Summer Candies - OpenProcessing

mySketch
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let vecLocation = [];
let vecVelocity = [];
const NUM = 50;
​
function setup() {
  createCanvas(windowWidth, windowHeight);
  frameRate(10);
  background(250);
  for(let i = 0; i<NUM; i++){
  vecLocation[i] = createVector(width/2,height/2);
  vecVelocity[i] = createVector(random(-10,10),random(-10,10));
  }
}
​
function draw() {
  noStroke();
  for(let i = 0; i<NUM; i++){
    let diameter = random(vecLocation[i].y/8.0);
    ellipse(vecLocation[i].x,vecLocation[i].y,diameter,diameter);
    fill(random(200,255),random(50,220),random(100,255));
​
    vecLocation[i].add(vecVelocity[i])
  
    if(vecLocation[i].x > width || vecLocation[i].x < 0){
     vecVelocity[i].x = vecVelocity[i].x * -1;
    }
    if(vecLocation[i].y > height||vecLocation[i].y < 0){
    vecVelocity[i].y = vecVelocity[i].y * -1;
    }
  }
}