box.txt

function Box(row, column) {
  this.domElement = document.getElementById(`${row}${column}`);
  if (column > 1) {
    this.leftNeighbour = {
      domElement: document.getElementById(`${row}${column - 1}`),
      weight: 1,
    };
  }
  if (column < 50) {
    this.rightNeighbour = {
      domElement: document.getElementById(`${row}${column + 1}`),
      weight: 1,
    };
  }
  if (row > 1) {
    this.upNeighbour = {
      domElement: document.getElementById(`${row - 1}${column}`),
      weight: 1,
    };
  }
  if (row < 25) {
    this.downNeighbour = {
      domElement: document.getElementById(`${row + 1}${column}`),
      weight: 1,
    };
  }
  if (row > 1 && column > 1) {
    this.upLeftNeighbour = {
      domElement: document.getElementById(`${row - 1}${column - 1}`),
      weight: 1.41,
    };
  }
  if (row > 1 && column < 50) {
    this.upRightNeighbour = {
      domElement: document.getElementById(`${row + 1}${column + 1}`),
      weight: 1.41,
    };
  }
  if (row < 25 && column > 1) {
    this.downLeftNeighbour = {
      domElement: document.getElementById(`${row + 1}${column - 1}`),
      weight: 1.41,
    };
  }
  if (row < 25 && column < 50) {
    this.downRightNeighbour = {
      domElement: document.getElementById(`${row + 1}${column + 1}`),
      weight: 1.41,
    };
  }
  this.allNeighbours = [
    this.upNeighbour,
    this.downNeighbour,
    this.leftNeighbour,
    this.rightNeighbour,
    this.upLeftNeighbour,
    this.upRightNeighbour,
    this.downLeftNeighbour,
    this.downRightNeighbour,
  ];
  this.neighbours = this.allNeighbours.filter(
    (neighbour) => neighbour !== undefined
  );
}