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The SDL haptic subsystem allows you to control haptic (force feedback) devices. More...
#include "SDL_stdinc.h"
#include "SDL_error.h"
#include "SDL_joystick.h"
#include "begin_code.h"
#include "close_code.h"
Go to the source code of this file.
Data Structures | |
struct | SDL_HapticDirection |
Structure that represents a haptic direction. More... | |
struct | SDL_HapticConstant |
A structure containing a template for a Constant effect. More... | |
struct | SDL_HapticPeriodic |
A structure containing a template for a Periodic effect. More... | |
struct | SDL_HapticCondition |
A structure containing a template for a Condition effect. More... | |
struct | SDL_HapticRamp |
A structure containing a template for a Ramp effect. More... | |
struct | SDL_HapticLeftRight |
A structure containing a template for a Left/Right effect. More... | |
struct | SDL_HapticCustom |
A structure containing a template for the SDL_HAPTIC_CUSTOM effect. More... | |
union | SDL_HapticEffect |
The generic template for any haptic effect. More... | |
Macros | |
Haptic effects | |
#define | SDL_HAPTIC_CONSTANT (1u<<0) |
Constant effect supported. | |
#define | SDL_HAPTIC_SINE (1u<<1) |
Sine wave effect supported. | |
#define | SDL_HAPTIC_LEFTRIGHT (1u<<2) |
Left/Right effect supported. | |
#define | SDL_HAPTIC_TRIANGLE (1u<<3) |
Triangle wave effect supported. | |
#define | SDL_HAPTIC_SAWTOOTHUP (1u<<4) |
Sawtoothup wave effect supported. | |
#define | SDL_HAPTIC_SAWTOOTHDOWN (1u<<5) |
Sawtoothdown wave effect supported. | |
#define | SDL_HAPTIC_RAMP (1u<<6) |
Ramp effect supported. | |
#define | SDL_HAPTIC_SPRING (1u<<7) |
Spring effect supported - uses axes position. | |
#define | SDL_HAPTIC_DAMPER (1u<<8) |
Damper effect supported - uses axes velocity. | |
#define | SDL_HAPTIC_INERTIA (1u<<9) |
Inertia effect supported - uses axes acceleration. | |
#define | SDL_HAPTIC_FRICTION (1u<<10) |
Friction effect supported - uses axes movement. | |
#define | SDL_HAPTIC_CUSTOM (1u<<11) |
Custom effect is supported. | |
#define | SDL_HAPTIC_GAIN (1u<<12) |
Device can set global gain. | |
#define | SDL_HAPTIC_AUTOCENTER (1u<<13) |
Device can set autocenter. | |
#define | SDL_HAPTIC_STATUS (1u<<14) |
Device can be queried for effect status. | |
#define | SDL_HAPTIC_PAUSE (1u<<15) |
Device can be paused. | |
Typedefs | |
typedef struct _SDL_Haptic | SDL_Haptic |
The haptic structure used to identify an SDL haptic. | |
Direction encodings | |
#define | SDL_HAPTIC_POLAR 0 |
Uses polar coordinates for the direction. | |
#define | SDL_HAPTIC_CARTESIAN 1 |
Uses cartesian coordinates for the direction. | |
#define | SDL_HAPTIC_SPHERICAL 2 |
Uses spherical coordinates for the direction. | |
#define | SDL_HAPTIC_STEERING_AXIS 3 |
Use this value to play an effect on the steering wheel axis. This provides better compatibility across platforms and devices as SDL will guess the correct axis. | |
#define | SDL_HAPTIC_INFINITY 4294967295U |
Used to play a device an infinite number of times. | |
typedef struct SDL_HapticDirection | SDL_HapticDirection |
Structure that represents a haptic direction. | |
typedef struct SDL_HapticConstant | SDL_HapticConstant |
A structure containing a template for a Constant effect. | |
typedef struct SDL_HapticPeriodic | SDL_HapticPeriodic |
A structure containing a template for a Periodic effect. | |
typedef struct SDL_HapticCondition | SDL_HapticCondition |
A structure containing a template for a Condition effect. | |
typedef struct SDL_HapticRamp | SDL_HapticRamp |
A structure containing a template for a Ramp effect. | |
typedef struct SDL_HapticLeftRight | SDL_HapticLeftRight |
A structure containing a template for a Left/Right effect. | |
typedef struct SDL_HapticCustom | SDL_HapticCustom |
A structure containing a template for the SDL_HAPTIC_CUSTOM effect. | |
typedef union SDL_HapticEffect | SDL_HapticEffect |
The generic template for any haptic effect. | |
DECLSPEC int SDLCALL | SDL_NumHaptics (void) |
DECLSPEC const char *SDLCALL | SDL_HapticName (int device_index) |
DECLSPEC SDL_Haptic *SDLCALL | SDL_HapticOpen (int device_index) |
DECLSPEC int SDLCALL | SDL_HapticOpened (int device_index) |
DECLSPEC int SDLCALL | SDL_HapticIndex (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_MouseIsHaptic (void) |
DECLSPEC SDL_Haptic *SDLCALL | SDL_HapticOpenFromMouse (void) |
DECLSPEC int SDLCALL | SDL_JoystickIsHaptic (SDL_Joystick *joystick) |
DECLSPEC SDL_Haptic *SDLCALL | SDL_HapticOpenFromJoystick (SDL_Joystick *joystick) |
DECLSPEC void SDLCALL | SDL_HapticClose (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticNumEffects (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticNumEffectsPlaying (SDL_Haptic *haptic) |
DECLSPEC unsigned int SDLCALL | SDL_HapticQuery (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticNumAxes (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticEffectSupported (SDL_Haptic *haptic, SDL_HapticEffect *effect) |
DECLSPEC int SDLCALL | SDL_HapticNewEffect (SDL_Haptic *haptic, SDL_HapticEffect *effect) |
DECLSPEC int SDLCALL | SDL_HapticUpdateEffect (SDL_Haptic *haptic, int effect, SDL_HapticEffect *data) |
DECLSPEC int SDLCALL | SDL_HapticRunEffect (SDL_Haptic *haptic, int effect, Uint32 iterations) |
DECLSPEC int SDLCALL | SDL_HapticStopEffect (SDL_Haptic *haptic, int effect) |
DECLSPEC void SDLCALL | SDL_HapticDestroyEffect (SDL_Haptic *haptic, int effect) |
DECLSPEC int SDLCALL | SDL_HapticGetEffectStatus (SDL_Haptic *haptic, int effect) |
DECLSPEC int SDLCALL | SDL_HapticSetGain (SDL_Haptic *haptic, int gain) |
DECLSPEC int SDLCALL | SDL_HapticSetAutocenter (SDL_Haptic *haptic, int autocenter) |
DECLSPEC int SDLCALL | SDL_HapticPause (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticUnpause (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticStopAll (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticRumbleSupported (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticRumbleInit (SDL_Haptic *haptic) |
DECLSPEC int SDLCALL | SDL_HapticRumblePlay (SDL_Haptic *haptic, float strength, Uint32 length) |
DECLSPEC int SDLCALL | SDL_HapticRumbleStop (SDL_Haptic *haptic) |
The SDL haptic subsystem allows you to control haptic (force feedback) devices.
The basic usage is as follows:
#define SDL_HAPTIC_AUTOCENTER (1u<<13) |
#define SDL_HAPTIC_CARTESIAN 1 |
Uses cartesian coordinates for the direction.
#define SDL_HAPTIC_CONSTANT (1u<<0) |
#define SDL_HAPTIC_CUSTOM (1u<<11) |
Custom effect is supported.
User defined custom haptic effect.
#define SDL_HAPTIC_DAMPER (1u<<8) |
Damper effect supported - uses axes velocity.
Condition haptic effect that simulates dampening. Effect is based on the axes velocity.
#define SDL_HAPTIC_FRICTION (1u<<10) |
Friction effect supported - uses axes movement.
Condition haptic effect that simulates friction. Effect is based on the axes movement.
#define SDL_HAPTIC_GAIN (1u<<12) |
#define SDL_HAPTIC_INERTIA (1u<<9) |
Inertia effect supported - uses axes acceleration.
Condition haptic effect that simulates inertia. Effect is based on the axes acceleration.
#define SDL_HAPTIC_INFINITY 4294967295U |
Used to play a device an infinite number of times.
#define SDL_HAPTIC_LEFTRIGHT (1u<<2) |
Left/Right effect supported.
Haptic effect for direct control over high/low frequency motors.
#define SDL_HAPTIC_PAUSE (1u<<15) |
#define SDL_HAPTIC_POLAR 0 |
Uses polar coordinates for the direction.
#define SDL_HAPTIC_RAMP (1u<<6) |
#define SDL_HAPTIC_SAWTOOTHDOWN (1u<<5) |
Sawtoothdown wave effect supported.
Periodic haptic effect that simulates saw tooth down waves.
#define SDL_HAPTIC_SAWTOOTHUP (1u<<4) |
Sawtoothup wave effect supported.
Periodic haptic effect that simulates saw tooth up waves.
#define SDL_HAPTIC_SINE (1u<<1) |
Sine wave effect supported.
Periodic haptic effect that simulates sine waves.
#define SDL_HAPTIC_SPHERICAL 2 |
Uses spherical coordinates for the direction.
#define SDL_HAPTIC_SPRING (1u<<7) |
Spring effect supported - uses axes position.
Condition haptic effect that simulates a spring. Effect is based on the axes position.
#define SDL_HAPTIC_STATUS (1u<<14) |
Device can be queried for effect status.
Device supports querying effect status.
#define SDL_HAPTIC_STEERING_AXIS 3 |
Use this value to play an effect on the steering wheel axis. This provides better compatibility across platforms and devices as SDL will guess the correct axis.
#define SDL_HAPTIC_TRIANGLE (1u<<3) |
Triangle wave effect supported.
Periodic haptic effect that simulates triangular waves.
The haptic structure used to identify an SDL haptic.
typedef struct SDL_HapticCondition SDL_HapticCondition |
A structure containing a template for a Condition effect.
The struct handles the following effects:
Direction is handled by condition internals instead of a direction member. The condition effect specific members have three parameters. The first refers to the X axis, the second refers to the Y axis and the third refers to the Z axis. The right terms refer to the positive side of the axis and the left terms refer to the negative side of the axis. Please refer to the SDL_HapticDirection diagram for which side is positive and which is negative.
typedef struct SDL_HapticConstant SDL_HapticConstant |
A structure containing a template for a Constant effect.
This struct is exclusively for the SDL_HAPTIC_CONSTANT effect.
A constant effect applies a constant force in the specified direction to the joystick.
typedef struct SDL_HapticCustom SDL_HapticCustom |
A structure containing a template for the SDL_HAPTIC_CUSTOM effect.
This struct is exclusively for the SDL_HAPTIC_CUSTOM effect.
A custom force feedback effect is much like a periodic effect, where the application can define its exact shape. You will have to allocate the data yourself. Data should consist of channels * samples Uint16 samples.
If channels is one, the effect is rotated using the defined direction. Otherwise it uses the samples in data for the different axes.
typedef struct SDL_HapticDirection SDL_HapticDirection |
Structure that represents a haptic direction.
This is the direction where the force comes from, instead of the direction in which the force is exerted.
Directions can be specified by:
Cardinal directions of the haptic device are relative to the positioning of the device. North is considered to be away from the user.
The following diagram represents the cardinal directions:
.--. |__| .-------. |=.| |.-----.| |--| || || | | |'-----'| |__|~')_____(' [ COMPUTER ] North (0,-1) ^ | | (-1,0) West <----[ HAPTIC ]----> East (1,0) | | v South (0,1) [ USER ] \|||/ (o o) ---ooO-(_)-Ooo---
If type is SDL_HAPTIC_POLAR, direction is encoded by hundredths of a degree starting north and turning clockwise. SDL_HAPTIC_POLAR only uses the first dir
parameter. The cardinal directions would be:
If type is SDL_HAPTIC_CARTESIAN, direction is encoded by three positions (X axis, Y axis and Z axis (with 3 axes)). SDL_HAPTIC_CARTESIAN uses the first three dir
parameters. The cardinal directions would be:
The Z axis represents the height of the effect if supported, otherwise it's unused. In cartesian encoding (1, 2) would be the same as (2, 4), you can use any multiple you want, only the direction matters.
If type is SDL_HAPTIC_SPHERICAL, direction is encoded by two rotations. The first two dir
parameters are used. The dir
parameters are as follows (all values are in hundredths of degrees):
Example of force coming from the south with all encodings (force coming from the south means the user will have to pull the stick to counteract):
typedef union SDL_HapticEffect SDL_HapticEffect |
The generic template for any haptic effect.
All values max at 32767 (0x7FFF). Signed values also can be negative. Time values unless specified otherwise are in milliseconds.
You can also pass SDL_HAPTIC_INFINITY to length instead of a 0-32767 value. Neither delay, interval, attack_length nor fade_length support SDL_HAPTIC_INFINITY. Fade will also not be used since effect never ends.
Additionally, the SDL_HAPTIC_RAMP effect does not support a duration of SDL_HAPTIC_INFINITY.
Button triggers may not be supported on all devices, it is advised to not use them if possible. Buttons start at index 1 instead of index 0 like the joystick.
If both attack_length and fade_level are 0, the envelope is not used, otherwise both values are used.
Common parts:
Here we have an example of a constant effect evolution in time:
Strength ^ | | effect level --> _________________ | / \ | / \ | / \ | / \ | attack_level --> | \ | | | <--- fade_level | +--------------------------------------------------> Time [--] [---] attack_length fade_length [------------------][-----------------------] delay length
Note either the attack_level or the fade_level may be above the actual effect level.
typedef struct SDL_HapticLeftRight SDL_HapticLeftRight |
A structure containing a template for a Left/Right effect.
This struct is exclusively for the SDL_HAPTIC_LEFTRIGHT effect.
The Left/Right effect is used to explicitly control the large and small motors, commonly found in modern game controllers. The small (right) motor is high frequency, and the large (left) motor is low frequency.
typedef struct SDL_HapticPeriodic SDL_HapticPeriodic |
A structure containing a template for a Periodic effect.
The struct handles the following effects:
A periodic effect consists in a wave-shaped effect that repeats itself over time. The type determines the shape of the wave and the parameters determine the dimensions of the wave.
Phase is given by hundredth of a degree meaning that giving the phase a value of 9000 will displace it 25% of its period. Here are sample values:
Examples:
SDL_HAPTIC_SINE __ __ __ __ / \ / \ / \ / / \__/ \__/ \__/ SDL_HAPTIC_SQUARE __ __ __ __ __ | | | | | | | | | | | |__| |__| |__| |__| | SDL_HAPTIC_TRIANGLE /\ /\ /\ /\ /\ / \ / \ / \ / \ / / \/ \/ \/ \/ SDL_HAPTIC_SAWTOOTHUP /| /| /| /| /| /| /| / | / | / | / | / | / | / | / |/ |/ |/ |/ |/ |/ | SDL_HAPTIC_SAWTOOTHDOWN \ |\ |\ |\ |\ |\ |\ | \ | \ | \ | \ | \ | \ | \ | \| \| \| \| \| \| \|
typedef struct SDL_HapticRamp SDL_HapticRamp |
A structure containing a template for a Ramp effect.
This struct is exclusively for the SDL_HAPTIC_RAMP effect.
The ramp effect starts at start strength and ends at end strength. It augments in linear fashion. If you use attack and fade with a ramp the effects get added to the ramp effect making the effect become quadratic instead of linear.
DECLSPEC void SDLCALL SDL_HapticClose | ( | SDL_Haptic * | haptic | ) |
Close a haptic device previously opened with SDL_HapticOpen().
haptic | the SDL_Haptic device to close |
DECLSPEC void SDLCALL SDL_HapticDestroyEffect | ( | SDL_Haptic * | haptic, |
int | effect | ||
) |
Destroy a haptic effect on the device.
This will stop the effect if it's running. Effects are automatically destroyed when the device is closed.
haptic | the SDL_Haptic device to destroy the effect on |
effect | the ID of the haptic effect to destroy |
DECLSPEC int SDLCALL SDL_HapticEffectSupported | ( | SDL_Haptic * | haptic, |
SDL_HapticEffect * | effect | ||
) |
Check to see if an effect is supported by a haptic device.
haptic | the SDL_Haptic device to query |
effect | the desired effect to query |
DECLSPEC int SDLCALL SDL_HapticGetEffectStatus | ( | SDL_Haptic * | haptic, |
int | effect | ||
) |
Get the status of the current effect on the specified haptic device.
Device must support the SDL_HAPTIC_STATUS feature.
haptic | the SDL_Haptic device to query for the effect status on |
effect | the ID of the haptic effect to query its status |
DECLSPEC int SDLCALL SDL_HapticIndex | ( | SDL_Haptic * | haptic | ) |
Get the index of a haptic device.
haptic | the SDL_Haptic device to query |
DECLSPEC const char *SDLCALL SDL_HapticName | ( | int | device_index | ) |
Get the implementation dependent name of a haptic device.
This can be called before any joysticks are opened. If no name can be found, this function returns NULL.
device_index | index of the device to query. |
DECLSPEC int SDLCALL SDL_HapticNewEffect | ( | SDL_Haptic * | haptic, |
SDL_HapticEffect * | effect | ||
) |
Create a new haptic effect on a specified device.
haptic | an SDL_Haptic device to create the effect on |
effect | an SDL_HapticEffect structure containing the properties of the effect to create |
DECLSPEC int SDLCALL SDL_HapticNumAxes | ( | SDL_Haptic * | haptic | ) |
Get the number of haptic axes the device has.
The number of haptic axes might be useful if working with the SDL_HapticDirection effect.
haptic | the SDL_Haptic device to query |
DECLSPEC int SDLCALL SDL_HapticNumEffects | ( | SDL_Haptic * | haptic | ) |
Get the number of effects a haptic device can store.
On some platforms this isn't fully supported, and therefore is an approximation. Always check to see if your created effect was actually created and do not rely solely on SDL_HapticNumEffects().
haptic | the SDL_Haptic device to query |
DECLSPEC int SDLCALL SDL_HapticNumEffectsPlaying | ( | SDL_Haptic * | haptic | ) |
Get the number of effects a haptic device can play at the same time.
This is not supported on all platforms, but will always return a value.
haptic | the SDL_Haptic device to query maximum playing effects |
DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpen | ( | int | device_index | ) |
Open a haptic device for use.
The index passed as an argument refers to the N'th haptic device on this system.
When opening a haptic device, its gain will be set to maximum and autocenter will be disabled. To modify these values use SDL_HapticSetGain() and SDL_HapticSetAutocenter().
device_index | index of the device to open |
DECLSPEC int SDLCALL SDL_HapticOpened | ( | int | device_index | ) |
Check if the haptic device at the designated index has been opened.
device_index | the index of the device to query |
DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromJoystick | ( | SDL_Joystick * | joystick | ) |
Open a haptic device for use from a joystick device.
You must still close the haptic device separately. It will not be closed with the joystick.
When opened from a joystick you should first close the haptic device before closing the joystick device. If not, on some implementations the haptic device will also get unallocated and you'll be unable to use force feedback on that device.
joystick | the SDL_Joystick to create a haptic device from |
DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromMouse | ( | void | ) |
Try to open a haptic device from the current mouse.
DECLSPEC int SDLCALL SDL_HapticPause | ( | SDL_Haptic * | haptic | ) |
Pause a haptic device.
Device must support the SDL_HAPTIC_PAUSE
feature. Call SDL_HapticUnpause() to resume playback.
Do not modify the effects nor add new ones while the device is paused. That can cause all sorts of weird errors.
haptic | the SDL_Haptic device to pause |
DECLSPEC unsigned int SDLCALL SDL_HapticQuery | ( | SDL_Haptic * | haptic | ) |
Get the haptic device's supported features in bitwise manner.
haptic | the SDL_Haptic device to query |
DECLSPEC int SDLCALL SDL_HapticRumbleInit | ( | SDL_Haptic * | haptic | ) |
Initialize a haptic device for simple rumble playback.
haptic | the haptic device to initialize for simple rumble playback |
DECLSPEC int SDLCALL SDL_HapticRumblePlay | ( | SDL_Haptic * | haptic, |
float | strength, | ||
Uint32 | length | ||
) |
Run a simple rumble effect on a haptic device.
haptic | the haptic device to play the rumble effect on |
strength | strength of the rumble to play as a 0-1 float value |
length | length of the rumble to play in milliseconds |
DECLSPEC int SDLCALL SDL_HapticRumbleStop | ( | SDL_Haptic * | haptic | ) |
Stop the simple rumble on a haptic device.
haptic | the haptic device to stop the rumble effect on |
DECLSPEC int SDLCALL SDL_HapticRumbleSupported | ( | SDL_Haptic * | haptic | ) |
Check whether rumble is supported on a haptic device.
haptic | haptic device to check for rumble support |
DECLSPEC int SDLCALL SDL_HapticRunEffect | ( | SDL_Haptic * | haptic, |
int | effect, | ||
Uint32 | iterations | ||
) |
Run the haptic effect on its associated haptic device.
To repeat the effect over and over indefinitely, set iterations
to SDL_HAPTIC_INFINITY
. (Repeats the envelope - attack and fade.) To make one instance of the effect last indefinitely (so the effect does not fade), set the effect's length
in its structure/union to SDL_HAPTIC_INFINITY
instead.
haptic | the SDL_Haptic device to run the effect on |
effect | the ID of the haptic effect to run |
iterations | the number of iterations to run the effect; use SDL_HAPTIC_INFINITY to repeat forever |
DECLSPEC int SDLCALL SDL_HapticSetAutocenter | ( | SDL_Haptic * | haptic, |
int | autocenter | ||
) |
Set the global autocenter of the device.
Autocenter should be between 0 and 100. Setting it to 0 will disable autocentering.
Device must support the SDL_HAPTIC_AUTOCENTER feature.
haptic | the SDL_Haptic device to set autocentering on |
autocenter | value to set autocenter to (0-100) |
DECLSPEC int SDLCALL SDL_HapticSetGain | ( | SDL_Haptic * | haptic, |
int | gain | ||
) |
Set the global gain of the specified haptic device.
Device must support the SDL_HAPTIC_GAIN feature.
The user may specify the maximum gain by setting the environment variable SDL_HAPTIC_GAIN_MAX
which should be between 0 and 100. All calls to SDL_HapticSetGain() will scale linearly using SDL_HAPTIC_GAIN_MAX
as the maximum.
haptic | the SDL_Haptic device to set the gain on |
gain | value to set the gain to, should be between 0 and 100 (0 - 100) |
DECLSPEC int SDLCALL SDL_HapticStopAll | ( | SDL_Haptic * | haptic | ) |
Stop all the currently playing effects on a haptic device.
haptic | the SDL_Haptic device to stop |
DECLSPEC int SDLCALL SDL_HapticStopEffect | ( | SDL_Haptic * | haptic, |
int | effect | ||
) |
Stop the haptic effect on its associated haptic device.
haptic | the SDL_Haptic device to stop the effect on |
effect | the ID of the haptic effect to stop |
DECLSPEC int SDLCALL SDL_HapticUnpause | ( | SDL_Haptic * | haptic | ) |
Unpause a haptic device.
Call to unpause after SDL_HapticPause().
haptic | the SDL_Haptic device to unpause |
DECLSPEC int SDLCALL SDL_HapticUpdateEffect | ( | SDL_Haptic * | haptic, |
int | effect, | ||
SDL_HapticEffect * | data | ||
) |
Update the properties of an effect.
Can be used dynamically, although behavior when dynamically changing direction may be strange. Specifically the effect may re-upload itself and start playing from the start. You also cannot change the type either when running SDL_HapticUpdateEffect().
haptic | the SDL_Haptic device that has the effect |
effect | the identifier of the effect to update |
data | an SDL_HapticEffect structure containing the new effect properties to use |
DECLSPEC int SDLCALL SDL_JoystickIsHaptic | ( | SDL_Joystick * | joystick | ) |
Query if a joystick has haptic features.
joystick | the SDL_Joystick to test for haptic capabilities |
DECLSPEC int SDLCALL SDL_MouseIsHaptic | ( | void | ) |
Query whether or not the current mouse has haptic capabilities.
DECLSPEC int SDLCALL SDL_NumHaptics | ( | void | ) |
Count the number of haptic devices attached to the system.