AddForce Jump Problem

@President I'm not completely sure but I think it is because you have "Input.GetKeyDown" so it checks to see if the key was just pressed. Maybe try using "GetKey" Instead and have a timer countdown to see if you should start to fall. public float jumpTime; float currentJumpTime; void Start() { currentJumpTime = JumpTime; } void UpdateJump() { if(Input.GetKey(KeyCode.Space) && currentJumpTime <= 0) { //addForce //set trigger currentJumpTime = JumpTime; } else { currentJumpTime-= Time.deltaTime; } } Hopefully this helps!

Don't use AddForce, use CharacterController.Move instead. If you have a CharacterController, you shouldn't have a rigidbody at all. Instead, just keep track of what your vertical velocity should be each frame and add that to a CharacterController.Move call.

I have updated my code and this one works, except now I have one problem. When I click "Space" key, it sometimes jumps and sometimes it doesn't. What might be the issue? using UnityEngine; using System.Collections;

 [RequireComponent( typeof( CharacterController ) )]
 public class RPGMovement : MonoBehaviour
 {
     public float ForwardSpeed = 8f;
     public float BackwardSpeed = 4f;
     public float StrafeSpeed = 5f;
     public float RotateSpeed = 110f;
 
     private CharacterController m_CharacterController;
     Vector3 m_LastPosition;
     Animator m_Animator;
     PhotonView m_PhotonView;
     PhotonTransformView m_TransformView;
 
     float m_AnimatorSpeed;
     Vector3 m_CurrentMovement;
     float m_CurrentTurnSpeed;
 
     private Vector3 playerVelocity;
     private bool groundedPlayer;
     private float jumpHeight = 0.9f;
     private float gravityValue = -20.81f;
 
     void Start()
     {
         m_CharacterController = gameObject.GetComponent<CharacterController>();
         m_Animator = GetComponent<Animator>();
         m_PhotonView = GetComponent<PhotonView>();
         m_TransformView = GetComponent<PhotonTransformView>();
     }
 
     void Update()
     {
         if( m_PhotonView.isMine == true )
         {
             ResetSpeedValues();
 
             UpdateRotateMovement();
 
             UpdateForwardMovement();
             UpdateBackwardMovement();
             UpdateStrafeMovement();
             UpdateJump();
 
             MoveCharacterController();
 
 
             ApplySynchronizedValues();
         }
         UpdateAnimation();
     }
 
     void UpdateAnimation()
     {
         Vector3 movementVector = transform.position - m_LastPosition;
 
         float speed = Vector3.Dot( movementVector.normalized, transform.forward );
         float direction = Vector3.Dot( movementVector.normalized, transform.right );
 
         if ( Mathf.Abs( speed ) < 0.2f )
         {
             speed = 0f;
         }
 
         if( speed > 0.6f )
         {
             speed = 1f;
             direction = 0f;
         }
 
         if( speed >= 0f )
         {
             if( Mathf.Abs( direction ) > 0.7f )
             {
                 speed = 1f;
             }
         }
 
         m_AnimatorSpeed = Mathf.MoveTowards( m_AnimatorSpeed, speed, Time.deltaTime * 5f );
 
         m_Animator.SetFloat( "Speed", m_AnimatorSpeed );
         m_Animator.SetFloat( "Direction", direction );
 
         m_LastPosition = transform.position;
     }
 
     void ResetSpeedValues()
     {
         m_CurrentMovement = Vector3.zero;
         m_CurrentTurnSpeed = 0;
     }
 
     void ApplySynchronizedValues()
     {
         m_TransformView.SetSynchronizedValues( m_CurrentMovement, m_CurrentTurnSpeed );
     }
 
 
 
     void MoveCharacterController()
     {
         m_CharacterController.Move( m_CurrentMovement * Time.deltaTime );
     }
 
     void UpdateForwardMovement()
     {
         if( Input.GetKey( KeyCode.W ) || Input.GetAxisRaw("Vertical") > 0.1f )
         {
             m_CurrentMovement = transform.forward * ForwardSpeed;
         }
     }
 
     void UpdateBackwardMovement()
     {
         if( Input.GetKey( KeyCode.S ) || Input.GetAxisRaw("Vertical") < -0.1f )
         {
             m_CurrentMovement = -transform.forward * BackwardSpeed;
         }
     }
 
     void UpdateStrafeMovement()
     {
         if( Input.GetKey( KeyCode.Q ) == true )
         {
             m_CurrentMovement = -transform.right * StrafeSpeed;
         }
 
         if( Input.GetKey( KeyCode.E ) == true )
         {
             m_CurrentMovement = transform.right * StrafeSpeed;
         }
     }
 
     void UpdateRotateMovement()
     {
         if( Input.GetKey( KeyCode.A ) || Input.GetAxisRaw("Horizontal") < -0.1f )
         {
             m_CurrentTurnSpeed = -RotateSpeed;
             transform.Rotate(0.0f, -RotateSpeed * Time.deltaTime, 0.0f);
         }
 
         if( Input.GetKey( KeyCode.D ) || Input.GetAxisRaw("Horizontal") > 0.1f )
         {
             m_CurrentTurnSpeed = RotateSpeed;
             transform.Rotate(0.0f, RotateSpeed * Time.deltaTime, 0.0f);
         }
     }
 
     void UpdateJump()
     {
 
         groundedPlayer = m_CharacterController.isGrounded;
         if (groundedPlayer && playerVelocity.y < 0)
         {
             playerVelocity.y = 0f;
         }
 
         // Changes the height position of the player..
         if (Input.GetButtonDown("Jump") && groundedPlayer)
         {
             playerVelocity.y += Mathf.Sqrt(jumpHeight * -3.0f * gravityValue);
             m_Animator.SetTrigger("Jump");
         }
 
         playerVelocity.y += gravityValue * Time.deltaTime;
         m_CharacterController.Move(playerVelocity * Time.deltaTime);
     }
 }