Question

我的代码工作得很好，直到我为健康添加了文本并保存了幸存者。

现在行控制器。移动（moveVelocity）;给出错误NullRefeenceexption，因为控制器为空。

奇怪的是，如果我进入LivingEntity并用

注释掉所有的行

Health.text或SurvivorsSaved.text它再次起作用。

任何人都知道为什么？

代码：

public class Player : LivingEntity {

    public float moveSpeed = 5;

    Camera viewCamera;
    PlayerController controller;
    GunController gunController;

    protected override void Start()
    {
        base.Start();
        controller = GetComponent<PlayerController>();
        gunController = GetComponent<GunController>();
        viewCamera = Camera.main;
    }

    void Update()
    {
        // Movement input
        Vector3 moveInput = new Vector3(Input.GetAxisRaw("Horizontal"), 0, Input.GetAxisRaw("Vertical"));
        Vector3 moveVelocity = moveInput.normalized * moveSpeed;
        controller.Move(moveVelocity);

        // Look input
        Ray ray = viewCamera.ScreenPointToRay(Input.mousePosition);
        Plane groundPlane = new Plane(Vector3.up, Vector3.zero);
        float rayDistance;

        if (groundPlane.Raycast(ray, out rayDistance))
        {
            Vector3 point = ray.GetPoint(rayDistance);
            //Debug.DrawLine(ray.origin,point,Color.red);
            controller.LookAt(point);
        }

        // Weapon input
        if (Input.GetMouseButton(0))
        {
            gunController.Shoot();
        }
    }

}

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class LivingEntity : MonoBehaviour, IDamageable
{

    public float startingHealth;
    protected float health;
    protected bool dead;
    private float playerhealth=100;
    private int Survivorssaved=0;

    public Text Health;
    public Text SurvivorsSaved;

    public event System.Action OnDeath;

    protected virtual void Start()
    {
        health = startingHealth;
        Health.text = "Health: " + playerhealth;
        SurvivorsSaved.text = "Survivors Saved:" + Survivorssaved;
    }

    public void TakeHit(float damage, RaycastHit hit)
    {
        TakeDamage(damage);
    }

    public void TakeDamage(float damage)
    {
        health -= damage;
        if (GameObject.Equals(gameObject, GameObject.FindGameObjectWithTag("Player")))
        {
            playerhealth = health;
            Health.text = "Health: " + playerhealth;
            SurvivorsSaved.text = "Survivors Saved: " + Survivorssaved;
        }
        if (health <= 0 && !dead)
        {
            if(GameObject.Equals(gameObject, GameObject.FindGameObjectWithTag("Player")))
            {  
            }
            if (GameObject.Equals(gameObject, GameObject.FindGameObjectWithTag("Zombie")))
            {
                ScoreManager.Instance.AddScore(100);
            }
            if (GameObject.Equals(gameObject, GameObject.FindGameObjectWithTag("Survivor")))
            {
                ScoreManager.Instance.RemoveScore(500);
            }
            Die();
        }
    }

    public void HealDamage(float damage)
    {
        health += damage;
        playerhealth = health;
        Survivorssaved += 1;
        Health.text = "Health: " + playerhealth;
        SurvivorsSaved.text = "Survivors Saved: " + Survivorssaved;
    }

    protected void Die()
    {
        dead = true;
        if (OnDeath != null)
        {
            OnDeath();
        }
        GameObject.Destroy(gameObject);
    }
}

Answer 1

我找到了答案，但我没有看到我将其标记为已解决，因此我将简单地发布解决方案。

当我在团结场景编辑器中检查时，正确地将playerController传递给播放器时，发现健康和幸存者获救的文本对象也被僵尸和幸存者要求，并且他们想要将信息传递给尽管没有传递文本对象，但是文本仍然存在。

我仍然没有把它传递给僵尸或幸存者，但是通过改变代码，我确保僵尸和幸存者永远不会将任何值传递给文本文件。

为什么添加文字会导致玩家移动错误？

1 个答案: