chessground 4.0.0

Chess board UI developed for lichess.org. It has no chess logic inside so it can be used for chess variants.

4.0.0

New features:

• Add a ChessboardEditor widget, intended to be used as the basis for a board editor like lichess.org/editor
• Add the writeFen helper function.

Breaking changes:

• Requires an SDK version of at least 3.3.0.
• Chessground is now dependant on dartchess. It is only used for the models, and not for the game logic, so Chessground can still be used with any chess library.
• Board has been renamed to Chessboard, along with other classes.

Bug fixes:

• Fix arrow bad shape when new destination is the same as the origin: it now returns a circle.
• Fix unsetting premoves:
  • When a premove is set, tapping on the same origin square will now unset it.
  • dragging a piece to an invalid square will now unset the premove.
  • dragging a piece off the board will now unset the premove.

3.2.0

• Add pieceShiftMethod to BoardSetttings, with possible values: either (default), drag, or tapTwoSquares.

3.1.2

• Any simultaneous touch on the board will now cancel the current piece selection or drag.

3.1.1

• Allow shapes to be drawn on a non-interactable board.
• Fix a bug where the board would be stuck after transitioning from a non-interactable board to an interactable one.
• Selecting a piece will now clear all shapes on the board.
• Add the scale property to all Shape classes. Use a 0.8 scale for the shapes being drawn on the board to distinguish them from the already drawn ones.

3.1.0

• Add an optional scale parameter to arrows (default is scale: 1.0, matching the previous behavior).
• Implement BoardData.copyWith method to allow updating the board data
• Implement BoardData equality and hashcode operators
• Implement BoardSettings equality and hashcode operators

3.0.0

Improve board interaction and add support for drawing shapes while playing.

Playing:

• pieces are now moved with pointer down events, instead of a tap events (pointer down followed by a pointer up event): this allows to move a piece faster
• premoves are not anymore cleared when selecting another piece: this matches lichess website behaviour and allow to prepare another move along with the premove that is currently set

Drawing shapes (experimental)

• drawing shapes is now possible while keeping the normal board play interaction (before it was either one or another mode)
• one can draw a shape by holding a finger to an empty square while using a second finger to draw a shape anywhere in the board
• a double tap on an empty square will clear all shapes at once
• to clear a single shape is still supported: draw the same shape again

2.6.4

• Fix coordinates and board display on devices with RightToLeft Directionality.

2.6.3

• Improve coordinates display on the board.

2.6.2

• Fix borderRadius settings not being applied to the board highlights.

2.6.1

• Fix BoardSettings copyWith method.

2.6.0

• Add 2 new settings: borderRadius and boxShadow.

2.5.0

• Add a new shape type: piece (useful to show promotion hints).

2.4.1

• Don't clip board: fix annotations display on edge.

2.4.0

• Deprecate BoardTheme and export Background.

2.3.0

• Remove handling of android gestures exclusion.

2.2.1

• Upgrade fast_immutable_collections to version 10.0.0.

2.2.0

• Improve quality of PNG files, fix wrong rendering of some piece set like "Cardinal". More info: https://github.com/lichess-org/flutter-chessground/pull/28.
• Piece cache size is now rounded to the nearest integer above the actual value.

2.1.0

• BoardData.sideToMove is now optional with no default value, as well as BoardData.isCheck and constructor assertion will guarantee they are set when needed.

2.0.0

• BoardData.sideToMove is now a required parameter.

1.6.1

• Fix missing blindfoldMode to BoardSettings.copyWith

1.6.0

• Add blindfold mode

1.5.3

• Don't run premove timer if premove is not set

1.5.2

• Don't try to execute a premove if it is not allowed.

1.5.1

• Use an immediate timer to execute premove, instead of a post frame callback.

1.5.0

• premove is not anymore a local state, so it can be controlled by the parent

1.4.1

• Change the autoQueenPromotionOnPremove default setting to true

1.4.0

• Add a drawing shapes option
• Add the autoQueenPromotionOnPremove setting

1.3.1

• Improve check highlight appearance and fix rendering with Impeller.

1.3.0

• Remove opacity on origin piece when dragging because of performance issue with impeller engine.

1.2.0

• Add isDrop meta info to onMove callback.

1.1.0

• Add Caliente, Kiwen-Suwi and MPChess piece sets
• Fix promotion menu still showing when going back in moves history

1.0.4

• tapping one's piece now cancels premove.

1.0.3

• showValidMoves board setting now applies to premoves.

1.0.2

• When premoving, tapping same piece will now deselect it (to be consistent with normal moves).

1.0.1

• Ensure premove square highlight takes precedence over last move.

1.0.0

Initial release.