Fixes #549 (#551)

Lessons were learned.

code/modules/mob/living/bot/ed209bot.dm

@@ -56,8 +56,6 @@
 		return
 
 	last_shot = world.time
-	var/turf/T = get_turf(src)
-	var/turf/U = get_turf(A)
 
 	var/projectile = /obj/item/projectile/beam/stun
 	if(emagged)
@@ -65,14 +63,9 @@
 
 	playsound(loc, emagged ? 'sound/weapons/Laser.ogg' : 'sound/weapons/Taser.ogg', 50, 1)
 	var/obj/item/projectile/P = new projectile(loc)
+	var/def_zone = get_exposed_defense_zone(A)
+	P.launch(A, def_zone)
 
-	P.original = A
-	P.starting = T
-	P.current = T
-	P.yo = U.y - T.y
-	P.xo = U.x - T.x
-	spawn()
-		P.process()
 	return
 
 // Assembly

code/modules/mob/living/carbon/human/species/xenomorphs/alien_powers.dm

@@ -171,29 +171,8 @@
 
 	visible_message("<span class='warning'>[src] spits neurotoxin at [target]!</span>", "<span class='alium'>You spit neurotoxin at [target].</span>")
 
-	//I'm not motivated enough to revise this. Prjectile code in general needs update.
-	// Maybe change this to use throw_at? ~ Z
-	var/turf/T = loc
-	var/turf/U = (istype(target, /atom/movable) ? target.loc : target)
-
-	if(!U || !T)
-		return
-	while(U && !istype(U,/turf))
-		U = U.loc
-	if(!istype(T, /turf))
-		return
-	if (U == T)
-		usr.bullet_act(new /obj/item/projectile/energy/neurotoxin(usr.loc), get_organ_target())
-		return
-	if(!istype(U, /turf))
-		return
-
 	var/obj/item/projectile/energy/neurotoxin/A = new /obj/item/projectile/energy/neurotoxin(usr.loc)
-	A.current = U
-	A.yo = U.y - T.y
-	A.xo = U.x - T.x
-	A.process()
-	return
+	A.launch(target, get_organ_target())
 
 /mob/living/carbon/human/proc/resin() // -- TLE
 	set name = "Secrete Resin (75)"
@@ -217,4 +196,4 @@
 			new /obj/effect/alien/resin/membrane(loc)
 		if("resin nest")
 			new /obj/structure/bed/nest(loc)
-	return
+	return

code/modules/mob/living/simple_animal/hostile/hostile.dm

@@ -155,22 +155,21 @@
 	var/target = target_mob
 	visible_message("\red <b>[src]</b> fires at [target]!", 1)
 
-	var/tturf = get_turf(target)
 	if(rapid)
 		spawn(1)
-			Shoot(tturf, src.loc, src)
+			Shoot(target, src.loc, src)
 			if(casingtype)
 				new casingtype(get_turf(src))
 		spawn(4)
-			Shoot(tturf, src.loc, src)
+			Shoot(target, src.loc, src)
 			if(casingtype)
 				new casingtype(get_turf(src))
 		spawn(6)
-			Shoot(tturf, src.loc, src)
+			Shoot(target, src.loc, src)
 			if(casingtype)
 				new casingtype(get_turf(src))
 	else
-		Shoot(tturf, src.loc, src)
+		Shoot(target, src.loc, src)
 		if(casingtype)
 			new casingtype
 
@@ -187,16 +186,9 @@
 	playsound(user, projectilesound, 100, 1)
 	if(!A)	return
 
-	if (!istype(target, /turf))
-		qdel(A)
-		return
-	A.current = target
-	A.starting = get_turf(src)
-	A.original = get_turf(target)
-	A.yo = target:y - start:y
-	A.xo = target:x - start:x
-	spawn( 0 )
-		A.process()
+	var/def_zone = get_exposed_defense_zone(target)
+	A.launch(target, def_zone)
+
 	return
 
 /mob/living/simple_animal/hostile/proc/DestroySurroundings()

code/modules/power/singularity/emitter.dm

@@ -129,27 +129,16 @@
 		//need to calculate the power per shot as the emitter doesn't fire continuously.
 		var/burst_time = (min_burst_delay + max_burst_delay)/2 + 2*(burst_shots-1)
 		var/power_per_shot = active_power_usage * (burst_time/10) / burst_shots
-		var/obj/item/projectile/beam/emitter/A = new /obj/item/projectile/beam/emitter( src.loc )
-		A.damage = round(power_per_shot/EMITTER_DAMAGE_POWER_TRANSFER)
 
-		playsound(src.loc, 'sound/weapons/emitter.ogg', 25, 1)
 		if(prob(35))
 			var/datum/effect/effect/system/spark_spread/s = new /datum/effect/effect/system/spark_spread
 			s.set_up(5, 1, src)
 			s.start()
-		A.set_dir(src.dir)
-		A.starting = get_turf(src)
-		switch(dir)
-			if(NORTH)
-				A.original = locate(x, y+1, z)
-			if(EAST)
-				A.original = locate(x+1, y, z)
-			if(WEST)
-				A.original = locate(x-1, y, z)
-			else // Any other
-				A.original = locate(x, y-1, z)
-		A.process()
 
+		var/obj/item/projectile/beam/emitter/A = new /obj/item/projectile/beam/emitter( src.loc )
+		playsound(src.loc, 'sound/weapons/emitter.ogg', 25, 1)
+		A.damage = round(power_per_shot/EMITTER_DAMAGE_POWER_TRANSFER)
+		A.launch(get_step(src.loc, src.dir))
 
 /obj/machinery/power/emitter/attackby(obj/item/W, mob/user)
 
@@ -235,4 +224,4 @@
 		return
 
 	..()
-	return
+	return