Mercurial > sdl-ios-xcode
annotate test/testjoystick.c @ 2763:6fc50bdd88c0
Some cleanups on the new XInput code.
One or two things got moved around, but largely this is hooked up correctly
in the Unix configure system now: it can be dynamically loaded and fallback
gracefully if not available, or libXi can be directly linked to libSDL.
XInput support can be --disable'd from the configure script, too (defaults to
enabled).
Please note that while the framework is in place to gracefully fallback, the
current state of the source requires XInput. We'll need to adjust a few
things still to correct this.
author | Ryan C. Gordon <icculus@icculus.org> |
---|---|
date | Wed, 17 Sep 2008 08:20:57 +0000 |
parents | 6280c111ee80 |
children | 450a9bf50c37 f55c87ae336b |
rev | line source |
---|---|
0 | 1 |
2 /* Simple program to test the SDL joystick routines */ | |
3 | |
4 #include <stdio.h> | |
5 #include <stdlib.h> | |
6 #include <string.h> | |
7 | |
8 #include "SDL.h" | |
9 | |
10 #define SCREEN_WIDTH 640 | |
11 #define SCREEN_HEIGHT 480 | |
12 | |
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13 void |
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14 WatchJoystick(SDL_Joystick * joystick) |
0 | 15 { |
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16 SDL_Surface *screen; |
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17 const char *name; |
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18 int i, done; |
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19 SDL_Event event; |
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20 int x, y, draw; |
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21 SDL_Rect axis_area[6][2]; |
0 | 22 |
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23 /* Set a video mode to display joystick axis position */ |
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24 screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); |
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25 if (screen == NULL) { |
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26 fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError()); |
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27 return; |
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28 } |
0 | 29 |
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30 /* Print info about the joystick we are watching */ |
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31 name = SDL_JoystickName(SDL_JoystickIndex(joystick)); |
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32 printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), |
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33 name ? name : "Unknown Joystick"); |
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34 printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", |
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35 SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), |
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36 SDL_JoystickNumBalls(joystick), SDL_JoystickNumButtons(joystick)); |
0 | 37 |
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38 /* Initialize drawing rectangles */ |
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39 memset(axis_area, 0, (sizeof axis_area)); |
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40 draw = 0; |
0 | 41 |
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42 /* Loop, getting joystick events! */ |
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43 done = 0; |
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44 while (!done) { |
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45 while (SDL_PollEvent(&event)) { |
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46 switch (event.type) { |
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47 case SDL_JOYAXISMOTION: |
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48 printf("Joystick %d axis %d value: %d\n", |
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49 event.jaxis.which, |
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50 event.jaxis.axis, event.jaxis.value); |
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51 break; |
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52 case SDL_JOYHATMOTION: |
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53 printf("Joystick %d hat %d value:", |
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54 event.jhat.which, event.jhat.hat); |
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55 if (event.jhat.value == SDL_HAT_CENTERED) |
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56 printf(" centered"); |
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57 if (event.jhat.value & SDL_HAT_UP) |
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58 printf(" up"); |
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59 if (event.jhat.value & SDL_HAT_RIGHT) |
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60 printf(" right"); |
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61 if (event.jhat.value & SDL_HAT_DOWN) |
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62 printf(" down"); |
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63 if (event.jhat.value & SDL_HAT_LEFT) |
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64 printf(" left"); |
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65 printf("\n"); |
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66 break; |
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67 case SDL_JOYBALLMOTION: |
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68 printf("Joystick %d ball %d delta: (%d,%d)\n", |
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69 event.jball.which, |
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70 event.jball.ball, event.jball.xrel, event.jball.yrel); |
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71 break; |
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72 case SDL_JOYBUTTONDOWN: |
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73 printf("Joystick %d button %d down\n", |
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74 event.jbutton.which, event.jbutton.button); |
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75 break; |
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76 case SDL_JOYBUTTONUP: |
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77 printf("Joystick %d button %d up\n", |
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78 event.jbutton.which, event.jbutton.button); |
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79 break; |
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80 case SDL_KEYDOWN: |
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81 if (event.key.keysym.sym != SDLK_ESCAPE) { |
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82 break; |
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83 } |
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84 /* Fall through to signal quit */ |
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85 case SDL_QUIT: |
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86 done = 1; |
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87 break; |
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88 default: |
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89 break; |
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90 } |
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91 } |
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92 /* Update visual joystick state */ |
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93 for (i = 0; i < SDL_JoystickNumButtons(joystick); ++i) { |
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94 SDL_Rect area; |
0 | 95 |
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96 area.x = i * 34; |
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97 area.y = SCREEN_HEIGHT - 34; |
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98 area.w = 32; |
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99 area.h = 32; |
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100 if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { |
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101 SDL_FillRect(screen, &area, 0xFFFF); |
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102 } else { |
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103 SDL_FillRect(screen, &area, 0x0000); |
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104 } |
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105 SDL_UpdateRects(screen, 1, &area); |
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106 } |
0 | 107 |
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108 for (i = 0; |
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109 i < SDL_JoystickNumAxes(joystick) / 2 |
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110 && i < SDL_arraysize(axis_area); ++i) { |
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111 /* Erase previous axes */ |
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112 SDL_FillRect(screen, &axis_area[i][draw], 0x0000); |
0 | 113 |
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114 /* Draw the X/Y axis */ |
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115 draw = !draw; |
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116 x = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 0)) + 32768); |
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117 x *= SCREEN_WIDTH; |
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118 x /= 65535; |
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119 if (x < 0) { |
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120 x = 0; |
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121 } else if (x > (SCREEN_WIDTH - 16)) { |
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122 x = SCREEN_WIDTH - 16; |
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123 } |
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124 y = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 1)) + 32768); |
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125 y *= SCREEN_HEIGHT; |
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126 y /= 65535; |
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127 if (y < 0) { |
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128 y = 0; |
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129 } else if (y > (SCREEN_HEIGHT - 16)) { |
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130 y = SCREEN_HEIGHT - 16; |
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131 } |
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132 axis_area[i][draw].x = (Sint16) x; |
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133 axis_area[i][draw].y = (Sint16) y; |
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134 axis_area[i][draw].w = 16; |
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135 axis_area[i][draw].h = 16; |
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136 SDL_FillRect(screen, &axis_area[i][draw], 0xFFFF); |
1854 | 137 |
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138 SDL_UpdateRects(screen, 2, axis_area[i]); |
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139 } |
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140 } |
0 | 141 } |
142 | |
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143 int |
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144 main(int argc, char *argv[]) |
0 | 145 { |
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146 const char *name; |
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147 int i; |
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148 SDL_Joystick *joystick; |
0 | 149 |
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150 /* Initialize SDL (Note: video is required to start event loop) */ |
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151 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) { |
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152 fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); |
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153 exit(1); |
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154 } |
0 | 155 |
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156 /* Print information about the joysticks */ |
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157 printf("There are %d joysticks attached\n", SDL_NumJoysticks()); |
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158 for (i = 0; i < SDL_NumJoysticks(); ++i) { |
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159 name = SDL_JoystickName(i); |
2201 | 160 printf("Joystick %d: %s\n", i, name ? name : "Unknown Joystick"); |
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161 joystick = SDL_JoystickOpen(i); |
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162 if (joystick == NULL) { |
2201 | 163 fprintf(stderr, "SDL_JoystickOpen(%d) failed: %s\n", i, |
164 SDL_GetError()); | |
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165 } else { |
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166 printf(" axes: %d\n", SDL_JoystickNumAxes(joystick)); |
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167 printf(" balls: %d\n", SDL_JoystickNumBalls(joystick)); |
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168 printf(" hats: %d\n", SDL_JoystickNumHats(joystick)); |
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169 printf(" buttons: %d\n", SDL_JoystickNumButtons(joystick)); |
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170 SDL_JoystickClose(joystick); |
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171 } |
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172 } |
0 | 173 |
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174 if (argv[1]) { |
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175 joystick = SDL_JoystickOpen(atoi(argv[1])); |
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176 if (joystick == NULL) { |
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177 printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), |
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178 SDL_GetError()); |
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179 } else { |
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180 WatchJoystick(joystick); |
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181 SDL_JoystickClose(joystick); |
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182 } |
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183 } |
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184 SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK); |
0 | 185 |
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186 return (0); |
0 | 187 } |