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NitroxPatcher/Patches/Dynamic/SpawnOnKill_OnKill_Patch.cs

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+using System;
+using HarmonyLib;
+using NitroxClient.Communication.Abstract;
+using NitroxClient.GameLogic;
+using NitroxClient.MonoBehaviours;
+using NitroxModel.Helper;
+using NitroxModel.Packets;
+using NitroxPatcher.PatternMatching;
+using System.Collections.Generic;
+using System.Reflection;
+using UnityEngine;
+using static System.Reflection.Emit.OpCodes;
+
+namespace NitroxPatcher.Patches.Dynamic;
+
+/// <summary>
+/// Synchronizes entities that Spawn something when they are killed, e.g. Coral Disks.
+/// </summary>
+public sealed partial class SpawnOnKill_OnKill_Patch : NitroxPatch, IDynamicPatch
+{
+    public static readonly MethodInfo TARGET_METHOD = Reflect.Method((SpawnOnKill t) => t.OnKill());
+
+    private static readonly InstructionsPattern spawnInstanceOnKillPattern = new()
+    {
+        Reflect.Method(() => UnityEngine.Object.Instantiate(default(GameObject), default(Vector3), default(Quaternion))),
+        { Stloc_0, "DropOnKillInstance" },
+        Ldarg_0,
+    };
+
+    public static IEnumerable<CodeInstruction> Transpiler(MethodBase original, IEnumerable<CodeInstruction> instructions)
+    {
+        return instructions.InsertAfterMarker(spawnInstanceOnKillPattern, "DropOnKillInstance", new CodeInstruction[]
+        {
+            new(Ldarg_0),
+            new(Ldloc_0),
+            new(Call, ((Action<SpawnOnKill, GameObject>)Callback).Method)
+        });
+    }
+
+    private static void Callback(SpawnOnKill spawnOnKill, GameObject spawningItem)
+    {
+        if (!spawnOnKill.TryGetNitroxEntity(out NitroxEntity destroyedEntity))
+        {
+            Log.Warn($"[{nameof(SpawnOnKill_OnKill_Patch)}] Could not find {nameof(NitroxEntity)} for breakable entity {spawnOnKill.gameObject.GetFullHierarchyPath()}.");
+        }
+        else
+        {
+            Resolve<IPacketSender>().Send(new EntityDestroyed(destroyedEntity.Id));
+        }
+        NitroxEntity.SetNewId(spawningItem, new());
+        Resolve<Items>().Dropped(spawningItem);
+    }
+}