SplashScreenManager.cs

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using UnityEngine;
using UnityEngine.SceneManagement;
using System.Collections;
using HKI.Core.Scenes;

namespace HKI.Core.Init
{
    public class SplashScreenManager : MonoBehaviour
    {
        // Classes
        [System.Serializable]
        public class SplashScreen
        {
            // Public Variables
            [SerializeField] GameObject SplashScreenGO = null;
            [SerializeField] float DurationTime = 5.0f;

            // Getter
            public GameObject GetSplashScrenGO { get { return SplashScreenGO; } }
            public float GetDurationTime { get { return DurationTime; } }
        }

        // Public variables
        [SerializeField] [Scene] string MainMenuScene = "";
        [SerializeField] float MinSplashScreenTime = 3.0f;
        [SerializeField] SplashScreen[] SplashScreens;

        // Start function
        void Start()
        {
            StartCoroutine(HandleSplashScreens());
        }

        // Coroutine functions
        IEnumerator HandleSplashScreens()
        {
            if(SplashScreens == null || SplashScreens.Length == 0)
                yield return new WaitForSecondsRealtime(MinSplashScreenTime);
            else
            {
                float remainingMinSplashScreenTime = MinSplashScreenTime;
                float remainingDurationTime = 0.0f;

                for(int i = 0; i < SplashScreens.Length; i++)
                {
                    if (SplashScreens[i].GetSplashScrenGO != null)
                        SplashScreens[i].GetSplashScrenGO.SetActive(false);
                }

                for (int i = 0; i < SplashScreens.Length; i++)
                {
                    remainingDurationTime = SplashScreens[i].GetDurationTime;

                    if(SplashScreens[i].GetSplashScrenGO != null)
                        SplashScreens[i].GetSplashScrenGO.SetActive(true);

                    while(remainingDurationTime >= 0.0f)
                    {
                        remainingMinSplashScreenTime -= Time.deltaTime;
                        remainingDurationTime -= Time.deltaTime;

                        if(remainingMinSplashScreenTime <= 0.0f && Input.GetKeyDown(KeyCode.Escape))
                        {
                            SceneManager.LoadScene(MainMenuScene);
                            yield break;
                        }

                        yield return null;
                    }

                    if(SplashScreens[i].GetSplashScrenGO != null && i != SplashScreens.Length - 1)
                        SplashScreens[i].GetSplashScrenGO.SetActive(false);
                }
            }

            SceneManager.LoadScene(MainMenuScene);
        }
    }
}