How can I make 9 or more or fewer actors orbit around a single actor?

Dell7730

Just want to make a little demonstration of how 9 planets look like orbiting our sun, with different distance and speed. At least show me 2 actors around 1 actor, i'll take care of the rest, just need to be shown the direction.

Socks

Constrain position X to

Distance * cos ((self.time * speed) + angle offset) + Sun's X

Constrain position Y to

Distance * sin ((self.time * speed) + angle offset) + Sun's Y

Socks

@dellagarpo said:
follow up question, they all start at the 0 angle position of the sun, how can i make it start at another angle? reason i asked is, what if there's two orbiting actors with the same distance? they will overlap each other, so how can I make one anchor at 0 degrees and one at another point?

Could your question be summed up as 'how do I offset the angle' ?

Socks

P.S. For moons travelling around planets, that travel around the Sun, you just need to add the moon's constrains (in relation to the planet) to the planet's constrain values (in relation to the Sun).

Hope that makes sense.

Socks

@dellagarpo said:
it does, it really does, just find the anchor point of which to orbit around on

Yes, exactly.

So Earth would be . . . .

Constrain position X to
Distance * cos ((self.time * speed) + angle offset) + Sun's X

Constrain position Y to
Distance * sin ((self.time * speed) + angle offset) + Sun's Y

. . .

And the Earth's moon would be . . .

Constrain position X to
Distance * cos ((self.time * speed) + angle offset) + Earth's X

Constrain position Y to
Distance * sin ((self.time * speed) + angle offset) + Earth's Y

EDIT - example attached.

Lovejoy

@dellagarpo said:
the orbit rotates counterclockwise, is there a way to switch it around?

use a negative number for speed

ex. Distance * cos ((self.time * -speed) + angle offset) + Sun's X

Dell7730

@Socks said:
Constrain position X to

Distance * cos ((self.time * speed) + angle offset) + Sun's X

Constrain position Y to

Distance * sin ((self.time * speed) + angle offset) + Sun's Y

Thank you very much, as usual, you're one of my most valuable resource for knowledge

Dell7730

follow up question, they all start at the 0 angle position of the sun, how can i make it start at another angle? reason i asked is, what if there's two orbiting actors with the same distance? they will overlap each other, so how can I make one anchor at 0 degrees and one at another point?

Dell7730

@Socks said:

Gotcha, thanks again

Dell7730

@Socks said:
P.S. For moons travelling around planets, that travel around the Sun, you just need to add the moon's constrains (in relation to the planet) to the planet's constrain values (in relation to the Sun).

Hope that makes sense.

it does, it really does, just find the anchor point of which to orbit around on

Dell7730

@Socks just curious, got any games I can check out and play?

Socks

...

Dell7730

@Socks

the orbit rotates counterclockwise, is there a way to switch it around?

Dell7730

@Lovejoy said:
ex. Distance * cos ((self.time * -speed) + angle offset) + Sun's X

Thank You Sir/Ma'am, I do appreciate it