Game Of Life - OpenProcessing

mySketch
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let cellSize = 10;
let n = 80;
let m = 80;
var game;
​
function setup() {
    createCanvas(800, 800);
    background(100);
    game = new  Game(n,m);
  
  //print("done setup");
 // print(game.getCell(2,3))
 // game.setCell(2,3,37);
//  print(game.getCell(2,3))
  
}
​
function draw() {
    print("looop");
    game.update();
    game.draw();
  
  
  
 
}
​
function Game(n,m){
  
  var a = []  
    
    for(var i=0; i<n*m;i++){
        let i = floor(random(2));
      
        a.push(i);
    }
    
  this.state = a  ;
  this.tempState = a.slice(0);
  
    this.setCell = function(i,j,value){
      this.tempState[i*n + j] = value
    }
    
    this.getCell = function(i,j) {
     
        i = (i+n)%n
       
        j = (j+m)%m
        
        return this.state[i*n + j];
    }
  
    this.update = function() {
      print("update")
      for(var i=0; i<n;i++){
            for(var j=0; j<m;j++){
                let t = this.getCell(i,j+1) +
                    this.getCell(i-1,j+1) +
                    this.getCell(i+1,j+1) +
                    this.getCell(i,j-1) +
                    this.getCell(i+1,j-1) +
                    this.getCell(i-1,j-1) +
                    this.getCell(i+1,j) +
                    this.getCell(i-1,j);
              //print("t=" + t + "ij = " + i + "," + j)
                if(this.getCell(i,j)==0){
                    if(t==3){
                      //print("change")
                          this.setCell(i,j,1)
                    }
                }
                else if (t>3 || t<2 ){
                  //print("change")
                    this.setCell(i,j,0)
                }
            }
        }
      this.state = this.tempState.slice(0);
    }
    
    this.draw = function() {
      print("draw")
      for(var i=0; i<n;i++){
            for(var j=0; j<m;j++){
                if(this.getCell(i,j)==0){
                    fill(0);
                }
                else {
                    fill(255);
                }
                rect(i*cellSize,j*cellSize,cellSize,cellSize);
            }
        }
    }
  
}