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Bubberstation/code/modules/wiremod/shell/gun.dm
MrMelbert d755b70d76 Removes bad nodamage var from projectiles, fixes Juggernaut / Rust Walker projectiles doing zero damage (#73806)
## About The Pull Request

- Juggernaut and Rust Walker projectiles were subtyped off of magic,
which is `nodamage`.

- The juggernaut actually had a copy+paste error with their type
`on_hit` which caused none of their special effects on hit ("relative
patching catches this")

- Then I realized projectiles have this var `nodamage` which is, for all
intents and purposes, just `damage > 0`. it's not checked for pacifism,
it's just that. This is dumb. So very dumb, so I removed it.
- There are, however, a few situations which used it in a unique way,
such as the blast wave cannon. This is why I replaced it with a proc,
`is_hostile_projectile`, for certain situations to actually find out if
the projectile is damaging. Projectiles can override this on a per type
basis by default, damaging projectiles = hostile.
- This has a chance to break some things, but I ... kinda doubt it will.

Fixes #73756

## Why It's Good For The Game

Projectiles that act as they should, less dumb vars

## Changelog

🆑 Melbert
fix: Fixes Juggernaut / Rust Walker projectiles doing zero damage
fix: Fixes Juggernaut projectiles not doing bonus damage to nearby
structures
code: Removed projectile nodamage var, replaces it with just checking
for damage
/🆑
2023-03-10 17:51:31 -07:00

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/**
* # Circuit Gun
*
* A gun that lets you fire projectiles to enact circuitry.
*/
/obj/item/gun/energy/wiremod_gun
name = "circuit gun"
desc = "A gun that fires projectiles able to control circuitry. It can recharge using power from an attached circuit."
icon = 'icons/obj/wiremod.dmi'
icon_state = "setup_gun"
ammo_type = list(/obj/item/ammo_casing/energy/wiremod_gun)
cell_type = /obj/item/stock_parts/cell/emproof/wiremod_gun
item_flags = NONE
light_system = MOVABLE_LIGHT_DIRECTIONAL
light_on = FALSE
automatic_charge_overlays = FALSE
trigger_guard = TRIGGER_GUARD_ALLOW_ALL
gun_flags = NOT_A_REAL_GUN
/obj/item/ammo_casing/energy/wiremod_gun
projectile_type = /obj/projectile/energy/wiremod_gun
harmful = FALSE
select_name = "circuit"
fire_sound = 'sound/weapons/blaster.ogg'
/obj/projectile/energy/wiremod_gun
name = "scanning beam"
icon_state = "energy"
damage = 0
range = 7
/obj/item/stock_parts/cell/emproof/wiremod_gun
maxcharge = 100
/obj/item/gun/energy/wiremod_gun/Initialize(mapload)
. = ..()
AddComponent(/datum/component/shell, list(
new /obj/item/circuit_component/wiremod_gun()
), SHELL_CAPACITY_MEDIUM)
/obj/item/circuit_component/wiremod_gun
display_name = "Gun"
desc = "Used to receive entities hit by projectiles from a gun."
/// Called when a projectile hits
var/datum/port/output/signal
/// The shooter
var/datum/port/output/shooter
/// The entity being shot
var/datum/port/output/shot
/obj/item/circuit_component/wiremod_gun/Initialize(mapload)
. = ..()
shooter = add_output_port("Shooter", PORT_TYPE_ATOM)
shot = add_output_port("Shot Entity", PORT_TYPE_ATOM)
signal = add_output_port("Shot", PORT_TYPE_SIGNAL)
/obj/item/circuit_component/wiremod_gun/register_shell(atom/movable/shell)
RegisterSignal(shell, COMSIG_PROJECTILE_ON_HIT, PROC_REF(handle_shot))
if(istype(shell, /obj/item/gun/energy))
RegisterSignal(shell, COMSIG_GUN_CHAMBER_PROCESSED, PROC_REF(handle_chamber))
/obj/item/circuit_component/wiremod_gun/unregister_shell(atom/movable/shell)
UnregisterSignal(shell, list(COMSIG_PROJECTILE_ON_HIT, COMSIG_GUN_CHAMBER_PROCESSED))
/**
* Called when the shell item shoots something
*/
/obj/item/circuit_component/wiremod_gun/proc/handle_shot(atom/source, mob/firer, atom/target, angle)
SIGNAL_HANDLER
playsound(source, get_sfx(SFX_TERMINAL_TYPE), 25, FALSE)
shooter.set_output(firer)
shot.set_output(target)
signal.set_output(COMPONENT_SIGNAL)
/**
* Called when the shell item processes a new chamber
*/
/obj/item/circuit_component/wiremod_gun/proc/handle_chamber(atom/source)
SIGNAL_HANDLER
if(!parent?.cell)
return
var/obj/item/gun/energy/fired_gun = source
var/totransfer = min(100, parent.cell.charge)
var/transferred = fired_gun.cell.give(totransfer)
parent.cell.use(transferred)