private void handleExplode() {
if (ballBounds.getMinY() > areaBounds.getMaxY()) {
isExploding = false;
resetBall();
} else {
ball.setTranslateX(ball.getTranslateX() + dx);
ball.setTranslateY(ball.getTranslateY() - dy);
}
}
private void advanceBall() {
double refAngle = 0;
boolean doBounce = false;
double jitter = 0;
if (ballBounds.getMaxY() >= rectBounds.getMinY()) {
if (ballBounds.getMaxX() < rectBounds.getMinX()
|| ballBounds.getMinX() > rectBounds.getMaxX()) {
isExploding = true;
ball.setFill(Color.RED);
} else {
// calculate a value between -0.5 and 0.5 which corresponds to the
// position within the platform where the ball bounces
double pos = (ball.getTranslateX() - rect.getTranslateX()) / rect.getWidth();
if (pos < 0) {
pos = 0;
}
if (pos > 1) {
pos = 1;
}
pos = pos - 0.5;
// system.err.printf("%s\n", pos);
jitter = pos;
doBounce = true;
}
}
if (ballBounds.getMinY() <= areaBounds.getMinY()
|| ballBounds.getMaxY() >= areaBounds.getMaxY()) { // this must never happen!
doBounce = true;
} else if (ballBounds.getMinX() <= areaBounds.getMinX()
|| ballBounds.getMaxX() >= areaBounds.getMaxX()) {
doBounce = true;
refAngle = Math.PI / 2;
}
if (doBounce) {
ballAngle = calculateExitAngle(ballAngle, refAngle) + jitter;
dx = ballSpeed * Math.cos(ballAngle);
dy = ballSpeed * Math.sin(ballAngle);
}
ball.setTranslateX(ball.getTranslateX() + dx);
ball.setTranslateY(ball.getTranslateY() - dy);
}