public Universe next() {
List<Fleet> futureFleets = new ArrayList<Fleet>();
List<Planet> newPlanets = new ArrayList<Planet>();
for (Planet planet : planets.items) {
newPlanets.add(planet.grow());
}
List<Fleet> arrivingFleets = new ArrayList<Fleet>();
for (Fleet fleet : fleets.items) {
Fleet movedFleet = fleet.move();
if (movedFleet.turnsRemaining > 0) {
futureFleets.add(movedFleet);
} else {
arrivingFleets.add(movedFleet);
}
}
Fleets arriving = new Fleets(arrivingFleets);
for (Fleet fleet : arrivingFleets) {
Planet planet = new Planets(newPlanets).find(fleet.destinationPlanet);
Fleets attacking = arriving.attacking(planet);
if (attacking.enemyFleets().ships() != attacking.myFleets().ships()) {
newPlanets.remove(planet);
planet = planet.receive(fleet);
newPlanets.add(planet);
}
}
return new Universe(new Planets(newPlanets), new Fleets(futureFleets), turn + 1, reservations);
}
public Universe(Planets planets, Fleets fleets, int turn, Reservations reservations) {
this.turn = turn;
Fleets sentThisTurn = new Fleets();
for (Reservation reservation : reservations.items) {
if (turn == reservation.turn) {
Planet planet = planets.find(reservation.attack.homePlanet.id);
if (planet.isMine() && planet.numShips >= reservation.attack.ships) {
sentThisTurn = sentThisTurn.plus(new Fleet(reservation.attack));
planets = planets.remove(planet);
planet = planet.removeShips(reservation.attack.ships);
planets = planets.union(planet);
}
}
}
this.planets = planets;
this.fleets = fleets.plus(sentThisTurn);
this.reservations = reservations;
}
Universe haveEveryPlanetAttack(Planet mine, Planets planetsToAttack) {
List<Planet> newPlanets = new ArrayList<Planet>();
List<Fleet> additionalFleets = new ArrayList<Fleet>();
for (Planet p : planetsToAttack.minus(mine).items) {
if (!p.isNeutral()) {
newPlanets.add(p.removeShips(p.numShips));
additionalFleets.add(p.attack(mine));
}
}
return new Universe(
planets.replace(new Planets(newPlanets)),
fleets.union(new Fleets(additionalFleets)),
turn,
reservations);
}
