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Diffstat (limited to 'vendor/SDL/include/SDL_haptic.h')
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diff --git a/vendor/SDL/include/SDL_haptic.h b/vendor/SDL/include/SDL_haptic.h new file mode 100644 index 0000000..60daefa --- /dev/null +++ b/vendor/SDL/include/SDL_haptic.h @@ -0,0 +1,1227 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2017 Sam Lantinga <[email protected]> + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * \file SDL_haptic.h + * + * \brief The SDL haptic subsystem allows you to control haptic (force feedback) + * devices. + * + * The basic usage is as follows: + * - Initialize the subsystem (::SDL_INIT_HAPTIC). + * - Open a haptic device. + * - SDL_HapticOpen() to open from index. + * - SDL_HapticOpenFromJoystick() to open from an existing joystick. + * - Create an effect (::SDL_HapticEffect). + * - Upload the effect with SDL_HapticNewEffect(). + * - Run the effect with SDL_HapticRunEffect(). + * - (optional) Free the effect with SDL_HapticDestroyEffect(). + * - Close the haptic device with SDL_HapticClose(). + * + * \par Simple rumble example: + * \code + * SDL_Haptic *haptic; + * + * // Open the device + * haptic = SDL_HapticOpen( 0 ); + * if (haptic == NULL) + * return -1; + * + * // Initialize simple rumble + * if (SDL_HapticRumbleInit( haptic ) != 0) + * return -1; + * + * // Play effect at 50% strength for 2 seconds + * if (SDL_HapticRumblePlay( haptic, 0.5, 2000 ) != 0) + * return -1; + * SDL_Delay( 2000 ); + * + * // Clean up + * SDL_HapticClose( haptic ); + * \endcode + * + * \par Complete example: + * \code + * int test_haptic( SDL_Joystick * joystick ) { + * SDL_Haptic *haptic; + * SDL_HapticEffect effect; + * int effect_id; + * + * // Open the device + * haptic = SDL_HapticOpenFromJoystick( joystick ); + * if (haptic == NULL) return -1; // Most likely joystick isn't haptic + * + * // See if it can do sine waves + * if ((SDL_HapticQuery(haptic) & SDL_HAPTIC_SINE)==0) { + * SDL_HapticClose(haptic); // No sine effect + * return -1; + * } + * + * // Create the effect + * memset( &effect, 0, sizeof(SDL_HapticEffect) ); // 0 is safe default + * effect.type = SDL_HAPTIC_SINE; + * effect.periodic.direction.type = SDL_HAPTIC_POLAR; // Polar coordinates + * effect.periodic.direction.dir[0] = 18000; // Force comes from south + * effect.periodic.period = 1000; // 1000 ms + * effect.periodic.magnitude = 20000; // 20000/32767 strength + * effect.periodic.length = 5000; // 5 seconds long + * effect.periodic.attack_length = 1000; // Takes 1 second to get max strength + * effect.periodic.fade_length = 1000; // Takes 1 second to fade away + * + * // Upload the effect + * effect_id = SDL_HapticNewEffect( haptic, &effect ); + * + * // Test the effect + * SDL_HapticRunEffect( haptic, effect_id, 1 ); + * SDL_Delay( 5000); // Wait for the effect to finish + * + * // We destroy the effect, although closing the device also does this + * SDL_HapticDestroyEffect( haptic, effect_id ); + * + * // Close the device + * SDL_HapticClose(haptic); + * + * return 0; // Success + * } + * \endcode + */ + +#ifndef SDL_haptic_h_ +#define SDL_haptic_h_ + +#include "SDL_stdinc.h" +#include "SDL_error.h" +#include "SDL_joystick.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/** + * \typedef SDL_Haptic + * + * \brief The haptic structure used to identify an SDL haptic. + * + * \sa SDL_HapticOpen + * \sa SDL_HapticOpenFromJoystick + * \sa SDL_HapticClose + */ +struct _SDL_Haptic; +typedef struct _SDL_Haptic SDL_Haptic; + + +/** + * \name Haptic features + * + * Different haptic features a device can have. + */ +/* @{ */ + +/** + * \name Haptic effects + */ +/* @{ */ + +/** + * \brief Constant effect supported. + * + * Constant haptic effect. + * + * \sa SDL_HapticCondition + */ +#define SDL_HAPTIC_CONSTANT (1u<<0) + +/** + * \brief Sine wave effect supported. + * + * Periodic haptic effect that simulates sine waves. + * + * \sa SDL_HapticPeriodic + */ +#define SDL_HAPTIC_SINE (1u<<1) + +/** + * \brief Left/Right effect supported. + * + * Haptic effect for direct control over high/low frequency motors. + * + * \sa SDL_HapticLeftRight + * \warning this value was SDL_HAPTIC_SQUARE right before 2.0.0 shipped. Sorry, + * we ran out of bits, and this is important for XInput devices. + */ +#define SDL_HAPTIC_LEFTRIGHT (1u<<2) + +/* !!! FIXME: put this back when we have more bits in 2.1 */ +/* #define SDL_HAPTIC_SQUARE (1<<2) */ + +/** + * \brief Triangle wave effect supported. + * + * Periodic haptic effect that simulates triangular waves. + * + * \sa SDL_HapticPeriodic + */ +#define SDL_HAPTIC_TRIANGLE (1u<<3) + +/** + * \brief Sawtoothup wave effect supported. + * + * Periodic haptic effect that simulates saw tooth up waves. + * + * \sa SDL_HapticPeriodic + */ +#define SDL_HAPTIC_SAWTOOTHUP (1u<<4) + +/** + * \brief Sawtoothdown wave effect supported. + * + * Periodic haptic effect that simulates saw tooth down waves. + * + * \sa SDL_HapticPeriodic + */ +#define SDL_HAPTIC_SAWTOOTHDOWN (1u<<5) + +/** + * \brief Ramp effect supported. + * + * Ramp haptic effect. + * + * \sa SDL_HapticRamp + */ +#define SDL_HAPTIC_RAMP (1u<<6) + +/** + * \brief Spring effect supported - uses axes position. + * + * Condition haptic effect that simulates a spring. Effect is based on the + * axes position. + * + * \sa SDL_HapticCondition + */ +#define SDL_HAPTIC_SPRING (1u<<7) + +/** + * \brief Damper effect supported - uses axes velocity. + * + * Condition haptic effect that simulates dampening. Effect is based on the + * axes velocity. + * + * \sa SDL_HapticCondition + */ +#define SDL_HAPTIC_DAMPER (1u<<8) + +/** + * \brief Inertia effect supported - uses axes acceleration. + * + * Condition haptic effect that simulates inertia. Effect is based on the axes + * acceleration. + * + * \sa SDL_HapticCondition + */ +#define SDL_HAPTIC_INERTIA (1u<<9) + +/** + * \brief Friction effect supported - uses axes movement. + * + * Condition haptic effect that simulates friction. Effect is based on the + * axes movement. + * + * \sa SDL_HapticCondition + */ +#define SDL_HAPTIC_FRICTION (1u<<10) + +/** + * \brief Custom effect is supported. + * + * User defined custom haptic effect. + */ +#define SDL_HAPTIC_CUSTOM (1u<<11) + +/* @} *//* Haptic effects */ + +/* These last few are features the device has, not effects */ + +/** + * \brief Device can set global gain. + * + * Device supports setting the global gain. + * + * \sa SDL_HapticSetGain + */ +#define SDL_HAPTIC_GAIN (1u<<12) + +/** + * \brief Device can set autocenter. + * + * Device supports setting autocenter. + * + * \sa SDL_HapticSetAutocenter + */ +#define SDL_HAPTIC_AUTOCENTER (1u<<13) + +/** + * \brief Device can be queried for effect status. + * + * Device supports querying effect status. + * + * \sa SDL_HapticGetEffectStatus + */ +#define SDL_HAPTIC_STATUS (1u<<14) + +/** + * \brief Device can be paused. + * + * Devices supports being paused. + * + * \sa SDL_HapticPause + * \sa SDL_HapticUnpause + */ +#define SDL_HAPTIC_PAUSE (1u<<15) + + +/** + * \name Direction encodings + */ +/* @{ */ + +/** + * \brief Uses polar coordinates for the direction. + * + * \sa SDL_HapticDirection + */ +#define SDL_HAPTIC_POLAR 0 + +/** + * \brief Uses cartesian coordinates for the direction. + * + * \sa SDL_HapticDirection + */ +#define SDL_HAPTIC_CARTESIAN 1 + +/** + * \brief Uses spherical coordinates for the direction. + * + * \sa SDL_HapticDirection + */ +#define SDL_HAPTIC_SPHERICAL 2 + +/* @} *//* Direction encodings */ + +/* @} *//* Haptic features */ + +/* + * Misc defines. + */ + +/** + * \brief Used to play a device an infinite number of times. + * + * \sa SDL_HapticRunEffect + */ +#define SDL_HAPTIC_INFINITY 4294967295U + + +/** + * \brief 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: + * - ::SDL_HAPTIC_POLAR : Specified by polar coordinates. + * - ::SDL_HAPTIC_CARTESIAN : Specified by cartesian coordinates. + * - ::SDL_HAPTIC_SPHERICAL : Specified by spherical coordinates. + * + * 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: + * \verbatim + .--. + |__| .-------. + |=.| |.-----.| + |--| || || + | | |'-----'| + |__|~')_____(' + [ COMPUTER ] + + + North (0,-1) + ^ + | + | + (-1,0) West <----[ HAPTIC ]----> East (1,0) + | + | + v + South (0,1) + + + [ USER ] + \|||/ + (o o) + ---ooO-(_)-Ooo--- + \endverbatim + * + * 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 \c dir parameter. The cardinal directions would be: + * - North: 0 (0 degrees) + * - East: 9000 (90 degrees) + * - South: 18000 (180 degrees) + * - West: 27000 (270 degrees) + * + * 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 \c dir parameters. The cardinal directions would be: + * - North: 0,-1, 0 + * - East: 1, 0, 0 + * - South: 0, 1, 0 + * - West: -1, 0, 0 + * + * 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 \c dir parameters are used. The \c dir parameters are as + * follows (all values are in hundredths of degrees): + * - Degrees from (1, 0) rotated towards (0, 1). + * - Degrees towards (0, 0, 1) (device needs at least 3 axes). + * + * + * 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): + * \code + * SDL_HapticDirection direction; + * + * // Cartesian directions + * direction.type = SDL_HAPTIC_CARTESIAN; // Using cartesian direction encoding. + * direction.dir[0] = 0; // X position + * direction.dir[1] = 1; // Y position + * // Assuming the device has 2 axes, we don't need to specify third parameter. + * + * // Polar directions + * direction.type = SDL_HAPTIC_POLAR; // We'll be using polar direction encoding. + * direction.dir[0] = 18000; // Polar only uses first parameter + * + * // Spherical coordinates + * direction.type = SDL_HAPTIC_SPHERICAL; // Spherical encoding + * direction.dir[0] = 9000; // Since we only have two axes we don't need more parameters. + * \endcode + * + * \sa SDL_HAPTIC_POLAR + * \sa SDL_HAPTIC_CARTESIAN + * \sa SDL_HAPTIC_SPHERICAL + * \sa SDL_HapticEffect + * \sa SDL_HapticNumAxes + */ +typedef struct SDL_HapticDirection +{ + Uint8 type; /**< The type of encoding. */ + Sint32 dir[3]; /**< The encoded direction. */ +} SDL_HapticDirection; + + +/** + * \brief 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. + * + * \sa SDL_HAPTIC_CONSTANT + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticConstant +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_CONSTANT */ + SDL_HapticDirection direction; /**< Direction of the effect. */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + Uint16 delay; /**< Delay before starting the effect. */ + + /* Trigger */ + Uint16 button; /**< Button that triggers the effect. */ + Uint16 interval; /**< How soon it can be triggered again after button. */ + + /* Constant */ + Sint16 level; /**< Strength of the constant effect. */ + + /* Envelope */ + Uint16 attack_length; /**< Duration of the attack. */ + Uint16 attack_level; /**< Level at the start of the attack. */ + Uint16 fade_length; /**< Duration of the fade. */ + Uint16 fade_level; /**< Level at the end of the fade. */ +} SDL_HapticConstant; + +/** + * \brief A structure containing a template for a Periodic effect. + * + * The struct handles the following effects: + * - ::SDL_HAPTIC_SINE + * - ::SDL_HAPTIC_LEFTRIGHT + * - ::SDL_HAPTIC_TRIANGLE + * - ::SDL_HAPTIC_SAWTOOTHUP + * - ::SDL_HAPTIC_SAWTOOTHDOWN + * + * 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: + * - 0: No phase displacement. + * - 9000: Displaced 25% of its period. + * - 18000: Displaced 50% of its period. + * - 27000: Displaced 75% of its period. + * - 36000: Displaced 100% of its period, same as 0, but 0 is preferred. + * + * Examples: + * \verbatim + SDL_HAPTIC_SINE + __ __ __ __ + / \ / \ / \ / + / \__/ \__/ \__/ + + SDL_HAPTIC_SQUARE + __ __ __ __ __ + | | | | | | | | | | + | |__| |__| |__| |__| | + + SDL_HAPTIC_TRIANGLE + /\ /\ /\ /\ /\ + / \ / \ / \ / \ / + / \/ \/ \/ \/ + + SDL_HAPTIC_SAWTOOTHUP + /| /| /| /| /| /| /| + / | / | / | / | / | / | / | + / |/ |/ |/ |/ |/ |/ | + + SDL_HAPTIC_SAWTOOTHDOWN + \ |\ |\ |\ |\ |\ |\ | + \ | \ | \ | \ | \ | \ | \ | + \| \| \| \| \| \| \| + \endverbatim + * + * \sa SDL_HAPTIC_SINE + * \sa SDL_HAPTIC_LEFTRIGHT + * \sa SDL_HAPTIC_TRIANGLE + * \sa SDL_HAPTIC_SAWTOOTHUP + * \sa SDL_HAPTIC_SAWTOOTHDOWN + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticPeriodic +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_SINE, ::SDL_HAPTIC_LEFTRIGHT, + ::SDL_HAPTIC_TRIANGLE, ::SDL_HAPTIC_SAWTOOTHUP or + ::SDL_HAPTIC_SAWTOOTHDOWN */ + SDL_HapticDirection direction; /**< Direction of the effect. */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + Uint16 delay; /**< Delay before starting the effect. */ + + /* Trigger */ + Uint16 button; /**< Button that triggers the effect. */ + Uint16 interval; /**< How soon it can be triggered again after button. */ + + /* Periodic */ + Uint16 period; /**< Period of the wave. */ + Sint16 magnitude; /**< Peak value; if negative, equivalent to 180 degrees extra phase shift. */ + Sint16 offset; /**< Mean value of the wave. */ + Uint16 phase; /**< Positive phase shift given by hundredth of a degree. */ + + /* Envelope */ + Uint16 attack_length; /**< Duration of the attack. */ + Uint16 attack_level; /**< Level at the start of the attack. */ + Uint16 fade_length; /**< Duration of the fade. */ + Uint16 fade_level; /**< Level at the end of the fade. */ +} SDL_HapticPeriodic; + +/** + * \brief A structure containing a template for a Condition effect. + * + * The struct handles the following effects: + * - ::SDL_HAPTIC_SPRING: Effect based on axes position. + * - ::SDL_HAPTIC_DAMPER: Effect based on axes velocity. + * - ::SDL_HAPTIC_INERTIA: Effect based on axes acceleration. + * - ::SDL_HAPTIC_FRICTION: Effect based on axes movement. + * + * 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. + * + * \sa SDL_HapticDirection + * \sa SDL_HAPTIC_SPRING + * \sa SDL_HAPTIC_DAMPER + * \sa SDL_HAPTIC_INERTIA + * \sa SDL_HAPTIC_FRICTION + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticCondition +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_SPRING, ::SDL_HAPTIC_DAMPER, + ::SDL_HAPTIC_INERTIA or ::SDL_HAPTIC_FRICTION */ + SDL_HapticDirection direction; /**< Direction of the effect - Not used ATM. */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + Uint16 delay; /**< Delay before starting the effect. */ + + /* Trigger */ + Uint16 button; /**< Button that triggers the effect. */ + Uint16 interval; /**< How soon it can be triggered again after button. */ + + /* Condition */ + Uint16 right_sat[3]; /**< Level when joystick is to the positive side; max 0xFFFF. */ + Uint16 left_sat[3]; /**< Level when joystick is to the negative side; max 0xFFFF. */ + Sint16 right_coeff[3]; /**< How fast to increase the force towards the positive side. */ + Sint16 left_coeff[3]; /**< How fast to increase the force towards the negative side. */ + Uint16 deadband[3]; /**< Size of the dead zone; max 0xFFFF: whole axis-range when 0-centered. */ + Sint16 center[3]; /**< Position of the dead zone. */ +} SDL_HapticCondition; + +/** + * \brief 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. + * + * \sa SDL_HAPTIC_RAMP + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticRamp +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_RAMP */ + SDL_HapticDirection direction; /**< Direction of the effect. */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + Uint16 delay; /**< Delay before starting the effect. */ + + /* Trigger */ + Uint16 button; /**< Button that triggers the effect. */ + Uint16 interval; /**< How soon it can be triggered again after button. */ + + /* Ramp */ + Sint16 start; /**< Beginning strength level. */ + Sint16 end; /**< Ending strength level. */ + + /* Envelope */ + Uint16 attack_length; /**< Duration of the attack. */ + Uint16 attack_level; /**< Level at the start of the attack. */ + Uint16 fade_length; /**< Duration of the fade. */ + Uint16 fade_level; /**< Level at the end of the fade. */ +} SDL_HapticRamp; + +/** + * \brief 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. One motor is high + * frequency, the other is low frequency. + * + * \sa SDL_HAPTIC_LEFTRIGHT + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticLeftRight +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_LEFTRIGHT */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + + /* Rumble */ + Uint16 large_magnitude; /**< Control of the large controller motor. */ + Uint16 small_magnitude; /**< Control of the small controller motor. */ +} SDL_HapticLeftRight; + +/** + * \brief 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. + * + * \sa SDL_HAPTIC_CUSTOM + * \sa SDL_HapticEffect + */ +typedef struct SDL_HapticCustom +{ + /* Header */ + Uint16 type; /**< ::SDL_HAPTIC_CUSTOM */ + SDL_HapticDirection direction; /**< Direction of the effect. */ + + /* Replay */ + Uint32 length; /**< Duration of the effect. */ + Uint16 delay; /**< Delay before starting the effect. */ + + /* Trigger */ + Uint16 button; /**< Button that triggers the effect. */ + Uint16 interval; /**< How soon it can be triggered again after button. */ + + /* Custom */ + Uint8 channels; /**< Axes to use, minimum of one. */ + Uint16 period; /**< Sample periods. */ + Uint16 samples; /**< Amount of samples. */ + Uint16 *data; /**< Should contain channels*samples items. */ + + /* Envelope */ + Uint16 attack_length; /**< Duration of the attack. */ + Uint16 attack_level; /**< Level at the start of the attack. */ + Uint16 fade_length; /**< Duration of the fade. */ + Uint16 fade_level; /**< Level at the end of the fade. */ +} SDL_HapticCustom; + +/** + * \brief 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: + * \code + * // Replay - All effects have this + * Uint32 length; // Duration of effect (ms). + * Uint16 delay; // Delay before starting effect. + * + * // Trigger - All effects have this + * Uint16 button; // Button that triggers effect. + * Uint16 interval; // How soon before effect can be triggered again. + * + * // Envelope - All effects except condition effects have this + * Uint16 attack_length; // Duration of the attack (ms). + * Uint16 attack_level; // Level at the start of the attack. + * Uint16 fade_length; // Duration of the fade out (ms). + * Uint16 fade_level; // Level at the end of the fade. + * \endcode + * + * + * Here we have an example of a constant effect evolution in time: + * \verbatim + Strength + ^ + | + | effect level --> _________________ + | / \ + | / \ + | / \ + | / \ + | attack_level --> | \ + | | | <--- fade_level + | + +--------------------------------------------------> Time + [--] [---] + attack_length fade_length + + [------------------][-----------------------] + delay length + \endverbatim + * + * Note either the attack_level or the fade_level may be above the actual + * effect level. + * + * \sa SDL_HapticConstant + * \sa SDL_HapticPeriodic + * \sa SDL_HapticCondition + * \sa SDL_HapticRamp + * \sa SDL_HapticLeftRight + * \sa SDL_HapticCustom + */ +typedef union SDL_HapticEffect +{ + /* Common for all force feedback effects */ + Uint16 type; /**< Effect type. */ + SDL_HapticConstant constant; /**< Constant effect. */ + SDL_HapticPeriodic periodic; /**< Periodic effect. */ + SDL_HapticCondition condition; /**< Condition effect. */ + SDL_HapticRamp ramp; /**< Ramp effect. */ + SDL_HapticLeftRight leftright; /**< Left/Right effect. */ + SDL_HapticCustom custom; /**< Custom effect. */ +} SDL_HapticEffect; + + +/* Function prototypes */ +/** + * \brief Count the number of haptic devices attached to the system. + * + * \return Number of haptic devices detected on the system. + */ +extern DECLSPEC int SDLCALL SDL_NumHaptics(void); + +/** + * \brief 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. + * + * \param device_index Index of the device to get its name. + * \return Name of the device or NULL on error. + * + * \sa SDL_NumHaptics + */ +extern DECLSPEC const char *SDLCALL SDL_HapticName(int device_index); + +/** + * \brief Opens 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(). + * + * \param device_index Index of the device to open. + * \return Device identifier or NULL on error. + * + * \sa SDL_HapticIndex + * \sa SDL_HapticOpenFromMouse + * \sa SDL_HapticOpenFromJoystick + * \sa SDL_HapticClose + * \sa SDL_HapticSetGain + * \sa SDL_HapticSetAutocenter + * \sa SDL_HapticPause + * \sa SDL_HapticStopAll + */ +extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpen(int device_index); + +/** + * \brief Checks if the haptic device at index has been opened. + * + * \param device_index Index to check to see if it has been opened. + * \return 1 if it has been opened or 0 if it hasn't. + * + * \sa SDL_HapticOpen + * \sa SDL_HapticIndex + */ +extern DECLSPEC int SDLCALL SDL_HapticOpened(int device_index); + +/** + * \brief Gets the index of a haptic device. + * + * \param haptic Haptic device to get the index of. + * \return The index of the haptic device or -1 on error. + * + * \sa SDL_HapticOpen + * \sa SDL_HapticOpened + */ +extern DECLSPEC int SDLCALL SDL_HapticIndex(SDL_Haptic * haptic); + +/** + * \brief Gets whether or not the current mouse has haptic capabilities. + * + * \return SDL_TRUE if the mouse is haptic, SDL_FALSE if it isn't. + * + * \sa SDL_HapticOpenFromMouse + */ +extern DECLSPEC int SDLCALL SDL_MouseIsHaptic(void); + +/** + * \brief Tries to open a haptic device from the current mouse. + * + * \return The haptic device identifier or NULL on error. + * + * \sa SDL_MouseIsHaptic + * \sa SDL_HapticOpen + */ +extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromMouse(void); + +/** + * \brief Checks to see if a joystick has haptic features. + * + * \param joystick Joystick to test for haptic capabilities. + * \return SDL_TRUE if the joystick is haptic, SDL_FALSE if it isn't + * or -1 if an error occurred. + * + * \sa SDL_HapticOpenFromJoystick + */ +extern DECLSPEC int SDLCALL SDL_JoystickIsHaptic(SDL_Joystick * joystick); + +/** + * \brief Opens 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 opening 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. + * + * \param joystick Joystick to create a haptic device from. + * \return A valid haptic device identifier on success or NULL on error. + * + * \sa SDL_HapticOpen + * \sa SDL_HapticClose + */ +extern DECLSPEC SDL_Haptic *SDLCALL SDL_HapticOpenFromJoystick(SDL_Joystick * + joystick); + +/** + * \brief Closes a haptic device previously opened with SDL_HapticOpen(). + * + * \param haptic Haptic device to close. + */ +extern DECLSPEC void SDLCALL SDL_HapticClose(SDL_Haptic * haptic); + +/** + * \brief Returns 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(). + * + * \param haptic The haptic device to query effect max. + * \return The number of effects the haptic device can store or + * -1 on error. + * + * \sa SDL_HapticNumEffectsPlaying + * \sa SDL_HapticQuery + */ +extern DECLSPEC int SDLCALL SDL_HapticNumEffects(SDL_Haptic * haptic); + +/** + * \brief Returns 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. + * Added here for the sake of completeness. + * + * \param haptic The haptic device to query maximum playing effects. + * \return The number of effects the haptic device can play at the same time + * or -1 on error. + * + * \sa SDL_HapticNumEffects + * \sa SDL_HapticQuery + */ +extern DECLSPEC int SDLCALL SDL_HapticNumEffectsPlaying(SDL_Haptic * haptic); + +/** + * \brief Gets the haptic device's supported features in bitwise manner. + * + * Example: + * \code + * if (SDL_HapticQuery(haptic) & SDL_HAPTIC_CONSTANT) { + * printf("We have constant haptic effect!\n"); + * } + * \endcode + * + * \param haptic The haptic device to query. + * \return Haptic features in bitwise manner (OR'd). + * + * \sa SDL_HapticNumEffects + * \sa SDL_HapticEffectSupported + */ +extern DECLSPEC unsigned int SDLCALL SDL_HapticQuery(SDL_Haptic * haptic); + + +/** + * \brief Gets the number of haptic axes the device has. + * + * \sa SDL_HapticDirection + */ +extern DECLSPEC int SDLCALL SDL_HapticNumAxes(SDL_Haptic * haptic); + +/** + * \brief Checks to see if effect is supported by haptic. + * + * \param haptic Haptic device to check on. + * \param effect Effect to check to see if it is supported. + * \return SDL_TRUE if effect is supported, SDL_FALSE if it isn't or -1 on error. + * + * \sa SDL_HapticQuery + * \sa SDL_HapticNewEffect + */ +extern DECLSPEC int SDLCALL SDL_HapticEffectSupported(SDL_Haptic * haptic, + SDL_HapticEffect * + effect); + +/** + * \brief Creates a new haptic effect on the device. + * + * \param haptic Haptic device to create the effect on. + * \param effect Properties of the effect to create. + * \return The identifier of the effect on success or -1 on error. + * + * \sa SDL_HapticUpdateEffect + * \sa SDL_HapticRunEffect + * \sa SDL_HapticDestroyEffect + */ +extern DECLSPEC int SDLCALL SDL_HapticNewEffect(SDL_Haptic * haptic, + SDL_HapticEffect * effect); + +/** + * \brief Updates the properties of an effect. + * + * Can be used dynamically, although behavior when dynamically changing + * direction may be strange. Specifically the effect may reupload itself + * and start playing from the start. You cannot change the type either when + * running SDL_HapticUpdateEffect(). + * + * \param haptic Haptic device that has the effect. + * \param effect Identifier of the effect to update. + * \param data New effect properties to use. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticNewEffect + * \sa SDL_HapticRunEffect + * \sa SDL_HapticDestroyEffect + */ +extern DECLSPEC int SDLCALL SDL_HapticUpdateEffect(SDL_Haptic * haptic, + int effect, + SDL_HapticEffect * data); + +/** + * \brief Runs the haptic effect on its associated haptic device. + * + * If iterations are ::SDL_HAPTIC_INFINITY, it'll run the effect over and over + * repeating the envelope (attack and fade) every time. If you only want the + * effect to last forever, set ::SDL_HAPTIC_INFINITY in the effect's length + * parameter. + * + * \param haptic Haptic device to run the effect on. + * \param effect Identifier of the haptic effect to run. + * \param iterations Number of iterations to run the effect. Use + * ::SDL_HAPTIC_INFINITY for infinity. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticStopEffect + * \sa SDL_HapticDestroyEffect + * \sa SDL_HapticGetEffectStatus + */ +extern DECLSPEC int SDLCALL SDL_HapticRunEffect(SDL_Haptic * haptic, + int effect, + Uint32 iterations); + +/** + * \brief Stops the haptic effect on its associated haptic device. + * + * \param haptic Haptic device to stop the effect on. + * \param effect Identifier of the effect to stop. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticRunEffect + * \sa SDL_HapticDestroyEffect + */ +extern DECLSPEC int SDLCALL SDL_HapticStopEffect(SDL_Haptic * haptic, + int effect); + +/** + * \brief Destroys a haptic effect on the device. + * + * This will stop the effect if it's running. Effects are automatically + * destroyed when the device is closed. + * + * \param haptic Device to destroy the effect on. + * \param effect Identifier of the effect to destroy. + * + * \sa SDL_HapticNewEffect + */ +extern DECLSPEC void SDLCALL SDL_HapticDestroyEffect(SDL_Haptic * haptic, + int effect); + +/** + * \brief Gets the status of the current effect on the haptic device. + * + * Device must support the ::SDL_HAPTIC_STATUS feature. + * + * \param haptic Haptic device to query the effect status on. + * \param effect Identifier of the effect to query its status. + * \return 0 if it isn't playing, 1 if it is playing or -1 on error. + * + * \sa SDL_HapticRunEffect + * \sa SDL_HapticStopEffect + */ +extern DECLSPEC int SDLCALL SDL_HapticGetEffectStatus(SDL_Haptic * haptic, + int effect); + +/** + * \brief Sets the global gain of the 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. + * + * \param haptic Haptic device to set the gain on. + * \param gain Value to set the gain to, should be between 0 and 100. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticQuery + */ +extern DECLSPEC int SDLCALL SDL_HapticSetGain(SDL_Haptic * haptic, int gain); + +/** + * \brief Sets 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. + * + * \param haptic Haptic device to set autocentering on. + * \param autocenter Value to set autocenter to, 0 disables autocentering. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticQuery + */ +extern DECLSPEC int SDLCALL SDL_HapticSetAutocenter(SDL_Haptic * haptic, + int autocenter); + +/** + * \brief Pauses 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. + * + * \param haptic Haptic device to pause. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticUnpause + */ +extern DECLSPEC int SDLCALL SDL_HapticPause(SDL_Haptic * haptic); + +/** + * \brief Unpauses a haptic device. + * + * Call to unpause after SDL_HapticPause(). + * + * \param haptic Haptic device to unpause. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticPause + */ +extern DECLSPEC int SDLCALL SDL_HapticUnpause(SDL_Haptic * haptic); + +/** + * \brief Stops all the currently playing effects on a haptic device. + * + * \param haptic Haptic device to stop. + * \return 0 on success or -1 on error. + */ +extern DECLSPEC int SDLCALL SDL_HapticStopAll(SDL_Haptic * haptic); + +/** + * \brief Checks to see if rumble is supported on a haptic device. + * + * \param haptic Haptic device to check to see if it supports rumble. + * \return SDL_TRUE if effect is supported, SDL_FALSE if it isn't or -1 on error. + * + * \sa SDL_HapticRumbleInit + * \sa SDL_HapticRumblePlay + * \sa SDL_HapticRumbleStop + */ +extern DECLSPEC int SDLCALL SDL_HapticRumbleSupported(SDL_Haptic * haptic); + +/** + * \brief Initializes the haptic device for simple rumble playback. + * + * \param haptic Haptic device to initialize for simple rumble playback. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticOpen + * \sa SDL_HapticRumbleSupported + * \sa SDL_HapticRumblePlay + * \sa SDL_HapticRumbleStop + */ +extern DECLSPEC int SDLCALL SDL_HapticRumbleInit(SDL_Haptic * haptic); + +/** + * \brief Runs simple rumble on a haptic device + * + * \param haptic Haptic device to play rumble effect on. + * \param strength Strength of the rumble to play as a 0-1 float value. + * \param length Length of the rumble to play in milliseconds. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticRumbleSupported + * \sa SDL_HapticRumbleInit + * \sa SDL_HapticRumbleStop + */ +extern DECLSPEC int SDLCALL SDL_HapticRumblePlay(SDL_Haptic * haptic, float strength, Uint32 length ); + +/** + * \brief Stops the simple rumble on a haptic device. + * + * \param haptic Haptic to stop the rumble on. + * \return 0 on success or -1 on error. + * + * \sa SDL_HapticRumbleSupported + * \sa SDL_HapticRumbleInit + * \sa SDL_HapticRumblePlay + */ +extern DECLSPEC int SDLCALL SDL_HapticRumbleStop(SDL_Haptic * haptic); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include "close_code.h" + +#endif /* SDL_haptic_h_ */ + +/* vi: set ts=4 sw=4 expandtab: */ |