Bevy USPSA

A 3D first-person shooting game built like a USPSA (practical-shooting) stage, made with Bevy 0.18 (Rust). The range and targets are built from primitive meshes (no art assets) and every sound — the start buzzer, gunshots, steel pings, the music bed — is synthesized at startup. No art or audio assets.

Play

1. MAKE READY (button or Space), then wait for the random-delay buzzer.
2. Move and shoot the downrange targets:
   • Paper (tan, A/C/D zones) — needs two hits; aim centre for the A zone.
   • Steel (gray plates) — knock each one down with a hit.
   • No-shoots (white) — don't hit these; each hit is a penalty.
3. The timer stops when every target is engaged, or press STOP (Space).
4. You're scored on hit factor; NEXT STAGE (N) builds a fresh stage.

Controls

• Mobile: left thumb = move, drag the right side of the screen = look, FIRE button = shoot, RELOAD button = reload. The crosshair is where you'll hit.
• Desktop: WASD = move, mouse = look, left-click = fire, R = reload.

You carry a 10-round magazine — you can't clear a stage on one mag, so reload when you run low. A reload takes ~1.8s and that time counts against your stage clock (just like real USPSA). An empty chamber dry-fires (click) instead of shooting.

Scoring (USPSA Minor)

Hit	Points
A zone	5
C zone	3
D zone	1
Steel down	5
Miss / standing steel	−10
No-shoot hit	−10

Each paper scores its best two hits. Hit factor = max(0, points) / time.

Run (desktop)

cargo run --release

Android

./build_apk.sh                       # builds target/bevy-uspsa.apk
adb install -r target/bevy-uspsa.apk

Requires the Rust aarch64-linux-android target, cargo-apk, and an Android SDK + NDK + JDK (see build_apk.sh). The launcher icon is generated by make_icon.py.

How it works

• game.rs — the Match resource: random downrange layout, the start-buzzer / timer phase machine, ray-cast shooting from the camera into A/C/D zones, and hit-factor scoring.
• audio.rs — procedurally synthesized WAV clips (buzzer, gunshot, steel ping, paper thwack, penalty, stage-clear) plus a driving blues-rock loop.
• lib.rs — Bevy ECS app: a 3D scene (camera, lighting, range, primitive-mesh targets), first-person move/look with touch joysticks + WASD/mouse, raycast fire, and a 2D HUD overlay camera for the crosshair, controls, and results.