Discussions

Unless I entirely misunderstand what you are wanting to do, I do not see why you would need a loop. On any given act step, the value of the shotDelay field will only go down once. If its value is not negative, you will only add one extra block into the world. On any act step a shot is fired, you would just remove all the blocks from the world. None of these actions requires a loop on your part.

I guess the other possibility is to double the width and height of the world and halve the cell size. Then, without changing the size of the images, you can have the bullet move faster. Actually from 21 x 14, you can go to 43 x 29, place and allow turning only on odd valued x- and y-coordinates so as not to really change anything other than non-bullet objects "half-stepping" it. This would also solve the bullet/edge issue. Restrict the rover and other non-bullet objects to x >= 1, y >= 1, x <= world width -2, and y <= world height - 2.

awesome, thank you very much you beautiful greenfoot user <3

I think you may have a misunderstanding about the way the act method works. You need to program it for what you want done at each instance of time. The act method is repeatedly called while your project is in a running state -- which is like the initial animation loop. Assuming that there will always be a right or left path to go if not able to go forward: <Code Omitted>should be sufficient. A choice would need to be made if left and right were both possible ways to go. You can repeat line 2 (copy/

What is the size of your world? what is the size of the image assigned to the Mountains class? and, where was your Mountains object addied into the world at? Do you have scrolling implemented? You may want to track the location coordinates of your Rocket object as double values so as not to lose precision (makes for smoother acceleration/deceleration).

Use the Greenfoot.getMicLevel method. If the returned value is less than a certain value, move right as normal, otherwise (else) move left. Btw, the commented text in the code reads moving left is normal and move right when noise is being made.

Please show Candy class code and MyWorld class code.

If the HealthBar object is contained by the SpaceShip object, then it would make good sense to have the space ship look for the Powerup object and not the other way around.

Yes, but your actor will not the be upright. Just negate the speed of the actor. First, see if there is an intersecting bomb. If so, then get the image and determine whether the location of the bomb is in the collectible region. The left edge of the basket would be at:

Personally, I would totally remove the Animal class from the project. I see only one "possibly" useful method in it (the move method) and it is not used in the Human class. All the others either have a method now in the Actor class that can be used in lieu of it (canSee, eat, turn, atWorldEdge); or, are badly written (access, removeObject); or, are related to poor design (displayMessage, clear). From a design standpoint, it would be better to use an actor, or actors, to display messa

Thanks!

With this method you can read the highscore file: <Code Omitted>

And you are my 500th fan (follower). Thank you.

See my Scroller Class Demos scenario. Would take a bit of calculating to just figure out which pixel in the background image would need to be looked at.