public void update() {
// Removes the particles if they their lifespan is over in the level
time++;
if (time > 9000) time = 0;
if (time > life) remove();
za -= 0.1;
// Bouncing
if (zz < 0) {
zz = 0;
za *= -0.55;
xa *= 0.4;
ya *= 0.4;
}
// xx is our x but in a double value so we sum xa to simulate some physics, the same goes with
// yy but we also
// sum zz and za to simulate bouncing and gravity
move(xx + xa, yy + ya + zz + za);
}