gobang/lib/flyweight/position.dart

import 'package:gobang/bridge/chess_shape.dart';
import 'package:gobang/flyweight/chess.dart';

/// 棋子位置；颜色由享元 [Chess] 共享，形状为外部状态。
class Position {
  double dx;
  double dy;
  Chess chess;
  ChessShape chessShape;

  Position(this.dx, this.dy, this.chess, {ChessShape? chessShape})
      : chessShape = chessShape ?? chess.chessShape;
}