MyMB Proto 0.01

//Consider this some thought bubbles... use AT OWN RISK.

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

public class MyMB : MonoBehaviour
{
    protected Dictionary<Type, Component> cache = new Dictionary<Type, Component>();

    public T Cache<T>() where T : Component
    {
        if (cache.ContainsKey(typeof(T))) return (T)cache[typeof(T)];
        return (T)(cache[typeof(T)] = GetComponent<T>());
    }

    bool onUpdatedRunning = false;
    SortedList<Func<bool>, Action> OnUpdatedList = new SortedList<Func<bool>, Action>();

    public void OnUpdated(Func<bool> condition, Action action)
    {
        OnUpdatedList.Add(condition, action);
        if (!onUpdatedRunning) StartCoroutine(RunOnUpdated());
        onUpdatedRunning = true;
    }

    public void RunIfUpdated<T>(Func<T> getItem, Action<T> action)
    {
        T oldT = default(T);
        OnUpdated(() =>
        {
            T newT = getItem();
            if (EqualityComparer<T>.Default.Equals(newT, oldT)) return false;
            oldT = newT;
            return true;
        }, () => action(oldT));
    }

    public void RunIfUpdated<T, T2>(Func<T> getItem, Func<T2> getItem2, Action<T, T2> action)
    {
        T oldT = default(T);
        T2 oldT2 = default(T2);
        OnUpdated(() =>
        {
            T newT = getItem();
            T2 newT2 = getItem2();
            if (EqualityComparer<T>.Default.Equals(newT, oldT)
                && EqualityComparer<T2>.Default.Equals(newT2, oldT2)) return false;
            oldT = newT;
            oldT2 = newT2;
            return true;
        }, () => action(oldT, oldT2));
    }

    public IEnumerator RunOnUpdated()
    {
        while (true)
        {
            yield return null;
            foreach (var kvp in OnUpdatedList) if (kvp.Key()) kvp.Value();
        }
    }

    public void NextUpdate(Action action)
    {
        StartCoroutine(DoNextUpdate(action));
    }

    IEnumerator DoNextUpdate(Action action)
    {
        yield return null;
        yield return null;
        action();
    }

}