The code below does what I want, however when I remove "noLoop()" I would like the starting position to be in the same spot. With noLoop() removed, it jumps all over the place. What can be done?

Thanks

2. int y;
3. int startY;
4. 
   
5. void setup() {
6.   size(600,600);
7.   background(0);
8.   stroke(#FFDE15);
9.   fill(#FFDE15);
10.   noLoop();
11. 
    
12.   startY = height/2;
13.   smooth();
14. }
15. 
    
16. void draw() {
17.   background(0);
18.   //println(mapY);
19.   for (int x = 0; x < width; x++) {
20.     point(x,startY);
21.     point(x, startY+y*6);
22.     randomwalk();
23.     
24.   }
25.   //saveFrame("line-######.png");
26.   //println(y);
27. }
28. 
    
29. void randomwalk() {
30.   int choice = int(random(2));
31. 
    
32.   if (choice == 0) {
33.     y++;
34.   } 
35.   else {
36.     y--;
37.   }
38.   //println(choice);
39. }
40.