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int posX= 5;
int speedX = 10;
int posY = 10;
int speedY = 5;
void setup () {
size (500,500);
}
void draw () {
background (0,150,150);
noStroke();
posX = posX + speedX;
posY = posY + speedY;
println (posY);
if (posX >= width || posX <=0) {
speedX *= -1;
}
if (posY >= height || posY <=0) {
speedY *= -1;
}
fill (255,255,255);
ellipse(posY, posX, 20,20);
fill (0,0,0);
ellipse(posX, posY, 20,20);
}