Greenfoot

2021/3/3

how can I get the world from an empty class?

2021/3/3

Hi, I wanted to ask if anybody knows a way to gain access of the world "MyWorld" from a custom class without using the help of an actor class. Then, I want to use the variables and the built-in methods from the world. Is the world able to pass itself to a public variable inside of the custom written class (that hasn´t got built-in methods from Greenfoot)? Thank you very much in advance!

rocket770

2021/3/5

I assume you're trying to create a reference to the world object without using getWorld()? In your world-class have this variable:

public static MyWorld world;

Then in the constructor of the world-class:

world = this;

So, in your custom class, you can have this as a variable:

MyWorld world;

And in the constructor of that custom class have this:

world = (MyWorld)MyWorld.world;

Replace all the "MyWorld" with the name of your world-class. In the custom class you should be able to call any world method such as world.getBackground().whatever() Hope this helps, let me know if I made a mistake anywhere or, if there's a simpler way to do it.

danpost

2021/3/5

You can add a World type parameter to any method in your custom class that requires a reference to the world. That way, those methods are easily usable to multiple worlds.

Who_TheGreen

2021/3/14

Thanks a lot, rocket770! It works perfectly, helps me out a lot! Best regards, stay safe and stay healthy!, Who_TheGreen

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how can I get the world from an empty class?