private Locality getNearestLocality(Position position) {
if (!position.isOnPath()) return (Locality) position.getLocation();
// return position.getDestination();
if (position.getProgress() > 0.5) {
return position.getDestination();
} else {
return position.getStart();
}
}
private void approach(Position subjectPosition, Position targetPosition) {
// if (subject.isMoving()) return; //can't work with that precondition yet
// double divisor = 1.0;
/*//if (target.isMoving()) return; //Simply avoid cycles
if (target.isMoving() && targetPosition.getDestination() == subjectPosition.getLocation()) {
divisor = 2.0;
return; //Since the target is coming towards us all we have to do is wait.
}
else if (target.isMoving()) {
move(targetPosition.getDestination());
return;
} else if (target.isMoving()) {
subject.stop();
return;
}*/
// The cases that are to be distinguished: target is moving towards us, target is moving away
// from us, target stays
// These can be distinguished in case the following precondition applies: target is max 1
// locality away
Locality dest = localityInDirectionOf(subjectPosition, targetPosition);
double timeDistance = targetPosition.getDistance(subjectPosition);
if (!target.isMoving()) { // First case - target is staying
// reaction go to target and stay when on height of target
if (move(dest)
&& targetPosition.isOnPath()) { // Only in case target is on path the timer is required
timedAttack(timeDistance);
}
return;
} else if (targetPosition.getDestination()
== dest) { // Second case - target is going away from us
// reaction just move to the same location as target
move(dest);
} else { // Third case: Target is coming towards us
timeDistance = timeDistance / 2.0;
move(dest); // Instead of dividing timeDistance by 2.0 it can be left unmodified in case
// move(dest) remains unused
timedAttack(timeDistance);
}
/*if (targetPosition.getDestination() != subjectPosition.getLocation()) {
dest = targetPosition.getDestination();
}*/
// if (!move(dest)) return;
}
private void trimPath(Position s, Position t, List<Locality> path) {
if (!s.isOnPath() && path.size() > 0 && s.getLocation() == path.get(0)) path.remove(0);
else if (s.isOnPath()
&& (path.size() == 1
|| (path.size() > 1
&& (s.getDestination() == path.get(1) || s.getStart() == path.get(1)))))
path.remove(0);
if (t.isOnPath()
&& (path.size() == 1
|| (path.size() > 1
&& (path.get(path.size() - 2) == t.getStart()
|| path.get(path.size() - 2) == t.getDestination()))))
path.remove(path.size() - 1);
}
private boolean inRange(Position s, Position t) {
return s.getDistance(t) <= 10.0;
}
private void followPath(Position spos, List<Locality> path) {
if (!spos.isOnPath() || !subject.isMoving() || path.get(0) != spos.getDestination()) {
move(path.get(0));
}
}
private Locality localityInDirectionOf(Position from, Position to) {
if (!to.isOnPath()) return (Locality) to.getLocation();
if (!from.isOnPath()) {
if (from.getLocation() == to.getDestination()) return to.getStart();
else return to.getDestination();
}
if (from.getDestination() != to.getDestination()) {
to =
new Position(
(Path) to.getLocation(), to.getDestination(), to.getStart(), 1.0 - to.getProgress());
}
if (from.getDestination() != to.getDestination() || from.getStart() != to.getStart()) {
return to.getDestination();
}
if (to.getProgress() >= from.getProgress()) return to.getDestination();
return to.getStart();
}