OnGUI仅在第一个组件中调用

Question

我正在创建一个游戏来了解Unity观看教程（this one）而我的播放器有两个组件：PlayerHealth和PlayerAttack。两者都运行良好，但问题是当我尝试在第二个组件的OnGUI（PlayerAttack）中执行某些操作时，从不调用PlayerAttack中的OnGUI。

是因为PlayerAttack被添加到PlayerHealth下面吗？按照以下代码进行打印。

PlayerHealth.cs

using UnityEngine;
using System.Collections;

public class PlayerHealth : MonoBehaviour {
    public int maxHealth = 100;
    public int curHealth = 100;

    public float healthBarLenght;

    // Use this for initialization
    void Start () {
        healthBarLenght = Screen.width / 3;
    }

    // Update is called once per frame
    void Update () {
        AddjustCurrentHealth(0);
    }

    void OnGUI(){
        GUI.Box(new Rect(10, 10, healthBarLenght, 20), curHealth + "/" + maxHealth);
    }

    public void AddjustCurrentHealth(int adj){
        curHealth += adj;

        curHealth = Mathf.Min(Mathf.Max(curHealth, 0), maxHealth);
        maxHealth = Mathf.Max(maxHealth, 1);

        healthBarLenght = ((float) Screen.width / 3) * (curHealth / (float) maxHealth);
    }
}

PlayerAttack.cs

using UnityEngine;
using System.Collections;

public class PlayerAttack : MonoBehaviour {
    public GameObject target;
    public float attackTimer;
    public float coolDown;

    // Use this for initialization
    void Start () {
        attackTimer = 0;
        coolDown = 2;
    }

    // Update is called once per frame
    void Update () {
        if(attackTimer > 0){
            attackTimer -= Time.deltaTime;
        } else {
            attackTimer = 0;
        }

        if(Input.GetKeyUp(KeyCode.F) && attackTimer == 0){
            attackTimer = coolDown;

            Attack();
        }
    }

    void onGUI(){
        float loadPct = coolDown - attackTimer;

        GUI.Box(new Rect(10, 30, loadPct, 10), loadPct + "%");
    }

    private void Attack(){
        float distance = Vector3.Distance(target.transform.position, transform.position);
        Vector3 dir = (target.transform.position - transform.position).normalized;
        float direction = Vector3.Dot(dir, transform.forward);

        Debug.Log(direction);

        if(distance <= 2.5 && direction > 0.9)
        {
            EnemyHealth eh = (EnemyHealth) target.GetComponent("EnemyHealth");

            eh.AddjustCurrentHealth(-1);
        }
    }
}

Answer 1

您在PlayerAttack类上的OnGUI方法是“onGUI”，而不是“OnGUI”（大写O）。记住C＃是区分大小写的。