My player not Jumping while moving right

I made a Player Controller for my game. My character can jump while moving left but can’ t jump while moving right. Here is the code

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class PlayerMovement : MonoBehaviour
{
private float movementInputDirection;
private bool isFacingRight = true;
private bool isWalking;
private bool isGrounded;
private bool canJump;
private Rigidbody2D rb;
private Animator anim;
public float movementSpeed = 10.0f;
public float jumpForce = 16.0f;
public float groundCheckRadius;
public Transform groundCheck;
public LayerMask whatIsGround;
// Start is called before the first frame update
void Start()
{
rb = GetComponent<Rigidbody2D>();
anim = GetComponent<Animator>();
}
// Update is called once per frame
void Update()
{
CheckInput();
CheckMovementDirection();
UpdateAnimations();
CheckIfCanJump();
}
private void FixedUpdate() 
{
ApplyMovement();
CheckSurroundings();
}
private void CheckSurroundings()
{
isGrounded = Physics2D.OverlapCircle(groundCheck.position, groundCheckRadius, whatIsGround);
}
private void CheckIfCanJump()
{
if (isGrounded && rb.velocity.y <= 0)
{
canJump = true;
} 
else
{
canJump = false;
}
}
private void CheckMovementDirection()
{
if(isFacingRight && movementInputDirection < 0)
{
Flip();
}
else if(!isFacingRight && movementInputDirection > 0)
{
Flip();
}
if(rb.velocity.x != 0)
{
isWalking = true;
}
else
{
isWalking = false;
}
}
private void UpdateAnimations()
{
anim.SetBool("isWalking", isWalking);
}
private void CheckInput()
{
movementInputDirection = Input.GetAxisRaw("Horizontal");
if (Input.GetButtonDown("Jump"))
{
Jump(); 
}
}
private void Jump()
{
if (canJump)
{
rb.velocity = new Vector2(rb.velocity.x, jumpForce);
}

}
private void ApplyMovement()
{
rb.velocity = new Vector2(movementSpeed * movementInputDirection, rb.velocity.y);
}
private void Flip()
{
isFacingRight = !isFacingRight;
transform.Rotate(0.0f, 180.0f, 0.0f);
}
private void OnDrawGizmos()
{
Gizmos.DrawWireSphere(groundCheck.position, groundCheckRadius);
}
}

Is it this?

Keyboard rollover, jammed keys, bad key combinations:

If you think it is not the above, then simply prove it isn’t by printing the actual key inputs with some test code.

Time to start debugging! Here is how you can begin your exciting new debugging adventures:

You must find a way to get the information you need in order to reason about what the problem is.

Once you understand what the problem is, you may begin to reason about a solution to the problem.

What is often happening in these cases is one of the following:

  • the code you think is executing is not actually executing at all
  • the code is executing far EARLIER or LATER than you think
  • the code is executing far LESS OFTEN than you think
  • the code is executing far MORE OFTEN than you think
  • the code is executing on another GameObject than you think it is
  • you’re getting an error or warning and you haven’t noticed it in the console window

To help gain more insight into your problem, I recommend liberally sprinkling Debug.Log() statements through your code to display information in realtime.

Doing this should help you answer these types of questions:

  • is this code even running? which parts are running? how often does it run? what order does it run in?
  • what are the names of the GameObjects or Components involved?
  • what are the values of the variables involved? Are they initialized? Are the values reasonable?
  • are you meeting ALL the requirements to receive callbacks such as triggers / colliders (review the documentation)

Knowing this information will help you reason about the behavior you are seeing.

You can also supply a second argument to Debug.Log() and when you click the message, it will highlight the object in scene, such as Debug.Log("Problem!",this);

If your problem would benefit from in-scene or in-game visualization, Debug.DrawRay() or Debug.DrawLine() can help you visualize things like rays (used in raycasting) or distances.

You can also call Debug.Break() to pause the Editor when certain interesting pieces of code run, and then study the scene manually, looking for all the parts, where they are, what scripts are on them, etc.

You can also call GameObject.CreatePrimitive() to emplace debug-marker-ish objects in the scene at runtime.

You could also just display various important quantities in UI Text elements to watch them change as you play the game.

Visit Google for how to see console output from builds. If you are running a mobile device you can also view the console output. Google for how on your particular mobile target, such as this answer for iOS: How To - Capturing Device Logs on iOS or this answer for Android: How To - Capturing Device Logs on Android

If you are working in VR, it might be useful to make your on onscreen log output, or integrate one from the asset store, so you can see what is happening as you operate your software.

Another useful approach is to temporarily strip out everything besides what is necessary to prove your issue. This can simplify and isolate compounding effects of other items in your scene or prefab.

If your problem is with OnCollision-type functions, print the name of what is passed in!

Here’s an example of putting in a laser-focused Debug.Log() and how that can save you a TON of time wallowing around speculating what might be going wrong:

If you are looking for how to attach an actual debugger to Unity: Unity - Manual: Debugging C# code in Unity

“When in doubt, print it out!™” - Kurt Dekker (and many others)

Note: the print() function is an alias for Debug.Log() provided by the MonoBehaviour class.

If you post a code snippet, ALWAYS USE CODE TAGS:

How to use code tags: Using code tags properly

  • Do not TALK about code without posting it.
  • Do NOT post unformatted code. (use the CODE formatting tag, not the ICODE tag)
  • Do NOT retype code. Use copy/paste properly using code tags.
  • Do NOT post screenshots of code.
  • Do NOT post photographs of code.
  • ONLY post the relevant code, and then refer to it in your discussion.