# RPG Layer

The RPG layer lives in `src/dusk/rpg/` and is the game-logic tier above the engine. It is initialized and ticked by `engine.c` via `rpgInit` / `rpgUpdate` / `rpgDispose`. The `rpg_t` struct is currently a stub; all meaningful state lives in the subsystems below.

## Contents

- [world.md](world.md) — scene manager, overworld map, chunks, tiles, coordinate system, camera
- [entity.md](entity.md) — entity pool, types, direction, animation, interaction, player, NPC
- [cutscene.md](cutscene.md) — cutscene system, item types, mode control, textbox
- [story.md](story.md) — story flags, items, inventory, backpack, save system

## Scene system

The scene manager (`src/dusk/scene/`) sits above the RPG layer and owns the single active scene. Scenes are identified by `scenetype_t` and registered in `SCENE_TYPES[]` (`scene/scenetype.c`) as `scenecallbacks_t` (init / update / render / dispose).

`scenedata_t` is a union so all scene structs share memory. `sceneSet(type)` defers the transition — the old scene disposes before the new one inits.

Currently the only scene is `SCENE_TYPE_OVERWORLD` → `src/dusk/scene/overworld/sceneoverworld.c`.