nagi-bench/outputs/claude-opus-4-8/claude-code-max/dust2-arena

Dust II Arena

A from-scratch 5v5 first-person shooter prototype recreating the core areas of Dust2, built with React 18 + TypeScript + three.js. No external assets: the map, characters and weapons are procedural geometry, and every sound is synthesized with the Web Audio API. The only third-party libraries are three, react and react-dom — pathfinding, physics, the AI state machine, the render loop and the round/economy logic are all hand-written.

Run

bun install
bun run dev      # http://localhost:5173  — click the arena to lock the mouse

Build a static bundle with bun run build (output in dist/). A prebuilt, fully self-contained single file is also included as dust2-arena.html.

Controls

Action	Key
Move / Jump / Walk	WASD / Space / Shift
Fire / Scope (AWP) / Reload	Mouse1 / Mouse2 / R
Primary / Secondary / Knife	1 / 2 / 3 (or wheel)
Swap primary ⇄ AWP	B
Plant / Defuse / Pick up C4	hold E
(dead) Switch spectated teammate	Mouse1 / A / D
(dead) Take control of teammate	F / Space

What it includes

• Map — T / CT spawns, A Long, A site, Mid (with passable doors), Catwalk, B tunnels and B site, laid out on a connected tile grid with full wall + crate collision.
• Characters — box-built humanoids (separate head, torso, arms, legs), CT blue vs T tan, in a weapon-holding pose.
• Weapons — AK-47, M4A4, AWP (right-click scope), Glock / USP / Desert Eagle, and a knife, each with distinct damage, recoil, spread, magazine and reload. Hitscan with per-zone hitboxes (head = 2× body) and armor mitigation.
• Rounds — pistol-round opening, then rifle buys; C4 carry / drop / plant / defuse and full round resolution (elimination, detonation, defuse, time).
• AI — 9 bots navigate with grid A*, spot enemies through line-of-sight, fight, and push the plant / rotate to defuse.
• Death spectating — when you die you watch a living teammate in first person, cycle between teammates, and can take control of one (it stops being AI-driven).
• HUD — dynamic crosshair, health / armor, ammo, killfeed, round + bomb timers, and a live Dust2 minimap. Procedural audio for guns, reloads, footsteps, scope, hits, C4 and kills.

Layout

src/
  main.tsx, App.tsx, styles.css
  components/   GameCanvas, Hud, Minimap, Menu
  engine/
    grid.ts dust2.ts navmesh.ts collision.ts   # map + spatial systems
    weapons.ts combat.ts                        # weapon data + hitboxes
    world.ts ai.ts player.ts input.ts           # simulation + control
    scene.ts effects.ts entities/               # three.js geometry
    audio.ts store.ts constants.ts types.ts     # sound, HUD bridge, config