角色旋转但只朝一个方向移动。 （团结 2d）

Question

I am unable to "move" the character towards the "left" direction. It moves only towards "right" direction when I press both, "a" AND "d". However, I am able to rotate the character to either direction according to the key pressed.

It is kind of moonwalking when I press the left key, I don't want my character to follow the footsteps of the late MJ.

private void FixedUpdate()
{

    //On X axis: -1f is left, 1f is right
    //Player Movement. Check for horizontal movement
    if (Input.GetAxisRaw("Horizontal") > 0.5f || Input.GetAxisRaw("Horizontal") < -0.5f)
    {
        if (Input.GetKey("left shift"))
        {
            moveSpeed = runSpeed;
        }
        else {
            moveSpeed = 5f;
        }
        transform.Translate(new Vector3(Input.GetAxisRaw("Horizontal") * moveSpeed * Time.deltaTime, 0f, 0f));
        if (rb2d.velocity.y == 0 && !isslashing)
            animator.Play("player_run");
        if (Input.GetAxisRaw("Horizontal") > 0.5f && !facingRight)
        {
            //If we're moving right but not facing right, flip the sprite and set     facingRight to true.
            Flip();
            facingRight = true;

        }
        else if (Input.GetAxisRaw("Horizontal") < 0.5f && facingRight)
        {
            //If we're moving left but not facing left, flip the sprite and set facingRight to false.
            Flip();
            facingRight = false;
        }


    }

    else
    {
        if (rb2d.velocity.y == 0 && !isslashing)
            animator.Play("idleanim");
    }
}


void Flip()

{

    //Switch the way the player is labelled as facing

    facingRight = !facingRight;

    transform.Rotate(0f, 180f, 0f);
}

Answer 1

Transform.Translate defaults to moving in local space and since you're rotating the transform, it's easiest if you just have it move in world space since you are already creating a world space vector.

You can do this by adding Space.World as an argument to Transform.Translate :

         Vector3 moveVector = Input.GetAxisRaw("Horizontal") * moveSpeed 
                              * Time.deltaTime * Vector3.right;
         transform.Translate(moveVector, Space.World);

By the way, you're already toggling the value of movingRight inside of Flip , so there is no reason to set it again after you call Flip . Might as well just call it and be done with those blocks:

        if (Input.GetAxisRaw("Horizontal") > 0.5f && !facingRight)
        {
            // If we're moving right but not facing right, flip the sprite
            // and set facingRight to true.
            Flip();
        }
        else if (Input.GetAxisRaw("Horizontal") < 0.5f && facingRight)
        {
            // If we're moving left but not facing left, flip the sprite 
            // and set facingRight to false.
            Flip();
        }