Saving the Location Table

[Franky]

Hi! Great system, love it. Easy to work with.

I want to save everything in the location table too, though.

I guess I could run the lua engine with a foreach loop, iterate through everything in the table and save it to a string, but that's more than a bit of a hassle and I'm not sure what would be the best way to go about that.

Is there any way to just include the location table in the PersistentDataManager.GetSaveData() and PersistentDataManager.ApplySaveData()?

[Tony Li]

Hi,

In the next version, I'll add an option to include all Location data. In the meantime, you'll need to assign a delegate to PersistentDataManager.GetCustomSaveData.

Here's an example scene that saves Location data:
SaveLocationTableExample_2017-03-25.unitypackage

It uses this script. You can just drop this script into your project and add it to the Dialogue Manager.

Code: Select all

using UnityEngine;
using System.Text;
using PixelCrushers.DialogueSystem;

public class SaveLocationTable : MonoBehaviour
{

    public bool debug = false;

    void Awake()
    {
        PersistentDataManager.GetCustomSaveData = AppendLocationData;
    }

    private string AppendLocationData()
    {
        var sb = new StringBuilder();
        try
        {
            var locationTable = Lua.Run("return Location").AsTable;
            if (locationTable == null)
            {
                if (DialogueDebug.LogErrors) Debug.LogError("Dialogue System: Couldn't save Lua Location[] table.");
                return string.Empty;
            }
            foreach (var title in locationTable.Keys)
            {
                var fields = locationTable[title.ToString()] as LuaTableWrapper;
                sb.AppendFormat("Location[\"{0}\"]=", new System.Object[] { DialogueLua.StringToTableIndex(title) });
                AppendFields(sb, fields);
            }
        }
        catch (System.Exception e)
        {
            Debug.LogError("Dialogue System: Failed to save Lua Location[] data: " + e.Message);
        }
        if (debug) Debug.Log("Dialogue System: Saving this Location info: " + sb.ToString());
        return sb.ToString();
    }

    void AppendFields(StringBuilder sb, LuaTableWrapper fields)
    {
        sb.Append("{");
        try
        {
            if (fields != null)
            {
                foreach (var key in fields.Keys)
                {
                    var value = fields[key.ToString()];
                    sb.AppendFormat("{0}={1}, ", new System.Object[] { DialogueLua.StringToTableIndex(key), GetFieldValueString(value) });
                }
            }
        }
        finally
        {
            sb.Append("}; ");
        }

    }

    string GetFieldValueString(object o)
    {
        if (o == null) return "nil";
        System.Type type = o.GetType();
        if (type == typeof(string))
        {
            return string.Format("\"{0}\"", new System.Object[] { DialogueLua.DoubleQuotesToSingle(o.ToString().Replace("\n", "\\n")) });
        }
        else if (type == typeof(bool))
        {
            return o.ToString().ToLower();
        }
        else
        {
            return o.ToString();
        }
    }
}