--- /dev/null
+/*
+ Simple DirectMedia Layer
+ Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
+
+ 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
+ *
+ * You can also find out more information on my blog:
+ * http://bobbens.dyndns.org/journal/2010/sdl_haptic/
+ *
+ * \author Edgar Simo Serra
+ */
+
+#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 (1<<0)
+
+/**
+ * \brief Sine wave effect supported.
+ *
+ * Periodic haptic effect that simulates sine waves.
+ *
+ * \sa SDL_HapticPeriodic
+ */
+#define SDL_HAPTIC_SINE (1<<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 (1<<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 (1<<3)
+
+/**
+ * \brief Sawtoothup wave effect supported.
+ *
+ * Periodic haptic effect that simulates saw tooth up waves.
+ *
+ * \sa SDL_HapticPeriodic
+ */
+#define SDL_HAPTIC_SAWTOOTHUP (1<<4)
+
+/**
+ * \brief Sawtoothdown wave effect supported.
+ *
+ * Periodic haptic effect that simulates saw tooth down waves.
+ *
+ * \sa SDL_HapticPeriodic
+ */
+#define SDL_HAPTIC_SAWTOOTHDOWN (1<<5)
+
+/**
+ * \brief Ramp effect supported.
+ *
+ * Ramp haptic effect.
+ *
+ * \sa SDL_HapticRamp
+ */
+#define SDL_HAPTIC_RAMP (1<<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 (1<<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 (1<<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 (1<<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 (1<<10)
+
+/**
+ * \brief Custom effect is supported.
+ *
+ * User defined custom haptic effect.
+ */
+#define SDL_HAPTIC_CUSTOM (1<<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 (1<<12)
+
+/**
+ * \brief Device can set autocenter.
+ *
+ * Device supports setting autocenter.
+ *
+ * \sa SDL_HapticSetAutocenter
+ */
+#define SDL_HAPTIC_AUTOCENTER (1<<13)
+
+/**
+ * \brief Device can be queried for effect status.
+ *
+ * Device can be queried for effect status.
+ *
+ * \sa SDL_HapticGetEffectStatus
+ */
+#define SDL_HAPTIC_STATUS (1<<14)
+
+/**
+ * \brief Device can be paused.
+ *
+ * \sa SDL_HapticPause
+ * \sa SDL_HapticUnpause
+ */
+#define SDL_HAPTIC_PAUSE (1<<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.
+ *
+ * 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.
+ *
+ * The struct is exclusive to 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 cycle 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. */
+ Sint16 offset; /**< Mean value of the wave. */
+ Uint16 phase; /**< Horizontal shift given by hundredth of a cycle. */
+
+ /* 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. */
+ Uint16 left_sat[3]; /**< Level when joystick is to the negative side. */
+ 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. */
+ 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.
+ *
+ * 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 usage.
+ *
+ * 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 1 if the joystick is haptic, 0 if it isn't
+ * or -1 if an error ocurred.
+ *
+ * \sa SDL_HapticOpenFromJoystick
+ */
+extern DECLSPEC int SDLCALL SDL_JoystickIsHaptic(SDL_Joystick * joystick);
+
+/**
+ * \brief Opens a Haptic device for usage from a Joystick device.
+ *
+ * You must still close the haptic device seperately. 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 devices supported features in bitwise matter.
+ *
+ * Example:
+ * \code
+ * if (SDL_HapticQuery(haptic) & SDL_HAPTIC_CONSTANT) {
+ * printf("We have constant haptic effect!");
+ * }
+ * \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 id 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 behaviour 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 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 pause.
+ * \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: */
projects / xonotic / xonotic.git / blobdiff