Click this picture to see a recorded demo as well:

This project relies on the legendary doomgeneric repository, and implements a new VSCode code window as the screen buffer.
It performs the following:

1. Uses color schemes to output color.
2. Overrides VS Code's built-in type command. When the active editor has a doom:// URI scheme, keystrokes are intercepted and their char codes sent to DOOM instead of being passed through to the editor via default:type.
3. Registers named VS Code commands (doom.key.up, doom.key.ctrl, etc.) that map to DOOM key codes. These are bound to actual keyboard shortcuts in package.json keybindings with a when clause (likely editorTextFocus && resourceScheme == 'doom').
4. Performs press-and-release simulations: VSCode only gives you keydown events, not keyup. So pressAndRelease works around this with a debounced release timer (150ms). On each keystroke, it immediately sends a key-press event to the DOOM process, and schedules a key-release 150ms later. If the same key fires again before the timer expires, the release is postponed — this keeps the key "held down" for continuous movement while the user holds the key.

Another cool thing about this project - it was 100% vibe-coded using Claude Code.

1. Open VSCode in this directory.
2. Press F5. A new Window should appear.
3. Run DOOM: Start Game to start (see video).

Give it a go!

Jonathan Bar Or