var cellSize;     // Cell size;

var res=25;      // resolution 

​

function setup() {

  createCanvas(600, 600);

  cellSize=width/res;

  for(var i=0; i<res; i++)

  {

  for(var j=0; j<res; j++)

        {

        grid.push(new Cell(i*cellSize, j*cellSize, res));

        }

  }

}

​

function draw() {

  background(220);

  for(var i=0; i<grid.length; i++)

  {

  grid[i].show(); 

  }

​

}

​

function mousePressed()

{

if((mouseY<height) && (mouseX<width))

{

var row=  floor(mouseX/ (width/ res));

var col=  floor(mouseY/ ((height)/ res));

grid[ind(row, col)].changeCol();

}

​

}

​

function ind(r, c)    // Returns Array index given a row/ col

{

var arrind=0;

arrind=r * (width/cellSize) + c;

return arrind;  

}