GTFO VR Mod Postmortem

原始链接: https://dsprtn.dev/posts/GTFO-VR-Postmortem/

出于对在虚拟现实中体验生存恐怖游戏《GTFO》的渴望，作者投入了超过 800 小时和 500 次代码提交，开发了一款全面的 VR 模组。该项目最初是通过 DnSpy 进行简单的汇编修改，随后演变为使用 Harmony 和 BepInEx 进行运行时补丁的强大开源工具。这一转变带来了更好的可维护性和合规的分发方式。该模组引入了诸多沉浸式功能，如动作控制、拟真用户界面（diegetic UI）、触觉反馈支持以及终端交互，同时平衡了游戏难度，确保了与非 VR 玩家相比的公平体验。该项目面临了重大障碍，最主要的是游戏转向 IL2CPP 脚本后端，这使得可读的 C# 代码被复杂的 C++ 反汇编所取代，开发过程变得更加艰苦。尽管面临重重挑战，且作者对该游戏的个人兴趣逐渐减退，但该模组仍取得了成功，获得了超过 6,000 次下载，并得到了专注社区的贡献。最终，该项目成为了作者职业生涯中关键的积累，证明了模组开发既是一项宝贵的技术挑战，也是为游戏社区做出贡献的有益方式。

Intro

public class DeleteIfNear : MonoBehaviour
{
  [SerializeField]
  private GameObject Offender;
  [SerializeField]
  private float Distance = 50f;

  private void Update()
  {
    if (!((Object) this.Offender != (Object) null) || (double) (this.transform.position - this.Offender.transform.position).sqrMagnitude >= (double) this.Distance * (double) this.Distance)
      return;
    Debug.Log((object) ("Deleting offender " + this.Offender.name));
    Object.Destroy((Object) this.Offender);
    this.Offender = (GameObject) null;
  }
}

/// <summary>  
/// Deletes an object if it gets close enough  
/// </summary>  
public class DeleteIfNear : MonoBehaviour  
{  
  [SerializeField]  
  private GameObject Offender;  
  
  [SerializeField]  
  private float Distance = 50.0f;  
  
  void Update()  
  {        
    // If distance to target is less than Distance, we delete the offender 
    if (Offender != null)  
    {
      Vector3 toOffender = transform.position - Offender.transform.position;  
      if (toOffender.sqrMagnitude < Distance * Distance)  
      {                
          Debug.Log($"Deleting offender {Offender.name}");  
          Destroy(Offender);  
          Offender = null;  
      }        
    }
  }
}

  /// <summary>
  /// Add event calls for the player shooting weapons
  /// </summary>
  
  [HarmonyPatch(typeof(Weapon), nameof(Weapon.ApplyRecoil))]
  internal class InjectPlayerWeaponFireEvents
  {
      private static void Postfix(Weapon __instance)
      {
          if(__instance.Owner.IsLocallyOwned)
          {
              PlayerFireWeaponEvents.WeaponFired(__instance);
          }
      }
  }

GTFO VR Mod Postmortem

Intro

First Foray Into Modding

Harmony and BepInEx to the rescue

The Gameplay in VR

The Architecture

IL2CPP

Performance

Open-Source

The Numbers

Closing words