1 /*
2 Copyright (C) 1997-2020 Sam Lantinga <slouken@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 static SDL_Haptic *haptic;
37
38
39 /**
40 * @brief The entry point of this force feedback demo.
41 * @param[in] argc Number of arguments.
42 * @param[in] argv Array of argc arguments.
43 */
44 int
main(int argc,char ** argv)45 main(int argc, char **argv)
46 {
47 int i;
48 char *name;
49 int index;
50
51 /* Enable standard application logging */
52 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
53
54 name = NULL;
55 index = -1;
56 if (argc > 1) {
57 size_t l;
58 name = argv[1];
59 if ((strcmp(name, "--help") == 0) || (strcmp(name, "-h") == 0)) {
60 SDL_Log("USAGE: %s [device]\n"
61 "If device is a two-digit number it'll use it as an index, otherwise\n"
62 "it'll use it as if it were part of the device's name.\n",
63 argv[0]);
64 return 0;
65 }
66
67 l = SDL_strlen(name);
68 if ((l < 3) && SDL_isdigit(name[0]) && ((l == 1) || SDL_isdigit(name[1]))) {
69 index = SDL_atoi(name);
70 name = NULL;
71 }
72 }
73
74 /* Initialize the force feedbackness */
75 SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_JOYSTICK |
76 SDL_INIT_HAPTIC);
77 SDL_Log("%d Haptic devices detected.\n", SDL_NumHaptics());
78 if (SDL_NumHaptics() > 0) {
79 /* We'll just use index or the first force feedback device found */
80 if (name == NULL) {
81 i = (index != -1) ? index : 0;
82 }
83 /* Try to find matching device */
84 else {
85 for (i = 0; i < SDL_NumHaptics(); i++) {
86 if (strstr(SDL_HapticName(i), name) != NULL)
87 break;
88 }
89
90 if (i >= SDL_NumHaptics()) {
91 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to find device matching '%s', aborting.\n",
92 name);
93 return 1;
94 }
95 }
96
97 haptic = SDL_HapticOpen(i);
98 if (haptic == NULL) {
99 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Unable to create the haptic device: %s\n",
100 SDL_GetError());
101 return 1;
102 }
103 SDL_Log("Device: %s\n", SDL_HapticName(i));
104 } else {
105 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "No Haptic devices found!\n");
106 return 1;
107 }
108
109 /* We only want force feedback errors. */
110 SDL_ClearError();
111
112 if (SDL_HapticRumbleSupported(haptic) == SDL_FALSE) {
113 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Rumble not supported!\n");
114 return 1;
115 }
116 if (SDL_HapticRumbleInit(haptic) != 0) {
117 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to initialize rumble: %s\n", SDL_GetError());
118 return 1;
119 }
120 SDL_Log("Playing 2 second rumble at 0.5 magnitude.\n");
121 if (SDL_HapticRumblePlay(haptic, 0.5, 5000) != 0) {
122 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() );
123 return 1;
124 }
125 SDL_Delay(2000);
126 SDL_Log("Stopping rumble.\n");
127 SDL_HapticRumbleStop(haptic);
128 SDL_Delay(2000);
129 SDL_Log("Playing 2 second rumble at 0.3 magnitude.\n");
130 if (SDL_HapticRumblePlay(haptic, 0.3f, 5000) != 0) {
131 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to play rumble: %s\n", SDL_GetError() );
132 return 1;
133 }
134 SDL_Delay(2000);
135
136 /* Quit */
137 if (haptic != NULL)
138 SDL_HapticClose(haptic);
139 SDL_Quit();
140
141 return 0;
142 }
143
144 #else
145
146 int
main(int argc,char * argv[])147 main(int argc, char *argv[])
148 {
149 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Haptic support.\n");
150 return 1;
151 }
152
153 #endif
154