Accessing values of variables from Dialogue Databases that are instantiated at runtime

[Sternutation]

Okay, that is super-helpful. Will use it this way.

[Sternutation]

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        string luaScript = @"Actor['{ActorName}'] = \{ Name = '{ActorName}', Display_Name = '{ActorDisplayName}'\}";
        Lua.Run(luaScript);
        dialogueActor = gameObject.AddComponent<DialogueActor>();
        dialogueActor.actor = ActorName;

This is what I tried using, but I am getting syntax errors. Using the C# 6.0 version of string interpolation(as it was in your example), I get an error indicating unrecognised escape sequence wherever \ is used.

If I replace the $sign with the @ as shown in the above snippet, which at least allows me to get into playmode, I get a syntax error, indicating that the string has not been parsed successfully.

If I remove the @ and / entirely, I get a stack overflow error.


As someone unfamiliar with Lua(both Lua itself and the Dialogue System's Lua class), I am not entirely sure about how it parses a C# string, especially since the C# 6.0 version of string interpolation no longer works.

Apologies if it seems like I am asking for spoonfeeding.

[Tony Li]

Hi,

String interpolation of the form $"...{variable}..." is only available in newer versions of Unity that are using the C# 6.0 standard or higher. Try String.Format() or regular string concatenation:

Code: Select all

string luaScript = "Actor['" + ActorName + "'] = { Name = '" + ActorName + "', Display_Name = '" + ActorDisplayName + "'}";
Lua.Run(luaScript);

[Sternutation]

Hello,

That worked for me! I really appreciate all the help.

[Tony Li]

Glad to help!

[Sternutation]

I may have spoken too soon, I see that I am getting a stack overflow error.

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Lua code 'Actor['Bob'] = { Name = 'Bob', Display_Name = 'BobTheCapsule'}' threw exception 'The requested operation caused a stack overflow.'

Where 'Bob' is derived from a parameter called ActorName and 'BobTheCapsule' is derived from a parameter called ActorDisplayName. For testing purposes I had put these as serialized variables.

Lol I end up returning to this thread again and again, thinking that I have it solved, only to see that it is not the case. The weirdest thing is that I could have sworn that BobTheCapsule was working when I implemented the solution on Friday.

[Tony Li]

Something else is going on. That line by itself runs fine in Lua.

Can you post the C# code that you're using to run that?

[Sternutation]

Sure, I am posting it below.

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    public string ActorName;
    //public string ActorDisplayName;
    private DialogueActor dialogueActor;
    void Awake()
    {
        string luaScript = "Actor['" + ActorName + "'] = { Name = '" + ActorName + "', Display_Name = '" + gameObject.name + "'}";
        Lua.Run(luaScript);
        dialogueActor = gameObject.AddComponent<DialogueActor>();
        dialogueActor.actor = ActorName;
    }

Tested it with both ActorDisplayName and gameObject.name(latter used only because of saving the gameObject as the same name as what we want to display on screen)

[Tony Li]

If this happens in the same scene that the Dialogue Manager first initializes itself in, change your Awake method to Start. This will allow the Dialogue Manager to initialize itself first.

I tested this script, and it works:

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using UnityEngine;
using PixelCrushers.DialogueSystem;

public class CreateRuntimeActor : MonoBehaviour
{
    public string ActorName;

    private void Start()
    {
        string luaScript = "Actor['" + ActorName + "'] = { Name = '" + ActorName + "', Display_Name = '" + gameObject.name + "'}";
        Lua.Run(luaScript);
    }
}

If that doesn't help, please feel free to send a reproduction project to tony (at) pixelcrushers.com.

[Sternutation]

Okay, I shall try putting it in Start. I was testing it out in a SampleScene so the DialogueManager does initialize in this scene as well for this particular context.