Discussions

'wait' is a Java method which you shouldn't use. Use Greenfoot.delay(...).

In the world class code: <Code Omitted>

Right so, it is initializing the Player as null., and then a null pointer exception right. Can't believe i missed that! Thx for quick reply

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