What is happening right now?

You could implement this:<Code Omitted>my fly class is called Fly and the frog class Frog the variable where the Points are saved is called score Hope it helps

It would make things easier if you also use english words for your variables instead of german words

These aren‘t the best solutions, but I can‘t think of any other ideas… 1st You change the Lightcycles into an Object which changes his sizes or 2nd You create lists with the coordinates of the colored places and check if your objects is in range of these objects

Again, player will not be null. The check you want to perform on line 8 is: <Code Omitted>

Don't use methods which require the actor to be in the world after it has been removed. So move the removing of the object to the end of the act method or leave the act method if the actor isn't in a world anymore.

also you reference other world classes and other things here please post all the classes and the entirety of them. I did my best based on the info you gave but the code I gave you very likely wont work because there are parts of your code that I cant see