let quadrille;

function setup() {
  createCanvas(4 * Quadrille.cellLength, 4 * Quadrille.cellLength);
  quadrille = createQuadrille(4, 4);
}

function draw() {
  background('#6495ED');
  drawQuadrille(quadrille);
}

function mouseClicked() {
  // property write
  quadrille.memory2D = [
    [150, 100],
    [null, '🫏'],
    [0, 70],
    ['🦂']
  ];
  // property read
  console.log(quadrille.memory2D[quadrille.mouseRow][quadrille.mouseCol]);
}

function keyPressed() {
  // property write
  quadrille.memory2D = ['🫏','🐍', '🦂', '🐵'];
  // property read
  console.log(quadrille.memory2D[quadrille.mouseRow]);
}