ArrayList<Drop> drops = new ArrayList<Drop>();

void setup(){
   size(500,500); 
   noStroke();
}
float force ;
void mousePressed(){
  force = 1;
}

void draw(){
  background(128,128,255);
  if(mousePressed){
    if(force < 4) force += .1;
    for(int i = 0; i < force; i++){
          drops.add(new Drop());
    }
  } else {
   force = 0; 
  }

  
  ArrayList<Drop> toRemove = new ArrayList<Drop>();
   for(Drop d : drops){
     if(! d.move()){
        toRemove.add(d); 
     }
      d.draw(); 
      
      
   }
   drops.removeAll(toRemove);
//  new Drop().draw();
}



class Drop {
  float sz = random(2,10);
  float x,y,xs,ys;
  Drop(){
    x = 250;
    y = 500;
    float a = atan2(mouseY - y,mouseX - x);
    a+= random(-.1,.1);
    float d = dist(mouseX,mouseY,x,y)/random(45,55);
    xs = cos(a)*d;
    ys = sin(a)*d;
  }
   boolean move(){
     x += xs;
     y += ys;
     ys += .1;
     if(y > 550) return false;
     return true;
   }
  void draw(){
    float d = dist(x,y,250,500);
    float cd = map(d,0,500,-8,10);
    if(cd >= 0 && cd <=7){
       if(cd < 1) fill(143,0,255,64);
       
       else if(cd < 2) fill(75,0,140,64);
       
       else if(cd < 3)  fill(0,0,255,64);
      else if(cd < 4) fill(0,255,0,64);
     else if (cd < 5) fill(255,255,0,64);
     
    else if (cd < 6) fill (255,127,0,64);
    
   else if (cd < 7) fill(255,0,0,64);
   else fill(255,64);
      
    } else fill(255,64);
    
    
    
     ellipse(x,y,sz*random(.8,1.2),sz*random(.8,1.2));
  } 
   
   
  
}