Mercurial > sdl-ios-xcode
annotate test/testjoystick.c @ 4271:c57d816eb9c5 SDL-1.2
Updated version for mingw32 build
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 02 Oct 2009 11:12:04 +0000 |
parents | 0dd0ca51d941 |
children |
rev | line source |
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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 | |
13 void WatchJoystick(SDL_Joystick *joystick) | |
14 { | |
15 SDL_Surface *screen; | |
16 const char *name; | |
17 int i, done; | |
18 SDL_Event event; | |
19 int x, y, draw; | |
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20 SDL_Rect axis_area[2]; |
0 | 21 |
22 /* Set a video mode to display joystick axis position */ | |
23 screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); | |
24 if ( screen == NULL ) { | |
25 fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError()); | |
26 return; | |
27 } | |
28 | |
29 /* Print info about the joystick we are watching */ | |
30 name = SDL_JoystickName(SDL_JoystickIndex(joystick)); | |
31 printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), | |
32 name ? name : "Unknown Joystick"); | |
33 printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", | |
34 SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), | |
35 SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick)); | |
36 | |
37 /* Initialize drawing rectangles */ | |
38 memset(axis_area, 0, (sizeof axis_area)); | |
39 draw = 0; | |
40 | |
41 /* Loop, getting joystick events! */ | |
42 done = 0; | |
43 while ( ! done ) { | |
44 while ( SDL_PollEvent(&event) ) { | |
45 switch (event.type) { | |
46 case SDL_JOYAXISMOTION: | |
47 printf("Joystick %d axis %d value: %d\n", | |
48 event.jaxis.which, | |
49 event.jaxis.axis, | |
50 event.jaxis.value); | |
51 break; | |
52 case SDL_JOYHATMOTION: | |
53 printf("Joystick %d hat %d value:", | |
54 event.jhat.which, | |
55 event.jhat.hat); | |
56 if ( event.jhat.value == SDL_HAT_CENTERED ) | |
57 printf(" centered"); | |
58 if ( event.jhat.value & SDL_HAT_UP ) | |
59 printf(" up"); | |
60 if ( event.jhat.value & SDL_HAT_RIGHT ) | |
61 printf(" right"); | |
62 if ( event.jhat.value & SDL_HAT_DOWN ) | |
63 printf(" down"); | |
64 if ( event.jhat.value & SDL_HAT_LEFT ) | |
65 printf(" left"); | |
66 printf("\n"); | |
67 break; | |
68 case SDL_JOYBALLMOTION: | |
69 printf("Joystick %d ball %d delta: (%d,%d)\n", | |
70 event.jball.which, | |
71 event.jball.ball, | |
72 event.jball.xrel, | |
73 event.jball.yrel); | |
74 break; | |
75 case SDL_JOYBUTTONDOWN: | |
76 printf("Joystick %d button %d down\n", | |
77 event.jbutton.which, | |
78 event.jbutton.button); | |
79 break; | |
80 case SDL_JOYBUTTONUP: | |
81 printf("Joystick %d button %d up\n", | |
82 event.jbutton.which, | |
83 event.jbutton.button); | |
84 break; | |
85 case SDL_KEYDOWN: | |
86 if ( event.key.keysym.sym != SDLK_ESCAPE ) { | |
87 break; | |
88 } | |
89 /* Fall through to signal quit */ | |
90 case SDL_QUIT: | |
91 done = 1; | |
92 break; | |
93 default: | |
94 break; | |
95 } | |
96 } | |
97 /* Update visual joystick state */ | |
98 for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) { | |
99 SDL_Rect area; | |
100 | |
101 area.x = i*34; | |
102 area.y = SCREEN_HEIGHT-34; | |
103 area.w = 32; | |
104 area.h = 32; | |
105 if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { | |
106 SDL_FillRect(screen, &area, 0xFFFF); | |
107 } else { | |
108 SDL_FillRect(screen, &area, 0x0000); | |
109 } | |
110 SDL_UpdateRects(screen, 1, &area); | |
111 } | |
112 | |
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113 /* Erase previous axes */ |
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114 SDL_FillRect(screen, &axis_area[draw], 0x0000); |
0 | 115 |
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116 /* Draw the X/Y axis */ |
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117 draw = !draw; |
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118 x = (((int)SDL_JoystickGetAxis(joystick, 0))+32768); |
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119 x *= SCREEN_WIDTH; |
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120 x /= 65535; |
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121 if ( x < 0 ) { |
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122 x = 0; |
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123 } else |
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124 if ( x > (SCREEN_WIDTH-16) ) { |
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125 x = SCREEN_WIDTH-16; |
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126 } |
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127 y = (((int)SDL_JoystickGetAxis(joystick, 1))+32768); |
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128 y *= SCREEN_HEIGHT; |
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129 y /= 65535; |
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130 if ( y < 0 ) { |
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131 y = 0; |
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132 } else |
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133 if ( y > (SCREEN_HEIGHT-16) ) { |
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134 y = SCREEN_HEIGHT-16; |
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135 } |
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136 axis_area[draw].x = (Sint16)x; |
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137 axis_area[draw].y = (Sint16)y; |
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138 axis_area[draw].w = 16; |
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139 axis_area[draw].h = 16; |
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140 SDL_FillRect(screen, &axis_area[draw], 0xFFFF); |
1854 | 141 |
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142 SDL_UpdateRects(screen, 2, axis_area); |
0 | 143 } |
144 } | |
145 | |
146 int main(int argc, char *argv[]) | |
147 { | |
148 const char *name; | |
149 int i; | |
150 SDL_Joystick *joystick; | |
151 | |
152 /* Initialize SDL (Note: video is required to start event loop) */ | |
153 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { | |
154 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
155 exit(1); | |
156 } | |
157 | |
158 /* Print information about the joysticks */ | |
159 printf("There are %d joysticks attached\n", SDL_NumJoysticks()); | |
160 for ( i=0; i<SDL_NumJoysticks(); ++i ) { | |
161 name = SDL_JoystickName(i); | |
162 printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick"); | |
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163 joystick = SDL_JoystickOpen(i); |
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164 if (joystick == NULL) { |
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165 fprintf(stderr, "SDL_JoystickOpen(%d) failed: %s\n", i, SDL_GetError()); |
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166 } else { |
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167 printf(" axes: %d\n", SDL_JoystickNumAxes(joystick)); |
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168 printf(" balls: %d\n", SDL_JoystickNumBalls(joystick)); |
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169 printf(" hats: %d\n", SDL_JoystickNumHats(joystick)); |
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170 printf(" buttons: %d\n", SDL_JoystickNumButtons(joystick)); |
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parents:
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171 SDL_JoystickClose(joystick); |
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172 } |
0 | 173 } |
174 | |
175 if ( argv[1] ) { | |
176 joystick = SDL_JoystickOpen(atoi(argv[1])); | |
177 if ( joystick == NULL ) { | |
178 printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), | |
179 SDL_GetError()); | |
180 } else { | |
181 WatchJoystick(joystick); | |
182 SDL_JoystickClose(joystick); | |
183 } | |
184 } | |
185 SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK); | |
186 | |
187 return(0); | |
188 } |