voxalgo::clearLightAndCollectSources(v, a, LIGHTBANK_DAY,
ndef, light_sources, unlight_from);
//v.print(dstream, ndef, VOXELPRINT_LIGHT_DAY);
UASSERT(v.getNode(v3s16(0,1,1)).getLight(LIGHTBANK_DAY, ndef)
== 0);
voxalgo::clearLightAndCollectSources(v, a, LIGHTBANK_DAY,
ndef, light_sources, unlight_from);
//v.print(dstream, ndef, VOXELPRINT_LIGHT_DAY);
UASSERT(v.getNode(v3s16(0,1,1)).getLight(LIGHTBANK_DAY, ndef)
== 0);