I'm sorry for the same posts... how to delete this theard?

Just use this method: public void pointAtObject(Actor o) { setRotation((int)(180*Math.atan2(o.getY()-getY(),o.getX()-getX())/Math.PI)); } Actor o ist the object you want your object point at.

I'm sorry, but i can't use it as a public void act How do I have to write it? I do it this way: pointAtObject(Man.class);

If you want your object to point towards the Man you may have multiple Man instances so you need to know which one you want to point to. Method 1) If you want to point to the man that you are colliding with then use Method 2) Extension of the first method, will continue to point at the man last collided with. Method 3) Just point at the first Man added to the world You'll also need somewhere in your actor 1NS4NE's method pointAtObject(Actor o); I wrote all these in the browser so I don't know if they will work or not, but give them a go.

The first 2 methods work fine, but the third doesn't. and what does the word "coll" mean? It seems like it would be to hard for me make my game idea come true. Maybe this way it's easier: I want that a "Zombie" follows a "Man", but the "Zombie" does it only when the man is in a specific range. Kind of like in a tower defense game.

first add this line at top of your code: import java.util.List; than add this to your act-method: public void act(){ List man = getObjectsInRange( ,Man.class); if(man.size()!=0) pointAtObject(man.get(0)); } if you wanna let your zombies just move if the Man.class is in range, you need to replace "if(man.size()!=0) pointAtObject(man.get(0));" by "if(man.size()!=0){ pointAtObject(man.get(0)); }"

My editor looks like this: import java.util.List; public class zombie extends Mover { public void pointAtObject(Actor c) { setRotation((int)(180*Math.atan2(c.getY()-getY(),c.getX()-getX())/Math.PI)); } public void act() { List man = getObjectsInRange( 10 ,Man.class); if(man.size()!=0) { pointAtObject(man.get(0)); <---- The programm says here is a mistake: pointAtObject(greenfoot.actor) in zombie cannot be applied to (java.lang.Object) move(); } } }

The reason for the error is because List is generic class because it can be a list of any type of object. In order to tell it you want it to be a list of Man declare the list using That should solve your problem. If you want more depth on generics Google java generics tutorial. However with regards to lists (the most common use of generics) just remember to put the class the list is of in those triangle brackets after list. so for a list of actors List<Actor> listOfActors; For an ArrayList (another type of list) you can contruct an arrayList object so you have to add the class to the constructor aswell like so Hope that helps :)

Now it works perfectly!!! Thank you!!! For me it seems like kind of magic. I don't understand what this "language" is saying, I'm only able to use the very basics.

Just one little thing: The method pointAtObject could be implemented simplier: There's a method turnTowards(int x, int y) implemented in the Actor class, which does the calculation of the angle for us. Cheers! Hanspeter

Deleting is very difficult, it takes a lot of time from admins and mods

MAGIC IS NOT REAL