create checkers movement in javascript

To create checkers movement in javascript, you will need to first create a checkers board with 8 rows and 8 columns. Each cell of the board will be represented as an object with the following properties:

  • x: the x-coordinate of the cell
  • y: the y-coordinate of the cell
  • occupied: a boolean value indicating whether the cell is occupied by a checker piece
  • pieceColor: a string value indicating the color of the checker piece occupying the cell (null if the cell is not occupied)

Here is some sample code to create the board and initialize the cells:

index.tsx
let board = [];

for (let i = 0; i < 8; i++) {
  board[i] = [];
  for (let j = 0; j < 8; j++) {
    board[i][j] = {
      x: i,
      y: j,
      occupied: false,
      pieceColor: null
    };
  }
}

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Next, you will need to create functions to move the checker pieces on the board. Here is some sample code to move a piece from one cell to another:

index.tsx
function movePiece(x1, y1, x2, y2) {
  let fromCell = board[x1][y1];
  let toCell = board[x2][y2];

  if (fromCell.occupied && !toCell.occupied && isValidMove(fromCell, toCell)) {
    // move the piece
    toCell.occupied = true;
    toCell.pieceColor = fromCell.pieceColor;
    fromCell.occupied = false;
    fromCell.pieceColor = null;

    return true;
  }

  return false;
}

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The isValidMove function should check if the move is a valid checker move. Here is some sample code to check if the move is valid:

index.tsx
function isValidMove(fromCell, toCell) {
  let dx = Math.abs(toCell.x - fromCell.x);
  let dy = Math.abs(toCell.y - fromCell.y);

  if (dx === 1 && dy === 1) {
    // diagonal move
    return true;
  } else if (dx === 2 && dy === 2) {
    // jump move
    let jumpCell = board[(fromCell.x + toCell.x) / 2][(fromCell.y + toCell.y) / 2];
    if (jumpCell.occupied && jumpCell.pieceColor !== fromCell.pieceColor) {
      return true;
    }
  }

  return false;
}

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With these functions, you should be able to create a basic checkers game in javascript.

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related categories

javascript
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