1/*
2 Copyright (C) 1997-2021 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/* Simple program to test the SDL joystick hotplugging */
14
15#include <stdio.h>
16#include <stdlib.h>
17#include <string.h>
18
19#include "SDL.h"
20
21#if !defined SDL_JOYSTICK_DISABLED && !defined SDL_HAPTIC_DISABLED
22
23int
24main(int argc, char *argv[])
25{
26 SDL_Joystick *joystick = NULL;
27 SDL_Haptic *haptic = NULL;
28 SDL_JoystickID instance = -1;
29 SDL_bool keepGoing = SDL_TRUE;
30 int i;
31 SDL_bool enable_haptic = SDL_TRUE;
32 Uint32 init_subsystems = SDL_INIT_VIDEO | SDL_INIT_JOYSTICK;
33
34 for (i = 1; i < argc; ++i) {
35 if (SDL_strcasecmp(argv[i], "--nohaptic") == 0) {
36 enable_haptic = SDL_FALSE;
37 }
38 }
39
40 if(enable_haptic) {
41 init_subsystems |= SDL_INIT_HAPTIC;
42 }
43
44 /* Enable standard application logging */
45 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
46
47 SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
48
49 /* Initialize SDL (Note: video is required to start event loop) */
50 if (SDL_Init(init_subsystems) < 0) {
51 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
52 exit(1);
53 }
54
55 /*
56 //SDL_CreateWindow("Dummy", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 128, 128, 0);
57 */
58
59 SDL_Log("There are %d joysticks at startup\n", SDL_NumJoysticks());
60 if (enable_haptic)
61 SDL_Log("There are %d haptic devices at startup\n", SDL_NumHaptics());
62
63 while(keepGoing)
64 {
65 SDL_Event event;
66 while(SDL_PollEvent(&event))
67 {
68 switch(event.type)
69 {
70 case SDL_QUIT:
71 keepGoing = SDL_FALSE;
72 break;
73 case SDL_JOYDEVICEADDED:
74 if (joystick != NULL)
75 {
76 SDL_Log("Only one joystick supported by this test\n");
77 }
78 else
79 {
80 joystick = SDL_JoystickOpen(event.jdevice.which);
81 instance = SDL_JoystickInstanceID(joystick);
82 SDL_Log("Joy Added : %d : %s\n", event.jdevice.which, SDL_JoystickName(joystick));
83 if (enable_haptic)
84 {
85 if (SDL_JoystickIsHaptic(joystick))
86 {
87 haptic = SDL_HapticOpenFromJoystick(joystick);
88 if (haptic)
89 {
90 SDL_Log("Joy Haptic Opened\n");
91 if (SDL_HapticRumbleInit( haptic ) != 0)
92 {
93 SDL_Log("Could not init Rumble!: %s\n", SDL_GetError());
94 SDL_HapticClose(haptic);
95 haptic = NULL;
96 }
97 } else {
98 SDL_Log("Joy haptic open FAILED!: %s\n", SDL_GetError());
99 }
100 }
101 else
102 {
103 SDL_Log("No haptic found\n");
104 }
105 }
106 }
107 break;
108 case SDL_JOYDEVICEREMOVED:
109 if (instance == event.jdevice.which)
110 {
111 SDL_Log("Joy Removed: %d\n", event.jdevice.which);
112 instance = -1;
113 if(enable_haptic && haptic)
114 {
115 SDL_HapticClose(haptic);
116 haptic = NULL;
117 }
118 SDL_JoystickClose(joystick);
119 joystick = NULL;
120 } else {
121 SDL_Log("Unknown joystick diconnected\n");
122 }
123 break;
124 case SDL_JOYAXISMOTION:
125/*
126// SDL_Log("Axis Move: %d\n", event.jaxis.axis);
127*/
128 if (enable_haptic)
129 SDL_HapticRumblePlay(haptic, 0.25, 250);
130 break;
131 case SDL_JOYBUTTONDOWN:
132 SDL_Log("Button Press: %d\n", event.jbutton.button);
133 if(enable_haptic && haptic)
134 {
135 SDL_HapticRumblePlay(haptic, 0.25, 250);
136 }
137 if (event.jbutton.button == 0) {
138 SDL_Log("Exiting due to button press of button 0\n");
139 keepGoing = SDL_FALSE;
140 }
141 break;
142 case SDL_JOYBUTTONUP:
143 SDL_Log("Button Release: %d\n", event.jbutton.button);
144 break;
145 }
146 }
147 }
148
149 SDL_Quit();
150
151 return 0;
152}
153#else
154
155int
156main(int argc, char *argv[])
157{
158 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Joystick and haptic support.\n");
159 return 1;
160}
161
162#endif
163