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| 1 | pmbaty | 1 | /* |
| 2 | Simple DirectMedia Layer |
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| 3 | Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org> |
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| 4 | |||
| 5 | This software is provided 'as-is', without any express or implied |
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| 6 | warranty. In no event will the authors be held liable for any damages |
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| 7 | arising from the use of this software. |
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| 8 | |||
| 9 | Permission is granted to anyone to use this software for any purpose, |
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| 10 | including commercial applications, and to alter it and redistribute it |
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| 11 | freely, subject to the following restrictions: |
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| 12 | |||
| 13 | 1. The origin of this software must not be misrepresented; you must not |
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| 14 | claim that you wrote the original software. If you use this software |
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| 15 | in a product, an acknowledgment in the product documentation would be |
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| 16 | appreciated but is not required. |
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| 17 | 2. Altered source versions must be plainly marked as such, and must not be |
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| 18 | misrepresented as being the original software. |
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| 19 | 3. This notice may not be removed or altered from any source distribution. |
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| 20 | */ |
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| 21 | |||
| 22 | /** |
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| 23 | * \file SDL_gamecontroller.h |
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| 24 | * |
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| 25 | * Include file for SDL game controller event handling |
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| 26 | */ |
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| 27 | |||
| 28 | #ifndef SDL_gamecontroller_h_ |
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| 29 | #define SDL_gamecontroller_h_ |
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| 30 | |||
| 31 | #include "SDL_stdinc.h" |
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| 32 | #include "SDL_error.h" |
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| 33 | #include "SDL_rwops.h" |
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| 34 | #include "SDL_joystick.h" |
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| 35 | |||
| 36 | #include "begin_code.h" |
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| 37 | /* Set up for C function definitions, even when using C++ */ |
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| 38 | #ifdef __cplusplus |
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| 39 | extern "C" { |
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| 40 | #endif |
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| 41 | |||
| 42 | /** |
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| 43 | * \file SDL_gamecontroller.h |
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| 44 | * |
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| 45 | * In order to use these functions, SDL_Init() must have been called |
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| 46 | * with the ::SDL_INIT_GAMECONTROLLER flag. This causes SDL to scan the system |
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| 47 | * for game controllers, and load appropriate drivers. |
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| 48 | * |
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| 49 | * If you would like to receive controller updates while the application |
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| 50 | * is in the background, you should set the following hint before calling |
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| 51 | * SDL_Init(): SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS |
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| 52 | */ |
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| 53 | |||
| 54 | /** |
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| 55 | * The gamecontroller structure used to identify an SDL game controller |
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| 56 | */ |
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| 57 | struct _SDL_GameController; |
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| 58 | typedef struct _SDL_GameController SDL_GameController; |
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| 59 | |||
| 60 | |||
| 61 | typedef enum |
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| 62 | { |
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| 63 | SDL_CONTROLLER_BINDTYPE_NONE = 0, |
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| 64 | SDL_CONTROLLER_BINDTYPE_BUTTON, |
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| 65 | SDL_CONTROLLER_BINDTYPE_AXIS, |
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| 66 | SDL_CONTROLLER_BINDTYPE_HAT |
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| 67 | } SDL_GameControllerBindType; |
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| 68 | |||
| 69 | /** |
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| 70 | * Get the SDL joystick layer binding for this controller button/axis mapping |
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| 71 | */ |
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| 72 | typedef struct SDL_GameControllerButtonBind |
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| 73 | { |
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| 74 | SDL_GameControllerBindType bindType; |
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| 75 | union |
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| 76 | { |
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| 77 | int button; |
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| 78 | int axis; |
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| 79 | struct { |
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| 80 | int hat; |
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| 81 | int hat_mask; |
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| 82 | } hat; |
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| 83 | } value; |
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| 84 | |||
| 85 | } SDL_GameControllerButtonBind; |
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| 86 | |||
| 87 | |||
| 88 | /** |
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| 89 | * To count the number of game controllers in the system for the following: |
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| 90 | * int nJoysticks = SDL_NumJoysticks(); |
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| 91 | * int nGameControllers = 0; |
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| 92 | * for (int i = 0; i < nJoysticks; i++) { |
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| 93 | * if (SDL_IsGameController(i)) { |
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| 94 | * nGameControllers++; |
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| 95 | * } |
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| 96 | * } |
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| 97 | * |
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| 98 | * Using the SDL_HINT_GAMECONTROLLERCONFIG hint or the SDL_GameControllerAddMapping() you can add support for controllers SDL is unaware of or cause an existing controller to have a different binding. The format is: |
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| 99 | * guid,name,mappings |
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| 100 | * |
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| 101 | * Where GUID is the string value from SDL_JoystickGetGUIDString(), name is the human readable string for the device and mappings are controller mappings to joystick ones. |
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| 102 | * Under Windows there is a reserved GUID of "xinput" that covers any XInput devices. |
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| 103 | * The mapping format for joystick is: |
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| 104 | * bX - a joystick button, index X |
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| 105 | * hX.Y - hat X with value Y |
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| 106 | * aX - axis X of the joystick |
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| 107 | * Buttons can be used as a controller axis and vice versa. |
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| 108 | * |
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| 109 | * This string shows an example of a valid mapping for a controller |
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| 110 | * "03000000341a00003608000000000000,PS3 Controller,a:b1,b:b2,y:b3,x:b0,start:b9,guide:b12,back:b8,dpup:h0.1,dpleft:h0.8,dpdown:h0.4,dpright:h0.2,leftshoulder:b4,rightshoulder:b5,leftstick:b10,rightstick:b11,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:b6,righttrigger:b7", |
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| 111 | * |
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| 112 | */ |
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| 113 | |||
| 114 | /** |
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| 115 | * Load a set of mappings from a seekable SDL data stream (memory or file), filtered by the current SDL_GetPlatform() |
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| 116 | * A community sourced database of controllers is available at https://raw.github.com/gabomdq/SDL_GameControllerDB/master/gamecontrollerdb.txt |
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| 117 | * |
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| 118 | * If \c freerw is non-zero, the stream will be closed after being read. |
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| 119 | * |
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| 120 | * \return number of mappings added, -1 on error |
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| 121 | */ |
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| 122 | extern DECLSPEC int SDLCALL SDL_GameControllerAddMappingsFromRW(SDL_RWops * rw, int freerw); |
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| 123 | |||
| 124 | /** |
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| 125 | * Load a set of mappings from a file, filtered by the current SDL_GetPlatform() |
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| 126 | * |
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| 127 | * Convenience macro. |
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| 128 | */ |
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| 129 | #define SDL_GameControllerAddMappingsFromFile(file) SDL_GameControllerAddMappingsFromRW(SDL_RWFromFile(file, "rb"), 1) |
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| 130 | |||
| 131 | /** |
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| 132 | * Add or update an existing mapping configuration |
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| 133 | * |
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| 134 | * \return 1 if mapping is added, 0 if updated, -1 on error |
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| 135 | */ |
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| 136 | extern DECLSPEC int SDLCALL SDL_GameControllerAddMapping(const char* mappingString); |
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| 137 | |||
| 138 | /** |
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| 139 | * Get the number of mappings installed |
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| 140 | * |
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| 141 | * \return the number of mappings |
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| 142 | */ |
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| 143 | extern DECLSPEC int SDLCALL SDL_GameControllerNumMappings(void); |
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| 144 | |||
| 145 | /** |
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| 146 | * Get the mapping at a particular index. |
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| 147 | * |
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| 148 | * \return the mapping string. Must be freed with SDL_free(). Returns NULL if the index is out of range. |
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| 149 | */ |
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| 150 | extern DECLSPEC char * SDLCALL SDL_GameControllerMappingForIndex(int mapping_index); |
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| 151 | |||
| 152 | /** |
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| 153 | * Get a mapping string for a GUID |
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| 154 | * |
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| 155 | * \return the mapping string. Must be freed with SDL_free(). Returns NULL if no mapping is available |
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| 156 | */ |
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| 157 | extern DECLSPEC char * SDLCALL SDL_GameControllerMappingForGUID(SDL_JoystickGUID guid); |
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| 158 | |||
| 159 | /** |
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| 160 | * Get a mapping string for an open GameController |
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| 161 | * |
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| 162 | * \return the mapping string. Must be freed with SDL_free(). Returns NULL if no mapping is available |
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| 163 | */ |
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| 164 | extern DECLSPEC char * SDLCALL SDL_GameControllerMapping(SDL_GameController * gamecontroller); |
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| 165 | |||
| 166 | /** |
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| 167 | * Is the joystick on this index supported by the game controller interface? |
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| 168 | */ |
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| 169 | extern DECLSPEC SDL_bool SDLCALL SDL_IsGameController(int joystick_index); |
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| 170 | |||
| 171 | /** |
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| 172 | * Get the implementation dependent name of a game controller. |
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| 173 | * This can be called before any controllers are opened. |
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| 174 | * If no name can be found, this function returns NULL. |
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| 175 | */ |
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| 176 | extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index); |
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| 177 | |||
| 178 | /** |
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| 179 | * Open a game controller for use. |
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| 180 | * The index passed as an argument refers to the N'th game controller on the system. |
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| 181 | * This index is not the value which will identify this controller in future |
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| 182 | * controller events. The joystick's instance id (::SDL_JoystickID) will be |
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| 183 | * used there instead. |
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| 184 | * |
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| 185 | * \return A controller identifier, or NULL if an error occurred. |
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| 186 | */ |
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| 187 | extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerOpen(int joystick_index); |
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| 188 | |||
| 189 | /** |
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| 190 | * Return the SDL_GameController associated with an instance id. |
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| 191 | */ |
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| 192 | extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromInstanceID(SDL_JoystickID joyid); |
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| 193 | |||
| 194 | /** |
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| 195 | * Return the name for this currently opened controller |
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| 196 | */ |
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| 197 | extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller); |
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| 198 | |||
| 199 | /** |
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| 200 | * Get the USB vendor ID of an opened controller, if available. |
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| 201 | * If the vendor ID isn't available this function returns 0. |
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| 202 | */ |
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| 203 | extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetVendor(SDL_GameController * gamecontroller); |
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| 204 | |||
| 205 | /** |
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| 206 | * Get the USB product ID of an opened controller, if available. |
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| 207 | * If the product ID isn't available this function returns 0. |
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| 208 | */ |
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| 209 | extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetProduct(SDL_GameController * gamecontroller); |
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| 210 | |||
| 211 | /** |
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| 212 | * Get the product version of an opened controller, if available. |
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| 213 | * If the product version isn't available this function returns 0. |
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| 214 | */ |
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| 215 | extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetProductVersion(SDL_GameController * gamecontroller); |
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| 216 | |||
| 217 | /** |
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| 218 | * Returns SDL_TRUE if the controller has been opened and currently connected, |
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| 219 | * or SDL_FALSE if it has not. |
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| 220 | */ |
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| 221 | extern DECLSPEC SDL_bool SDLCALL SDL_GameControllerGetAttached(SDL_GameController *gamecontroller); |
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| 222 | |||
| 223 | /** |
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| 224 | * Get the underlying joystick object used by a controller |
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| 225 | */ |
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| 226 | extern DECLSPEC SDL_Joystick *SDLCALL SDL_GameControllerGetJoystick(SDL_GameController *gamecontroller); |
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| 227 | |||
| 228 | /** |
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| 229 | * Enable/disable controller event polling. |
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| 230 | * |
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| 231 | * If controller events are disabled, you must call SDL_GameControllerUpdate() |
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| 232 | * yourself and check the state of the controller when you want controller |
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| 233 | * information. |
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| 234 | * |
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| 235 | * The state can be one of ::SDL_QUERY, ::SDL_ENABLE or ::SDL_IGNORE. |
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| 236 | */ |
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| 237 | extern DECLSPEC int SDLCALL SDL_GameControllerEventState(int state); |
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| 238 | |||
| 239 | /** |
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| 240 | * Update the current state of the open game controllers. |
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| 241 | * |
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| 242 | * This is called automatically by the event loop if any game controller |
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| 243 | * events are enabled. |
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| 244 | */ |
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| 245 | extern DECLSPEC void SDLCALL SDL_GameControllerUpdate(void); |
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| 246 | |||
| 247 | |||
| 248 | /** |
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| 249 | * The list of axes available from a controller |
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| 250 | * |
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| 251 | * Thumbstick axis values range from SDL_JOYSTICK_AXIS_MIN to SDL_JOYSTICK_AXIS_MAX, |
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| 252 | * and are centered within ~8000 of zero, though advanced UI will allow users to set |
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| 253 | * or autodetect the dead zone, which varies between controllers. |
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| 254 | * |
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| 255 | * Trigger axis values range from 0 to SDL_JOYSTICK_AXIS_MAX. |
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| 256 | */ |
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| 257 | typedef enum |
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| 258 | { |
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| 259 | SDL_CONTROLLER_AXIS_INVALID = -1, |
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| 260 | SDL_CONTROLLER_AXIS_LEFTX, |
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| 261 | SDL_CONTROLLER_AXIS_LEFTY, |
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| 262 | SDL_CONTROLLER_AXIS_RIGHTX, |
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| 263 | SDL_CONTROLLER_AXIS_RIGHTY, |
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| 264 | SDL_CONTROLLER_AXIS_TRIGGERLEFT, |
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| 265 | SDL_CONTROLLER_AXIS_TRIGGERRIGHT, |
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| 266 | SDL_CONTROLLER_AXIS_MAX |
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| 267 | } SDL_GameControllerAxis; |
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| 268 | |||
| 269 | /** |
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| 270 | * turn this string into a axis mapping |
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| 271 | */ |
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| 272 | extern DECLSPEC SDL_GameControllerAxis SDLCALL SDL_GameControllerGetAxisFromString(const char *pchString); |
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| 273 | |||
| 274 | /** |
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| 275 | * turn this axis enum into a string mapping |
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| 276 | */ |
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| 277 | extern DECLSPEC const char* SDLCALL SDL_GameControllerGetStringForAxis(SDL_GameControllerAxis axis); |
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| 278 | |||
| 279 | /** |
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| 280 | * Get the SDL joystick layer binding for this controller button mapping |
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| 281 | */ |
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| 282 | extern DECLSPEC SDL_GameControllerButtonBind SDLCALL |
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| 283 | SDL_GameControllerGetBindForAxis(SDL_GameController *gamecontroller, |
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| 284 | SDL_GameControllerAxis axis); |
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| 285 | |||
| 286 | /** |
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| 287 | * Get the current state of an axis control on a game controller. |
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| 288 | * |
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| 289 | * The state is a value ranging from -32768 to 32767 (except for the triggers, |
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| 290 | * which range from 0 to 32767). |
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| 291 | * |
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| 292 | * The axis indices start at index 0. |
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| 293 | */ |
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| 294 | extern DECLSPEC Sint16 SDLCALL |
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| 295 | SDL_GameControllerGetAxis(SDL_GameController *gamecontroller, |
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| 296 | SDL_GameControllerAxis axis); |
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| 297 | |||
| 298 | /** |
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| 299 | * The list of buttons available from a controller |
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| 300 | */ |
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| 301 | typedef enum |
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| 302 | { |
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| 303 | SDL_CONTROLLER_BUTTON_INVALID = -1, |
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| 304 | SDL_CONTROLLER_BUTTON_A, |
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| 305 | SDL_CONTROLLER_BUTTON_B, |
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| 306 | SDL_CONTROLLER_BUTTON_X, |
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| 307 | SDL_CONTROLLER_BUTTON_Y, |
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| 308 | SDL_CONTROLLER_BUTTON_BACK, |
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| 309 | SDL_CONTROLLER_BUTTON_GUIDE, |
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| 310 | SDL_CONTROLLER_BUTTON_START, |
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| 311 | SDL_CONTROLLER_BUTTON_LEFTSTICK, |
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| 312 | SDL_CONTROLLER_BUTTON_RIGHTSTICK, |
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| 313 | SDL_CONTROLLER_BUTTON_LEFTSHOULDER, |
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| 314 | SDL_CONTROLLER_BUTTON_RIGHTSHOULDER, |
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| 315 | SDL_CONTROLLER_BUTTON_DPAD_UP, |
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| 316 | SDL_CONTROLLER_BUTTON_DPAD_DOWN, |
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| 317 | SDL_CONTROLLER_BUTTON_DPAD_LEFT, |
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| 318 | SDL_CONTROLLER_BUTTON_DPAD_RIGHT, |
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| 319 | SDL_CONTROLLER_BUTTON_MAX |
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| 320 | } SDL_GameControllerButton; |
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| 321 | |||
| 322 | /** |
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| 323 | * turn this string into a button mapping |
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| 324 | */ |
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| 325 | extern DECLSPEC SDL_GameControllerButton SDLCALL SDL_GameControllerGetButtonFromString(const char *pchString); |
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| 326 | |||
| 327 | /** |
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| 328 | * turn this button enum into a string mapping |
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| 329 | */ |
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| 330 | extern DECLSPEC const char* SDLCALL SDL_GameControllerGetStringForButton(SDL_GameControllerButton button); |
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| 331 | |||
| 332 | /** |
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| 333 | * Get the SDL joystick layer binding for this controller button mapping |
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| 334 | */ |
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| 335 | extern DECLSPEC SDL_GameControllerButtonBind SDLCALL |
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| 336 | SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller, |
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| 337 | SDL_GameControllerButton button); |
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| 338 | |||
| 339 | |||
| 340 | /** |
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| 341 | * Get the current state of a button on a game controller. |
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| 342 | * |
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| 343 | * The button indices start at index 0. |
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| 344 | */ |
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| 345 | extern DECLSPEC Uint8 SDLCALL SDL_GameControllerGetButton(SDL_GameController *gamecontroller, |
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| 346 | SDL_GameControllerButton button); |
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| 347 | |||
| 348 | /** |
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| 349 | * Close a controller previously opened with SDL_GameControllerOpen(). |
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| 350 | */ |
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| 351 | extern DECLSPEC void SDLCALL SDL_GameControllerClose(SDL_GameController *gamecontroller); |
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| 352 | |||
| 353 | |||
| 354 | /* Ends C function definitions when using C++ */ |
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| 355 | #ifdef __cplusplus |
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| 356 | } |
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| 357 | #endif |
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| 358 | #include "close_code.h" |
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| 359 | |||
| 360 | #endif /* SDL_gamecontroller_h_ */ |
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| 361 | |||
| 362 | /* vi: set ts=4 sw=4 expandtab: */ |