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NitroxPatcher/Patches/Dynamic/LaunchRocket_OnHandClick_Patch.cs

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+using System;
+using System.Collections.Generic;
+using System.Reflection;
+using System.Reflection.Emit;
+using HarmonyLib;
+using NitroxClient.GameLogic;
+using NitroxClient.Unity.Helper;
+using NitroxModel.Helper;
+
+namespace NitroxPatcher.Patches.Dynamic;
+
+public sealed partial class LaunchRocket_OnHandClick_Patch : NitroxPatch, IDynamicPatch
+{
+    internal static readonly MethodInfo TARGET_METHOD = Reflect.Method((LaunchRocket t) => t.OnHandClick(default));
+
+    internal static readonly OpCode INJECTION_OPCODE = OpCodes.Call;
+    internal static readonly object INJECTION_OPERAND = Reflect.Method(() => LaunchRocket.SetLaunchStarted());
+
+    public static IEnumerable<CodeInstruction> Transpiler(MethodBase original, IEnumerable<CodeInstruction> instructions)
+    {
+        Validate.NotNull(INJECTION_OPERAND);
+        /* We replace
+         *
+         * LaunchRocket.SetLaunchStarted();
+         *
+         * by
+         *
+         * LaunchRocket_OnHandClick_Patch.RequestRocketLaunch()
+         * return; (by just removing the following instructions)
+         */
+        foreach (CodeInstruction instruction in instructions)
+        {
+            if (instruction.opcode.Equals(INJECTION_OPCODE) && instruction.operand.Equals(INJECTION_OPERAND))
+            {
+                // We must transfer the labels from the previous instruction
+                yield return new CodeInstruction(OpCodes.Ldarg_0)
+                {
+                    labels = instruction.labels
+                };
+                yield return new CodeInstruction(OpCodes.Call, Reflect.Method(() => RequestRocketLaunch(default)));
+                yield return new CodeInstruction(OpCodes.Ret);
+                break;
+            }
+            yield return instruction;
+        }
+    }
+
+    private static void RequestRocketLaunch(LaunchRocket launchRocket)
+    {
+        Rocket rocket = launchRocket.RequireComponentInParent<Rocket>();
+        Resolve<Rockets>().RequestRocketLaunch(rocket);
+    }
+}