private void onGameStatePlaying() {
// ball
Point position = ball.getPosition();
if (shadowCount >= SHADOW_SKIP) {
if (previousBallPositions.size() >= NUMBER_OF_BALL_SHADOWS) {
previousBallPositions.removeLast();
}
previousBallPositions.addFirst(new Point(position));
shadowCount = 0;
} else {
shadowCount += 1;
}
position.add((ballSpeed * ballUnitVector.getX()), -(ballSpeed * ballUnitVector.getY()));
ball.setPosition(position);
ball.setVisible(true);
for (int i = 0; i < NUMBER_OF_BALL_SHADOWS; i++) {
VisualControl visualControl = ballShadows.get(i);
if (previousBallPositions.size() > i) {
visualControl.setPosition(previousBallPositions.get(i));
visualControl.setVisible(true);
} else {
visualControl.setVisible(false);
}
}
// bounce
if (bouncedControl != null) {
if (!bouncedControl.isHit(ball.getPosition())) {
bouncedControl = null;
}
} else {
for (BounceableControl bounceableControl : paddles.values()) {
bounceableControls.add(bounceableControl);
}
for (BounceableControl bounceableControl : bounceableControls) {
if (bounceBall(bounceableControl)) {
bouncedControl = bounceableControl;
break;
}
}
for (BounceableControl bounceableControl : paddles.values()) {
bounceableControls.remove(bounceableControl);
}
}
// goal
if ((position.getX() <= 0.0f) || (position.getX() >= (float) displayMode.getWidth())) {
gameState = GameState.End;
}
}
private boolean bounceBall(BounceableControl control) {
/*
log.debug("Cheking...");
log.debug("\tcontrol: "+control.getPosition().toString()+", ball: "+ball.getPosition().toString());
log.debug("\tvector: x="+ballUnitVector.getX()+", y="+ballUnitVector.getY());
*/
boolean isHit = false;
if ((control.isVisible()) && (control.isHit(ball.getPosition()))) {
log.debug("bounced!!!!!!!!!!!!!!");
float angleDelta = 90.0f - control.getRotation();
// get current angle of ball vector
Point previousBallPosition = new Point(0.0f, 0.0f);
Point currentBallPosition = new Point(ballUnitVector.getX(), ballUnitVector.getY());
// float ballVectorMagnitude = PointUtility.getDistance(previousBallPosition,
// currentBallPosition);
float currentBallAngle = PointUtility.getAngle(previousBallPosition, currentBallPosition);
log.debug("\t\tcurrentBallAngle=" + currentBallAngle);
// get new vector
float targetBallAngle = (currentBallAngle + angleDelta);
float newX = (float) Math.cos(Math.toRadians(targetBallAngle));
float newY = (float) Math.sin(Math.toRadians(targetBallAngle));
log.debug("\t\tnew vector: x=" + newX + ", y=" + newY);
newX = (-1 * newX);
// back to original angle
previousBallPosition.set(0.0f, 0.0f);
currentBallPosition.set(newX, newY);
log.debug("\t\tnewX=" + newX + ", newY=" + newY);
float newAngle = PointUtility.getAngle(previousBallPosition, currentBallPosition);
targetBallAngle = (newAngle - angleDelta);
log.debug("\t\tnew angle=" + newAngle + ", targetBallAngle=" + targetBallAngle);
newX = (float) Math.cos(Math.toRadians(targetBallAngle));
newY = (float) Math.sin(Math.toRadians(targetBallAngle));
ballUnitVector.set(newX, newY);
ballUnitVector = ballUnitVector.normalise(null);
log.debug("\t\tfinal: x=" + ballUnitVector.getX() + ", y=" + ballUnitVector.getY());
isHit = true;
}
return isHit;
}
