Derive Macro LuaUserData 

#[derive(LuaUserData)]
{
    // Attributes available to this derive:
    #[lua]
    #[lua_impl]
}

Derive UserDataTrait for a struct, exposing public fields to Lua.

Supported field types (auto-converted to/from UdValue)

• i8..i64, isize → UdValue::Integer
• u8..u64, usize → UdValue::Integer
• f32, f64 → UdValue::Number
• bool → UdValue::Boolean
• String → UdValue::Str

Field attributes

• #[lua(skip)] — exclude from Lua
• #[lua(readonly)] — get only, no set
• #[lua(name = "...")] — custom Lua name

Struct attributes

• #[lua_impl(Display, PartialEq, PartialOrd)] — metamethods from Rust traits

Example

#[derive(LuaUserData, PartialEq, PartialOrd)]
#[lua_impl(Display, PartialEq, PartialOrd)]
struct Point {
    pub x: f64,
    pub y: f64,
    #[lua(skip)]
    internal_id: u32,
}