function resetBoard() {
  // Set the gameOver variable to false
  gameOver = false;
  // Reset board
  setMap(BOARD);
  // Clear text
  clearText();
  // Set current player to Black
  nowPlaying = PLAYERS.BLACK;
  // Set selection sprite coords to top-left corner
  selectionCoords = { x: 0, y: 0 };
  // Update the selection sprite
  updateSelectionSprite();
  // Set selection mode to PIECE
  changeToPiece();
}
Resets the board to its starting position