(2D sidescrolling platformer) Flipping my character right or left depending on the mouse?

Question

Hi, so I can't find anything similar on the forums, so I'll take a shot at a question.

I'm making a 2D platforming sidescroller, and I just have not idea how to flip my character right of left depending whether the mouse is on the right or left. Keep in mind, I know how to do angles as I am using it for rotating an arm around the body using:

 Vector3 difference = Camera.main.ScreenToWorldPoint (Input.mousePosition) - transform.position;
                 difference.Normalize (); 
                 float rotZ = Mathf.Atan2 (difference.y, difference.x) * Mathf.Rad2Deg;

But I just can't figure out how to do it. I make it so either my player constantly vibrates, flipping left and right, or doing nothing at all. I just don't know how to make/structure the code.

I tried using a previousRotZ which was put inside the character flip function and then having an if statement that went along the lines of:

 if( rotZ < 90 && rotZ > -90 && prevRotZ > 90 && prevRotZ < -90(
 {
 changedDirection = true;
 {

But that didn't help either. I just don't know how to do it. If anyone can help I would appreciate.

Answer 1

Answer by robforce · Dec 20, 2014 at 07:31 PM

Nevermind, it was easy to fix. Don't know why the code in the example 2D code has to be so goddamn complicated. All I needed to do for the rotation is this:

 transform.localScale = new Vector2(-xScale, yScale);

after declaring yScale and xScale to be floats, and setting them to be the transform.localscale x and y respectively.

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Answer 2

Answer by Jackv949 · Dec 20, 2014 at 10:02 AM

One solution I can think of involves checking the mouse position relative to the player.

Example:(Haven't tested it) void Update() { bool isFacingRight = false;

     Vector 3 playerScreenPos = Camera.main.WorldToScreenPoint();
     Vector 3 mousePos = Input.mousePosition;
 
     if(mousePos.x >= playerScreenPos.x)
         isFacingRight = true;
     else
         isFacingRight = false;
 }

Then you could use isFacingRight to set which direction the player is facing. Hope this helps :)

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(2D sidescrolling platformer) Flipping my character right or left depending on the mouse?

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