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I doubt that you posted the correct code or at least I am not sure how this is related to your question. Well, you could have something like this in your wolf class: <Code Omitted>

Put the 'if (life==0)' block at the end of the act method. Right now, when life reaches 0, the kogel is removed from the world. After that, you are trying to get an schip object at the position of the kogel, but the kogel is not in the world anymore, so it can't check for something at its coordinates.

You probably do not need an 'if' or a 'while'. You can just use something like this: <Code Omitted>

Switch lines 33 and 37. If you remove the actor (line 33), the 'getWorld' method (line 37) will not return the world, but 'null' (no World referenced).

You're right it works now. Thanks :3

Well, the first line is not within the method. This means it will execute only once, when the object is created. However, it will not yet be in any world and you should get a 'nullPointerException' when creating the actor. Now, as long as you ALWAYS have a Delo object in the world, and the 'getPosdelo' method is called from the 'act' method or a method called by the 'act' method, it should work as the first line within the 'getPosdelo' method.

Using 'ask' here might not be the most appropriate way to go about asking for a single character String input; but here we go. Since 'ask' returns a String object, there are two things that you should check for -- a length of one and whether the character is in the String "YyNn". As long as both are not satisfied, the question must be 'ask'ed again (using a while loop). You may even want to add "In

No -- just an separate object from the same class. My Value Display Tutorial shows how to make a Counter class, which your new class would be quite similar to; just that instead of an 'adjustValue' method, you may want to use a 'setValue' method.

Another way might be that you make all your instruction methods return a boolean value and place the following line at the end of each one: <Code Omitted>Then, your code would look like this: <Code Omitted>The semi-colon at the end of the while loop acts as an empty block of code to execute (no operations).

The method can not only be used for specific Actor objects, but also the World object; and it can also be used generically, where it does not matter what was clicked on, only that a click was detected. I often use it for specific Actor object where the code is placed in a World subclass. It is also used for cases where one wishes to detect when a mouse button was released (in situations where the pressing of the mouse is either unimportant or dealt with separately).

Asked and answered here.

Add an instance int field to the class to count down the act cycles it is to be frozen for. For each execution of the act method, if the value of the field is zero, then the actor is not frozen (act normally); if it is not zero, decrement its value. When it hits the object in question, set the value of the field to something around 50, or 60. This would look something like the following:

On this line: <Code Omitted>the single quotes around the three causes it to be treated as the character '3'. The character three has an int value of 51, which, obviously, is not 3. Remove the quotes from around the 3.

thank you very much!

This was just a try. I just want that the zombie dies not with one hit but with few hits depending on the damage the Bullet does. for example: Bullet does 5 damage and the zombie has 10 hitpoint so he dies with 2 hits.