TotalScoreView

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

public class TotalScoreView : MonoBehaviour
{
    //этот класс должен быть на сцене только в одном экземпляре, иначе чревато
    private List<ScoreView> m_ScoreViewObjects;

    private Text m_TotalScore;
    private int m_TotalScoreCounter = 0;

    private void Awake()
    {
        m_ScoreViewObjects = new List<ScoreView> ();
        m_TotalScore = GetComponent<Text> ();
    }

    public void RegisterObserver(ScoreView observer)
    {
        observer.onDamageRecieve += OnDamageRecieve;
        m_ScoreViewObjects.Add (observer);
    }

    private void ShowScore(string value)
    {
        m_TotalScore.text = value;
    }

    private string ScoresToString(int value)
    {
        return string.Format ("Score: {0}", value);
    }

    private void OnDamageRecieve(int value)
    {
        m_TotalScoreCounter += value;
        ShowScore (ScoresToString (m_TotalScoreCounter));
    }

    private static TotalScoreView m_Instance;
    public static TotalScoreView Instance
    {
        get
        {
            if (m_Instance == null)
            {
                m_Instance = this;
                return m_Instance;
            }
            return m_Instance;
        }
    }
}