How to play my jump animation?

Unity Engine
1

So I wanna play my jump animation when the player is the air and when he presses space ONCE. It may sound simple but I can’t figure out how to do this at all. Here’s my code:

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

public class PlayerMovement : MonoBehaviour
{
    //private variables
    private Rigidbody2D rb;
    bool IsGrounded = false;

    //public variables
    public float speed;
    public float jumpForce;
    public Transform GroundChecker;
    public float GroundRadius;
    public LayerMask GroundLayer;
    public float fallMultiplier = 2.5f;
    public float lowJumpMultiplier = 2f;
    public SpriteRenderer playerSprite;
    public Animator playerAnimator;
  


    void Start()
    {
        Input.GetAxisRaw("Horizontal");
        rb = GetComponent<Rigidbody2D>();
    }

    void Update()
    {
        Move();
        Jump();
        CheckForGround();
        BetterJump();
        AnimateSprite();

    }

    void Move()
    {
        float xHor = Input.GetAxisRaw("Horizontal");
        float MoveDir = xHor * speed;
        rb.velocity = new Vector2(MoveDir, rb.velocity.y);
    }

    void Jump()
    {
        if (Input.GetKeyDown(KeyCode.Space) && IsGrounded)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
        }
    }

    void CheckForGround()
    {
        Collider2D collider = Physics2D.OverlapCircle(GroundChecker.position, GroundRadius, GroundLayer);

        if (collider != null)
        {
            IsGrounded = true;
        }
        else
        {
            IsGrounded = false;
        }
    }

    void BetterJump()
    {
        if (rb.velocity.y < 0)
        {
            rb.velocity += Vector2.up * Physics2D.gravity * (fallMultiplier - 1) * Time.deltaTime;
        }
        else if (rb.velocity.y > 0 && !Input.GetKey(KeyCode.Space))
        {
            rb.velocity += Vector2.up * Physics2D.gravity * (lowJumpMultiplier - 1) * Time.deltaTime;
        }
    }

    void AnimateSprite()
    {
        if (Input.GetKey(KeyCode.A))
        {
            playerSprite.flipX = true;
            playerAnimator.Play("Run");
        }
        else if (Input.GetKey(KeyCode.D))
        {
            playerSprite.flipX = false;
            playerAnimator.Play("Run");
        }
        else
        {
            playerAnimator.Play("Idle");
        }

       
      
    }
}

Please bear with my messy code.

2 
void AnimateSprite()
  {

      if(!isGrounded)
       {
              //Play anim is in the air
       }
       else
       {
             //Stop the anim
       }
       if (Input.GetKey(KeyCode.A))
       {
          playerSprite.flipX = true;
            playerAnimator.Play("Run");
       }
        else if (Input.GetKey(KeyCode.D))
        {
           playerSprite.flipX = false;
           playerAnimator.Play("Run");
       }
        else
       {
           playerAnimator.Play("Idle");
        }
    }

Or you can use a trigger statement in your animator

3

Cool this works. Thanks!. although I have a problem. How do I stop an animation? The jump animation stays on if I move as soon as I hit the floor after jumping. :confused:

4

In your animator panel you can set a trigger. When you active a trigger it became true for one cycle of animation . You have to make the transition between jump an idle state