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Added effects support for virtual controllers

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This commit is contained in:
Sam Lantinga 2022-05-16 07:21:28 -07:00
parent b3a18706ee
commit f0bc5c9cbf
3 changed files with 73 additions and 1 deletions
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6
include/SDL_joystick.h
View file

@ -352,6 +352,7 @@ extern DECLSPEC int SDLCALL SDL_JoystickAttachVirtual(SDL_JoystickType type,
* The structure that defines an extended virtual joystick description
*
* The caller must zero the structure and then initialize the version with `SDL_VIRTUAL_JOYSTICK_DESC_VERSION` before passing it to SDL_JoystickAttachVirtualEx()
* All other elements of this structure are optional and can be left 0.
*
* \sa SDL_JoystickAttachVirtualEx
*/
@ -373,6 +374,11 @@ typedef struct SDL_VirtualJoystickDesc
void *userdata; /**< User data pointer passed to callbacks */
void (*Update)(void *userdata); /**< Called when the joystick state should be updated */
void (*SetPlayerIndex)(void *userdata, int player_index); /**< Called when the player index is set */
int (*Rumble)(void *userdata, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble); /**< Implements SDL_JoystickRumble() */
int (*RumbleTriggers)(void *userdata, Uint16 left_rumble, Uint16 right_rumble); /**< Implements SDL_JoystickRumbleTriggers() */
int (*SetLED)(void *userdata, Uint8 red, Uint8 green, Uint8 blue); /**< Implements SDL_JoystickSetLED() */
int (*SendEffect)(void *userdata, const void *data, int size); /**< Implements SDL_JoystickSendEffect() */
} SDL_VirtualJoystickDesc;

41
src/joystick/virtual/SDL_virtualjoystick.c
View file

@ -395,6 +395,11 @@ VIRTUAL_JoystickGetDevicePlayerIndex(int device_index)
static void
VIRTUAL_JoystickSetDevicePlayerIndex(int device_index, int player_index)
{
joystick_hwdata *hwdata = VIRTUAL_HWDataForIndex(device_index);
if (hwdata && hwdata->desc.SetPlayerIndex) {
hwdata->desc.SetPlayerIndex(hwdata->desc.userdata, player_index);
}
}
@ -446,12 +451,22 @@ VIRTUAL_JoystickOpen(SDL_Joystick *joystick, int device_index)
static int
VIRTUAL_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
{
joystick_hwdata *hwdata = joystick->hwdata;
if (hwdata && hwdata->desc.Rumble) {
return hwdata->desc.Rumble(hwdata->desc.userdata, low_frequency_rumble, high_frequency_rumble);
}
return SDL_Unsupported();
}
static int
VIRTUAL_JoystickRumbleTriggers(SDL_Joystick *joystick, Uint16 left_rumble, Uint16 right_rumble)
{
joystick_hwdata *hwdata = joystick->hwdata;
if (hwdata && hwdata->desc.RumbleTriggers) {
return hwdata->desc.RumbleTriggers(hwdata->desc.userdata, left_rumble, right_rumble);
}
return SDL_Unsupported();
}
@ -459,19 +474,43 @@ VIRTUAL_JoystickRumbleTriggers(SDL_Joystick *joystick, Uint16 left_rumble, Uint1
static Uint32
VIRTUAL_JoystickGetCapabilities(SDL_Joystick *joystick)
{
return 0;
joystick_hwdata *hwdata = joystick->hwdata;
Uint32 caps = 0;
if (hwdata) {
if (hwdata->desc.Rumble) {
caps |= SDL_JOYCAP_RUMBLE;
}
if (hwdata->desc.RumbleTriggers) {
caps |= SDL_JOYCAP_RUMBLE_TRIGGERS;
}
if (hwdata->desc.SetLED) {
caps |= SDL_JOYCAP_LED;
}
}
return caps;
}
static int
VIRTUAL_JoystickSetLED(SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue)
{
joystick_hwdata *hwdata = joystick->hwdata;
if (hwdata && hwdata->desc.SetLED) {
return hwdata->desc.SetLED(hwdata->desc.userdata, red, green, blue);
}
return SDL_Unsupported();
}
static int
VIRTUAL_JoystickSendEffect(SDL_Joystick *joystick, const void *data, int size)
{
joystick_hwdata *hwdata = joystick->hwdata;
if (hwdata && hwdata->desc.SendEffect) {
return hwdata->desc.SendEffect(hwdata->desc.userdata, data, size);
}
return SDL_Unsupported();
}

27
test/testgamecontroller.c
View file

@ -312,6 +312,29 @@ static SDL_bool ShowingFront()
return showing_front;
}
static void VirtualControllerSetPlayerIndex(void *userdata, int player_index)
{
SDL_Log("Virtual Controller: player index set to %d\n", player_index);
}
static int VirtualControllerRumble(void *userdata, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
{
SDL_Log("Virtual Controller: rumble set to %d/%d\n", low_frequency_rumble, high_frequency_rumble);
return 0;
}
static int VirtualControllerRumbleTriggers(void *userdata, Uint16 left_rumble, Uint16 right_rumble)
{
SDL_Log("Virtual Controller: trigger rumble set to %d/%d\n", left_rumble, right_rumble);
return 0;
}
static int VirtualControllerSetLED(void *userdata, Uint8 red, Uint8 green, Uint8 blue)
{
SDL_Log("Virtual Controller: LED set to RGB %d,%d,%d\n", red, green, blue);
return 0;
}
static int OpenVirtualController()
{
SDL_VirtualJoystickDesc desc;
@ -321,6 +344,10 @@ static int OpenVirtualController()
desc.type = SDL_JOYSTICK_TYPE_GAMECONTROLLER;
desc.naxes = SDL_CONTROLLER_AXIS_MAX;
desc.nbuttons = SDL_CONTROLLER_BUTTON_MAX;
desc.SetPlayerIndex = VirtualControllerSetPlayerIndex;
desc.Rumble = VirtualControllerRumble;
desc.RumbleTriggers = VirtualControllerRumbleTriggers;
desc.SetLED = VirtualControllerSetLED;
return SDL_JoystickAttachVirtualEx(&desc);
}