Mercurial > sdl-ios-xcode
view test/testjoystick.c @ 2429:2c55b72ba46e gsoc2008_iphone
testdyngles is exactly what it sounds like -- a version of testdyngl that uses OpenGL ES calls instead of OpenGL. Was necessary to create because glOrtho is called glOrthof in OpenGL ES, and OpenGL ES doesn't have glBegin() type semantics for specifying geometry.
author | Holmes Futrell <hfutrell@umail.ucsb.edu> |
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date | Fri, 15 Aug 2008 00:52:52 +0000 |
parents | 6280c111ee80 |
children | 450a9bf50c37 f55c87ae336b |
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/* Simple program to test the SDL joystick routines */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "SDL.h" #define SCREEN_WIDTH 640 #define SCREEN_HEIGHT 480 void WatchJoystick(SDL_Joystick * joystick) { SDL_Surface *screen; const char *name; int i, done; SDL_Event event; int x, y, draw; SDL_Rect axis_area[6][2]; /* Set a video mode to display joystick axis position */ screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); if (screen == NULL) { fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError()); return; } /* Print info about the joystick we are watching */ name = SDL_JoystickName(SDL_JoystickIndex(joystick)); printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), name ? name : "Unknown Joystick"); printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), SDL_JoystickNumBalls(joystick), SDL_JoystickNumButtons(joystick)); /* Initialize drawing rectangles */ memset(axis_area, 0, (sizeof axis_area)); draw = 0; /* Loop, getting joystick events! */ done = 0; while (!done) { while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_JOYAXISMOTION: printf("Joystick %d axis %d value: %d\n", event.jaxis.which, event.jaxis.axis, event.jaxis.value); break; case SDL_JOYHATMOTION: printf("Joystick %d hat %d value:", event.jhat.which, event.jhat.hat); if (event.jhat.value == SDL_HAT_CENTERED) printf(" centered"); if (event.jhat.value & SDL_HAT_UP) printf(" up"); if (event.jhat.value & SDL_HAT_RIGHT) printf(" right"); if (event.jhat.value & SDL_HAT_DOWN) printf(" down"); if (event.jhat.value & SDL_HAT_LEFT) printf(" left"); printf("\n"); break; case SDL_JOYBALLMOTION: printf("Joystick %d ball %d delta: (%d,%d)\n", event.jball.which, event.jball.ball, event.jball.xrel, event.jball.yrel); break; case SDL_JOYBUTTONDOWN: printf("Joystick %d button %d down\n", event.jbutton.which, event.jbutton.button); break; case SDL_JOYBUTTONUP: printf("Joystick %d button %d up\n", event.jbutton.which, event.jbutton.button); break; case SDL_KEYDOWN: if (event.key.keysym.sym != SDLK_ESCAPE) { break; } /* Fall through to signal quit */ case SDL_QUIT: done = 1; break; default: break; } } /* Update visual joystick state */ for (i = 0; i < SDL_JoystickNumButtons(joystick); ++i) { SDL_Rect area; area.x = i * 34; area.y = SCREEN_HEIGHT - 34; area.w = 32; area.h = 32; if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { SDL_FillRect(screen, &area, 0xFFFF); } else { SDL_FillRect(screen, &area, 0x0000); } SDL_UpdateRects(screen, 1, &area); } for (i = 0; i < SDL_JoystickNumAxes(joystick) / 2 && i < SDL_arraysize(axis_area); ++i) { /* Erase previous axes */ SDL_FillRect(screen, &axis_area[i][draw], 0x0000); /* Draw the X/Y axis */ draw = !draw; x = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 0)) + 32768); x *= SCREEN_WIDTH; x /= 65535; if (x < 0) { x = 0; } else if (x > (SCREEN_WIDTH - 16)) { x = SCREEN_WIDTH - 16; } y = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 1)) + 32768); y *= SCREEN_HEIGHT; y /= 65535; if (y < 0) { y = 0; } else if (y > (SCREEN_HEIGHT - 16)) { y = SCREEN_HEIGHT - 16; } axis_area[i][draw].x = (Sint16) x; axis_area[i][draw].y = (Sint16) y; axis_area[i][draw].w = 16; axis_area[i][draw].h = 16; SDL_FillRect(screen, &axis_area[i][draw], 0xFFFF); SDL_UpdateRects(screen, 2, axis_area[i]); } } } int main(int argc, char *argv[]) { const char *name; int i; SDL_Joystick *joystick; /* Initialize SDL (Note: video is required to start event loop) */ if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); exit(1); } /* Print information about the joysticks */ printf("There are %d joysticks attached\n", SDL_NumJoysticks()); for (i = 0; i < SDL_NumJoysticks(); ++i) { name = SDL_JoystickName(i); printf("Joystick %d: %s\n", i, name ? name : "Unknown Joystick"); joystick = SDL_JoystickOpen(i); if (joystick == NULL) { fprintf(stderr, "SDL_JoystickOpen(%d) failed: %s\n", i, SDL_GetError()); } else { printf(" axes: %d\n", SDL_JoystickNumAxes(joystick)); printf(" balls: %d\n", SDL_JoystickNumBalls(joystick)); printf(" hats: %d\n", SDL_JoystickNumHats(joystick)); printf(" buttons: %d\n", SDL_JoystickNumButtons(joystick)); SDL_JoystickClose(joystick); } } if (argv[1]) { joystick = SDL_JoystickOpen(atoi(argv[1])); if (joystick == NULL) { printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), SDL_GetError()); } else { WatchJoystick(joystick); SDL_JoystickClose(joystick); } } SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK); return (0); }