CODEWITHSUNDEEP
c#unity-game-engine
Rose
Rose

Reputation: 1

Unity 2D:Change the gravity scale of my player when I press a certain key?

I'm fairly new to unity and C# and I'm trying to understand how to change the gravity scale of my character when I press the space bar. When I debug it, it says that Rigidbody2D.gravityScale cannot be used as a method. Can someone explain why it brings this error and how to fix it?

public class PlayerMovement : MonoBehaviour {

    public float moveSpeed;
    private Rigidbody2D rb2d;
    public float addGrav;

    // Use this for initialization
    void Start () {
        rb2d = GetComponent<Rigidbody2D> ();
    }

    // Update is called once per frame
    void Update () {

        //Understanding::: If key pressed down, 
        //Transform - method that manipulates position of object
        //Translate moves transform in direction/distance of translation.
        //transform.Translate(translation);
        if (Input.GetKey (KeyCode.UpArrow)) 
        {
            transform.Translate (Vector2.up * moveSpeed * Time.deltaTime);
        }

        if (Input.GetKey (KeyCode.DownArrow)) 
        {
            transform.Translate (Vector2.down * moveSpeed * Time.deltaTime);
        }

        if (Input.GetKey (KeyCode.LeftArrow)) 
        {
            transform.Translate (Vector2.left * moveSpeed * Time.deltaTime);
        }

        if (Input.GetKey (KeyCode.RightArrow)) 
        {
            transform.Translate (Vector2.right * moveSpeed * Time.deltaTime);
        }

        if(Input.GetKey (KeyCode.Space))
        {
            rb2d.gravityScale (addGrav);
        }
    }
}

Upvotes: 0

Views: 11654

Answers (2)

Steven Fransisko
Steven Fransisko

Reputation: 56

It's because the compiler were reading it as a method since you used parentheses instead of equal sign. it should be like so.

rb2d.gravityScale = addGrav;

Upvotes: 2

Endrik
Endrik

Reputation: 606

rb2d.gravityScale is not a method, it's a field that you can assign value to.

use this

rb2d.gravityScale = addGrav; //to asign
//other example
rb2d.gravityScale += addGrav; //to add
rb2d.gravityScale -= addGrav; //to substract

Upvotes: 5

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