How to rotate boject using UI button?

Questions & Answers
1

I want to make UI button that after clinking on it and hold will rotate object.

I wrote script but it only rotates object everytime button its clicked.
Seem like Update function doesnt work after writting (“float a”)

   public void Update (float a) 
    	{
    		if(a==1)
    			transform.Rotate (new Vector3 (0, 10, 0));
    	}

How to make object rotate whilke UI button being held down?

2

I guess you have an OnClick event. If so then change that to onPointerDown event and call a public function in your script to set a bool to true.

Add another event onPointerUp that calls another function to set that bool to false.

Then in Update if MyBool = true rotate.

Sorry for not putting all the code I’m typing on my phone.

Should have said Add Component Event Trigger to access the pointer down and up.

EDIT:

Well @Cocobongo pretty much wrote the entire thing out for you so what’s the problem?

3

The Update() method needs to remain parameterless, or Unity won’t call it.

As @Mmmpies said, you could use a boolean variable to toggle between rotating and not rotating states.

So, all in all, something like:

private bool _rotate;

void Update()
{
    if(_rotate)
    {
        transform.Rotate(new Vector3(0, 10, 0));
    }
}

public void OnPress()
{
    _rotate = true;
}

public void OnRelease()
{
    _rotate = false;
}

Attach an Event Trigger to your button and have its OnPointerUp and OnPointerDown linked to OnPress() and OnRelease()

4

Dear Cocobongo and Mmmpies,

Your answers have clarified my problem too, thanks. Because I used to have a similiar problem with Zer0Frost had. Your opinions worked like a charm. :slight_smile: Finding answers even after 3 years is cool.

Thank you.