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Bubberstation/code/game/objects/obj_defense.dm
Emmett Gaines 67c89fa1ab Greyscale Mat Datum Stationary Smooth Tanks (#59556) 
Stationary gas tanks have been in a terrible place for a long time, this addresses some of the issues with a more balance focused change coming in a second mapping pr after this one.

Stationary gas tanks have been made constructable and act similarly to canisters in that they can be damaged, repaired, and over-pressurized to explode. Additionally, they can be made with any rigid material and their stats depend on that material. A glass tank is going to have far less pressure capability than one made of plasteel.

In terms of gameplay there are two main differences now: Adjacent stationary tanks will merge together both graphically and with their internal storage. Any port on any of the tanks can access this shared storage. Also stationary tanks no longer magically have many times the volume for gas as the tile it's in, instead they have a pressure cap and a normal amount of volume.

Of interest to coders this pr also adds a generic grouping datum that acts similar to how pipe networks work. It maintains a listing of all adjacent objects whose type falls within a specified filter. In this case it's used for the gas tanks to know of every other tank in the group. I'll be looking into spreading it's usage elsewhere where this can replace existing one off systems.

Some (de)construction:
First a glass tank is constructed which is then immediately damaged by the high pressure in the gas storage that is now shared. After repairing it for a moment another metal tank is built.
2021-06-26 19:26:33 -07:00

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/// The essential proc to call when an obj must receive damage of any kind.
/obj/proc/take_damage(damage_amount, damage_type = BRUTE, damage_flag = "", sound_effect = TRUE, attack_dir, armour_penetration = 0)
if(QDELETED(src))
stack_trace("[src] taking damage after deletion")
return
if(sound_effect)
play_attack_sound(damage_amount, damage_type, damage_flag)
if((resistance_flags & INDESTRUCTIBLE) || obj_integrity <= 0)
return
damage_amount = run_obj_armor(damage_amount, damage_type, damage_flag, attack_dir, armour_penetration)
if(damage_amount < DAMAGE_PRECISION)
return
if(SEND_SIGNAL(src, COMSIG_OBJ_TAKE_DAMAGE, damage_amount, damage_type, damage_flag, sound_effect, attack_dir, armour_penetration) & COMPONENT_NO_TAKE_DAMAGE)
return
. = damage_amount
update_integrity(obj_integrity - damage_amount)
//BREAKING FIRST
if(integrity_failure && obj_integrity <= integrity_failure * max_integrity)
obj_break(damage_flag)
//DESTROYING SECOND
if(obj_integrity <= 0)
obj_destruction(damage_flag)
/// Proc for recovering obj_integrity. Returns the amount repaired by
/obj/proc/repair_damage(amount)
if(amount <= 0) // We only recover here
return
var/new_integrity = min(max_integrity, obj_integrity + amount)
. = new_integrity - obj_integrity
update_integrity(new_integrity)
if(integrity_failure && obj_integrity > integrity_failure * max_integrity)
obj_fix()
/// Handles the integrity of an object changing. This must be called instead of changing integrity directly.
/obj/proc/update_integrity(new_value)
SHOULD_NOT_OVERRIDE(TRUE)
var/old_value = obj_integrity
new_value = max(0, new_value)
if(obj_integrity == new_value)
return
obj_integrity = new_value
SEND_SIGNAL(src, COMSIG_OBJ_INTEGRITY_CHANGED, old_value, new_value)
/// This mostly exists to keep obj_integrity private. Might be useful in the future.
/obj/proc/get_integrity()
SHOULD_BE_PURE(TRUE)
return obj_integrity
///returns the damage value of the attack after processing the obj's various armor protections
/obj/proc/run_obj_armor(damage_amount, damage_type, damage_flag = 0, attack_dir, armour_penetration = 0)
if(damage_flag == MELEE && damage_amount < damage_deflection)
return 0
switch(damage_type)
if(BRUTE)
if(BURN)
else
return 0
var/armor_protection = 0
if(damage_flag)
armor_protection = armor.getRating(damage_flag)
if(armor_protection) //Only apply weak-against-armor/hollowpoint effects if there actually IS armor.
armor_protection = clamp(armor_protection - armour_penetration, min(armor_protection, 0), 100)
return round(damage_amount * (100 - armor_protection)*0.01, DAMAGE_PRECISION)
///the sound played when the obj is damaged.
/obj/proc/play_attack_sound(damage_amount, damage_type = BRUTE, damage_flag = 0)
switch(damage_type)
if(BRUTE)
if(damage_amount)
playsound(src, 'sound/weapons/smash.ogg', 50, TRUE)
else
playsound(src, 'sound/weapons/tap.ogg', 50, TRUE)
if(BURN)
playsound(src.loc, 'sound/items/welder.ogg', 100, TRUE)
/obj/hitby(atom/movable/AM, skipcatch, hitpush, blocked, datum/thrownthing/throwingdatum)
..()
take_damage(AM.throwforce, BRUTE, MELEE, 1, get_dir(src, AM))
/obj/ex_act(severity, target)
if(resistance_flags & INDESTRUCTIBLE)
return
. = ..() //contents explosion
if(QDELETED(src))
return
if(target == src)
take_damage(INFINITY, BRUTE, BOMB, 0)
return
switch(severity)
if(EXPLODE_DEVASTATE)
take_damage(INFINITY, BRUTE, BOMB, 0)
if(EXPLODE_HEAVY)
take_damage(rand(100, 250), BRUTE, BOMB, 0)
if(EXPLODE_LIGHT)
take_damage(rand(10, 90), BRUTE, BOMB, 0)
/obj/bullet_act(obj/projectile/P)
. = ..()
playsound(src, P.hitsound, 50, TRUE)
var/no_damage = FALSE
if(!QDELETED(src) && !take_damage(P.damage, P.damage_type, P.flag, 0, turn(P.dir, 180), P.armour_penetration)) //Bullet on_hit effect might have already destroyed this object
no_damage = TRUE
if(P.suppressed != SUPPRESSED_VERY)
visible_message(span_danger("[src] is hit by \a [P][no_damage ? ", which doesn't leave a mark" : ""]!"), null, null, COMBAT_MESSAGE_RANGE)
///Called to get the damage that hulks will deal to the obj.
/obj/proc/hulk_damage()
return 150 //the damage hulks do on punches to this object, is affected by melee armor
/obj/attack_hulk(mob/living/carbon/human/user)
..()
user.visible_message(span_danger("[user] smashes [src]!"), span_danger("You smash [src]!"), null, COMBAT_MESSAGE_RANGE)
if(density)
playsound(src, 'sound/effects/meteorimpact.ogg', 100, TRUE)
else
playsound(src, 'sound/effects/bang.ogg', 50, TRUE)
take_damage(hulk_damage(), BRUTE, MELEE, 0, get_dir(src, user))
return TRUE
/obj/blob_act(obj/structure/blob/B)
if (!..())
return
if(isturf(loc))
var/turf/T = loc
if(T.intact && HAS_TRAIT(src, TRAIT_T_RAY_VISIBLE))
return
take_damage(400, BRUTE, MELEE, 0, get_dir(src, B))
/obj/proc/attack_generic(mob/user, damage_amount = 0, damage_type = BRUTE, damage_flag = 0, sound_effect = 1, armor_penetration = 0) //used by attack_alien, attack_animal, and attack_slime
user.do_attack_animation(src)
user.changeNext_move(CLICK_CD_MELEE)
return take_damage(damage_amount, damage_type, damage_flag, sound_effect, get_dir(src, user), armor_penetration)
/obj/attack_alien(mob/living/carbon/alien/humanoid/user, list/modifiers)
if(attack_generic(user, 60, BRUTE, MELEE, 0))
playsound(src.loc, 'sound/weapons/slash.ogg', 100, TRUE)
/obj/attack_animal(mob/living/simple_animal/user, list/modifiers)
if(!user.melee_damage_upper && !user.obj_damage)
user.emote("custom", message = "[user.friendly_verb_continuous] [src].")
return FALSE
else
var/play_soundeffect = TRUE
if(user.environment_smash)
play_soundeffect = FALSE
if(user.obj_damage)
. = attack_generic(user, user.obj_damage, user.melee_damage_type, MELEE, play_soundeffect, user.armour_penetration)
else
. = attack_generic(user, rand(user.melee_damage_lower,user.melee_damage_upper), user.melee_damage_type, MELEE, play_soundeffect, user.armour_penetration)
if(. && !play_soundeffect)
playsound(src, 'sound/effects/meteorimpact.ogg', 100, TRUE)
/obj/force_pushed(atom/movable/pusher, force = MOVE_FORCE_DEFAULT, direction)
return TRUE
/obj/move_crushed(atom/movable/pusher, force = MOVE_FORCE_DEFAULT, direction)
collision_damage(pusher, force, direction)
return TRUE
/obj/proc/collision_damage(atom/movable/pusher, force = MOVE_FORCE_DEFAULT, direction)
var/amt = max(0, ((force - (move_resist * MOVE_FORCE_CRUSH_RATIO)) / (move_resist * MOVE_FORCE_CRUSH_RATIO)) * 10)
take_damage(amt, BRUTE)
/obj/attack_slime(mob/living/simple_animal/slime/user)
if(!user.is_adult)
return
attack_generic(user, rand(10, 15), BRUTE, MELEE, 1)
/obj/singularity_act()
SSexplosions.high_mov_atom += src
if(src && !QDELETED(src))
qdel(src)
return 2
///// ACID
GLOBAL_DATUM_INIT(acid_overlay, /mutable_appearance, mutable_appearance('icons/effects/effects.dmi', "acid"))
///the obj's reaction when touched by acid
/obj/acid_act(acidpwr, acid_volume)
. = ..()
if((resistance_flags & UNACIDABLE) || (acid_volume <= 0) || acidpwr <= 0)
return FALSE
AddComponent(/datum/component/acid, acidpwr, acid_volume)
return TRUE
///called when the obj is destroyed by acid.
/obj/proc/acid_melt()
deconstruct(FALSE)
//// FIRE
///Called when the obj is exposed to fire.
/obj/fire_act(exposed_temperature, exposed_volume)
if(isturf(loc))
var/turf/T = loc
if(T.intact && HAS_TRAIT(src, TRAIT_T_RAY_VISIBLE))
return
if(exposed_temperature && !(resistance_flags & FIRE_PROOF))
take_damage(clamp(0.02 * exposed_temperature, 0, 20), BURN, FIRE, 0)
if(!(resistance_flags & ON_FIRE) && (resistance_flags & FLAMMABLE) && !(resistance_flags & FIRE_PROOF))
resistance_flags |= ON_FIRE
SSfire_burning.processing[src] = src
update_appearance()
return 1
return ..()
///called when the obj is destroyed by fire
/obj/proc/burn()
if(resistance_flags & ON_FIRE)
SSfire_burning.processing -= src
deconstruct(FALSE)
///Called when the obj is no longer on fire.
/obj/proc/extinguish()
if(resistance_flags & ON_FIRE)
resistance_flags &= ~ON_FIRE
update_appearance()
SSfire_burning.processing -= src
///Called when the obj is hit by a tesla bolt.
/obj/zap_act(power, zap_flags)
if(QDELETED(src))
return 0
obj_flags |= BEING_SHOCKED
addtimer(CALLBACK(src, .proc/reset_shocked), 1 SECONDS)
return power / 2
//The surgeon general warns that being buckled to certain objects receiving powerful shocks is greatly hazardous to your health
///Only tesla coils, vehicles, and grounding rods currently call this because mobs are already targeted over all other objects, but this might be useful for more things later.
/obj/proc/zap_buckle_check(strength)
if(has_buckled_mobs())
for(var/m in buckled_mobs)
var/mob/living/buckled_mob = m
buckled_mob.electrocute_act((clamp(round(strength/400), 10, 90) + rand(-5, 5)), src, flags = SHOCK_TESLA)
/obj/proc/reset_shocked()
obj_flags &= ~BEING_SHOCKED
///the obj is deconstructed into pieces, whether through careful disassembly or when destroyed.
/obj/proc/deconstruct(disassembled = TRUE)
SEND_SIGNAL(src, COMSIG_OBJ_DECONSTRUCT, disassembled)
qdel(src)
/// Called after the obj takes damage and integrity is below integrity_failure level
/obj/proc/obj_break(damage_flag)
SHOULD_CALL_PARENT(TRUE)
SEND_SIGNAL(src, COMSIG_OBJ_BREAK)
/// Called when integrity is repaired above the breaking point having been broken before
/obj/proc/obj_fix()
SHOULD_CALL_PARENT(TRUE)
SEND_SIGNAL(src, COMSIG_OBJ_FIX)
///what happens when the obj's integrity reaches zero.
/obj/proc/obj_destruction(damage_flag)
if(damage_flag == ACID)
acid_melt()
else if(damage_flag == FIRE)
burn()
else
deconstruct(FALSE)
///changes max_integrity while retaining current health percentage, returns TRUE if the obj got broken.
/obj/proc/modify_max_integrity(new_max, can_break = TRUE, damage_type = BRUTE)
var/current_integrity = obj_integrity
var/current_max = max_integrity
if(current_integrity != 0 && current_max != 0)
var/percentage = current_integrity / current_max
current_integrity = max(1, round(percentage * new_max)) //don't destroy it as a result
obj_integrity = current_integrity
max_integrity = new_max
if(can_break && integrity_failure && current_integrity <= integrity_failure * max_integrity)
obj_break(damage_type)
return TRUE
return FALSE
///returns how much the object blocks an explosion. Used by subtypes.
/obj/proc/GetExplosionBlock()
CRASH("Unimplemented GetExplosionBlock()")
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