[S] Fixes an exploit (ParadiseSS13#24703)

* it never had a range........

* slide to the left

* guh

code/_onclick/other_mobs.dm

@@ -49,7 +49,7 @@
 	if(HAS_TRAIT(src, TRAIT_LASEREYES) && a_intent == INTENT_HARM)
 		LaserEyes(A)
 
-	if(HAS_TRAIT(src, TRAIT_TELEKINESIS))
+	if(HAS_TRAIT(src, TRAIT_TELEKINESIS) && telekinesis_range_check(src, A))
 		A.attack_tk(src)
 
 	if(isturf(A) && get_dist(src, A) <= 1)

code/_onclick/telekinesis.dm

@@ -16,6 +16,12 @@
 	user.UnarmedAttack(src,0) // attack_hand, attack_paw, etc
 	return
 
+/*
+	Returns: True if the target is within the 15 tile range of telekinesis and on the same z-level, false otherwise.
+*/
+/proc/telekinesis_range_check(mob/living/carbon/human/user, atom/target)
+	return (get_dist(user, target) <= TK_MAXRANGE && user.z == target.z)
+
 /*
 	This is similar to item attack_self, but applies to anything
 	that you can grab with a telekinetic grab.
@@ -119,7 +125,7 @@
 	var/d = get_dist(user, target)
 	if(focus)
 		d = max(d,get_dist(user,focus)) // whichever is further
-	if(d > TK_MAXRANGE)
+	if(d > TK_MAXRANGE || user.z != target.z)
 		to_chat(user, "<span class='warning'>Your mind won't reach that far.</span>")
 		return