尝试让一个对象查看 Unity 中的另一个对象

嗨，我一直在尝试让对象“Tower”查看对象“Enemy”，但是我收到错误“非静态字段、方法或属性“Enemy.position”需要对象引用” ”

这是敌人的类，我试图在其中定义敌人的位置以供塔参考。

有谁知道如何解决这个问题？谢谢

public class Enemy : MonoBehaviour {

public float speed = 1.5f;
public Vector3 position;

private Vector3 target;

void Start()
{
    target = transform.position;
}

void Update()
{
    if (Input.GetMouseButtonDown(0))
    {
        target = Camera.main.ScreenToWorldPoint(Input.mousePosition);
        target.z = transform.position.z;
    }
    transform.position = Vector3.MoveTowards(transform.position, target, speed * Time.deltaTime);

    position = GameObject.Find("enemy").transform.position;
}

}

这是塔的类，其中“varlookPos=Enemy.position-transform.position;”导致错误。

public class Tower : MonoBehaviour {

public GameObject towerPrefab;
public float speed = 1f;

private bool canPlaceTower()
{
    return tower == null;
}


private GameObject tower;

// Use this for initialization
void Start()
{

}

void Update()
{
    var lookPos = Enemy.position - transform.position;
    lookPos.y = 0;
    var rotation = Quaternion.LookRotation(lookPos);
    transform.rotation = Quaternion.Lerp(transform.rotation, rotation, speed * Time.time);
    transform.Rotate(0, -90, 0);
}
}

非静态字段、方法或属性“Enemy.position”需要对象引用

这是因为position in Enemy is not static.

相反，你可以这样做：

class Tower
{
    public Enemy Victim;

    /// ...
}

你会分配Victim in the 督察那么你会用它来代替你的Enemy.position但是，由于需要手动分配，这种方法受到限制。

替代解决方案：

塔中的独特脚本

• 搜索标记的对象Player
• 查看找到的第一个（如果有）

Code:

using System.Linq;
using UnityEngine;

public class Tower : MonoBehaviour
{
    private void Update()
    {
        var objects = GameObject.FindGameObjectsWithTag("Player");
        if (!objects.Any())
            return;

        var target = objects.First();
        if (target == null)
            return;

        var p1 = transform.position;
        var p2 = target.transform.position;
        var position = new Vector3(p2.x, p1.y, p2.z); // does not bend to target
        transform.LookAt(position);
    }
}

这很简单，相反你可以做一些更好的事情，比如如果有很多玩家，选择离塔最近的一个：

private void Update()
{
    var objects = GameObject.FindGameObjectsWithTag("Player");
    if (!objects.Any())
        return;

    var distances = objects.Select(s => Vector3.Distance(transform.position, s.transform.position)).ToArray();
    var first = distances.First();
    var index = 0;
    var index1 = 0;
    foreach (var distance in distances)
    {
        if (distance < first)
        {
            index1 = index;
            break;
        }
        index++;
    }

    var target = objects[index1];
    if (target == null)
        return;

    var p1 = transform.position;
    var p2 = target.transform.position;
    var position = new Vector3(p2.x, p1.y, p2.z); // does not bend to target
    transform.LookAt(position);
}

请注意，当最近的敌人发生变化时，过渡可能会突然发生，我将其留给您:)（提示：Vector3.SmoothDamp https://docs.unity3d.com/ScriptReference/Vector3.SmoothDamp.html)