Discussions

Working on the assumption that you want 'vtr' to represent the distance and direction that you want to place a planet from myShip, then, there are a few lines that look wrong to me: 18. addObject(new Planet() 19. (int)vtr.getX(),(int)vtr.getY()); You're not adding the ship's co-ordinates the vector; it should be more like: addObject(new Planet() (int)vtr.getX() + myShip.getX(),(int)vtr.getY() + myShip.getY()); And with this: 08. vtr = new Vector((double)myShip.getX(),(double)myShip.getY()); ... is setting the vector size an

btw for first error i based it off tut access p2 and a little of nightmare: emergence

Hi, No need to thank, I'm just pleased to help. You are trying to call setFont on the String object text. You need to setFont on a GreenfootImage I believe, so image.setFont(font) in your case.

Is there any way to see what else is coming in that update?

haha yeah that's pretty redundant...thanks for the optimization tip, i'm gonna switch that now. i guess i should have seen that earlier

replace if(KeyNum = x) with if(KeyNum == x). = is used when you're setting something equal to something else (int score = 7 makes a variable "score" and sets it equal to 7. == is used when you're checking if something is equal to something else (score == 7 checks if the variable "score" is equal to 7, and returns a boolean, meaning that when score is equal to 7, score == 7 is exactly the same as true) Oh and in case you didn't know (I assume you do but just on the off chance) a

Thanks, but problem is solved by reading the book better! Not using the mouse to touch the keys but using the keyboard really ... sorry for (stupid) question ;-) Peter

private int shootDelay = 0; private final int SHOOT_DELAY_MAX = some number; // shootDelay++ if (shootDelay >= SHOOT_DELAY_MAX) { do stuff shootDelay = 0; } what do you think about this

You could make the images wider, or you could drop 3 per act. You could try: <Code Omitted> instead of <Code Omitted> I hope that this helps.

Yeah, it's not affected by the speed slider because it counts off of real milliseconds and not frames. (Although, to be honest, I normally use the "int--, if < 0" anyway).

Or <Code Omitted>

Thanks so much tut newbies eh

Yes. I'll go through the tutorials. Can't argue with your logic!

The Java Tutorials contain many trails, and has an abundant supply of information linked to this page. I suggest you start by going to the second sub-title on the left in red --'Trails Covering the Basics', and the second item listed under that is 'Learning the Java Language'. Click on that and you will be on your way.