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flutter: 实现 fen()

This commit is contained in:
Calcitem 2020-11-08 20:03:42 +08:00
parent 009dacc320
commit 8a67bc5599
2 changed files with 108 additions and 12 deletions
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2
src/ui/flutter/lib/mill/mill.dart
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@ -24,7 +24,7 @@ enum Phase { none, ready, placing, moving, gameOver }
enum Action { none, select, place, remove } enum Action { none, select, place, remove }
enum GameOverReason { enum GameOverReason {
loseReasonNoReason, noReason,
loseReasonlessThanThree, loseReasonlessThanThree,
loseReasonNoWay, loseReasonNoWay,
loseReasonBoardIsFull, loseReasonBoardIsFull,

118
src/ui/flutter/lib/mill/position.dart
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@ -17,8 +17,23 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. along with this program. If not, see <http://www.gnu.org/licenses/>.
*/ */
import '../mill/mill.dart';
import '../mill/recorder.dart'; import '../mill/recorder.dart';
import 'mill.dart';
class StateInfo {
/*
// Copied when making a move
int rule50 = 0;
int pliesFromNull = 0;
get rule50 => _rule50;
set rule50(int value) => _rule50 = value;
get pliesFromNull => _pliesFromNull;
set pliesFromNull(int value) => _pliesFromNull = value;
*/
}
class Position { class Position {
GameResult result = GameResult.pending; GameResult result = GameResult.pending;
@ -26,6 +41,25 @@ class Position {
List<String> _board = List<String>(49); // 7 * 7 List<String> _board = List<String>(49); // 7 * 7
MillRecorder _recorder; MillRecorder _recorder;
int rule50 = 0;
int pliesFromNull = 0;
Phase phase = Phase.none;
Action action = Action.none;
int pieceCountInHandBlack = 12;
int pieceCountInHandWhite = 12;
int pieceCountOnBoardBlack = 0;
int pieceCountOnBoardWhite = 0;
int pieceCountNeedRemove = 0;
int gamePly = 0;
StateInfo st;
String them;
String winner;
GameOverReason gameOverReason = GameOverReason.noReason;
Position.init() { Position.init() {
for (var i = 0; i < _board.length; i++) { for (var i = 0; i < _board.length; i++) {
_board[i] ??= Piece.noPiece; _board[i] ??= Piece.noPiece;
@ -47,27 +81,89 @@ class Position {
/// fen() returns a FEN representation of the position. /// fen() returns a FEN representation of the position.
String fen() { String fen() {
// TODO
var ss = ''; var ss = '';
// Piece placement data
for (var file = 1; file <= 3; file++) { for (var file = 1; file <= 3; file++) {
for (var rank = 1; rank <= 8; rank++) { for (var rank = 1; rank <= 8; rank++) {
// //
final piece = pieceOn((file - 1) * 8 + rank + 8); final piece = pieceOn(squareToIndex[makeSquare(file, rank)]);
ss += piece;
if (piece == Piece.noPiece) {
} else {
ss += piece;
}
} }
if (file < 9) ss += '/'; if (file == 3)
ss += ' ';
else
ss += '/';
} }
ss += ' $side'; // Active color
ss += _sideToMove;
ss += " ";
// Phrase
switch (phase) {
case Phase.none:
ss += "n";
break;
case Phase.ready:
ss += "r";
break;
case Phase.placing:
ss += "p";
break;
case Phase.moving:
ss += "m";
break;
case Phase.gameOver:
ss += "o";
break;
default:
ss += "?";
break;
}
ss += " ";
// Action
switch (action) {
case Action.place:
ss += "p";
break;
case Action.select:
ss += "s";
break;
case Action.remove:
ss += "r";
break;
default:
ss += "?";
break;
}
ss += " ";
ss += pieceCountOnBoardBlack.toString() +
" " +
pieceCountInHandBlack.toString() +
" " +
pieceCountOnBoardWhite.toString() +
" " +
pieceCountInHandWhite.toString() +
" " +
pieceCountNeedRemove.toString() +
" ";
int sideIsBlack = _sideToMove == Color.black ? 1 : 0;
ss +=
rule50.toString() + " " + (1 + (gamePly - sideIsBlack) ~/ 2).toString();
// step counter // step counter
ss += '${_recorder?.halfMove ?? 0} ${_recorder?.fullMove ?? 0}'; //ss += '${_recorder?.halfMove ?? 0} ${_recorder?.fullMove ?? 0}';
print("fen = " + ss);
return ss; return ss;
} }