Introducing positionX 2 - OpenProcessing

sketch_7
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int diameter = 10;
int positionX = 50;
int switchX = 0;
​
void setup() {
  size(400, 400);
}
​
void draw() {
  background(227, 209, 185);
  noStroke();
​
  if (positionX == width-diameter/2) {
    switchX = 1;
  }
​
  if (positionX == diameter/2) {
    switchX = 0;
  }
​
  if (switchX == 0) {
    positionX = positionX + 5;
​
  }
  else if (switchX == 1) {
    positionX--;
  }
​
  fill(165, 106, 115);
  ellipse(positionX, positionX, diameter, diameter);
}
​
​
​