Rotate an object (391194)

Unity Engine
1

Hello all ,

I have an object and I want to rotate it slowly and 90 degree per hit enter. I made it easily with transform.rotate but it turns 90 degree very fast. I want to slow down it , like an animation.

Thanks ,

2

What I would do, is specify an orientation when it’s hit, then use Quaternion.Slerp to interpolate to the desired rotation, for instance

var DesiredRotation : Quaternion = Quaternion.Identity;

function OnCollisionEnter() {

DesiredRotation *= Quaternion.Euler( 0, 90, 0 );

}

function  Update() {
transform.rotation = Quaternion.Lerp( transform.rotation, DesiredRotation, Time.deltaTime );
}

[/quote]

3

Actually I need something like this :

function Update () {

if(Input.GetKeyDown(KeyCode.Return))
{

transform.Rotate(Vector3.forward , 90);

}
}

But it rotates too fast. I want it more slow. Anyone can help please ?

4

Make sure to link rotation and movement to Time. Otherwise, the rotation (or any movement) speed will be based on how fast your processor is.

90 * Time.deltaTime

5

When I do like 90 * Time.deltaTime it is only rotate 1 degree when I push Enter button. But I want to rotate 90 degree in every push and I want it slowly. Any other solutions ?

6

Well… the reason why you only rotate it like 1 degree then is because you only call the rotation function 1 time when you press the key. You should use something similar to this:

private var rotateTo : Quaternion;

function Start(){
rotateTo = transform.rotation;
}

function Update () {
	if(Input.GetKeyDown("a")){
		rotateTo = transform.rotation * Quaternion.Euler( 0, 0, 90 );
	}
	if(Quaternion.Angle(transform.rotation, rotateTo) > 0.5){
		transform.Rotate(Vector3.forward, 90 * Time.deltaTime);
	}
	else if(transform.rotation != rotateTo){
		transform.rotation = rotateTo;
	}
}

You start the rotation when you press a key and keep rotation till the desired rotation is reached.