Emitter: The Emitting (#92327)

## About The Pull Request
Adds Diode Disks, installable disks that when fitted into an emitter can
change its function.
* Healing
* Stamina damage, and heals the SM slightly at the cost of internal
energy
* Traitor engi only explosive that damages and supercharges the SM if
used that way. Firerate is halved.
* Incendiary that slightly damages the SM but has lots of energy
* Sanity damaging one that improves SM psi coeff
* Magnetic item attracting one that improves SM mol absorption.
## Why It's Good For The Game
Fun and unique ways for Engi to use excess power or improve their SM
setups. Could also lead to neat engi inventions such as, say, a circuit
device that aims and fires a healing emitter at anyone nearby who is
damaged. Should also incentivize the researching of useful techs, hence
why important medium tier techs are what lock the different disks.
## Changelog
🆑
add: New Diode Disks which allow you to configurate emitters with
special functions.
add: New Engi & CE exclusive traitor item, a diode disk that causes an
emitter to create low radius explosions when it hits things. Note that
this will reduce the fire-rate of your emitter.
/🆑

---------

Co-authored-by: ThrowawayUseless <notarealemail@emailservice.fake>
Co-authored-by: necromanceranne <40847847+necromanceranne@users.noreply.github.com>

code/modules/projectiles/projectile/beams.dm

@@ -243,6 +243,124 @@
 	impact_light_intensity = 7
 	impact_light_range = 2.5
 	impact_light_color_override = COLOR_LIME
+	// Subtract this from SM damage on hit for lasers
+	var/integrity_heal
+	// Subtract this from SM energy on hit for lasers
+	var/energy_reduction
+	// Add this to SM psi coefficient on hit for lasers
+	var/psi_change
+
+/obj/projectile/beam/emitter/hitscan/bluelens
+	name = "electrodisruptive beam"
+	light_color = LIGHT_COLOR_BLUE
+	muzzle_type = /obj/effect/projectile/muzzle/pulse
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/bluelens
+	impact_type = /obj/effect/projectile/impact/pulse
+	hitscan_light_color_override = COLOR_BLUE_LIGHT
+	muzzle_flash_color_override = COLOR_BLUE_LIGHT
+	impact_light_color_override = COLOR_BLUE_LIGHT
+	damage_type = STAMINA
+	integrity_heal = 0.25
+	energy_reduction = 60
+
+/obj/projectile/beam/emitter/hitscan/bioregen
+	name = "bioregenerative beam"
+	light_color = LIGHT_COLOR_BRIGHT_YELLOW
+	muzzle_type = /obj/effect/projectile/muzzle/solar
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/bioregen
+	impact_type = /obj/effect/projectile/impact/solar
+	hitscan_light_color_override = COLOR_LIGHT_YELLOW
+	muzzle_flash_color_override = COLOR_LIGHT_YELLOW
+	impact_light_color_override = COLOR_LIGHT_YELLOW
+	damage_type = STAMINA
+	damage = 0
+	var/healing_done = 5
+
+/obj/projectile/beam/emitter/hitscan/bioregen/on_hit(atom/target, blocked, pierce_hit)
+	. = ..()
+	if(!iscarbon(target))
+		return
+	var/mob/living/carbon/healed_guy = target
+	healed_guy.heal_bodypart_damage(brute = healing_done, burn = healing_done, updating_health = FALSE)
+
+/obj/projectile/beam/emitter/hitscan/incend
+	name = "conflagratory beam"
+	light_color = LIGHT_COLOR_ORANGE
+	muzzle_type = /obj/effect/projectile/muzzle/heavy_laser
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/redlens
+	impact_type = /obj/effect/projectile/impact/heavy_laser
+	hitscan_light_color_override = COLOR_ORANGE
+	muzzle_flash_color_override = COLOR_ORANGE
+	impact_light_color_override = COLOR_ORANGE
+	damage = 20
+	integrity_heal = -0.15
+	energy_reduction = -150
+	psi_change = -0.1
+
+/obj/projectile/beam/emitter/hitscan/incend/on_hit(atom/target, blocked, pierce_hit)
+	. = ..()
+	if(!isliving(target))
+		return
+	var/mob/living/burnt_guy = target
+	burnt_guy.adjust_fire_stacks(5)
+	burnt_guy.ignite_mob()
+
+/obj/projectile/beam/emitter/hitscan/psy
+	name = "psychosiphoning beam"
+	light_color = LIGHT_COLOR_PINK
+	muzzle_type = /obj/effect/projectile/muzzle/laser/emitter/psy
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/psy
+	impact_type = /obj/effect/projectile/impact/laser/emitter/psy
+	hitscan_light_color_override = COLOR_BLUSH_PINK
+	muzzle_flash_color_override = COLOR_BLUSH_PINK
+	impact_light_color_override = COLOR_BLUSH_PINK
+	damage = 0
+	energy_reduction = -25
+	psi_change = 0.25
+
+/obj/projectile/beam/emitter/hitscan/psy/on_hit(atom/target, blocked, pierce_hit)
+	. = ..()
+	if(!isliving(target))
+		return
+	var/mob/living/siphoned = target
+	siphoned.mob_mood.adjust_sanity(-25)
+	to_chat(siphoned, span_warning("Suddenly, everything feels just a little bit worse!"))
+
+/obj/projectile/beam/emitter/hitscan/magnetic
+	name = "magnetogenerative beam"
+	light_color = COLOR_SILVER
+	muzzle_type = /obj/effect/projectile/muzzle/laser/emitter/magnetic
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/magnetic
+	impact_type = /obj/effect/projectile/impact/laser/emitter/magnetic
+	hitscan_light_color_override = COLOR_SILVER
+	muzzle_flash_color_override = COLOR_SILVER
+	impact_light_color_override = COLOR_SILVER
+	damage = 0
+
+/obj/projectile/beam/emitter/hitscan/magnetic/on_hit(atom/target, blocked, pierce_hit)
+	. = ..()
+	var/turf/turf_to_magnet = get_turf(target)
+	goonchem_vortex(turf_to_magnet, FALSE, 4)
+
+/obj/projectile/beam/emitter/hitscan/blast
+	name = "hyperconcussive beam"
+	light_color = LIGHT_COLOR_ORANGE
+	muzzle_type = /obj/effect/projectile/muzzle/laser/emitter/magnetic
+	tracer_type = /obj/effect/projectile/tracer/laser/emitter/magnetic
+	impact_type = /obj/effect/projectile/impact/laser/emitter/magnetic
+	hitscan_light_color_override = COLOR_ORANGE
+	muzzle_flash_color_override = COLOR_ORANGE
+	impact_light_color_override = COLOR_ORANGE
+	damage = 0
+	integrity_heal = -2
+	energy_reduction = -500
+
+
+/obj/projectile/beam/emitter/hitscan/blast/on_hit(atom/target, blocked, pierce_hit)
+	. = ..()
+	var/turf/turf_to_explode = get_turf(target)
+	explosion(turf_to_explode, 0, 1, 2)
+
 
 /obj/projectile/beam/lasertag
 	name = "laser tag beam"