Double Jumping in C#

Questions & Answers
1

Hey, I know this is posted a lot, but I’m having a problem with my double-jump script. Is anyone able to help?

As it stands, the character sprite simply moves vertically without having an actual double jump.

Note: there are a lot of variables because I intend to allow quad-jumping eventually.

Thanks in advance!

    public int maxjumps = 2;
int jumps;
public float movespeed = 2.0f;
private Rigidbody2D Player_Collider;
public bool jump1;
public bool jump2 = true;
public bool jump3 = true;
public bool jump4 = true;

void Awake()
{
	jumps = maxjumps;
}

void Update ()
{
	if(Input.GetKey(KeyCode.D))
	{
		transform.Translate (new Vector3 (1, 0) * movespeed * Time.deltaTime);
	}
	if(Input.GetKey(KeyCode.A))
	{
		transform.Translate (new Vector3 (-1, 0) * movespeed * Time.deltaTime);
	}
	if(Input.GetKey(KeyCode.Space) || Input.GetKey(KeyCode.W))
	{
		Jump ();
	}
}
	void Jump()
{
	if (jumps == 0)
	{
		return;
	}
	if (jump1 == false)
	{
		GoUp ();
		jump1 = true;
		jump2 = false;
	}
	if (jump2 == false)
	{
		GoUp ();
		jump2 = true;
		jump3 = false;
	}
	if (jump3 == false)
	{
		GoUp ();
		jump3 = true;
		jump4 = false;
	}
	if (jump4 == false)
	{
		GoUp ();
		jump4 = true;
	}
}
	
void GoUp()
{
	GetComponent<Rigidbody2D> ().AddForce (new Vector2 (0, 5), ForceMode2D.Impulse);
	jumps = jumps - 1;
}

void OnCollisionEnter2D(Collision2D collide)
{
	if(collide.gameObject.tag == "Ground")
	{
		jump1 = false;
		jump2 = true;
		jump3 = true;
		jump4 = true;
	}
}

}

2

@NoseKills I want to thank you and apologize. I’d figured out how to code it correctly (which will be below for any who need help with this), but I couldn’t delete the question. So, thank you for your help, and I’m sorry for the trouble.

Here’s the new code:

public int maxjumps = 2;
int jumps;
float jumpforce = 5f;

void Update()
{
    if(Input.GetKeyDown(KeyCode.Space) || Input.GetKeyDown(KeyCode.W))
	{
		Jump ();
	}
}
	void Jump()
{
	if (jumps > 0)
	{
		gameObject.GetComponent<Rigidbody2D> ().AddForce (new Vector2 (0, jumpforce), ForceMode2D.Impulse);
		grounded = false;
		jumps = jumps - 1;
	}
	if (jumps == 0)
	{
		return;
	}
}

void OnCollisionEnter2D(Collision2D collide)
{
	if(collide.gameObject.tag == "Ground")
	{
		jumps = maxjumps;
		grounded = true;
		movespeed = 2.0F;
3

By quad I presume you mean 4 jumps (?) It doesn’t really matter though how many times you want to jump. I would set 2 integers for the jumps (both public):

public int maxAmountOfJumps = 2;
            public int Jumped = 0;
            void Awake()
            {
                //Not sure why you need this to be honest.
            }


            void Update()
            {
                
                if (Input.GetKey(KeyCode.Space) || Input.GetKey(KeyCode.W))
	            {
		            Jump();
	            }
            }
            
            //Now add Jump function
            
            void Jump()
            {
                if (Jumped <= maxAmountOfJumps)
	            {
		            GoUp();
	            }
                else
	            {
                    return;
	            }
            }

            void GoUp()
            {
                //Insert Jump Code.
                Jumped +=1;
            }

            void OnCollisionEnter2D(Collision2D collide)
            {
                
                if (collide.gameObject.tag == "Ground")
	            {
		           Jumped = 0; 
	            }
            }

So every time you land you reset Jumped to 0 that way you can only jump 2 times and no more.

Hopefully if this doesn’t fix your problem it will at least give you some ideas you can work with.

EDIT:
Sorry by the way I made this script in visual studio not via Unity so copying and pasting might not work very well.