int blockZ = (originZ + z) * SupportChunk.chunksBlockWidth;
// get the height info for this chunk
heights = HeightInfo.getHeightsFaster(generator, blockX, blockZ);
if (heights.averageHeight > 0 && heights.averageHeight < generator.seaLevel)
current = new AstralCrystalSpiresLot(platmap, originX + x, originZ + z, getPopulationOdds(x, z));
// did current get defined?
if (current != null)
platmap.setLot(x, z, current);
}