Lots of changes

Sources/Engine/Pieces/Piece.swift

@@ -1,4 +1,4 @@
-enum Kind: String, CaseIterable {
+public enum Kind: String, CaseIterable {
 	case Pawn, Knight, Bishop, Rook, Queen, King
 
 	var value: Int8 {
@@ -39,14 +39,28 @@ enum Kind: String, CaseIterable {
 	}
 }
 
-protocol Piece {
-	var board: Board? { get }
-	var color: Color { get }
-	var unicodeRepresentation: String { get }
-	var kind: Kind { get }
-	var position: Square.Position { get }
-	var pseudoLegalPositions: [Square.Position] { get }
-	var legalPositions: [Square.Position] { get }
-	func move(to dst: Square.Position) -> Bool
-	func isLegal(on pos: Square.Position) -> Bool
+public class Piece {
+	#warning("TODO: TO be removed, handle everything through the delegate")
+	internal weak var board: Board?
+	public internal(set) var color: Color
+	public var unicodeRepresentation: String {
+		return ""
+	}
+	public internal(set) var kind: Kind
+	public internal(set) var position: Square.Position
+	internal var pseudoLegalPositions: [Square.Position] {
+		return []
+	}
+	internal var legalPositions: [Square.Position] {
+		return []
+	}
+	internal var delegate: EventDelegate?
+	internal func move(to dst: Square.Position) {}
+	internal func isLegal(on pos: Square.Position) -> Bool { false }
+
+	internal init(kind: Kind, on pos: Square.Position, with col: Color) {
+		self.kind = kind
+		self.position = pos
+		self.color = col
+	}
 }