我正在制作一个FPS生存游戏。我编写了一个GameManager脚本来处理游戏中的敌人生成部分。我的EnemyAttack脚本负责敌人的攻击。问题是，当第一个敌人生成时，我只受到1点伤害（如AttackDamage中设置的），但当第二个敌人生成时，即使我只进入了一个敌人的攻击范围，我也会受到2点伤害（AttackDamage * 2）。以下是我所有的敌人脚本：

EnemyAttack.cs：

   using UnityEngine;   using UnityEngine.UI;   using System.Collections;  public class EnemyAttack : MonoBehaviour  {public float AttackDamage = 1.0f;public float AttackSpeed = 1.0f;void Start() {    StartCoroutine(Attack());}IEnumerator Attack() {    while (true)    {        while (PlayerMovement.isEnemyAttacking == true) {            EnemyAttacking();            yield return new WaitForSeconds(AttackSpeed);        }        yield return 0;    }}public void EnemyAttacking() {    Debug.Log("Enemy Attacking!");    PlayerHealth.Health -= AttackDamage;    GameObject.FindGameObjectWithTag("HealthPoints").GetComponent<Text>().text = "HEALTH: " + PlayerHealth.Health;} }

EnemyAI.cs：

   using UnityEngine;      using System.Collections;        public class EnemyAI : MonoBehaviour {public Transform TriggerBox;// Use this for initializationvoid Start () {}// Update is called once per framevoid Update(){    if (EnemySight.inSight == true)    {        NavMeshAgent agent = GetComponent<NavMeshAgent>();        agent.destination = GameObject.FindGameObjectWithTag("Player").GetComponent<Transform>().position;    }     }    }

EnemySight.cs：

     using UnityEngine;         using System.Collections;      public class EnemySight : MonoBehaviour {public static bool inSight = false;// Use this for initializationvoid Start(){}// Update is called once per framevoid Update(){}void OnTriggerEnter(Collider other){    if (other.gameObject.tag == "Player")    {        inSight = true;    }}void OnTriggerExit(Collider other) {    if (other.gameObject.tag == "Player")    {        inSight = false;    }   }   }

以及PlayerHealth.cs：

  using UnityEngine;  using UnityEngine.UI;       using System.Collections;    public class PlayerHealth : MonoBehaviour {public Transform Player;public static float Health = 100;public static float maxHealth = 100;// Use this for initializationvoid Start () {    GameObject.FindGameObjectWithTag("HealthPoints").GetComponent<Text>().text = "HEALTH: " + Health;}// Update is called once per framevoid Update () {    if (Health <= 0) {        Dead();    }}public static void Dead() {} }

回答：

你的脚本存在一些问题…

我认为你对静态变量的理解可能有误。

静态变量在类的所有实例之间共享其值

来源

public static bool inSight;

不应该使用静态变量。

PlayerMovement.isEnemyAttacking

这也不应该使用静态变量。

目前，一旦有一个敌人满足“攻击”条件，你就会设置和读取一个单一的静态变量，导致所有敌人开始攻击。你应该让你的变量属于每个敌人的实例，而不是将你的变量设为静态。

基本上，你只需要理解什么是静态变量。一旦你明白了，你就会明白为什么你的逻辑不工作。

编辑：解决方案

PlayerHealth脚本。将此脚本附加到场景中的玩家GameObject上。

using UnityEngine;using UnityEngine.UI;public class PlayerHealth : MonoBehaviour{    public static float Health;    public static float maxHealth = 100;    private Text healthText;    void Start()    {        healthText = GameObject.FindGameObjectWithTag("HealthPoints").GetComponent<Text>();        //在开始时使其满100%的健康值        Health = maxHealth;        RefreshHealthBar();    }    public void TakeDamage(float damage)    {        Health -= damage;        RefreshHealthBar();        if (Health <= 0)            Die();    }    public void Die()    {        Health = 0;        RefreshHealthBar();        //TODO: 你的代码    }    void RefreshHealthBar()    {        healthText.text = "HEALTH: " + Health;    }}

EnnemyAI脚本。将此脚本附加到你的敌人预制件上。

 using System.Collections;using UnityEngine;public class EnnemyAI : MonoBehaviour{    public float AttackDamage = 1.0f;    public float AttackSpeed = 1.0f;    public float AttackRange = 1.0f;    private bool isPlayerInSight;    private GameObject target;    private NavMeshAgent agent;    // Use this for initialization    void Start ()    {        target = GameObject.FindGameObjectWithTag("Player");        agent = GetComponent<NavMeshAgent>();        StartCoroutine(AttackLoop());    }    // Update is called once per frame    void Update ()    {        if (isPlayerInSight)        {            agent.destination = target.transform.position;        }    }    IEnumerator AttackLoop()    {        while (true)        {            //我不知道你的攻击逻辑，所以假设他们可以在1单位范围内攻击            while (Vector3.Distance(target.transform.position, this.transform.position) <= AttackRange)            {                Attack();                yield return new WaitForSeconds(AttackSpeed);            }            yield return 0;        }    }    void Attack()    {        target.GetComponent<PlayerHealth>().TakeDamage(AttackDamage);    }    void OnTriggerEnter(Collider other)    {        if (other.gameObject.tag == "Player")        {            isPlayerInSight = true;        }    }    void OnTriggerExit(Collider other)    {        if (other.gameObject.tag == "Player")        {            isPlayerInSight = false;        }    }}

1. 为了性能原因，我将FindGameObjectWithTag从Update()循环中移出。
2. 玩家不再监听攻击。相反，敌人会向玩家发送伤害。

这样我们就去掉了静态变量。