void setup() {
size(300, 300);
noStroke();
ellipseMode(CENTER_DIAMETER);
//framerate(15);

}

float x1= 0, x2= 0, z1= 0, i= 0, sgn1= 1, sgn2= 1.5, sgn3= 0, s;


void loop() {
background(100);





push();
translate(x1, 185, z1);
noStroke();
fill(40, 100);
rotateX(PI/2);
ellipse(0, 22, -5*abs(sin(i))+32, -5*abs(sin(i))+32);
pop();


s= 15*abs(sin(i+PI/80))+5;
if(s<5.6){
sgn3= random(-2, 2);
}

push();
translate(0, 0, z1);
fill(190, 0, 100);
stroke(0);
ellipse(x1, -80*abs(sin(i))+180, 40, 2*s);
pop();


push();
translate(x2, 250);
rotateY(0.5*sin(10*i));
fill(255);
stroke(0);
box(40);
pop();



if(x1>280) {
x1= 280;
sgn1*= -1;
}
else {
if(x1<20){
x1*= 20;
sgn1*=-1;
}
else{
x1+= sgn1;
}
}

if(x2>280) {
x2= 280;
sgn2*= -1;
}
else {
if(x2<20){
x2= 20;
sgn2*=-1;
}
else{
x2+= sgn2;
}
}

if(z1>0) {
z1= 0;
sgn3*= -1;
}
else {
if(z1<-250){
z1= -250;
sgn3*=-1;
}
else{
z1+= sgn3;
}
}

i+=PI/(width/8);

}