@ -763,7 +763,7 @@ void MapExtras::BlockInfo::prepare(Block *mblock)
if (z_diff >= 0)
tile = info->body[z_diff][xx + (yy*info->dim_x)];
else
tile = info->roots[info->roots_depth - 1 - z_diff][xx + (yy*info->dim_x)];
tile = info->roots[-1 - z_diff][xx + (yy*info->dim_x)];
if (tile.whole && !(tile.bits.blocked))
{
df::coord pos = pp->pos;