@Override
public void run() {
running = true;
messages.write("Defend your home planet!", 500);
messages.write("Press O and D to set research focus.", 600);
while (true) {
if (!running) {
setChanged();
notifyObservers();
try {
Thread.sleep(DELAY);
} catch (InterruptedException e) {
System.out.println("Interrupted.");
return;
}
continue;
}
synchronized (this) {
research.step();
/* Shoot the weapon. */
if (firing) {
long now = System.currentTimeMillis();
long diff = now - lastFire;
if (diff >= weapon.getSpeed()) {
shots.add(weapon.fire(fireX, fireY));
lastFire = now;
}
}
/* Spawn meteoroids. */
danger += difficulty;
double spawn = danger;
while (spawn > 0) {
if (RNG.nextFloat() < danger) {
double d = SIDE / 2d * Math.sqrt(2);
double a = RNG.nextDouble() * Math.PI * 2;
double x = Math.cos(a) * d;
double y = Math.sin(a) * d;
meteoroids.add(new Meteoroid(x, y));
}
spawn -= 1d;
}
/* Step debris forward. */
Set<Debris> old = new HashSet<Debris>();
for (Debris d : debris) {
d.step();
if (d.getTTL() <= 0f) {
old.add(d);
}
}
debris.removeAll(old);
/* Step meteoroids forward. */
Set<Meteoroid> dead = new HashSet<Meteoroid>();
for (Meteoroid m : meteoroids) {
if (m.step(home)) {
dead.add(m);
home.absorb(m);
m.setAlive(false);
}
}
/* Step weapon shots forward. */
Set<Shot> spent = new HashSet<Shot>();
for (Shot s : shots) {
Meteoroid m = s.step(this);
if (m != null && !dead.contains(m)) {
dead.add(m);
m.setAlive(false);
s.setAlive(false);
debris.addAll(m.breakup());
score += m.getSize();
} else if (s.getDistance() > SIDE) {
spent.add(s);
}
}
shots.removeAll(spent);
meteoroids.removeAll(dead);
/* Manage incoming and outgoing objects. */
while (outgoing.peek() != null) {
SpaceObject o = outgoing.poll();
if (o instanceof Shot) {
shots.remove((Shot) o);
} else if (o instanceof Meteoroid) {
meteoroids.remove((Meteoroid) o);
} else if (o instanceof Debris) {
debris.remove((Debris) o);
}
}
while (incoming.peek() != null) {
SpaceObject o = incoming.poll();
if (o instanceof Shot) {
shots.add((Shot) o);
} else if (o instanceof Meteoroid) {
meteoroids.add((Meteoroid) o);
} else if (o instanceof Debris) {
debris.add((Debris) o);
}
}
/* Check game over status. */
if (home.getHealth() <= 0) {
System.out.println("Game over");
running = false;
meteoroids.clear();
shots.clear();
debris.clear();
}
}
setChanged();
notifyObservers();
try {
Thread.sleep(DELAY);
} catch (InterruptedException e) {
System.out.println("Interrupted.");
return;
}
}
}
