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comparison test/testjoystick.c @ 1662:782fd950bd46 SDL-1.3

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Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API. WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid. The code is now run through a consistent indent format: indent -i4 -nut -nsc -br -ce The headers are being converted to automatically generate doxygen documentation.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 28 May 2006 13:04:16 +0000
parents 281d3f4870e5
children 4da1ee79c9af
comparison
equal deleted inserted replaced
1661:281d3f4870e5 1662:782fd950bd46
8 #include "SDL.h" 8 #include "SDL.h"
9 9
10 #define SCREEN_WIDTH 640 10 #define SCREEN_WIDTH 640
11 #define SCREEN_HEIGHT 480 11 #define SCREEN_HEIGHT 480
12 12
13 void WatchJoystick(SDL_Joystick *joystick) 13 void
14 WatchJoystick (SDL_Joystick * joystick)
14 { 15 {
15 SDL_Surface *screen; 16 SDL_Surface *screen;
16 const char *name; 17 const char *name;
17 int i, done; 18 int i, done;
18 SDL_Event event; 19 SDL_Event event;
19 int x, y, draw; 20 int x, y, draw;
20 SDL_Rect axis_area[6][2]; 21 SDL_Rect axis_area[6][2];
21 22
22 /* Set a video mode to display joystick axis position */ 23 /* Set a video mode to display joystick axis position */
23 screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); 24 screen = SDL_SetVideoMode (SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0);
24 if ( screen == NULL ) { 25 if (screen == NULL) {
25 fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError()); 26 fprintf (stderr, "Couldn't set video mode: %s\n", SDL_GetError ());
26 return; 27 return;
27 } 28 }
28 29
29 /* Print info about the joystick we are watching */ 30 /* Print info about the joystick we are watching */
30 name = SDL_JoystickName(SDL_JoystickIndex(joystick)); 31 name = SDL_JoystickName (SDL_JoystickIndex (joystick));
31 printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), 32 printf ("Watching joystick %d: (%s)\n", SDL_JoystickIndex (joystick),
32 name ? name : "Unknown Joystick"); 33 name ? name : "Unknown Joystick");
33 printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", 34 printf ("Joystick has %d axes, %d hats, %d balls, and %d buttons\n",
34 SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), 35 SDL_JoystickNumAxes (joystick), SDL_JoystickNumHats (joystick),
35 SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick)); 36 SDL_JoystickNumBalls (joystick),
37 SDL_JoystickNumButtons (joystick));
36 38
37 /* Initialize drawing rectangles */ 39 /* Initialize drawing rectangles */
38 memset(axis_area, 0, (sizeof axis_area)); 40 memset (axis_area, 0, (sizeof axis_area));
39 draw = 0; 41 draw = 0;
40 42
41 /* Loop, getting joystick events! */ 43 /* Loop, getting joystick events! */
42 done = 0; 44 done = 0;
43 while ( ! done ) { 45 while (!done) {
44 while ( SDL_PollEvent(&event) ) { 46 while (SDL_PollEvent (&event)) {
45 switch (event.type) { 47 switch (event.type) {
46 case SDL_JOYAXISMOTION: 48 case SDL_JOYAXISMOTION:
47 printf("Joystick %d axis %d value: %d\n", 49 printf ("Joystick %d axis %d value: %d\n",
48 event.jaxis.which, 50 event.jaxis.which,
49 event.jaxis.axis, 51 event.jaxis.axis, event.jaxis.value);
50 event.jaxis.value); 52 break;
51 break; 53 case SDL_JOYHATMOTION:
52 case SDL_JOYHATMOTION: 54 printf ("Joystick %d hat %d value:",
53 printf("Joystick %d hat %d value:", 55 event.jhat.which, event.jhat.hat);
54 event.jhat.which, 56 if (event.jhat.value == SDL_HAT_CENTERED)
55 event.jhat.hat); 57 printf (" centered");
56 if ( event.jhat.value == SDL_HAT_CENTERED ) 58 if (event.jhat.value & SDL_HAT_UP)
57 printf(" centered"); 59 printf (" up");
58 if ( event.jhat.value & SDL_HAT_UP ) 60 if (event.jhat.value & SDL_HAT_RIGHT)
59 printf(" up"); 61 printf (" right");
60 if ( event.jhat.value & SDL_HAT_RIGHT ) 62 if (event.jhat.value & SDL_HAT_DOWN)
61 printf(" right"); 63 printf (" down");
62 if ( event.jhat.value & SDL_HAT_DOWN ) 64 if (event.jhat.value & SDL_HAT_LEFT)
63 printf(" down"); 65 printf (" left");
64 if ( event.jhat.value & SDL_HAT_LEFT ) 66 printf ("\n");
65 printf(" left"); 67 break;
66 printf("\n"); 68 case SDL_JOYBALLMOTION:
67 break; 69 printf ("Joystick %d ball %d delta: (%d,%d)\n",
68 case SDL_JOYBALLMOTION: 70 event.jball.which,
69 printf("Joystick %d ball %d delta: (%d,%d)\n", 71 event.jball.ball, event.jball.xrel, event.jball.yrel);
70 event.jball.which, 72 break;
71 event.jball.ball, 73 case SDL_JOYBUTTONDOWN:
72 event.jball.xrel, 74 printf ("Joystick %d button %d down\n",
73 event.jball.yrel); 75 event.jbutton.which, event.jbutton.button);
74 break; 76 break;
75 case SDL_JOYBUTTONDOWN: 77 case SDL_JOYBUTTONUP:
76 printf("Joystick %d button %d down\n", 78 printf ("Joystick %d button %d up\n",
77 event.jbutton.which, 79 event.jbutton.which, event.jbutton.button);
78 event.jbutton.button); 80 break;
79 break; 81 case SDL_KEYDOWN:
80 case SDL_JOYBUTTONUP: 82 if (event.key.keysym.sym != SDLK_ESCAPE) {
81 printf("Joystick %d button %d up\n", 83 break;
82 event.jbutton.which, 84 }
83 event.jbutton.button); 85 /* Fall through to signal quit */
84 break; 86 case SDL_QUIT:
85 case SDL_KEYDOWN: 87 done = 1;
86 if ( event.key.keysym.sym != SDLK_ESCAPE ) { 88 break;
87 break; 89 default:
88 } 90 break;
89 /* Fall through to signal quit */ 91 }
90 case SDL_QUIT: 92 }
91 done = 1; 93 /* Update visual joystick state */
92 break; 94 for (i = 0; i < SDL_JoystickNumButtons (joystick); ++i) {
93 default: 95 SDL_Rect area;
94 break;
95 }
96 }
97 /* Update visual joystick state */
98 for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) {
99 SDL_Rect area;
100 96
101 area.x = i*34; 97 area.x = i * 34;
102 area.y = SCREEN_HEIGHT-34; 98 area.y = SCREEN_HEIGHT - 34;
103 area.w = 32; 99 area.w = 32;
104 area.h = 32; 100 area.h = 32;
105 if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { 101 if (SDL_JoystickGetButton (joystick, i) == SDL_PRESSED) {
106 SDL_FillRect(screen, &area, 0xFFFF); 102 SDL_FillRect (screen, &area, 0xFFFF);
107 } else { 103 } else {
108 SDL_FillRect(screen, &area, 0x0000); 104 SDL_FillRect (screen, &area, 0x0000);
109 } 105 }
110 SDL_UpdateRects(screen, 1, &area); 106 SDL_UpdateRects (screen, 1, &area);
111 } 107 }
112 108
113 for ( i=0; i<SDL_JoystickNumAxes(joystick)/2 && i < SDL_arraysize(axis_area); ++i ) { 109 for (i = 0;
114 /* Erase previous axes */ 110 i < SDL_JoystickNumAxes (joystick) / 2
115 SDL_FillRect(screen, &axis_area[i][draw], 0x0000); 111 && i < SDL_arraysize (axis_area); ++i) {
112 /* Erase previous axes */
113 SDL_FillRect (screen, &axis_area[i][draw], 0x0000);
116 114
117 /* Draw the X/Y axis */ 115 /* Draw the X/Y axis */
118 draw = !draw; 116 draw = !draw;
119 x = (((int)SDL_JoystickGetAxis(joystick, i*2+0))+32768); 117 x = (((int) SDL_JoystickGetAxis (joystick, i * 2 + 0)) + 32768);
120 x *= SCREEN_WIDTH; 118 x *= SCREEN_WIDTH;
121 x /= 65535; 119 x /= 65535;
122 if ( x < 0 ) { 120 if (x < 0) {
123 x = 0; 121 x = 0;
124 } else 122 } else if (x > (SCREEN_WIDTH - 16)) {
125 if ( x > (SCREEN_WIDTH-16) ) { 123 x = SCREEN_WIDTH - 16;
126 x = SCREEN_WIDTH-16; 124 }
127 } 125 y = (((int) SDL_JoystickGetAxis (joystick, i * 2 + 1)) + 32768);
128 y = (((int)SDL_JoystickGetAxis(joystick, i*2+1))+32768); 126 y *= SCREEN_HEIGHT;
129 y *= SCREEN_HEIGHT; 127 y /= 65535;
130 y /= 65535; 128 if (y < 0) {
131 if ( y < 0 ) { 129 y = 0;
132 y = 0; 130 } else if (y > (SCREEN_HEIGHT - 16)) {
133 } else 131 y = SCREEN_HEIGHT - 16;
134 if ( y > (SCREEN_HEIGHT-16) ) { 132 }
135 y = SCREEN_HEIGHT-16; 133 axis_area[i][draw].x = (Sint16) x;
136 } 134 axis_area[i][draw].y = (Sint16) y;
137 axis_area[i][draw].x = (Sint16)x; 135 axis_area[i][draw].w = 16;
138 axis_area[i][draw].y = (Sint16)y; 136 axis_area[i][draw].h = 16;
139 axis_area[i][draw].w = 16; 137 SDL_FillRect (screen, &axis_area[i][draw], 0xFFFF);
140 axis_area[i][draw].h = 16;
141 SDL_FillRect(screen, &axis_area[i][draw], 0xFFFF);
142 138
143 SDL_UpdateRects(screen, 2, axis_area[i]); 139 SDL_UpdateRects (screen, 2, axis_area[i]);
144 } 140 }
145 } 141 }
146 } 142 }
147 143
148 int main(int argc, char *argv[]) 144 int
145 main (int argc, char *argv[])
149 { 146 {
150 const char *name; 147 const char *name;
151 int i; 148 int i;
152 SDL_Joystick *joystick; 149 SDL_Joystick *joystick;
153 150
154 /* Initialize SDL (Note: video is required to start event loop) */ 151 /* Initialize SDL (Note: video is required to start event loop) */
155 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { 152 if (SDL_Init (SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
156 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); 153 fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
157 exit(1); 154 exit (1);
158 } 155 }
159 156
160 /* Print information about the joysticks */ 157 /* Print information about the joysticks */
161 printf("There are %d joysticks attached\n", SDL_NumJoysticks()); 158 printf ("There are %d joysticks attached\n", SDL_NumJoysticks ());
162 for ( i=0; i<SDL_NumJoysticks(); ++i ) { 159 for (i = 0; i < SDL_NumJoysticks (); ++i) {
163 name = SDL_JoystickName(i); 160 name = SDL_JoystickName (i);
164 printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick"); 161 printf ("Joystick %d: %s\n", i, name ? name : "Unknown Joystick");
165 } 162 }
166 163
167 if ( argv[1] ) { 164 if (argv[1]) {
168 joystick = SDL_JoystickOpen(atoi(argv[1])); 165 joystick = SDL_JoystickOpen (atoi (argv[1]));
169 if ( joystick == NULL ) { 166 if (joystick == NULL) {
170 printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), 167 printf ("Couldn't open joystick %d: %s\n", atoi (argv[1]),
171 SDL_GetError()); 168 SDL_GetError ());
172 } else { 169 } else {
173 WatchJoystick(joystick); 170 WatchJoystick (joystick);
174 SDL_JoystickClose(joystick); 171 SDL_JoystickClose (joystick);
175 } 172 }
176 } 173 }
177 SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK); 174 SDL_QuitSubSystem (SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);
178 175
179 return(0); 176 return (0);
180 } 177 }