RotateAround

[jeanfabre]

Hi,

 Following a post:

 Please find a very important addition. being able to use the rotateAround function.

 You can specific a gameObject to rotate around, and also specify that the axis are defined locally, ( so the gameObject will rotate around this target position AND axis).

Also, If you specific a gameObject to rotate around, the position variable will be use as an offset.

 

Code: [Select]

// (c) Copyright HutongGames, LLC 2010-2012. All rights reserved.

using UnityEngine;

namespace HutongGames.PlayMaker.Actions
{
[ActionCategory(ActionCategory.Transform)]
[Tooltip("Rotates Around a Game Object.")]
public class RotateAround : FsmStateAction
{

[RequiredField]
public FsmOwnerDefault gameObject;

[ActionSection("Rotation position")]
[Tooltip("Rotate around this GameObject.")]
public FsmGameObject aroundGameObject;

[Tooltip("Rotate around this point. If 'aroundGameObject' defined, will offset by 'rotationPoint'")]
public FsmVector3 rotationPoint;

[ActionSection("Rotation axis")]
[Tooltip("Rotate around this axis.")]
public FsmVector3 rotationAxis;

[Tooltip("If 'aroundGameObject' defined and 'useAroundGameObjectAxisSpace' TRUE, 'rotationAxis' will be defined in 'aroundGameObject' local space.")]
public FsmBool useAroundGameObjectAxisSpace;

[ActionSection("Angle")]
[Tooltip("Amount to rotate in degrees.")]
public FsmFloat angle;

[Tooltip("Rotate over one second")]
public bool perSecond;

[ActionSection(" ")]
public bool everyFrame;

public override void Reset()
{
gameObject = null;
aroundGameObject = null;
angle = null;

useAroundGameObjectAxisSpace = false;

perSecond = false;
everyFrame = true;
}

public override void OnEnter()
{
DoRotateAround();

if(!everyFrame)
{
Finish();
}
}

public override void OnUpdate()
{
DoRotateAround();
}

void DoRotateAround()
{
var go = Fsm.GetOwnerDefaultTarget(gameObject);

Vector3 _rotationPoint = rotationPoint.Value;
Vector3 _axis = rotationAxis.Value;

GameObject aroundgo = aroundGameObject.Value;
if (aroundgo!=null)
{
_rotationPoint += aroundgo.transform.position;


}

if (useAroundGameObjectAxisSpace.Value)
{
_axis = aroundgo.transform.TransformDirection(_axis);
}

float _angle = angle.Value;

if (perSecond)
{
_angle *= Time.deltaTime;
}

go.transform.RotateAround(_rotationPoint,_axis,_angle);

}

public override string ErrorCheck()
{
if (useAroundGameObjectAxisSpace.Value && aroundGameObject.Value==null)
{
return "'useAroundGameObjectAxisSpace' is only effective is 'aroundGameObject' defined";
}

return "";
}

}
}

 Any suggestions or comments to improve it welcome as always.

Bye,

 Jean


[Andrew_Raphael_Lukasik]

Yes! I just needed that thanks, very usefull for cinematic cameras

[cel]

I'm trying to get my object to increment its rotation around another object each time a key is pressed, can't get it to work... coud someone post a screen on how to achieve this? Thanks in advance

[bigzer]

Great Action Thanks

A small improvement whould be to have checkboxes for the axis instead of X Y Z forms.
It whould make this action more clear to understand.

Anyway great work ^^

[jeanfabre]

Hi,

 Well, doing so would constraint into orthonormal rotation, while offering the vector, means we can rotate around any direction in space.

But yes, less intuitive than check box I give you that...


 Bye,

 Jean

[4s4]

thank you for this! my own version of this wasn't nearly as useful

[jeanfabre]

hi 4s4,

 We all have to start somewhere, and I am sure this action can also be improved anyway! I hope you have learned things, and be able to apply it to new actions you will build, don't forget to share them back, this will be greatly appreciated!

Bye,

 Jean

[Sebastião]

Lovely thx a lot Jean
Bye

[sinman]

Hi Jean and co,

I wanted to use this function and downloaded the CS script by Jean. I've dragged the file onto my project folder, then dragged this script onto a game object. However, I get the following message:

Can't add script behaviour RotateAround. The scripts file name does not match the name of the class defined in the script!

How can I go about implementing this function?

I have
- Unity 3.5.5f3
- Playmaker 1.4.3
- OSX

Thanks.

[avrigus]

Hey Sinman,

I haven't used this action yet but i'm pretty sure you have to drag the script into your /PlayMaker/Actions/ folder for it to become active as an action via PlayMaker.

Once you've done that it should be accessible under the Transform action category.

Hope this helps 

Simon

[sinman]

Hi Avrigus

Thanks for the input. The idea for looking into the action browser has totally eluded me. Works fine now. Thanks!

Sinman

[amaranth]

I'm trying to use this, but I think I'm confused. Maybe I am trying to use this for the wrong thing? Here is what I'm trying to do:

World is 2D. Sun only moves on X & Y axis. Sun doesn't rotate, but moves in a circle around the core of the planet.

Is this something RotateAround does? Or should I be using another action? I'm avoiding iTween since I heard it's bad for mobile.

Thank you for any help.

[amaranth]

Never mind, I found this. Didn't realize how simple it was.

http://answers.unity3d.com/questions/38932/Circular-movement.html