dot[] d= new dot[4];

float left,top,scl;
boolean butDown;
boolean explode,twist;
void setup(){
  size(600,500);
  d[0]=new dot(15,37,75,color(180,0,0,55));
  d[1]=new dot(160,47,75,color(0,150,150,55));
  d[2]=new dot(160,186,55,color(0,0,120,55));
  d[3]=new dot(170,-42,45,color(180,180,0,55));
  for(int i=0;i<d.length;i++){
    d[i].randomise(random(100),random(100));
  }
  left=width/2;
  top=height/2;
  scl=0.5;
}

void draw(){
  fill(255,20);
  rect(0,0,width,height);
  noStroke();
  smooth();
  
  if(keyPressed){
    if(keyCode==UP){
      top+=10;
    }
    if(keyCode==DOWN){
      top-=10;
    }
    if(keyCode==LEFT){
      left-=10;
    }
    if(keyCode==RIGHT){
     left+=10;
    }
   //scale comm
   if(key=='w'){
     scl+=0.01;
   } 
   if(key=='s'){
     scl-=0.01;
   }
   //randomise
   if(key=='r'){
     explode=false;
     twist=false;
     if(butDown==false){
       butDown=false;
       for(int i=0;i<d.length;i++){
         d[i].randomise(random(100),random(100));
       }
     }
   }
   if(key=='e'){
     explode=true;
   }
   if(key=='t'){
     twist=true;
   }
  } else {
     butDown=false;
  }
  if(explode==true){
      for(int t=0;t<d.length;t++){
        d[t].di+=3;
      }
  }
  if(twist==true){
      for(int t=0;t<d.length;t++){
        d[t].a+=0.01;
      }
  }
  translate(left,top);
  line(-10,0,10,0);
  line(0,-10,0,10);
  scale(scl);
  for(int t=0;t<d.length;t++){
    pushMatrix();
    //resetMatrix();
    //translate(left,top);
    
    println(t);
    d[t].draw(d[t]);
    popMatrix();
  }
}


class dot{
  float r,a,di;
  color col;
  
  dot(float ir, float ia, float id,color iC){
    r=ir; a=ia; di=id; col=iC;
  }
  
  dot copy(){
    return new dot(r,a,di,col);
  }
  
  void randomise(float iR,float iD){
    r=20+random(iR);
    a=random(360);
    di=random(iD);
  }
  
  void draw(dot D){
    
    rotate(radians(D.a));
    translate(0,D.di);
    fill(col);
    ellipse(0,0,D.r,D.r);
    
    dot myDot=D.copy();
    
    myDot.r*=0.66;
    
    if(myDot.r>10){
      for(int t=0;t<d.length;t++){
          //pushMatrix();
          d[t].draw(myDot);
          //popMatrix();
        }
      //d[0].draw(myDot);
    }
    //rotate(radians(-D.a));
    translate(0,-D.di);
  }
}