平稳地包裹刚体

Question

I'm wanting my player to move to the left when the player hits the left of the screen. Right now, my player only moves as and when I hold down my mouse button. What I'm really wanting is for him to continually move to the left until he hits the target position when I press the screen once.

Can someone please tell me what I'm missing from my code to allow this to happen?

void FixedUpdate() 
{

    if(Input.GetMouseButtonDown(0))
    {
        if(Input.mousePosition.x < (Screen.width*2)/3 && Input.mousePosition.y > Screen.height/3)
        {
            if(position == middle)
            {
                MoveLeft();
            }   
        }
    }
}

void MoveLeft()
{
    var pos = rigidbody.position;
    float xPosition = left.transform.position.x;
    pos.x = Mathf.Lerp(pos.x, xPosition, speed * Time.deltaTime);
    rigidbody.position = pos;
}

My method is in the FixedUpdate because I'm moving the players rigidbody as oppose to translating the actual player.

Answer 1

Right now the player only moves when you hit mouse button because that's how your code is written: you check if the mouse is pressed every frame, and only if it is move the rigidbody.

If you want the player to move regardless of whether the mouse is still pressed or not, you should create some kind of variable to save the state of the player, and set to move left when the mouse button is pressed and set it to stop when the player reaches his target.

If I correctly understood your goal, it would look something like this:

bool moveLeft = false;

void FixedUpdate() 
{

    if(Input.GetMouseButtonDown(0)
        && (Input.mousePosition.x < (Screen.width*2)/3 && Input.mousePosition.y > Screen.height/3))
    {
        moveLeft = true;
    }

    if (moveLeft
        && (position == middle))
    {
        MoveLeft();
    }
    else
    {
        moveLeft = false;
    }
}

void MoveLeft()
{
    var pos = rigidbody.position;
    float xPosition = left.transform.position.x;
    pos.x = Mathf.Lerp(pos.x, xPosition, speed * Time.deltaTime);
    rigidbody.position = pos;
}