Discussions

The 'wait' methods of the Object class are thread operations which are not intended to be used with greenfoot. Greenfoot provides the act method, which can be used to control when an object does anything (which is the same as when it is not to do something, or anything)..

Not sure why pacman ends in a wall, but the error message happens in the Level class, so you have to show this class.

I think danpost referred to the code you used above for the different sizes where you had: <Code Omitted>Do you have the same for the crusts? <Code Omitted>

Sounds like you could use something like a bar type object (similar to a health bar in appearance). Only, this bar will either increase or decrease with time and the ability will be reusable when the time has expired. You can check out my Value Display Tutorial scenario to see how to create a bar object (or other type object that can display your timer). If you cannot access it, you can also find the tutorial here. I do have a Bar support class that you could use. It is

Is there a clearLineOfSight method in your LineOfSight class?

If some condition, get random x and y within world bounds and set actor at new coordinates. Basically, in the class of the actor that is to disappear and appear elsewhere: <Code Omitted>

Nothing, you only need to add a Timer object into the world. Well, you need Greenfoot version 3.1.0 or you need to import the java.awt Color and Font classes.

In the bird class, cut lines 14 and 15 and paste them at line 28.

This doesn't really matter. You made a addScore method (you posted it above). If you just want to add one score point every act cycle, you can call the addScore method from the Counter's act method. If not, you need to access the counter object and call the addScore method on that object whenever you want to add points.

The method name is 'mouseClicked' (with a uppercase 'C'); and the documentation says it requires a parameter -- an instance of some Object type (typically a World or Actor object, or 'null', where any click will return a 'true' value): <Code Omitted> You could even have references to, let us say, Button objects in your World subclass: <Code Omitted>and have the act method in that same world c

wow thank you very much master :*

oh thanks

I can try to use it. add the mask, remove the actors, and add them back where they were.

ty ill check ;)