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Of course it is. You just need a reference to the object of that class whose image you want to change. For example, if an ActorA object intersects an ActorB object and you want to change the image of the ActorB object from the ActorA class: <Code Omitted>

Switch lines 27 and 28. After calling the 'removeObject' method, calling 'getWorld' will return null.

I actually just figured out my problem. I changed the coding for several classes and I got it to work.

Well I'll be.. it worked! Thank you danpost. I'll see about making good use of this. Some other thoughts occured to me while waiting for a response, I may be able to work on this through another way. But now that this is working it will help me immensely. Sorry for all the confusion, I'm very new to this.

Edit on last post: had wrong scenario listed; it has been corrected. The scenario uses a slowdown rate of one (true slowdown value of 1/100) and an acceleration rate of twenty (true acceleration value of 20/100 ).

You are asking for everything. Have you even tried? Where is your code? What part are you stuck on?

Thanks both of you! Look forward to my work soon up; working hard.

I see what you mean, if the Asteroid is class is being removed it would make sense why I was getting a null pointer. Hopefully I'll get a chance to get it working tonight. Thanks.

thanks

Thx a lot it works with this!

I think you should read the tutorials, especially #6.

What part are you having trouble with?

Remove the following lines: 12, 15 through 19, 23 & 24, 26 through 28, 48 through 57, 70 and 105. Line 12: not needed because the variable defaults to zero; Line 15 through 19: does not do anything and looks out of place; Line 23 & 24: not needed because the variables default to zero; Lines 26 through 28: variable is not used anywhere in the class Lines 48 through 57: belongs in the Moon world class code Line 70: meaningless where placed (not used in method) Line 105: useless if changing worlds.

The Java tutorials is the best place to start. Begin with the second section on the left, named Trails Covering the Basics.

I am not sure what it really means, either. I am quite sure it would not even compile as written. The methods 'normalMan' and 'manOnFire' are both showing that they are to return a boolean type value, but no values are being returned at all. Change both occurances of 'boolean' to 'void' and it will compile. Then, you will need an 'act' method to check for collision; and when the collision occurs call one of the two methods. You should call the other method in the constructor block to initially set the image of the actor.