Function tombstone_visit 

pub fn tombstone_visit(
    tombstones: &mut BTreeMap<usize, i64>,
    cells: &mut Cells,
    placed: &mut [Placed],
    id: usize,
    elapsed: i64,
) -> bool

TombstoneComponent’s scheduled update: the time left runs down; at none the tombstone goes (its cell is plain ground again). Returns whether it went.

Original: FUN_140058130.