Release Phasmophobia Internal Menu: Reversing GhostAI, Sanity & Evidence States in Unity - UnreliableCode Forums

GhostHunter_x

Unity & Phasmo Modder

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2y ago · Feb 18, 2024 3:40 PM

#1

Hey everyone,
Sharing an architectural breakdown of how to build a clean internal GUI menu for Phasmophobia (Unity IL2CPP/Mono runtime) using Dear ImGui and IL2CPP domain inspection.

1. Locating the GhostAI Instance:
In Phasmophobia, the main ghost behavior and state variables are managed by

CPP

GhostAI

and

CPP

GhostTraits

singletons:

CPP

// Conceptual C# / IL2CPP struct representation
public class GhostAI : MonoBehaviour {
    public GhostTraits ghostTraits;
    public GhostInteraction ghostInteraction;
    public bool isHunting;
    public float huntingSpeed;
    public GhostState currentState; // Idle, Wandering, Hunting, Interacting
}

public class GhostTraits {
    public GhostType ghostType; // Spirit, Wraith, Phantom, Demon, Revenant, etc.
    public GhostEvidence[] evidenceList; // EMF5, Fingerprints, Freezing, GhostOrb, etc.
    public float favoriteRoomTemperature;
}

2. Reading Player Sanity & Fuse Box Status:
Player sanity levels are stored in

CPP

PlayerSanity

or

CPP

PlayerData

:

CPP

float currentSanity = pPlayerInstance->playerSanity->sanityLevel;

3. Drawing the ImGui Menu Window:

CPP

void RenderPhasmoMenu() {
    ImGui::Begin("Phasmophobia Research Assistant v2.4", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
    
    if (ImGui::CollapsingHeader("Ghost Intel", ImGuiTreeNodeFlags_DefaultOpen)) {
        ImGui::Text("Ghost Type: %s", GetGhostTypeName(g_GhostAI->ghostTraits->ghostType));
        ImGui::Text("Current State: %s", g_GhostAI->isHunting ? "[!] HUNTING [!]" : "Passive / Wandering");
        ImGui::Text("Ghost Room: %s", g_GhostAI->favoriteRoomName);
        ImGui::ProgressBar(g_GhostAI->huntingSpeed / 3.0f, ImVec2(200, 0), "Hunting Speed");
    }
    
    if (ImGui::CollapsingHeader("Evidence Auto-Tracker")) {
        for (auto& evidence : g_GhostAI->ghostTraits->evidenceList) {
            ImGui::BulletText("Required: %s", GetEvidenceName(evidence));
        }
    }
    
    if (ImGui::CollapsingHeader("ESP & Visuals")) {
        ImGui::Checkbox("Draw Ghost 3D Box ESP", &g_Config.GhostESP);
        ImGui::Checkbox("Draw Fuse Box (Breaker) ESP", &g_Config.BreakerESP);
        ImGui::Checkbox("Draw Cursed Possessions (Tarot, Mirror, Ouija)", &g_Config.CursedESP);
        ImGui::Checkbox("Draw Bone / Evidence Item ESP", &g_Config.BoneESP);
    }
    
    ImGui::End();
}

Feel free to ask any questions about hooking the DirectX Present loop or resolving IL2CPP method pointers!

Hey everyone,
Sharing an architectural breakdown of how to build a clean internal GUI menu for Phasmophobia (Unity IL2CPP/Mono runtime) using Dear ImGui and IL2CPP domain inspection.

[b]1. Locating the GhostAI Instance:[/b]
In Phasmophobia, the main ghost behavior and state variables are managed by [code=cpp]GhostAI[/code] and [code=cpp]GhostTraits[/code] singletons:

[code=cpp]// Conceptual C# / IL2CPP struct representation
public class GhostAI : MonoBehaviour {
    public GhostTraits ghostTraits;
    public GhostInteraction ghostInteraction;
    public bool isHunting;
    public float huntingSpeed;
    public GhostState currentState; // Idle, Wandering, Hunting, Interacting
}

public class GhostTraits {
    public GhostType ghostType; // Spirit, Wraith, Phantom, Demon, Revenant, etc.
    public GhostEvidence[] evidenceList; // EMF5, Fingerprints, Freezing, GhostOrb, etc.
    public float favoriteRoomTemperature;
}[/code]

[b]2. Reading Player Sanity & Fuse Box Status:[/b]
Player sanity levels are stored in [code=cpp]PlayerSanity[/code] or [code=cpp]PlayerData[/code]:
[code=cpp]float currentSanity = pPlayerInstance->playerSanity->sanityLevel;[/code]

[b]3. Drawing the ImGui Menu Window:[/b]
[code=cpp]void RenderPhasmoMenu() {
    ImGui::Begin("Phasmophobia Research Assistant v2.4", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
    
    if (ImGui::CollapsingHeader("Ghost Intel", ImGuiTreeNodeFlags_DefaultOpen)) {
        ImGui::Text("Ghost Type: %s", GetGhostTypeName(g_GhostAI->ghostTraits->ghostType));
        ImGui::Text("Current State: %s", g_GhostAI->isHunting ? "[!] HUNTING [!]" : "Passive / Wandering");
        ImGui::Text("Ghost Room: %s", g_GhostAI->favoriteRoomName);
        ImGui::ProgressBar(g_GhostAI->huntingSpeed / 3.0f, ImVec2(200, 0), "Hunting Speed");
    }
    
    if (ImGui::CollapsingHeader("Evidence Auto-Tracker")) {
        for (auto& evidence : g_GhostAI->ghostTraits->evidenceList) {
            ImGui::BulletText("Required: %s", GetEvidenceName(evidence));
        }
    }
    
    if (ImGui::CollapsingHeader("ESP & Visuals")) {
        ImGui::Checkbox("Draw Ghost 3D Box ESP", &g_Config.GhostESP);
        ImGui::Checkbox("Draw Fuse Box (Breaker) ESP", &g_Config.BreakerESP);
        ImGui::Checkbox("Draw Cursed Possessions (Tarot, Mirror, Ouija)", &g_Config.CursedESP);
        ImGui::Checkbox("Draw Bone / Evidence Item ESP", &g_Config.BoneESP);
    }
    
    ImGui::End();
}[/code]

Feel free to ask any questions about hooking the DirectX Present loop or resolving IL2CPP method pointers!

GhostHunter_x · Phasmophobia & Unity Reverser
GhostAI, Sanity, EMF & Evidence inspection

The following users thanked GhostHunter_x for this post:

ParanormalDev

MelonLoader / BepInEx Dev

MEMBER

Rep: 230

Join Date: Sep 2023

Posts: 21

Thanks: 58

2y ago · Feb 18, 2024 5:15 PM

#2

Super clean writeup! For anyone using MelonLoader or BepInEx on Unity games, you can also hook

CPP

GhostAI.Start()

and store the static reference in a cached field:

CSHARP

[HarmonyPatch(typeof(GhostAI), "Start")]
public class GhostAIPatch {
    public static GhostAI Instance;
    public static void Postfix(GhostAI __instance) {
        Instance = __instance;
    }
}

This avoids doing expensive

CODE

GameObject.FindObjectOfType<GhostAI>()

calls every frame inside your OnGUI/ImGui render loop!

ParanormalDev | MelonLoader & ImGui Modding

RustMechanic

Unity & IL2CPP Reverser

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Posts: 32

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2y ago · Feb 18, 2024 7:30 PM

#3

Caching instances on

CODE

Start()

or

CODE

Awake()

via Harmony/IL2CPP hooks is always best practice in Unity games. Prevents GC pressure and stuttering.

RustMechanic | IL2CPP & Unity Engine Analysis

ZeroMemory

Member

MEMBER

Rep: 75

Join Date: Oct 2024

Posts: 32

Thanks: 18

2y ago · Feb 19, 2024 10:05 AM

#4

Originally Posted by @GhostHunter_x

Draw Cursed Possessions (Tarot, Mirror, Ouija)

This is awesome! Having ESP for the Bone and Cursed item makes finding the hidden objectives so much faster. Thanks for sharing the struct details!

ZeroMemory · Always experimenting

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Phasmophobia Internal Menu: Reversing GhostAI, Sanity & Evidence States in Unity

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