RandomizeUUIDs

# Feel free to modify and use this filter however you wish. If you do,
# please give credit to SethBling.
# http://youtube.com/SethBling

from pymclevel import TAG_Long
import random

def perform(level, box, options):
	for (chunk, slices, point) in level.getChunkSlices(box):
		for e in chunk.Entities:
			e["UUIDMost"] = TAG_Long((random.getrandbits(47)<<16) | (1<<12) | random.getrandbits(12))
			e["UUIDLeast"] = TAG_Long(-((7<<60) | random.getrandbits(60)))
			chunk.dirty = True