Question Quaternion.Lerp not working as intended.

I am trying to rotate the character with a delayed rotation something like Paper Mario. i am using this to rotate the player in y axis.

Code (CSharp):

1. Quaternion newRoatation = Quaternion.identity;
2.             newRoatation = Quaternion.Euler(0f,360f,0f);
3.             transform.rotation = Quaternion.Lerp(transform.rotation, newRoatation, 10f * Time.deltaTime);

when ever it rotates it ends up in y = -28.07

i dont understand it.

This is the full code.

Code (CSharp):

1.  Rigidbody2D rb;
2.     Animator anim;
3.     public bool isGrounded,facingRight,flip,canFlip;
4.     public float charSpeed,jumpHeight,maxSpeed = 7f;
5.    
6.     Vector2 direction;
7.    
8.     // Start is called before the first frame update
9.     void Start()
10.     {
11.         facingRight = true;
12.         canFlip = true;
13.         anim = GetComponent<Animator>();
14.         rb = gameObject.GetComponent<Rigidbody2D>();
15.     }
16.  
17.     // Update is called once per frame
18.     void FixedUpdate()
19.     {
20.         direction = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Horizontal"));
21.         MoveChar(direction.x);
22.         //transform.Translate(Input.GetAxisRaw("Horizontal") * charSpeed * Time.deltaTime, 0f, 0f);
23.  
24.  
25.         if(Input.GetKeyDown(KeyCode.A) || Input.GetKeyDown(KeyCode.D))
26.         {
27.             flip = true;
28.         }
29.        
30.         if (flip == true && canFlip == true)
31.         {
32.             Flip();
33.         }
34.        
35.     }
36.     private void Update()
37.     {
38.         if (Input.GetKeyDown(KeyCode.W) && isGrounded)
39.         {
40.             rb.velocity = Vector2.up * jumpHeight;
41.             isGrounded = false;
42.         }
43.     }
44.  
45.     void MoveChar(float horizontal)
46.     {
47.         rb.AddForce(Vector2.right * horizontal * charSpeed);
48.  
49.         anim.SetFloat("magnitude", Mathf.Abs(rb.velocity.x));
50.  
51.  
52.        
53.         if(rb.velocity.x > maxSpeed)
54.         {
55.             rb.velocity = new Vector2(Mathf.Sign(rb.velocity.x) * maxSpeed, rb.velocity.y);
56.         }
57.     }
58.     void Flip()
59.     {
60.         if(facingRight == false)
61.         {
62.             Quaternion newRoatation = Quaternion.identity;
63.             newRoatation = Quaternion.Euler(0f,360f,0f);
64.             transform.rotation = Quaternion.Lerp(transform.rotation, newRoatation, 10f * Time.deltaTime);
65.             float angle = Quaternion.Angle(transform.rotation, newRoatation);
66.             Debug.Log(angle);
67.             if (angle == 0)
68.             {
69.                 Debug.Log("flip done");
70.                 transform.rotation = Quaternion.Euler(Vector3.zero);
71.                 facingRight = true;
72.                 flip = false;
73.             }
74.            
75.         }
76.         if (facingRight == true)
77.         {
78.             Quaternion newRoatation = Quaternion.Euler(0f, 180f, 0f);
79.             transform.rotation = Quaternion.Lerp(transform.rotation, newRoatation, 10f * Time.deltaTime);
80.  
81.             float angle = Quaternion.Angle(transform.rotation, newRoatation);
82.             if (angle == 0)
83.             {
84.                 Debug.Log("flip done");
85.                 transform.rotation = newRoatation;
86.                 facingRight = false;
87.                 flip = false;
88.             }
89.         }
90.     }

 

The

t

parameter in all

Lerp

functions isn't intended to be used with a "value-over-time", like other functions such as

Mathf.MoveTowards

would.

The value should be any number between 0 and 1, where:

• A value of 0 will return the exact rotation value in the first parameter.
• A value of 1 will return the exact rotation value in the second parameter.
• A value of 0.5 will return exactly the half-way point between the two rotations in both parameters.

You probably want to use Quaternion.RotateTowards instead, which does work with a "value-over-time".

 

Hey, Thanks a lot but it doesn't do what i want it to do. i fixed the problem by using elseif.

 

How did you fixed?