/**
* Method: makeMove() Usage: last step in act() of Critter
* ------------------------------------------- Follower faces the same way target is and steps are
* incremented, if target is null, it faces the direction it just moved in then calls Critters
* makeMove to go to the new location @Postcondition: (1) <code>getLocation() == loc</code>. (2)
* The state of all actors other than those at the old and new locations is unchanged.
*
* @param loc the location to move to
*/
public void makeMove(Location loc) {
if (target != null) {
setDirection(target.getDirection());
steps++;
} else setDirection(getLocation().getDirectionToward(loc));
super.makeMove(loc);
}
/**
* Method: getMoveLocations() Usage: 3rd step in act() of Critter ---------------------------- if
* Follower has a target, Follower moves to the location opposite to the target's direction if
* target is null, Follower roams like a generic Critter until a target is found @Postcondition:
* The state of all actors is unchanged.
*
* @return a list of possible locations for the next move
*/
public ArrayList<Location> getMoveLocations() {
ArrayList<Location> nextLoc = new ArrayList<Location>();
if (target != null) {
Location next =
target.getLocation().getAdjacentLocation(target.getDirection() + Location.HALF_CIRCLE);
if (getGrid().isValid(next)) nextLoc.add(next);
} else {
for (Location l : super.getMoveLocations()) // for every empty adjacent loc
if (getGrid().isValid(l)) // if it's also valid
nextLoc.add(l); // add it to list of possible locs
}
return nextLoc;
}
