Discussions

With what exactly do you need help?

Ok. You should read over the documentation for both the World and Actor classes in the API reference. You will see that they both have an "act" method. (Furthermore, you can put an "act" method in any class, though it will not have any special significance to Greenfoot unless it's in a World or Actor subclass).

It looks like you are creating a healthbar for the laser, which is not the same healthbar that you have in your Ship class. Remove line 12 and change line 50 to: <Code Omitted>You should, however, refrain from using the same name of a class as a variable name. That is, you should use something like 'Actor ship;' instead of 'Actor Ship;'. I noticed that your 'life' field starts at zero and is decreased from there. It will never be checked and found to be zero (see lines 21 through 25) . Also after that (line 26),, you are using a method that requires the actor

The 'checkHit' method now returns a boolean. So if the Laser objects touches a SpaceFly, it will return true. Then, or if it is at an edge of the world (only top or bottom as it is right now), it will be removed from the world.

Yes -- since 'UrRobot' is the superclass of 'AugmentedRobot', that is exactly what it will do.

Apparently, you do not have a no-argument constructor for the Ship class and the constructor you do have required a Bar object reference be passed to it. Try changing line 96 to this: <Code Omitted>

It is indeed a hardware limitation, shift worked, thanks! @davmac

Yeah but he's really helpful :)h

we solved it:) thanks for all the help:)

Oh, sounds good. Than i hope my shool migrate from Windows XP to Win7 or 8 so we can use Java 8. ^_^ Greetings, L.

Why do you have three subclasses? Are the requirements different between each actor? I mean: why not just have three instances of one class?

I think you just need to add another condition (other than whether it is going left or right) for mirroring the image. That is, something like this for adjusting the image: <Code Omitted>

i'm trying to make a pacman style game and the issue i'm having atm is with the ghosts turning too much/getting stuck. there a way i can do somthing like if within.1 of Wall.class turn?

In World_1: <Code Omitted><value> should be a data type.

Because the 'addObject' method is a World method, you need to qualify the method call with a World instance. In this case you can use the 'getWorld()' method to obtain a reference to such an instance. The code would look like this: <Code Omitted> This really should have be