(This is the documentation for SDL3, which is under heavy development and the API is changing! SDL2 is the current stable version!)

SDL_HapticRamp

A structure containing a template for a Ramp effect.

Header File

Defined in <SDL3/SDL_haptic.h>

Syntax

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;

Remarks

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.

Version

This struct is available since SDL 3.0.0.

See Also

• SDL_HAPTIC_RAMP
• SDL_HapticEffect

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CategoryAPI, CategoryAPIStruct

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