質問編集履歴
1
質問内容の改変
test
CHANGED
@@ -1 +1 @@
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1
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-
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一つのメソッドを呼んだときと複数のメソッドを呼んだときの違いがわからない
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test
CHANGED
@@ -42,28 +42,76 @@
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// defaultBoard[3][3] = BLACK_PIECE
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// defaultBoard[4][3] = WHITE_PIECE
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// defaultBoard[3][4] = WHITE_PIECE
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// defaultBoard[4][4] = BLACK_PIECE
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//
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// 検証のために石の置き方を変えてます。
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defaultBoard[
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defaultBoard[3][0] = BLACK_PIECE
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defaultBoard[3][1] = WHITE_PIECE
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defaultBoard[3][2] = WHITE_PIECE
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defaultBoard[3][3] = WHITE_PIECE
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defaultBoard[3][5] = WHITE_PIECE
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defaultBoard[3][6] = WHITE_PIECE
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defaultBoard[3][7] = BLACK_PIECE
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defaultBoard[3][7] = BLACK_PIECE
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defaultBoard[0][4] = BLACK_PIECE
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defaultBoard[1][
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defaultBoard[1][4] = WHITE_PIECE
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defaultBoard[2][
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defaultBoard[2][4] = WHITE_PIECE
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defaultBoard[4][
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defaultBoard[4][4] = WHITE_PIECE
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defaultBoard[5][4] = WHITE_PIECE
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defaultBoard[6][
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defaultBoard[6][4] = WHITE_PIECE
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defaultBoard[7][4] = WHITE_PIECE
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defaultBoard[2][5] = WHITE_PIECE
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defaultBoard[1][6] = WHITE_PIECE
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defaultBoard[0][7] = BLACK_PIECE
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defaultBoard[4][5] = WHITE_PIECE
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defaultBoard[5][6] = WHITE_PIECE
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defaultBoard[6][7] = BLACK_PIECE
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defaultBoard[2][3] = WHITE_PIECE
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defaultBoard[1][2] = WHITE_PIECE
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defaultBoard[0][1] = BLACK_PIECE
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defaultBoard[4][3] = WHITE_PIECE
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defaultBoard[5][2] = WHITE_PIECE
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defaultBoard[6][1] = WHITE_PIECE
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defaultBoard[7][0] = WHITE_PIECE
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const Board = () => {
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const [squares, setSquares] = useState(defaultBoard)
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@@ -74,16 +122,58 @@
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const boardInit = () => {
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if (!window.confirm('リセットしてもよろしいですか?')) {
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return false
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}
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for (let x = 0; x < 8; x++) {
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for (let y = 0; y < 8; y++) {
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let newSquares = squares.concat()
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newSquares[x][y] = null
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setSquares(newSquares)
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}
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}
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let newSquares = squares.concat()
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newSquares[3][3] = BLACK_PIECE
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newSquares[4][3] = WHITE_PIECE
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newSquares[3][4] = WHITE_PIECE
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newSquares[4][4] = BLACK_PIECE
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setCurrentPiece(BLACK_PIECE)
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setSquares(newSquares)
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}
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const reversePiece = (currentX, currentY, x, y, prevSquares) => {
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const nextPiece = currentPiece === BLACK_PIECE ? WHITE_PIECE : BLACK_PIECE
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const newSquares = squares.concat()
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let nextYIndex = currentY + y
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let nextXIndex = currentX + x
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let newSquares = squares.concat()
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if (newSquares[nextYIndex][nextXIndex] === nextPiece) {
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@@ -96,7 +186,7 @@
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newSquares[currentY][currentX] = currentPiece
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setSquares(newSquares)
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setSquares([...newSquares])
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setCurrentPiece(nextPiece)
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@@ -112,9 +202,9 @@
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console.log('次が何もおいてないから元に戻したい')
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console.log(prevSquares)
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console.log([...prevSquares])
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setSquares(prevSquares)
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setSquares([...prevSquares])
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break
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@@ -122,8 +212,6 @@
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newSquares[nextYIndex][nextXIndex] = currentPiece
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nextYIndex = nextYIndex + y
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nextXIndex = nextXIndex + x
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@@ -136,9 +224,9 @@
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console.log('挟み撃ちできる自分のコマがないから元に戻したい')
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console.log(prevSquares)
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console.log([...prevSquares])
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setSquares(prevSquares)
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setSquares([...prevSquares])
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break
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@@ -162,8 +250,32 @@
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, 1, -1, prevSquares) // 右上
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, 1, 0, prevSquares) // 右
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, 1, 1, prevSquares) // 右下
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, 0, 1, prevSquares) // 下
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, -1, 1, prevSquares) // 左下
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, -1, 0, prevSquares) // 左
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prevSquares = JSON.parse(JSON.stringify(squares));
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reversePiece(x, y, -1, -1, prevSquares) // 左上
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}
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}
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@@ -204,53 +316,63 @@
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<>
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<button
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onClick={ boardInit }
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>
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最初からやり直す
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</button>
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<Status>{ status }</Status>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 0) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 1) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 2) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 3) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 4) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 5) }
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</BoardRow>
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</BoardRow>
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<BoardRow>
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<BoardRow>
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{ renderSquare(
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{ renderSquare(squares, 6) }
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</BoardRow>
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</BoardRow>
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-
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<BoardRow>
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<BoardRow>
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-
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{ renderSquare(
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375
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{ renderSquare(squares, 7) }
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</BoardRow>
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378
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@@ -264,6 +386,8 @@
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export default Board;
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+
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```
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@@ -342,9 +466,9 @@
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342
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343
467
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344
468
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345
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-
しかし以下の盤面の時、
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469
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+
しかし以下の盤面の時、コマを裏返そうとした時に
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346
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-
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470
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+
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347
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-
![イメージ説明](4
|
471
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+
![イメージ説明](498961ac5cc54f19e2ee5accd5ba6c23.png)
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348
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349
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350
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@@ -360,11 +484,35 @@
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let prevSquares = JSON.parse(JSON.stringify(squares));
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362
486
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363
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-
reversePiece(x, y, 0, -1, prevSquares) // 上
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487
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+
reversePiece(x, y, 0, -1, prevSquares) // 上
|
364
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-
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488
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+
|
365
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-
prevSquares = JSON.parse(JSON.stringify(squares));
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489
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+
prevSquares = JSON.parse(JSON.stringify(squares));
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490
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+
|
366
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-
|
491
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+
reversePiece(x, y, 1, -1, prevSquares) // 右上
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492
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+
|
493
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+
prevSquares = JSON.parse(JSON.stringify(squares));
|
494
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+
|
495
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+
reversePiece(x, y, 1, 0, prevSquares) // 右
|
496
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+
|
497
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+
prevSquares = JSON.parse(JSON.stringify(squares));
|
498
|
+
|
499
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+
reversePiece(x, y, 1, 1, prevSquares) // 右下
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500
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+
|
501
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+
prevSquares = JSON.parse(JSON.stringify(squares));
|
502
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+
|
367
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-
reversePiece(x, y, 0, 1, prevSquares) // 下
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503
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+
reversePiece(x, y, 0, 1, prevSquares) // 下
|
504
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+
|
505
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+
prevSquares = JSON.parse(JSON.stringify(squares));
|
506
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+
|
507
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+
reversePiece(x, y, -1, 1, prevSquares) // 左下
|
508
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+
|
509
|
+
prevSquares = JSON.parse(JSON.stringify(squares));
|
510
|
+
|
511
|
+
reversePiece(x, y, -1, 0, prevSquares) // 左
|
512
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+
|
513
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+
prevSquares = JSON.parse(JSON.stringify(squares));
|
514
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+
|
515
|
+
reversePiece(x, y, -1, -1, prevSquares) // 左上
|
368
516
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|
369
517
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}
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370
518
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|
@@ -372,14 +520,74 @@
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372
520
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373
521
|
```
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374
522
|
|
375
|
-
|
376
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-
|
377
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-
|
523
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+
全て裏返ってしまいます。
|
378
|
-
|
524
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+
|
525
|
+
|
526
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+
|
379
|
-
![イメージ説明](4
|
527
|
+
![イメージ説明](0badbc4d3a82a5df83c507ca31f77f16.png)
|
528
|
+
|
529
|
+
|
530
|
+
|
380
|
-
|
531
|
+
しかし全ての方向に対して裏返す処理を行う(複数のメソッドを呼んだ時)のではなく、
|
381
|
-
|
382
|
-
|
532
|
+
|
383
|
-
|
533
|
+
単一方向で呼んだ場合(一つのメソッドだけを呼んだ時)だと
|
534
|
+
|
535
|
+
|
536
|
+
|
537
|
+
```js
|
538
|
+
|
539
|
+
const handleClick = (x, y) => {
|
540
|
+
|
541
|
+
if (squares[y][x] === null) {
|
542
|
+
|
543
|
+
let prevSquares = JSON.parse(JSON.stringify(squares));
|
544
|
+
|
545
|
+
// reversePiece(x, y, 0, -1, prevSquares) // 上
|
546
|
+
|
547
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
548
|
+
|
549
|
+
// reversePiece(x, y, 1, -1, prevSquares) // 右上
|
550
|
+
|
551
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
552
|
+
|
553
|
+
// reversePiece(x, y, 1, 0, prevSquares) // 右
|
554
|
+
|
555
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
556
|
+
|
557
|
+
// reversePiece(x, y, 1, 1, prevSquares) // 右下
|
558
|
+
|
559
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
560
|
+
|
561
|
+
reversePiece(x, y, 0, 1, prevSquares) // 下 // ---> ここだけ呼ぶ
|
562
|
+
|
563
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
564
|
+
|
565
|
+
// reversePiece(x, y, -1, 1, prevSquares) // 左下
|
566
|
+
|
567
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
568
|
+
|
569
|
+
// reversePiece(x, y, -1, 0, prevSquares) // 左
|
570
|
+
|
571
|
+
// prevSquares = JSON.parse(JSON.stringify(squares));
|
572
|
+
|
573
|
+
// reversePiece(x, y, -1, -1, prevSquares) // 左上
|
574
|
+
|
575
|
+
}
|
576
|
+
|
577
|
+
}
|
578
|
+
|
579
|
+
```
|
580
|
+
|
581
|
+
|
582
|
+
|
583
|
+
何も裏返ることなく、前回の盤面の状態(prevSquares)を保ったままです。
|
584
|
+
|
585
|
+
この、「一つのメソッドを呼んだときと複数のメソッドを呼んだときの違い」がよくわかってません。
|
586
|
+
|
587
|
+
![イメージ説明](ef999c41fcf8209253c57a1dea9d21ea.png)
|
588
|
+
|
589
|
+
|
590
|
+
|
591
|
+
|
384
592
|
|
385
593
|
よろしくお願いします。
|