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Author SHA1 Message Date
Sam Lantinga aba2792896 Added a Windows Gaming Input joystick driver 
This driver supports the Razer Atrox Arcade Stick

Some of the quirks of this driver, inherent in Windows Gaming Input:
* There will never appear to be controllers connected at startup. You must support hot-plugging in order to see these controllers.
* You can't read the state of the guide button
* You can't get controller events in the background
 2020-04-18 21:41:37 -07:00
Sam Lantinga 3d942ccc15 Removed debug code 2020-04-08 09:02:02 -07:00
Sam Lantinga 09f552639a Fixed memory leak and removed debug code from Windows sensor implementation 2020-04-08 09:00:10 -07:00
Sam Lantinga 2be75c6a61 Fixed bug 5028 - Virtual Joysticks (new joystick backend) 
David Ludwig

I have created a new driver for SDL's Joystick and Game-Controller subsystem: a Virtual driver.  This driver allows one to create a software-based joystick, which to SDL applications will look and react like a real joystick, but whose state can be set programmatically.  A primary use case for this is to help enable developers to add touch-screen joysticks to their apps.

The driver comes with a set of new, public APIs, with functions to attach and detach joysticks, set virtual-joystick state, and to determine if a joystick is a virtual-one.

Use of virtual joysticks goes as such:

1. Attach one or more virtual joysticks by calling SDL_JoystickAttachVirtual.  If successful, this returns the virtual-device's joystick-index.
2. Open the virtual joysticks (using indicies returned by SDL_JoystickAttachVirtual).
3. Call any of the SDL_JoystickSetVirtual* functions when joystick-state changes.  Please note that virtual-joystick state will only get applied on the next call to SDL_JoystickUpdate, or when pumping or polling for SDL events (via SDL_PumpEvents or SDL_PollEvent).


Here is a listing of the new, public APIs, at present and subject to change:

------------------------------------------------------------

/**
 * Attaches a new virtual joystick.
 * Returns the joystick's device index, or -1 if an error occurred.
 */
extern DECLSPEC int SDLCALL SDL_JoystickAttachVirtual(SDL_JoystickType type, int naxes, int nballs, int nbuttons, int nhats);

/**
 * Detaches a virtual joystick
 * Returns 0 on success, or -1 if an error occurred.
 */
extern DECLSPEC int SDLCALL SDL_JoystickDetachVirtual(int device_index);

/**
 * Indicates whether or not a virtual-joystick is at a given device index.
 */
extern DECLSPEC SDL_bool SDLCALL SDL_JoystickIsVirtual(int device_index);

/**
 * Set values on an opened, virtual-joystick's controls.
 * Returns 0 on success, -1 on error.
 */
extern DECLSPEC int SDLCALL SDL_JoystickSetVirtualAxis(SDL_Joystick * joystick, int axis, Sint16 value);
extern DECLSPEC int SDLCALL SDL_JoystickSetVirtualBall(SDL_Joystick * joystick, int ball, Sint16 xrel, Sint16 yrel);
extern DECLSPEC int SDLCALL SDL_JoystickSetVirtualButton(SDL_Joystick * joystick, int button, Uint8 value);
extern DECLSPEC int SDLCALL SDL_JoystickSetVirtualHat(SDL_Joystick * joystick, int hat, Uint8 value);

------------------------------------------------------------

Miscellaneous notes on the initial patch, which are also subject to change:

1. no test code is present in SDL, yet.  This should, perhaps, change.  Initial development was done with an ImGui-based app, which potentially is too thick for use in SDL-official.  If tests are to be added, what kind of tests?  Automated?  Graphical?

2. virtual game controllers can be created by calling SDL_JoystickAttachVirtual with a joystick-type of SDL_JOYSTICK_TYPE_GAME_CONTROLLER, with naxes (num axes) set to SDL_CONTROLLER_AXIS_MAX, and with nbuttons (num buttons) set to SDL_CONTROLLER_BUTTON_MAX.  When updating their state, values of type SDL_GameControllerAxis or SDL_GameControllerButton can be casted to an int and used for the control-index (in calls to SDL_JoystickSetVirtual* functions).

3. virtual joysticks' guids are mostly all-zeros with the exception of the last two bytes, the first of which is a 'v', to indicate that the guid is a virtual one, and the second of which is a SDL_JoystickType that has been converted into a Uint8.

4. virtual joysticks are ONLY turned into virtual game-controllers if and when their joystick-type is set to SDL_JOYSTICK_TYPE_GAMECONTROLLER.  This is controlled by having SDL's default list of game-controllers have a single entry for a virtual game controller (of guid, "00000000000000000000000000007601", which is subject to the guid-encoding described above).

5. regarding having to call SDL_JoystickUpdate, either directly or indirectly via SDL_PumpEvents or SDL_PollEvents, before new virtual-joystick state becomes active (as specified via SDL_JoystickSetVirtual* function-calls), this was done to match behavior found in SDL's other joystick drivers, almost all of which will only update SDL-state during SDL_JoystickUpdate.

6. the initial patch is based off of SDL 2.0.12

7. the virtual joystick subsystem is disabled by default.  It should be possible to enable it by building with SDL_JOYSTICK_VIRTUAL=1



Questions, comments, suggestions, or bug reports very welcome!
 2020-03-13 19:08:45 -07:00
Sam Lantinga dd0ebfdf8b Use the triggers to test rumble for more fine grained vibration feedback 2020-02-07 11:45:32 -08:00
Sam Lantinga a8780c6a28 Updated copyright date for 2020 2020-01-16 20:49:25 -08:00
Sam Lantinga 46e1377d49 Automatically assign player indexes to game controllers, and allow changing the player index for game controllers and joysticks. 
Added the functions SDL_JoystickFromPlayerIndex(), SDL_JoystickSetPlayerIndex(), SDL_GameControllerFromPlayerIndex(), and SDL_GameControllerSetPlayerIndex()
 2019-12-20 20:12:03 -08:00
Sam Lantinga b5aff9d7c3 Added SDL_GameControllerTypeForIndex() and SDL_GameControllerGetType() to return the type of controller attached. 2019-11-22 13:12:12 -08:00
Ozkan Sezer 32bb8b4b40 test: replace some exit()s with returns. 2019-09-10 10:03:20 +03:00
Sam Lantinga 5e13087b0f Updated copyright for 2019 2019-01-04 22:01:14 -08:00
Sam Lantinga d2042e1ed4 Added HIDAPI joystick drivers for more consistent support for Xbox, PS4 and Nintendo Switch Pro controller support across platforms. 
Added SDL_GameControllerRumble() and SDL_JoystickRumble() for simple force feedback outside of the SDL haptics API
 2018-08-09 16:00:17 -07:00
Sam Lantinga e3cc5b2c6b Updated copyright for 2018 2018-01-03 10:03:25 -08:00
Sam Lantinga 45b774e3f7 Updated copyright for 2017 2017-01-01 18:33:28 -08:00
Philipp Wiesemann c2b90f2df8 Fixed compiling of testgamecontroller program with C++. 2016-12-28 20:11:29 +01:00
Sam Lantinga 6d7da0887d Split controller axes into positive and negative sides so each can be bound independently. 
Using this a D-Pad can be mapped to a thumbstick and vice versa.
Also added support for inverted axes, improving trigger binding support
 2016-12-27 01:39:07 -08:00
Sam Lantinga 70aa2a5717 Only print out the controller mappings if we're not going to test a controller 2016-12-09 04:17:10 -08:00
Sam Lantinga dd5d85a4e7 Added an API to iterate over game controller mappings 2016-11-29 06:36:57 -08:00
Sam Lantinga c406f649b3 Added USB VID/PID information to the SDL test programs 2016-11-10 18:53:50 -08:00
Sam Lantinga c490b54e08 Fixed black screen on Steam Link 2016-10-13 04:01:25 -07:00
Philipp Wiesemann 929b965c62 Fixed compiling of three test programs with C++. 2016-09-21 23:06:38 +02:00
Philipp Wiesemann 6a9a8b682c Fixed memory leak in game controller test program. 2016-05-05 22:05:21 +02:00
Sam Lantinga 42065e785d Updated copyright to 2016 2016-01-02 10:10:34 -08:00
Philipp Wiesemann 11d98995da Replaced tabs with spaces in test programs. 2015-11-25 21:39:28 +01:00
Ryan C. Gordon e6ad29aec8 Added SDL_JoystickFromInstanceID() and SDL_GameControllerFromInstanceID(). 2015-11-14 12:35:45 -05:00
Alex Szpakowski 2bf6f1bcb7 Added initial support for MFi game controllers on iOS. 2015-09-20 23:08:36 -03:00
Philipp Wiesemann 0e45984fa0 Fixed crash if initialization of EGL failed but was tried again later. 
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly
uninitialized data structure if loading the library first failed. A later try to
use EGL then skipped initialization and assumed it was previously successful
because the data structure now already existed. This led to at least one crash
in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was
dereferenced to make a call to eglBindAPI().
 2015-06-21 17:33:46 +02:00