Load custom skin from skin.png

PatchEntryPoint.cs

@@ -1,5 +1,8 @@
 using HarmonyLib;
 using System;
+using System.IO;
+using System.Reflection;
+using UnityEngine;
 using UnityEngine.SceneManagement;
 
 namespace CustomCosmeticLoader
@@ -8,6 +11,8 @@ namespace CustomCosmeticLoader
 	{
 		private static bool IsPatched = false;
 
+		public static Texture2D skin;
+
 		public static void Start()
 		{
 			SceneManager.sceneLoaded += beginPatch;
@@ -20,7 +25,16 @@ namespace CustomCosmeticLoader
 				new Harmony("com.thearst3rd.customcosmeticloader").PatchAll();
 				IsPatched = true;
 				SceneManager.sceneLoaded -= beginPatch;
+				LoadCosmetics();
 			}
 		}
+
+		private static void LoadCosmetics()
+		{
+			string skinFile = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
+			skinFile = Path.Combine(skinFile, "skin.png");
+			skin = new Texture2D(2, 2);
+			skin.LoadImage(File.ReadAllBytes(skinFile));
+		}
 	}
 }

Patches/MarbleControllerPatches.cs

@@ -0,0 +1,38 @@
+using HarmonyLib;
+using System;
+
+namespace CustomCosmeticLoader.Patches
+{
+	[HarmonyPatch(typeof(MarbleController))]
+	[HarmonyPatch("ApplyMyCosmetics")]
+	internal class MarbleControllerApplyMyCosmeticsPatch
+	{
+		private static Cosmetic mirageSkin = null;
+
+		[HarmonyPostfix]
+		static void Postfix(MarbleController __instance)
+		{
+			if (mirageSkin == null)
+			{
+				// We hijack one skin (Mirage) since it's one of the basic skins with no animations/different UVs/etc
+				foreach (Cosmetic skin in CosmeticManager.Skins)
+				{
+					if (skin.Id == "Swirl_M")
+					{
+						mirageSkin = skin;
+						break;
+					}
+				}
+
+				if (mirageSkin == null) //whut
+					return;
+			}
+
+			MarbleHolder mHolder = __instance.MHolder;
+			string actualSkinId = mHolder.CosmeticSet.skin;
+			mHolder.SetMarble(mirageSkin);
+			// Setting the skin id here allows others in multiplayer/replays to see your normal skin
+			mHolder.CosmeticSet.skin = actualSkinId;
+		}
+	}
+}

Patches/MarbleHolderPatches.cs

@@ -0,0 +1,27 @@
+using HarmonyLib;
+using System;
+using UnityEngine;
+
+namespace CustomCosmeticLoader.Patches
+{
+	[HarmonyPatch(typeof(MarbleHolder))]
+	[HarmonyPatch("SetMarble")]
+	internal class MarbleHolderSetMarblePatch
+	{
+		static void Postfix(MarbleHolder __instance, Cosmetic marbleObject)
+		{
+			if (marbleObject.Id != "Swirl_M")
+				return; // I only hijack this one skin, "Mirage"
+			
+			MeshRenderer[] componentsInChildren = __instance.currentMarble.GetComponentsInChildren<MeshRenderer>();
+			for (int i = 0; i < componentsInChildren.Length; i++)
+			{
+				Material[] materials = componentsInChildren[i].materials;
+				foreach (Material material in materials)
+				{
+					material.mainTexture = PatchEntryPoint.skin;
+				}
+			}
+		}
+	}
+}