Enum TileKind 

pub enum TileKind {
    Box,
    BoxOnGoal,
    Pusher,
    PusherOnGoal,
    Floor,
    Goal,
    Wall,
}

What kind of game board element is one tile of that board.

Variants

Box

BoxOnGoal

Pusher

PusherOnGoal

Floor

Goal

Wall

Implementations

impl TileKind

pub fn is_wall(&self) -> bool

Tile is a wall.

pub fn has_pusher(&self) -> bool

Tile carries a pusher, whether or not it also carries a goal.

pub fn has_box(&self) -> bool

Tile carries a box, whether or not it also carries a goal.

pub fn has_goal(&self) -> bool

Tile carries a goal, whether or not a box or a pusher stands on it.

BoxOnGoal and PusherOnGoal both match. Because of that, counting goals and counting boxes are two independent scans of a board and the n-th box is not the counterpart of the n-th goal.

pub fn is_empty_floor(&self) -> bool

Tile holds nothing at all: no wall, no piece and no goal.

This is Floor, the Default variant, and it is the only tile kind that carries no board content. Its negation is exactly what GameBoard::trim() retains, and a board of nothing but empty floor is what GameBoard::is_blank() reports.

pub fn can_start_a_row(&self) -> bool

Tile may be the first non-empty tile of a board row.

This is a SokobanYASC board condition: the first non-empty tile in each row must be a wall or a box standing on a goal. A plain Box does not qualify, and neither does a lone goal or a pusher.

Nothing in this crate enforces the condition - GameBoard places no restrictions on itself, and boards are edited long before they are played. The predicate is here for callers that do want to check it.

Trait Implementations

impl Clone for TileKind

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for TileKind

impl Debug for TileKind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TileKind

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TileKind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for TileKind

impl Hash for TileKind

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TileKind

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for TileKind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TileKind