Mercurial > sdl-ios-xcode
view test/testjoystick.c @ 779:68c8da837fc0
Date: Tue, 6 Jan 2004 21:54:02 +0100
From: Max Horn
Subject: Auto hide mouse & other changes
the attached bug adds the auto-hide-mouse feature I talked about
earlier. Turned out it was a lot simpler than I thought, simply by
using our existing code :-). I actually spent much more time on fixing
various bugs in the code and correcting (IMO) some behavior (although,
due to the lack of real specs for SDL, it's probably arguable what
'correct' means...).
* adds auto (un)hiding of mouse depending on whether it is in- or
outside the game window
* computation of course coordinates is correct now (it often and
reproducible got out of sync with the old code, since the NSEvent
window was in some cases *not* our window anymore, so locationInWindow
returned wrong results)
* added a method which at any time returns the mouse coords, relative
to our window
* fixed handling of lost/gain input/mouse/app focus "events"
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 07 Jan 2004 15:01:51 +0000 |
parents | 74212992fb08 |
children | 281d3f4870e5 |
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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[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); } /* Erase previous axes */ SDL_FillRect(screen, &axis_area[draw], 0x0000); /* Draw the X/Y axis */ draw = !draw; x = (((int)SDL_JoystickGetAxis(joystick, 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, 1))+32768); y *= SCREEN_HEIGHT; y /= 65535; if ( y < 0 ) { y = 0; } else if ( y > (SCREEN_HEIGHT-16) ) { y = SCREEN_HEIGHT-16; } axis_area[draw].x = (Sint16)x; axis_area[draw].y = (Sint16)y; axis_area[draw].w = 16; axis_area[draw].h = 16; SDL_FillRect(screen, &axis_area[draw], 0xFFFF); SDL_UpdateRects(screen, 2, axis_area); } } 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"); } 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); }