move invisibility to defines (#17612)

* move Invisibility to defines

* .

* .

code/modules/projectiles/projectile/beams.dm

@@ -10,7 +10,7 @@
 	var/frequency = 1
 	hitscan = 1
 	embed_chance = 0
-	invisibility = 99	//beam projectiles are invisible as they are rendered by the effect engine
+	invisibility = INVISIBILITY_BADMIN	//beam projectiles are invisible as they are rendered by the effect engine
 	light_range = 2
 	light_power = 0.5
 	light_color = "#FF0D00"

code/modules/projectiles/projectile/change.dm

@@ -48,7 +48,7 @@
 			if("robot")
 				new_mob = new /mob/living/silicon/robot(M.loc)
 				new_mob.gender = M.gender
-				new_mob.invisibility = 0
+				new_mob.invisibility = INVISIBILITY_NONE
 				new_mob.job = JOB_CYBORG
 				var/mob/living/silicon/robot/Robot = new_mob
 				Robot.mmi = new /obj/item/mmi(new_mob)

code/modules/projectiles/projectile/trace.dm

@@ -20,7 +20,7 @@
 
 //"Tracing" projectile
 /obj/item/projectile/test //Used to see if you can hit them.
-	invisibility = 101 //Nope!  Can't see me!
+	invisibility = INVISIBILITY_ABSTRACT //Nope!  Can't see me!
 	hitscan = TRUE
 	nodamage = TRUE
 	damage = 0