workshopsoft/ludic
2
0
Fork 0
Code Issues Pull requests Projects Releases 26 Packages Wiki Activity Actions

feat(input): #89 cursor capture — Input.cursor_mode (hide/lock/confine)
All checks were successful
bootstrap / cfree-fixpoint (push) Successful in 22s
Details
ci / build-and-test (push) Successful in 2m24s
Details
commit-lint / conventional-commits (push) Successful in 5s
Details
docs / build-and-deploy (push) Successful in 29s
Details

Browse source 
A windowed action game can hide the OS cursor and lock/confine the mouse to the
window. Input.cursor_mode(mode): 0 normal, 1 hidden (draw your own reticle),
2 locked (hidden + dissociated — the mouse feeds relative motion via
Input.mouse_dx/dy and Input.mouse_x/y is a clamped virtual cursor, FPS/twin-stick
aim), 3 confined (dissociated but visible; the mouse can't leave the window).
The platform auto-releases (shows + reconnects) while the window is not key
(Cmd-Tab) and on close, so the cursor is never left captured. Headless it is a
no-op (DCE'd).

Native macOS impl in cocoa.ll: [NSCursor hide]/[unhide] (ref-counted, toggled
only on change so the count stays balanced across focus changes),
CGAssociateMouseAndMouseCursorPosition, and CGGetLastMouseDelta for the relative
virtual cursor, behind a new win_cursor_mode intrinsic. Windowed-only behaviour
(not in the headless golden suite); example compiles headless and links
windowed. Full suite 115/0, fixpoint holds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-02 08:06:34 +03:00
parent f3f1336882
commit 3eb5447f74
11 changed files with 26543 additions and 26240 deletions
Download patch file Download diff file Expand all files Collapse all files

3
changes/cursor-capture.md Normal file
View file

@ -0,0 +1,3 @@
bump: minor
type: feat
Cursor capture (#89) — `Input.cursor_mode(mode)` hides / locks / confines the OS mouse for a windowed game: `0` normal (visible, free), `1` hidden (hide the OS cursor while focused so a game draws its own reticle), `2` locked (hidden + dissociated — the mouse feeds *relative* motion through `Input.mouse_dx/dy`, and `Input.mouse_x/y` becomes a clamped virtual cursor, the FPS / twin-stick aim mode), `3` confined (dissociated but visible; the mouse cannot leave the window). The platform auto-releases (shows + reconnects the cursor) while the window is not key (Cmd-Tab) and on close, so the cursor is never left captured. Adds the native macOS implementation in `cocoa.ll` (`[NSCursor hide]/[unhide]`, ref-counted and toggled only on change; `CGAssociateMouseAndMouseCursorPosition`; `CGGetLastMouseDelta` for the relative virtual cursor) behind a new `win_cursor_mode` intrinsic; headless / non-windowed it is a no-op (DCE'd). Example: `examples/library/cursor_capture.ludic`.