Atlas - testhotplug.c
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[FILE BEGIN]
1/*
2  Copyright (C) 1997-2018 Sam Lantinga <[email protected]>
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
[FILE END]
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