1 /* 2 Copyright (C) 1997-2014 Sam Lantinga <slouken (at) libsdl.org> 3 4 This software is provided 'as-is', without any express or implied 5 warranty. In no event will the authors be held liable for any damages 6 arising from the use of this software. 7 8 Permission is granted to anyone to use this software for any purpose, 9 including commercial applications, and to alter it and redistribute it 10 freely. 11 */ 12 /* 13 Copyright (c) 2011, Edgar Simo Serra 14 All rights reserved. 15 16 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 17 18 * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 19 * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 20 * Neither the name of the Simple Directmedia Layer (SDL) nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. 21 22 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 /* 26 * includes 27 */ 28 #include <stdlib.h> 29 #include <string.h> /* strstr */ 30 #include <ctype.h> /* isdigit */ 31 32 #include "SDL.h" 33 34 #ifndef SDL_HAPTIC_DISABLED 35 36 #include "SDL_haptic.h" 37 38 static SDL_Haptic *haptic; 39 40 41 /** 42 * @brief The entry point of this force feedback demo. 43 * @param[in] argc Number of arguments. 44 * @param[in] argv Array of argc arguments. 45 */ 46 int 47 main(int argc, char **argv) 48 { 49 int i; 50 char *name; 51 int index; 52 53 /* Enable standard application logging */ 54 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO); 55 56 name = NULL; 57 index = -1; 58 if (argc > 1) { 59 name = argv[1]; 60 if ((strcmp(name, "--help") == 0) || (strcmp(name, "-h") == 0)) { 61 SDL_Log("USAGE: %s [device]\n" 62 "If device is a two-digit number it'll use it as an index, otherwise\n" 63 "it'll use it as if it were part of the device's name.\n", 64 argv[0]); 65 return 0; 66 } 67 68 i = strlen(name); 69 if ((i < 3) && isdigit(name[0]) && ((i == 1) || isdigit(name[1]))) { 70 index = atoi(name); 71 name = NULL; 72 } 73 } 74 75 /* Initialize the force feedbackness */ 76 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK | 77 SDL_INIT_HAPTIC); 78 SDL_Log("%d Haptic devices detected.\n", SDL_NumHaptics()); 79 if (SDL_NumHaptics() > 0) { 80 /* We'll just use index or the first force feedback device found */ 81 if (name == NULL) { 82 i = (index != -1) ? index : 0; 83 } 84 /* Try to find matching device */ 85 else { 86 for (i = 0; i < SDL_NumHaptics(); i++) { 87 if (strstr(SDL_HapticName(i), name) != NULL) 88 break; 89 } 90 91 if (i >= SDL_NumHaptics()) { 92 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to find device matching '%s', aborting.\n", 93 name); 94 return 1; 95 } 96 } 97 98 haptic = SDL_HapticOpen(i); 99 if (haptic == NULL) { 100 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to create the haptic device: %s\n", 101 SDL_GetError()); 102 return 1; 103 } 104 SDL_Log("Device: %s\n", SDL_HapticName(i)); 105 } else { 106 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No Haptic devices found!\n"); 107 return 1; 108 } 109 110 /* We only want force feedback errors. */ 111 SDL_ClearError(); 112 113 if (SDL_HapticRumbleSupported(haptic) == SDL_FALSE) { 114 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Rumble not supported!\n"); 115 return 1; 116 } 117 if (SDL_HapticRumbleInit(haptic) != 0) { 118 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to initialize rumble: %s\n", SDL_GetError()); 119 return 1; 120 } 121 SDL_Log("Playing 2 second rumble at 0.5 magnitude.\n"); 122 if (SDL_HapticRumblePlay(haptic, 0.5, 5000) != 0) { 123 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() ); 124 return 1; 125 } 126 SDL_Delay(2000); 127 SDL_Log("Stopping rumble.\n"); 128 SDL_HapticRumbleStop(haptic); 129 SDL_Delay(2000); 130 SDL_Log("Playing 2 second rumble at 0.3 magnitude.\n"); 131 if (SDL_HapticRumblePlay(haptic, 0.3f, 5000) != 0) { 132 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() ); 133 return 1; 134 } 135 SDL_Delay(2000); 136 137 /* Quit */ 138 if (haptic != NULL) 139 SDL_HapticClose(haptic); 140 SDL_Quit(); 141 142 return 0; 143 } 144 145 #else 146 147 int 148 main(int argc, char *argv[]) 149 { 150 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Haptic support.\n"); 151 exit(1); 152 } 153 154 #endif 155
