AddLuaObserver

[Sengi]

Hi guys, I need some help to observe when any location field had changed. I know I can observe when particular field had changed like so:

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  void Start() {
        _dialogController = gameObject.GetComponent<DialogueSystemController>();
        DialogueManager.AddLuaObserver("Location[\"Person\"].Lighting Technician", LuaWatchFrequency.EveryUpdate, OnFieldChanged);
    }

    void OnFieldChanged(LuaWatchItem luaWatchItem, Lua.Result newValue){
        Debug.Log("Number of credits changed to: " + newValue.AsString);
    }

But how can I observe with a single method when any field had changed, something like this:

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 DialogueManager.AddLuaObserver("Location[\"Person\"].fields", LuaWatchFrequency.EveryUpdate, OnFieldChanged);

thank you!

[Tony Li]

Hi,

I'm out of the office right now, but when I get back I can post a Lua function that should be able to take care of that.

However, running Lua code every Update may be a little excessive. Checking every Update is called polling. Often, event-driven checking can be more efficient since it only checks when you actually change a field. Do you have control over how Location fields get changed? For example, do you change it in your code or conversations, like:

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Lua.Run("Location['Person'].MC = true");

Or a similar line in a dialogue entry's Script field?

If so, you could add a C# method named SetLocationField(), like this:

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public void SetLocationField(string locationName, string fieldName, object value) {
    DialogueLua.SetLocationField(locationName, fieldName, value);
    OnLocationFieldChanged(locationName, fieldName);
}

void OnLocationFieldChanged(string locationName, string fieldName) {
    Debug.Log("Location " + locationName + " field " + fieldName + " changed!");
}

Then instead of:

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Lua.Run("Location['Person'].MC = true");

You could use this:

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SetLocationField("Person", "MC", true);

Would that work better for you, or would you like a Lua function to help check every Update?

[Sengi]

Thank you Tony Li , one of the best points in Dilogue System - is quick support. The thing is with Location field - is that it can change inside the dialogue system, through the action in conversations. For example Location, or Person can be unlocked when some dialog choices been made. I need to know this situation through the script, so I can adjust and tweek another part of the code.

I already resolved this by using Event field (when I change some location statement - I`m calling Event to launch the update in code), but it requires to take additional care, like edding events to every place where designers need to update all stuff. I thought there is just some kind of observer, that calls a method when some Location/Item field had changed, so I could process this changes in the game.

Thanks again for the quick response!