author | Sam Lantinga <slouken@libsdl.org> |
Sun, 21 May 2006 17:26:40 +0000 | |
changeset 1855 | 5ff2c01e475e |
parent 1854 | 2280e314a978 |
child 1895 | c121d94672cb |
child 4071 | 3d9040dcc47e |
permissions | -rw-r--r-- |
0 | 1 |
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/* Simple program to test the SDL joystick routines */ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "SDL.h" |
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#define SCREEN_WIDTH 640 |
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#define SCREEN_HEIGHT 480 |
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void WatchJoystick(SDL_Joystick *joystick) |
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{ |
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SDL_Surface *screen; |
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const char *name; |
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int i, done; |
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SDL_Event event; |
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int x, y, draw; |
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1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
20 |
SDL_Rect axis_area[2]; |
0 | 21 |
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/* Set a video mode to display joystick axis position */ |
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screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); |
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if ( screen == NULL ) { |
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fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError()); |
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return; |
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} |
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/* Print info about the joystick we are watching */ |
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name = SDL_JoystickName(SDL_JoystickIndex(joystick)); |
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printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), |
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name ? name : "Unknown Joystick"); |
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printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", |
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SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), |
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SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick)); |
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/* Initialize drawing rectangles */ |
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memset(axis_area, 0, (sizeof axis_area)); |
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draw = 0; |
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/* Loop, getting joystick events! */ |
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done = 0; |
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while ( ! done ) { |
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while ( SDL_PollEvent(&event) ) { |
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switch (event.type) { |
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case SDL_JOYAXISMOTION: |
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printf("Joystick %d axis %d value: %d\n", |
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event.jaxis.which, |
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event.jaxis.axis, |
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event.jaxis.value); |
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break; |
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case SDL_JOYHATMOTION: |
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printf("Joystick %d hat %d value:", |
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event.jhat.which, |
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event.jhat.hat); |
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if ( event.jhat.value == SDL_HAT_CENTERED ) |
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printf(" centered"); |
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if ( event.jhat.value & SDL_HAT_UP ) |
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printf(" up"); |
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if ( event.jhat.value & SDL_HAT_RIGHT ) |
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printf(" right"); |
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if ( event.jhat.value & SDL_HAT_DOWN ) |
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printf(" down"); |
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if ( event.jhat.value & SDL_HAT_LEFT ) |
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printf(" left"); |
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printf("\n"); |
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break; |
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case SDL_JOYBALLMOTION: |
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printf("Joystick %d ball %d delta: (%d,%d)\n", |
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event.jball.which, |
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event.jball.ball, |
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event.jball.xrel, |
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event.jball.yrel); |
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break; |
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case SDL_JOYBUTTONDOWN: |
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printf("Joystick %d button %d down\n", |
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event.jbutton.which, |
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event.jbutton.button); |
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break; |
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case SDL_JOYBUTTONUP: |
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printf("Joystick %d button %d up\n", |
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event.jbutton.which, |
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event.jbutton.button); |
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break; |
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case SDL_KEYDOWN: |
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if ( event.key.keysym.sym != SDLK_ESCAPE ) { |
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break; |
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} |
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/* Fall through to signal quit */ |
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case SDL_QUIT: |
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done = 1; |
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break; |
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default: |
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break; |
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} |
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} |
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/* Update visual joystick state */ |
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for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) { |
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SDL_Rect area; |
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area.x = i*34; |
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area.y = SCREEN_HEIGHT-34; |
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area.w = 32; |
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area.h = 32; |
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if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { |
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SDL_FillRect(screen, &area, 0xFFFF); |
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} else { |
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SDL_FillRect(screen, &area, 0x0000); |
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} |
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SDL_UpdateRects(screen, 1, &area); |
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} |
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1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
113 |
/* Erase previous axes */ |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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SDL_FillRect(screen, &axis_area[draw], 0x0000); |
0 | 115 |
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1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
116 |
/* Draw the X/Y axis */ |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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draw = !draw; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
118 |
x = (((int)SDL_JoystickGetAxis(joystick, 0))+32768); |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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x *= SCREEN_WIDTH; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
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x /= 65535; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
121 |
if ( x < 0 ) { |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
122 |
x = 0; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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} else |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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if ( x > (SCREEN_WIDTH-16) ) { |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
125 |
x = SCREEN_WIDTH-16; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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} |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
127 |
y = (((int)SDL_JoystickGetAxis(joystick, 1))+32768); |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
128 |
y *= SCREEN_HEIGHT; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
129 |
y /= 65535; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
130 |
if ( y < 0 ) { |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
131 |
y = 0; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
132 |
} else |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
133 |
if ( y > (SCREEN_HEIGHT-16) ) { |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
134 |
y = SCREEN_HEIGHT-16; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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} |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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axis_area[draw].x = (Sint16)x; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
137 |
axis_area[draw].y = (Sint16)y; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
138 |
axis_area[draw].w = 16; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
139 |
axis_area[draw].h = 16; |
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
140 |
SDL_FillRect(screen, &axis_area[draw], 0xFFFF); |
1854 | 141 |
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1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
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SDL_UpdateRects(screen, 2, axis_area); |
0 | 143 |
} |
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} |
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int main(int argc, char *argv[]) |
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{ |
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const char *name; |
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int i; |
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SDL_Joystick *joystick; |
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/* Initialize SDL (Note: video is required to start event loop) */ |
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if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { |
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fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); |
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exit(1); |
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} |
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/* Print information about the joysticks */ |
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printf("There are %d joysticks attached\n", SDL_NumJoysticks()); |
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for ( i=0; i<SDL_NumJoysticks(); ++i ) { |
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name = SDL_JoystickName(i); |
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printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick"); |
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} |
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if ( argv[1] ) { |
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joystick = SDL_JoystickOpen(atoi(argv[1])); |
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if ( joystick == NULL ) { |
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printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), |
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SDL_GetError()); |
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} else { |
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WatchJoystick(joystick); |
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SDL_JoystickClose(joystick); |
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} |
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} |
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SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK); |
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return(0); |
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} |