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unity-mcp/README-DEV.md

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Unity MCP Development Tools

Welcome to the Unity MCP development environment! This directory contains tools and utilities to streamline Unity MCP core development.

🚀 Available Development Features

✅ Development Deployment Scripts

Quick deployment and testing tools for Unity MCP core changes.

🔄 Coming Soon

  • Development Mode Toggle: Built-in Unity editor development features
  • Hot Reload System: Real-time code updates without Unity restarts
  • Plugin Development Kit: Tools for creating custom Unity MCP extensions
  • Automated Testing Suite: Comprehensive testing framework for contributions
  • Debug Dashboard: Advanced debugging and monitoring tools

Development Deployment Scripts

These deployment scripts help you quickly test changes to Unity MCP core code.

Scripts

deploy-dev.bat

Deploys your development code to the actual installation locations for testing.

What it does:

  1. Backs up original files to a timestamped folder
  2. Copies Unity Bridge code to Unity's package cache
  3. Copies Python Server code to the MCP installation folder

Usage:

  1. Run deploy-dev.bat
  2. Enter Unity package cache path (example provided)
  3. Enter server path (or use default: %LOCALAPPDATA%\Programs\UnityMCP\UnityMcpServer\src)
  4. Enter backup location (or use default: %USERPROFILE%\Desktop\unity-mcp-backup)

restore-dev.bat

Restores original files from backup.

What it does:

  1. Lists available backups with timestamps
  2. Allows you to select which backup to restore
  3. Restores both Unity Bridge and Python Server files

Finding Unity Package Cache Path

Unity package cache is typically located at:

X:\UnityProject\Library\PackageCache\com.coplaydev.unity-mcp@1.0.0

To find it:

  1. Open Unity Package Manager
  2. Select "Unity MCP" package
  3. Right click on the package and "Show in Explorer"
  4. Navigate to the path above with your username and version

Workflow

  1. Make changes to your source code in this directory
  2. Deploy using deploy-dev.bat
  3. Test in Unity (restart Unity Editor first)
  4. Iterate - repeat steps 1-3 as needed
  5. Restore original files when done using restore-dev.bat

Troubleshooting

"Path not found" errors running the .bat file

  • Verify Unity package cache path is correct
  • Check that Unity MCP package is actually installed
  • Ensure server is installed via MCP client

"Permission denied" errors

  • Run cmd as Administrator
  • Close Unity Editor before deploying
  • Close any MCP clients before deploying

"Backup not found" errors

  • Run deploy-dev.bat first to create initial backup
  • Check backup directory permissions
  • Verify backup directory path is correct