@Override public void changeBlockBiome(Location location) { int x = location.getBlockX(); int z = location.getBlockZ(); WorldServer world = ((CraftWorld) location.getWorld()).getHandle(); if (world.isLoaded(new BlockPosition(x, 0, z))) { Chunk chunk = world.getChunkAtWorldCoords(new BlockPosition(x, 0, z)); if (chunk != null) { byte[] biomevals = chunk.getBiomeIndex(); biomevals[((z & 0xF) << 4) | (x & 0xF)] = (byte) BiomeBase.a(biomeBase); } } }