// Number of ants in all 8 neighboring squares (excluding 'here')
protected int neighboringAnts(ZSquare excluded) {
int n = 0;
for (ZSquare s : neighbors) {
if (s != excluded) n += s.getNumberOfAnts();
}
return n;
}
// Neighboring square with food on it, if any (but only "far enough" from the nest)
protected ZSquare squareWithFood(ZSquare excluded1, ZSquare excluded2) {
for (ZSquare s : cells) {
if (!s.isNest() && !s.isNextToNest() && s != excluded1 && s != excluded2 && s.hasFood())
return s;
}
return null;
}
protected ZSquare bestSquareToAvoidConflict(ZSquare target) {
if (isAroundNest()) return null; // Don't avoid conflict when nearby own nest
double dist = 0;
ZSquare best = null;
for (ZSquare s : neighbors) {
if (s.isPassable() && s.getNumberOfAnts() == 0) {
double d = Constants.normalDistance(target.x - s.x, target.y - s.y);
if (d > dist) best = s;
}
}
if (best != null) assert best.isPassable();
return best;
}
/**
* On each turn, act will be called to allow your ant to take some action in the world.
*
* @param environment a description of the 9 squares around this ant (one in each direction + the
* one the ant is currently on)
* @param events A list of Strings describing actions that affected this ant in the last turn. In
* particular, if any ants said anything or fought with this ant, they will show up here
* @return an implementation of the Action class indicating what this ant should do
*/
public Action act(Environment environment, List<WorldEvent> events) {
// L long elapsedTimeMillis = System.currentTimeMillis(); // Logger.
Action act = null;
turn++;
here.update(environment);
if (role == null) {
assert id == 0;
assert turn == 1;
assert here.isNest();
id = here.scent.a + 1;
Scent s = new Scent();
s.a = id;
initializeState();
assert role != null;
return new Write(s.getValue());
}
northeast.update(environment);
east.update(environment);
southeast.update(environment);
south.update(environment);
southwest.update(environment);
west.update(environment);
northwest.update(environment);
north.update(environment);
if (here.scent.stinky) act = new Write(null); // Erase opponent's writing
if (act == null) act = role.act();
if (act == null) act = new Pass();
if (act instanceof Move) {
ZSquare s = square(act);
assert s.isPassable();
x += s.deltaX;
y += s.deltaY;
trail.add(this);
// L Logger.trace(this, "move " + s.dir.name());
} else if (act instanceof GetFood) {
assert !hasFood;
ZSquare s = square(act);
assert s.isPassable() && s.hasFood();
hasFood = true;
// L Logger.trace(this, String.format("takes food %s %d,%d", s.dir.name(), s.x, s.y));
} else if (act instanceof DropFood) {
assert hasFood;
ZSquare s = square(act);
assert s.isPassable();
hasFood = false;
// L Logger.trace(this, String.format("drops food %s %d,%d", s.dir.name(), s.x, s.y));
// L } else if (act instanceof Write) { // Logger.
// L Logger.trace(this, String.format("writes: %s", (new Scent(act)).toString()));
// L } else if (act instanceof Say) { // Logger.
// L Logger.trace(this, String.format("Says: '%s'", act.toString()));
// L } else if (act instanceof Pass) { // Logger.
// Do nothing
// L } else { // Logger.
// L Logger.trace(this, "check action " + Constants.className(act));
// L assert false; // Logger.
}
// L elapsedTimeMillis = System.currentTimeMillis() - elapsedTimeMillis; // Logger.
// L Logger.logRunTime(this, elapsedTimeMillis);
// L if (turn % 1000 == 0) Logger.dumpBoard(this);
return act;
}
protected boolean isNextToNest() {
return here.isNextToNest();
}
// Are we relatively close to the nest?
protected boolean isAroundNest() {
return here.isAroundNest();
}
protected ZSquare nest() {
assert here.isNest() || isNextToNest();
if (here.isNest()) return here;
return squareTo(Constants.BOARD_SIZE, Constants.BOARD_SIZE);
}
