Question

我有一个上下移动的目标，但我不确定如何将它的垂直移动限制在某个y轴范围内。谢谢你的建议。代码如下：

using UnityEngine;
using System.Collections;

public class TargetMovementVertical : MonoBehaviour 
{
    public int maxSpeed;

    private Vector3 startPosition;

    // Use this for initialization
    void Start () 
    {
        maxSpeed = 3;

        startPosition = transform.position;
    }

    // Update is called once per frame
    void Update ()
    {
        MoveVertical ();
    }

    void MoveVertical()
    {
        transform.position = new Vector3(transform.position.x, startPosition.y + Mathf.Sin(Time.time * maxSpeed), transform.position.z);

        if(transform.position.y > 1.0f)
        {
            transform.position = new Vector3(transform.position.x, transform.position.y, transform.position.z);
        }
        else if(transform.position.y < -1.0f)
        {
            transform.position = new Vector3(transform.position.x, transform.position.y, transform.position.z);
        }
    }
}

Answer 1

您的问题可能有两个含义：

1-如果要将y shift限制在-1到1之内，请使用以下代码：（例如，如果您的原始y等于5，则结果将在范围（4,6）

内

transform.position = new Vector3(0, startPosition.y + Mathf.Sin(Time.time * maxSpeed), 0);

2-如果要使y值始终在-1到1之间，请使用以下代码：（无论原始y值如何，您的结果y值都将在范围（-1,1）内）

transform.position = new Vector3(transform.position.x, Mathf.Sin(Time.time * maxSpeed), transform.position.z);

Answer 2

private Vector3 startPosition;
bool up=true;
// Use this for initialization
void Start () 
{
    //maxSpeed = 3;
    startPosition = transform.position;
}
// Update is called once per frame
void Update ()
{
    MoveVertical ();
}
void MoveVertical()
{   
    var temp=transform.position;
    print (up);
    if(up==true)
    {
        temp.y += 0.01f;
        transform.position=temp;
        if(transform.position.y>=0.39f)
        {
            up = false;
        }
    }
    if(up==false)
    {
        temp.y -= 0.01f;
        transform.position=temp;
        if(transform.position.y<=0.14f)
        {
            up = true;
        }
    }
}

根据需要调整您的值。

Unity3D - 物体在y轴范围内连续上下移动

2 个答案: