Fortunately, this is not too hard. However, I have some questions: - When the fish reach the edge of the world, do they have to turn a specific amount? - Do you want me to make this simulation, post the code, and then you have it? (I trust that you will use it then look at what I did and learn from it) - Also, is this like some sort of assignment at a school? If so, when do you need it by? But I would be happy to do this for you under the condition that you do actually attempt to learn how I got everything to work.

I think they just have to turn around and go in the other direction. It's due tomorrow at midnight, and that would actually be perfect because I've been really sick and I've missed basically every example and I'm just so lost. I would probably be able to teach myself, thank you so much!

These are all of the individual classes starting with the world class. For ease, just use the names I've given as the name of the class. Each class here can be copy & pasted into the right class. If you have any questions about the code, ask me. Also, if you want to post this simulation on www.greenfoot.org, you can, but make sure that you give me credit! PUT THIS UNDER 'WORLD' AquariumWorld import greenfoot.*; public class AquariumWorld extends World { public AquariumWorld() { super(600, 400, 1); addFish(); } public void addFish() { for (int i = 0; i < getWidth() / 100; i++) { addObject(new Yellowfish(), Greenfoot.getRandomNumber(600) + 20, Greenfoot.getRandomNumber(400) + 20); } // CUT add other fish } } PUT THIS UNDER 'ACTOR' Fish // CUT: Animal class deleted - not needed. It's easier without it anyway PUT THE REST UNDER 'FISH' Yellowfish import greenfoot.*; public class Yellowfish extends Animal { public void act() { moveRandomly(); checkForWorldEdge(); checkForYellowfish(); subtractHealth(); checkHealth(); } private int health = 800; public void moveRandomly() { // CUT } public void checkForWorldEdge() { // CUT } public void checkForYellowfish() { // CUT } public void subtractHealth() { // CUT } public void checkHealth() { // CUT } } Greenfish import greenfoot.*; public class Greenfish extends Animal { public void act() { moveHorizontally(); checkForWorldEdge(); checkForYellowfish(); subtractHealth(); checkHealth(); } private int health = 400; private int turn = 25; public void moveHorizontally() { // CUT } public void checkForWorldEdge() { // CUT } public void checkForYellowfish() { // CUT } public void subtractHealth() { // CUT } public void checkHealth() { // CUT } }

Come on guys - that's not how it's done. If you're posting a complete solution of what is clearly school homework, you're not helping. If it's your homework, you might first be happy to get it, but all that happens is that your teacher thinks you're okay, moves on to more difficult stuff, and at the end you fail the test. @Royalblue64: It's great that you're willing to help, but if you really want to help: Explain how to do it, don't poste the code for copy and paste. (And by the way: there are much simpler ways to do many of these things that you have posted. If you're starting to talk about it, you would find out!) I have deleted parts of the code posted above. -mik-

@shutterbugemily Yeah, I hope you're not just copying stuff down. Read it over, get an understanding of what's happening in the code, then with that in mind, go and write some stuff out. Your mark is important in class, but once you're done class your understanding is worth way more than your marks.

I asked him first if he would try to interpret the code and understand how everything worked, and he said that he could and would. Also, if you take some code that you don't understand and use it for other things that are assigned, you start to understand how it works anyway. I've used that as a way to learn code in more than one programming language. Now on a different topic, I see that you deleted just about every method I made and said that there were simpler ways to do it. What ways are these? Some stuff I get, like the code I ripped from the animal class I could use something else, but the other stuff? I don't really see how I could get rid of all of those methods... Any help with that would be great. And by the way: I actually meant to put in comments explaining stuff but I forgot. Sorry.