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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:

never mind. I got it working with a try catch statement. Sorry about not posting the code

Exactly right. Actors will be limited to (0, 0)-(getWorld().getWidth()-1, getWorld().getHeight()-1). The only space that might seem to exist is where half the image of an actor is "hidden" beyond the edge

If you do not want the bullets to change directions when an arrow key is pressed, then you should remove lines 3 through 18 in your bullet code above. It might work if those lines were in the constructor of the class; however, it would probably be best to set the rotation of the bullet when it is created. Unfortunately, you did not give enough Tank class code to allow anyone to help you fix it there.

thank you so much ... worked great!!

alright, cheers again chaps

It looks like your instruction pointer is at the 'setImage' line (where it has not executed yet). However, there is a very easy way to accomplish what you are trying: <Code Omitted>

Aaaand I feel dumb. Yeah, that fixed it. Thank you!

thank you danpost, didnt even see and noticed that. thanks a lot

This could work: <Code Omitted>

Never mind I may have found a fix by resetting the images assigned to each actor by right clicking and choosing set image.

Omg i found my big mistake.. It's maybe good to share this with others.. I found a platform(ground) image where he stands on and made it transparant( because it had a white background ). But their was still a few inches of transparency above the ground that i didnt cut in my program. So he was just standing on the 'invisble' part of that image. Thanks anyway for the improvement of my code

Thank you very much, it's working :D