C＃如何在不使用参数的情况下从另一个方法中使用该方法的类中获取数据

Question

I have a static Player class that I have a Jump method in it. It takes a Rigidbody2D parameter so I have to call it by typing

Player.Jump(GetComponent<Rigidbody2D>);

but I want to get the Rigidbody2D component in the Jump method and call it by typing

Player.Jump();

Is there any way to do this? Can I get the Rigidbody2D component from the Jump method?

My Jump code:

    /// <summary>
    /// Makes the given Rigidbody2D jump.
    /// </summary>
    public static void Jump(Rigidbody2D rb)
    {
        rb.velocity = new Vector2(rb.velocity.x, 0);
        rb.AddForce(new Vector2(0, JumpHeight));
    }

Class that I'm using the Jump method

if (Player.CanMove)
    {
        Player.Move(rb);

        if (Input.GetKeyDown(KeyCode.Space) && canJump)
        {
            if (tempMaxJumps > 0)
            {
                Player.Jump(rb);
                tempMaxJumps--;
            }
            else
            {
                canJump = false;
            }
        }
    }

Answer 1

If you really need the player class to stay a static class, i suggest simply adding a

public static RigidBody2D Rigidbody;

to which you can assign to once in the Start of the class calling Jump

However this whole question seems like bad practice, a Player script should generally be inherit from MonoBehaviour and be attached to the player GameObject in your scene. Then inside this Player script you can check for input and have a Jump-method

Answer 2

You could create a static member which would have a reference to the rigidbody and set the reference at some point prior to calling Jump, but that's a bad idea.

By using the static class to make the player object jump, you are breaking abstraction. Now you have code outside of your player object that is influencing the player, leading to code spaghetti.

Answer 3

Like this?

public static class Player
{
    public static Rigidbody2D Jump()
    {
        return new Rigidbody2D();
    }
}