private void update() {
if (renderer.shouldRestart()) {
restart();
renderer.setSpeedX(0.0);
renderer.setSpeedY(0.0);
renderer.setMagnusForce(0.0);
renderer.refreshInformationPanel();
renderer.resetRestartFlag();
renderer.stop();
}
if (renderer.shouldClearTrajectories()) {
clearTrajectories();
renderer.resetClearTrajectoriesFlag();
}
if (renderer.hasStarted()) {
if (!gameOver) {
synchronized (ballLock) {
Vector gravitationalForce = new Vector(0.0, -9.81 * ball.getMass());
Vector frictionForce = Vector.product(-dragCoefficient, ball.getSpeed());
Vector magnusForceTmp =
Vector.product(MAGNUS_COEFFICIENT * ball.getFrequency(), ball.getSpeed());
Vector magnusForce = new Vector(-magnusForceTmp.y, magnusForceTmp.x);
renderer.setSpeedX(ball.getSpeed().x);
renderer.setSpeedY(ball.getSpeed().y);
renderer.setMagnusForce(magnusForce.length());
renderer.refreshInformationPanel();
ball.applyForce(Vector.sum(Vector.sum(gravitationalForce, frictionForce), magnusForce));
ball.update();
if (ball.getPosition().x <= 0.0) {
gameOver = true;
}
double dy = ball.getPosition().y - ball.getSize().y / 2 - GROUND_Y;
if (dy <= 0.0) {
double t = dy / ball.getSpeed().y;
double dx = t * ball.getSpeed().x;
Point newPosition = ball.getPosition();
newPosition.x -= dx;
newPosition.y -= dy;
ball.setPosition(newPosition);
gameOver = true;
}
currentTrajectory.addPoint(ball.getPosition());
renderer.getTrajectoriesTableModel().refreshCell(trajectories.size() - 1, 1);
renderer.getTrajectoriesTableModel().refreshCell(trajectories.size() - 1, 2);
}
}
} else {
double initialSpeedX = renderer.getInitialSpeed() * Math.cos(renderer.getInitialDirection());
double initialSpeedY = renderer.getInitialSpeed() * Math.sin(renderer.getInitialDirection());
dragCoefficient = renderer.getDragCoefficient();
synchronized (ballLock) {
ball.setSpeed(new Vector(initialSpeedX, initialSpeedY));
ball.setFrequency(renderer.getFrequency());
}
}
}
