private void updateLump(int id, ClayLump lump) {
if (id < 0 || id >= parts.size()) {
return;
}
ClayLump old = parts.get(id);
if (old.equals(lump)) {
return;
}
parts.set(id, lump);
touch();
if (worldObj.isRemote) {
return;
}
}
