Further Seed Customisation

Allow server admins that really want to to customise the seeds used in world generation even further.

By: md_5 <git@md-5.net>

paper-server/src/main/java/org/bukkit/craftbukkit/CraftChunk.java

@@ -218,7 +218,7 @@ public class CraftChunk implements Chunk {
     @Override
     public boolean isSlimeChunk() {
         // 987234911L is deterimined in EntitySlime when seeing if a slime can spawn in a chunk
-        return WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), 987234911L).nextInt(10) == 0;
+        return WorldgenRandom.seedSlimeChunk(this.getX(), this.getZ(), this.getWorld().getSeed(), this.worldServer.spigotConfig.slimeSeed).nextInt(10) == 0;
     }
 
     @Override