[false, false, false, false, false],

   [false, true, false, true, false],

  [false, false, false, false, false],

[true, false, false, false, true],

 [false, true, true, true, false]

  ];

function setup() {

  createCanvas(400, 400);

  stroke(250, 65, 161);

}

​

function draw() {

  drawGrid();

    var success = false;

  for (var r = 0; r < grid.length; r++)

    for (var c = 0; c < grid[r].length; c++)

      if (grid[r][c] === true)

        success = false;

  if (success === true){

    background(0);

    drawGrid();

    fill(245, 137, 193);

    textSize(80);

    textAlign(CENTER);

  text('you won!', 200, 220);

    }

}

function mousePressed() {

  let col = int(mouseX / 80);

  let row = int(mouseY / 80);

  flipLight(row,col);

   if(mouseX >= 400 || mouseY >= 400 || mouseX <=0 || mouseY <= 0)

    return;

  if(isValid(row - 1, col) === true){

    flipLight(row - 1, col);

  }

  if(isValid(row + 1, col) === true){

    flipLight(row + 1, col);

  }

  if(isValid(row, col - 1) === true){

    flipLight(row, col - 1);

  }

  if(isValid(row , col + 1) === true){

    flipLight(row, col + 1);

  }

}

function flipLight(r, c){

  grid[r][c] = !grid[r][c];

}

function isValid(r, c){

  if (r < 0 || r > 4)

    return false;

  if (c < 0 || c > 4)

    return false;

  return true;

}

function drawGrid(){

  for (var r = 0; r < grid.length; r++)

    for (var c = 0; c < grid[r].length; c++) {

      let x = c * 80;

      let y = r * 80;

      if (grid[r][c] === false) 

        fill(0);

      else 

        fill(245, 137, 193);

      rect(x, y, 80, 80);

    }

}