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emscripten: Improve gamepads support

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In the W3C gamepad API, many gamepads are mapped to the "standard
layout", where D-pad keys are mapped to buttons 12-15.
This commit is contained in:
kichikuou
2023-09-03 22:41:12 +09:00
parent c61afb4308
commit 10cdec98e6
1 changed files with 20 additions and 8 deletions
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src/sdl_event.c
+20 -8
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@@ -381,14 +381,26 @@ void sdl_handle_event(SDL_Event *e) {
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
if (e->jbutton.button < 4) {
int i = 1 << (e->jbutton.button+4);
if (e->jbutton.state == SDL_PRESSED)
joyinfo |= i;
else
joyinfo &= ~i;
} else {
if (e->jbutton.state == SDL_RELEASED) {
{
int mask = 0;
switch (e->jbutton.button) {
case 0: case 1: case 2: case 3:
mask = 1 << (e->jbutton.button + 4);
break;
#ifdef __EMSCRIPTEN__
// Gamepads known to browsers get a "standard" mapping where D-pad
// keys are mapped to buttons 12-15.
case 12: mask = SYS35KEY_UP; break;
case 13: mask = SYS35KEY_DOWN; break;
case 14: mask = SYS35KEY_LEFT; break;
case 15: mask = SYS35KEY_RIGHT; break;
#endif
}
if (mask) {
if (e->jbutton.state == SDL_PRESSED)
joyinfo |= mask;
else
joyinfo &= ~mask;
}
}
break;