BiggerCraftables.Cecil

CecilMod.cs

using Mono.Cecil;
using Mono.Cecil.Cil;
using Netcode;
using StardewModdingAPI;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BiggerCraftables.Cecil
{
    public class CecilMod : StardewModdingAPI.RewriterMod
    {
        public override void Entry( AssemblyDefinition gameAssembly )
        {
            var sobj = gameAssembly.MainModule.Types.Single(t => t.Namespace == "StardewValley" && t.Name == "Object");
            TypeReference netInt = gameAssembly.MainModule.ImportReference( typeof( NetInt ) );
            FieldDefinition field = new FieldDefinition( "BiggerIndex", FieldAttributes.Public | FieldAttributes.InitOnly, netInt );
            sobj.Fields.Add( field );
            Monitor.Log( "Added BiggerIndex field to StardewValley.Object", LogLevel.Debug );

            foreach ( var meth in sobj.Methods )
            {
                if ( !meth.IsConstructor )
                    continue;

                meth.Body.Instructions.Insert( 0, Instruction.Create(OpCodes.Ldarg_0) );
                meth.Body.Instructions.Insert( 1, Instruction.Create(OpCodes.Newobj, gameAssembly.MainModule.ImportReference( netInt.Resolve().Methods.Single( md => md.IsConstructor && !md.HasParameters ) ) ) );
                meth.Body.Instructions.Insert( 2, Instruction.Create(OpCodes.Stfld, field ) );

                Monitor.Log( "Added BiggerIndex initialization to " + meth );
            }
        }
    }
}