code

function Creature(x,y,dna){
  this.x=x;
  this.y=y;

  if(dna!=null){
    this.dna = dna;
  } else {
    this.dna = generateDNA();
  }

  this.update() = function(){
    this.i=0;
    while(i<this.dna.length){
      switch(this.dna[i]){
        case 1:
          this.move(this.dna[i+1]);
          i+=2;
        default:
          break;
      }
    }
  }

  this.move = function(cell){
    switch(cell){
      case 1:
        this.y--;
        break;
      case 2:
        this.y--;
        this.x++;
        break;
      case 3:
        this.x++;
        break;
      case 4:
        this.y++;
        this.x++;
        break;
      case 5:
        this.y++;
        break;
      case 6:
        this.y++;
        this.x--;
        break;
      case 7:
        this.x--;
        break;
      case 8:
        this.y--;
        this.x--;
        break;
      case 9:
        this.move(random(0,8));
        break;
    }
  }
}