SlimeTest.java

import java.lang.System;
import java.util.Random;

class SlimeTest {
	public static boolean isSlimeChunk(long seed, long x, long z) {
		Random random = new Random(seed +
				(long) (x * x * 0x4c1906) +
				(long) (x * 0x5ac0db) + 
				(long) (z * z) * 0x4307a7L +
				(long) (z * 0x5f24f) ^ 0x3ad8025f);
		return random.nextInt(10) == 0;
	}

	public static void main(String[] args) {
		long seed = 42;
		for (int x = -10; x <= 10; x++) {
			for (int z = -10; z <= 10; z++) {
				if (isSlimeChunk(seed, x, z)) {
					// System.out.println(x + "," + z + " is a slime chunk!");
					System.out.println("mc::ChunkPos(" + x + ", " + z + "),");	
				}
			}
		}

		System.out.println();
		seed = 73;

		int needed = 20;
		int max = 100000;
		Random random = new Random(System.currentTimeMillis());

		int found = 0;
		while (found < needed) {
			long chunkx = random.nextInt(2*max) - max;
			long chunkz = random.nextInt(2*max) - max;
			if (isSlimeChunk(seed, chunkx, chunkz)) {
				System.out.println("mc::ChunkPos(" + chunkx + ", " + chunkz + "),");
				found++;
			}
		}

		System.out.println();

		found = 0;
		while (found < needed) {
			long chunkx = random.nextInt(2*max) - max;
			long chunkz = random.nextInt(2*max) - max;
			if (!isSlimeChunk(seed, chunkx, chunkz)) {
				System.out.println("mc::ChunkPos(" + chunkx + ", " + chunkz + "),");
				found++;
			}
		}
	}
}