Roadmap

Done

• hcc builds, installs and runs on Linux
• SDL2 window, input and OpenGL 3.3 core context from pure HolyC
• Grid level from an ASCII map with generated wall, floor and ceiling meshes
• Procedural textures and bitmap font generated in HolyC
• Point lighting, fog, low-resolution render target, post-processing
• Player movement, mouse look, stamina, lantern
• Warden AI with sight, hearing, BFS pathfinding and four behaviour states
• Relics, gate, win and loss conditions
• Title, pause and end screens, HUD
• Headless gameplay test suite and render capture tool
• Build scripts for Linux, macOS and Windows through WSL2

Next

Ordered roughly by impact on the game.

• Audio. Footsteps, the warden's steps and breathing, the gate. SDL2's audio API is enough, and sound would do more for the horror than any visual change.
• Confirm macOS and WSL2. Run both build paths on real machines and fix whatever turns up.
• CI for the game. Build hcc and run test.sh on Linux in GitHub Actions.
• Settings. Mouse sensitivity, invert Y, key rebinding, saved to a file.
• More levels. The loader already takes any rectangular ASCII map; this needs a level list and a transition.
• Fixed-timestep simulation. Makes behaviour independent of frame rate and replays deterministic.

Later

• Image file loading for textures (for example, uncompressed TGA, which is easy to parse in HolyC)
• Doors, hiding spots, and items that make noise elsewhere
• A second enemy type that uses the existing flow field differently
• Gamepad support through SDL's game controller API
• Upstream fixes to hcc for the float comparison and struct return bugs this project works around

Not planned

• TempleOS compatibility. The project uses the language, not the operating system.
• Native Windows build in this repo. That depends on a Windows backend in hcc.
• A general-purpose engine. The code is organised so parts can be reused, but it stays shaped around this game until a second game needs it.