BuiltVariant class

Constructors

BuiltVariant({required Variant data, required List<PieceDefinition> pieces, required Map<String, PieceDefinition> pieceLookup, required Map<String, int> pieceIndexLookup, required List<int> promotionPieces, required List<int> promotablePieces, Map<int, int>? promoLimits, Map<int, List<int>>? promoMap, PromotionBuilder? promotionBuilder, DropBuilderFunction? dropBuilder, MoveChecker? passChecker, PieceMoveChecker? firstMoveChecker, required int epPiece, required int castlingPiece, required int rookPiece, required int royalPiece, required MaterialConditions<int> materialConditions, required Map<String, BuiltRegion> regions, required Map<int, List<String>> winRegions, required List<Action> actions, required Map<ActionEvent, List<Action>> actionsByEvent, StateTransformFunction<BishopState>? stateTransformer, List<MoveGenFunction<Move>> moveGenerators = const [], Map<Type, MoveProcessorFunction<Move>> moveProcessors = const {}, Map<Type, MoveFormatterFunction<Move>> algebraicMoveFormatters = const {}, Map<Type, MoveFormatterFunction<Move>> prettyMoveFormatters = const {}})
const
BuiltVariant.fromData(Variant data)
factory
BuiltVariant.standard()
factory

Properties

actions → List<Action>
final
actionsByEvent → Map<ActionEvent, List<Action>>
final
addCapturesToHand → bool
no setter
algebraicMoveFormatters → Map<Type, MoveFormatterFunction<Move>>
final
boardSize → BoardSize
The size of the board.
no setter
castling → bool
Whether this variant supports castling.
no setter
castlingOptions → CastlingOptions
The castling rules for this VariantData.
no setter
castlingPiece → int
final
data → Variant
final
defaultPromotablePiece → int
The first piece type in the piece map that's promotable.
no setter
dropBuilder → DropBuilderFunction?
final
enPassant → bool
Is en passant allowed in this variant?
no setter
epPiece → int
final
firstMoveChecker → PieceMoveChecker?
final
forbidChecks → bool
If this is true, it is impossible to make a move that checks anyone.
no setter
forcedCapture → ForcedCapture?
If this is set, non-capturing moves cannot be played while capturing moves are available. Examples are Antichess and Draughts.
no setter
gameEndConditions → GameEndConditionSet
no setter
gating → bool
Whether this variant involves gating.
no setter
gatingMode → GatingMode
What type of gating, if any, is used in this variant?
no setter
halfMoveDraw → int?
Set this to 100 for the 50-move rule in standard chess.
no setter
handsEnabled → bool
Are hands enabled in this variant? For example, Crazyhouse.
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasMoveGenerators → bool
Whether this variant has custom move generators.
no setter
hasPass → bool
Whether this variant has pass moves.
no setter
hasRegions → bool
Whether this variant has any region definitions.
no setter
hasWinRegions → bool
Whether this variant has any win regions.
no setter
materialConditions → MaterialConditions<int>
final
moveGenerators → List<MoveGenFunction<Move>>
final
moveProcessors → Map<Type, MoveProcessorFunction<Move>>
final
name → String
A human-friendly name.
no setter
outputOptions → OutputOptions
no setter
passChecker → MoveChecker?
final
pieceIndexLookup → Map<String, int>
final
pieceLookup → Map<String, PieceDefinition>
final
pieces → List<PieceDefinition>
final
pieceTypes → Map<String, PieceType>
The pieces to be used in this variant, in the form symbol: pieceType. Symbols are single uppercase letters, such as 'P' (pawn) or 'N' (knight).
no setter
pieceValues → Map<String, int>?
The relative values of pieces. These are usually already set in the PieceType definitions, so only use this if you want to override those. For example, you have a variant where a pawn is worth 200 instead of 100, but you still want to use the normal pawn definition.
no setter
prettyMoveFormatters → Map<Type, MoveFormatterFunction<Move>>
final
promoLimits → Map<int, int>?
final
promoMap → Map<int, List<int>>?
final
promotablePieces → List<int>
final
promotion → bool
Is promotion enabled?
no setter
promotionBuilder → PromotionBuilder?
final
promotionPieces → List<int>
final
regions → Map<String, BuiltRegion>
final
repetitionDraw → int?
Set this to 3 for the threefold repeition rule in standard chess.
no setter
rookPiece → int
final
royalPiece → int
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
startPosBuilder → StartPositionBuilder?
A builder function for variants with variable start positions, such as Chess 960.
no setter
startPosition → String?
A full starting position, specified as a FEN string.
no setter
stateTransformer → StateTransformFunction<BishopState>?
final
winRegions → Map<int, List<String>>
final

Methods

actionsForTrigger(ActionTrigger trigger, {bool checkPrecondition = true}) → Iterable<Action>
Generates all actions for trigger.
allowMovement(int piece, int square) → bool
For use with restricted movement regions - determines whether it is allowed for piece to move to square.
canFirstMove({required BishopState state, required int from, required int colour, required MoveDefinition moveDefinition}) → bool
canPass({required BishopState state, required int colour}) → bool
Determines whether player colour can pass their turn in state.
capturedPieces(BishopState state, {String? startPos, int? seed}) → Map<int, int>
capturedPiecesStr(BishopState state, {String? startPos, int? seed}) → Map<String, int>
copyWith({Variant? data, List<PieceDefinition>? pieces, Map<String, PieceDefinition>? pieceLookup, Map<String, int>? pieceIndexLookup, List<int>? promotionPieces, List<int>? promotablePieces, Map<int, int>? promoLimits, Map<int, List<int>>? promoMap, PromotionBuilder? promotionBuilder, DropBuilderFunction? dropBuilder, MoveChecker? passChecker, PieceMoveChecker? firstMoveChecker, int? royalPiece, int? epPiece, int? castlingPiece, int? rookPiece, MaterialConditions<int>? materialConditions, Map<String, BuiltRegion>? regions, Map<int, List<String>>? winRegions, List<Action>? actions, Map<ActionEvent, List<Action>>? actionsByEvent, StateTransformFunction<BishopState>? stateTransformer, List<MoveGenFunction<Move>>? moveGenerators, Map<Type, MoveProcessorFunction<Move>>? moveProcessors, Map<Type, MoveFormatterFunction<Move>>? algebraicMoveFormatters, Map<Type, MoveFormatterFunction<Move>>? prettyMoveFormatters}) → BuiltVariant
executeActions(ActionTrigger trigger) → List<ActionEffect>
Generates all effects for all actions triggered by trigger.
generateCustomMoves({required BishopState state, required int player, MoveGenParams params = MoveGenParams.normal}) → Iterable<Move>
generateDrops({required BishopState state, required int colour}) → List<Move>?
Generate all drop moves for player colour in state.
generatePromotionMoves({required StandardMove base, required BishopState state, PieceType? pieceType}) → List<StandardMove>?
Generates all possible moves for the base move, given state and pieceType.
getPromoPieces({BishopState? state, PieceType? pieceType, int? pieceIndex}) → List<int>
hasActionsForEvent(ActionEvent event) → bool
Whether this variant has actions for event.
inWinRegion(int piece, int square) → bool
Determins whether piece (including colour) is in one of its win regions, if it has any.
makeCustomMove(MoveProcessorParams<Move> params) → BishopState?
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
pieceFromSymbol(String symbol) → int
pieceHasWinRegions(int piece) → bool
piece should contain its colour.
pieceIndex(String symbol) → int
pieceIndices(List<String> symbols) → List<int>
pieceMapIntToStr<T>(Map<int, T> input, {bool fullPiece = false}) → Map<String, T>
pieceMapStrToInt<T>(Map<String, T> input, {bool fullPiece = false}) → Map<int, T>
pieceSymbol(int type, [int colour = Bishop.white]) → String
pieceType(int piece, [int? square]) → PieceType
toString() → String
A string representation of this object.
override
transformState(BishopState state, [int? player]) → BishopState

Operators

operator ==(Object other) → bool
The equality operator.
inherited