Your first native mod

1. Make the project:

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   cargo horizon-mod new my_mod --template native

   It writes horizon-mod.toml (the manifest, with the exact build pins under [native]), Cargo.toml and src/lib.rs, which implements one hook.

2. Look at the hook. Each method of Hooks is a hook point; implement the ones the mod needs. Every impl Hooks carries #[mod_api::horizon_mod], which subscribes the mod to just the methods in that block:

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   #[mod_api::horizon_mod]
   impl Hooks for Mod {
       fn server_tick(&self, host: &mut dyn ServerHost, _: &mut ServerTickEvent<'_>) {
           let _ = count(host);
       }
   }

3. Build and run it in the launcher: horizon-launcher native-build . --instance <instance> --trust-native-code. Add --profile developer while developing for an unoptimized game crate. The choice is remembered for that instance.

Next: Native mods for what the launcher does, Trait mods for Parts and attachments, and Injections for the moment no hook covers.