unity-version-split

Splitting C# scripts for multiple Unity API versions involves generating two file variants with preprocessor guards. This tool identifies API-version differences and creates paired files using UNITY_6000_5_OR_NEWER guards for Unity 6.5+ code and matching naming for pre-Unity 6.5 fallbacks.

For Unity 6.5 compatibility checks, use the UNITY_6000_5_OR_NEWER preprocessor define. This guard ensures version-specific C# code executes only on Unity 6.5 or newer, while the alternate fallback code path runs on older Unity versions.

Maintaining two Unity codepaths without merge conflicts is achieved by separating version-specific logic into distinct files with automated preprocessor guards. This tool generates paired variants with matching namespaces and headers, reducing duplication while keeping shared logic synchronized.

Yes, you can port Unity 6.5 scripts to older versions using preprocessor splits. This tool creates a pre-Unity 6.5 variant alongside the original, applying appropriate guards so both runtimes compile correctly within a single project without errors.

Yes, this code splitting tool preserves namespaces and copyright headers across both Unity variants. It ensures both generated files share the same namespace, retain the original copyright header, and end with matching #endif directives for assets-refresh readiness.

A limitation of using preprocessor directives for Unity version compatibility is that both codepaths remain in the project, requiring manual synchronization of shared logic. This tool minimizes duplication but cannot automatically merge divergent APIs, so developers must maintain both variants.