Tetris · ring-2.6-1t
Build a playable Tetris on a canvas with all seven tetrominoes, rotation, line clears, increasing speed, a next-piece preview, and score.
transcript · 8 messages
Build a playable Tetris on a canvas with all seven tetrominoes, rotation, line clears, increasing speed, a next-piece preview, and score.
thinking
The user wants a complete, self-contained Tetris game in a single HTML file. Let me build this with all the requested features: 1. Canvas-based rendering 2. All seven tetrominoes (I, O, T, S, Z, J, L) 3. Rotation (wall kicks) 4. Line clears 5. Increasing speed 6. Next-piece preview 7. Score display Let me write this as a single HTML file with inline CSS and JS.
/tmp/ws/index.html (9330 bytes)Successfully wrote 9330 bytes to /tmp/ws/index.html
thinking
Wait, I need to check my code more carefully. There are several bugs I can see: 1. The `collide` function has a bug - the logic is wrong. It should check bounds and collisions properly. 2. The `updateGhost` function has a bug - it uses a weird condition `collide(...)===false` in a while loop. 3. The `rotate` function has bugs in kick logic - `collide(current,nx,ny,newRot)` shouldn't pass `pieceX` and `pieceY`. 4. The hold function uses `holdType` which is never set. 5. The `drawBlock` uses `s-1` for block size but blocks might be 30px with 1px gap. 6. `pType` is referenced before `spawn()` is called the first time. Let me rewrite this more carefully to make sure everything works correctly.
Let me review and fix several bugs I see in that initial version. Let me rewrite it properly.
/tmp/ws/index.html (9881 bytes)Successfully wrote 9881 bytes to /tmp/ws/index.html
thinking
Let me verify the file was written correctly and test it by checking its contents. I should also verify there are no obvious bugs by reading it back. Let me re-read the file to check for correctness, especially the shape rotation logic and the DIMS data structure. Looking at the DIMS array: ``` const DIMS=[ [[1,4]], // I-piece: 1 row, 4 cols, cells: [1,1,1,1] — wait, that's only 4 cells [[2,2]], // O-piece: 2x2, cells: missing! ``` The issue is my DIMS format. Each piece needs [width, height, cells...]. Let me check: For I-piece: `[[1,4]]` — this gives h=1, w=4, but `cells=d.slice(1)[0]` would be undefined because there's no second element. Actually, looking more carefully: `DIMS[t]` is an array. `d=DIMS[t].slice()` creates a copy. `h=d[0][0], w=d[0][1]` gets first sub-array's values. Then `cells=d.slice(1)[0]` gets the second sub-array. I-piece: `[[1,4]]` — only has one sub-array, so `d.slice(1)[0]` would be undefined. This will crash. O-piece: `[[2,2]]` — same problem. I need to fix the data structure. Let me rewrite with a proper format. Actually, let me rewrite the whole thing more carefully to make sure the tetromino data is correct.
Looking at the DIMS data more carefully, I see the tetromino definitions are incomplete — the cell data is missing. Let me fix this properly.
/tmp/ws/index.html (10348 bytes)Successfully wrote 10348 bytes to /tmp/ws/index.html
thinking
The file has been written. Let me verify it exists and looks correct, and check if there are any obvious issues by reading it back. I should also verify the tetromino definitions are correct. Let me trace through the piece definitions: - I: [[1,1,1,1]] - 1 row, 4 cols ✓ - O: [[1,1],[1,1]] - 2x2 ✓ - T: [[0,1,0],[1,1,1]] - 2 rows, 3 cols ✓ - S: [[0,1,1],[1,1,0]] - 2 rows, 3 cols ✓ - Z: [[1,1,0],[0,1,1]] - 2 rows, 3 cols ✓ - J: [[1,0,0],[1,1,1]] - 2 rows, 3 cols ✓ - L: [[0,0,1],[1,1,1]] - 2 rows, 3 cols ✓ All seven tetrominoes are present. The rotation logic uses the rotShape function which rotates the 2D array. The kick system follows SRS (Super Rotation System). All features are present: 1. ✅ All seven tetrominoes 2. ✅ Rotation with wall kicks 3. ✅ Line clears 4. ✅ Increasing speed (every 10 lines) 5. ✅ Next-piece preview 6. ✅ Score display 7. ✅ Hold piece (bonus feature) 8. ✅ Ghost piece (shows where piece will land) 9. ✅ Hard drop, soft drop 10. ✅ Pause The file is self-contained with no external resources. It should be fully functional.
The Tetris game is complete at `/tmp/ws/index.html`. Here's a summary of everything included: **Core gameplay:** - **All 7 tetrominoes**: I, O, T, S, Z, J, L - **Rotation** with Super Rotation System (SRS) wall kicks for all pieces - **Line clears** — full rows are removed and score is awarded - **Increasing speed** — level up every 10 lines, drop interval decreases from 1000ms down to 50ms - **7-bag randomizer** — fair piece distribution **UI features:** - **Next-piece preview** panel - **Hold piece** panel (press C) - **Score, lines cleared, and level** display - **Ghost piece** — translucent preview of landing position - **Hard drop** (Space), **soft drop** (↓), **pause** (P) - **Game over screen** with final stats **Controls:** `←` `→` move · `↓` soft drop · `↑`/`X` rotate CW · `Z` rotate CCW · `Space` hard drop · `C` hold · `P` pause Self-contained single file — no external dependencies, no network requests.
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
Functional Tetris with score, next preview, piece movement/rotation via keys, and stacking blocks visible.
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.