Struct Board

pub struct Board { /* private fields */ }

Default implementation of the SweeperBoard trait

Implementations

impl Board

Helper methods to help implement the trait

pub fn height(&self) -> usize

A convenient alias from self.cells.len().

pub fn width(&self) -> usize

A convenient alias from self.cells[0].len(). Guarateed to return because the height of the board is never less than 9.

pub fn count_adjacent_mines(&self, i: usize, j: usize) -> usize

Trait Implementations

impl SweeperBoard<Cell> for Board

fn new(height: usize, width: usize, mine_count: usize) -> Result<Self, Error>

Create a new minesweeper board. height and width cannot be under 9, while mine_count cannot exceed height * width - 9 since the initial cell and its neighbors must be a free cell. Return error if given invalid configuration.

fn open(&mut self, i: usize, j: usize) -> &CellKind

Open a cell, propagate if all neighboring cell is a free cell. Opening an opened cell will propagate if flagged cell count is equal to surrounding mine count.

Propagation is stopped when propagation reached a mine cell.

fn flag(&mut self, i: usize, j: usize) -> &CellState

Flag a cell. Flagged cell cannot be opened until unflagged. Remove the flag by flagging a flagged cell again. Flagged cell counts toward opening an opened cell propagation.

fn open_save(&mut self, i: usize, j: usize) -> Result<&CellKind, Error>

fn flag_save(&mut self, i: usize, j: usize) -> Result<&CellState, Error>

fn state(&self) -> &BoardState

fn cells(&self) -> &Vec<Vec<Cell>>