private void forgetZombiesFromLastTurn() {
zombieMemory.clear();
}
private boolean sawZombieLastTurn(RobotInfo zombie) {
return zombieMemory.contains(zombie.ID);
}
private void rememberZombiesFromThisTurn() {
for (RobotInfo zombie : nearbyZombies) {
zombieMemory.add(zombie.ID);
}
}