My Rigidbody FPS controller is falling very slow, please help!

Question

My movement script:

How it looks for me: [Youtube][1] BTW, my gravity is set to -19,62.

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class PlayerMovement : MonoBehaviour { float playerHeight = 2f;

 [SerializeField] Transform orientation;

 [Header("Movement")]
 [SerializeField] float moveSpeed = 6f;
 [SerializeField] float airMultiplier = 0.4f;
 float movementMultiplier = 10f;

 [Header("Sprinting")]
 [SerializeField] float walkSpeed = 8f;
 [SerializeField] float sprintSpeed = 10f;
 [SerializeField] float acceleration = 10f;

 [Header("Jumping")]
 public float jumpForce = 10f;

 [Header("Keybinds")]
 [SerializeField] KeyCode jumpKey = KeyCode.Space;
 [SerializeField] KeyCode sprintKey = KeyCode.LeftShift;

 [Header("Drag")]
 [SerializeField] float groundDrag = 6f;
 [SerializeField] float airDrag = 0f;

 float horizontalMovement;
 float verticalMovement;

 [Header("Ground Detection")]
 [SerializeField] Transform groundCheck;
 [SerializeField] LayerMask groundMask;
 [SerializeField] float groundDistance = 0.2f;
 public bool isGrounded { get; private set; }

 Vector3 moveDirection;
 Vector3 slopeMoveDirection;

 Rigidbody rb;

 RaycastHit slopeHit;

 private bool OnSlope()
 {
     if (Physics.Raycast(transform.position, Vector3.down, out slopeHit, playerHeight / 2 + 0.5f))
     {
         if (slopeHit.normal != Vector3.up)
         {
             return true;
         }
         else
         {
             return false;
         }
     }
     return false;
 }

 private void Start()
 {
     rb = GetComponent<Rigidbody>();
     rb.freezeRotation = true;
 }

 private void Update()
 {
     isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

     MyInput();
     ControlDrag();
     ControlSpeed();

     if (Input.GetKeyDown(jumpKey) && isGrounded)
     {
         Jump();
     }

     slopeMoveDirection = Vector3.ProjectOnPlane(moveDirection, slopeHit.normal);
 }

 void MyInput()
 {
     horizontalMovement = Input.GetAxisRaw("Horizontal");
     verticalMovement = Input.GetAxisRaw("Vertical");

     moveDirection = orientation.forward * verticalMovement + orientation.right * horizontalMovement;
 }

 void Jump()
 {
     if (isGrounded)
     {
         rb.velocity = new Vector3(rb.velocity.x, 0, rb.velocity.z);
         rb.AddForce(transform.up * jumpForce, ForceMode.Impulse);
     }
 }

 void ControlSpeed()
 {
     if (Input.GetKey(sprintKey) && isGrounded)
     {
         moveSpeed = Mathf.Lerp(moveSpeed, sprintSpeed, acceleration * Time.deltaTime);
     }
     else
     {
         moveSpeed = Mathf.Lerp(moveSpeed, walkSpeed, acceleration * Time.deltaTime);
     }
 }

 void ControlDrag()
 {
     if (isGrounded)
     {
         rb.drag = groundDrag;
     }
     else
     {
         rb.drag = airDrag;
     }
 }

 private void FixedUpdate()
 {
     MovePlayer();
 }

 void MovePlayer()
 {
     if (isGrounded && !OnSlope())
     {
         rb.AddForce(moveDirection.normalized * moveSpeed * movementMultiplier, ForceMode.Acceleration);
     }
     else if (isGrounded && OnSlope())
     {
         rb.AddForce(slopeMoveDirection.normalized * moveSpeed * movementMultiplier, ForceMode.Acceleration);
     }
     else if (!isGrounded)
     {
         rb.AddForce(moveDirection.normalized * moveSpeed * movementMultiplier * airMultiplier, ForceMode.Acceleration);
     }
 }

}

Answer 1

Best Answer

Answer by DenisIsDenis · Jul 17, 2021 at 02:10 PM

In the settings of your Rigidbody, you set the Drag equal to 2. In fact, this slows down the fall. Set it to zero and the drop will be faster.

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DenisIsDenis · Jul 18, 2021 at 03:21 AM 0

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It did work but now if I jump and hold down "W" i fly forward.

@MMKnight, I tested your script and found out the reason. You limited the player's speed through drag, but when you made a drag equal to 0 in the air, nothing prevented the player's infinite acceleration, he could move at any speed.

I suggest limiting the player's movement speed manually, just change your FixedUpdate() to the following lines:

 private void FixedUpdate ()
 {
     MovePlayer ();

     float maxSpeed = 7;             // Maximum speed (better to make it global)
     Vector3 velocity = rb.velocity; // Create a velocity vector with which we will work
     velocity.y = 0;                // Zero the y-axis because we want to keep the falling speed.
     velocity = Vector3.ClampMagnitude(velocity, maxSpeed); // Limiting the speed of movement 
     velocity.y = rb.velocity.y;     // Returning the y-axis value
     rb.velocity = velocity;         // And change the velocity of Rigidbody
 }

(Note: if the player's movement occurs with a little twitching, then enable motion interpolation in the settings of your Rigidbody).

MMKnight · Jul 18, 2021 at 09:48 AM 0

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Thank you so much!

Answer 2

Answer by b1gry4n · Jul 17, 2021 at 02:07 PM

you are setting your air drag to 2f, thats pretty high. try 0.01f and go up from there

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MMKnight · Jul 17, 2021 at 06:43 PM 1

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It did work but now if I jump and hold down "W" i fly forward.

My Rigidbody FPS controller is falling very slow, please help!

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