DialogManager V2

Mark conversation completed, finalPanelToOpen

This version includes logic to mark a conversation as completed, using key-value data: key: ConvList.name , value "completed". So, if returning to a scene where the conversation has already been played, that conversation will not be replayed.

Also includes logic to specify finalPanelToOpen, typically this will be the OptionPanel. The DialogManager needs to be configured in Project Settings: script execution order to make sure this is executed after the Hide_Show_Panel script, so that it can make sure to start the scene by displing the finalPanelToOpen if there's no valid conversation, even if that panel is not configured to: ShowOnStart in Hide_Show_Panel script.

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

/// <summary>
/// Dialog manager.
/// Put this script on a panel with canvasGroup, 
/// Important:  remove SpriteRenderer from top level Panel -
/// or change child image order/count to show speaker image
/// required child objects: dialogText, speakerName, nextDialogBtn
/// </summary>

//VERSION 2 - Includes logic to store key-value data: ConvList.Name, "completed" to indicate if a conversation should not be replayed
//Also includes logic for finalPanelToOpen, if there is no conversation to be played.
//This must be configured to have Script Execution order executed after Hide_Show_Panel in Project Settins
public class DialogManager : MonoBehaviour
{

    public CanvasGroup nextPanelToOpenCG;  //next panel to open, set in Inspector
    public CanvasGroup finalPanelToOpenCG; //open if no valid conversations to run
    public Button openDialogBtn; //Button that will open Dialog
    public bool showOnStart = false;

    private Button nextBtn;
    private CanvasGroup dialogPanelCG;
    private Text dialogText, speakerName; //speakerName;
    private Image speakerImage; //optional


    public ConversationList convList; //attach scriptable object in Inspector
    private Queue<ConversationEntry> conversationsQueue = new Queue<ConversationEntry>();
    string convName;

    // Use this for initialization
    void Start()
    {
        dialogPanelCG = GetComponent<CanvasGroup>(); //used to show/hide panel

        Text[] textChildren = GetComponentsInChildren<Text>();
        Image[] imageChildren = GetComponentsInChildren<Image>();

        dialogText = textChildren[0];
        speakerName = textChildren[2];

        if (imageChildren.Length > 4 ) { //means there is a speakerImage
            Debug.Log("number of childImages" + imageChildren.Length);
            speakerImage = imageChildren[4]; //fifth child image - in SpeakerPanel
        }
        nextBtn = GetComponentInChildren<Button>();
        nextBtn.onClick.AddListener(GetNextDialog);

        //checkbox that can be set in inspector, if checked, then this is not exected
        if (!showOnStart)
        {
            Utility.HideCG(dialogPanelCG);
            if (openDialogBtn != null) //if opening dialog with a Button, Populate OpenDialogButton in the Inspector 
            {
                openDialogBtn.onClick.AddListener(ShowDialogPanel);
            }
        }
        else if( ConvCompleted())
        {
            Utility.HideCG(dialogPanelCG);
            if (finalPanelToOpenCG != null)
            {
                Utility.ShowCG(finalPanelToOpenCG); //open option panel
                Debug.Log("show finalPanel");
            }
        }
        else
        { //if showing on scene load, get first Dialog 
            Utility.ShowCG(dialogPanelCG);
        }

        if (convList != null)
        {
            InitializeDialog(); //call once in Start
        }
        else //if no conversations - show finalPanelToOpen();
        if (finalPanelToOpenCG != null)
        {
            Utility.ShowCG(finalPanelToOpenCG); //open option panel
            Debug.Log("show finalPanel");
        }
    } //end of Start

    //Populates the Queue with ConversationEntries 
    //from the ConvList scriptableObject's Conversation variable.
    //Also calls GetNextDialog to populate initial conversation data for first conversation
    void InitializeDialog()
    {
       
            foreach (ConversationEntry item in convList.Conversation)
            {
                conversationsQueue.Enqueue(item); //put each string -item in the queue
            }
            GetNextDialog();  //get first item
       
    } //end method

    bool ConvCompleted()
    {
        bool completed = false;
        string convStatus = GameData.instanceRef.GetChoice(convList.name);
        if (convStatus == "completed")
        {
            completed = true;
        }
        return completed;
    }

    void setConvCompleted()
    {
        GameData.instanceRef.SaveChoice(convList.name, "completed");
    }

    /// <summary>
    /// Opens the dialog.
    /// this method is called if there is an 
    /// openDialog button set in the Inspector
    /// otherwise, select checkbox showOnStart 
    /// </summary>
    public void ShowDialogPanel()
    {
        Utility.ShowCG(dialogPanelCG);
        if (openDialogBtn != null){
            openDialogBtn.gameObject.SetActive(false);
        }
    } //end method


    /// <summary>
    /// Nexts the dialog.
    /// Sets UI elements: speakerName, speakerImage, dialogText
    /// </summary>
    /// <returns><c>true</c>, if dialog there is more dialog, <c>false</c> otherwise.</returns>
    public void GetNextDialog()
    {
        if (conversationsQueue.Count > 0)
        {
            ConversationEntry item = conversationsQueue.Dequeue();
            speakerName.text = item.speakerName;
            if (speakerImage != null)
            { //if not using Sprite
                speakerImage.sprite = item.speakerImg;
            }
            StopAllCoroutines();
            string curSentence = item.dialogTxt;
            StartCoroutine(TypeSentence(curSentence));
        }
        else //no more conversations
        {
            //set conversation is completed
            setConvCompleted(); //do not replay this conversation
            Utility.HideCG(dialogPanelCG); // close panel
            if (nextPanelToOpenCG != null) //check to see if valid gameObject was set in inspector
            {
                Utility.ShowCG(nextPanelToOpenCG);
            }
        }

    } //end GetNextDialog method

    //this allows single characters to be added to look like typed text
    IEnumerator TypeSentence(string sentence)
    {
        dialogText.text = ""; //clear previous sentance
        foreach (char letter in sentence.ToCharArray())
        {
            dialogText.text += letter;
            yield return new WaitForSeconds(0.05f); ;
        }
    }//end TypeSentence method


    //can be executed to pass in a conversationList from some triggering event
    public void TriggeredDialog( ConversationList conversation)
    {
        convList = conversation;
        if (ConvCompleted() == false)
        {
            InitializeDialog();
            Utility.ShowCG(dialogPanelCG);

            //see if there is a next panel to open
            GameObject nextPanelGameObj = GameObject.Find(convList.nextPanelName);
            if (nextPanelGameObj != null)
            {
                nextPanelToOpenCG = nextPanelGameObj.GetComponent<CanvasGroup>();
            }
            Debug.Log("DialogManager, startDialog");
        }
    }

} // end class