Fixes critical bug causing multiple hits from single projectile.

Fixes some other potential issues coming from changing a few del() to qdel().
Fixes not being able to shoot mob on same tile as the shooter.
Fixes being able to shoot oneself by simply clicking our mob.
Fixes not being able to shoot non human mobs right next to us.

code/modules/flufftext/Hallucination.dm

@@ -140,27 +140,28 @@ Gunshots/explosions/opening doors/less rare audio (done)
 		radius++
 		if(radius > FAKE_FLOOD_MAX_RADIUS)
 			qdel(src)
+			return
 		Expand()
 		next_expand = world.time + FAKE_FLOOD_EXPAND_TIME
-	return
 
 /obj/effect/hallucination/fake_flood/proc/Expand()
-	if(!flood_turfs) //for qdel
-		return
 	for(var/turf/T in circlerangeturfs(loc,radius))
 		if((T in flood_turfs)|| T.blocks_air)
 			continue
 		flood_images += image(image_icon,T,image_state,MOB_LAYER)
 		flood_turfs += T
-	if(target.client) target.client.images |= flood_images
-	return
+	if(target.client)
+		target.client.images |= flood_images
 
 /obj/effect/hallucination/fake_flood/Destroy()
 	SSobj.processing.Remove(src)
 	qdel(flood_turfs)
-	if(target.client) target.client.images.Remove(flood_images)
+	flood_turfs = list()
+	if(target.client)
+		target.client.images.Remove(flood_images)
 	target = null
 	qdel(flood_images)
+	flood_images = list()
 	return ..()
 
 /obj/effect/hallucination/simple/xeno