69 lines
1.8 KiB
Dart
69 lines
1.8 KiB
Dart
import 'package:flutter_bloc/flutter_bloc.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/utils/chess_utils.dart';
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class PromotionBloc extends Bloc<PromotionEvent, PromotionState> {
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static final PromotionBloc _instance = PromotionBloc._internal();
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static late ChessMove move;
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PromotionBloc._internal() : super(PromotionState.init()) {
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on<PawnMovedToPromotionField>(promotionMoveHandler);
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on<PieceChosen>(pieceChosenHandler);
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}
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void promotionMoveHandler(
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PawnMovedToPromotionField event,
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Emitter<PromotionState> emit,
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) {
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move = event.move;
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emit(PromotionState(
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showPromotionDialog: true, colorMoved: event.colorMoved));
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}
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void pieceChosenHandler(
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PieceChosen event,
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Emitter<PromotionState> emit,
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) {
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ChessBloc.getInstance()
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.add(OwnPromotionPlayed(pieceClass: event.pieceClass, move: move));
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emit(PromotionState(showPromotionDialog: false, colorMoved: event.color));
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}
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factory PromotionBloc.getInstance() {
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return PromotionBloc();
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}
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factory PromotionBloc() {
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return _instance;
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}
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}
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abstract class PromotionEvent {}
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class PawnMovedToPromotionField extends PromotionEvent {
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final ChessMove move;
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final ChessColor colorMoved;
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PawnMovedToPromotionField({required this.move, required this.colorMoved});
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}
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class PieceChosen extends PromotionEvent {
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final ChessPieceClass pieceClass;
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final ChessColor color;
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PieceChosen({required this.pieceClass, required this.color});
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}
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class PromotionState {
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final bool showPromotionDialog;
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final ChessColor colorMoved;
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PromotionState({required this.showPromotionDialog, required this.colorMoved});
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factory PromotionState.init() {
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return PromotionState(
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showPromotionDialog: false, colorMoved: ChessColor.white);
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}
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}
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