Space War
The game is deployed to GitHub Pages and is playable directly in your browser — no install required.
| Action | Control |
|---|---|
| Move ship | Mouse (or touch-drag on mobile) |
| Fire | Spacebar (or tap on mobile) |
| Select ship | Keys 1 – 8 |
The ship upgrades automatically as your score increases every 250 points (up to level 8). Destroy enemies to earn points; survive with your 3 lives!
SpaceWar/
├── src/lassa/net/ # Original Java source (Swing/AWT desktop app)
│ └── imagenes/ # All game sprites (shared with web version)
├── spacewar-wasm/ # Rust + WebAssembly rewrite
│ ├── src/lib.rs # Complete game logic in Rust
│ ├── Cargo.toml
│ └── www/ # Web-deployable folder
│ ├── index.html # Game page (single file, no bundler needed)
│ └── assets/ # Sprites served as static files
└── .github/workflows/
└── deploy-pages.yml # CI/CD: builds WASM → deploys to GitHub Pages
| Concern | Answer |
|---|---|
| Performance | Rust compiles to near-native speed WASM; no GC pauses |
| Safety | Memory-safe by default — no null-pointer crashes |
| Portability | Runs in any modern browser without plugins |
| Portfolio fit | Demonstrates both systems programming and web skills |
┌─────────────────────────────────────┐
│ Browser │
│ ┌─────────────┐ ┌───────────────┐ │
│ │ index.html │ │ spacewar_wasm │ │
│ │ (JS glue) │◄─│ .wasm (54 KB)│ │
│ │ │ │ │ │
│ │ • load imgs │ │ • game state │ │
│ │ • RAF loop │ │ • physics │ │
│ │ • events │ │ • collisions │ │
│ └──────┬──────┘ │ • rendering │ │
│ │ Canvas │ (web-sys) │ │
│ └────────►└───────────────┘ │
└─────────────────────────────────────┘
SpaceWarGame::tick(timestamp)— called each animation frame; runs all physics, AI, and renders to the HTML5 Canvas.SpaceWarGame::on_key_down(key, code)— keyboard input forwarded from JS.SpaceWarGame::on_mouse_move(x, y)— mouse/touch position forwarded from JS.
# Prerequisites: Rust stable, wasm-pack
rustup target add wasm32-unknown-unknown
cargo install wasm-pack
# Build
cd spacewar-wasm
wasm-pack build --target web --out-dir www/pkg
# Serve (any static file server works)
cd www
python3 -m http.server 8080
# Open http://localhost:8080The original desktop game (src/) is a pure Java Swing/AWT application using multi-threading for movement, collision detection, enemy generation, and rendering.
# Run the pre-built JAR
java -jar SpaceWar.jar