Nsryjdtyk

I am trying to code a platforming game as right now all my character model can do is either jump infinitely or doesn't jump at all. I want to use a for loop so my character can jump one when grounded and once more when he is in the air but I cant figure out how to make it stop after double jumping once and resetting when the character hits the floor again. please help!!

public class SimplePlatformController : MonoBehaviour

{



    [HideInInspector]

    public bool facingRight = true;

    [HideInInspector]

    public bool jump = false;

    public float moveForce = 365f;

    public float maxSpeed = 5f;

    public float jumpForce = 1000f;

    public Transform groundCheck;









    private bool grounded = false;

    private Animator anim;

    private Rigidbody2D rb2d;





    // Use this for initialization

    void Awake()

    {

        anim = GetComponent<Animator>();

        rb2d = GetComponent<Rigidbody2D>();                        

    }



    // Update is called once per frame

    void Update()

    {

        for (int i = 0; i <= 1; i++) 

       {

            grounded = Physics2D.Linecast(transform.position, groundCheck.position, 1 << LayerMask.NameToLayer("Ground"));



            if (Input.GetButtonDown("Jump") && grounded)

            {

                i = 0;  

                jump = true;



            }



            if (Input.GetButtonDown("Jump") && !grounded)

            {

                jump = true;

                i = i + 1;

            }



        }

    }



    void FixedUpdate()

    {

        float h = Input.GetAxis("Horizontal");



        anim.SetFloat("Speed", Mathf.Abs(h));



        if (h * rb2d.velocity.x < maxSpeed)

            rb2d.AddForce(Vector2.right * h * moveForce);



        if (Mathf.Abs(rb2d.velocity.x) > maxSpeed)

            rb2d.velocity = new Vector2(Mathf.Sign(rb2d.velocity.x) * maxSpeed, rb2d.velocity.y);



        if (h > 0 && !facingRight)

            Flip();

        else if (h < 0 && facingRight)

            Flip();



        if (jump)

        {

            anim.SetTrigger("Jump");

            rb2d.AddForce(new Vector2(0f, jumpForce));

            jump = false;

        }

    }





    void Flip()

    {

        facingRight = !facingRight;

        Vector3 theScale = transform.localScale;

        theScale.x *= -1;

        transform.localScale = theScale;

    }



}

A for loop is inappropriate for this, because you only want to advance the counter if you jump. and you need to leave the loop when it's time for the frame to end. You could in theory make it happen with a while loop in a Coroutine but that is unnecessarily complicated.

A better alternative is to just keep a counter as a class field and update it appropriately, according to the double jump state.

Also, since the if statement is being reached on every frame, you have to check if you have any more air jumps before you double jump.

If you want to be able to double-jump after you simply walk off a platform, you'll want to set the jump counter to 0 anytime grounded is set to be true.

Combining all of these suggestions might look like this:

public class SimplePlatformController : MonoBehaviour

{



    // ...



    private int airJumpCount = 0; // Add this counter



    // ...



    // Update is called once per frame

    void Update()

    {

        grounded = Physics2D.Linecast(

                transform.position, groundCheck.position, 

                1 << LayerMask.NameToLayer("Ground"));



        if (grounded) airJumpCount = 0; // reset the counter when grounded



        if (Input.GetButtonDown("Jump") && grounded)

        {

            jump = true;  

        }



        // Only enter the air jump block if we still have more air jumps

        if ( Input.GetButtonDown("Jump") && !grounded && airJumpCount < 1) 

        {

            airJumpCount++;

            jump = true;  

        }

    }



    // ...

}