75 lines
2.2 KiB
Dart
75 lines
2.2 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:mchess/chess/chess_square_inner_draggable.dart';
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import 'package:mchess/chess_bloc/chess_bloc.dart';
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import 'package:mchess/chess_bloc/chess_events.dart';
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import 'package:mchess/chess_bloc/promotion_bloc.dart';
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import 'package:mchess/utils/chess_utils.dart';
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class ChessSquareOuterDragTarget extends StatelessWidget {
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final ChessCoordinate coordinate;
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final ChessPiece containedPiece;
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const ChessSquareOuterDragTarget(
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{super.key,
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required this.coordinate,
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required this.containedPiece});
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@override
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Widget build(BuildContext context) {
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return DragTarget<PieceDragged>(
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onWillAccept: (move) {
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if (move?.fromSquare == coordinate) {
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return false;
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}
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return true;
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},
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onAccept: (pieceDragged) {
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// Replace the dummy value with the actual target of the move.
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pieceDragged.toSquare = coordinate;
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if (isPromotionMove(pieceDragged)) {
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var move = ChessMove(
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from: pieceDragged.fromSquare, to: pieceDragged.toSquare);
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PromotionBloc.getInstance().add(PawnMovedToPromotionField(
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move: move, colorMoved: ChessBloc.myColor!));
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} else if (coordinate != pieceDragged.fromSquare) {
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ChessBloc.getInstance().add(OwnPieceMoved(
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startSquare: pieceDragged.fromSquare,
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endSquare: pieceDragged.toSquare,
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piece: pieceDragged.movedPiece!));
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}
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},
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builder: (context, candidateData, rejectedData) {
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return ChessSquareInnerDraggable(
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coordinate: coordinate,
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containedPiece: containedPiece,
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);
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},
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);
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}
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bool isPromotionMove(PieceDragged move) {
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bool isPromotion = false;
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if (move.movedPiece!.pieceClass != ChessPieceClass.pawn) {
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return isPromotion;
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}
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switch (ChessBloc.myColor) {
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case ChessColor.black:
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if (move.toSquare.row == 1) {
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isPromotion = true;
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}
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break;
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case ChessColor.white:
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if (move.toSquare.row == 8) {
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isPromotion = true;
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}
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break;
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case null:
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break;
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}
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return isPromotion;
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}
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}
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