/**
* Get one component of the distance to the ScrollingActor.
*
* @param component You can choose which component you want. It has to be eighter 'x' or 'y'.
* @return The component of the distance between the both objects.
*/
public double getDistanceToScrollingActor(char component) throws IllegalArgumentException {
if (component == 'x') {
List<ScrollingActor> actors = getWorld().getObjects(ScrollingActor.class);
if (actors != null && !actors.isEmpty()) {
ScrollingActor actor = null;
for (ScrollingActor scrollingActor : actors) {
if (scrollingActor.isScrollingCenter()) {
actor = scrollingActor;
}
}
if (actor == null) {
System.err.println("No scrollingActor in the world.");
return 0;
}
return getExactX() - actor.getExactX();
}
} else if (component == 'y') {
List<ScrollingActor> actors = getWorld().getObjects(ScrollingActor.class);
if (actors != null && !actors.isEmpty()) {
ScrollingActor actor = null;
for (ScrollingActor scrollingActor : actors) {
if (scrollingActor.isScrollingCenter()) {
actor = scrollingActor;
}
}
if (actor == null) {
System.err.println("No scrollingActor in the world.");
return 0;
}
return getExactY() - actor.getExactY();
}
} else {
throw new IllegalArgumentException("component (" + component + ") must be either 'x' or 'y'");
}
return 0;
}
/**
* Get the distance to the ScrollingActor.
*
* @return The distance between this object and the ScrollingActor.
*/
public double getDistanceToScrollingActor() {
List<ScrollingActor> actors = getWorld().getObjects(ScrollingActor.class);
if (actors != null && !actors.isEmpty()) {
ScrollingActor actor = null;
for (ScrollingActor scrollingActor : actors) {
if (scrollingActor.isScrollingCenter()) {
actor = scrollingActor;
}
}
if (actor == null) {
System.err.println("No scrollingActor in the world.");
return 0;
}
return Math.hypot(getExactX() - actor.getExactX(), getExactY() - actor.getExactY());
}
return 0;
}
/**
* Get the location of the starting point (the world coordinates (0|0)).
*
* @return The starting point of the scrolling world.
*/
public java.awt.Point getStartingPoint() {
List<ScrollingActor> actors = getWorld().getObjects(ScrollingActor.class);
if (actors != null && !actors.isEmpty()) {
ScrollingActor actor = null;
for (ScrollingActor scrollingActor : actors) {
if (scrollingActor.isScrollingCenter()) {
actor = scrollingActor;
}
}
if (actor == null) {
System.err.println("No scrollingActor in the world.");
return null;
}
int x = actor.getX() + getWorld().getTotalXMovement();
int y = actor.getY() + getWorld().getTotalYMovement();
return new Point(x, y);
}
return null;
}