I have a character controller movement where the player can walk, run and jump. However, I facing an issue with the jumping. When jumping while walking, the jump speed looks good. But when jumping while running, the jump speed is too slow compared to the run speed. How can I fix this?

Here is my code:

public class PlayerMovement : MonoBehaviour
{
    [SerializeField] Transform playerCamera = null;
    [SerializeField] float mouseSensitivity = 3.5f;
    [SerializeField] float walkSpeed = 10.0f;
    [SerializeField] float RunSpeed = 12.0f;
    [SerializeField] float gravity = 9.81f;
    [SerializeField] bool lockCursor = true;
    [SerializeField] [Range(0.0f, 0.5f)] float moveSmoothTime = 0.3f;
    public float jumpHeight = 3f;

    Vector3 velocity;
    public float verticalVelocity;
    float cameraPitch = 0.0f;

    CharacterController controller = null;
    Vector2 currentDir = Vector2.zero;
    Vector2 currentDirVelocity = Vector2.zero;
    Vector2 currentMouseDelta = Vector2.zero;
    Vector2 currentMouseDeltaVelocity = Vector2.zero;

    void Start()
    {
        controller = GetComponent<CharacterController>();
        if (lockCursor)
        {
            Cursor.lockState = CursorLockMode.Locked;
            Cursor.visible = false;
        }
    }
    void Update()
    {
        UpdateMouseLook();
        UpdateMovement();
    }
    void UpdateMouseLook()
    {
        Vector2 targetMouseDelta = new Vector2(Input.GetAxis("Mouse X"), Input.GetAxis("Mouse Y"));

        currentMouseDelta = Vector2.SmoothDamp(currentMouseDelta, targetMouseDelta, ref currentMouseDeltaVelocity, mouseSmoothTime);

        cameraPitch -= currentMouseDelta.y * mouseSensitivity;

        cameraPitch = Mathf.Clamp(cameraPitch, -90.0f, 90.0f);

        playerCamera.localEulerAngles = Vector3.right * cameraPitch;

        transform.Rotate(Vector3.up * currentMouseDelta.x * mouseSensitivity);
    }
    void UpdateMovement()
    {
        Vector2 targetDir = new Vector2(Input.GetAxisRaw("Horizontal"), Input.GetAxisRaw("Vertical"));
        targetDir.Normalize();

        currentDir = Vector2.SmoothDamp(currentDir, targetDir, ref currentDirVelocity, moveSmoothTime);

        if (controller.isGrounded)
            velocity.y = 0.0f;
        velocity  = (velocity.y < 0 ? Physics.gravity * 2 : Physics.gravity) * Time.deltaTime;

        velocity = (transform.forward * currentDir.y   transform.right * currentDir.x) * walkSpeed   Vector3.up * velocity.y;
          if (Input.GetKeyDown(KeyCode.J) && controller.isGrounded)
        {
           velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
           velocity  = (velocity.y < 0 ? Physics.gravity * 2 : Physics.gravity) * Time.deltaTime;
        }
        controller.Move(velocity * Time.deltaTime);
        if ((Input.GetKey("left shift") || Input.GetKey("right shift")) && controller.isGrounded && !Input.GetKey(KeyCode.S) && !Input.GetKey(KeyCode.DownArrow))
        {
            velocity = (transform.forward * currentDir.y   transform.right * currentDir.x) * RunSpeed   Vector3.up * velocity.y;
            controller.Move(velocity * Time.deltaTime);
        }

      
    

}

CodePudding user response：

When you are using character controller you need to do all the calculations for all the situations. To get the result you are looking for you can do a calculation beetween jump and walking speed.

Another way is to use Rigid body (lock rotations) and add forces for jump and move.

both examples here:

If your character is greater than 2, adjust the length of the ground detection raycast accordingly because the controller.isGrounded condition does not always work.