[MIRROR] Overlay lighting component (#469)

* Overlay lighting component (#52413)

Sparks no longer lag, projectile beams move super smoothly, same with mobs and whatnot. This also allows for easy expansion into directional lights, field-of-view, wee-woo rotating lights or whatever.

It does have a downside: things right-clicked or checked through the alt+click tab will show the light overlay:


This is a BYOND limitation, very well worth it IMO.

🆑
add: Smooth movable lighting system implemented. Projectiles, sparks, thrown flashlights or moving mobs with lights should be much smoother and less laggy.
balance: Light sources no longer stack in range, though they still do in intensity.
/🆑

* Overlay lighting component

Co-authored-by: Rohesie <rohesie@gmail.com>

code/modules/projectiles/projectile/beams.dm

@@ -3,13 +3,15 @@
 	icon_state = "laser"
 	pass_flags = PASSTABLE | PASSGLASS | PASSGRILLE
 	damage = 20
-	light_range = 2
 	damage_type = BURN
 	hitsound = 'sound/weapons/sear.ogg'
 	hitsound_wall = 'sound/weapons/effects/searwall.ogg'
 	flag = "laser"
 	eyeblur = 2
 	impact_effect_type = /obj/effect/temp_visual/impact_effect/red_laser
+	light_system = MOVABLE_LIGHT
+	light_range = 2
+	light_power = 1
 	light_color = COLOR_SOFT_RED
 	ricochets_max = 50	//Honk!
 	ricochet_chance = 80
@@ -17,6 +19,7 @@
 	wound_bonus = -20
 	bare_wound_bonus = 10
 
+
 /obj/projectile/beam/laser
 	tracer_type = /obj/effect/projectile/tracer/laser
 	muzzle_type = /obj/effect/projectile/muzzle/laser