Getting Started

Install (players)

1. Install MelonLoader 0.7.3+ for Schedule I.
2. Install S1API (ifBars/S1API_Forked) - its DLLs go in Mods/ and Plugins/ per its own instructions.
3. Drop SideHustle.dll into your …/Schedule I/Mods/ folder. (A Thunderstore mod manager like r2modman/Gale pulls MelonLoader + S1API in automatically.)
4. Install one or more gamemode mods that use Side Hustle - they appear under the Side Hustle menu entry.

On its own Side Hustle just adds the (empty) menu entry; the gamemodes come from other mods.

Register your first gamemode (mod authors)

In a MelonLoader mod, reference SideHustle.dll, declare it as an optional dependency, and register from OnInitializeMelon:

using SideHustle;
using MelonLoader;

[assembly: MelonOptionalDependencies("SideHustle")]

public sealed class Core : MelonMod
{
    public override void OnInitializeMelon()
    {
        SideHustle.API.Register(new GamemodeDescriptor
        {
            Id = "you.yourmode",                  // stable, unique
            DisplayName = "Your Mode",
            Description = "What your gamemode does.",
            Author = "You",
            Support = GamemodeSupport.Singleplayer,   // or Multiplayer / Hybrid
            Surface = GamemodeSurface.MenuSpace,      // overlay on the menu (no save), or World
            OnLaunchSingleplayer = ctx => Start(ctx),
            OnExitToHub = ctx => CleanUp()
        });
    }

    private void Start(LaunchContext ctx) { /* build your overlay / start your mode */ }
    private void CleanUp() { /* tear down */ }
}

That is the whole integration. Selecting your gamemode in the menu calls OnLaunchSingleplayer. When your mode finishes (e.g. the player clicks Back), call ctx.ReturnToHub() to return to the menu. Full details: API Reference.

Where things live

Path	What
…/Schedule I/Mods/SideHustle.dll	The hub + the public API
UserData/MelonPreferences.cfg -> [SideHustle_01_Main]	The Enabled toggle