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Bubberstation/code/game/objects/items/pneumaticCannon.dm
MrMelbert bc2215667f Re-refactors batons / Refactors attack chain force modifiers (#90809) 
Melee attack chain now has a list passed along with it,
`attack_modifiers`, which you can stick force modifiers to change the
resulting attack

This is basically a soft implementation of damage packets until a more
definitive pr, but one that only applies to item attack chain, and not
unarmed attacks.

This change was done to facilitate a baton refactor - batons no longer
hack together their own attack chain, and are now integrated straight
into the real attack chain. This refactor itself was done because batons
don't send any attack signals, which has been annoying in the past (for
swing combat).

🆑 Melbert
refactor: Batons have been refactored again. Baton stuns now properly
count as an attack, when before it was a nothing. Report any oddities,
particularly in regards to harmbatonning vs normal batonning.
refactor: The method of adjusting item damage mid-attack has been
refactored - some affected items include the Nullblade and knives.
Report any strange happenings with damage numbers.
refactor: A few objects have been moved to the new interaction chain -
records consoles, mawed crucible, alien weeds and space vines, hedges,
restaurant portals, and some mobs - to name a few.
fix: Spears only deal bonus damage against secure lockers, not all
closet types (including crates)
/🆑
2025-05-22 21:30:07 -04:00

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#define PCANNON_FIREALL 1
#define PCANNON_FILO 2
#define PCANNON_FIFO 3
///Defines for the pressure strength of the cannon
#define LOW_PRESSURE 1
#define MID_PRESSURE 2
#define HIGH_PRESSURE 3
/obj/item/pneumatic_cannon
name = "pneumatic cannon"
desc = "A gas-powered cannon that can fire any object loaded into it."
w_class = WEIGHT_CLASS_BULKY
force = 8 //Very heavy
attack_verb_continuous = list("bludgeons", "smashes", "beats")
attack_verb_simple = list("bludgeon", "smash", "beat")
icon = 'icons/obj/weapons/pneumaticCannon.dmi'
icon_state = "pneumaticCannon"
inhand_icon_state = "bulldog"
lefthand_file = 'icons/mob/inhands/weapons/guns_lefthand.dmi'
righthand_file = 'icons/mob/inhands/weapons/guns_righthand.dmi'
armor_type = /datum/armor/item_pneumatic_cannon
var/maxWeightClass = 20 //The max weight of items that can fit into the cannon
var/loadedWeightClass = 0 //The weight of items currently in the cannon
var/obj/item/tank/internals/tank = null //The gas tank that is drawn from to fire things
var/gasPerThrow = 3 //How much gas is drawn from a tank's pressure to fire
var/list/loadedItems = list() //The items loaded into the cannon that will be fired out
var/pressure_setting = LOW_PRESSURE //How powerful the cannon is - higher pressure = more gas but more powerful throws
var/checktank = TRUE
var/range_multiplier = 1
var/throw_amount = 1 //How many items to throw per fire
var/fire_mode = PCANNON_FIFO
var/automatic = FALSE
var/needs_air = TRUE
var/clumsyCheck = TRUE
var/list/allowed_typecache //Leave as null to allow all.
var/charge_amount = 1
var/charge_ticks = 1
var/charge_tick = 0
var/charge_type
var/selfcharge = FALSE
var/fire_sound = 'sound/items/weapons/sonic_jackhammer.ogg'
var/spin_item = TRUE //Do the projectiles spin when launched?
trigger_guard = TRIGGER_GUARD_NORMAL
/datum/armor/item_pneumatic_cannon
fire = 60
acid = 50
/obj/item/pneumatic_cannon/Initialize(mapload)
. = ..()
if(selfcharge)
init_charge()
/obj/item/pneumatic_cannon/proc/init_charge() //wrapper so it can be vv'd easier
START_PROCESSING(SSobj, src)
/obj/item/pneumatic_cannon/process()
charge_tick++
if(charge_tick >= charge_ticks && charge_type)
fill_with_type(charge_type, charge_amount)
/obj/item/pneumatic_cannon/Destroy()
STOP_PROCESSING(SSobj, src)
return ..()
/obj/item/pneumatic_cannon/CanItemAutoclick()
return automatic
/obj/item/pneumatic_cannon/proc/pressure_setting_to_text(pressure_setting)
switch(pressure_setting)
if(LOW_PRESSURE)
return "low"
if(MID_PRESSURE)
return "medium"
if(HIGH_PRESSURE)
return "high"
else
CRASH("Invalid pressure setting: [pressure_setting]!")
/obj/item/pneumatic_cannon/examine(mob/user)
. = ..()
var/list/out = list()
if(!in_range(user, src))
out += span_notice("You'll need to get closer to see any more.")
return
for(var/obj/item/I in loadedItems)
out += span_info("[icon2html(I, user)] It has \a [I] loaded.")
CHECK_TICK
if(tank)
out += span_notice("[icon2html(tank, user)] It has \a [tank] mounted onto it. It could be removed with a <b>screwdriver</b>.")
if(needs_air == TRUE)
. += span_notice("Use a <b>wrench</b> to change the pressure level. Current output level is <b>[pressure_setting_to_text(pressure_setting)]</b>.")
. += out.Join("\n")
/obj/item/pneumatic_cannon/screwdriver_act(mob/living/user, obj/item/tool)
if(tank)
tool.play_tool_sound(src)
updateTank(tank, 1, user)
return TRUE
/obj/item/pneumatic_cannon/wrench_act(mob/living/user, obj/item/tool)
if(needs_air == FALSE)
return
playsound(src, 'sound/items/tools/ratchet.ogg', 50, TRUE)
pressure_setting = pressure_setting >= HIGH_PRESSURE ? LOW_PRESSURE : pressure_setting + 1
balloon_alert(user, "output level set to [pressure_setting_to_text(pressure_setting)]")
return TRUE
/obj/item/pneumatic_cannon/attackby(obj/item/W, mob/living/user, list/modifiers, list/attack_modifiers)
if(user.combat_mode)
return ..()
if(istype(W, /obj/item/tank/internals))
if(needs_air == FALSE)
return
if(!tank)
var/obj/item/tank/internals/IT = W
if(IT.volume <= 3)
to_chat(user, span_warning("\The [IT] is too small for \the [src]."))
return
updateTank(W, 0, user)
else if(W.type == type)
to_chat(user, span_warning("You're fairly certain that putting a pneumatic cannon inside another pneumatic cannon would cause a spacetime disruption."))
else if(loadedWeightClass >= maxWeightClass)
to_chat(user, span_warning("\The [src] can't hold any more items!"))
else if(isitem(W))
var/obj/item/IW = W
load_item(IW, user)
/obj/item/pneumatic_cannon/proc/can_load_item(obj/item/I, mob/user)
if(!istype(I)) //Players can't load non items, this allows for admin varedit inserts.
return TRUE
if(allowed_typecache && !is_type_in_typecache(I, allowed_typecache))
if(user)
to_chat(user, span_warning("[I] won't fit into [src]!"))
return
if((loadedWeightClass + I.w_class) > maxWeightClass) //Only make messages if there's a user
if(user)
to_chat(user, span_warning("\The [I] won't fit into \the [src]!"))
return FALSE
if(I.w_class > w_class)
if(user)
to_chat(user, span_warning("\The [I] is too large to fit into \the [src]!"))
return FALSE
return TRUE
/obj/item/pneumatic_cannon/proc/load_item(obj/item/I, mob/user)
if(!can_load_item(I, user))
return FALSE
if(user) //Only use transfer proc if there's a user, otherwise just set loc.
if(!user.transferItemToLoc(I, src))
return FALSE
to_chat(user, span_notice("You load \the [I] into \the [src]."))
else
I.forceMove(src)
loadedItems += I
if(isitem(I))
loadedWeightClass += I.w_class
else
loadedWeightClass++
return TRUE
/obj/item/pneumatic_cannon/interact_with_atom(atom/interacting_with, mob/living/user, list/modifiers)
if(user.combat_mode)
return ITEM_INTERACT_SKIP_TO_ATTACK
Fire(user, interacting_with)
return ITEM_INTERACT_SUCCESS
/obj/item/pneumatic_cannon/ranged_interact_with_atom(atom/interacting_with, mob/living/user, list/modifiers)
Fire(user, interacting_with)
return ITEM_INTERACT_SUCCESS
/obj/item/pneumatic_cannon/proc/Fire(mob/living/user, atom/target)
if(!istype(user) && !target)
return
var/discharge = 0
if(!can_trigger_gun(user))
return
if(!loadedItems || !loadedWeightClass)
to_chat(user, span_warning("\The [src] has nothing loaded."))
return
if(!tank && checktank)
to_chat(user, span_warning("\The [src] can't fire without a source of gas."))
return
if(HAS_TRAIT(user, TRAIT_PACIFISM))
to_chat(user, span_warning("You can't bring yourself to fire \the [src]! You don't want to risk harming anyone...") )
return
if(tank && !tank.remove_air(gasPerThrow * pressure_setting))
to_chat(user, span_warning("\The [src] lets out a weak hiss and doesn't react!"))
return
if(HAS_TRAIT(user, TRAIT_CLUMSY) && prob(75) && clumsyCheck && iscarbon(user))
var/mob/living/carbon/C = user
C.visible_message(span_warning("[C] loses [C.p_their()] grip on [src], causing it to go off!"), span_userdanger("[src] slips out of your hands and goes off!"))
C.dropItemToGround(src, TRUE)
if(prob(10))
target = get_turf(user)
else
var/list/possible_targets = range(3,src)
target = pick(possible_targets)
discharge = 1
if(!discharge)
user.visible_message(span_danger("[user] fires \the [src]!"), \
span_danger("You fire \the [src]!"))
log_combat(user, target, "fired at", src)
var/turf/T = get_target(target, get_turf(src))
playsound(src, fire_sound, 50, TRUE)
fire_items(T, user)
if(pressure_setting >= 3 && iscarbon(user))
var/mob/living/carbon/C = user
C.visible_message(span_warning("[C] is thrown down by the force of the cannon!"), span_userdanger("[src] slams into your shoulder, knocking you down!"))
C.Paralyze(60)
/obj/item/pneumatic_cannon/proc/fire_items(turf/target, mob/user)
if(fire_mode == PCANNON_FIREALL)
for(var/obj/item/ITD in loadedItems) //Item To Discharge
if(!throw_item(target, ITD, user))
break
else
for(var/i in 1 to throw_amount)
if(!loadedItems.len)
break
var/atom/movable/I
if(fire_mode == PCANNON_FILO)
I = loadedItems[loadedItems.len]
else
I = loadedItems[1]
if(!throw_item(target, I, user))
break
/obj/item/pneumatic_cannon/proc/throw_item(turf/target, atom/movable/AM, mob/user)
if(!istype(AM))
return FALSE
loadedItems -= AM
if(isitem(AM))
var/obj/item/I = AM
loadedWeightClass -= I.w_class
else
loadedWeightClass--
AM.forceMove(get_turf(src))
AM.throw_at(target, pressure_setting * 10 * range_multiplier, pressure_setting * 2, user, spin_item)
return TRUE
/obj/item/pneumatic_cannon/proc/get_target(turf/target, turf/starting)
if(range_multiplier == 1)
return target
var/x_o = (target.x - starting.x)
var/y_o = (target.y - starting.y)
var/new_x = clamp((starting.x + (x_o * range_multiplier)), 0, world.maxx)
var/new_y = clamp((starting.y + (y_o * range_multiplier)), 0, world.maxy)
var/turf/newtarget = locate(new_x, new_y, starting.z)
return newtarget
/obj/item/pneumatic_cannon/Exited(atom/movable/gone, direction)
. = ..()
if(loadedItems.Remove(gone))
var/obj/item/item = gone
if(istype(item))
loadedWeightClass -= item.w_class
else
loadedWeightClass--
else if (gone == tank)
tank = null
update_appearance()
/obj/item/pneumatic_cannon/ghetto //Obtainable by improvised methods; more gas per use, less capacity
name = "improvised pneumatic cannon"
desc = "A gas-powered, object-firing cannon made out of common parts."
force = 5
maxWeightClass = 10
gasPerThrow = 5
/obj/item/pneumatic_cannon/proc/updateTank(obj/item/tank/internals/thetank, removing = 0, mob/living/carbon/human/user)
if(removing)
if(!tank)
return
to_chat(user, span_notice("You detach \the [thetank] from \the [src]."))
tank.forceMove(user.drop_location())
user.put_in_hands(tank)
tank = null
if(!removing)
if(tank)
to_chat(user, span_warning("\The [src] already has a tank."))
return
if(!user.transferItemToLoc(thetank, src))
return
to_chat(user, span_notice("You hook \the [thetank] up to \the [src]."))
tank = thetank
update_appearance()
/obj/item/pneumatic_cannon/update_overlays()
. = ..()
if(!tank)
return
. += tank.icon_state
/obj/item/pneumatic_cannon/proc/fill_with_type(type, amount)
if(!ispath(type, /obj) && !ispath(type, /mob))
return FALSE
var/loaded = 0
for(var/i in 1 to amount)
var/obj/item/I = new type
if(!load_item(I, null))
qdel(I)
return loaded
loaded++
CHECK_TICK
/obj/item/pneumatic_cannon/pie
name = "pie cannon"
desc = "Load cream pie for optimal results."
force = 10
icon_state = "piecannon"
gasPerThrow = 0
checktank = FALSE
range_multiplier = 3
fire_mode = PCANNON_FIFO
throw_amount = 1
maxWeightClass = 150 //50 pies. :^)
needs_air = FALSE
clumsyCheck = FALSE
var/static/list/pie_typecache = typecacheof(/obj/item/food/pie)
/obj/item/pneumatic_cannon/pie/Initialize(mapload)
. = ..()
allowed_typecache = pie_typecache
/obj/item/pneumatic_cannon/pie/selfcharge
automatic = TRUE
selfcharge = TRUE
charge_type = /obj/item/food/pie/cream
maxWeightClass = 60 //20 pies.
/obj/item/pneumatic_cannon/pie/selfcharge/cyborg
name = "low velocity pie cannon"
automatic = FALSE
charge_type = /obj/item/food/pie/cream/nostun
maxWeightClass = 6 //2 pies
charge_ticks = 2 //4 second/pie
#undef PCANNON_FIREALL
#undef PCANNON_FILO
#undef PCANNON_FIFO
#undef LOW_PRESSURE
#undef MID_PRESSURE
#undef HIGH_PRESSURE
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