如何在unity中使用c#使播放器在按下时y轴向下，释放时y轴向上。

Question

我在用unity做一个游戏，想问一下，在PC上按键时，如何让玩家的y_axis向下缩放，而松开键时，y_axis向上缩放？

使用System; 使用UnityEngine;

public class Playermovement : MonoBehaviour {

    public Rigidbody rb;

    public float forwardforce = 2000f;
    public float sideswaysforce = 500f;
    Vector3 small;


    // Update is called once per frame
    void FixedUpdate()
    {
        rb.AddForce(0, 0, forwardforce * Time.deltaTime);

        if(Input.GetKey("d"))
        {

            rb.AddForce(sideswaysforce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);

        }

        if (Input.GetKey("a"))
        {

            rb.AddForce(-sideswaysforce * Time.deltaTime, 0, 0, ForceMode.VelocityChange);
        }

        if(Input.GetKey("f"))
        {
            small = transform.localScale;

            small.y = 0.5f;

            transform.localScale = small;
        }

    }



}

        }

Answer 1

你可以这样做，在你现在的代码中，你可以不断缩小比例尺，什么都不重置。

public Vector3 halfScale;
public Vector3 originalScale;

void Start() {
originalScale = transform.localScale;
halfScale = originalScale;
halfScale.y = halfScale.y * 0.5f;
}

        //...in your fixedupdate loop
        if(Input.GetKey("f"))
        {
        transform.localScale = halfScale;
        } else {
        transform.localScale = originalScale;
        }