Deterministic output slots for smartfridges (#32225)

* a spooky commit

* It is too late, the skeleton is already inside you

* mexican river dolphins for halloween 2018

* Compiler warnings for halloween 2018

code/game/machinery/_machinery.dm

@@ -506,3 +506,14 @@ Class Procs:
 	. = ..()
 	if (AM == occupant)
 		occupant = null
+
+/obj/machinery/proc/adjust_item_drop_location(atom/movable/AM)	// Adjust item drop location to a 3x3 grid inside the tile, returns slot id from 0 to 8
+	var/md5 = md5(AM.name)										// Oh, and it's deterministic too. A specific item will always drop from the same slot.
+#if DM_VERSION > 511
+#warn Refactor the loop in /obj/machinery/proc/adjust_item_drop_location() to make use of 512's list-like access to characters in a string
+#endif
+	for (var/i in 1 to 32)
+		. += hex2num(copytext(md5,i,i+1))
+	. = . % 9
+	AM.pixel_x = -8 + ((.%3)*8)
+	AM.pixel_y = -8 + (round( . / 3)*8)