minecraft-diagonal-seed-finder

Finds Minecraft 1.15 seeds which make the decorations in nearby chunks repeat. You can find more information on Matthew's youtube channel.

Building and Running

As this code is just a single .java file, you should be able to build with this line.

$ javac SeedFinder.java

You can run it with this line.

$ java SeedFinder > out.txt

This should produce the output in a file called out.txt.

The output file is also already precomputed and included in the repository, in case you just want the seeds without running the code.

Output Format

Each line of the output has a seed, then the direction that the seed's decorator repeats. Due to the way the code searches for seeds, the only directions produced will be -1 1 and 1 1.

Because of the way minecraft seeds the game, all seeds that have the same least significant 48 bits have the same decorator behavior. This code only outputs seeds from 0 <= x < 2^48, so if you need more seeds with the same decorator properties, you can use other 64 bit numbers that have the same least significant 64 bits as any of the seeds in out.txt.