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No code; no details -- no solution.

is it like this scenario? See my scenario here

• It has a switch
• it spins only when it is switched on.

PS-Is it LIKE this scenario?

One problem is with the conditions used in your animation methods. In leftPunch and walkLeft, no matter what the number of frame below number of images in set times the delay, the last 'if' condition will end up to be true -- and its image will be what you end up viewing. Change "<' to ">' (or ">=') so all images in a set will be viewed at some point. In other methods, you are using '==', which is not only inconsistent, but may not work when changing from one image set to another.

Try 'GRAY', with all caps ( or 'new Color(128, 128, 128)' ).

Thank you!! That totally worked. I had a complete brain fart earlier while trying to work on this.

There are multiple ways to accomplish this. There are adding random turns; or moving random distances; or finding a corner and zig-zagging across the rows or columns; or finding a corner and counting steps across and down to spiral in toward the middle. I am quite sur

In the act method of the class of the moving actor: <Code Omitted>

I made a rework that made it work. Removed the GameSettings class and moved the scoreboard etc. to my world subclass.

Timers and Lives are basically values that are displayed and used to control the game. You could check out my tutorial. It should, in general, help. EDIT: minor adjustments might need to be made to the given code due to the version of Greenfoot you are using.

That is precisely why. The '<init>' in this line means that the constructor of the WombatRight class was being executed when the error occurred. The actor being created has yet to be placed into a world and cannot have its 'getWorld' method return any world at that time.

Your 'getX' and 'getY' methods in the Object class are trying to return a value from an actor that may or may not be present. If one is not present, you cannot possibly use 'calcX' on 'actor'. Check to make sure 'actor' is not null before calling 'calcX' on it. However, I do not know what value you would then return. Maybe return an Integer object instead of an int value so 'null' can be returned and the calling method can deal with that possibility. As a sidenote: I would refrain from using the name 'Object' for a class as ALL classes are already subclasses of an 'Object' class.

I don't really understand the code that you suggested, but thank you. I think it's a problem with the intallation of Greenfoot. I' using it on a school computer so I think it has something to do with that. My code should work. Thank you for your help.

Bingo! Thanks very much for this

Actually, casting it is what fixed it. The compiler did not know to look in the btn_ class as the reference in your first post was to an Actor type object (the return type of 'getOneObjectAtOffset') -- not a btn_ type object.