Play: drag the mouse to tilt the maze · R restarts. Editor tool bar: Arrow (select/move), Circle, Arc, Square, Line; then Undo | Redo, Delete | Clear, Snap. Keys: Z undo, Y redo, X delete selected, G snap. Arrow tool: click a shape (it turns blue) and drag to move it. Drag Start/End markers too. Arc tool: press at the center and drag out (size + start angle), let go, move around to sweep, click to finish. Snap on → 15° steps. Start/End rules: a marker dropped on a wall, the glass or the other marker jumps back and says why; shapes that would touch a marker are refused. (The old arrow-key spin and space-bar jump were testing-only and have been removed.)
@witrotype-3 for idea Gemini for fixing my math Claude for fixing Gemini's math Claude for making it user friendly
