Space Invaders · laguna-xs-2.1
Build a playable Space Invaders game on a canvas: a player cannon that moves and shoots, a descending grid of aliens that advance and fire back, destructible bunkers, score, and lives. Procedural graphics only, no external assets.
transcript · 6 messages
Build a playable Space Invaders game on a canvas: a player cannon that moves and shoots, a descending grid of aliens that advance and fire back, destructible bunkers, score, and lives. Procedural graphics only, no external assets.
thinking
The user wants me to build a complete Space Invaders game in a single HTML file with inline CSS and JavaScript. Let me plan this out: 1. HTML structure with a canvas element 2. CSS for styling 3. JavaScript for the game logic Key features to implement: - Player cannon that moves left/right and shoots - Descending grid of aliens that advance and can shoot - Destructible bunkers - Score and lives display - Procedural graphics (no external images) I'll create a comprehensive game with all these elements. Let me write the full implementation.
/tmp/ws/index.html (19225 bytes)Successfully wrote 19225 bytes to /tmp/ws/index.html
thinking
I've created a complete Space Invaders game in a single HTML file. Let me verify it's there and then summarize what was created.
{"command":"ls -la /tmp/ws/index.html"}-rw-r--r--. 1 node node 19225 Aug 2 03:25 /tmp/ws/index.html
thinking
The file has been created successfully. Let me verify its contents to make sure everything is in order.
The Space Invaders game has been built and saved to `/tmp/ws/index.html`. Here's what's included: **Features:** - **Player cannon** - Moves left/right with arrow keys, shoots with Space - **Alien grid** - 5 rows of 11 aliens that move horizontally and descend when hitting edges - **Alien shooting** - Random aliens fire back at the player - **Destructible bunkers** - 3 bunkers made of block grids that can be destroyed by both bullets and alien fire - **Score system** - Points based on alien type (10/20/30 points for red/green/blue aliens) - **Lives system** - 3 lives, loses one when hit by alien bullet - **Level progression** - Speed increases each level, aliens respawn - **Explosions** - Visual feedback when enemies explode or bunkers are hit - **Game over** - Shows score when player loses all lives **Gameplay:** - Arrow keys: Move left/right - Space: Shoot - Enter: Start/Restart All graphics are procedural - the player cannon, alien saucers with antennae, bunkers, and bullets are drawn with canvas primitives (rectangles, arcs, lines). No external assets or network requests needed.
TAKE IT TO CODE
A single self-contained HTML file — copy it and open in any browser, or reuse the prompt with your own pi-agent run.
RUN
EVALUATION
Space Invaders with colored alien rows, bunkers, cannon, and enemy fire appear once game starts via keyboard input.
Vision grade · anthropic/claude-sonnet-5
MEASUREMENTS
Raw readings from the capture, not a verdict — the grade above is the only judgement. Percentages are how much of the screen changed; the measure under-reports sparse motion on a dark background.