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rr3-server/MODDING_GUIDE.md
Daniel Elliott a7d33090ad Add full custom content & modding system 🎨 
MASSIVE FEATURE: Turn RR3 into a moddable community platform!

Controllers:
- ModdingController: Upload/manage custom cars & tracks
  - POST /modding/api/cars/upload (custom car upload)
  - POST /modding/api/tracks/upload (custom track upload)
  - GET /modding/api/cars (list custom content)
  - GET /modding/api/content (search & filter)
  - POST /modding/api/modpack/create (bundle mods)
  - GET /modding/api/modpacks (browse packs)
  - DELETE /modding/api/content/{id} (moderation)

Database:
- Added ModPack entity for mod bundles
- Extended Car with IsCustom, CustomAuthor, CustomVersion
- Extended GameAsset with IsCustomContent, CustomAuthor
- Supports versioning, ratings, download tracking

Configuration:
- CustomAssetsPath & ModsPath settings
- EnableModding flag
- Upload size limits (100MB cars, 200MB tracks)

Documentation:
- MODDING_GUIDE.md: Complete modding system guide
  - API endpoints & examples
  - Content creation workflow
  - Tools & resources
  - Community guidelines
  - Example scripts

Features:
✅ Upload custom cars (models, textures, audio)
✅ Upload custom tracks (layouts, scenery)
✅ Create & share mod packs
✅ Version control & ratings
✅ Community content discovery
✅ Automatic MD5 verification
✅ Organized file storage

This makes RR3 a COMMUNITY-DRIVEN platform that can
live forever with user-generated content! 🎮🏎️

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-02-18 01:04:31 -08:00

9.6 KiB
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RR3 Community Server - Custom Content & Modding System

Turn RR3 into a MODDABLE racing game!

🎨 Overview

Your RR3 Community Server now supports FULL CUSTOM CONTENT:

  • ✅ Custom cars (models, textures, audio)
  • ✅ Custom tracks (layouts, scenery)
  • ✅ Mod packs (bundles of content)
  • ✅ Community sharing
  • ✅ Version control
  • ✅ Rating system

🚀 Features

For Players:

  • Download & install custom cars/tracks
  • Subscribe to mod packs
  • Rate & review content
  • Automatic updates

For Modders:

  • Upload custom content via API
  • Version your mods
  • Track download stats
  • Build mod packs
  • Community showcase

📦 Custom Car Upload

API Endpoint:

POST /modding/api/cars/upload
Content-Type: multipart/form-data

Required Files:

File Type Max Size Description
Model3D .pak 50 MB 3D car model
Thumbnail .png 5 MB Preview image
Textures .pvr (optional) 20 MB Car skin/paint
EngineAudio .ogg (optional) 10 MB Engine sound

Metadata:

{
  "CarName": "Custom Bugatti Chiron",
  "Manufacturer": "Bugatti",
  "ClassType": "S",
  "PerformanceRating": 95,
  "Year": 2024,
  "CashPrice": 500000,
  "GoldPrice": 1000,
  "Description": "Custom tuned Chiron with 1600HP",
  "AuthorName": "YourUsername",
  "Version": "1.0"
}

Example (PowerShell):

$form = @{
    Model3D = Get-Item "bugatti_chiron.pak"
    Thumbnail = Get-Item "bugatti_thumb.png"
    Textures = Get-Item "bugatti_textures.pvr"
    EngineAudio = Get-Item "w16_engine.ogg"
    CarName = "Custom Bugatti Chiron"
    Manufacturer = "Bugatti"
    ClassType = "S"
    PerformanceRating = 95
    Year = 2024
    CashPrice = 500000
    GoldPrice = 1000
    Description = "Custom tuned Chiron"
    AuthorName = "MyUsername"
    Version = "1.0"
}

Invoke-RestMethod -Uri "https://localhost:5001/modding/api/cars/upload" `
    -Method POST `
    -Form $form

Response:

{
  "success": true,
  "carId": "custom_a7f3b2e9d1c4",
  "name": "Custom Bugatti Chiron",
  "message": "Custom car uploaded successfully!",
  "files": {
    "model": "E:\\Assets\\custom\\cars\\custom_a7f3b2e9d1c4\\model.pak",
    "thumbnail": "E:\\Assets\\custom\\cars\\custom_a7f3b2e9d1c4\\thumbnail.png"
  }
}

🏁 Custom Track Upload

API Endpoint:

POST /modding/api/tracks/upload
Content-Type: multipart/form-data

Required Files:

File Type Max Size Description
TrackData .pak 100 MB Track layout & data
Thumbnail .png 5 MB Preview image
Scenery .pak (optional) 80 MB Environment assets

Metadata:

{
  "TrackName": "Custom Touge Pass",
  "Country": "Japan",
  "Description": "Mountain pass inspired by Akina",
  "AuthorName": "YourUsername",
  "Version": "1.0",
  "LengthKm": 5.2,
  "Corners": 42
}

📋 Get Custom Content

List Custom Cars:

GET /modding/api/cars

Response:

{
  "success": true,
  "count": 15,
  "cars": [
    {
      "carId": "custom_a7f3b2e9d1c4",
      "name": "Custom Bugatti Chiron",
      "manufacturer": "Bugatti",
      "classType": "S",
      "performanceRating": 95,
      "author": "ModderName",
      "version": "1.0",
      "createdAt": "2026-02-18T09:00:00Z"
    }
  ]
}

List All Custom Content:

GET /modding/api/content?type=car_model&author=Username

🎁 Mod Packs

Create a Mod Pack:

POST /modding/api/modpack/create
Content-Type: application/json

Body:

{
  "PackName": "JDM Legends Pack",
  "Author": "ModderName",
  "Description": "Classic Japanese sports cars",
  "Version": "1.0",
  "CarIds": [
    "custom_skyline_gtr",
    "custom_supra_mk4",
    "custom_rx7_fd"
  ]
}

Response:

{
  "success": true,
  "packId": "modpack_3f2a1b9c",
  "name": "JDM Legends Pack",
  "downloadUrl": "/modding/api/modpack/modpack_3f2a1b9c/download"
}

Get Mod Packs:

GET /modding/api/modpacks

🛠️ Creating Custom Cars

Step 1: Extract Original Car Model

Use tools like:

  • Unity Asset Bundle Extractor (for .pak files)
  • Blender (for 3D editing)
  • Photoshop/GIMP (for textures)

Step 2: Edit the Model

1. Import .pak file into Blender
2. Modify mesh (body kit, spoilers, etc.)
3. Adjust materials/shaders
4. Export as .pak with same structure

Step 3: Create Textures

- Extract original .pvr textures
- Edit in Photoshop
- Convert back to .pvr format
- Pack into asset bundle

Step 4: Add Custom Audio

- Record or find engine sound (.wav)
- Convert to .ogg format
- Match RR3 audio structure

Step 5: Test & Upload

# Test locally first
Copy-Item custom_car.pak -Destination "E:\rr3\RR3CommunityServer\Assets\custom\cars\test\"

# Upload to server
.\upload-custom-car.ps1 -CarPak "custom_car.pak" -Thumbnail "thumb.png"

🏗️ Creating Custom Tracks

Track Requirements:

Minimum:

  • Track mesh (road surface)
  • Collision boundaries
  • Start/finish line
  • Pit lane (optional)

Recommended:

  • Scenery (buildings, trees)
  • Lighting setup
  • Weather support
  • Multiple layouts

Tools Needed:

  • Unity (RR3 uses Unity engine)
  • Blender (3D modeling)
  • Track editor plugins

Process:

1. Design track layout (top-down view)
2. Create 3D mesh in Blender
3. Import to Unity
4. Add collisions & checkpoints
5. Add scenery & lighting
6. Build asset bundle (.pak)
7. Test in game
8. Upload to server

🎮 In-Game Integration

How Players Get Custom Content:

Option 1: Automatic (Server-Side)

1. Player opens dealership
2. Sees "CUSTOM" category
3. Custom cars appear with "MOD" badge
4. Purchase with in-game currency
5. Download happens automatically

Option 2: Manual (Mod Browser)

1. Player opens "Mods" menu (custom APK)
2. Browses available mods
3. Clicks "Subscribe"
4. Content downloads & installs
5. Available in garage

📊 Modding Statistics

Track Your Mods:

GET /modding/api/content?author=YourUsername

See:

  • Download count
  • Ratings
  • Comments
  • Version history

🔒 Content Guidelines

Allowed:

✅ Original creations ✅ Inspired-by designs (non-infringing) ✅ Fictional cars/tracks ✅ Performance mods ✅ Visual enhancements

NOT Allowed:

❌ Stolen assets from other games ❌ Copyright violations ❌ Malicious content ❌ Inappropriate content ❌ Game-breaking exploits

🚧 Advanced: Mod Pack Creation

Create a Themed Collection:

Example: "Formula Legends Pack"

{
  "PackName": "Formula Legends Pack",
  "Description": "Iconic F1 cars from 1960-2000",
  "Version": "2.0",
  "CarIds": [
    "custom_lotus_49",
    "custom_mclaren_mp4_4",
    "custom_ferrari_f2004",
    "custom_williams_fw14b"
  ],
  "TrackIds": [
    "custom_old_monaco",
    "custom_silverstone_classic"
  ]
}

Versioning:

v1.0 - Initial release (4 cars)
v1.1 - Bug fixes
v2.0 - Added 2 custom tracks
v2.1 - Performance tuning

🔧 Server Configuration

Enable/Disable Modding:

appsettings.json:

{
  "ServerSettings": {
    "EnableModding": true,
    "MaxCustomCarUploadSizeMB": 100,
    "MaxCustomTrackUploadSizeMB": 200,
    "RequireModeratorApproval": false,
    "AllowNSFWContent": false
  }
}

🌐 Community Features (Future)

Planned:

  • Web-based mod browser
  • Rating & review system
  • Mod dependency management
  • Automatic conflict resolution
  • Workshop integration
  • Mod showcase page
  • Creator profiles
  • Donation support

📚 Resources

Modding Tools:

  • Unity Asset Bundle Extractor - Extract/edit .pak files
  • Blender - 3D modeling
  • Audacity - Audio editing
  • GIMP/Photoshop - Texture editing
  • PVRTexTool - Convert to .pvr format

Community:

  • Discord: RR3 Modding Community (create one!)
  • Reddit: r/RR3Mods (create one!)
  • GitHub: Share your tools

🎯 Quick Start (Modders)

  1. Extract original assets from game
  2. Edit model/textures in Blender/Photoshop
  3. Export as .pak with correct format
  4. Test locally by copying to Assets/custom/
  5. Upload via API endpoint
  6. Share with community!

🎯 Quick Start (Players)

  1. Browse mods: GET /modding/api/cars
  2. Download: Game handles automatically
  3. Install: Appears in garage
  4. Race: Just like any other car!

💡 Example: Full Workflow

Creating & Uploading a Custom Nissan GT-R:

# Step 1: Prepare files
$modelPak = "E:\rr3\mods\gtr_r35_custom.pak"
$thumbnail = "E:\rr3\mods\gtr_thumbnail.png"
$textures = "E:\rr3\mods\gtr_textures.pvr"

# Step 2: Upload
$response = Invoke-RestMethod `
    -Uri "https://localhost:5001/modding/api/cars/upload" `
    -Method POST `
    -Form @{
        Model3D = Get-Item $modelPak
        Thumbnail = Get-Item $thumbnail
        Textures = Get-Item $textures
        CarName = "Nissan GT-R R35 Nismo"
        Manufacturer = "Nissan"
        ClassType = "A"
        PerformanceRating = 78
        Year = 2024
        CashPrice = 150000
        GoldPrice = 500
        Description = "Custom tuned GT-R with 700HP"
        AuthorName = "GTR_Fanatic"
        Version = "1.0"
    }

Write-Host "✅ Uploaded! Car ID: $($response.carId)"

# Step 3: Players can now download it!

🏆 MAKE RR3 COMMUNITY-DRIVEN!

With this modding system, Real Racing 3 can LIVE FOREVER with community-created content!

  • ✅ Endless new cars
  • ✅ Unlimited tracks
  • ✅ Community creativity
  • ✅ Game never dies!

Start modding today! 🎨🏎️💨

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