Solved: It looks like it can't find the current player. When commenting out the code below(line 74), it works. Anyway, thanks for the help!
if (!scores.Contains (player))
{
scores.Add (player);
}
So i followed this guide https://marcelofs.com/blog/how-to-create-a-quick-top10-for-your-unity-game-with-firebase/
It was very simple and easy to understand and i can confirm that uploading and downloading to the database works. The problem is when i try to access the data that is downloaded from Firebase and saved in a C# list. I am not an expert in C#, but i try to learn by making games. And i usually find a solution, but this one is tricky.
So what i understand from this code is that it downloads all the scores and uses a foreach loop to save the data in the list "scores". When that is done, it goes to AddScores() and start to sort the list. And here is the problem, Unity says "Object reference not set to an instance of an object". I tried to do everything without sorting, and the same error comes at the foreach loop when getting the data from the list. And it is here i understand that they cant get any data from the scores list. And i am really stuck.
Here is the code(i know that the firebase url is wrong):
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;
using System;
public class TopScores : MonoBehaviour {
//this is set by UploadPlayerScore and used to compare if the player is in the Top10 returned by the server, or otherwise add it as the 11th result
public static Score player;
public static void SetPlayer(string id, string name, int score, string category)
{
player = new Score();
player.id = id;
player.name = name;
player.score = score;
player.category = category;
player.time = new DateTime();
}
//Have a button point to this to exit
public void Quit()
{
Application.Quit();
}
//you'll need to set this in unity as the parent 'Scores' object shown above
public GameObject scorePanel;
protected List<Score> scores = new List<Score>();
protected void Start()
{
DownloadScores();
}
protected void DownloadScores()
{
UnityHTTP.Request someRequest = new UnityHTTP.Request("get", "https://myfirebase.firebaseio.com/scores.json"/*?orderBy=\"score\"&limitToLast=10"*/);
someRequest.Send((request) => {
Hashtable decoded = (Hashtable)JSON.JsonDecode(request.response.Text);
if (decoded == null)
{
Debug.LogError("server returned null or malformed response ):");
return;
}
foreach (DictionaryEntry json in decoded)
{
Hashtable jsonObj = (Hashtable)json.Value;
Score s = new Score();
s.id = (string)json.Key;
s.name = (string)jsonObj["name"];
s.score = (int)jsonObj["score"];
Debug.Log("Score " + s.score);
s.category = (string)jsonObj["cat"];
//gotta convert it!
DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, System.DateTimeKind.Utc);
s.time = dtDateTime.AddMilliseconds((long)jsonObj["time"]).ToLocalTime();
scores.Add(s);
}
AddScores();
});
}
protected void AddScores()
{
//no dupes
if (!scores.Contains(player))
{
scores.Add(player);
}
//firebase usually returns sorted content, but that's not guaranteed by the JSON format
scores.Sort((Score x, Score y) => { return x.score.CompareTo(y.score); });
//we'll be filling top to bottom
scores.Reverse();
int i = 0;
foreach (Score s in scores)
{
if (i > 10)
{
break;
}
Transform panel = scorePanel.transform.Find("Panel " + i);
Debug.Log(panel);
Transform score = panel.Find("score");
Debug.Log(s.score);
score.GetComponentInChildren<Text>().text = s.score + "";
//panel.Find(s.category).gameObject.SetActive(true);
panel.Find("name").GetComponent<Text>().text = s.name;
if (!s.Equals(player))
{
//the player might not come from the server, so 'time' will be null
panel.FindChild("time").GetComponent<Text>().text = s.time.ToString("yyyy-MM-dd");
}
i++;
}
}
public class Score
{
public string id;
public string name;
public int score;
public string category;
public DateTime time;
public override bool Equals(System.Object obj)
{
if (obj == null)
{
return false;
}
Score s = obj as Score;
if ((System.Object)s == null)
{
return false;
}
return id == s.id;
}
}
}
