mchess-server/types/common.go

package types

type Coordinate struct {
	Col int `json:"col"`
	Row int `json:"row"`
}

type Move struct {
	StartSquare Coordinate `json:"startSquare"`
	EndSquare   Coordinate `json:"endSquare"`
}

type PieceClass string

const (
	Pawn   PieceClass = "pawn"
	Rook   PieceClass = "rook"
	Knight PieceClass = "knight"
	Bishop PieceClass = "bishop"
	Queen  PieceClass = "queen"
	King   PieceClass = "king"
)

type ChessColor string

const (
	White ChessColor = "white"
	Black ChessColor = "black"
)

func (c ChessColor) Opposite() ChessColor {
	if c == White {
		return Black
	} else {
		return White
	}
}

type Piece struct {
	Class    PieceClass
	Color    ChessColor
	HasMoved bool //we need this for pawns (first move is special) and rooks+king (for castling)
}