Rotate around center point

satoshiwakata

Hi there!!
Does anybody know how to rotate actor around center point?
like this figure?
↓

Armelline

Does it rotate at a constant rate (if so does it need to be stoppable), or is the rotation controlled by the player?

jamie_c

Now that we have the ability to change the Center Of Mass, I'd just offset that and then use a Rotate Behavior to rotate around that point.

LumpApps

See example project.
Constrains used:
284+(100 * sin(time * 500))
160+(100 * cos(time * 500))

284, 160 = centerpos.x,centerpoint.y
100 = radius
time = self.time
500 = speed

tmann

@satoshiwakata https://en.wikipedia.org/wiki/Pythagorean_trigonometric_identity
https://en.wikipedia.org/wiki/Unit_circle

satoshiwakata

Armelline

Thank you for your reply.
This is what the rotation controlled by the player.
I intend when player touch actor, actor rotates against center point.

satoshiwakata

jamie_c

Thank you for your reply.
Would you explain concretely?

satoshiwakata

LumpApps >
Thank you for you reply.
Unfortunately, I could not open your file.
If you could, would you send to me again?
And, I am going to try in use of your comment.

satoshiwakata

tmann

Thank you for your reply !!
But, I want to more elementary tutorials.

Socks

@satoshiwakata said:
I intend when player touch actor, actor rotates against center point.

First: move the Centre of Mass.

Rule:
When mouse button is down
--Rotate behaviour.