Unity 仅在游戏开始时触发一次方法答案

【问题标题】：Unity Triggering a Method Once Only at the Beginning of the GameUnity 仅在游戏开始时触发一次方法
【发布时间】：2021-02-13 10:34:55
【问题描述】：

我想在我的统一游戏开始时显示对话文本作为介绍性叙述。

我有一个保存对话文本的方法，然后调用另一个将文本写入 UI 文本框的方法。如果我有一个按钮，这很好用。但是，我希望在第一次加载场景时发生这种情况，但是因为我要离开场景并在同一个游戏中返回，所以我不想每次都欢迎玩家回到他们刚刚离开的场景重新输入。

按钮 => 方法 => 另一个方法写入 UI 文本框

如果开头没有按钮，我怎么能做到这一点？

代码

[System.Serializable]
public class DialogueTrigger : MonoBehaviour
{
    public Dialogue dialogue; // array of strings past in

    public void Start()
    {
        FindObjectOfType<DialogueManager>().StartDialogue(dialogue); //find the dialogue manager and plays the startdialogue method I suppose, should do this once the script is loaded because it is the start method
    }

using UnityEngine;
using UnityEngine.UI;

public class DialogueManager : MonoBehaviour
{
    private Queue<string> sentences;
    public Text dialogueText;
    
    void Start() // dialogue manager turns sentences into queue for the sentence input into dialogue manager
    {
        sentences = new Queue<string>();
    }



    public void StartDialogue(Dialogue dialogue)
    {
        //sentences.Clear(); // clears sentences

        foreach (string sentence in dialogue.sentences) //each "sentence in the dialogue goes through and enters the queue one by one
        {
            sentences.Enqueue(sentence);
        }

        DisplayNextSentence(); //display next sentence method is called once all sentences are in the queue
    }

    public void DisplayNextSentence()
    {
        if(sentences.Count == 0) //once there are no sentences left (queue or otherwise?) the end dialogue method is called
        {
            EndDialogue(); //prints out that the queue has ended... ok 
            return; // this return is what really ends the dialogue
        }

        string sentence = sentences.Dequeue(); //new sentence for sentences that are being dequeued...
        dialogueText.text = sentence; //dialogue text is supposed to be the same as the sentence that was just dequeued and this should print out to whatever text was assigned to the variable dialogue text
    }

感谢您阅读我的问题。

【问题讨论】：

标签： unity3d user-interface triggers dialog

【解决方案1】：

您应该使用DontDestroyOnLoad。创建一个名为DialogueTrigger 的新脚本。然后将其附加到场景中的空GameObject。

using UnityEngine;
using System;

public class DialogueTrigger : MonoBehaviour
{
    // Array of strings past in
    public Dialogue dialogue;

    public void Start()
    {
        // Keeps the gameobject alive on scene changes
        DontDestroyOnLoad(gameObject);

        // Find the dialogue manager and plays the start dialogue
        FindObjectOfType<DialogueManager>().StartDialogue(dialogue);
    }
}

【讨论】：