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Prevent title-screen OS cursor trampoline

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Stop the title-screen from forcing the Windows cursor back into a small centered box while the Commonwealth Online overlay owns input. Changes:

- Intercept SetCursorPos and ClipCursor in the Fallout4.exe import table (IAT) and make them no-ops while the overlay owns the pointer.
- Hook MainMenu BSInputEventUser vtable cursor/mouse-move slots to consume events when custom menu input is captured.
- ReleaseMenuCursorConstraints(): clear constraints, unset forceOSCursorPos, expand cursor bounds to the full window, and clear OS ClipCursor. Re-assert each frame during AdvanceMovie.
- Add InstallCursorApiHooks() and wire it into PrismaUI init; add logging.
- Update changelog.md to document the fix. Binary compiled script and minor source formatting updated.
This commit is contained in:
andrew
2026-07-07 17:11:52 +12:00
parent c957c117c0
commit 2961eb6512
4 changed files with 226 additions and 40 deletions
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changelog.md
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@@ -9,6 +9,9 @@ For testing notes, milestone summaries, known issues, and next steps, see [`docs
## [Unreleased]
### Fixed
- Mouse cursor no longer trampolines back to a centered box in the custom main menu (previously only worked with a gamepad connected). In mouse mode the title-screen engine repositions/clips the OS cursor to a small centered box every frame; with a gamepad active that path never runs, so the pointer was free. Fixed by intercepting `SetCursorPos` and `ClipCursor` in the Fallout4.exe import table (IAT) and making them no-ops while the Commonwealth Online overlay owns the pointer, so the game can no longer move or box in the Windows cursor. Only the game module's imports are patched, leaving PrismaUI's own cursor rendering untouched. Also hooks the `MainMenu` `OnCursorMoveEvent`/`OnMouseMoveEvent` vtable slots and keeps the `MenuCursor` release (`forceOSCursorPos = false`, cleared parallax constraints, widened bounds) as defense-in-depth.
### Added
- **Custom main menu overlay**: PrismaUI full-screen overlay of Commonwealth Online main menu (MULTIPLAYER, CREATIONS, SETTINGS, HELP, QUIT) auto-shows on Fallout 4 title screen, replacing the vanilla list menu.
- **Main menu input capture**: Keyboard (↑↓ / ENTER / ESC) and gamepad (dpad / A / B) navigation of custom main menu overlay; vanilla menu input is blocked so the underlying CONTINUE/NEW/LOAD/SETTINGS rows remain unreachable.