Need help with making a planet with a moon orbit the sun.

Shayy

.

Chrisir

Try formatting your code

Empty line before and after code section

Mark the code with mouse

Ctrl-o

Chrisir

Does it work?

What is missing?

Shayy

Whenever I run the TestPlanet I get ''Could not run the sketch (Target VM failed to initialize).''

jeremydouglass

You can also search the forum for past discussions of orbiting planet simulations -- there are many. Search for "orbit" "planet" "solar" etc., e.g. How to model the solar system, etc..

Chrisir

Is this one sketch or 2?

Shayy

Chrisir, I'm not sure if you can open this link or not but try https://github.com/barcaxi/oop/blob/master/assignments/Assigment1.md#part-1---moon-and-planet-classes. Its 2 sketches, I can do the first sketch where the moon just orbits nothing and is on a blank background but I can't get it working with the planet added.

Chrisir

Maybe it crashes when you don't have setup and draw

Shayy

Is this not correct then, this is what I have in my tester.

Planet earth;

    void setup()
    {
      size(800, 800);  

      // add tester code here - create a planet & moon object, call some of its methods, etc.
      Moon moon = new Moon("moon", 7.5, 50, 2, 28);
      Planet earth = new Planet("earth", 25, 200, 1, moon);

    }

    void draw()
    {
      background(0, 0, 0);
      fill(255, 255, 0);
      ellipse(width/2, height/2, 100, 100);  
      translate(width/2, height/2);
      earth.display();
    }

Chrisir

Yeah sure

Chrisir

Just put it all together

Shayy

When I go to run it now I get this. http://puu.sh/rUnBo.png

Shayy

No idea how to fix it

Chrisir

Test it

Read it thoroughly

jeremydouglass

No idea how to fix it

@Shayy --

• What do the error messages say?
• What line numbers do they refer to?
• When you look at that line, is the message a correct description of a problem?
• How could you fix the problem?
• If you don't understand, could you look the error message up? Or look up how the parts are supposed to work?

Once you have tried to fix the problem, if you are still struggling, come back, explain what you tried, and explain what you are trying to accomplish -- and forum members will help!