// Learning Processing
  // Daniel Shiffman
  // http://www.learningprocessing.com
  
  // Example 10-7: Drops one at a time
  
  // An array of drops
  Drop[] drops = new Drop[1000];
  
   // New variable to keep track of total number of drops we want to use!
  int totalDrops = 0;
  
  void setup() {
    size(400,400);
    smooth();
    background(0);
  }
  
  void draw() {
    background(255);
  
    // Initialize one drop
    drops[totalDrops] = new Drop();
  
    // Increment totalDrops
    totalDrops++ ;
  
    // If we hit the end of the array
    if (totalDrops >= drops.length) {
      totalDrops = 0; //Start over
    }
  
    // Move and display drops
    for (int i = 0; i < totalDrops; i++ ) { // New! We no longer move and display all drops, but rather only the “totalDrops” that are currently present in the game.
      drops[i].move();
      drops[i].display();
    }
  
  }