The 515 MegaPR early downport (#7783)

Co-authored-by: Selis <selis@xynolabs.com>
Co-authored-by: Selis <sirlionfur@hotmail.de>
Co-authored-by: Kashargul <144968721+Kashargul@users.noreply.github.com>
Co-authored-by: SatinIsle <thesatinisle@gmail.com>
Co-authored-by: Heroman <alesha3000@list.ru>
Co-authored-by: Casey <a.roaming.shadow@gmail.com>
Co-authored-by: Raeschen <rycoop29@gmail.com>

code/modules/projectiles/projectile/trace.dm

@@ -14,7 +14,9 @@
 	return trace.launch_projectile(target) //Test it!
 
 /obj/item/projectile/proc/_check_fire(atom/target as mob, var/mob/living/user as mob)  //Checks if you can hit them or not.
-	check_trajectory(target, user, pass_flags, flags)
+	if(target in check_trajectory(target, user, pass_flags, flags))
+		return TRUE
+	return FALSE
 
 //"Tracing" projectile
 /obj/item/projectile/test //Used to see if you can hit them.
@@ -22,6 +24,7 @@
 	hitscan = TRUE
 	nodamage = TRUE
 	damage = 0
+	bump_targets = FALSE
 	var/list/hit = list()
 
 /obj/item/projectile/test/process_hitscan()
@@ -33,7 +36,24 @@
 /obj/item/projectile/test/Bump(atom/A)
 	if(A != src)
 		hit |= A
+	if(isturf(A))
+		for(var/obj/O in A)
+			hit |= A
+		for(var/mob/living/M in A)
+			hit |= A
 	return ..()
 
+/obj/item/projectile/test/fire(angle, atom/direct_target)
+	. = ..()
+	if(direct_target)
+		if(direct_target != src)
+			hit |= direct_target
+		. = hit
+
+
 /obj/item/projectile/test/attack_mob()
 	return
+
+//Don't generate tracers - they are generated on Destroy()
+/obj/item/projectile/test/finalize_hitscan_and_generate_tracers()
+	return