cdricms/swift-chess
1
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Linear + Diagonal moves

Browse Source
This commit is contained in:
cdricms
2024-06-27 18:09:01 +02:00
parent bc145da022
commit 8b5c2a592e
11 changed files with 179 additions and 108 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
Sources/Engine/Pieces/Knight.swift
View File

@@ -1,40 +1,37 @@
internal final class Knight: Piece {
internal weak var board: Board?
internal var kind: Kind = .Knight
final class Knight: Piece {
weak var board: Board?
var kind: Kind = .Knight
internal var unicodeRepresentation: String {
var unicodeRepresentation: String {
return color == .Black ? "♞" : "♘"
}
internal var color: Color
var color: Color
internal var position: Square.Position
var position: Square.Position
internal var pseudoLegalPositions: [Square.Position] {
var pseudoLegalPositions: [Square.Position] {
let directions: [Square.Position] = [
.init(file: position.file + 1, rank: position.rank + 2),
.init(file: position.file - 1, rank: position.rank + 2),
.init(file: position.file + 1, rank: position.rank - 2),
.init(file: position.file - 1, rank: position.rank - 2),
.init(file: position.file + 2, rank: position.rank + 1),
.init(file: position.file - 2, rank: position.rank + 1),
.init(file: position.file + 2, rank: position.rank - 1),
.init(file: position.file - 2, rank: position.rank - 1)
.init(rank: position.rank + 2, file: position.file + 1),
.init(rank: position.rank + 2, file: position.file - 1),
.init(rank: position.rank - 2, file: position.file + 1),
.init(rank: position.rank - 2, file: position.file - 1),
.init(rank: position.rank + 1, file: position.file + 2),
.init(rank: position.rank + 1, file: position.file - 2),
.init(rank: position.rank - 1, file: position.file + 2),
.init(rank: position.rank - 1, file: position.file - 2)
]
return directions.filter {
let index = $0.index
return index < 0 || index > 63
}
return directions.filter { $0.index != nil }
}
internal var legalPositions: [Square.Position] {
var legalPositions: [Square.Position] {
return pseudoLegalPositions.filter { isLegal(on: $0) }
}
internal func move(to dst: Square.Position) -> Bool {
func move(to dst: Square.Position) -> Bool {
return false
}
internal func isLegal(on pos: Square.Position) -> Bool {
func isLegal(on pos: Square.Position) -> Bool {
if let board = board, let s = board[pos] {
if let p = s.piece {
if p.color == color { return false }
@@ -48,7 +45,7 @@ internal final class Knight: Piece {
return true
}
internal init(color: Color, on position: Square.Position) {
init(color: Color, on position: Square.Position) {
self.color = color
self.position = position
}