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Just add additional if statements in the 'isTouching(Door.class)' block.

How to create a button with text is explained in my Value Display Tutorial.

An inventory is just a list of items. Java already has an extensive supply of classes that create all kinds of lists. However, you might want some extra methods that are not readily available (like getting the number of objects of a specific type in the list; or, getting one or all objects of a specific type from the list). It would make sense then to create a subclass of the ArrayList class to add those methods that deal with Class types. Something like this:

Okay. Have world create and maintain the list adding when created and added to world and removing any that are removed from the world. Then, have the tower determine the first in the list from what are in range:

Show what code you tried when you got that error message.

Line 10 needs a condition: <Code Omitted>

@Super_Hippo, I was going to upload a copy of that scenario and test with it. I forgot to change the title when uploading, so it just updated the old one (with no changes). However, It appears UserInfo is working okay now. Thanks for the assist.

There is also this: <Code Omitted>

fixed it its fine

thanks a lots super_hippo, thanz soooo very much

thanks, this helps alot

It could look like this: <Code Omitted>

What does the error really say? Read all of the message.

The basics should be something like this: