Support showing custom marbles in multiplayer

CustomCosmeticLoader.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>net48</TargetFramework>
   </PropertyGroup>
-  
+
   <Import Project="$(ProjectDir)UserProperties.xml" />
 
   <Target Name="VerifyModReferences" BeforeTargets="Build">

Patches/MainMenuPanelPatches.cs

@@ -17,9 +17,6 @@ namespace CustomCosmeticLoader.Patches
 			if (Config.skinNameToHijack == "*")
 				return;
 
-			if (Shared.SkinToHijack == null)
-				return;
-
 			if (__instance.cosmeticDisplay)
 			{
 				__instance.cosmeticDisplay.Clear();

Patches/MarbleControllerPatches.cs

@@ -16,7 +16,8 @@ namespace CustomCosmeticLoader.Patches
 			if (Config.skinNameToHijack == "*")
 				return;
 
-			if (Shared.SkinToHijack == null)
+			// Shouldn't happen I don't think but we do this elsewhere in mp
+			if (NetworkManager.IsMultiplayer)
 				return;
 
 			MarbleHolder mHolder = __instance.MHolder;

Patches/MarbleHolderPatches.cs

@@ -1,5 +1,6 @@
 using HarmonyLib;
 using System;
+using System.Reflection;
 using UnityEngine;
 
 namespace CustomCosmeticLoader.Patches
@@ -17,8 +18,42 @@ namespace CustomCosmeticLoader.Patches
 
 			if (!Config.inCosmeticMenu && __instance == CosmeticPanel.cosmHolder)
 				return;
-			
+
+			// If this is a networked game, ONLY apply to my marble and not anyone else happening to use our SkinToHijack
+			if (NetworkManager.IsMultiplayer)
+			{
+				MarbleController controller = __instance.GetComponentInParent<MarbleController>();
+				if (!controller.isMyClientMarble())
+					return;
+            }
+
 			Shared.ApplyCustomTexture(__instance.currentMarble);
 		}
 	}
+
+	[HarmonyPatch(typeof(MarbleHolder), nameof(MarbleHolder.CheckSet))]
+	internal class MarbleHolderCheckSetPatch
+	{
+		static void Postfix(MarbleHolder __instance, Cosmetic.Set cs)
+		{
+			if (!Config.enabled)
+				return;
+
+			if (!NetworkManager.IsMultiplayer)
+				return;
+
+			FieldInfo mbcField = typeof(MarbleHolder).GetField("mbc", BindingFlags.NonPublic | BindingFlags.Instance);
+			MarbleController controller = mbcField.GetValue(__instance) as MarbleController;
+
+			if (controller == null)
+				return;
+
+			// Don't hijack the soccer ball or zombie skins
+			if (cs.skin == "SoccerBall_V4" || cs.skin == "Zombie")
+				return;
+
+			__instance.SetMarble(Shared.SkinToHijack);
+			__instance.CosmeticSet.skin = cs.skin;
+		}
+	}
 }

Shared.cs

@@ -20,7 +20,7 @@ namespace CustomCosmeticLoader
 					if (skinToHijack == null)
 						Debug.LogWarning("Couldn't hijack skin " + Config.skinNameToHijack);
 				}
-				
+
 				return skinToHijack;
 			}
 		}