Algodoo

What are the control keys? Arrow keys don't seem to do anything.

Also, you say "Try to land on the moon!" So, where is the moon? I see the green planet, but no moon.

WAIT... I think I see the problem. You have TWO versions of this scene stuck together. There is a green planet located at pos [0,0] and another one at pos [1528.0, 1536.0]! Download this scene and see for yourself!

Oh, forgive me. Making the same mistakes every time. the moon is off to the right and the controls are WASD.

Also, the stuff off to the top right is the "True" stuff of the scene, like where the planets are in real life. The stuff around the origin is the "Model" stuff, think a 3d model of the solar system.

Are you sure that you took care of the things I mentioned earlier? The WASD keys control a tiny rocket (a white circle) which is very far away from the planet and moon. In fact it is near the other planet in your scene which is at origin [0,0]. It is not near the planet that has 4 lasers. Did you see that you have TWO planets and TWO moons in this scene?

TIP: Each time I upload a scene to Algobox, I immediately download the same scene and test it just to make sure I didn't miss something. I don't believe you did that, because if you did, you would see the problem that I am seeing. There is something weird in this scene which I don't think you see!

Yes, I am aware of the double planet and double moon, it's intentional. It's really hard to explain, but the bigger stuff near [1528.0, 1536.0] is what you say it is, the real rocket, the real planet and moon. The stuff about the origin is a scale model of the bigger stuff, only representing the real stuff, a bit like a screen representing the internal state of a computer. You're meant to look at the scale model to use the scene, because just like in real life, you can't know where the moon or a satellite is without measuring and putting together a visual model.

Okay, I can understand that. But (yup, there's still a but) the tiny circle you call a rocket, which is controlled with WASD keys, is SOOOOOOOOOOOO far away from the planet with the lasers that a user cannot possibly see what he/she is controlling. The scene starts with the planet/lasers and the moon being displayed in the center of the screen but the rocket is no where in sight. That's because it is located way over next to the planet that you call the scale model. Was that intentional?

Yes, that was intentional. I edited the title to state that the four lasers intersect at the measured position of the rocket, down in the scale model. If you move the rocket around, you can see that the intersection moves around just like the rocket does all the way out there. It's sort of like a radar screen!