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Automatically assign player indexes to game controllers, and allow changing the player index for game controllers and joysticks.

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Added the functions SDL_JoystickFromPlayerIndex(), SDL_JoystickSetPlayerIndex(), SDL_GameControllerFromPlayerIndex(), and SDL_GameControllerSetPlayerIndex()
This commit is contained in:
Sam Lantinga
2019-12-20 20:12:03 -08:00
parent f050309ee9
commit 46e1377d49
26 changed files with 405 additions and 67 deletions
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44
src/joystick/iphoneos/SDL_sysjoystick.m
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@@ -469,6 +469,15 @@ IOS_JoystickGetDevicePlayerIndex(int device_index)
return device ? (int)device->controller.playerIndex : -1;
}
static void
IOS_JoystickSetDevicePlayerIndex(int device_index, int player_index)
{
SDL_JoystickDeviceItem *device = GetDeviceForIndex(device_index);
if (device) {
device->controller.playerIndex = player_index;
}
}
static SDL_JoystickGUID
IOS_JoystickGetDeviceGUID( int device_index )
{
@@ -616,7 +625,6 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
GCController *controller = joystick->hwdata->controller;
Uint8 hatstate = SDL_HAT_CENTERED;
int i;
int updateplayerindex = 0;
int pause_button_index = 0;
if (controller.extendedGamepad) {
@@ -670,17 +678,10 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
hatstate = IOS_MFIJoystickHatStateForDPad(gamepad.dpad);
for (i = 0; i < SDL_arraysize(axes); i++) {
/* The triggers (axes 2 and 5) are resting at -32768 but SDL
* initializes its values to 0. We only want to make sure the
* player index is up to date if the user actually moves an axis. */
if ((i != 2 && i != 5) || axes[i] != -32768) {
updateplayerindex |= (joystick->axes[i].value != axes[i]);
}
SDL_PrivateJoystickAxis(joystick, i, axes[i]);
}
for (i = 0; i < button_count; i++) {
updateplayerindex |= (joystick->buttons[i] != buttons[i]);
SDL_PrivateJoystickButton(joystick, i, buttons[i]);
}
} else if (controller.gamepad) {
@@ -701,7 +702,6 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
hatstate = IOS_MFIJoystickHatStateForDPad(gamepad.dpad);
for (i = 0; i < button_count; i++) {
updateplayerindex |= (joystick->buttons[i] != buttons[i]);
SDL_PrivateJoystickButton(joystick, i, buttons[i]);
}
}
@@ -715,7 +715,6 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
};
for (i = 0; i < SDL_arraysize(axes); i++) {
updateplayerindex |= (joystick->axes[i].value != axes[i]);
SDL_PrivateJoystickAxis(joystick, i, axes[i]);
}
@@ -737,14 +736,12 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
#pragma clang diagnostic pop
for (i = 0; i < button_count; i++) {
updateplayerindex |= (joystick->buttons[i] != buttons[i]);
SDL_PrivateJoystickButton(joystick, i, buttons[i]);
}
}
#endif /* TARGET_OS_TV */
if (joystick->nhats > 0) {
updateplayerindex |= (joystick->hats[0] != hatstate);
SDL_PrivateJoystickHat(joystick, 0, hatstate);
}
@@ -752,31 +749,9 @@ IOS_MFIJoystickUpdate(SDL_Joystick * joystick)
for (i = 0; i < joystick->hwdata->num_pause_presses; i++) {
SDL_PrivateJoystickButton(joystick, pause_button_index, SDL_PRESSED);
SDL_PrivateJoystickButton(joystick, pause_button_index, SDL_RELEASED);
updateplayerindex = YES;
}
joystick->hwdata->num_pause_presses = 0;
}
if (updateplayerindex && controller.playerIndex == -1) {
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 (i = 0; i < SDL_arraysize(usedPlayerIndexSlots); i++) {
if (!usedPlayerIndexSlots[i]) {
controller.playerIndex = i;
break;
}
}
}
}
#endif /* SDL_JOYSTICK_MFI */
}
@@ -874,6 +849,7 @@ SDL_JoystickDriver SDL_IOS_JoystickDriver =
IOS_JoystickDetect,
IOS_JoystickGetDeviceName,
IOS_JoystickGetDevicePlayerIndex,
IOS_JoystickSetDevicePlayerIndex,
IOS_JoystickGetDeviceGUID,
IOS_JoystickGetDeviceInstanceID,
IOS_JoystickOpen,