Mercurial > sdl-ios-xcode
view test/testjoystick.c @ 4495:dbbfdb9ea716
Simplified clipboard API for sanity's sake.
A complete clipboard implementation would support multiple formats that could be queried at runtime, events for when the clipboard contents changed, support for HTML, images, etc. We're not going that crazy, at least for now. :)
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 07 Jul 2010 23:54:03 -0700 |
parents | f55c87ae336b |
children |
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/* Simple program to test the SDL joystick routines */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "SDL.h" #ifdef __IPHONEOS__ #define SCREEN_WIDTH 320 #define SCREEN_HEIGHT 480 #else #define SCREEN_WIDTH 640 #define SCREEN_HEIGHT 480 #endif 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); }