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iOS: Set the 'player index' of MFi game controllers when they're opened for use. 

MFi controllers display their player index via LEDs on the controller.
This commit is contained in:
Alex Szpakowski 2015-11-09 18:13:47 -04:00
parent 84f6bc41b8
commit 0da59802aa
1 changed files with 19 additions and 0 deletions
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19
src/joystick/iphoneos/SDL_sysjoystick.m
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@ -361,6 +361,25 @@ SDL_SYS_JoystickOpen(SDL_Joystick * joystick, int device_index)
} else {
#ifdef SDL_JOYSTICK_MFI
GCController *controller = device->controller;
BOOL usedPlayerIndexSlots[4] = {NO, NO, NO, NO};
/* Find the player index of all other connected controllers. */
for (GCController *c in [GCController controllers]) {
if (c != controller && c.playerIndex >= 0) {
usedPlayerIndexSlots[c.playerIndex] = YES;
}
}
/* Set this controller's player index to the first unused index.
* FIXME: This logic isn't great... but SDL doesn't expose this
* concept in its external API, so we don't have much to go on. */
for (int i = 0; i < 4; i++) {
if (!usedPlayerIndexSlots[i]) {
controller.playerIndex = i;
break;
}
}
controller.controllerPausedHandler = ^(GCController *controller) {
if (joystick->hwdata) {
++joystick->hwdata->num_pause_presses;