Asteroids · gpt-6.1-terra

Output generated Cost / run $0.0468 Runtime 76.0s

Prompt for this run

Build a playable Asteroids-style game on a canvas using procedural vector graphics. Use HTML, CSS, and JavaScript as needed. Write it to `index.html` in the current working directory using your file tools. Inline your own CSS and JavaScript. Do not use external assets, CDNs, or network requests. No third-party libraries are provided. Required behavior: - Use Left/Right to rotate the ship, Up to thrust, and Space to fire. Show the controls. The ship retains momentum and wraps around every screen edge; asteroids also wrap. - Spawn moving large asteroids. A bullet hit splits a large asteroid into smaller pieces; hitting a smallest piece removes it. Hits increase the score. - Start with three lives. A ship-asteroid collision removes one life, respawns the ship, and briefly protects it from immediate repeated damage. - Clearing all asteroids starts another wave. Losing all lives shows Game Over and a Restart control that resets score, lives, and the arena. - Keep projectile lifetime bounded and prevent gameplay keys from scrolling the page. Verify: Test rotation, thrust, and firing near the initial spawn. Check that the ship changes heading, gains momentum, and emits moving projectiles. Sample the scene to inspect screen wrapping when an object crosses an edge.

⛨ sandboxed Open in new tab ↗

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

modelgpt-6.1-terra

vendorOpenAI

harnesspi 0.87.1 · browser iteration

generated2026-10-26

METRICS

runtime76.0s

tokens in119k

tokens out7.0k

cached75k

cost / run$0.0468

Transcript · 24 messages

system

user

assistant

thinking

**Planning game dashboard design**

I need to create and test a polished dark-space game dashboard that’s responsive. The controls and overlay are important too. I think I'll focus on making the gameplay deterministic for testing in the browser. The initial spawn should be safe, and firing must work correctly. I’ll set the canvas dimensions to 960x600, ensuring it’s responsive, and then implement the game loop. Data should be accessible via `window.game` for testing, allowing for easy debugging and screenshot captures.

→ write index.html (14420 bytes)

toolResult

Successfully wrote to index.html

assistant

thinking

→ browser {"action":"inspect","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}

→ browser {"action":"screenshot","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":[],"dom":"✳\nVECTOR ARCADE\nINDEPENDENT FLIGHT SYSTEMS\nSYSTEM ONLINE\n\nARCADE / 001\n\nAsteroid Field.\n\nClear the field. Keep moving. Survive.\n\nA GAME OF SPACE & SURVIVAL ↗\nSCORE\n000000\nWAVE\n01\nLIVES\nSECTOR 01 — ASTEROID FIELD\nFLIGHT STATUS ACTIVE\nDEEP SPACE // SECTOR 01\nCOORDINATES UNAVAILABLE\n────────────────\n←\n→\nRotate\n↑\nThrust\nSPACE\nFire\nTIP: MOMENTUM IS YOUR FRIEND ✳\n© VECTOR ARCADE / INSERT COIN NOT REQUIRED\nGOOD LUCK, PILOT.","images":"attached"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

thinking

**Adjusting viewport settings**

I’m thinking about how the viewport bottom cuts off controls at 800 while the canvas height ends at 805. The user asked to show controls that should fit the viewport, so I wonder if I should adjust the canvas height. A width ratio of 1148x470 gives a bottom of 740 controls visible. If I change dimensions to height 460, I need to consider other elements like the footer. I'll also need to determine the ship spawn functionality and address key syntax testing.

→ edit

{"path":"index.html","edits":[{"oldText":"aspect-ratio: 1148 / 535","newText":"aspect-ratio: 1148 / 440"},{"oldText":"width=\"1148\" height=

toolResult

Successfully replaced 2 block(s) in index.html.

assistant

→ browser {"action":"reload","x":0,"y":0,"toX":0,"toY":0,"text":"","delta":0}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

thinking

→ browser {"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"ArrowRight","delta":0}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

thinking

**Exploring tool options**

I'm considering the key press functionality, and it seems it might be instantaneous without any frame delay. The tool supports keys like "ArrowRight" without the need to hold them down. I'm also wondering if I can use Playwright through Bash, so I'll need to check what's available in terms of packages. It feels like I'm on the right track to find a solution, but there are still a few details to nail down!

→ bash

{"command":"ls -la; node -e \"try { console.log(require.resolve('playwright')) } catch(e) { console.log('no playwright') }\"; which chromium

toolResult

total 28 drwx------ 3 node node 4096 Oct 26 23:42 . drwxrwxrwt 10 root root 4096 Oct 26 23:42 .. drwxr-xr-x 4 node node 4096 Oct 26 23:42 .home -rw-r--r-- 1 node node 14469 Oct 26 23:42 index.html no playwright

assistant

thinking

→ browser {"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"ArrowUp","delta":0}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

thinking

→ browser {"action":"key","x":0,"y":0,"toX":0,"toY":0,"text":"Space","delta":0}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

thinking

→ bash

{"command":"node <<'NODE'\nconst fs=require('fs'),vm=require('vm'),assert=require('assert');\nconst html=fs.readFileSync('index.html','utf8'

toolResult

PASS: key prevention, rotation, thrust/momentum, firing/projectile motion, ship and asteroid wrapping, large asteroid split and score

assistant

thinking

**Considering game testing**

I could test the collision wave in the game during restart in a virtual machine. It's not strictly necessary, but it might be helpful since the user asked. I think I should implement an additional script for testing. I might focus on checking the game over restart to ensure collisions don’t happen repeatedly when protections are in place. That sounds feasible, and I feel like I can definitely accomplish it!

→ bash

{"command":"node <<'NODE'\nconst fs=require('fs'),vm=require('vm'),assert=require('assert');const script=fs.readFileSync('index.html','utf8'

toolResult

PASS: collision, respawn protection, game over/restart and next-wave simulation

assistant

Created `index.html`. Checked the initial browser view and console, observed a fired projectile and asteroid edge wrapping, and tested gameplay logic in simulation. Rotation, thrust, and full game-over/restart playthroughs remain unverified through direct browser play.