unity-compile-fixer

# Unity Compile Fixer

## Overview

This skill enables automatic detection and resolution of Unity C# compilation errors by leveraging VSCode's diagnostic system. It collects real-time errors from the OmniSharp C# language server, analyzes error patterns against a curated database of common Unity issues, and proposes context-aware solutions for user approval before applying fixes.

## When to Use This Skill

Use this skill when:
- Unity projects report C# compilation errors in VSCode
- Need to diagnose the root cause of Unity compiler errors (CS* error codes)
- Want automated fix suggestions for common Unity scripting issues
- Working with Unity projects that have version control integration (Git, Unity Collaborate, Plastic SCM)
- Need to handle Unity .meta file conflicts

**Example user requests:**
- "Check Unity compilation errors and help me fix them"
- "My Unity project has compiler errors, can you diagnose and fix?"
- "Unity scripts are not compiling, what's wrong?"
- "Fix the C# errors in my Unity project"

## Workflow

Follow this workflow when the skill is invoked:

### 1. Detect Compilation Errors

Use the `mcp__ide__getDiagnostics` tool to collect errors from VSCode:

```typescript
// Collect all project diagnostics
mcp__ide__getDiagnostics()

// Or target specific Unity script files
mcp__ide__getDiagnostics({ uri: "file:///path/to/PlayerController.cs" })
```

Filter the diagnostics to focus on Unity-relevant errors:
- **Severity**: Only process errors with `severity: "Error"` (ignore warnings)
- **Source**: Only process `source: "csharp"` (OmniSharp C# diagnostics)
- **Error Codes**: Focus on CS* compiler error codes (e.g., CS0246, CS0029, CS1061)

### 2. Analyze Error Patterns

For each detected error:

1. **Extract error information:**
   - File path and line number from `uri` and `range`
   - Error code from `message` (e.g., "CS0246")
   - Full error message text

2. **Match against error pattern database:**
   - Load `references/error-patterns.json`