Guidebook Next Languages

What “more languages coming” means concretely: Python, Go, and C# scripts exist as preview surfaces today. Build production mods in Lua/C#/JS/Rust; prototype here only, pinned and verified.

Python — beta, small bridge (PythonFFIBridge, pythonnet 3.0.5)

Snake-case calls: log_info / warning / error, get/set_player_money, get/set_player_xp, get_server_count / get_broken_server_count / dispatch_repair_server, get_time_of_day / get_day / trigger_save, get_player_position → {x,y,z}, subscribe_event(id, cb), on(hook, cb) → {hook_name, trigger}; lifecycle methods are no-ops. Host: GregPythonHost (HostId "python", .py, requires Python.Runtime).

Staleness warning: examples/Python/example_mod/main.py mirrors the retired subscribe/numeric-Events shape, not this bridge. Verify every call against PythonFFIBridge.cs before shipping anything.

Rust — native SDK (graduated)

Rust has its own track: Guidebook Rust 01 Setup + Guidebook Rust 02 Project (templates/rust/: Cargo.toml, safe greg.rs bindings, example lib.rs). The bridge table stays ABI v1; unbound slots are safe no-ops.

Go — alpha FFI (GoFFIBridge)

C ABI via the versioned GameApiTable (ApiTableVersion; compat table API_VERSION = 19, v1–v13). v7 Steam/P2P slots are inert no-ops for ABI stability — the game owns networking (Developer Native Coop). Sketch: examples/Go/example_mod/main.go. Per-language SDKs: sdk/packs/greg-*-sdk.zip.

C# scripts — alpha, unverified (GregCSharpScriptBridge, GregCSharpCompiler, IGregCSharpMod)

Roslyn runtime for .cs scripts. Prefer compiled C# mods (Guidebook CSharp 01 Setup) for anything serious until this graduates.

How to prototype safely

1. Pin the framework version you tested (VERSION 1.2.3) and re-verify each call in-game — preview surfaces change.
2. Keep preview code read-only and local (no saves, no UI, no networking) until its storage story exists.
3. Watch the guidebook: tracks graduate here (JS did) with setup + project chapters when their surface stabilizes.