BarotraumaClient/ClientSource/Screens/Screen.cs

using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using System;
using System.Collections.Generic;
 
namespace Barotrauma
{
    abstract partial class Screen
    {
        public readonly GUIFrame Frame;
 
        protected Screen()
        {
            Frame = new GUIFrame(new RectTransform(Vector2.One, GUI.Canvas), style: null)
            {
                CanBeFocused = false
            };
        }
 
        public virtual void AddToGUIUpdateList()
        {
            Frame.AddToGUIUpdateList();
        }
 
        public virtual void Draw(double deltaTime, GraphicsDevice graphics, SpriteBatch spriteBatch)
        {
        }
 
        public void ColorFade(Color from, Color to, float duration)
        {
            if (duration <= 0.0f) return;
            
            CoroutineManager.StartCoroutine(UpdateColorFade(from, to, duration));
        }
 
        private IEnumerable<CoroutineStatus> UpdateColorFade(Color from, Color to, float duration)
        {
            while (Selected != this)
            {
                yield return CoroutineStatus.Running;
            }
 
            float timer = 0.0f;
 
            while (timer < duration)
            {
                GUI.ScreenOverlayColor = Color.Lerp(from, to, Math.Min(timer / duration, 1.0f));
                timer += CoroutineManager.DeltaTime;
                yield return CoroutineStatus.Running;
            }
 
            GUI.ScreenOverlayColor = to;
 
            yield return CoroutineStatus.Success;
        }
 
        public virtual void OnFileDropped(string filePath, string extension) { }
 
        public virtual void Release()
        {
            Frame.RectTransform.Parent = null;
        }
    }
}