Network Behaviour Event Injector

Network Behaviour Event Preloader

A Preload Patcher that adds the methods OnNetworkSpawn, OnNetworkDespawn, OnGainedOwnership, OnLostOwnership, OnNetworkObjectParentChanged, and OnDestroy to all NetworkBehaviours in 'Assembly-CSharp.dll'.

How It's Implemented

Besides sanity checks, all methods are implemented with the following code snippet (TLDR it calls base.OnXYZ() and returns):

private static void CreateEventMethod(AssemblyDefinition assemblyDefinition, MethodReference methodReference,

TypeDefinition typeDef)

{

var newMethod = new MethodDefinition(

methodReference.Name,

MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.Virtual,

assemblyDefinition.MainModule.TypeSystem.Void);

typeDef.Methods.Add(newMethod);

newMethod.Body.InitLocals = true;

foreach (var paramRef in methodReference.Parameters)

newMethod.Parameters.Add(paramRef.Resolve());

var processor = newMethod.Body.GetILProcessor();

processor.Emit(OpCodes.Ldarg_0);

for (var i = 0; i < methodReference.Parameters.Count; i++)

processor.Emit(OpCodes.Ldarg, i + 1);

processor.Emit(OpCodes.Call, methodReference);

processor.Emit(OpCodes.Ret);

}

References to NetworkBehaviour are resolved from the 'Assembly-CSharp'.