Question by ThatOneOwl · Jul 05, 2021 at 08:30 PM · c#rotation player slerp

Player's rotation gets stuck when pressing two movement keys together, Player's Rotation breaks when pressing two movement buttons together

So I'm making a simple game, where the player controls a car that can only turn around on the X-axis, while the textures of the world are constantly moving, so that it creates an effect that the car is moving forward while in fact it isn't. I also added a feature via Quaternion.Slerp that turns the car on the Y-axis, so that it would create an effect of an actual turning car, just like a real-life car would turn. The problem is that the Y-axis rotation can get stuck on a set angle if I press two buttons together, so it looks like the car is drifting non-stop. Obviously I don't want that, however I don't really know how to fix that. I've tried looking up an answer but i came up empty.

 public class PlayerController : MonoBehaviour
 {
     public Quaternion currentAngle;
     Quaternion targetAngleBegining = Quaternion.Euler(0f, 0f, 0f);
     Quaternion targetAngleEndRight = Quaternion.Euler(0f, 30.0f, 0f);
     Quaternion targetAngleEndLeft = Quaternion.Euler(0f, -30.0f, 0f);
 
     private float xTurnLimit = 8.0f;
     public float turnSpeed;
 
     private void Start()
     {
         currentAngle = targetAngleBegining;
     }
 
     private void Update()
     {
         MovePlayer();
         ClampPlayerTurn();
     }
 
     private void MovePlayer()
     {
         Vector3 rotationOrigin = Vector3.zero;
         float playerMovement = Input.GetAxis("Horizontal");
 
         transform.Translate(Vector3.right * playerMovement * turnSpeed * Time.deltaTime, Space.World);
 
         if(Input.GetKeyDown(KeyCode.D))
         {
             if(currentAngle.eulerAngles.y==targetAngleBegining.eulerAngles.y)
             {
                 currentAngle = targetAngleEndRight;
             }
             else
             {
                 currentAngle = targetAngleBegining;
             }
         }
 
         if(Input.GetKeyUp(KeyCode.D))
         {
             if (currentAngle.eulerAngles.y == targetAngleEndRight.eulerAngles.y)
             {
                 currentAngle = targetAngleBegining;
             }
             else
             {
                 currentAngle = targetAngleEndRight;
             }
         }
 
         if(Input.GetKeyDown(KeyCode.A))
         {
             if(currentAngle.eulerAngles.y==targetAngleBegining.eulerAngles.y)
             {
                 currentAngle = targetAngleEndLeft;
             }
             else
             {
                 currentAngle = targetAngleBegining;
             }
         }
 
         if (Input.GetKeyUp(KeyCode.A))
         {
             if (currentAngle.eulerAngles.y == targetAngleEndLeft.eulerAngles.y)
             {
                 currentAngle = targetAngleBegining;
             }
             else
             {
                 currentAngle = targetAngleEndLeft;
             }
         }
         this.transform.rotation = Quaternion.Slerp(this.transform.rotation, currentAngle, 0.010f);
     }
 
     private void ClampPlayerTurn()
     {
         if(transform.position.x < -xTurnLimit)
         {
             transform.position = new Vector3(-xTurnLimit, transform.position.y, transform.position.z);
         }
         else if(transform.position.x > xTurnLimit)
         {
             transform.position = new Vector3(xTurnLimit, transform.position.y, transform.position.z);
         }
     }
 }

Here's my code. It's not pretty, but it works somehow. I'm always open to suggestions and criticism. Thanks in advance if you've replaied to my question.

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