Acceleration and deceleration is not working as indented on slopes

Questions & Answers
, ,
1

Howdy folks (I’m new to Unity c:), I am trying to have some movement working properly for both slopes and grounded movement!
I have tried setting current speed as a separate variable that is then applied to the movement input, slope angle, and gravity.
However it’s causing deceleration to not function, as there is a sudden stop, when it should be stopping gradually. And another situation such as when the player is on a slope will slowly climb up as if current speed is still building up, when it should be seamlessly carrying the momentum without hitches.
https://gdl.space/odajorabag.cs

 private void CalculateSpeed()

 {
     //General acceleration before anything else.
     #region Calculate Acceleration and Deceleration
     if (Mathf.Abs(moveInput.x) > 0f)
     {
         
         if (currentSpeed < maxSpeed) 
         {
             currentSpeed += walkAcceleration * Time.deltaTime;//walkAcceleration is your adjustment for walk acceleration.
         }
         
     }
     else
     {
         currentSpeed -= walkDeceleration * Time.deltaTime; //walkDeceleration slows the player down.
         currentSpeed = Mathf.Max(currentSpeed, 0f);
         currentSpeed = Mathf.Clamp(currentSpeed, -maxSpeed, maxSpeed);

     }

     #endregion

     if (IsGrounded && !_onSlope)
     {
         Debug.Log("Grounded, but not on slope!");

         //is Player not moving?
         if (Mathf.Approximately(moveInput.x, 0))
         {
             newPlayerVelocity.Set(walkSpeed * moveInput.x * currentSpeed, playerRB.velocity.y);
             //stateManager.CurrentState = PlayerStateManager.PlayerState.Idle;
         }
         else
         {
             newPlayerVelocity.Set(walkSpeed * moveInput.x * currentSpeed, playerRB.velocity.y);
         }

         newPlayerVelocity.x = Mathf.Clamp(newPlayerVelocity.x, -maxSpeed, maxSpeed);
         playerRB.velocity = new Vector2(newPlayerVelocity.x, newPlayerVelocity.y - gravityScale);
     }

     //Should move with kinematic assistance on slopes by detecting if slope is approximately 45 or 315.
     else if (IsGrounded && _onSlope) //Checks if is grounded and is on a slope.
     {
         Debug.Log("Grounded on slope!");

         //is Player not moving?
         if (Mathf.Approximately(moveInput.x, 0))
         {
             newPlayerVelocity.Set(_slopePerp.x * -moveInput.x * currentSpeed,_slopePerp.y * -moveInput.x * currentSpeed);
             //stateManager.CurrentState = PlayerStateManager.PlayerState.Idle;
         }
         else
         {
             newPlayerVelocity.Set(_slopePerp.x * -moveInput.x * currentSpeed,_slopePerp.y * -moveInput.x * currentSpeed);
         }

         newPlayerVelocity.x = Mathf.Clamp(newPlayerVelocity.x, -maxSpeed, maxSpeed);
         playerRB.velocity = new Vector2(newPlayerVelocity.x, newPlayerVelocity.y - gravityScale);
     }

     // Airborne movement behavior.
     else if (!IsGrounded)
     {
         Debug.Log("Airborne!");

         //is Player not moving?
         if (Mathf.Approximately(moveInput.x, 0))
         {

             //stateManager.CurrentState = PlayerStateManager.PlayerState.Idle;
         }
         else
         {
             if (_onSlope)
             {
                 newPlayerVelocity.Set(_slopePerp.x * -moveInput.x * walkAcceleration, walkSpeed * _slopePerp.y * -moveInput.x * walkAcceleration);
             }
             newPlayerVelocity.Set(moveInput.x, playerRB.velocity.y);
         }
         playerRB.velocity = new Vector2(newPlayerVelocity.x, playerRB.velocity.y - gravityScale); 
     }
 }