@Override
public boolean execute() {
// get a set of several nearest allied planets
List<Planet> sources =
bot().getNearestInRadius(_target, bot()._adj.neighbors(_target), Race.ALLY, ATTACK_RADIUS);
if (sources.isEmpty()) return false;
bot()._game.clearAllData();
int totalShips = 0;
int furthestSource = 0;
int shipsAvail;
for (Planet src : sources) {
shipsAvail = bot().shipsAvailableSafe(src, Race.ALLY);
if (shipsAvail == 0) continue;
if (src.distance(_target) > furthestSource) furthestSource = src.distance(_target);
src.setData(shipsAvail);
totalShips += shipsAvail;
}
Planet future = bot()._sim.simulate(_target, furthestSource + 1);
int shipsNeeded = future.ships() + _extraShips;
if (totalShips >= shipsNeeded || !_safe) {
int shipsSent = 0;
int fromSources = 0;
double error = 0.0;
for (Planet src : sources) {
if (src.data() == null) continue;
shipsAvail = (Integer) src.data();
double frac = (double) shipsNeeded * (double) shipsAvail / (double) totalShips;
int num = (int) Math.floor(frac);
error += frac - (double) num;
if (error > 0.9999) {
error -= 0.9999;
num++;
}
assert (num <= src.ships()) : "calc correctness " + num + " <> " + src.ships();
if (num == 0) // don't bother
continue;
shipsSent += num;
fromSources++;
issueOrder(src, _target, num);
src.addShips(-num);
}
assert (shipsSent == shipsNeeded)
: "correct number of ships: " + shipsSent + " <> " + shipsNeeded + ", " + error;
log(
"# "
+ _target
+ " attacked with "
+ shipsSent
+ " ships from "
+ fromSources
+ " sources");
log("# future " + future + " was predicted");
} else return false;
return true;
}
