arena-native #

A standalone first-person Metal + Swift renderer of AC's arena piece.

The movement and world are faithful Swift ports of the shared JS modules, so the feel matches the web arena 1:1:

PMove.swift ← system/public/aesthetic.computer/lib/pmove.mjs (Quake-style friction + ground/air accelerate, obstacle push-out, gravity, jump, crouch — same coordinate convention: +X right, +Y up, +Z forward).
ArenaWorld.swift ← system/public/aesthetic.computer/lib/arena-world.mjs (four corner pillars, center totem, two S-curve walls, per-obstacle colors, ground bounds, physics tuning).

The Metal layer replaces AC's Form/cam-doll immediate-mode renderer:

Mesh.swift — CPU geometry builders (ground grid, lit boxes/cylinders, edge lines), all baked in world space.
Renderer.swift — Metal pipelines + fixed-step (120 Hz) physics + camera.
Shaders.swift — Metal shader source, compiled at runtime from a string (no .metallib build step) — Lambert-lit triangles + flat lines.
MathUtils.swift — right-handed perspective + look-at (Metal 0..1 depth).
main.swift — NSApplication + an input-capturing MTKView.

Run #

swift run            # from arena-native/
# or
swift build && .build/debug/ArenaNative

Input	Action
Click	Capture the pointer (FPS mouse-look)
Mouse	Look
W A S D	Move (strafe-jump physics apply in air)
Space	Jump
Shift	Crouch
Esc	Release the pointer

Ported physics + world, Metal first-person render, mouselook, collision.
Grenades + explosions (port fireGrenade/detonate from arena.mjs).
HUD (speedometer, FPS, crosshair).
Remote players + networking (the JS server is a generic WorldManager({ prefix: "arena" }) in session-server/session.mjs; WebSocket snaps are the reachable path, geckos.io UDP is WebRTC).
Re-enable back-face culling once winding is verified (currently .none).