Files
libakgl/tests/controller.c
Andrew Kesterson a3eada1b3f Carry modifiers and composed text in the keystroke ring
The ring held a keycode and dropped the rest of the event, so a line editor
built on akgl_controller_poll_key() could not reach a single shifted
character: no double quote, no colon, no parenthesis, and no lower case.
The modifier state was discarded two layers below the caller, and polling
SDL_GetModState() at read time cannot recover it -- the key is long
released by then, which is the point of a ring.

akgl_Keystroke carries the keycode, the modifiers and the UTF-8 text SDL
composed, and akgl_controller_poll_keystroke() hands back all three.
akgl_controller_poll_key() is unchanged for its callers: a game asking
whether the up arrow was pressed already gets what it wants.

The text comes from SDL_EVENT_TEXT_INPUT, which is the only correct way to
get a character out of SDL, and is attached to the press still waiting for
it -- tracked with a flag rather than by "whatever entry is newest", so a
press dropped by a full buffer cannot hand its text to an older key. Text
with no press behind it (an IME commit, a dead key) is buffered on its own
with keycode 0, and the keycode-only poller discards those on the way past.
Oversized text is cut on a code point boundary, and a sequence the string
ends in the middle of is dropped rather than read past its terminator.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-31 12:52:38 -04:00

38 KiB