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Bubberstation/code/game/objects/items/implants/implant_explosive.dm
Jacquerel f47733d0e3 Final Objective: Battle Royale (#82258) 
## About The Pull Request

Adds a new final objective option with a classic premise; the forced
battle to the death.
The concept is that the Syndicate will provide you with an implanter
tool you can use on an arbitrary number of crew members. Once you have
at least 6 (though there is no ceiling) you can activate the implants to
start the Battle Royale and broadcast the perspectives of everyone you
implanted live to the entertainment monitor.

After activation these implants cause you to explode upon death. If at
the end of 10 minutes, more than one person remains unexploded then all
of the remaining implants will detonate simultaneously.
Additionally, one of the station's departments (Medbay, Cargo, Science,
or Engineering) will be chosen as the arena. If after 5 minutes pass
you're not within that department (or if you leave it after that time
has passed) then you will be killed.

The Syndicate plan on both using the recorded footage to study
Nanotrasen technology, and also to sell it as an underground blood
sport, and so have employed a pirate broadcasting station to provide
colour commentary.

The implantation is silent, however it requires you and your target to
be adjacent and stood still for one and a half seconds.
Once implanted, it will occasionally itch and eventually signal to the
implantee that something is up, so once you start implanting someone
you're on a soft timer until you are given away. You can also implant
yourself if you want to do that for some reason.

Removing an implant from someone has a 70% chance of setting it off
instantly, but it _is_ possible. If the implant is exposed to EMP, this
value is randomised between 0 and 100%. You could also try doing surgery
while the patient is wearing a bomb suit or something, that puzzle is
for you to solve and I'm not going to tell you the answers. I'm sure
you'll think of ones I haven't.

## Why It's Good For The Game

Adds a somewhat more down-to-earth but still hopefully exciting and
threatening option which should let people mess around with the sandbox.
The mutual death element provides some roleplaying prompts; nothing
actually _forces_ you to fight apart from fear of death and it may be
possible to find other ways to survive, or perform some kind of
solidarity behaviour with your fellow contestants. Maybe you'll try that
but one of your fellow contestants just wants to be the last survivor
anyway. Maybe you'll pretend you're setting up some kind of mutual
survivorship thing in order to make sure you're the sole survivor.
Gives some people to watch on the bar TV channel.
The crew apparently love playing Deathmatch while dead so we might as
well enable doing it while alive.

Also I'm going to follow this up with a separate PR to remove the Space
Dragon objective and it felt like it'd be a good idea to do one out one
in

## Changelog

🆑
add: Adds a new Final Objective where you force your fellow crew to
fight to the death on pain of... death.
/🆑
2024-04-07 16:37:40 -07:00

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/**
* Note that we can stack explosive implants and thus increase the payload's devastation radius. (https://github.com/tgstation/tgstation/pull/50674)
* That's why the three devastation values for the microbomb implant are balanced around in such a way
* that buying one macrobomb equals to buying 10 microbombs and stacking them.
*/
#define MICROBOMB_DELAY 0.7 SECONDS
#define MICROBOMB_EXPLOSION_LIGHT 2
#define MICROBOMB_EXPLOSION_HEAVY 0.8
#define MICROBOMB_EXPLOSION_DEVASTATE 0.4
/obj/item/implant/explosive
name = "microbomb implant"
desc = "And boom goes the weasel."
icon_state = "explosive"
actions_types = list(/datum/action/item_action/explosive_implant) //Explosive implant action is always available.
///Whether the implant's explosion sequence has been activated or not
var/active = FALSE
///The final countdown (delay before we explode)
var/delay = MICROBOMB_DELAY
///If the delay is equal or lower to MICROBOMB_DELAY (0.7 sec), the explosion will be instantaneous.
var/instant_explosion = TRUE
///Radius of weak devastation explosive impact
var/explosion_light = MICROBOMB_EXPLOSION_LIGHT
///Radius of medium devastation explosive impact
var/explosion_heavy = MICROBOMB_EXPLOSION_HEAVY
///Radius of heavy devastation explosive impact
var/explosion_devastate = MICROBOMB_EXPLOSION_DEVASTATE
///Whether the confirmation UI popup is active or not
var/popup = FALSE
///Do we rapidly increase the beeping speed as it gets closer to detonating?
var/panic_beep_sound = FALSE
///Do we disable paralysis upon activation
var/no_paralyze = FALSE
///Do we override other explosive implants?
var/master_implant = FALSE
///Will this implant notify ghosts when activated?
var/notify_ghosts = TRUE
///Do we tell people when they activated it?
var/announce_activation = TRUE
/obj/item/implant/explosive/proc/on_death(datum/source, gibbed)
SIGNAL_HANDLER
// There may be other signals that want to handle mob's death
// and the process of activating destroys the body, so let the other
// signal handlers at least finish. Also, the "delayed explosion"
// uses sleeps, which is bad for signal handlers to do.
INVOKE_ASYNC(src, PROC_REF(activate), "death")
/obj/item/implant/explosive/get_data()
return "<b>Implant Specifications:</b><BR> \
<b>Name:</b> Robust Corp RX-78 Employee Management Implant<BR> \
<b>Life:</b> Activates upon death.<BR> \
<b>Important Notes:</b> Explodes<BR> \
<HR> \
<b>Implant Details:</b><BR> \
<b>Function:</b> Contains a compact, electrically detonated explosive that detonates upon receiving a specially encoded signal or upon host death.<BR> \
<b>Special Features:</b> Explodes<BR>"
/obj/item/implant/explosive/activate(cause)
. = ..()
if(!cause || !imp_in || active)
return FALSE
if(cause == "action_button")
if(popup)
return FALSE
popup = TRUE
var/response = tgui_alert(imp_in, "Are you sure you want to activate your [name]? This will cause you to explode!", "[name] Confirmation", list("Yes", "No"))
popup = FALSE
if(response != "Yes")
return FALSE
if(cause == "death" && HAS_TRAIT(imp_in, TRAIT_PREVENT_IMPLANT_AUTO_EXPLOSION))
return FALSE
if(announce_activation)
to_chat(imp_in, span_notice("You activate your [name]."))
active = TRUE
var/turf/boomturf = get_turf(imp_in)
message_admins("[ADMIN_LOOKUPFLW(imp_in)] has activated their [name] at [ADMIN_VERBOSEJMP(boomturf)], with cause of [cause].")
//If the delay is shorter or equal to the default delay, just blow up already jeez
if(delay <= MICROBOMB_DELAY && instant_explosion)
explode()
return
timed_explosion()
/obj/item/implant/explosive/implant(mob/living/target, mob/user, silent = FALSE, force = FALSE)
for(var/target_implant in target.implants)
if(istype(target_implant, /obj/item/implant/explosive)) //we don't use our own type here, because macrobombs inherit this proc and need to be able to upgrade microbombs
var/obj/item/implant/explosive/other_implant = target_implant
if(other_implant.master_implant && master_implant) //we cant have two master implants at once
target.balloon_alert(user, "cannot fit implant!")
return FALSE
if(master_implant)
merge_implants(src, other_implant)
else
merge_implants(other_implant, src)
return TRUE
. = ..()
if(.)
RegisterSignal(target, COMSIG_LIVING_DEATH, PROC_REF(on_death))
/obj/item/implant/explosive/removed(mob/target, silent = FALSE, special = FALSE)
. = ..()
if(.)
UnregisterSignal(target, COMSIG_LIVING_DEATH)
/**
* Merges two explosive implants together, adding the stats of the latter to the former before qdeling the latter implant.
* kept_implant = the implant that is kept
* stat_implant = the implant which has it's stats added to kept_implant, before being deleted.
*/
/obj/item/implant/explosive/proc/merge_implants(obj/item/implant/explosive/kept_implant, obj/item/implant/explosive/stat_implant)
kept_implant.explosion_devastate += stat_implant.explosion_devastate
kept_implant.explosion_heavy += stat_implant.explosion_heavy
kept_implant.explosion_light += stat_implant.explosion_light
kept_implant.delay = min(kept_implant.delay + stat_implant.delay, 30 SECONDS)
qdel(stat_implant)
/**
* Explosive activation sequence for implants with a delay longer than 0.7 seconds.
* Make the implantee beep a few times, keel over and explode. Usually to a devastating effect.
*/
/obj/item/implant/explosive/proc/timed_explosion()
if (isnull(imp_in))
visible_message(span_warning("[src] starts beeping ominously!"))
else
imp_in.visible_message(span_warning("[imp_in] starts beeping ominously!"))
if(notify_ghosts)
notify_ghosts(
"[imp_in] is about to detonate their explosive implant!",
source = src,
header = "Tick Tick Tick...",
notify_flags = NOTIFY_CATEGORY_NOFLASH,
ghost_sound = 'sound/machines/warning-buzzer.ogg',
notify_volume = 75,
)
playsound(loc, 'sound/items/timer.ogg', 30, FALSE)
if(!panic_beep_sound)
sleep(delay * 0.25)
if(imp_in && !imp_in.stat && !no_paralyze)
imp_in.visible_message(span_warning("[imp_in] doubles over in pain!"))
imp_in.Paralyze(14 SECONDS)
//total of 4 bomb beeps, and we've already beeped once
var/bomb_beeps_until_boom = 3
if(!panic_beep_sound)
while(bomb_beeps_until_boom > 0)
//for extra spice
var/beep_volume = 35
playsound(loc, 'sound/items/timer.ogg', beep_volume, vary = FALSE)
sleep(delay * 0.25)
bomb_beeps_until_boom--
beep_volume += 5
explode()
else
addtimer(CALLBACK(src, PROC_REF(explode)), delay)
while(delay > 1) //so we dont accidentally enter an infinite sleep
var/beep_volume = 35
playsound(loc, 'sound/items/timer.ogg', beep_volume, vary = FALSE)
sleep(delay * 0.2)
delay -= delay * 0.2
beep_volume += 5
///When called, just explodes
/obj/item/implant/explosive/proc/explode(atom/override_explode_target = null)
explosion_devastate = round(explosion_devastate)
explosion_heavy = round(explosion_heavy)
explosion_light = round(explosion_light)
explosion(override_explode_target || src, devastation_range = explosion_devastate, heavy_impact_range = explosion_heavy, light_impact_range = explosion_light, flame_range = explosion_light, flash_range = explosion_light, explosion_cause = src)
var/mob/living/kill_mob = isliving(override_explode_target) ? override_explode_target : imp_in
if(!isnull(kill_mob))
kill_mob.investigate_log("has been gibbed by an explosive implant.", INVESTIGATE_DEATHS)
kill_mob.gib(DROP_ORGANS|DROP_BODYPARTS)
qdel(src)
///Macrobomb has the strength and delay of 10 microbombs
/obj/item/implant/explosive/macro
name = "macrobomb implant"
desc = "And boom goes the weasel. And everything else nearby."
icon_state = "explosive"
delay = 10 * MICROBOMB_DELAY
explosion_light = 10 * MICROBOMB_EXPLOSION_LIGHT
explosion_heavy = 10 * MICROBOMB_EXPLOSION_HEAVY
explosion_devastate = 10 * MICROBOMB_EXPLOSION_DEVASTATE
///Microbomb which prevents you from going into critical condition but also explodes after a timer when you reach critical condition in the first place.
/obj/item/implant/explosive/deniability
name = "tactical deniability implant"
desc = "An enhanced version of the microbomb that directly plugs into the brain. No downsides, promise!"
delay = 10 SECONDS
panic_beep_sound = TRUE
no_paralyze = TRUE
master_implant = TRUE
/obj/item/implant/explosive/deniability/implant(mob/living/target, mob/user, silent = FALSE, force = FALSE)
. = ..()
if(.)
RegisterSignal(target, COMSIG_LIVING_HEALTH_UPDATE, PROC_REF(check_health))
target.add_traits(list(TRAIT_NOSOFTCRIT, TRAIT_NOHARDCRIT), IMPLANT_TRAIT)
/obj/item/implant/explosive/deniability/removed(mob/target, silent = FALSE, special = FALSE)
. = ..()
if(.)
UnregisterSignal(target, COMSIG_LIVING_HEALTH_UPDATE)
target.remove_traits(list(TRAIT_NOSOFTCRIT, TRAIT_NOHARDCRIT), IMPLANT_TRAIT)
/obj/item/implant/explosive/deniability/proc/check_health(mob/living/source)
SIGNAL_HANDLER
if(source.health < source.crit_threshold)
INVOKE_ASYNC(src, PROC_REF(activate), "deniability")
/obj/item/implant/explosive/deathmatch
name = "deathmatch microbomb implant"
delay = 0.5 SECONDS
actions_types = null
instant_explosion = FALSE
notify_ghosts = FALSE
/obj/item/implanter/explosive
name = "implanter (microbomb)"
imp_type = /obj/item/implant/explosive
/obj/item/implantcase/explosive
name = "implant case - 'Explosive'"
desc = "A glass case containing an explosive implant."
imp_type = /obj/item/implant/explosive
/obj/item/implanter/explosive_macro
name = "implanter (macrobomb)"
imp_type = /obj/item/implant/explosive/macro
/obj/item/implanter/tactical_deniability
name = "implanter (tactical deniability)"
imp_type = /obj/item/implant/explosive/deniability
/datum/action/item_action/explosive_implant
check_flags = NONE
name = "Activate Explosive Implant"
#undef MICROBOMB_DELAY
#undef MICROBOMB_EXPLOSION_LIGHT
#undef MICROBOMB_EXPLOSION_HEAVY
#undef MICROBOMB_EXPLOSION_DEVASTATE
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