How can I create an object orbiting around another object?

[Emerson3]

Hey Clickteam,

I want to create an object that orbits clockwise around another object, just like the moon traveling around the earth. How can I accomplish this in Fusion?

[Kentronisk]

There is a custom movement called "Circular" that will make the object move around a fixed location. Are you planning on having this object to move around an object that is also moving?

[Emerson3]

Thanks Kentronisk.

That's easy! I'm about to start making a game where the player is a small astronaut that has to jump from Planet to Planet. I want the astronaut to constantly orbit each planet that it's on. When the player hits the fire button, the astronaut will launch in a straight line, so hopefully the player aligned the astronaut to the next planet. If not, the astronaut will suffer a cold, cold lack of oxygen fate.

[schrodinger]

Hey Emerson,
what Kentronisk said is for sure the quickest method,
and if you plan having that multiple planets in fixed positions you can get it to work by creating multiple circular movements.

For more complex behaviours, some trigonometry can do, let us know if you need some advice

[Emerson3]

Yo Schro!!!

I'm going to start basic with the levels and as the players progress, I would want complexity to the movements. Is there a tutorial or an example that show different behaviors of objects using Trigonometry? Also, one question. Let's say the astronaut is orbiting around one planet and launches to the next planet, how would this next planet "catch" the astronaut so that he's orbiting around it's gravity?

[schrodinger]

Yeah, you got straight to the point
that would be the most tricky part, probably.

Question:
1- you want to catch the astronaut at some fixed distance from the planet
2- you want to catch the astronaut in a range of distance from the planet (like > 50 <100 pixels)
3- you want to apply some sort of gravity as the astronaut approaches the planet, so that if its "momentum" is small enough he gets gently "grabbed"

1 & 2 are going to be the easiest,
while for 3 Physics Engine may possibly give you some help, but I've never experimented much with that so I can be of little help.

You can probably emulate this behaviour without physics, maybe simplifying a little the number of forces in play,
like gradually changing the angle of the astronaut as he approaches the planet, to make it gently aim towards the planet,
and then activate the orbiting code.

Orbiting can be, again, the circular movement that gets activated,
or some trigonometry code.

If you don't want to mess with math, maybe you can try experimenting with physics, just to see what comes out.

But if you have no luck, this is going to be much of a "math" game from what you say

[Emerson3]

Great Schro!

As for the beginning of the game, I'll start without the gravitational pull, just button press, launch astronaut, collide with next planet at fixed distance, repeat. Then later as the game progresses, I could input launch "strength" and gravitational pull where the player could hit the planet, but if too hard, they could fall out of gravity!

Okay, so questions on how to accomplish number one.

1. Would using "circular movement" be the best method for orbiting around planet?
2. When button is pressed for launch, how to launch in linear path away from planet?
3. How to collide with planet at fixed point?

Thanks Schro for your help!

[advaith]

I'm about to start making a game where the player is a small astronaut that has to jump from Planet to Planet.

By the way, I have made an app like this:

[Emerson3]

Oh no Advaith!!!

I honestly didn't mean for any similarities. I thought of the idea and naturally astronaut and planets popped up. I'm gonna go back to the drawing board with the characters and plot so not to duplicate.

[advaith]

No, it's ok, you can keep your idea, it seems to be more interesting than mine.