PlayerController.cs

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

public class PlayerController : Physicsobject
{
    public float maxSpeed = 7;
    public float jumpTakeOffSpeed = 7;

    private SpriteRenderer spriteRenderer;
    private Animator animator;

    public GameObject fly;
    public Transform jet;

    public int fuel = 25;
    public Text fuelText;

    public bool facingRight = true;

    // Use this for initialization
    void Start()
    {
        fuel = 25;
        
        SetfuelText();
       
    }

    void SetfuelText()
    {
        fuelText.text = "JETPAK: " + fuel.ToString(); //sets the coresponding text to the following
    }

 

    void Awake()
    {
        spriteRenderer = GetComponent<SpriteRenderer>(); //gets the sprite renderer
        animator = GetComponent<Animator>(); //gets the animator
    }

    protected override void ComputeVelocity()
    {
        Vector2 move = Vector2.zero;

        move.x = Input.GetAxis("Horizontal"); //gives the player the velocity needed to jump

        if (Input.GetKeyDown("w")) //lets the player jump
        {
            if (fuel >= 1)//checks if there is fuel
            {
                velocity.y = jumpTakeOffSpeed;
                Instantiate(fly, jet.position, jet.rotation);
                fuel = fuel - 1;
                fuelText.text = "JETPAK: " + fuel.ToString();
            }

        }

        else if (Input.GetKeyUp("w")) //lets player cancel jump
        {
            if (velocity.y > 0)
            {
                velocity.y = velocity.y * 0.5f;


            }
        }

        if (Input.GetKeyDown("s") && fuel <= 0)//refills fuel if at 0 
        {
    
            fuel = fuel + 25;
            fuelText.text = "JETPAK: " + fuel.ToString();
        }





        if (move.x < 0 && facingRight) Flip(); //flips the player right
        if (move.x > 0 && !facingRight) Flip();//flips the player left


        void Flip()
        {
            facingRight = !facingRight;
            transform.Rotate(Vector2.up * 180);
            //flips the player 
        }
        animator.SetBool("grounded", grounded); //plays the jump animation in the animator
        animator.SetFloat("velocityX", Mathf.Abs(velocity.x) / maxSpeed); //plays the running animation in the animator

      

        targetVelocity = move * maxSpeed; //allows the player to move
    }

   

    
}