NT researchers make shocking breakthrough in flux anomalogics! Tesla Cannon Resprite / Resound (#92031)

## About The Pull Request

![tesla_card](https://github.com/user-attachments/assets/27d0777b-3014-4785-b06e-f5e7fe0d5a36)

Resprites:

Tesla Cannon 
Tesla Cannon crafting kit

### New SFX / VFX

The tesla cannon now uses a new type of beam effect that randomly picks
sprite variants for each segment instead of a tracer.

This makes the arc look more dynamic and less distorted. 

Autofire guns can now choose to use a looping sound datum when firing.


![image](https://github.com/user-attachments/assets/b9c0c494-fce6-48bc-9d09-ea2e6257c86c)

#### Balance changes

The tesla cannon must now have its stock unfolded before firing, this
takes 1.5 seconds and makes the gun bulky.

It is still normal sized when folded, and folding it is instant.

### Bug fixes

Fixed a bug where looping_sound.stop() would fail to stop sounds.

The tesla cannon is an incredibly powerfu 

## Why It's Good For The Game

### My reasons for respriting

The old sprite was not bad, by all means but I had a few gripes with it.

* The old sprite does not incorporate the flux anomaly yellow colour.

* The old sprite looks a bit much like a real, professionally produced
sci-fi weapon,

* The old sprite looks pretty small for such a ultra high dps full auto
weapon.

* The old inhand is quite indistinct for something that can game end you
in like one second.

### My design

I think that anomaly items should be very mad science coded and, since
anomaly science is by definition a poorly studied field, they should
look more like prototypes created by a scientist rather than something
professionally made in a factory.

## Changelog

🆑
image: The tesla cannon has new sprites.
image: The tesla parts kit has new sprites.
image: The tesla cannon has a new shocking beam effect when firing.
sound: The tesla cannon has new sounds.
balance: The tesla cannon must now be unfolded to fire.
fix: looping sounds now stop playing sounds when commaned to do so.
/🆑

code/__DEFINES/visual_helpers.dm

@@ -18,7 +18,7 @@
 	base_pixel_z = z;
 
 #define _SET_BASE_PIXEL_VISUAL_NO_OFFSET(w, z) \
-	base_pixel_z = w; \
+	base_pixel_w = w; \
 	base_pixel_z = z;
 
 /// Much like [SET_BASE_PIXEL], except it will not effect pixel offsets in mapping programs

code/datums/beam.dm

@@ -80,13 +80,7 @@
  */
 /datum/beam/proc/Start()
 	visuals = new beam_type()
-	visuals.icon = icon
-	visuals.icon_state = icon_state
-	visuals.color = beam_color
-	visuals.vis_flags = VIS_INHERIT_PLANE|VIS_INHERIT_LAYER
-	visuals.emissive = emissive
-	visuals.layer = beam_layer
-	visuals.update_appearance()
+	set_up_effect(visuals, icon_state)
 	Draw()
 	RegisterSignals(origin, list(COMSIG_MOVABLE_MOVED, COMSIG_QDELETING), PROC_REF(redrawing))
 	RegisterSignals(target, list(COMSIG_MOVABLE_MOVED, COMSIG_QDELETING), PROC_REF(redrawing))
@@ -146,15 +140,14 @@
 		var/obj/effect/ebeam/segment = new beam_type(origin_turf, src)
 		elements += segment
 
-		//Assign our single visual ebeam to each ebeam's vis_contents
 		//ends are cropped by a transparent box icon of length-N pixel size laid over the visuals obj
 		if(N+32>length) //went past the target, we draw a box of space to cut away from the beam sprite so the icon actually ends at the center of the target sprite
-			var/icon/II = new(icon, icon_state)//this means we exclude the overshooting object from the visual contents which does mean those visuals don't show up for the final bit of the beam...
-			II.DrawBox(null,1,(length-N),32,32)//in the future if you want to improve this, remove the drawbox and instead use a 513 filter to cut away at the final object's icon
-			segment.icon = II
+			var/icon/terminal_icon = new(icon, icon_state)//this means we exclude the overshooting object from the visual contents which does mean those visuals don't show up for the final bit of the beam...
+			terminal_icon.DrawBox(null,1,(length-N),32,32)//in the future if you want to improve this, remove the drawbox and instead use a 513 filter to cut away at the final object's icon
+			segment.icon = terminal_icon
 			segment.color = beam_color
 		else
-			segment.vis_contents += visuals
+			set_subsegment_appearance(segment)
 		segment.transform = rot_matrix
 
 		//Calculate pixel offsets (If necessary)
@@ -184,6 +177,50 @@
 		segment.pixel_y = origin_py + Pixel_y
 		CHECK_TICK
 
+/datum/beam/proc/set_up_effect(obj/effect/ebeam/beam_effect, effect_icon_state)
+	beam_effect.icon = icon
+	beam_effect.icon_state = effect_icon_state
+	beam_effect.color = beam_color
+	beam_effect.vis_flags = VIS_INHERIT_PLANE|VIS_INHERIT_LAYER
+	beam_effect.emissive = emissive
+	beam_effect.layer = beam_layer
+	beam_effect.update_appearance()
+
+///sets the sprite of the segment, using the more performant viscontents by default
+/datum/beam/proc/set_subsegment_appearance(obj/effect/ebeam/segment)
+	//Assign our single visual ebeam to each ebeam's vis_contents
+	segment.vis_contents += visuals
+
+//for when you don't want each segment to look identital
+/datum/beam/varied
+	//how many variants do we have in addition to the unnumbered state we use as a base icon state and terminal segment
+	var/icon_state_variants = 1
+
+/datum/beam/varied/New(
+	origin,
+	target,
+	icon = 'icons/effects/beam.dmi',
+	icon_state = "b_beam",
+	time = INFINITY,
+	max_distance = INFINITY,
+	beam_type = /obj/effect/ebeam,
+	beam_color = null,
+	emissive = TRUE,
+	override_origin_pixel_x = null,
+	override_origin_pixel_y = null,
+	override_target_pixel_x = null,
+	override_target_pixel_y = null,
+	beam_layer = ABOVE_ALL_MOB_LAYER,
+	icon_state_variants = 1
+	)
+	. = ..()
+
+	src.icon_state_variants = icon_state_variants
+
+/datum/beam/varied/set_subsegment_appearance(obj/effect/ebeam/segment)
+	//we use reall ass icon states here.
+	set_up_effect(segment, "[icon_state][rand(1, icon_state_variants)]")
+
 /obj/effect/ebeam
 	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
 	layer = ABOVE_ALL_MOB_LAYER
@@ -298,8 +335,14 @@
 	override_origin_pixel_y = null,
 	override_target_pixel_x = null,
 	override_target_pixel_y = null,
-	layer = ABOVE_ALL_MOB_LAYER
+	layer = ABOVE_ALL_MOB_LAYER,
+	icon_state_variants = 0,
 )
-	var/datum/beam/newbeam = new(src,BeamTarget,icon,icon_state,time,maxdistance,beam_type, beam_color, emissive, override_origin_pixel_x, override_origin_pixel_y, override_target_pixel_x, override_target_pixel_y, layer)
+	var/datum/beam/newbeam
+
+	if(icon_state_variants <= 0)
+		newbeam = new(src,BeamTarget,icon,icon_state,time,maxdistance,beam_type, beam_color, emissive, override_origin_pixel_x, override_origin_pixel_y, override_target_pixel_x, override_target_pixel_y, layer)
+	else
+		newbeam = new /datum/beam/varied(src,BeamTarget,icon,icon_state,time,maxdistance,beam_type, beam_color, emissive, override_origin_pixel_x, override_origin_pixel_y, override_target_pixel_x, override_target_pixel_y, layer, icon_state_variants)
 	INVOKE_ASYNC(newbeam, TYPE_PROC_REF(/datum/beam/, Start))
 	return newbeam

code/datums/components/crafting/guncrafting.dm

@@ -70,6 +70,7 @@
 /obj/item/weaponcrafting/gunkit/tesla
 	name = "tesla cannon parts kit (lethal)"
 	desc = "A suitcase containing the necessary gun parts to construct a tesla cannon around a stabilized flux anomaly. Handle with care."
+	icon_state = "weaponskit_tesla"
 
 /obj/item/weaponcrafting/gunkit/xray
 	name = "x-ray laser gun parts kit (lethal)"

code/datums/components/fullauto.dm

@@ -28,9 +28,12 @@
 	var/windup_spindown = 3 SECONDS
 	///Timer for tracking the spindown reset timings
 	var/timerid
+	///Looping sound while firing.
+	var/datum/looping_sound/autofire_sound_loop
 	COOLDOWN_DECLARE(next_shot_cd)
 
-/datum/component/automatic_fire/Initialize(autofire_shot_delay, windup_autofire, windup_autofire_reduction_multiplier, windup_autofire_cap, windup_spindown, allow_akimbo = TRUE)
+
+/datum/component/automatic_fire/Initialize(autofire_shot_delay, windup_autofire, windup_autofire_reduction_multiplier, windup_autofire_cap, windup_spindown, allow_akimbo = TRUE, firing_sound_loop)
 	. = ..()
 	if(!isgun(parent))
 		return COMPONENT_INCOMPATIBLE
@@ -48,8 +51,12 @@
 		var/mob/user = gun.loc
 		wake_up(src, user)
 
+	if(firing_sound_loop)
+		autofire_sound_loop = new firing_sound_loop(parent)
+
 
 /datum/component/automatic_fire/Destroy()
+	QDEL_NULL(autofire_sound_loop)
 	autofire_off()
 	return ..()
 
@@ -191,6 +198,8 @@
 	START_PROCESSING(SSprojectiles, src)
 	RegisterSignal(clicker, COMSIG_CLIENT_MOUSEDRAG, PROC_REF(on_mouse_drag))
 
+	if(autofire_sound_loop)
+		autofire_sound_loop.start(shooter)
 
 /datum/component/automatic_fire/proc/on_mouse_up(datum/source, atom/object, turf/location, control, params)
 	SIGNAL_HANDLER
@@ -217,6 +226,9 @@
 	target_loc = null
 	mouse_parameters = null
 
+	if(autofire_sound_loop)
+		autofire_sound_loop.stop()
+
 /datum/component/automatic_fire/proc/on_mouse_drag(client/source, atom/src_object, atom/over_object, turf/src_location, turf/over_location, src_control, over_control, params)
 	SIGNAL_HANDLER
 	if(isnull(over_location)) //This happens when the mouse is over an inventory or screen object, or on entering deep darkness, for example.
@@ -238,7 +250,6 @@
 	target_loc = get_turf(over_object)
 	mouse_parameters = params
 
-
 /datum/component/automatic_fire/proc/process_shot()
 	if(autofire_stat != AUTOFIRE_STAT_FIRING)
 		return FALSE

code/datums/looping_sounds/_looping_sound.dm

@@ -63,6 +63,10 @@
 	var/direct
 	/// Sound channel to play on, random if not provided
 	var/sound_channel
+	///If we want to reserve a random channel when we start playing sounds. Good for when there could be several sources of the same looping sound heard by the same
+	var/reserve_random_channel = FALSE
+	//If we reserve a random sound channel, store the channel number here so we can clean it up later.
+	var/reserved_channel
 
 /datum/looping_sound/New(_parent, start_immediately = FALSE, _direct = FALSE, _skip_starting_sounds = FALSE)
 	if(!mid_sounds)
@@ -91,6 +95,11 @@
 		set_parent(on_behalf_of)
 	if(timer_id)
 		return
+
+	if(!sound_channel && reserve_random_channel)
+		sound_channel = SSsounds.reserve_sound_channel_datumless()
+		reserved_channel = sound_channel
+
 	on_start()
 
 /**
@@ -110,6 +119,11 @@
 	timer_id = null
 	loop_started = FALSE
 
+	if(reserved_channel)
+		sound_channel = null
+		SSsounds.free_sound_channel(reserved_channel)
+
+
 /// The proc that handles starting the actual core sound loop.
 /datum/looping_sound/proc/start_sound_loop()
 	loop_started = TRUE
@@ -165,7 +179,8 @@
 			pressure_affected = pressure_affected,
 			ignore_walls = ignore_walls,
 			falloff_distance = falloff_distance,
-			use_reverb = use_reverb
+			use_reverb = use_reverb,
+			channel = sound_channel || SSsounds.random_available_channel()
 		)
 
 /// Returns the sound we should now be playing.

code/datums/looping_sounds/item_sounds.dm

@@ -47,3 +47,15 @@
 /datum/looping_sound/zipline
 	mid_sounds = list('sound/items/weapons/zipline_mid.ogg' = 1)
 	volume = 5
+
+/datum/looping_sound/tesla_cannon
+	start_sound = list('sound/items/weapons/gun/tesla/tesla_start.ogg' = 1)
+	start_volume = 100
+	start_length = 200 MILLISECONDS
+	mid_sounds = list('sound/items/weapons/gun/tesla/tesla_loop.ogg' = 1)
+	mid_length = 3.8 SECONDS
+	volume = 100
+	end_sound = list('sound/items/weapons/gun/tesla/power_breaker_fan.ogg' = 1)
+	end_volume = 15
+	ignore_walls = FALSE
+	reserve_random_channel = TRUE

code/game/objects/effects/temporary_visuals/projectiles/tracer.dm

@@ -92,15 +92,3 @@
 
 /obj/effect/projectile/tracer/sniper
 	icon_state = "sniper"
-
-/obj/effect/projectile/tracer/lightning
-	icon = 'icons/effects/beam.dmi'
-	icon_state = "lightning2"
-
-/obj/effect/projectile/tracer/lightning/Initialize(mapload)
-	. = ..()
-	update_appearance()
-
-/obj/effect/projectile/tracer/lightning/update_icon_state()
-	. = ..()
-	icon_state = "lightning[rand(1, 12)]"

code/modules/mob/living/living_defense.dm

@@ -579,6 +579,9 @@
 		return FALSE
 	if(!(flags & SHOCK_ILLUSION))
 		adjustFireLoss(shock_damage)
+		if(getFireLoss() > 100)
+			add_shared_particles(/particles/smoke/burning)
+			addtimer(CALLBACK(src, TYPE_PROC_REF(/atom/movable, remove_shared_particles), /particles/smoke/burning), 10 SECONDS)
 	else
 		adjustStaminaLoss(shock_damage)
 	if(!(flags & SHOCK_SUPPRESS_MESSAGE))

code/modules/projectiles/ammunition/energy/special.dm

@@ -63,11 +63,11 @@
 	harmful = FALSE
 
 /obj/item/ammo_casing/energy/tesla_cannon
-	fire_sound = 'sound/effects/magic/lightningshock.ogg'
+	fire_sound = null
 	e_cost = LASER_SHOTS(33, STANDARD_CELL_CHARGE)
 	select_name = "shock"
 	projectile_type = /obj/projectile/energy/tesla_cannon
-	firing_effect_type = /obj/effect/temp_visual/dir_setting/firing_effect/blue
+	firing_effect_type = null
 
 /obj/item/ammo_casing/energy/shrink
 	projectile_type = /obj/projectile/magic/shrink/alien

code/modules/projectiles/guns/energy/special.dm

@@ -360,18 +360,72 @@
 		return FALSE
 	return ..()
 
+/**
+-----------------Tesla Cannon--------------------------------
+
+An advanced weapon that provides extremely high dps output at pinpoint accuracy due to its hitscan nature.
+
+Due to its normal w_class when folded it is suitable as a heavy reinforcement weapon, since the cell drains very quickly when firing.
+
+The power level is somewhat tempered by several drawbacks such as research requirements, anomalock, two handed firing requirement, and insultation providing damage reduction.
+
+it is often confused with the mech weapon of the same name, since it is a bit more obscure despite being very powerful. Formerly called the tesla revolver.
+**/
 /obj/item/gun/energy/tesla_cannon
 	name = "tesla cannon"
+	icon = 'icons/obj/weapons/guns/wide_guns.dmi'
 	icon_state = "tesla"
-	inhand_icon_state = "tesla"
-	desc = "A gun powered by a flux anomaly that shoots lightning bolts. Electrically insulating clothing may protect from some of the damage."
+	lefthand_file = 'icons/mob/inhands/weapons/64x_guns_left.dmi'
+	righthand_file = 'icons/mob/inhands/weapons/64x_guns_right.dmi'
+	inhand_icon_state = null //null so we build the correct inhand.
+	desc = "A high voltage flux projector prototype created using the latest advancements in the anomaly science.\n\nThe anomalous nature of the flux core allows the tesla arc to be guided from the electrode to the target without being diverted to stray conductors outside the target field."
+	SET_BASE_VISUAL_PIXEL(-8, 0)
 	ammo_type = list(/obj/item/ammo_casing/energy/tesla_cannon)
+	inhand_x_dimension = 64
 	shaded_charge = TRUE
+	charge_sections = 2
+	display_empty =  FALSE
 	weapon_weight = WEAPON_HEAVY
+	w_class = WEIGHT_CLASS_BULKY
+	///if our stpck is extended and we are ready to fire.
+	var/ready_to_fire = FALSE
 
 /obj/item/gun/energy/tesla_cannon/Initialize(mapload)
 	. = ..()
-	AddComponent(/datum/component/automatic_fire, 0.1 SECONDS)
+	AddComponent(/datum/component/automatic_fire, autofire_shot_delay =  100 MILLISECONDS, firing_sound_loop = /datum/looping_sound/tesla_cannon)
+
+/obj/item/gun/energy/tesla_cannon/can_trigger_gun(mob/living/user, akimbo_usage)
+	if(ready_to_fire)
+		return ..()
+	//If we have charge, but the stock is folded, do sparks.
+	if(can_shoot())
+		balloon_alert(user, "electricity arcing to stock!")
+
+		if(prob(75)) //fake sparks to cut on spark spam
+			playsound(user, 'sound/effects/sparks/sparks1.ogg', 50, TRUE)
+		else
+			do_sparks(3, FALSE, user)
+	return FALSE
+
+/obj/item/gun/energy/tesla_cannon/attack_self(mob/living/user)
+	. = ..()
+	if(ready_to_fire)
+		w_class = WEIGHT_CLASS_NORMAL
+		ready_to_fire = FALSE
+		icon_state = "tesla"
+		playsound(user, 'sound/items/weapons/gun/tesla/squeak_latch.ogg', 100)
+
+	else
+		playsound(user, 'sound/items/weapons/gun/tesla/click_creak.ogg', 100)
+		if(!do_after(user, 1.5 SECONDS))
+			return
+		w_class = WEIGHT_CLASS_BULKY
+		ready_to_fire = TRUE
+		icon_state = "tesla_unfolded"
+		playsound(user, 'sound/items/weapons/gun/tesla/squeak_latch.ogg', 100)
+
+	update_appearance()
+	balloon_alert_to_viewers("[ready_to_fire ? "unfolded" : "folded"] stock")
 
 /obj/item/gun/energy/marksman_revolver
 	name = "marksman revolver"

code/modules/projectiles/projectile/energy/tesla.dm

@@ -29,13 +29,14 @@
 	name = "tesla bolt"
 	icon_state = null
 	hitscan = TRUE
-	tracer_type = /obj/effect/projectile/tracer/lightning
 	impact_effect_type = null
 	damage = 5
 	var/shock_damage = 10
 
 /obj/projectile/energy/tesla_cannon/on_hit(atom/target, blocked = 0, pierce_hit)
 	. = ..()
+	firer.Beam(target, icon_state = "tesla", time = 1, icon_state_variants = 24)
+
 	if(isliving(target))
 		var/mob/living/victim = target
 		victim.electrocute_act(shock_damage, src, siemens_coeff = 1, flags = SHOCK_NOSTUN|SHOCK_TESLA)

sound/items/weapons/gun/tesla/attributions.txt

@@ -0,0 +1,7 @@
+{
+	tesla_loop.ogg - https://freesound.org/people/Department64/sounds/554749/, License: CC BY 4.0
+	tesla_start.ogg - https://freesound.org/people/Department64/sounds/554749/, https://freesound.org/people/iainmccurdy/sounds/759257/, License: CC BY 4.0
+	click_creak.ogg - https://freesound.org/people/Sonicquinn/sounds/435834/, https://freesound.org/people/holisoysilvi/sounds/610182/, License: CC 0
+	squeak_latch.ogg - https://freesound.org/people/Sonicquinn/sounds/435834/, https://freesound.org/people/holisoysilvi/sounds/610182/, License: CC 0
+	power_breaker_fan.ogg - https://freesound.org/people/Yoyodaman234/sounds/183544/, https://freesound.org/people/jessepash/sounds/139970/, https://freesound.org/people/sribubba/sounds/130154/, License: CC 0
+}