Arson Mode

A MelonLoader mod for Dale & Dawson Stationery Supplies that adds an arson/firefighting social deduction game mode. One (or more) players are secretly arsonists working through a 5-task chain to ignite fires, while other players must detect clues, extinguish flames, and vote out the culprit.

Arson Mode v1.0.0 by ensui-dev

How It Works

Roles

• Slacker (Arsonist): Secretly complete a 5-task chain to start fires. Win by burning enough rooms simultaneously before time runs out.
• Specialist (Analyst): Investigate fire origin clues, spot tampered smoke detectors, and gather evidence to identify and vote out the arsonist.
• All Players: Extinguish fires using wall-mounted fire extinguishers when fire breaks out.

Arson Task Chain

The arsonist receives these tasks interleaved with normal work tasks, appearing one at a time in the HUD task list with location markers:

#	Task	Location	Duration	Effect
1	Jam the smoke detector	Random fire alarm (varies per game)	4s	Disables a smoke detector
2	Print excessive documents	Printer	5s	Grants paper stack
3	Steal lighter fluid	Supply closet	4s	Grants lighter fluid
4	Stuff trash bin with paper	Trash bin (same room as task 1)	3s	Requires paper stack
5	Toss lit cigarette into bin	Same trash bin as task 4	3s	Fire ignites!

• Tasks 1-4 have decoy versions assigned to Specialists (e.g. "Inspect the smoke detector") that look identical but don't advance the chain.
• Task 5 is arsonist-only and requires lighter fluid.
• Each game randomly selects a different fire alarm location, and the subsequent trash bin tasks target the same room.
• Individual tasks can be toggled on/off in the lobby settings under the Tasks > Slacker category.

Fire Mechanics

• Fire uses the game's native TrashBin fire system (particles, audio, networking all built-in)
• Fire spreads to adjacent rooms at a configurable interval (default: 20s)
• Room adjacency is automatically discovered from RoomManager.roomConnections — works on all maps including future ones
• Fire spread pauses during emergency meetings
• Wall-mounted fire extinguishers have 2 charges each
• When enough rooms are burning simultaneously, a countdown begins — if fires aren't extinguished in time, the arsonist wins and the game ends

Clue System (Specialist Only)

Clue	How It Works
Proximity	On ignition, Specialists see which players were near the fire origin room in the last 30 seconds
Smoke Detector	Players near a jammed detector get a "tampered" notification
Print Log	Printer job history shows a suspicious entry
Visual	Stuffed trash bin is visible to observant players

Win Conditions

Outcome	Condition
Arsonist wins	N rooms burning simultaneously + grace period expires without extinguishing
Crew wins	Arsonist voted out in emergency meeting

When the arsonist wins, the game transitions to the standard end-game screen with role reveals.

Lobby Settings

All settings appear in the lobby under the Arson Mode category:

Setting	Options	Default	Description
Arson Mode	Off / On	Off	Enable/disable the game mode
Fire Spread Speed	10s / 15s / 20s / 25s / 30s	20s	Seconds between fire spreading to adjacent rooms
Extinguish Time	5s / 8s / 10s / 12s / 15s	10s	Grace period before arsonist wins once room threshold is met
Rooms to Burn	1 / 2 / 3 / 4 / 5	3	Burning rooms required for arsonist win condition
Arsonist Count	1 / 2 / 3	1	Number of arsonists per round

Rooms to Burn auto-scales with player count (2 for <=8 players, 3 for <=14, 5 for 15+).

Installation

1. Install MelonLoader v0.6+ for Dale & Dawson Stationery Supplies
2. Download the latest release from the Releases page
3. Place ArsonMod.dll in the game's Mods/ folder
4. Launch the game — "Arson Mode v1.0.0 by ensui-dev" will appear in the MelonLoader console

Project Structure

ArsonMod/
  Core/
    ArsonMod.cs            # Mod entry point, lifecycle, OnUpdate loop
    ArsonSettings.cs       # Configurable parameters + player count scaling
    HarmonyPatches.cs      # 12 Harmony patches hooking game systems
    PlayerAccess.cs        # Player data, room detection, arsonist selection
    PlayerInventory.cs     # Lightweight item tracking (paper, fluid)
    NetworkSync.cs         # Network event broadcasting
    FileLogger.cs          # Debug file logging
  Fire/
    FireManager.cs         # Fire state machine, spread logic, win conditions
    FireEffects.cs         # Particle/audio effects (procedural fallback)
    RoomAdjacency.cs       # Dynamic room graph from RoomManager.roomConnections
  Tasks/
    ArsonTaskChain.cs      # 5-task progression + decoy system
    ArsonTaskInjector.cs   # InteractionAlternative injection + fire alarm handler
    SmokeDetectorTask.cs   # Task 1: Jam detector
    PrintDocumentsTask.cs  # Task 2: Print documents
    StealFluidTask.cs      # Task 3: Steal lighter fluid
    StuffTrashBinTask.cs   # Task 4: Stuff bin
    TossCigaretteTask.cs   # Task 5: Ignite (finale)
  Clues/
    ProximityTracker.cs    # Player position sampling near fire origins
    SmokeDetectorClue.cs   # Tamper detection alerts
    PrintLogClue.cs        # Printer job log evidence
  UI/
    ArsonLobbyUI.cs        # Lobby settings injection into game UI
    ArsonWinScreen.cs      # Victory/defeat screen overlay
    FireNotifications.cs   # Alerts, banners, clue popups
  Items/
    FireExtinguisher.cs    # Extinguisher pickup/usage

ArsonMod.csproj            # Build project

Building from Source

Prerequisites

• .NET 6.0 SDK
• Dale & Dawson Stationery Supplies with MelonLoader v0.6+ installed

Setup

1. Update the GameDir path in ArsonMod.csproj to point to your game installation:

   <GameDir>C:\SteamLibrary\steamapps\common\Dale&amp;Dawson</GameDir>

2. Build:

   dotnet build ArsonMod.csproj -c Release

3. Copy bin/Release/net6.0/ArsonMod.dll to the game's Mods/ folder

Technical Details

The mod uses 12 Harmony patches to hook into the game's systems without modifying game files:

• Patch 1: InGameState.Enter — Initialize arson round, select arsonists
• Patch 2-3: MeetingState.Enter/Exit — Pause/resume fire during meetings
• Patch 5: TrashBin.RpcEnableFire — Detect fire events on all clients
• Patch 6: LobbySettingsTab.ShowCategories — Inject lobby settings UI
• Patch 8: TaskController.ServerGiveNewTasks — Trigger next arson task
• Patch 11: HUDTab.LateUpdate — Display arson task in HUD task list
• Patch 12: CameraController.Update + TaskHighlighter.Update — Fire alarm interaction UI + location markers

All fire mechanics use the game's native TrashBin.CmdEnableFire() / RpcEnableFire() Mirror networking — no custom network messages needed.

Upcoming Features

• Interactive task flow: Print documents task will require the player to physically use the printer and carry documents to the trash bin. The finale task will have the player actually smoke a cigarette from a cigarette pack and toss it into the stuffed bin to trigger the fire — full use of the game's built-in CigarettePack and Cigarette systems.
• Enhanced clue system: More investigative tools for Specialists to identify the arsonist.
• Fire extinguisher improvements: Proper charge tracking and respawn mechanics.

License

This project is a fan-made mod and is not affiliated with Striped Panda Studios.