Runner_Iceland_2019/Assets/!Santa/Scripts/GameLoader.cs

using System.Collections;
using UnityEngine;

public class GameLoader : MonoBehaviour
{
    public string SceneName;

    public Texture2D Back;
    public Texture2D whitePixel;

    private void Start()
    {
        ImageFit(Back);
        StartCoroutine(LoadLevel());
    }

    public void OnGUI()
    {
        GUI.DrawTexture(new Rect(0, 0, Screen.width, Screen.height), whitePixel, ScaleMode.StretchToFill);
        GUI.DrawTexture(new Rect(x,y,width,height), Back,ScaleMode.StretchToFill);
    }

    private IEnumerator LoadLevel()
    {
        yield return new WaitForSeconds(5);
        Application.LoadLevelAsync(SceneName);
    }

    /*private AsyncOperation operation;

    [SerializeField]
    private UISprite progress;

	internal void Start () 
    {
	    operation = Application.LoadLevelAsync(SceneName);
	}

    internal void Update()
    {
        if (operation != null)
        {
            progress.fillAmount = operation.progress;
        }
    }*/

    private float width;
    private float height;
    private float x;
    private float y;

    private void ImageFit(Texture2D texture, Vector2? placeSize = null)
    {
        var size = placeSize == null ? new Vector2(Screen.width, Screen.height) : placeSize.Value;
        //texture.MakePixelPerfect();

        var widthPercent = texture.width / (size.x / 100f);
        var heightPercent = texture.height / (size.y / 100f);

        if (widthPercent > heightPercent)
        {
            width = (int)((texture.width * 100) / widthPercent) * 0.8f;
            height = (int)((texture.height * 100) / widthPercent) * 0.8f;
            x = Screen.width * 0.1f;
            y = size.y/2f - height/2f;
        }
        else
        {
            width = (int)((texture.width * 100) / heightPercent) * 0.8f;
            height = (int)((texture.height * 100) / heightPercent) * 0.8f;
            x = (size.x / 2f - width / 2f) +  Screen.width * 0.1f;;
            y = 0;
        }
    }
}