Mario-style platformer · mistral-large-4-0

Output saved · Stopped by an API error Cost / run $0.1596 Runtime 599.5s

A model request failed and its retries ran out. The output is the HTML saved before that.

Prompt for this run

Build a playable side-scrolling platformer using the provided Phaser library, with a classic Mario-inspired visual style. 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. Use the provided `phaser.min.js` (global `Phaser`) through a plain local script tag; the runner will inline it into the final artifact. Required behavior: - Provide one completable scrolling level with solid platforms, gaps, collectible coins, patrolling enemies, and a goal flag. - Use Left/Right or A/D to run and Space to jump. Display the controls. Apply gravity and platform collision; prevent repeated mid-air jumping. - Landing on an enemy from above defeats it and bounces the player upward. Side contact or falling into a gap causes a loss state. - Collecting a coin removes it and increases the displayed count once. Reaching the goal flag shows a win state. - Keep the camera following the player within level bounds. Provide Restart that resets coins, enemies, player, and camera. - Generate all graphics using Phaser Graphics or generated textures. Do not load image or audio assets. Verify: Test running and jumping near the starting area. Check landing on a nearby platform and camera following as the player moves. Use Restart and check that the initial player position, visible coins, and camera position return.

⛨ 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

modelmistral-large-4-0

vendorMistral AI

harnesspi 0.87.1 · browser iteration

generated2026-10-06

METRICS

runtime599.5s

tokens in195k

tokens out14k

cached5.1k

cost / run$0.1596

Transcript · 40 messages

system

user

assistant

→ bash {"command":"ls -la /tmp/job-LtYrlE && ls -la /tmp/job-LtYrlE/phaser.min.js 2>/dev/null | head -5"}

toolResult

total 1168 drwx------ 3 node node 4096 Oct 6 15:15 . drwxrwxrwt 6 root root 4096 Oct 6 15:15 .. drwxr-xr-x 3 node node 4096 Oct 6 15:15 .home -rw-r--r-- 1 node node 1181917 Oct 6 15:15 phaser.min.js -rw-r--r-- 1 node node 1181917 Oct 6 15:15 /tmp/job-LtYrlE/phaser.min.js

assistant

→ write /tmp/job-LtYrlE/index.html (20605 bytes)

toolResult

Successfully wrote to /tmp/job-LtYrlE/index.html

assistant

→ browser {"action":"inspect"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

The game loads but textures aren't rendering (black squares with green borders = missing textures). The issue is likely that `scene.make.graphics` with `generateTexture` needs the graphics to be added or the texture generation happens before the texture manager is ready. Let me check - actually the issue is that `make.graphics({add:false})` creates a graphics object but `generateTexture` should still work. The black squares suggest textures failed to generate. Let me investigate by checking the console more and testing texture generation. Actually, the problem might be that I'm calling `g.destroy()` at the end which could destroy textures? No, destroy on graphics shouldn't remove generated textures. Let me check if the issue is that `generateTexture` needs the renderer to be ready. Let me add a preload-style approach or use `scene.textures` directly. Let me test with a simpler approach - generate textures in a `preload` method or use `scene.sys.textures`.

→ browser {"action":"reload"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

Textures are missing (black squares with green borders = Phaser's missing texture placeholder). The issue is that `scene.make.graphics({add:false})` creates a graphics object but `generateTexture` might not work properly when the graphics isn't added to the scene, or there's a timing issue. Let me fix by using `scene.add.graphics()` instead, or better yet, generate textures in a `preload` function. Actually, the real issue might be that `make.graphics` with `add:false` doesn't properly render to texture. Let me use `scene.add.graphics()` and then destroy it, or use the texture manager directly. Actually, looking at Phaser docs, `generateTexture` on a Graphics object should work even without adding it. The issue might be that I'm calling `g.destroy()` which might be destroying the generated textures. Let me remove the destroy call and also try adding the graphics to the scene first. Wait - actually the problem could be simpler. The `make.graphics({x:0, y:0, add:false})` creates a graphics object, but when we call `generateTexture`, it renders the graphics to a texture. However, if the graphics object isn't part of the scene's display list, the rendering might not work correctly in WebGL. Let me use `scene.add.graphics()` instead.

→ edit

{"path":"/tmp/job-LtYrlE/index.html","oldText":"  function makeTextures(scene) {\n    // Player (Mario-like): red hat, skin face, blue overa

toolResult

Successfully replaced 1 block(s) in /tmp/job-LtYrlE/index.html.

assistant

→ edit

{"path":"/tmp/job-LtYrlE/index.html","oldText":"    g.generateTexture('bush', 48, 24);\n\n    g.destroy();\n  }","newText":"    g.generateTe

toolResult

Successfully replaced 1 block(s) in /tmp/job-LtYrlE/index.html.

assistant

→ browser {"action":"reload"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

Still missing textures. The `generateTexture` from a Graphics object isn't working. The issue is likely that in Phaser 3, `Graphics.generateTexture()` requires the graphics to have been rendered at least once, or there's a WebGL context issue. Let me try a different approach - use `scene.textures.generate()` or create a canvas-based texture directly using `scene.textures.addCanvas()`. Actually, the best approach is to draw to an offscreen canvas and use `scene.textures.addImage()` or create a `Phaser.Textures.CanvasTexture`. Let me use raw canvas approach:

→ edit

{"path":"/tmp/job-LtYrlE/index.html","oldText":"  // ---------- Generated Textures ----------\n  function makeTextures(scene) {\n    // Play

toolResult

Successfully replaced 1 block(s) in /tmp/job-LtYrlE/index.html.

assistant

→ browser {"action":"reload"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant

Still missing textures. The `addCanvas` approach might also have issues. Let me check if the textures are actually being created by adding some console logging, and also check if the issue is that `create` runs before textures are ready. Actually, the problem might be that `scene.textures.addCanvas` needs the texture manager to be ready. Let me try using `preload` to generate textures, or check if there's an error being swallowed. Let me add console logging to debug:

→ edit

{"path":"/tmp/job-LtYrlE/index.html","oldText":"  function drawToCanvas(scene, key, w, h, drawFn) {\n    if (scene.textures.exists(key)) ret

toolResult

Successfully replaced 1 block(s) in /tmp/job-LtYrlE/index.html.

assistant

→ edit

{"path":"/tmp/job-LtYrlE/index.html","oldText":"    scene: {\n      create: function () { createScene(this); },\n      update: function (tim

toolResult

Successfully replaced 1 block(s) in /tmp/job-LtYrlE/index.html.

assistant

→ browser {"action":"reload"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

{"console":["warning: An iframe which has both allow-scripts and allow-same-origin for its sandbox attribute can escape its sandboxing.","log: %c %c %c %c %c Phaser v3.80.1 (WebGL | Web Audio) %c https://phaser.io background: #ff0000 background: #ffff00 background: #00ff00 background: #00ffff color: #ffffff; background: #000000 background: transparent","log: preload called","log: created texture: player exists: true","log: created texture: coin exists: true","log: created texture: enemy exists: true","log: created texture: enemyDead exists: true","log: created texture: brick exists: true","log: created texture: ground exists: true","log: created texture: block exists: true","log: created texture: pole exists: true","log: created texture: flag exists: true","log: created texture: cloud exists: true","log: created texture: bush exists: true","log: textures after make: [__NORMAL, __DEFAULT, __MISSING, __WHITE, player, coin, enemy, enemyDead, brick, ground, block, pole, flag, cloud, bush]","log: create called, player tex exists: true","warning: [.WebGL-0x386400180800]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x386400180800]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x386400180800]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels","warning: [.WebGL-0x386400180800]GL Driver Message (OpenGL, Performance, GL_CLOSE_PATH_NV, High): GPU stall due to ReadPixels (this message will no longer repeat)"],"dom":"","images":"attached"}

assistant

Excellent! Textures are now rendering! The game looks great - Mario-style player, coins, enemies (Goombas), brick platforms, question blocks, clouds, hills, and ground. The player is visible at the start position. Now let me test the gameplay - running, jumping, camera follow, etc.

→ browser {"action":"key","key":"ArrowRight"}

toolResult

Frame 1, +0ms

[Browser image supplied to model]

toolResult

Frame 1, +0ms

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toolResult

Frame 1, +0ms

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toolResult

Frame 1, +0ms

[Browser image supplied to model]

toolResult

Frame 1, +0ms

[Browser image supplied to model]

toolResult

Frame 1, +0ms

[Browser image supplied to model]

toolResult

Frame 1, +0ms

[Browser image supplied to model]

toolResult

Frame 1, +0ms

[Browser image supplied to model]

assistant