Discussions

Yes. Greenfoot's built-in collision detection uses bounding boxes for collision detection, so it doesn't care if the pixels are filled or transparent. You may be interested in this pixel-based collision detection scenario , which has code you could use for colliding based on transparent/non-transparent pixels.

Not the button on the site -- the button in your Greenfoot application. Load the scenario, then click the button at top-right of window (should say "Share").

Why are you checking for more than 5 scrolls picked up, if only picking up 5?

You have yet to initialize the second set of images.

You cannot slow the animation by delaying the initializing of the animation images. You will need an extra counter to count act steps between image changes. You will also need to keep track of the last direction moved so this new counter can be set properly to change the image immediately when the direction does change. First, however, you should note that with your current code, some unwanted behavior will occur. Imagine, if both "a" and "left" are down, the speed double

Thanks!

Inverting should not change the speed -- it should change the direction:

Since the ForceField objects created belong to the Rocket objects that create them, maybe the ForceField class should be inside the Rocket class. Either way, the ForceField object created by a Rocket object should be referenced in the Rocket class and controlled by the Rocket object it belongs to.

@danpost I took the setPaintOrder method and ended up putting everything in order. The speed on everything is super choppy. This trying to figure out how that out.

You're right, danpost, I hadn't spotted that colision can also remove the object.

Ja, Ausrufezeichen werden zur Verneinung eingesetzt.

Where does the 30-second delay come in? When does it start? What, if anything, happens during the delay? And what happens when the 30 seconds is up? There are two things about the code provided that should be noted. One is your loose use of the getWorld method throughout the class. Once: the line <Code Omitted>

Thank you, it works. I guess I was thinking wrong.

In a World subclass, you would use: <Code Omitted>