int [] one = new int[6];
int [] two = new int[6];
int type=1,placeholder=0;
void setup()
{
  size(700,600);
  for(int i=0;i<6;i++)one[i]=0;
}

void draw()
{
  background(#FFFFFF);

  for(int i=0;i<5;i++)
  {
  if(one[i+1]==0)
  {
    placeholder=one[i];
    one[i]=0;
    one[i+1]=placeholder;
  }
  if(two[i+1]==0)
  {
    placeholder=two[i];
    two[i]=0;
    two[i+1]=placeholder;
  }
  }

  drawEllipses();
}

void mousePressed()
{
  if(mouseX>=1 && mouseX<=100 && one[0]==0)
  {
  one[0]=type;
  if(type==1)type=2;
  else type=1;
  }
  if(mouseX>=101 && mouseX<=200 && two[0]==0)
  {
  two[0]=type;
  if(type==1)type=2;
  else type=1;
  }
}



void drawEllipses()
{
  for(int i=1;i<7;i++)
  {
    if(one[i-1]==0)fill(0);
    if(one[i-1]==1)fill(255,0,0);
    if(one[i-1]==2)fill(0,0,255);
    ellipse(50,i*100-50,50,50);
  }
}