Add quick interactions locally

Quick Interactions/CSharp/Client/CrabUI/Animations/CUIInterpolate.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Diagnostics;
+using System.IO;
+
+using Barotrauma;
+using Microsoft.Xna.Framework;
+
+namespace QICrabUI
+{
+  /// <summary>
+  /// Class containing a few interpolate functions for CUIAnimation
+  /// </summary>
+  public class CUIInterpolate
+  {
+    public static object InterpolateColor(object start, object end, double lambda)
+    {
+      return ((Color)start).To(((Color)end), (float)lambda);
+    }
+
+    public static object InterpolateVector2(object start, object end, double lambda)
+    {
+      Vector2 a = (Vector2)start;
+      Vector2 b = (Vector2)end;
+      return a + (b - a) * (float)lambda;
+    }
+
+    public static object InterpolateFloat(object start, object end, double lambda)
+    {
+      float a = (float)start;
+      float b = (float)end;
+      return a + (b - a) * (float)lambda;
+    }
+
+    public static Dictionary<Type, Func<object, object, double, object>> Interpolate = new();
+
+    internal static void InitStatic()
+    {
+      CUI.OnInit += () =>
+      {
+        Interpolate[typeof(Color)] = InterpolateColor;
+        Interpolate[typeof(Vector2)] = InterpolateVector2;
+        Interpolate[typeof(float)] = InterpolateFloat;
+      };
+
+      CUI.OnDispose += () =>
+      {
+        Interpolate.Clear();
+      };
+    }
+  }
+}