testrumble.c File Reference

#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "SDL.h"

Include dependency graph for testrumble.c:

Go to the source code of this file.

Functions
int	main (int argc, char **argv)
	The entry point of this force feedback demo.

Variables
static SDL_Haptic *	haptic

Function Documentation

int main	(	int	argc,
		char **	argv
	)

The entry point of this force feedback demo.

Parameters

[in]	argc	Number of arguments.
[in]	argv	Array of argc arguments.

Definition at line 45 of file testrumble.c.

References haptic, i, NULL, SDL_atoi, SDL_ClearError, SDL_Delay, SDL_FALSE, SDL_GetError, SDL_HapticClose, SDL_HapticName, SDL_HapticOpen, SDL_HapticRumbleInit, SDL_HapticRumblePlay, SDL_HapticRumbleStop, SDL_HapticRumbleSupported, SDL_Init, SDL_INIT_HAPTIC, SDL_INIT_JOYSTICK, SDL_INIT_TIMER, SDL_INIT_VIDEO, SDL_isdigit, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_NumHaptics, SDL_Quit, and SDL_strlen.

{
    int i;
    char *name;
    int index;

    /* Enable standard application logging */
    SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);

    name = NULL;
    index = -1;
    if (argc > 1) {
        size_t l;
        name = argv[1];
        if ((strcmp(name, "--help") == 0) || (strcmp(name, "-h") == 0)) {
            SDL_Log("USAGE: %s [device]\n"
                   "If device is a two-digit number it'll use it as an index, otherwise\n"
                   "it'll use it as if it were part of the device's name.\n",
                   argv[0]);
            return 0;
        }

        l = SDL_strlen(name);
        if ((l < 3) && SDL_isdigit(name[0]) && ((l == 1) || SDL_isdigit(name[1]))) {
            index = SDL_atoi(name);
            name = NULL;
        }
    }

    /* Initialize the force feedbackness */
    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK |
             SDL_INIT_HAPTIC);
    SDL_Log("%d Haptic devices detected.\n", SDL_NumHaptics());
    if (SDL_NumHaptics() > 0) {
        /* We'll just use index or the first force feedback device found */
        if (name == NULL) {
            i = (index != -1) ? index : 0;
        }
        /* Try to find matching device */
        else {
            for (i = 0; i < SDL_NumHaptics(); i++) {
                if (strstr(SDL_HapticName(i), name) != NULL)
                    break;
            }

            if (i >= SDL_NumHaptics()) {
                SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to find device matching '%s', aborting.\n",
                       name);
                return 1;
            }
        }

        haptic = SDL_HapticOpen(i);
        if (haptic == NULL) {
            SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to create the haptic device: %s\n",
                   SDL_GetError());
            return 1;
        }
        SDL_Log("Device: %s\n", SDL_HapticName(i));
    } else {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No Haptic devices found!\n");
        return 1;
    }

    /* We only want force feedback errors. */
    SDL_ClearError();

    if (SDL_HapticRumbleSupported(haptic) == SDL_FALSE) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Rumble not supported!\n");
        return 1;
    }
    if (SDL_HapticRumbleInit(haptic) != 0) {
        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to initialize rumble: %s\n", SDL_GetError());
        return 1;
    }
    SDL_Log("Playing 2 second rumble at 0.5 magnitude.\n");
    if (SDL_HapticRumblePlay(haptic, 0.5, 5000) != 0) {
       SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() );
       return 1;
    }
    SDL_Delay(2000);
    SDL_Log("Stopping rumble.\n");
    SDL_HapticRumbleStop(haptic);
    SDL_Delay(2000);
    SDL_Log("Playing 2 second rumble at 0.3 magnitude.\n");
    if (SDL_HapticRumblePlay(haptic, 0.3f, 5000) != 0) {
       SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() );
       return 1;
    }
    SDL_Delay(2000);

    /* Quit */
    if (haptic != NULL)
        SDL_HapticClose(haptic);
    SDL_Quit();

    return 0;
}

Variable Documentation

SDL_Haptic* haptic

static

Definition at line 36 of file testrumble.c.

Referenced by main().