctioning!")
else
balloon_alert(user, "no access!")
return
add_fingerprint(user)
if(is_wire_tool(W) && panel_open)
wires.interact(user)
return
/obj/machinery/power/shieldwallgen/interact(mob/user)
. = ..()
if(.)
return
if(!anchored)
balloon_alert(user, "not secured!")
return
if(locked && !HAS_SILICON_ACCESS(user))
balloon_alert(user, "locked!")
return
if(!powernet)
balloon_alert(user, "needs to be powered by wire!")
return
if(panel_open)
balloon_alert(user, "panel open!")
return
if(active)
user.visible_message(span_notice("[user] turned \the [src] off."), \
span_notice("You turn off \the [src]."), \
span_hear("You hear heavy droning fade out."))
deactivate()
user.log_message("deactivated [src].", LOG_GAME)
else
user.visible_message(span_notice("[user] turned \the [src] on."), \
span_notice("You turn on \the [src]."), \
span_hear("You hear heavy droning."))
activate()
user.log_message("activated [src].", LOG_GAME)
add_fingerprint(user)
/obj/machinery/power/shieldwallgen/emag_act(mob/user, obj/item/card/emag/emag_card)
if(obj_flags & EMAGGED)
to_chat(user, span_warning("The access controller is damaged!"))
return FALSE
obj_flags |= EMAGGED
locked = FALSE
playsound(src, SFX_SPARKS, 100, TRUE, SHORT_RANGE_SOUND_EXTRARANGE)
balloon_alert(user, "access controller shorted")
return TRUE
/// Turn the machine on with side effects
/obj/machinery/power/shieldwallgen/proc/activate()
active = ACTIVE_SETUPFIELDS
AddElement(/datum/element/give_turf_traits, string_list(list(TRAIT_CONTAINMENT_FIELD)))
/// Turn the machine off with side effects
/obj/machinery/power/shieldwallgen/proc/deactivate()
active = FALSE
for(var/d in GLOB.cardinals)
cleanup_field(d)
update_appearance()
RemoveElement(/datum/element/give_turf_traits, string_list(list(TRAIT_CONTAINMENT_FIELD)))
//////////////Containment Field START
/obj/machinery/shieldwall
name = "shield wall"
desc = "An energy shield."
icon = 'icons/effects/effects.dmi'
icon_state = "shieldwall"
density = TRUE
resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
light_range = 2.5
light_power = 0.7
light_color = LIGHT_COLOR_BLUE
var/primary_direction = NONE
var/needs_power = FALSE
var/obj/machinery/power/shieldwallgen/gen_primary
var/obj/machinery/power/shieldwallgen/gen_secondary
/obj/machinery/shieldwall/Initialize(mapload, obj/machinery/power/shieldwallgen/first_gen, obj/machinery/power/shieldwallgen/second_gen)
. = ..()
gen_primary = first_gen
gen_secondary = second_gen
if(gen_primary && gen_secondary)
needs_power = TRUE
setDir(get_dir(gen_primary, gen_secondary))
for(var/mob/living/L in get_turf(src))
visible_message(span_danger("\The [src] is suddenly occupying the same space as \the [L]!"))
L.investigate_log("has been gibbed by [src].", INVESTIGATE_DEATHS)
L.gib(DROP_ALL_REMAINS)
RegisterSignal(src, COMSIG_ATOM_SINGULARITY_TRY_MOVE, PROC_REF(block_singularity))
AddElement(/datum/element/give_turf_traits, string_list(list(TRAIT_CONTAINMENT_FIELD)))
/obj/machinery/shieldwall/Destroy()
gen_primary = null
gen_secondary = null
return ..()
/obj/machinery/shieldwall/update_overlays()
. = ..()
. += emissive_appearance(icon, icon_state, src, alpha = 200)
/obj/machinery/shieldwall/process()
if(needs_power)
if(!gen_primary || !gen_primary.active || !gen_secondary || !gen_secondary.active)
qdel(src)
return
drain_power(10)
/obj/machinery/shieldwall/play_attack_sound(damage_amount, damage_type = BRUTE, damage_flag = 0)
switch(damage_type)
if(BURN)
playsound(loc, 'sound/effects/empulse.ogg', 75, TRUE)
if(BRUTE)
playsound(loc, 'sound/effects/empulse.ogg', 75, TRUE)
//the shield wall is immune to damage but it drains the stored power of the generators.
/obj/machinery/shieldwall/take_damage(damage_amount, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, attack_dir)
. = ..()
if(damage_type == BRUTE || damage_type == BURN)
drain_power(damage_amount)
/// succs power from the connected shield wall generator
/obj/machinery/shieldwall/proc/drain_power(drain_amount)
if(needs_power && gen_primary)
gen_primary.add_load(drain_amount * 0.5)
if(gen_secondary) //using power may cause us to be destroyed
gen_secondary.add_load(drain_amount * 0.5)
/obj/machinery/shieldwall/proc/block_singularity()
SIGNAL_HANDLER
return SINGULARITY_TRY_MOVE_BLOCK
/obj/machinery/shieldwall/CanAllowThrough(atom/movable/mover, border_dir)
. = ..()
if(istype(mover) && (mover.pass_flags & PASSGLASS))
return prob(20)
else
if(isprojectile(mover))
return prob(10)
#undef ACTIVE_SETUPFIELDS
#undef ACTIVE_HASFIELDS
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