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Okay, thank you!

Yeah I'm not great at this at all haha. Thanks for your help mate

It works without throwing an exception in the terminal, but there's still the issue of currentIndex not increasing at all within Calculate class, and a new issue of ... Never mind, I made a couple small changes while typing this message which fixed these issues. All I had to do was change '//world.updateDisplay();' from a comment to code (in button class) and add 'Calculator world = ((Calculator)getWorld());' a couple lines above it. For some reason, hitting an operator throws an exception, but I haven't tried resolving that issue so I'll post another reply if I'm having difficulties wit

superb thank you

Actually, I think I got it! Thanks!

Changing the state (image, in this case) of one Player object does not do the same to all Player instances. You need to change the image of the one player already in the world (not create a different Player object and change its image; as well, that one was never put in the world, so its image is immaterial). Replace your first two lines with this: <Code Omitted>

thank you! it works.

Your Soldier class has one constructor. The one with a bunch of parameters. The subclasses should have a constructor which exists in the super class. So you could either create a constructor in the Soldier class without parameters. And/or the subclasses constructors should match. So the constructor of your Heavy class could look like this.

Apparently, rand is alternating between 0 and 1 inside the do loop, making x add and subtract; add and subtract. You need to be very careful with loops and make sure that they will eventually, at some point, be broken out of. Unfortunately, your coding is (1) undocumented; (2) bulky, and not easily readable; and (3) unfactored; -- making it virtually impossible to see what is going on (especially for an outsider). All I can say at this point is that you need better control of the flow within the loop. A visited cell should not be re-visited.

Thank you so much!!!!

Thank you, this prepare method at the bottom has become a habit for me. I really should bring it up to the top!

Ways to reverse it yourself might include: <Code Omitted>or <Code Omitted>("resu" is "user" backwards, if you were wondering)

Sorry, I no longer need to address this problem. This post took a long time to get approved, so I had to find my own way around it.

When your MyWorld object (or, your world) is created, the initial value of friendClicked is set to zero by line 107 (fields are created and set to their initial values before the constructor is executed). Since a constructor is only executed once per object created, the condition on line 31 will always be true and the else part of that if-else structure will never execute. Anything done after initial creation of an object cannot feasibly be coded in the constructor. Sometimes, some finalizing set-up is required once an actor is added to a world or when a world is

Change ‘world’ in line 20 to ‘getWorld()’. You might want to change ‘projectile’ to ‘new Projectile()’ as well.