How can I start a List of conversation one by one ?

Unity Engine
1

In some script in the Update I’m doing for example :

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;

public class NaviDialogue : MonoBehaviour
{
    public ConversationTrigger conversationTrigger;

    private void Start()
    {
        
    }

    private void Update()
    {
            conversationTrigger.StartConversations().Add(0);
            conversationTrigger.StartConversations().Add(1);
            conversationTrigger.StartConversations().Add(2);
      }

Or if in the Start :

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.AI;

public class NaviDialogue : MonoBehaviour
{
    public ConversationTrigger conversationTrigger;

    private void Start()
    {    
       conversationTrigger.StartConversations().Add(0);
       conversationTrigger.StartConversations().Add(1);
       conversationTrigger.StartConversations().Add(2);
    }

What I want to do is either in the Update or in the Start that it will play the conversations 0, 1, 2 first it will play conversation 0 when conversation 0 ended start playing 1 when 1 ended start 2 when 2 ended and there is no more conversations in the List stop playing.

The script of the conversations is Conversation Trigger :
In this script I added now this part :

public List<int> StartConversations()
    {
        var conversations = new List<int>();

        for (int i = 0; i < conversations.Count; i++)
        {
            PlayConversation(conversations[i]);
        }

        return conversations;
    }

Then tried in other script for testing to call it in the Update 3 times adding 3 indexs 0 1 2
But it’s not working does nothing. No errors or exceptions just it does nothing.

Before that I was just calling just PlayConversation function but I want to play now number of conversations one by one automatic.

I added the other script too since they are connected.
In the manager script there is the EndDialogue method.

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEngine;

public class ConversationTrigger : MonoBehaviour
{
    public List<Conversation> conversations = new List<Conversation>();
    public GameObject canvas;
    public bool conversationEnd = false;

    [HideInInspector]
    public static int conversationIndex;

    private DialogueManager dialoguemanager;

    private void Start()
    {
        conversationIndex = 0;
        dialoguemanager = FindObjectOfType<DialogueManager>();
    }

    public List<int> StartConversations()
    {
        var conversations = new List<int>();

        for (int i = 0; i < conversations.Count; i++)
        {
            StartCoroutine(PlayConversation(conversations[i]));
        }

        return conversations;
    }

    public IEnumerator PlayConversation(int index)
    {
        if (conversations.Count > 0 &&
            conversations[index].Dialogues.Count > 0)
        {
            for (int i = 0; i < conversations[index].Dialogues.Count; i++)
            {
                if (dialoguemanager != null)
                {
                    dialoguemanager.StartDialogue(conversations[index].Dialogues[i]);
                }

                while (DialogueManager.dialogueEnded == false)
                {
                    yield return null;
                }
            }

            conversationIndex = index;
            conversationEnd = true;
            canvas.SetActive(false);
            Debug.Log("Conversation Ended");
        }
    }

    public void SaveConversations()
    {
        string jsonTransform = JsonHelper.ToJson(conversations.ToArray(), true);
        File.WriteAllText(@"d:\json.txt", jsonTransform);
    }

    public void LoadConversations()
    {
        string jsonTransform = File.ReadAllText(@"d:\json.txt");
        conversations.Clear();
        conversations.AddRange(JsonHelper.FromJson<Conversation>(jsonTransform));
    }
}

The second script is the Dialogue Manaher :

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

public class DialogueManager : MonoBehaviour
{
    public Text dialogueText;
    public Text nameText;
    public float sentencesSwitchDuration;
    public bool animateSentenceChars = false;
    public GameObject canvas;
    public static bool dialogueEnded = false;
    public ConversationTrigger trigger;

    private Queue<string> sentence;

    // Use this for initialization
    void Start()
    {
        sentence = new Queue<string>();
    }

    public void StartDialogue(Dialogue dialogue)
    {
        dialogueEnded = false;

        canvas.SetActive(true);

        nameText.text = dialogue.name;

        if(sentence == null)
            sentence = new Queue<string>();

        sentence.Clear();
        foreach (string sentence in dialogue.sentences)
        {
            this.sentence.Enqueue(sentence);
        }

        DisplayNextSentence();
    }

    public void DisplayNextSentence()
    {
        if (this.sentence.Count == 0)
        {
            EndDialogue();
            return;
        }

        string sentence = this.sentence.Dequeue();
        dialogueText.text = sentence;

        StopAllCoroutines();
        StartCoroutine(DisplayNextSentenceWithDelay(sentence));
    }

    public IEnumerator DisplayNextSentenceWithDelay(string sentence)
    {
        if (animateSentenceChars)
        {
            dialogueText.text = "";
            foreach (char letter in sentence.ToCharArray())
            {
                dialogueText.text += letter;
                yield return null;
            }
        }

        yield return new WaitForSeconds(sentencesSwitchDuration);
        DisplayNextSentence();
    }

    private void EndDialogue()
    {
        dialogueEnded = true;
    }
}
2

You only want to add those conversations in Start(), otherwise every frame that Update() runs you will get another three copies added to your list.

As far as why it’s not working, put some Debug.Log() statements in your coroutines to see where things are going wrong.

If that doesn’t show what’s happening, pare it down further: make a SUPER simple coroutine that shows lines of text and waits for you to accept them, which if I understand you is essentially the core function you’re trying to get going, which is perfect for coroutines like you have.

1 Like