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Quick Question

By Nnacheta56, with 3 replies.
Last reply by danpost, over 10 years ago:

Nnacheta56 wrote...

Thanks, do you know Which Greenfoot class method allows you to move an object from one world to another world?

That would be a World instance method -- the 'addObject' method. The method will place an actor in the world whether it is already in a world or not (provided it is not already in the world you are trying to add it into). For example, if you had a Level1 world with an Actor mainActor, you can simply create a new world and add the actor into it: <Code Omitted>L

Help with this game...

By DesignerOrb362, with 4 replies.
Last reply by danpost, over 10 years ago:

The Explosion class of the lunar lander scenario is quite portable. You only need add the class to your project and create a new Explosion object when needed. You will need the 'explosion.png' image added to your 'images' folder of the scenario as well.

Treasure Hunt

By Mickey09, with 56 replies.
Last reply by inkpenKingpin, over 10 years ago:

Thanks for the help with this. As someone pretty new to this, the step by step was pretty helpful.

How can i create a order-based scoreb

By DesignerOrb362, with 3 replies.
Last reply by danpost, over 10 years ago:

Super_Hippo wrote...

If you only evaluate the number of laps by the sum of the rotation, then you could turn without driving the track and it is still handled as laps.

Yeah, I had thought about that -- like the vehicle spinning out of control racking up the lap count. I did not think that would be an issue here (though, I could be wrong). Using checkpoints is a good idea, however (just more code to deal with).

One step forward, two steps back algorithm

By inkpenKingpin, with 19 replies.
Last reply by inkpenKingpin, over 10 years ago:

Need help with addObject

By qwerty1, with 9 replies.
Last reply by danpost, over 10 years ago:

Please read my last post again. I did not say that you cannot code it within an Actor subclass; I said it must be executed on a world object. That does not mean that is must be coded in a World subclass to execute.

getOneObjectAtOffset

By Revan, with 5 replies.
Last reply by danpost, over 10 years ago:

shouldn't those 2 worlds be the same size? super(600, 400, 1); super(6, 4, 10000);

Actually, NO. 'super(600, 400, 1)' would be the same size as 'super(6, 4, 100)'. Cellsize is a 2-dimensional value; that is, the height and width of a single cell will be cellsize pixels long. So, using 'super(w, h, c)' the total size is '(w*c)*(h*c)'. The big difference between a world of 'super(600, 400, 1)' and 'super(6, 4, 100)' is that an actor can be in one of 240000 locations in the first and only in 24 locations in the latter.

How to spawn an item when a world is loaded up

By DesignerOrb362, with 1 reply.
Replied to by Super_Hippo, over 10 years ago:

Write 'addObject(new ActorName(/* parameters if necessary */), x, y)' and replace x and y with the coordinates. Greenfoot also supports a save world feature to make every actor which you spawned manually will spawn automatically on the same position next time. To do this, right-click on the world background and click the last red line "Save the World". Instead of googling, you can read through the tutorials on this site, they will help you understand how the basics are working. Tutorial Part 1

How to make an actor continuously moving back and forth horizontally?

By strangers1412, with 18 replies.
Last reply by danpost, over 10 years ago:

Mickey09 wrote...

danpost wrote...

@Mickey09, what behavior exactly do you want your actor to have? What is it supposed to do while it exists in your game?

To put it simply, I suppose. I want to move (1); setRotation(0); move (2); setRotation(180); move (3); setRotation; move(1); setRotation (0); move (2); setRotation(180); move (4); setRotation(0); etc.

So... you do want your actor to jump back and forth with increasing distances. Look at what you will be doing each act cycle. Increment the distance, move that distance and turn around. You only need one di

Need some help with my scenario

By qwerty1, with 9 replies.
Last reply by danpost, over 10 years ago:

I was talking about how you passed the GreenfootImage object to the 'setBackground' method -- how the GreenfootImage object was created.

How to make money by becoming a programmer?

By Dalvengyr, with no replies.

I have been asking this to several places. I always feel afraid that I can't make money in the future by being a coder/programmer or game maker to be specific. As I have heard even a badass game developer such as play fish is struggling to keep the sale of their products, so what's going to happen to a no-one coder like me? :( How can I start my job as a programmer? What can I do? What should I do after I graduate from university? How can I get started? It's really scare my pants of. I hope some elder programmer here can give me tips.

Kurse material and programming assignments for university course

By stevegreen, with no replies.

I am teaching a university-level course in java; the couse starts with basic programming assignments. Currently, the assignments are: - my port of Karel the Robot assignments from Stanford (similar examples as in |1|) - Kara examples |2| - trick the turtle based assignments |3| I am also developing further examples and materials. However I don't want to reinvent the wheel if there are other good assignmens, as well as course material, availiable. What examples and course material should I consider prior to developing my own? Best, Steve |1| http://web.stanford.edu/class/archive/cs/cs106a/cs106a.1124/assignments.html |2| http://blogs.kent.ac.uk/mik/2012/01/joc-4/ |3| https://github.com/marcojakob/greenfoot-kara

Spawning cars that travel across the world left and right?

By DiplomatikCow, with 1 reply.
Replied to by danpost, over 10 years ago:

Where is 'addACar' called from? In the Car class, line 6 gives all cars a speed of 4 and line 25 will make all of them go to the right. You will probably want those cars spawned on the right that move left to be facing left (or rotated to face left). When the rotation matches the direction of movement, it is usually better to use 'move(int)' instead of 'setLocation(int, int)'. There are two places where you can rotate those cars spawned on the right. One is when you create the car (in the world class) and the other is when it is added into the world (in the car class).

SDFQS

By wxwxfg, with no replies.

SD http://www.greenfoot.org/topics SD

timer stop gameover

By JustMe, with 12 replies.
Last reply by Anne2403, over 10 years ago:

Thank u. @danpost

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