2 Simple DirectMedia Layer
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16 appreciated but is not required.
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25 * \brief The SDL Haptic subsystem allows you to control haptic (force feedback)
28 * The basic usage is as follows:
29 * - Initialize the Subsystem (::SDL_INIT_HAPTIC).
30 * - Open a Haptic Device.
31 * - SDL_HapticOpen() to open from index.
32 * - SDL_HapticOpenFromJoystick() to open from an existing joystick.
33 * - Create an effect (::SDL_HapticEffect).
34 * - Upload the effect with SDL_HapticNewEffect().
35 * - Run the effect with SDL_HapticRunEffect().
36 * - (optional) Free the effect with SDL_HapticDestroyEffect().
37 * - Close the haptic device with SDL_HapticClose().
39 * \par Simple rumble example:
44 * haptic = SDL_HapticOpen( 0 );
48 * // Initialize simple rumble
49 * if (SDL_HapticRumbleInit( haptic ) != 0)
52 * // Play effect at 50% strength for 2 seconds
53 * if (SDL_HapticRumblePlay( haptic, 0.5, 2000 ) != 0)
58 * SDL_HapticClose( haptic );
61 * \par Complete example:
63 * int test_haptic( SDL_Joystick * joystick ) {
65 * SDL_HapticEffect effect;
69 * haptic = SDL_HapticOpenFromJoystick( joystick );
70 * if (haptic == NULL) return -1; // Most likely joystick isn't haptic
72 * // See if it can do sine waves
73 * if ((SDL_HapticQuery(haptic) & SDL_HAPTIC_SINE)==0) {
74 * SDL_HapticClose(haptic); // No sine effect
78 * // Create the effect
79 * memset( &effect, 0, sizeof(SDL_HapticEffect) ); // 0 is safe default
80 * effect.type = SDL_HAPTIC_SINE;
81 * effect.periodic.direction.type = SDL_HAPTIC_POLAR; // Polar coordinates
82 * effect.periodic.direction.dir[0] = 18000; // Force comes from south
83 * effect.periodic.period = 1000; // 1000 ms
84 * effect.periodic.magnitude = 20000; // 20000/32767 strength
85 * effect.periodic.length = 5000; // 5 seconds long
86 * effect.periodic.attack_length = 1000; // Takes 1 second to get max strength
87 * effect.periodic.fade_length = 1000; // Takes 1 second to fade away
89 * // Upload the effect
90 * effect_id = SDL_HapticNewEffect( haptic, &effect );
93 * SDL_HapticRunEffect( haptic, effect_id, 1 );
94 * SDL_Delay( 5000); // Wait for the effect to finish
96 * // We destroy the effect, although closing the device also does this
97 * SDL_HapticDestroyEffect( haptic, effect_id );
100 * SDL_HapticClose(haptic);
102 * return 0; // Success
106 * You can also find out more information on my blog:
107 * http://bobbens.dyndns.org/journal/2010/sdl_haptic/
109 * \author Edgar Simo Serra
112 #ifndef _SDL_haptic_h
113 #define _SDL_haptic_h
115 #include "SDL_stdinc.h"
116 #include "SDL_error.h"
117 #include "SDL_joystick.h"
119 #include "begin_code.h"
120 /* Set up for C function definitions, even when using C++ */
123 #endif /* __cplusplus */
126 * \typedef SDL_Haptic
128 * \brief The haptic structure used to identify an SDL haptic.
131 * \sa SDL_HapticOpenFromJoystick
132 * \sa SDL_HapticClose
135 typedef struct _SDL_Haptic SDL_Haptic;
139 * \name Haptic features
141 * Different haptic features a device can have.
146 * \name Haptic effects
151 * \brief Constant effect supported.
153 * Constant haptic effect.
155 * \sa SDL_HapticCondition
157 #define SDL_HAPTIC_CONSTANT (1<<0)
160 * \brief Sine wave effect supported.
162 * Periodic haptic effect that simulates sine waves.
164 * \sa SDL_HapticPeriodic
166 #define SDL_HAPTIC_SINE (1<<1)
169 * \brief Left/Right effect supported.
171 * Haptic effect for direct control over high/low frequency motors.
173 * \sa SDL_HapticLeftRight
174 * \warning this value was SDL_HAPTIC_SQUARE right before 2.0.0 shipped. Sorry,
175 * we ran out of bits, and this is important for XInput devices.
177 #define SDL_HAPTIC_LEFTRIGHT (1<<2)
179 /* !!! FIXME: put this back when we have more bits in 2.1 */
180 /* #define SDL_HAPTIC_SQUARE (1<<2) */
183 * \brief Triangle wave effect supported.
185 * Periodic haptic effect that simulates triangular waves.
187 * \sa SDL_HapticPeriodic
189 #define SDL_HAPTIC_TRIANGLE (1<<3)
192 * \brief Sawtoothup wave effect supported.
194 * Periodic haptic effect that simulates saw tooth up waves.
196 * \sa SDL_HapticPeriodic
198 #define SDL_HAPTIC_SAWTOOTHUP (1<<4)
201 * \brief Sawtoothdown wave effect supported.
203 * Periodic haptic effect that simulates saw tooth down waves.
205 * \sa SDL_HapticPeriodic
207 #define SDL_HAPTIC_SAWTOOTHDOWN (1<<5)
210 * \brief Ramp effect supported.
212 * Ramp haptic effect.
216 #define SDL_HAPTIC_RAMP (1<<6)
219 * \brief Spring effect supported - uses axes position.
221 * Condition haptic effect that simulates a spring. Effect is based on the
224 * \sa SDL_HapticCondition
226 #define SDL_HAPTIC_SPRING (1<<7)
229 * \brief Damper effect supported - uses axes velocity.
231 * Condition haptic effect that simulates dampening. Effect is based on the
234 * \sa SDL_HapticCondition
236 #define SDL_HAPTIC_DAMPER (1<<8)
239 * \brief Inertia effect supported - uses axes acceleration.
241 * Condition haptic effect that simulates inertia. Effect is based on the axes
244 * \sa SDL_HapticCondition
246 #define SDL_HAPTIC_INERTIA (1<<9)
249 * \brief Friction effect supported - uses axes movement.
251 * Condition haptic effect that simulates friction. Effect is based on the
254 * \sa SDL_HapticCondition
256 #define SDL_HAPTIC_FRICTION (1<<10)
259 * \brief Custom effect is supported.
261 * User defined custom haptic effect.
263 #define SDL_HAPTIC_CUSTOM (1<<11)
265 /* @} *//* Haptic effects */
267 /* These last few are features the device has, not effects */
270 * \brief Device can set global gain.
272 * Device supports setting the global gain.
274 * \sa SDL_HapticSetGain
276 #define SDL_HAPTIC_GAIN (1<<12)
279 * \brief Device can set autocenter.
281 * Device supports setting autocenter.
283 * \sa SDL_HapticSetAutocenter
285 #define SDL_HAPTIC_AUTOCENTER (1<<13)
288 * \brief Device can be queried for effect status.
290 * Device can be queried for effect status.
292 * \sa SDL_HapticGetEffectStatus
294 #define SDL_HAPTIC_STATUS (1<<14)
297 * \brief Device can be paused.
299 * \sa SDL_HapticPause
300 * \sa SDL_HapticUnpause
302 #define SDL_HAPTIC_PAUSE (1<<15)
306 * \name Direction encodings
311 * \brief Uses polar coordinates for the direction.
313 * \sa SDL_HapticDirection
315 #define SDL_HAPTIC_POLAR 0
318 * \brief Uses cartesian coordinates for the direction.
320 * \sa SDL_HapticDirection
322 #define SDL_HAPTIC_CARTESIAN 1
325 * \brief Uses spherical coordinates for the direction.
327 * \sa SDL_HapticDirection
329 #define SDL_HAPTIC_SPHERICAL 2
331 /* @} *//* Direction encodings */
333 /* @} *//* Haptic features */
340 * \brief Used to play a device an infinite number of times.
342 * \sa SDL_HapticRunEffect
344 #define SDL_HAPTIC_INFINITY 4294967295U
348 * \brief Structure that represents a haptic direction.
350 * Directions can be specified by:
351 * - ::SDL_HAPTIC_POLAR : Specified by polar coordinates.
352 * - ::SDL_HAPTIC_CARTESIAN : Specified by cartesian coordinates.
353 * - ::SDL_HAPTIC_SPHERICAL : Specified by spherical coordinates.
355 * Cardinal directions of the haptic device are relative to the positioning
356 * of the device. North is considered to be away from the user.
358 * The following diagram represents the cardinal directions:
373 (1,0) West <----[ HAPTIC ]----> East (-1,0)
386 * If type is ::SDL_HAPTIC_POLAR, direction is encoded by hundredths of a
387 * degree starting north and turning clockwise. ::SDL_HAPTIC_POLAR only uses
388 * the first \c dir parameter. The cardinal directions would be:
389 * - North: 0 (0 degrees)
390 * - East: 9000 (90 degrees)
391 * - South: 18000 (180 degrees)
392 * - West: 27000 (270 degrees)
394 * If type is ::SDL_HAPTIC_CARTESIAN, direction is encoded by three positions
395 * (X axis, Y axis and Z axis (with 3 axes)). ::SDL_HAPTIC_CARTESIAN uses
396 * the first three \c dir parameters. The cardinal directions would be:
402 * The Z axis represents the height of the effect if supported, otherwise
403 * it's unused. In cartesian encoding (1, 2) would be the same as (2, 4), you
404 * can use any multiple you want, only the direction matters.
406 * If type is ::SDL_HAPTIC_SPHERICAL, direction is encoded by two rotations.
407 * The first two \c dir parameters are used. The \c dir parameters are as
408 * follows (all values are in hundredths of degrees):
409 * - Degrees from (1, 0) rotated towards (0, 1).
410 * - Degrees towards (0, 0, 1) (device needs at least 3 axes).
413 * Example of force coming from the south with all encodings (force coming
414 * from the south means the user will have to pull the stick to counteract):
416 * SDL_HapticDirection direction;
418 * // Cartesian directions
419 * direction.type = SDL_HAPTIC_CARTESIAN; // Using cartesian direction encoding.
420 * direction.dir[0] = 0; // X position
421 * direction.dir[1] = 1; // Y position
422 * // Assuming the device has 2 axes, we don't need to specify third parameter.
424 * // Polar directions
425 * direction.type = SDL_HAPTIC_POLAR; // We'll be using polar direction encoding.
426 * direction.dir[0] = 18000; // Polar only uses first parameter
428 * // Spherical coordinates
429 * direction.type = SDL_HAPTIC_SPHERICAL; // Spherical encoding
430 * direction.dir[0] = 9000; // Since we only have two axes we don't need more parameters.
433 * \sa SDL_HAPTIC_POLAR
434 * \sa SDL_HAPTIC_CARTESIAN
435 * \sa SDL_HAPTIC_SPHERICAL
436 * \sa SDL_HapticEffect
437 * \sa SDL_HapticNumAxes
439 typedef struct SDL_HapticDirection
441 Uint8 type; /**< The type of encoding. */
442 Sint32 dir[3]; /**< The encoded direction. */
443 } SDL_HapticDirection;
447 * \brief A structure containing a template for a Constant effect.
449 * The struct is exclusive to the ::SDL_HAPTIC_CONSTANT effect.
451 * A constant effect applies a constant force in the specified direction
454 * \sa SDL_HAPTIC_CONSTANT
455 * \sa SDL_HapticEffect
457 typedef struct SDL_HapticConstant
460 Uint16 type; /**< ::SDL_HAPTIC_CONSTANT */
461 SDL_HapticDirection direction; /**< Direction of the effect. */
464 Uint32 length; /**< Duration of the effect. */
465 Uint16 delay; /**< Delay before starting the effect. */
468 Uint16 button; /**< Button that triggers the effect. */
469 Uint16 interval; /**< How soon it can be triggered again after button. */
472 Sint16 level; /**< Strength of the constant effect. */
475 Uint16 attack_length; /**< Duration of the attack. */
476 Uint16 attack_level; /**< Level at the start of the attack. */
477 Uint16 fade_length; /**< Duration of the fade. */
478 Uint16 fade_level; /**< Level at the end of the fade. */
479 } SDL_HapticConstant;
482 * \brief A structure containing a template for a Periodic effect.
484 * The struct handles the following effects:
485 * - ::SDL_HAPTIC_SINE
486 * - ::SDL_HAPTIC_LEFTRIGHT
487 * - ::SDL_HAPTIC_TRIANGLE
488 * - ::SDL_HAPTIC_SAWTOOTHUP
489 * - ::SDL_HAPTIC_SAWTOOTHDOWN
491 * A periodic effect consists in a wave-shaped effect that repeats itself
492 * over time. The type determines the shape of the wave and the parameters
493 * determine the dimensions of the wave.
495 * Phase is given by hundredth of a cycle meaning that giving the phase a value
496 * of 9000 will displace it 25% of its period. Here are sample values:
497 * - 0: No phase displacement.
498 * - 9000: Displaced 25% of its period.
499 * - 18000: Displaced 50% of its period.
500 * - 27000: Displaced 75% of its period.
501 * - 36000: Displaced 100% of its period, same as 0, but 0 is preferred.
513 | |__| |__| |__| |__| |
520 SDL_HAPTIC_SAWTOOTHUP
522 / | / | / | / | / | / | / |
523 / |/ |/ |/ |/ |/ |/ |
525 SDL_HAPTIC_SAWTOOTHDOWN
526 \ |\ |\ |\ |\ |\ |\ |
527 \ | \ | \ | \ | \ | \ | \ |
531 * \sa SDL_HAPTIC_SINE
532 * \sa SDL_HAPTIC_LEFTRIGHT
533 * \sa SDL_HAPTIC_TRIANGLE
534 * \sa SDL_HAPTIC_SAWTOOTHUP
535 * \sa SDL_HAPTIC_SAWTOOTHDOWN
536 * \sa SDL_HapticEffect
538 typedef struct SDL_HapticPeriodic
541 Uint16 type; /**< ::SDL_HAPTIC_SINE, ::SDL_HAPTIC_LEFTRIGHT,
542 ::SDL_HAPTIC_TRIANGLE, ::SDL_HAPTIC_SAWTOOTHUP or
543 ::SDL_HAPTIC_SAWTOOTHDOWN */
544 SDL_HapticDirection direction; /**< Direction of the effect. */
547 Uint32 length; /**< Duration of the effect. */
548 Uint16 delay; /**< Delay before starting the effect. */
551 Uint16 button; /**< Button that triggers the effect. */
552 Uint16 interval; /**< How soon it can be triggered again after button. */
555 Uint16 period; /**< Period of the wave. */
556 Sint16 magnitude; /**< Peak value. */
557 Sint16 offset; /**< Mean value of the wave. */
558 Uint16 phase; /**< Horizontal shift given by hundredth of a cycle. */
561 Uint16 attack_length; /**< Duration of the attack. */
562 Uint16 attack_level; /**< Level at the start of the attack. */
563 Uint16 fade_length; /**< Duration of the fade. */
564 Uint16 fade_level; /**< Level at the end of the fade. */
565 } SDL_HapticPeriodic;
568 * \brief A structure containing a template for a Condition effect.
570 * The struct handles the following effects:
571 * - ::SDL_HAPTIC_SPRING: Effect based on axes position.
572 * - ::SDL_HAPTIC_DAMPER: Effect based on axes velocity.
573 * - ::SDL_HAPTIC_INERTIA: Effect based on axes acceleration.
574 * - ::SDL_HAPTIC_FRICTION: Effect based on axes movement.
576 * Direction is handled by condition internals instead of a direction member.
577 * The condition effect specific members have three parameters. The first
578 * refers to the X axis, the second refers to the Y axis and the third
579 * refers to the Z axis. The right terms refer to the positive side of the
580 * axis and the left terms refer to the negative side of the axis. Please
581 * refer to the ::SDL_HapticDirection diagram for which side is positive and
584 * \sa SDL_HapticDirection
585 * \sa SDL_HAPTIC_SPRING
586 * \sa SDL_HAPTIC_DAMPER
587 * \sa SDL_HAPTIC_INERTIA
588 * \sa SDL_HAPTIC_FRICTION
589 * \sa SDL_HapticEffect
591 typedef struct SDL_HapticCondition
594 Uint16 type; /**< ::SDL_HAPTIC_SPRING, ::SDL_HAPTIC_DAMPER,
595 ::SDL_HAPTIC_INERTIA or ::SDL_HAPTIC_FRICTION */
596 SDL_HapticDirection direction; /**< Direction of the effect - Not used ATM. */
599 Uint32 length; /**< Duration of the effect. */
600 Uint16 delay; /**< Delay before starting the effect. */
603 Uint16 button; /**< Button that triggers the effect. */
604 Uint16 interval; /**< How soon it can be triggered again after button. */
607 Uint16 right_sat[3]; /**< Level when joystick is to the positive side. */
608 Uint16 left_sat[3]; /**< Level when joystick is to the negative side. */
609 Sint16 right_coeff[3]; /**< How fast to increase the force towards the positive side. */
610 Sint16 left_coeff[3]; /**< How fast to increase the force towards the negative side. */
611 Uint16 deadband[3]; /**< Size of the dead zone. */
612 Sint16 center[3]; /**< Position of the dead zone. */
613 } SDL_HapticCondition;
616 * \brief A structure containing a template for a Ramp effect.
618 * This struct is exclusively for the ::SDL_HAPTIC_RAMP effect.
620 * The ramp effect starts at start strength and ends at end strength.
621 * It augments in linear fashion. If you use attack and fade with a ramp
622 * the effects get added to the ramp effect making the effect become
623 * quadratic instead of linear.
625 * \sa SDL_HAPTIC_RAMP
626 * \sa SDL_HapticEffect
628 typedef struct SDL_HapticRamp
631 Uint16 type; /**< ::SDL_HAPTIC_RAMP */
632 SDL_HapticDirection direction; /**< Direction of the effect. */
635 Uint32 length; /**< Duration of the effect. */
636 Uint16 delay; /**< Delay before starting the effect. */
639 Uint16 button; /**< Button that triggers the effect. */
640 Uint16 interval; /**< How soon it can be triggered again after button. */
643 Sint16 start; /**< Beginning strength level. */
644 Sint16 end; /**< Ending strength level. */
647 Uint16 attack_length; /**< Duration of the attack. */
648 Uint16 attack_level; /**< Level at the start of the attack. */
649 Uint16 fade_length; /**< Duration of the fade. */
650 Uint16 fade_level; /**< Level at the end of the fade. */
654 * \brief A structure containing a template for a Left/Right effect.
656 * This struct is exclusively for the ::SDL_HAPTIC_LEFTRIGHT effect.
658 * The Left/Right effect is used to explicitly control the large and small
659 * motors, commonly found in modern game controllers. One motor is high
660 * frequency, the other is low frequency.
662 * \sa SDL_HAPTIC_LEFTRIGHT
663 * \sa SDL_HapticEffect
665 typedef struct SDL_HapticLeftRight
668 Uint16 type; /**< ::SDL_HAPTIC_LEFTRIGHT */
671 Uint32 length; /**< Duration of the effect. */
674 Uint16 large_magnitude; /**< Control of the large controller motor. */
675 Uint16 small_magnitude; /**< Control of the small controller motor. */
676 } SDL_HapticLeftRight;
679 * \brief A structure containing a template for the ::SDL_HAPTIC_CUSTOM effect.
681 * A custom force feedback effect is much like a periodic effect, where the
682 * application can define its exact shape. You will have to allocate the
683 * data yourself. Data should consist of channels * samples Uint16 samples.
685 * If channels is one, the effect is rotated using the defined direction.
686 * Otherwise it uses the samples in data for the different axes.
688 * \sa SDL_HAPTIC_CUSTOM
689 * \sa SDL_HapticEffect
691 typedef struct SDL_HapticCustom
694 Uint16 type; /**< ::SDL_HAPTIC_CUSTOM */
695 SDL_HapticDirection direction; /**< Direction of the effect. */
698 Uint32 length; /**< Duration of the effect. */
699 Uint16 delay; /**< Delay before starting the effect. */
702 Uint16 button; /**< Button that triggers the effect. */
703 Uint16 interval; /**< How soon it can be triggered again after button. */
706 Uint8 channels; /**< Axes to use, minimum of one. */
707 Uint16 period; /**< Sample periods. */
708 Uint16 samples; /**< Amount of samples. */
709 Uint16 *data; /**< Should contain channels*samples items. */
712 Uint16 attack_length; /**< Duration of the attack. */
713 Uint16 attack_level; /**< Level at the start of the attack. */
714 Uint16 fade_length; /**< Duration of the fade. */
715 Uint16 fade_level; /**< Level at the end of the fade. */
719 * \brief The generic template for any haptic effect.
721 * All values max at 32767 (0x7FFF). Signed values also can be negative.
722 * Time values unless specified otherwise are in milliseconds.
724 * You can also pass ::SDL_HAPTIC_INFINITY to length instead of a 0-32767
725 * value. Neither delay, interval, attack_length nor fade_length support
726 * ::SDL_HAPTIC_INFINITY. Fade will also not be used since effect never ends.
728 * Additionally, the ::SDL_HAPTIC_RAMP effect does not support a duration of
729 * ::SDL_HAPTIC_INFINITY.
731 * Button triggers may not be supported on all devices, it is advised to not
732 * use them if possible. Buttons start at index 1 instead of index 0 like
735 * If both attack_length and fade_level are 0, the envelope is not used,
736 * otherwise both values are used.
740 * // Replay - All effects have this
741 * Uint32 length; // Duration of effect (ms).
742 * Uint16 delay; // Delay before starting effect.
744 * // Trigger - All effects have this
745 * Uint16 button; // Button that triggers effect.
746 * Uint16 interval; // How soon before effect can be triggered again.
748 * // Envelope - All effects except condition effects have this
749 * Uint16 attack_length; // Duration of the attack (ms).
750 * Uint16 attack_level; // Level at the start of the attack.
751 * Uint16 fade_length; // Duration of the fade out (ms).
752 * Uint16 fade_level; // Level at the end of the fade.
756 * Here we have an example of a constant effect evolution in time:
761 | effect level --> _________________
766 | attack_level --> | \
767 | | | <--- fade_level
769 +--------------------------------------------------> Time
771 attack_length fade_length
773 [------------------][-----------------------]
777 * Note either the attack_level or the fade_level may be above the actual
780 * \sa SDL_HapticConstant
781 * \sa SDL_HapticPeriodic
782 * \sa SDL_HapticCondition
784 * \sa SDL_HapticLeftRight
785 * \sa SDL_HapticCustom
787 typedef union SDL_HapticEffect
789 /* Common for all force feedback effects */
790 Uint16 type; /**< Effect type. */
791 SDL_HapticConstant constant; /**< Constant effect. */
792 SDL_HapticPeriodic periodic; /**< Periodic effect. */
793 SDL_HapticCondition condition; /**< Condition effect. */
794 SDL_HapticRamp ramp; /**< Ramp effect. */
795 SDL_HapticLeftRight leftright; /**< Left/Right effect. */
796 SDL_HapticCustom custom; /**< Custom effect. */
800 /* Function prototypes */
802 * \brief Count the number of haptic devices attached to the system.
804 * \return Number of haptic devices detected on the system.
806 extern DECLSPEC int SDLCALL SDL_NumHaptics(void);
809 * \brief Get the implementation dependent name of a Haptic device.
811 * This can be called before any joysticks are opened.
812 * If no name can be found, this function returns NULL.
814 * \param device_index Index of the device to get its name.
815 * \return Name of the device or NULL on error.
819 extern DECLSPEC const char *SDLCALL SDL_HapticName(int device_index);
822 * \brief Opens a Haptic device for usage.
824 * The index passed as an argument refers to the N'th Haptic device on this
827 * When opening a haptic device, its gain will be set to maximum and
828 * autocenter will be disabled. To modify these values use
829 * SDL_HapticSetGain() and SDL_HapticSetAutocenter().
831 * \param device_index Index of the device to open.
832 * \return Device identifier or NULL on error.
834 * \sa SDL_HapticIndex
835 * \sa SDL_HapticOpenFromMouse
836 * \sa SDL_HapticOpenFromJoystick
837 * \sa SDL_HapticClose
838 * \sa SDL_HapticSetGain
839 * \sa SDL_HapticSetAutocenter
840 * \sa SDL_HapticPause
841 * \sa SDL_HapticStopAll
843 extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpen(int device_index);
846 * \brief Checks if the haptic device at index has been opened.
848 * \param device_index Index to check to see if it has been opened.
849 * \return 1 if it has been opened or 0 if it hasn't.
852 * \sa SDL_HapticIndex
854 extern DECLSPEC int SDLCALL SDL_HapticOpened(int device_index);
857 * \brief Gets the index of a haptic device.
859 * \param haptic Haptic device to get the index of.
860 * \return The index of the haptic device or -1 on error.
863 * \sa SDL_HapticOpened
865 extern DECLSPEC int SDLCALL SDL_HapticIndex(SDL_Haptic * haptic);
868 * \brief Gets whether or not the current mouse has haptic capabilities.
870 * \return SDL_TRUE if the mouse is haptic, SDL_FALSE if it isn't.
872 * \sa SDL_HapticOpenFromMouse
874 extern DECLSPEC int SDLCALL SDL_MouseIsHaptic(void);
877 * \brief Tries to open a haptic device from the current mouse.
879 * \return The haptic device identifier or NULL on error.
881 * \sa SDL_MouseIsHaptic
884 extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromMouse(void);
887 * \brief Checks to see if a joystick has haptic features.
889 * \param joystick Joystick to test for haptic capabilities.
890 * \return 1 if the joystick is haptic, 0 if it isn't
891 * or -1 if an error ocurred.
893 * \sa SDL_HapticOpenFromJoystick
895 extern DECLSPEC int SDLCALL SDL_JoystickIsHaptic(SDL_Joystick * joystick);
898 * \brief Opens a Haptic device for usage from a Joystick device.
900 * You must still close the haptic device seperately. It will not be closed
903 * When opening from a joystick you should first close the haptic device before
904 * closing the joystick device. If not, on some implementations the haptic
905 * device will also get unallocated and you'll be unable to use force feedback
908 * \param joystick Joystick to create a haptic device from.
909 * \return A valid haptic device identifier on success or NULL on error.
912 * \sa SDL_HapticClose
914 extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromJoystick(SDL_Joystick *
918 * \brief Closes a Haptic device previously opened with SDL_HapticOpen().
920 * \param haptic Haptic device to close.
922 extern DECLSPEC void SDLCALL SDL_HapticClose(SDL_Haptic * haptic);
925 * \brief Returns the number of effects a haptic device can store.
927 * On some platforms this isn't fully supported, and therefore is an
928 * approximation. Always check to see if your created effect was actually
929 * created and do not rely solely on SDL_HapticNumEffects().
931 * \param haptic The haptic device to query effect max.
932 * \return The number of effects the haptic device can store or
935 * \sa SDL_HapticNumEffectsPlaying
936 * \sa SDL_HapticQuery
938 extern DECLSPEC int SDLCALL SDL_HapticNumEffects(SDL_Haptic * haptic);
941 * \brief Returns the number of effects a haptic device can play at the same
944 * This is not supported on all platforms, but will always return a value.
945 * Added here for the sake of completeness.
947 * \param haptic The haptic device to query maximum playing effects.
948 * \return The number of effects the haptic device can play at the same time
951 * \sa SDL_HapticNumEffects
952 * \sa SDL_HapticQuery
954 extern DECLSPEC int SDLCALL SDL_HapticNumEffectsPlaying(SDL_Haptic * haptic);
957 * \brief Gets the haptic devices supported features in bitwise matter.
961 * if (SDL_HapticQuery(haptic) & SDL_HAPTIC_CONSTANT) {
962 * printf("We have constant haptic effect!");
966 * \param haptic The haptic device to query.
967 * \return Haptic features in bitwise manner (OR'd).
969 * \sa SDL_HapticNumEffects
970 * \sa SDL_HapticEffectSupported
972 extern DECLSPEC unsigned int SDLCALL SDL_HapticQuery(SDL_Haptic * haptic);
976 * \brief Gets the number of haptic axes the device has.
978 * \sa SDL_HapticDirection
980 extern DECLSPEC int SDLCALL SDL_HapticNumAxes(SDL_Haptic * haptic);
983 * \brief Checks to see if effect is supported by haptic.
985 * \param haptic Haptic device to check on.
986 * \param effect Effect to check to see if it is supported.
987 * \return SDL_TRUE if effect is supported, SDL_FALSE if it isn't or -1 on error.
989 * \sa SDL_HapticQuery
990 * \sa SDL_HapticNewEffect
992 extern DECLSPEC int SDLCALL SDL_HapticEffectSupported(SDL_Haptic * haptic,
997 * \brief Creates a new haptic effect on the device.
999 * \param haptic Haptic device to create the effect on.
1000 * \param effect Properties of the effect to create.
1001 * \return The id of the effect on success or -1 on error.
1003 * \sa SDL_HapticUpdateEffect
1004 * \sa SDL_HapticRunEffect
1005 * \sa SDL_HapticDestroyEffect
1007 extern DECLSPEC int SDLCALL SDL_HapticNewEffect(SDL_Haptic * haptic,
1008 SDL_HapticEffect * effect);
1011 * \brief Updates the properties of an effect.
1013 * Can be used dynamically, although behaviour when dynamically changing
1014 * direction may be strange. Specifically the effect may reupload itself
1015 * and start playing from the start. You cannot change the type either when
1016 * running SDL_HapticUpdateEffect().
1018 * \param haptic Haptic device that has the effect.
1019 * \param effect Effect to update.
1020 * \param data New effect properties to use.
1021 * \return 0 on success or -1 on error.
1023 * \sa SDL_HapticNewEffect
1024 * \sa SDL_HapticRunEffect
1025 * \sa SDL_HapticDestroyEffect
1027 extern DECLSPEC int SDLCALL SDL_HapticUpdateEffect(SDL_Haptic * haptic,
1029 SDL_HapticEffect * data);
1032 * \brief Runs the haptic effect on its associated haptic device.
1034 * If iterations are ::SDL_HAPTIC_INFINITY, it'll run the effect over and over
1035 * repeating the envelope (attack and fade) every time. If you only want the
1036 * effect to last forever, set ::SDL_HAPTIC_INFINITY in the effect's length
1039 * \param haptic Haptic device to run the effect on.
1040 * \param effect Identifier of the haptic effect to run.
1041 * \param iterations Number of iterations to run the effect. Use
1042 * ::SDL_HAPTIC_INFINITY for infinity.
1043 * \return 0 on success or -1 on error.
1045 * \sa SDL_HapticStopEffect
1046 * \sa SDL_HapticDestroyEffect
1047 * \sa SDL_HapticGetEffectStatus
1049 extern DECLSPEC int SDLCALL SDL_HapticRunEffect(SDL_Haptic * haptic,
1054 * \brief Stops the haptic effect on its associated haptic device.
1056 * \param haptic Haptic device to stop the effect on.
1057 * \param effect Identifier of the effect to stop.
1058 * \return 0 on success or -1 on error.
1060 * \sa SDL_HapticRunEffect
1061 * \sa SDL_HapticDestroyEffect
1063 extern DECLSPEC int SDLCALL SDL_HapticStopEffect(SDL_Haptic * haptic,
1067 * \brief Destroys a haptic effect on the device.
1069 * This will stop the effect if it's running. Effects are automatically
1070 * destroyed when the device is closed.
1072 * \param haptic Device to destroy the effect on.
1073 * \param effect Identifier of the effect to destroy.
1075 * \sa SDL_HapticNewEffect
1077 extern DECLSPEC void SDLCALL SDL_HapticDestroyEffect(SDL_Haptic * haptic,
1081 * \brief Gets the status of the current effect on the haptic device.
1083 * Device must support the ::SDL_HAPTIC_STATUS feature.
1085 * \param haptic Haptic device to query the effect status on.
1086 * \param effect Identifier of the effect to query its status.
1087 * \return 0 if it isn't playing, 1 if it is playing or -1 on error.
1089 * \sa SDL_HapticRunEffect
1090 * \sa SDL_HapticStopEffect
1092 extern DECLSPEC int SDLCALL SDL_HapticGetEffectStatus(SDL_Haptic * haptic,
1096 * \brief Sets the global gain of the device.
1098 * Device must support the ::SDL_HAPTIC_GAIN feature.
1100 * The user may specify the maximum gain by setting the environment variable
1101 * SDL_HAPTIC_GAIN_MAX which should be between 0 and 100. All calls to
1102 * SDL_HapticSetGain() will scale linearly using SDL_HAPTIC_GAIN_MAX as the
1105 * \param haptic Haptic device to set the gain on.
1106 * \param gain Value to set the gain to, should be between 0 and 100.
1107 * \return 0 on success or -1 on error.
1109 * \sa SDL_HapticQuery
1111 extern DECLSPEC int SDLCALL SDL_HapticSetGain(SDL_Haptic * haptic, int gain);
1114 * \brief Sets the global autocenter of the device.
1116 * Autocenter should be between 0 and 100. Setting it to 0 will disable
1119 * Device must support the ::SDL_HAPTIC_AUTOCENTER feature.
1121 * \param haptic Haptic device to set autocentering on.
1122 * \param autocenter Value to set autocenter to, 0 disables autocentering.
1123 * \return 0 on success or -1 on error.
1125 * \sa SDL_HapticQuery
1127 extern DECLSPEC int SDLCALL SDL_HapticSetAutocenter(SDL_Haptic * haptic,
1131 * \brief Pauses a haptic device.
1133 * Device must support the ::SDL_HAPTIC_PAUSE feature. Call
1134 * SDL_HapticUnpause() to resume playback.
1136 * Do not modify the effects nor add new ones while the device is paused.
1137 * That can cause all sorts of weird errors.
1139 * \param haptic Haptic device to pause.
1140 * \return 0 on success or -1 on error.
1142 * \sa SDL_HapticUnpause
1144 extern DECLSPEC int SDLCALL SDL_HapticPause(SDL_Haptic * haptic);
1147 * \brief Unpauses a haptic device.
1149 * Call to unpause after SDL_HapticPause().
1151 * \param haptic Haptic device to pause.
1152 * \return 0 on success or -1 on error.
1154 * \sa SDL_HapticPause
1156 extern DECLSPEC int SDLCALL SDL_HapticUnpause(SDL_Haptic * haptic);
1159 * \brief Stops all the currently playing effects on a haptic device.
1161 * \param haptic Haptic device to stop.
1162 * \return 0 on success or -1 on error.
1164 extern DECLSPEC int SDLCALL SDL_HapticStopAll(SDL_Haptic * haptic);
1167 * \brief Checks to see if rumble is supported on a haptic device.
1169 * \param haptic Haptic device to check to see if it supports rumble.
1170 * \return SDL_TRUE if effect is supported, SDL_FALSE if it isn't or -1 on error.
1172 * \sa SDL_HapticRumbleInit
1173 * \sa SDL_HapticRumblePlay
1174 * \sa SDL_HapticRumbleStop
1176 extern DECLSPEC int SDLCALL SDL_HapticRumbleSupported(SDL_Haptic * haptic);
1179 * \brief Initializes the haptic device for simple rumble playback.
1181 * \param haptic Haptic device to initialize for simple rumble playback.
1182 * \return 0 on success or -1 on error.
1184 * \sa SDL_HapticOpen
1185 * \sa SDL_HapticRumbleSupported
1186 * \sa SDL_HapticRumblePlay
1187 * \sa SDL_HapticRumbleStop
1189 extern DECLSPEC int SDLCALL SDL_HapticRumbleInit(SDL_Haptic * haptic);
1192 * \brief Runs simple rumble on a haptic device
1194 * \param haptic Haptic device to play rumble effect on.
1195 * \param strength Strength of the rumble to play as a 0-1 float value.
1196 * \param length Length of the rumble to play in milliseconds.
1197 * \return 0 on success or -1 on error.
1199 * \sa SDL_HapticRumbleSupported
1200 * \sa SDL_HapticRumbleInit
1201 * \sa SDL_HapticRumbleStop
1203 extern DECLSPEC int SDLCALL SDL_HapticRumblePlay(SDL_Haptic * haptic, float strength, Uint32 length );
1206 * \brief Stops the simple rumble on a haptic device.
1208 * \param haptic Haptic to stop the rumble on.
1209 * \return 0 on success or -1 on error.
1211 * \sa SDL_HapticRumbleSupported
1212 * \sa SDL_HapticRumbleInit
1213 * \sa SDL_HapticRumblePlay
1215 extern DECLSPEC int SDLCALL SDL_HapticRumbleStop(SDL_Haptic * haptic);
1217 /* Ends C function definitions when using C++ */
1221 #include "close_code.h"
1223 #endif /* _SDL_haptic_h */
1225 /* vi: set ts=4 sw=4 expandtab: */