public void move() {
Grid<Actor> gr = getGrid();
if (gr == null) {
return;
}
if (getLocation().equals(targetLocation)) {
Location oldTargetLocation = targetLocation;
targetLocation = initialLocation;
initialLocation = oldTargetLocation;
return;
}
Location loc = getLocation();
Location nextLocation = calculateNextLocation(loc);
if (canMove(nextLocation)) {
setDirection(loc.getDirectionToward(nextLocation));
moveTo(nextLocation);
} else {
ArrayList<Location> availableLocations = gr.getEmptyAdjacentLocations(getLocation());
if (availableLocations.get(0) != null) // if not empty
{
int totalDifference = 0;
int leastDifference = 10;
Location leastDifferenceLocation = availableLocations.get(0);
for (int i = 0; i < availableLocations.size(); i++) {
totalDifference += Math.abs(availableLocations.get(i).getCol() - targetLocation.getCol());
totalDifference += Math.abs(availableLocations.get(i).getRow() - targetLocation.getRow());
if (totalDifference < leastDifference) {
leastDifference = totalDifference;
leastDifferenceLocation = availableLocations.get(i);
}
totalDifference = 0;
}
setDirection(loc.getDirectionToward(leastDifferenceLocation));
moveTo(leastDifferenceLocation);
}
}
}