rglua

This is a crate that contains bindings for using the lua c api in garrysmod through bindings using the rust libloading library. Can be used for either binary modules or just manual injections into gmod, like with Autorun-rs

This works by finding a lua_shared.dll file relative to the currently running program, so you need to make sure your file is either in GarrysMod/bin/ or GarrysMod/garrysmod/bin for srcds servers. The library will panic if the file is not found.

More information on binary modules can be found on the garrysmod wiki: Creating Binary Modules and an example can be found at the bottom of this file.

Usage

Add this to your Cargo.toml file ```toml [lib] crate-type = ["cdylib"] # This tells rust we want to create a .dll file that links to C code.

[dependencies] rglua = "0.6.0" ```

Building

After installing rust, just run cargo build --release.

If you are targeting 32 bit make sure to install the toolchain and build to it: bash rustup target add i686-pc-windows-msvc cargo build --release --target=i686-pc-windows-msvc

Notes

• I have never tested this outside of Windows and will not be able to. If there are any issues on other platforms, I will gladly accept any PRs you may make but I won't be able to help you myself.

• The nature of this crate is super unsafe and sort of defeats the purpose of rust's safety because of the interfacing you require to unsafe C code and the nature of linking to them.

Example Module

```rust use rglua::prelude::*;

[no_mangle]

pub extern fn gmod13open(state: LuaState) -> i32 { luagetglobal( state, cstr!("print") ); luapushstring( state, cstr!("Hello from rust!") ); luacall( state, 1, 0 );

// or
printgm!(state, "Hello world!");
0

}

[no_mangle]

pub extern fn gmod13close(state: LuaState) -> i32 { 0 } ```

Acknowledgements

garrysmod_common

This is heavily based off of garrysmodcommon, in how we export the luashared functions and trying to replicate everything from the Lua C Api.