Discussions

The 'public static int FlysEaten = 0;' statement will be used to keep track of how many flies that ALL of your spiders have eaten. I believe the 'canSee(Class cls)' and the 'eat(Class cls)' are methods inherited from the Animal class. The 'canSee' will check for intersecting flies with this object, and if there are any, the 'eat' will remove one. Then the counter increments with 'FlysEaten++'.

Thanks!

well ive fixed it now (could be a bug) i closed the program and restarted it

From the code you have given, it appears that all you see is the note. You can only set one image to each object (but different objects of the same class can have different images). You are creating the fiveLine image and setting it to the object, then you are creating the note image and now setting it to the object (which replaces your fiveLine image). I do not see where you 'addObject' the note object into the world. From your act() method (drawFiveLine(); drawNote();), it appears that you are trying to create two different objects with the same object class. If this is so, you need t

Okay, nevermind; (it doesn't say the URL, it just shows how to get there). Yes, the video is old and out-of-date. But you can easily get the support classes at the URL I provided above. Also Greenfoot 2.2.0 will come with several support classes that you can import into your scenarios.

You can just change the '8's to 'getWorld().getWidth() - 1' or 'getWorld().getHeight() - 1' (depending) and it will work for any size board. I checked up on 'Go (board game)' on Wikipedia. The corners are safe and the edges are fairly safe; so, what I had prior to the most recent code post was more to the rules of the game. That is, for lines 19 through 22 above, you would use:

import java.util.List; public int pointTo(int x, int y) { int dX = x - getX();//get distance between mouse's X and player's X int dY = y - getY();//get distance between mouse's Y and player's Y double rotation = Math.atan2(dY, dX); rotation = Math.toDegrees(rotation); return (int)rotation; } List<Worm> crab = getObjectsInRange( 2000,Worm.class); if(crab.size()!=0){ pointAtObject(crab.get(0)); move(6.0);}

"Help" -> "Greenfoot Class Documentation"

No. That is not possible. Although, you could create a public method that will except a keystroke and store it for future use, if that is what you want. Why would you want to 'pause' the execution of the scenario and still allow keystrokes to be directed to it? Maybe(?) you did not explain what you wanted clearly enough and there IS(?) a way to do what you want.

Ok it is running =) thank you - But there is still an other problem: When I want the snake to jump and I push the "jump key" two or more times while the snake is jumping for the first time, it also will jump two or more times after landing - also when I don´t push the "jump key".

thanks! I did what you said and it now works. changed the getOneIntersectingObject method to the getOneObjectAtOffset method.

To answer your first question: You could use turnTowards and then turn(90). You would always move at a tangent...

A similar thing (changing the image by rotating through a set of different images) is explained in the Joy Of Code, Episode 17 (towards the end). However, there it uses an if-statement instead of the modulo operator (%). The modulo operator is a little more elegant, using an if statement is (initially) easier to understand. The bit about changing images starts around 16:40.

I agree with Morran. I like the interface of Gimp but learning to navigate through it can be hassle.