• src/doors/syncconquer/door/door_input.c

    From Rob Swindell (on Debian Linux)@VERT to Git commit to main/sbbs/master on Fri Jul 10 23:41:57 2026
    https://gitlab.synchro.net/main/sbbs/-/commit/530d43ff4b90871bb306feac
    Modified Files:
    src/doors/syncconquer/door/door_input.c
    Log Message:
    syncalert: make the map edge-scroll reachable on cell-granular terminals

    Red Alert scrolls the tactical map when the cursor reaches a viewport
    edge. On a cell-granular terminal (SyncTERM) the mouse mapper placed the
    cursor at each cell's centre, so the last row/column centre landed ch/2
    or cw/2 px short of the far canvas edge -- inside RA's edge-scroll zone's
    blind spot -- and the map wouldn't scroll down or right. It only worked
    in the sixel tier by accident: its reserved bottom row let the coordinate
    clamp snap to the true edge.

    Snap the far edge cells (last row/column) to the image-rect edge in cell
    mode so scroll-down/right is reachable in every tier. Pixel-reporting
    clients (SGR-Pixels 1016) already reach the edges natively and are left
    alone. The near edges (first row/column) deliberately keep the cell
    centre -- snapping the top row to y=0 would drag menu-tab clicks into the scroll-up zone and make the tabs unclickable.

    Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

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